CN117838135A

CN117838135A - Alarm method, medical equipment, medical system and readable storage medium

Info

Publication number: CN117838135A
Application number: CN202211231198.5A
Authority: CN
Inventors: 何先梁; 苏健伟; 孙泽辉; 叶文宇
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2024-04-09

Abstract

The embodiment of the invention provides an alarm method, medical equipment, a medical system and a readable storage medium. The alarm method is applied to medical equipment for monitoring vital sign parameters of patients. The alarm method comprises the following steps: acquiring a first physiological signal; judging whether the first physiological signal meets a first preset condition corresponding to a first alarm or not; when the first physiological signal is judged to meet a first preset condition corresponding to the first alarm, acquiring a second physiological signal associated with the first physiological signal; judging whether the second physiological signal meets a second preset condition or not; when the second physiological signal is judged to meet the second preset condition, the first alarm is output, the second physiological signal related to the first physiological signal is analyzed, and the first alarm is confirmed according to the analysis result, so that the alarm accuracy is improved, delay of treatment due to alarm fatigue of medical staff is avoided, and improvement of medical quality is facilitated.

Description

Alarm method, medical device, medical system, and readable storage medium

Technical Field

The present invention relates to the field of medical technology, and in particular, to an alarm method, a medical device, a medical system, and a readable storage medium.

Background

Medical devices generally refer to medical devices that are wearable on a patient and that enable uninterrupted real-time monitoring of patient monitoring parameter data. When the monitored parameter data of the monitored patient reaches a preset alarm condition, the existing medical equipment can generate an alarm, including an audible alarm or a light alarm, so as to prompt medical staff to pay attention to the patient and intervene according to alarm information.

The alarm mechanism of conventional medical devices is based on controlling the medical device to generate an alarm when the value of a single physiological parameter signal of a patient is detected to exceed a normal range. However, the single physiological parameter signal is easy to generate false alarm under the influence of interference factors such as noise and the like, so that the problem of alarm fatigue is brought to medical staff.

Aiming at the problems, the existing medical equipment adopts processing strategies such as filtering, machine learning, kalman filtering, transform domain analysis and the like to solve the influence of interference factors such as noise and the like on the monitored physiological parameter signals, however, the algorithm of the processing strategies is complex in calculation, and a large amount of resources are required to be occupied, so that the real-time calculation and engineering realization are difficult.

Disclosure of Invention

In view of the foregoing, it is desirable to provide an alarm method, a medical device, a medical system, and a readable storage medium to solve the above-mentioned problems.

In a first aspect, an embodiment of the present invention provides an alarm method applied to a medical device for monitoring vital sign parameters of a patient, the alarm method including the steps of:

acquiring a first physiological signal;

judging whether the first physiological signal meets a first preset condition corresponding to a first alarm or not;

when the first physiological signal is judged to meet a first preset condition corresponding to the first alarm, acquiring a second physiological signal associated with the first physiological signal;

judging whether the second physiological signal meets a second preset condition or not;

and outputting the first alarm when the second physiological signal is judged to meet the second preset condition.

In a second aspect, an embodiment of the present invention further provides an alarm method applied to a medical device for monitoring vital sign parameters of a patient, the alarm method including the steps of:

acquiring electrocardiosignals;

judging whether the electrocardiosignal meets a first preset condition corresponding to cardiac arrest alarm;

when judging that the electrocardiosignal meets a first preset condition corresponding to the cardiac arrest alarm, acquiring an invasive blood pressure signal and/or an blood oxygen signal associated with the electrocardiosignal;

Judging whether the invasive blood pressure signal and/or the blood oxygen signal meet a second preset condition or not;

outputting the cardiac arrest alarm when the invasive blood pressure signal and/or the blood oxygen signal are judged to meet the second preset condition.

In a third aspect, an embodiment of the present invention further provides an alarm method applied to a medical device for monitoring vital sign parameters of a patient, the alarm method including the steps of:

acquiring a respiratory signal;

judging whether the respiratory signal meets a first preset condition corresponding to respiratory asphyxia alarm;

when the respiratory signal is judged to meet a first preset condition corresponding to the respiratory asphyxia alarm, acquiring an electrocardiosignal, a blood oxygen signal and/or a blood oxygen signal associated with the respiratory signal;

judging whether the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet a second preset condition or not;

outputting the respiratory asphyxia alarm when judging that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition.

In a fourth aspect, an embodiment of the present invention further provides an alarm method applied to a medical device for monitoring vital sign parameters of a patient, the alarm method including the steps of:

Acquiring electrocardiosignals;

judging whether the electrocardiosignal meets a first preset condition corresponding to heart rate alarm;

when the electrocardiosignal meets a first preset condition corresponding to the heart rate alarm, acquiring an invasive blood pressure signal and/or an blood oxygen signal associated with the electrocardiosignal;

and outputting the heart rate alarm when judging that the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition.

In a fifth aspect, embodiments of the present invention provide a medical device comprising a processor configured to:

acquiring a first physiological signal;

In a sixth aspect, an embodiment of the present invention provides a medical system including the medical device described above.

In a seventh aspect, an embodiment of the present invention provides a readable storage medium having stored thereon an interactive program that when executed by a processor performs the alarm management method described above.

The embodiment of the invention provides an alarm method, medical equipment, a medical system and a readable storage medium. The alarm method is applied to medical equipment for monitoring vital sign parameters of a patient, and comprises the following steps: when the first physiological signal is judged to meet a first preset condition corresponding to the first alarm, acquiring a second physiological signal associated with the first physiological signal; judging whether the second physiological signal meets a second preset condition or not; when the second physiological signal is judged to meet the second preset condition, the first alarm is output, so that the second physiological signal related to the first physiological signal can be analyzed, and the first alarm is confirmed according to the analysis result, thereby improving the alarm accuracy, avoiding delay of treatment of medical staff due to 'alarm fatigue', and being beneficial to improvement of medical quality. In addition, the invention adopts the alarm method of various physiological parameter signals, simplifies the complexity of the algorithm, shortens the analysis time of alarm information, thereby improving the processing efficiency of the alarm information and the alarm management efficiency.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of program modules of a medical device according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a medical system provided by an embodiment of the present invention.

Fig. 3 is a flowchart showing the steps of an alarm method according to a first embodiment of the present invention.

Fig. 4 is a flowchart showing the steps of an alarm method according to a second embodiment of the present invention.

Fig. 5 is a flowchart illustrating steps of an alarm method according to a third embodiment of the present invention.

Fig. 6 is a flowchart showing the steps of an alarm method according to a fourth embodiment of the present invention.

Detailed Description

Reference is made to various exemplary embodiments herein. However, those skilled in the art will recognize that changes and modifications may be made to the exemplary embodiments without departing from the scope herein. For example, the various operational steps and components used to perform the operational steps may be implemented in different ways (e.g., one or more steps may be deleted, modified, or combined into other steps) depending on the particular application or taking into account any number of cost functions associated with the operation of the system.

The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, or apparatus.

Referring to fig. 1, fig. 1 is a schematic diagram illustrating a program module of a medical device 100 according to an embodiment of the invention. The medical device 100 is used for monitoring vital sign parameters of a patient to obtain corresponding monitored data. The medical device 100 may be any one of a monitor, a local central station, a remote central station, a cloud service system, and a mobile terminal applied in a hospital, and the medical device 100 may also be a monitoring device used in an off-hospital scene, for example, a home consumer electronic device having vital sign parameters for monitoring a user. The monitor may be a bedside monitor, a portable medical device, or a combination thereof.

The medical device 100 includes at least a parameter measurement circuit 112 and a master circuit 113. The parameter measurement circuit 112 includes a parameter measurement circuit corresponding to at least one vital sign parameter. In this embodiment, the medical device 100 is a multi-parameter monitor that can be used to monitor a plurality of vital sign parameters. Specifically, the parameter measurement circuit 112 includes parameter measurement circuits corresponding to a plurality of vital sign parameters. The parameter measurement circuit 112 may include at least one of an electrocardiograph signal parameter measurement circuit, a blood oxygen parameter measurement circuit, a non-invasive blood pressure parameter measurement circuit, an invasive blood pressure parameter measurement circuit, a respiratory parameter measurement circuit, a body temperature parameter measurement circuit, and the like. Each parameter measurement circuit is connected to an externally inserted sensor attachment 111 via a respective sensor interface.

In this embodiment, the sensor accessory 111 may be independently disposed outside the medical device 100 and detachably connected to the medical device 100. In other embodiments, the sensor accessory 111 may also be integrated on the medical device 100. Specifically, the sensor accessory 111 may be disposed outside of the housing of the medical device 100, as a stand-alone external parameter module, may form a plug-in monitor by being plugged into a host (including a main control board) of the medical device 100, and be part of the medical device 100; or may be connected to the host (including the main control board) of the medical device 100 by a cable, i.e., the sensor accessory 111 serves as an accessory external to the medical device 100. Of course, the sensor accessory 111 may also be built into the housing, integrated with the main control module, or physically separate from the housing, forming an integrated monitor.

The sensor accessory 111 includes a detection accessory for detecting physiological parameters such as electrocardiograph, blood oxygen, blood pressure, respiration, body temperature, and the like. The parameter measurement circuit is mainly used for connecting the sensor accessory 111 to obtain the collected physiological parameter signal, and may include at least two or more physiological parameter measurement circuits, where the parameter measurement circuit may be, but is not limited to, a physiological parameter measurement circuit, a human physiological parameter measurement circuit or a sensor to collect a physiological parameter of a human body, etc. Specifically, the parameter measurement circuit obtains an external physiological parameter sensor accessory through the expansion interface to obtain a physiological sampling signal of a relevant patient, and obtains physiological data after processing for alarming and displaying. The expansion interface can also be used for outputting the control signal which is output by the main control circuit 113 and is related to how to collect the physiological parameters to an external physiological parameter monitoring accessory through a corresponding interface, so as to realize the monitoring control of the physiological parameters of the patient.

The main control circuit 113 needs to include at least one processor 1131 and at least one memory 1132, and of course, the main control circuit 113 may further include at least one of a power management module 1133, a power module, an interface conversion circuit, and the like.

The processor 1131 may be a central processing unit (Centra lProcessing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digita lSigna lProcessor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, and the processor 1131 is a control center of the medical device 100, connecting various parts of the entire medical device 100 using various interfaces and lines.

The memory 1132 may be used to store computer programs and/or modules, and the processor 1131 implements the various functions of the medical device 100 by running or executing the computer programs and/or modules stored in the memory 1132 and invoking data stored in the memory. The memory 1132 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, application programs required for a plurality of functions (such as a sound playing function, an image playing function, etc.), and the like; the data storage area may store data (such as audio data, phonebooks, etc.) created according to the use of the handset, etc. In addition, memory 1132 may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), multiple disk storage devices, flash memory devices, or other volatile solid-state storage devices.

Processor 1131 is also configured to perform all of the steps in the alarm method described below. For example, step S301 to step S310 in fig. 3, step S401 to step S410 in fig. 4, step S501 to step S510 in fig. 5, step S601 to step S610 in fig. 6, and the like. Specifically, the memory 1132 stores program codes, and the processor 1131 is configured to call the program codes of the memory 1132 to execute all the steps in the alarm method.

The power management module 1133 is used for controlling the power on and off of the whole machine, the power on time sequence of each power domain in the board card, the charge and discharge of the battery and the like. The power module refers to a power module which is formed by associating a schematic diagram of a power circuit unit which is frequently repeatedly called with a PCB layout and solidifying the schematic diagram into a single power module, that is, an input voltage is converted into an output voltage through a predetermined circuit, wherein the input voltage and the output voltage are different. For example, a voltage of 15V is converted to 1.8V, 3.3V, 3.8V, or the like. It will be appreciated that the power module may be single-pass or multi-pass. When the power module is in a single path, the power module can convert an input voltage into an output voltage. When the power supply module is multipath, the power supply module can convert one input voltage into a plurality of output voltages, and the voltage values of the plurality of output voltages can be the same or different, so that different voltage requirements of a plurality of electronic elements can be met simultaneously, the number of external interfaces of the module is small, the power supply module works in a system to be decoupled with an external hardware system in a black box, and the reliability of the whole power supply system is improved. The interface conversion circuit is used for converting signals output by the master minimum system module (i.e. at least one processor 1131 and at least one memory 1132 in the master circuit 113) into input standard signals required to be received by actual external devices, for example, supporting an external VGA display function, converting RGB digital signals output by the master CPU into VGA analog signals, supporting an external network function, and converting RMII signals into standard network differential signals.

In addition, the medical device 100 may further include one or more of an output component 114, a communication interface 115, and an input interface circuit 116. The output unit 114 may be a display for outputting an image, a player for outputting a sound, a light emitting unit for outputting light information, or an audible and visual alarm circuit for simultaneously outputting sound and light information. The medical device 100 may establish data communication with external devices through the communication interface 115. The input interface circuit 116 is used for receiving operation instructions input by medical staff.

The master control circuit 113 is also used to coordinate and control various boards, circuits and components in the medical device 100. In this embodiment, the main control circuit 113 is used for controlling data interaction between the parameter measurement circuit 112 and the communication interface circuit, transmitting control signals, and transmitting physiological data to the display for display, or receiving control instructions of medical personnel input from physical input interface circuits such as a keyboard, a mouse, a touch screen, a remote controller, and the like, and outputting control signals related to how to collect physiological parameters. The master control circuit 113 performs calculation of physiological parameters, and sends calculation results and waveforms of the parameters to a host (such as a host with a display, a PC, a central station, etc.) through the communication interface 115, where the communication interface 115 may be one or a combination of local area network interfaces formed by Ethernet (Token Ring), token Bus (Token Bus), and a backbone fiber optic distributed data interface (FDDI) serving as the three networks, or one or a combination of wireless interfaces such as infrared, bluetooth, wifi, WMTS communication, etc., or one or a combination of wired data connection interfaces such as RS232, USB, etc. The communication interface 115 may also be one or a combination of a wireless data transmission interface and a wired data transmission interface. The host computer can be any one of a monitor host computer, an electrocardiograph, an ultrasonic diagnostic apparatus, a computer and the like, and can be provided with matched software to form a medical device. The host may also be a communication device, such as a mobile phone, and the medical device 100 sends the data to the mobile phone supporting bluetooth communication through the bluetooth interface, so as to realize remote transmission of the data.

Referring to fig. 2, fig. 2 is a schematic diagram of a medical system 1000 according to an embodiment of the invention. In this embodiment, the medical system 1000 may be a networking system of monitors used in a hospital, and the system may be used to integrally store data of the monitors, centrally manage patient information and care information, and store both in association, so as to facilitate historical data storage and associated alarm.

As shown in fig. 2, in the medical system 1000, a bedside monitor 212 may be provided for each patient bed, and the bedside monitor 212 may be the multi-parameter monitor or the plug-in monitor. In addition, each bedside monitor 212 can be paired with a portable medical device 213, the portable medical device 213 provides a simple and portable multi-parameter monitor, but the portable medical device 213 is worn on the body of a patient to carry out mobile monitoring on the corresponding patient, and physiological data generated by the mobile monitoring can be transmitted to the bedside monitor 212 for display after wired or wireless communication with the bedside monitor 212 through the portable medical device 213, or transmitted to the central station 211 for a doctor or nurse to view through the bedside monitor 212, or transmitted to the data server 215 for storage through the bedside monitor 212. In addition, the portable medical device 213 may also transmit the physiological data generated by the portable monitoring to the central station 211 for storage and display directly through the wireless network node 214 disposed in the hospital, or transmit the physiological data generated by the portable monitoring to the data server 215 for storage through the wireless network node 214 disposed in the hospital. It can be seen that the data corresponding to the physiological parameters displayed on the bedside monitor 212 can originate from a sensor accessory directly connected to the patient above the monitor, or from the portable medical device 213, or from a data server.

Physiological signals that characterize the vital signs of a living organism are mainly derived from physiological activities (e.g., mechanical or bioelectric activities) of the organism's organs, which are essential features of the organism's organs. The physiological activities of the organism organs can be acquired through various sensors to form various physiological parameters corresponding to the sensors, and the physiological parameters can be electrocardio parameters, blood oxygen parameters, blood pressure parameters, respiratory parameters, muscle relaxation parameters, brain electrical parameters and the like. Typically, a sensor of one type corresponds to a physiological parameter of one type, and the physiological parameter includes a physiological signal collected by the sensor and an analysis result obtained by processing, analyzing and calculating the physiological signal. That is, a type of sensor outputs a physiological signal, and the monitoring device analyzes the physiological signal through an algorithm corresponding to the physiological parameter to form various analysis results of the physiological parameter, wherein the analysis results can be specific physiological index values, or waveform diagrams or bar charts.

For example, the electrocardiograph signal is used to collect electrocardiograph parameters, the blood oxygen sensor signal is used to collect blood oxygen parameters, the sphygmomanometer signal is used to collect blood pressure parameters, the blood pressure parameters can also be obtained through the invasive way of inserting the probe into the blood vessel, the respirator detector signal is used to collect breathing parameters, and the electroencephalogram sensor signal is used to collect electroencephalogram parameters.

The physiological parameters obtained by the different sensors, although different, may be the same in nature, i.e. derived from the same organ physiological activity, as the signals acquired by the different sensors, and these signals comprise signals having the same rhythmic variation, which signals are referred to herein as homology signals. For example, the electrocardiosignal collected by the electrocardio lead reflects the change of bioelectric signals of the heart, the blood oxygen signal collected by the blood oxygen sensor reflects the cardiac output of the heart, the blood pressure signal of the invasive blood pressure detection in the blood pressure detection reflects the pumping function of the heart, and the essential sources of the Electrocardiosignal (ECG), the blood oxygen signal (SPO 2) and the invasive blood pressure signal (IBP) are all obtained by different types of sensors and are related to the mechanical movement of the heart, so the electrocardiosignal, the blood oxygen signal and the invasive blood pressure signal are considered to be mutually homologous signals.

Although different physiological parameters obtained by different sensors may differ, there may be signals acquired by different sensors that are associated with a certain physiological property (i.e. physiological activity), i.e. physiological activity originating from different organs and that contain the same rhythmic variation, such signals being referred to herein as pseudo-homologous signals. For example, the respiratory signal (RESP) acquired by the ventilator detector reflects changes in the bioelectric signal of the respiratory muscle. Wherein the respiratory muscle refers to muscles related to respiratory exercise, including intercostal muscles, diaphragm muscles, abdominal wall muscles, sternocleidomastoid muscles, dorsal muscle groups, thoracic muscle groups, etc. Because the electrocardiosignal, the blood oxygen signal and the invasive blood pressure signal can be used for extracting a respiratory baseline for reflecting respiratory movement, the electrocardiosignal, the blood oxygen signal and the invasive blood pressure signal can be used as indirect respiratory signals. I.e. respiratory signal, electrocardiographic signal, blood oxygen signal and invasive blood pressure signal, are all associated with the mechanical movement of the respiratory muscle, although obtained by different types of sensors, and therefore are considered pseudo-homologous signals.

It should be noted that, the associated signals described herein refer to physiological signals (referred to herein simply as rhythmic physiological signals) that contain the same rhythmic variation. The rhythmic physiological signal may be the homologous signal or the pseudo-homologous signal. Specifically, by analyzing the electrocardiosignal, the blood oxygen signal and the invasive blood pressure signal, the beating rhythm of the heart can be obtained. The respiratory rhythm of the respiratory muscle can be obtained through analysis of the respiratory signal, the electrocardiosignal, the blood oxygen signal and the invasive blood pressure signal. The associated signals reflect the physiological activities of the same or different organism organs, and there should be a certain correlation between them. The correlation between different physiological signals will be described below taking an electrocardiographic signal (ECG), blood oxygen signal (SPO 2), invasive blood pressure signal (IBP) and respiratory signal (RESP) as examples.

When each parameter is monitored normally, as part of the parameters are the same, such as three parameters of an electrocardiosignal, an oximetry signal and an invasive blood pressure signal, all originate from heart beating, in theory, the waveform changes of the three parameters are synchronous, for example, when a QRS complex appears in an electrocardiogram corresponding to the electrocardiosignal, the invasive blood pressure signal and the oximetry signal also have pulse wave peaks in similar time, i.e. the three parameters are synchronous. Meanwhile, since the three parameters are commonly derived from the heart, when the heart mechanism function is damaged, the three parameters are reflected. By analyzing the three parameters, whether the heart activity is abnormal or not is determined according to the waveform of the parameters and the analysis result. The electrocardiosignal, the invasive blood pressure signal and the blood oxygen signal have relevance in reflecting the rhythm information of the heart, and the waveforms of the electrocardiosignal, the invasive blood pressure signal and the blood oxygen signal have the same frequency but have a certain phase difference.

When each parameter is monitored normally, because partial parameter sources are at least partially different, for example, four parameters of a respiratory signal, an electrocardiosignal, an invasive blood pressure signal and a blood oxygen signal can reflect respiratory motion, respiratory parameter changes corresponding to the four parameters are synchronous in theory, namely, respiratory parameter waveforms corresponding to each parameter are consistent with rhythmic changes of respiratory parameter values. In the case of respiratory abnormalities, this is reflected in all four parameters. By analyzing the four parameters, whether the respiratory activity is abnormal or not is determined according to the waveform of the parameters and the analysis result. The respiratory signal, the electrocardiosignal, the invasive blood pressure signal and the blood oxygen signal have relevance in reflecting the rhythm information of respiratory muscles, and the waveforms of the respiratory signal, the electrocardiosignal, the invasive blood pressure signal and the blood oxygen signal have the same frequency but have a certain phase difference.

Based on the knowledge, the embodiment of the invention discloses an alarm method, which is characterized in that when a first physiological signal is judged to meet a first preset condition corresponding to a first alarm, a second physiological signal related to the first physiological signal is acquired, whether the second physiological signal meets a second preset condition is judged, and when the second physiological signal is judged to meet the second preset condition, the first alarm is output, so that the alarm accuracy can be improved, delay of treatment due to alarm fatigue of medical staff is avoided, and improvement of medical quality is facilitated. In addition, the invention adopts the alarm method of various physiological parameter signals, simplifies the complexity of the algorithm, shortens the analysis time of alarm information, thereby improving the processing efficiency of the alarm information and the alarm management efficiency. Each of which is described in detail below.

Referring to fig. 1 to 3, fig. 3 is a flowchart illustrating an alarm method according to a first embodiment of the present application. As shown in fig. 3, the alarm method is applied to a medical device 100 for monitoring vital sign parameters of a patient. It will be appreciated that the alarm method may also be applied to the medical system 1000 described above, i.e. the alarm method may be applied to the central station 211 as well as to the bedside monitor 212. The alarm method comprises the following steps.

In step S301, a first physiological signal is acquired.

The first physiological signal may be a physiological signal directly acquired by a sensor accessory of the medical device, or a physiological signal indirectly acquired by an external device acquiring and then transmitting the physiological signal to the medical device. The first physiological signal includes, but is not limited to, one or any combination of an electrocardiographic signal, an oximetry signal, an invasive blood pressure signal, and a respiration signal.

Step S303, determining whether the first physiological signal meets a first preset condition corresponding to a first alarm. When the first physiological signal does not meet the first preset condition corresponding to the first alarm, the processor will control to return to execute step S301, i.e. acquire the first physiological signal. When the first physiological signal meets the first preset condition corresponding to the first alarm, the processor controls to execute step S305.

In the monitoring process, the processor analyzes the received first physiological signal in real time, and judges whether the first physiological signal meets a first preset condition corresponding to a first alarm according to an analysis result. The determining whether the first physiological signal meets the first preset condition corresponding to the first alarm may be implemented by using an existing scheme, which is not described herein. In general, the processor compares the parameter value corresponding to the first physiological signal in a certain period of time with a preset parameter range, and when the parameter value exceeds the preset parameter range (for example, is greater than an upper limit or is less than a lower limit), the first physiological signal is considered to meet a first preset condition corresponding to the first alarm; or the processor compares the parameter waveform corresponding to the first physiological signal in a certain time period with a preset reference waveform, and when the parameter waveform is not matched with the preset reference waveform, the first physiological signal is considered to meet a first preset condition corresponding to the first alarm. The processor may analyze the first physiological signal by selecting a parameter value and a parameter waveform corresponding to a certain time period, so as to determine whether the first physiological signal meets a first preset condition corresponding to the first alarm. The first preset condition is an alarm condition of the first alarm.

Specifically, in some embodiments, the determining whether the first physiological signal meets a first preset condition corresponding to a first alarm specifically includes:

judging whether the first physiological signal contains first characteristic information corresponding to the first alarm. Judging that the first physiological signal meets a first preset condition corresponding to the first alarm if the first physiological signal does not contain first characteristic information corresponding to the first alarm;

and judging whether the first physiological signal contains first characteristic information corresponding to the first alarm or not, and judging whether the first characteristic information is matched with preset characteristic information or not. If yes, judging that the first physiological signal meets a first preset condition corresponding to the first alarm. If not, judging that the first physiological signal does not meet a first preset condition corresponding to the first alarm.

Clinically, there are two reasons for the abnormality of the physiological signal, one is that the physical condition of the patient is changed, for example, the patient is worsened, or is disturbed (for example, cough or limb is pressed), so that some physiological signals of the body are also changed correspondingly, the physiological signals detected by the sensor may be out of the normal range, the abnormality of the physiological signal is referred to as physiological abnormality, and the processor generates a prompt signal or an alarm signal after judging the physiological abnormality, so as to prompt the patient that the condition needing attention is present. Another situation is that the patient's physical condition is not changed, but an abnormality is detected, such as a sensor accessory falling off or making poor contact, or a sensor accessory failing, resulting in a signal interruption or an excessively large and small condition, such that the processor derives the result of a physiological signal abnormality, referred to herein as a detected abnormality. Therefore, if the abnormality of the first physiological signal is a detectable abnormality, the alarm event output by the medical equipment causes the medical staff to have the false impression that the physical condition of the patient is abnormal, thereby reducing the accuracy of the alarm event output by the medical equipment and bringing the alarm fatigue problem to the medical staff. According to the method, the alarm event and the associated signals such as the respiratory signal, the electrocardiosignal, the invasive blood pressure signal and the blood oxygen signal are subjected to fusion analysis, so that the alarm accuracy is improved, the medical staff is prevented from delaying treatment due to alarm fatigue, and the improvement of medical quality is facilitated.

It will be appreciated that in other embodiments, when the medical device is used to monitor only one vital sign parameter of the patient; or if the vital sign parameters used for monitoring the patient do not have correlation, the medical equipment immediately outputs the first alarm when detecting that the first physiological signal meets a first preset condition corresponding to the first alarm. Therefore, under the condition that no associated physiological signal exists, the medical equipment is ensured to generate and output the corresponding first alarm immediately when the first physiological signal is detected to meet the first preset condition corresponding to the first alarm, so that medical staff can intervene in alarm events in time, and the illness state delay is prevented.

Step S305, acquiring a second physiological signal associated with the first physiological signal.

Wherein the second physiological signal includes, but is not limited to, one of an electrocardiographic signal, an oximetry signal, an invasive blood pressure signal, and a respiratory signal, or any combination thereof. The first physiological signal is different from the second physiological signal. It should be noted that, the first physiological signal and the second physiological signal described herein refer to physiological signals monitored by the same patient in the same time period, that is, the time period corresponding to the first physiological signal is the same as the time period corresponding to the second physiological signal, which refer to the time period corresponding to the first preset condition for judging whether the first physiological signal meets the first alarm, that is, the time period corresponding to the first alarm, hereinafter referred to as the first time period.

The processor may determine a second physiological signal associated with the first physiological signal based on the first alarm. Wherein, the association relation between the first physiological signal and the second physiological signal can be preset and stored. For example, in response to a setting by a user such as a medical care person, the association between the first physiological signal and the second physiological signal may be preset and stored in the medical device 100, the medical system 1000, the central station 211, the bedside monitor 2, or other medical devices. For example, the association relationship of the electrocardiosignal, the blood oxygen signal and the invasive blood pressure signal is predefined and stored; or defining the association relation of the respiratory signal, the electrocardiosignal, the blood oxygen signal and the invasive blood pressure signal. For example, when the first alarm is a cardiac arrest alarm or a heart rate alarm event, the electrocardiographic signal, the blood oxygen signal, and the invasive blood pressure signal are considered to be associated signals, and an association of the electrocardiographic signal, the blood oxygen signal, and the invasive blood pressure signal is defined. When the first alarm is a respiratory asphyxia alarm, the respiratory signal, the electrocardiosignal, the blood oxygen signal and the invasive blood pressure signal are considered as related signals, and the related relation of the respiratory signal, the electrocardiosignal, the blood oxygen signal and the invasive blood pressure signal is defined. The processor can determine a second physiological signal associated with the first physiological signal according to the association between the first alarm and the physiological signal.

It will be appreciated that the alarm method further comprises: and when the second physiological signal associated with the first physiological signal is not acquired, controlling to output the first type of alarm.

Step S307, determining whether the second physiological signal meets a second preset condition. When the second physiological signal is determined to meet the second preset condition, step S309 is executed. When the second physiological signal is determined not to meet the second preset condition, step S310 is executed.

The judging whether the second physiological signal meets a second preset condition specifically includes:

judging whether the second physiological signal contains second characteristic information corresponding to the first alarm or not;

and when the second physiological signal does not contain the second characteristic information corresponding to the first alarm, determining that the second physiological signal meets the second preset condition.

Wherein the first characteristic information and the second characteristic information have the same rhythm variation, and the first characteristic information and the second characteristic information are used for reflecting the rhythm information of the heart or the rhythm information of the respiratory muscle. The first preset condition may be the same as or different from the first preset condition, that is, the first feature information may be the same as or different from the second feature information. Wherein the first characteristic information and the second characteristic information are both associated with the first alert. When the second physiological signal does not contain the second characteristic information corresponding to the first alarm, the abnormal condition of the first physiological signal is indicated to be physiological abnormal, namely, the physical condition of the patient changes, so that the first physiological signal meets a first preset condition corresponding to the first alarm.

Optionally, in some embodiments, the processor may pre-establish a correspondence between the first alarm and the second feature information, so that the second feature information may be quickly obtained by analyzing the second physiological signal based on the first alarm, thereby simplifying algorithm complexity and shortening analysis time of the second physiological signal, so as to improve processing efficiency of alarm information and improve alarm management efficiency. For example, when the first alarm is a cardiac arrest alarm or a heart rate first alarm, the second characteristic information in the second physiological signal may be pulse characteristic information; when the first alarm is a respiratory distress alarm, the second characteristic information of the second physiological signal may be a respiratory wave signal. The pulse characteristic information at least comprises a pulse wave waveform and a pulse rate, and the respiration characteristic information at least comprises a respiration wave waveform and a respiration frequency.

In other embodiments, the correspondence between the first feature information and the second feature information may be pre-established; the corresponding relation between the first alarm and the first and second characteristic information can be directly established, so that the first and second characteristic information can be more accurately determined, the second characteristic information can be rapidly determined from the second physiological signal, the algorithm complexity is further simplified, the analysis time of the second physiological signal is shortened, the processing efficiency of the alarm information is improved, and the alarm management efficiency is improved.

In some embodiments, the alert method further comprises: and judging whether the second characteristic information is matched with preset characteristic information or not when judging that the second physiological signal contains the second characteristic information corresponding to the first alarm. If yes, determining that the second physiological signal meets the second preset condition, and indicating that the abnormality of the first physiological signal belongs to physiological abnormality. If not, determining that the second physiological signal does not meet the second preset condition, and indicating that the abnormality of the first physiological signal belongs to the detectable abnormality.

The preset feature information may include, but is not limited to, at least one of first feature information, template feature information and historical feature information in the second physiological signal.

In some embodiments, the alert method further comprises: when the second physiological signal contains second characteristic information corresponding to the first alarm, judging whether the change trend of the first characteristic information corresponding to the first alarm in the first physiological signal is consistent with the change trend of the second characteristic information corresponding to the first alarm in the second physiological signal. If yes, determining that the second physiological signal meets the second preset condition. If not, determining that the second physiological signal does not meet the second preset condition.

In some embodiments, the alert method further comprises: and judging whether the second characteristic information is matched with the template characteristic information or not when judging that the second physiological signal contains the second characteristic information corresponding to the first alarm. If yes, determining that the second physiological signal meets the second preset condition. If not, determining that the second physiological signal does not meet the second preset condition.

In some embodiments, the alert method further comprises: and when judging that the second physiological signal contains second characteristic information corresponding to the first alarm, judging whether the similarity of the second characteristic information in a first time period and a second time period meets the preset similarity. The first time period is a time period corresponding to a first preset condition of judging whether the first physiological signal meets the first alarm, namely the first alarm, and the second time period is earlier than the first time period. If yes, determining that the second physiological signal meets the second preset condition. In this embodiment, the first time period is a current time period, and the second time period is a historical time period, and is adjacent to or spaced from the first time period by a preset time. The preset time is as short as possible so as to improve the accuracy of the first alarm. The time length of the first time period is equal to the time length of the second time period. In some embodiments, the time length of the first time period may also be greater than or less than the time length of the second time period. The second characteristic information includes, but is not limited to, at least one of a waveform characteristic and a numerical characteristic.

In some embodiments, the determining whether the similarity of the second feature information corresponding to the first alarm in the second physiological signal in the first period and the second period meets a preset similarity specifically includes: judging whether the waveform characteristics of the second characteristic information in the first time period are matched with the waveform characteristics of the second characteristic information in the second time period or not. If yes, judging that the similarity of second characteristic information corresponding to the first alarm in the second physiological signal in the first time period and the second time period meets the preset similarity. If not, judging that the similarity of the second characteristic information corresponding to the first alarm in the second physiological signal in the first time period and the second time period does not meet the preset similarity.

In other embodiments, the determining whether the similarity of the second feature information corresponding to the first alarm in the second physiological signal in the first period and the second period meets a preset similarity specifically includes: and judging whether the change trend of the numerical value characteristic of the second characteristic information in the first time period is matched with the change trend of the numerical value characteristic of the second characteristic information in the second time period. If yes, judging that the similarity of second characteristic information corresponding to the first alarm in the second physiological signal in the first time period and the second time period meets the preset similarity. If not, judging that the similarity of the second characteristic information corresponding to the first alarm in the second physiological signal in the first time period and the second time period does not meet the preset similarity.

In some embodiments, after determining that the second physiological signal does not include second characteristic information corresponding to the first alarm, the alarm method further includes:

and judging whether the change trend of third characteristic information associated with the second characteristic information in the second physiological signal meets a preset trend or not. Wherein the third characteristic information has a different rhythmic variation from the second characteristic information. If yes, determining that the second physiological signal meets the second preset condition. If not, determining that the second physiological signal does not meet the second preset condition. The preset trend may be a downward trend or an upward trend.

For example, when the first alarm is a cardiac arrest alarm, a first preset condition corresponding to the cardiac arrest alarm is that QRS complex feature information is not detected in the electrocardiograph signal or the QRS complex feature information is not matched with preset QRS complex feature information; the first physiological signal is the electrocardiosignal, and the second physiological signal is the invasive blood pressure signal and/or the blood oxygen signal; the first characteristic information is QRS complex characteristic information, the second characteristic is pulse characteristic information, and the third characteristic is blood oxygen value and/or blood pressure value. When the first alarm is a respiratory asphyxia alarm, a first preset condition corresponding to the respiratory asphyxia alarm is that respiratory characteristic information of the respiratory signal is not matched with preset respiratory characteristic information; the first characteristic information and the second characteristic information are both respiratory signals. The Respiratory characteristic information includes Respiratory frequency and Respiratory wave waveform, for example, when the patient is suffocated, respiratory signals acquired by the Respiratory sensor accessory are weak, that is, respiratory Rate (RESP) exceeds a preset Respiratory frequency. The respiratory rate refers to the number of breaths per minute, and the preset respiratory rate refers to the number of breaths per minute of a normal person. When the first alarm is a heart rate alarm event, the alarm condition corresponding to the heart rate alarm event is that the heart rate is too high or too low, and the first characteristic information is heart rate characteristic information; the second characteristic information is pulse characteristic information.

In general, in the same time, QRS complex characteristic information obtained by analyzing the electrocardiographic signals of the same patient and pulse characteristic information obtained by analyzing the invasive blood pressure signals and blood oxygen signals have the same rhythmic change; the first breathing characteristic information obtained by analyzing electrocardiosignals, invasive blood pressure signals and blood oxygen signals of the same patient and the second breathing characteristic information obtained by analyzing the breathing signals have the same rhythmic change; the heart rate characteristic information analyzed and acquired from the electrocardiosignals of the same patient has the same rhythmic change as the pulse characteristic information analyzed and acquired from the invasive blood pressure signals and the blood oxygen signals. Therefore, the second characteristic information in the second physiological signal is analyzed, and the first alarm is confirmed according to the analysis result, so that judgment of whether the abnormality of the first physiological signal is physiological abnormality caused by the change of the physical condition of a patient or detection abnormality caused by the connection abnormality of medical equipment or self fault and other factors is realized, the alarm accuracy is improved, delay treatment caused by 'alarm fatigue' of medical staff is avoided, and the improvement of medical quality is facilitated.

Step S309, outputting the first alarm.

When the second physiological signal meets the second preset condition, the abnormal first physiological signal meeting the first preset condition corresponding to the first alarm is indicated to be physiological abnormality caused by the change of the physical condition of the patient, so that the processor controls to immediately output the first alarm, and medical staff can intervene in time based on the output first alarm, thereby not only improving the accuracy of the alarm, ensuring the timeliness of the alarm and solving the potential safety hazard caused by untimely and false alarm of the alarm. Optionally, when the second physiological signal meets the second preset condition, the alarm level of the first alarm can be adjusted to be higher, so that medical staff can timely give corresponding rescue treatment according to the first alarm, and illness delay is avoided.

Step S310, delaying outputting the first alarm; or, shielding the first alarm; or, adjusting the alarm level of the first alarm.

The alarm method further comprises the following steps:

outputting the first alarm in a preset first alarm mode when the second physiological signal is determined to meet the second preset condition in the first time period, wherein the preset first alarm mode comprises at least one of immediately outputting the first alarm and adjusting an alarm level;

When the second physiological signal is determined to not meet the second preset condition in the first time period, the output of the first alarm is forbidden; or outputting the first alarm according to a preset second alarm mode, wherein the preset second alarm mode comprises at least one of shielding, delaying output and adjusting alarm level of the first alarm, and the preset first alarm mode is different from the preset second alarm mode.

In case that the first physiological signal is detected to meet a first preset condition corresponding to a first alarm in a first time period, if a second physiological signal associated with the first physiological signal also meets the second preset condition in the first time period, the abnormality of the first physiological signal is indicated to be possibly physiological abnormality caused by the change of the physical condition of the patient, and at the moment, the alarm level is immediately output and/or adjusted by executing the first alarm. If a second physiological signal associated with the first physiological signal does not meet the second preset condition for the first period of time, indicating that the abnormality of the first physiological signal may be a detectable abnormality by performing at least one of masking, delaying output, and adjusting an alarm level on the first alarm. In this way, the medical device adjusts the first alarm based on the analysis result of the second physiological signal associated with the first physiological signal, so as to facilitate the medical staff to perform effective intervention on the first alarm, not only improve the alarm accuracy, but also avoid delay treatment of the medical staff due to 'alarm fatigue', and facilitate the improvement of medical quality.

The alarm method further comprises the following steps: and outputting a prompt message when the duration time of delaying outputting the first alarm is greater than or equal to the preset time.

The preset time may be customized by the medical staff, or may be factory default, for example, 20s, 30s, 40s, which is not specifically limited herein. For example, assuming that the preset time is 30s, in the case that the medical device generates a corresponding first alarm according to the abnormal first physiological signal, if the first physiological signal is still abnormal and the duration time is 20s, the output of the prompt information may be prohibited; if the first physiological signal is still abnormal and the duration is 40s, the prompt message can be output. The prompt information can be sound, lamplight, graphics and texts or a combination of the sound, the lamplight, the graphics and the texts. The prompt information is used for representing prompt contents of abnormal operation of the sensor accessory, such as falling off or poor contact of the sensor accessory; alternatively, the sensor attachment fails. So, medical personnel can in time adjust the connection of sensor annex or change normal sensor annex based on the prompt message to ensure that the first physiological signal that detects resumes normally, thereby avoid medical personnel to delay the treatment because of "warning tired", and be favorable to the promotion of medical quality.

For ease of explanation, the first physiological signal and the second physiological signal are assumed herein to be associated signals. When the first physiological signal meets a first preset condition corresponding to the first alarm, the medical equipment generates the corresponding first alarm, and the first physiological signal, the second physiological signal and the first alarm are subjected to fusion analysis.

Through intensive clinical research, it is found that this phenomenon is not necessarily accurate when cardiac arrest is detected by electrocardiographic monitoring. If the patient does not have the heart beat symptom, the phenomenon that the electrocardio medical equipment does not display any waveform and is in a straight line possibly occurs because of the reasons that the electrode plate detected by the electrocardio monitoring is in contact failure or falls off, the electrocardio medical equipment fails, and the like, so that under the condition, if the medical equipment outputs heart beat alarm, the medical personnel can be caused to generate the false image of heart beat of the patient, thereby reducing the accuracy of the medical equipment for outputting heart beat alarm and bringing alarm fatigue to the medical personnel. According to the heart beat alarm and electrocardiosignals, invasive blood pressure signals and blood oxygen signals are subjected to fusion analysis, so that the accuracy of heart beat alarm is improved, delay treatment of medical staff due to alarm fatigue is avoided, and improvement of medical quality is facilitated.

Referring to fig. 4, fig. 4 is a flowchart of an alarm method according to a second embodiment of the present application. As shown in fig. 4, the alarm method is applied to a medical device 100 for monitoring vital sign parameters of a patient. It will be appreciated that the alarm method may also be applied to the medical system 1000 described above, i.e. the alarm method may be applied to the central station 211 as well as to the bedside monitor 212. Specifically, fig. 4 shows an alarm method when an abnormal detection occurs in an electrocardiosignal in the monitoring process to generate a cardiac arrest alarm, which comprises the following steps.

Step S401, acquiring electrocardiosignals.

The electrocardiosignals can be physiological signals acquired by directly acquiring the electrocardiosignals by an electrocardiosignal accessory of the medical equipment or electrocardiosignals indirectly acquired by transmitting the physiological signals to the medical equipment after acquiring the physiological signals by an external device.

Step S403, determining whether the electrocardiograph signal meets a first preset condition corresponding to a cardiac arrest alarm. If yes, go to step S405; if not, step S401 is performed.

In the monitoring process, the processor analyzes the received electrocardiosignals in real time, and judges whether the electrocardiosignals meet the alarm conditions corresponding to the cardiac arrest alarm according to the analysis result. When the heart of the patient stops beating, all waveforms in the electrocardiogram corresponding to the electrocardiosignal may be completely or partially disappeared. When all waveforms in the electrocardiogram disappear, the P wave and the QRS wave group on the electrocardiogram disappear, and the electrocardiogram is in a straight line state. At this time, the whole heart stops the electrical and mechanical contractile activities, i.e. the heart pumps blood outwards, blood supply to all organs is interrupted, the heartbeat disappears, and the aorta does not beat, nor does the blood pressure measure. When all of the waveform portions of the electrocardiogram disappear, the QRS complex on the electrocardiogram is broad or the QRS complex is incomplete, and ventricular escape rhythms can be seen from the electrocardiogram. At this point, there is electrical activity in the heart, but there is no mechanical contractile activity in the heart, where the heart is electromechanically separated, as seen in cases of acute myocardial infarction, heart rupture, massive pericardial tamponade, and the end state of severe heart disease. At this time, patients experience cardiac arrest and require immediate effective, high quality cardiopulmonary resuscitation, including chest compressions, airway patency, and artificial respiration.

It can be understood that, in the monitoring process, when the electrocardiograph lead detection is interfered by noise or electrode virtual connection, sensor fault and the like, the electrocardiograph signal is interrupted, and at the moment, the electrocardiograph corresponding to the electrocardiograph signal does not contain QRS complex characteristic information, so that the electrocardiograph signal meets the alarm condition of the cardiac arrest alarm.

The first preset condition is an alarm condition of the cardiac arrest alarm, namely the electrocardiosignal does not contain QRS complex characteristic information; or the QRS complex characteristic information is not matched with preset QRS complex characteristic information, wherein the preset QRS complex characteristic information refers to QRS complex characteristic information detected by a patient under normal conditions.

The judging whether the electrocardiosignal meets a first preset condition corresponding to cardiac arrest alarming specifically comprises the following steps:

judging whether the electrocardiosignal contains QRS complex characteristic information corresponding to the cardiac arrest alarm. When judging that the electrocardiosignal does not contain the QRS complex characteristic information corresponding to the cardiac arrest alarm, judging that the electrocardiosignal meets a first preset condition corresponding to the cardiac arrest alarm;

When judging that the electrocardiosignal contains the QRS complex characteristic information corresponding to the cardiac arrest alarm, judging whether the QRS complex characteristic information is matched with preset QRS complex characteristic information or not; if yes, judging that the electrocardiosignal meets a first preset condition corresponding to the cardiac arrest alarm. If not, judging that the electrocardiosignal does not meet a first preset condition corresponding to the cardiac arrest alarm.

It will be appreciated that, in general, when a patient experiences cardiac arrest, all waveforms in the electrocardiogram corresponding to the electrocardiographic signals disappear, i.e., the waveforms in the electrocardiogram are in a substantially straight line state. Therefore, the determining whether the electrocardiosignal meets the first preset condition corresponding to the cardiac arrest alarm may further include: judging whether the waveform of the electrocardiogram is in a preset shape, for example, the preset shape is a straight line. When judging that the waveform of the electrocardiogram is in the preset shape, judging that the electrocardiosignal meets a first preset condition corresponding to the cardiac arrest alarm; and when judging that the waveform of the electrocardiogram does not take the preset shape, judging that the electrocardiosignal does not meet a first preset condition corresponding to the cardiac arrest alarm. It should be noted that, whether the first physiological signal meets the first preset condition corresponding to the first alarm may also be implemented by adopting other existing schemes, which is not described herein.

Step S405, acquiring an invasive blood pressure signal and/or a blood oxygen signal associated with the electrocardiographic signal.

And when judging that the electrocardiosignal meets a first preset condition corresponding to the cardiac arrest alarm, the processor controls to acquire an invasive blood pressure signal and/or a blood oxygen signal associated with the electrocardiosignal. The same time periods corresponding to the electrocardiosignal and the invasive blood pressure signal and/or the blood oxygen signal refer to a time period corresponding to a first preset condition for judging whether the electrocardiosignal meets the corresponding cardiac arrest alarm, namely a time period corresponding to the cardiac arrest alarm, hereinafter referred to as a first time period.

Step S407, determining whether the invasive blood pressure signal and/or the blood oxygen signal meet a second preset condition. If so, step S409 is performed. If not, step S410 is performed.

The judging whether the invasive blood pressure signal and/or the blood oxygen signal meet a second preset condition comprises the following steps:

judging whether the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the cardiac arrest alarm or not;

if not, determining that the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition.

Wherein the pulse characteristic information includes, but is not limited to, one of pulse rate and pulse wave waveform or a combination thereof. The processor may analyze and obtain pulse characteristic information from the invasive blood pressure signal and/or the blood oxygen signal. The pulse rate refers to the detected pulse rate per minute and is related to the beating rhythm of the heart. When the invasive blood pressure signal and/or the blood oxygen signal do not contain pulse characteristic information corresponding to the cardiac arrest alarm, the abnormal electrocardiosignal is indicated to be possibly physiological abnormality caused by the change of the physical condition of the patient. If the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the cardiac arrest alarm, judging whether the pulse characteristic information is matched with preset pulse characteristic information. If yes, determining that the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. Wherein the preset pulse feature information includes, but is not limited to, at least one of the QRS complex feature information, template pulse feature information, and historical pulse feature information in a second physiological signal. Wherein the pulse characteristic information includes, but is not limited to, at least one of pulse rate and pulse wave waveform.

Specifically, in some embodiments, the alarm method includes: when judging that the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the cardiac arrest alarm, judging whether the electrocardiosignal contains QRS complex characteristic information corresponding to the cardiac arrest alarm and the change trend of the pulse characteristic information are consistent. If yes, determining that the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. If not, determining that the invasive blood pressure signal and/or the blood oxygen signal do not meet the second preset condition. The time period corresponding to the pulse characteristic information is the same as the time period corresponding to the QRS complex characteristic information.

In some embodiments, the alert method comprises: when judging that the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the cardiac arrest alarm, judging whether the pulse characteristic information is matched with template pulse characteristic information. If yes, determining that the second physiological signal meets the second preset condition. If not, determining that the invasive blood pressure signal and/or the blood oxygen signal do not meet the second preset condition. The time period corresponding to the pulse characteristic information is the same as the time period corresponding to the QRS complex characteristic information in the first physiological signal.

In some embodiments, the alert method comprises: when judging that the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the cardiac arrest alarm, judging whether the similarity of the pulse characteristic information in a first time period and a second time period meets the preset similarity. The first time period is a time period corresponding to a first preset condition for judging whether the cardiac arrest alarm is met or not for the electrocardiosignal, namely the time period corresponding to the cardiac arrest alarm, and the second time period is earlier than the first time period. If yes, determining that the second physiological signal meets the second preset condition, and if not, determining that the invasive blood pressure signal and/or the blood oxygen signal does not meet the second preset condition.

In some embodiments, the alert method comprises: when judging that the invasive blood pressure signal and/or the blood oxygen signal do not contain pulse characteristic information corresponding to the cardiac arrest alarm, judging whether the change trend of the blood pressure value and/or the blood oxygen value associated with the pulse characteristic information in the invasive blood pressure signal and/or the blood oxygen signal meets a preset trend or not. If yes, determining that the second physiological signal meets the second preset condition. If not, determining that the second physiological signal does not meet the second preset condition.

It can be understood that, under the condition that the medical device generates the cardiac arrest alarm, if the invasive blood pressure signal and the blood oxygen signal associated with the cardiac signal do not include pulse characteristic information, it indicates that the abnormality of the cardiac signal meeting the first preset condition corresponding to the cardiac arrest alarm is physiological abnormality caused by the change of the physical condition of the patient, that is, the patient has the cardiac arrest symptom, at this moment, the medical device immediately outputs the cardiac arrest alarm, so that medical staff can timely take corresponding rescue measures for the patient, and avoid the delay of the illness state. Further, when the patient has a cardiac arrest symptom, the blood pressure value and the blood oxygen value of the patient also have sudden drops, wherein the blood pressure value and the blood oxygen value do not have the same rhythmic change with the pulse characteristic information and the QRS complex characteristic information. Therefore, by judging whether pulse characteristic information is detected in the invasive blood pressure signal and/or the blood oxygen signal and judging whether the blood pressure value and the change trend of the blood pressure value extracted from the invasive blood pressure signal and/or the blood oxygen signal are abnormal (such as suddenly reduced or suddenly reduced), the accuracy of judging whether the invasive blood pressure signal and the blood oxygen signal are abnormal is further improved, the alarm accuracy is further improved, delay treatment caused by alarm fatigue of medical staff is avoided, and the improvement of medical quality is facilitated.

Those skilled in the art will appreciate that, in order to simplify the algorithm complexity and shorten the analysis time of the alarm information, only the invasive blood pressure signal or the blood oxygen signal and the electrocardiosignal may be subjected to fusion analysis. In order to further improve the alarm accuracy, fusion analysis can be performed on the invasive blood pressure signal and the blood oxygen signal and the electrocardiosignals respectively, and if and only if the invasive blood pressure signal and the blood oxygen signal do not meet the second preset condition, it is determined that the abnormality of the electrocardiosignals meeting the first preset condition corresponding to the cardiac arrest alarm is physiological abnormality caused by the change of the physical condition of the patient. Optionally, when the associated signal includes a plurality of yes, the abnormality analysis of each second physiological signal may be performed one by one according to the set priority, and the fusion analysis may refer to the specific description of the above embodiment, which is not repeated herein.

Step S409, outputting the cardiac arrest alarm.

When the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition, the abnormal electrocardiosignals meeting the first preset condition corresponding to the cardiac arrest alarm are indicated to be physiological abnormal due to the change of the physical condition of a patient, so that the processor controls to immediately output the cardiac arrest alarm, and medical staff can intervene in time based on the output cardiac arrest alarm, thereby not only improving the accuracy of the alarm, ensuring the timeliness of the alarm and solving the potential safety hazard caused by untimely and false alarm of the alarm. Optionally, when the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition, the alarm level of the cardiac arrest alarm can be increased, so that medical staff can timely give corresponding rescue treatment according to the cardiac arrest alarm, and the condition delay is avoided.

Step S410, delaying outputting the cardiac arrest alarm; or shielding the cardiac arrest alert; or, adjusting the alarm level of the cardiac arrest alarm.

When the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition, the abnormal electrocardiosignals meeting the first preset condition corresponding to the cardiac arrest alarm are indicated to be physiological abnormal due to the change of the physical condition of a patient, so that the processor controls to prohibit the output of the cardiac arrest alarm or delay the output of the cardiac arrest alarm or adjust the alarm level of the cardiac arrest alarm, thereby improving the working efficiency of medical staff and greatly reducing the workload. Optionally, when it is determined that the invasive blood pressure signal and/or the blood oxygen signal do not meet the second preset condition, an abnormality of the electrocardiograph signal that indicates that the first preset condition corresponding to the cardiac arrest alarm is met may be a detectable abnormality, and the alarm level of the cardiac arrest alarm may be lowered, so that the medical staff has more time to preferentially process the alarm with a high alarm level.

The alarm method further comprises the following steps: and outputting a prompt message when the duration time of delayed output of the cardiac arrest alarm is greater than or equal to the preset time. The prompting information may refer to the specific description of the first embodiment, which is not repeated here.

In the embodiment of the invention, the accuracy of the cardiac arrest alarm is improved by carrying out fusion analysis on the cardiac arrest alarm, the electrocardiosignal, the invasive blood pressure signal and the blood oxygen signal, and the delay of treatment of medical staff due to alarm fatigue is avoided, thereby being beneficial to the improvement of medical quality. In addition, by means of abnormality analysis of invasive blood pressure signals and blood oxygen signals associated with the electrocardiosignals, whether the electrocardiosignal abnormality belongs to a detectable abnormality or a physiological abnormality is determined, algorithm complexity is simplified, analysis time of alarm information is shortened, and therefore alarm information processing efficiency and alarm management efficiency are improved.

Through intensive clinical research, it is found that this phenomenon is not necessarily accurate when respiratory apnea is found through respiratory monitoring. If the patient does not have the respiratory distress symptom, the phenomenon that the respiratory medical equipment displays zero respiration possibly occurs due to the reasons of failure or falling of contact of the respiratory monitoring detection element or failure of the respiratory medical equipment, so that under the condition, if the medical equipment outputs the respiratory distress alarm, the medical personnel can be caused to have the respiratory distress artifact of the patient, the accuracy of the medical equipment outputting the respiratory distress alarm is reduced, and the problem of alarm fatigue is brought to the medical personnel. When the patient generates the respiratory asphyxia, the electrocardiograph signal, the invasive blood pressure signal and the blood oxygen signal are subjected to fusion analysis, respiratory characteristic information is obtained based on the analysis, and whether the patient generates the respiratory asphyxia is judged according to the respiratory characteristic information, so that the accuracy of respiratory asphyxia alarm is improved, delay treatment of medical staff due to alarm fatigue is avoided, and the improvement of medical quality is facilitated.

Referring to fig. 5, fig. 5 is a flowchart of an alarm method according to a third embodiment of the present application. As shown in fig. 5, the alarm method is applied to a medical device 100 for monitoring vital sign parameters of a patient. It will be appreciated that the alarm method may also be applied to the medical system 1000 described above, i.e. the alarm method may be applied to the central station 211 as well as to the bedside monitor 212. The alarm method comprises the following steps. Specifically, fig. 5 shows an alarm method when a respiratory signal is abnormal in detection during monitoring to generate a respiratory asphyxia alarm, which comprises the following steps.

In step S501, a respiration signal is acquired.

The respiratory signal can be a physiological signal acquired by directly acquiring the respiratory signal by a respiratory sensor accessory of the medical equipment or an indirect respiratory signal acquired by acquiring the respiratory signal by an external device and then transmitting the respiratory signal to the medical equipment.

Step S503, determining whether the respiratory signal meets a first preset condition corresponding to a respiratory distress alarm. If yes, go to step S505; if not, the process returns to step S501, i.e. the respiratory signal is acquired.

The first preset condition is an alarm condition of the respiratory distress alarm, namely the respiratory signal does not contain respiratory characteristic information corresponding to the respiratory distress alarm; alternatively, the respiratory feature information does not match the template respiratory feature information. Wherein the template respiratory characteristic information refers to respiratory characteristic information detected by a patient under normal conditions. The respiratory characteristic information in the respiratory signal includes at least one of respiratory wave morphology and respiratory frequency. The respiratory rate refers to the number of breaths per minute and is related to the movement rhythm of the respiratory muscle, for example, one breath is one time of chest relief, i.e. one breath is inhaled and one breath is exhaled.

Specifically, the judging whether the respiratory signal meets the first preset condition corresponding to the respiratory distress alarm specifically includes:

judging whether the respiratory signal contains respiratory characteristic information corresponding to the respiratory asphyxia alarm. When the respiratory signal is judged to not contain the respiratory characteristic information corresponding to the respiratory distress alarm, judging that the respiratory signal meets a first preset condition corresponding to the respiratory distress alarm;

when judging that the respiratory signal contains respiratory characteristic information corresponding to the respiratory asphyxia alarm, judging whether the respiratory characteristic information is matched with preset respiratory characteristic information or not; if yes, judging that the respiratory signal meets a first preset condition corresponding to respiratory asphyxia alarm. If not, judging that the respiratory signal does not meet the first preset condition corresponding to the respiratory asphyxia alarm.

During the monitoring process, the processor analyzes the received respiratory signals in real time, and judges whether the respiratory signals meet the alarm conditions corresponding to the respiratory asphyxia alarm according to the analysis result. When the pasting position of the breathing sensor accessory is not ideal or the posture of the patient or the breathing signal detected by the breathing sensor accessory is weak due to symptoms of the patient, the breathing signal is determined to meet the alarm condition corresponding to the breathing asphyxia alarm.

The first respiration characteristic information described herein refers to respiration characteristic information included in the respiration signal, and the second respiration characteristic information refers to respiration characteristic information calculated from the electrocardiographic signal, the invasive blood pressure signal, and/or the blood oxygen signal.

Step S505, acquiring an electrocardiographic signal, an invasive blood pressure signal and/or a blood oxygen signal associated with the respiration signal.

And when the respiratory signal is judged to meet a first preset condition corresponding to the respiratory asphyxia alarm, the processor controls to acquire the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal which are associated with the respiratory signal. The time period corresponding to the respiratory signal is the same as the time period corresponding to the electrocardiograph signal, the invasive blood pressure signal and/or the blood oxygen signal, and is used for judging whether the time period corresponding to the first preset condition corresponding to the respiratory distress alarm is met or not by the respiratory signal, namely, the time period corresponding to the respiratory distress alarm is hereinafter referred to as a first time period.

Step S507, determining whether the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet a second preset condition. If yes, go to step S509; if not, step S510 is performed.

The judging whether the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet a second preset condition comprises the following steps:

judging whether the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal contain first breathing characteristic information corresponding to the breathing asphyxia alarm or not;

if not, determining that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition.

The processor may analyze and obtain the first respiration characteristic information from the electrocardiographic signal, the invasive blood pressure signal, and/or the blood oxygen signal. Wherein the first respiratory characteristic information includes, but is not limited to, one or a combination of respiratory rate and respiratory wave waveform. When the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal do not contain the first breathing characteristic information corresponding to the breathing asphyxia alarm, the abnormal breathing signal is indicated to possibly belong to physiological abnormality caused by the change of the physical condition of the patient. If the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal contain first breathing characteristic information corresponding to the breathing asphyxia alarm, judging whether the first breathing characteristic information is matched with first preset breathing characteristic information. If yes, determining that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. Wherein the first preset respiratory feature information includes, but is not limited to, at least one of the second respiratory feature information, the template respiratory feature information, and historical respiratory feature information in a second physiological signal.

Specifically, in some embodiments, the alarm method includes: when judging that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal contain first breathing characteristic information corresponding to the breathing asphyxia alarm, judging whether the variation trend of the first breathing characteristic information is consistent with that of second breathing characteristic information corresponding to the breathing asphyxia alarm contained in the breathing signal. If yes, determining that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. If not, determining that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal do not meet the second preset condition.

In some embodiments, the alert method comprises: and judging whether the first respiration characteristic information is matched with the template respiration characteristic information or not when judging that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal contain the first respiration characteristic information corresponding to the respiration asphyxia alarm. If yes, determining that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. If not, determining that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal do not meet the second preset condition.

Judging whether the similarity of the first respiration characteristic information in a first time period and a second time period meets preset similarity or not when judging that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal contain first respiration characteristic information corresponding to the respiration asphyxia alarm; the first time period is a time period corresponding to a first preset condition for judging whether the respiratory distress alarm is met or not by the respiratory signal, namely, the respiratory distress alarm corresponds to a time period, and the second time period is earlier than the first time period. If yes, determining that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. If not, determining that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal do not meet the second preset condition.

Step S509, outputting the respiratory distress alarm.

When judging that the respiratory signal meets the first preset condition corresponding to the respiratory distress alarm, the processor controls to immediately output the respiratory distress alarm because of physiological abnormality caused by the change of physical condition of a patient is indicated to meet the first preset condition corresponding to the respiratory distress alarm, so that medical staff can intervene in time based on the output respiratory distress alarm, the accuracy of the alarm is improved, the timeliness of the alarm is ensured, and the potential safety hazard caused by untimely and false alarm of the alarm is solved. Optionally, when judging that the electrocardiosignal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition, the alarm level of the respiratory distress alarm can be adjusted to be high, so that medical staff can timely give corresponding rescue treatment according to the respiratory distress alarm, and illness state delay is avoided.

Step S510, delaying outputting the respiratory distress alarm; or shielding the respiratory distress alarm; or adjusting the alarm level of the respiratory distress alarm.

Specifically, the method step S410 in the embodiment of fig. 4 may be referred to, and will not be described herein.

The alarm method further comprises the following steps: and outputting a prompt message when the duration of delayed output of the respiratory distress alarm is greater than or equal to the preset time. The prompting information may refer to the specific description of the first embodiment, which is not repeated here.

Through intensive clinical studies, it is found that this phenomenon is not necessarily accurate when the heart rate is too high or too low through electrocardiographic monitoring. If the heart rate of the patient is too high or too low, the phenomenon that the heart rate displayed by the electrocardio medical equipment is too high or too low may occur due to the failure or falling of the electrode plate contact detected by the electrocardio monitoring or the failure of the electrocardio medical equipment, so that under the condition, if the medical equipment outputs an alarm for too high or too low, the false image of the too high or too low heart rate of the patient is caused to the medical staff, the accuracy of the alarm for outputting the heart rate (too high or too low) by the medical equipment is reduced, and the alarm fatigue problem is caused to the medical staff. The heart rate too high or too low alarm, the electrocardiosignal, the invasive blood pressure signal and the blood oxygen signal are subjected to fusion analysis, so that the accuracy of heart rate alarm is improved, delay treatment of medical staff due to alarm fatigue is avoided, and the improvement of medical quality is facilitated.

Referring to fig. 6, fig. 6 is a flowchart of an alarm method according to a fourth embodiment of the present application. As shown in fig. 6, the alarm method is applied to a medical device 100 for monitoring vital sign parameters of a patient. It will be appreciated that the alarm method may also be applied to the medical system 1000 described above, i.e. the alarm method may be applied to the central station 211 as well as to the bedside monitor 212. The alarm method comprises the following steps. Specifically, fig. 6 shows an alarm method when an abnormal detection occurs in an electrocardiograph signal during monitoring to generate a heart rate alarm, which includes the following steps.

Step S601, acquiring an electrocardiograph signal.

Step S603, determining whether the electrocardiograph signal meets a first preset condition corresponding to heart rate alarm. If yes, go to step S605; if not, step S601 is executed.

The first preset condition is an alarm condition of the cardiac arrest alarm, namely that heart rate characteristic information in the electrocardiosignal is not matched with template heart rate characteristic information, wherein the template heart rate characteristic information is heart rate characteristic information detected by a patient under normal conditions. The heart rate characteristic information in the electrocardiograph signals includes at least one of an electrocardiographic waveform and a heart rate.

Judging whether the electrocardiosignal meets a first preset condition corresponding to heart rate alarm or not specifically comprises the following steps:

judging whether the electrocardiosignal contains heart rate characteristic information corresponding to the heart rate alarm. When judging that the electrocardiosignal does not contain the heart rate characteristic information, judging that the electrocardiosignal meets a first preset condition corresponding to the heart rate alarm;

when judging that the electrocardiosignal contains the corresponding heart rate characteristic information, judging whether the heart rate characteristic information is matched with preset heart rate characteristic information or not; if yes, judging that the electrocardiosignal meets a first preset condition corresponding to the heart rate alarm. If not, judging that the electrocardiosignal does not meet a first preset condition corresponding to the heart rate alarm.

In the monitoring process, the processor analyzes the received electrocardiosignals in real time, and judges whether the electrocardiosignals meet the alarm conditions corresponding to the heart rate alarm according to the analysis result. When the heart rate of the patient is too high or too low, the QT interval length corresponding to the electrocardiosignal changes, and the processor judges that the electrocardiosignal meets a first preset condition corresponding to heart rate alarm. It will be appreciated that the QT interval length is closely related to the rate of heart rate, the faster the heart rate, the shorter the QT interval, and vice versa. The normal range of QT interval is 0.32-0.44s at 60-100 beats/min. The QT interval refers to the interval from the start of the QRS complex to the end of the T wave, representing the time required for the overall ventricular muscle depolarization and repolarization process. When the heart rate of the patient is normal, however, when the electrocardiosignal detection is interfered by noise or electrode virtual connection, sensor faults and the like, the electrocardiosignal is caused to be monitored and interrupted, at the moment, the characteristic information of the QRS complex or the characteristic information of the QRS complex is not detected in the electrocardiosignal, and the processor judges that the electrocardiosignal meets a first preset condition corresponding to the heart rate alarm.

Step S605 acquires an invasive blood pressure signal and/or a blood oxygen signal associated with the electrocardiographic signal.

And when judging that the electrocardiosignal meets a first preset condition corresponding to the cardiac arrest alarm, the processor controls to acquire the invasive blood pressure signal and/or the blood oxygen signal associated with the electrocardiosignal. The time period corresponding to the electrocardiosignal is the same as the time period corresponding to the invasive blood pressure signal and/or the blood oxygen signal, and both refer to the time period corresponding to the electrocardiosignal for judging whether the first preset condition corresponding to the heart rate alarm is met, namely the time period corresponding to the heart rate alarm, hereinafter referred to as the first time period.

Step S607, determining whether the invasive blood pressure signal and/or the blood oxygen signal meet a second preset condition. If yes, go to step S609; if not, step S610 is performed.

judging whether the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the heart rate alarm or not;

The processor may analyze and obtain the pulse characteristic information from the invasive blood pressure signal and/or the blood oxygen signal. Wherein the pulse characteristic information includes, but is not limited to, one of pulse rate and pulse wave waveform or a combination thereof. When the invasive blood pressure signal and/or the blood oxygen signal do not contain pulse characteristic information corresponding to the heart rate alarm, the abnormal electrocardiosignal is indicated to be possibly physiological abnormality caused by the change of the physical condition of the patient. If the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the heart rate alarm, judging whether the pulse characteristic information is matched with preset pulse characteristic information. If yes, determining that the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. Wherein the preset pulse characteristic information includes, but is not limited to, at least one of the heart rate characteristic information, template pulse characteristic information, the invasive blood pressure signal, and/or historical pulse characteristic information in the blood oxygen signal.

Specifically, in some embodiments, the alarm method includes: when judging that the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the heart rate alarm, judging whether the change trend of the pulse characteristic information is consistent with the change trend of the heart rate characteristic information corresponding to the heart rate alarm contained in the electrocardiosignal. If yes, determining that the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. If not, determining that the invasive blood pressure signal and/or the blood oxygen signal do not meet the second preset condition.

In some embodiments, the alert method comprises: when judging that the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the heart rate alarm, judging whether the pulse characteristic information is matched with template pulse characteristic information. If yes, determining that the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. If not, determining that the invasive blood pressure signal and/or the blood oxygen signal do not meet the second preset condition.

In some embodiments, the alert method comprises: when judging that the invasive blood pressure signal and/or the blood oxygen signal contain pulse characteristic information corresponding to the heart rate alarm, judging whether the similarity of the pulse characteristic information in a first time period and a second time period meets preset similarity or not; the first time period is a time period corresponding to the heart rate alarm, and the second time period is earlier than the first time period. If yes, determining that the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition. If not, determining that the invasive blood pressure signal and/or the blood oxygen signal do not meet the second preset condition.

For example, when it is determined that the heart rate characteristic information obtained by analysis from the electrocardiograph signal meets the first preset condition and the pulse characteristic information obtained by analysis from the invasive blood pressure signal and the blood oxygen signal also meets the second preset condition, it is indicated that the heart rate alarm event generated by the medical device is not an artifact. And when judging that the heart rate characteristic information obtained by analysis from the electrocardiosignal meets the first preset condition and the pulse characteristic information obtained by analysis from the invasive blood pressure signal and the blood oxygen signal does not meet the second preset condition, indicating that a heart rate alarm event generated by medical equipment is an artifact. It should be noted that, the heart rate characteristic information meeting the first preset condition and the pulse characteristic information meeting the second preset condition means that the heart rate characteristic information and the pulse characteristic information meet the alarm condition of the heart rate alarm event. Therefore, through carrying out fusion analysis on the heart rate alarm event, the invasive blood pressure signal and the blood oxygen signal, the accuracy of heart rate alarm is improved, and the delay of treatment of medical staff due to alarm fatigue is avoided, so that the improvement of medical quality is facilitated.

Step S609, outputting the heart rate alarm.

Specifically, the method step S409 in the embodiment of fig. 4 may be referred to, which is not described herein.

Step S610, delaying outputting the heart rate alarm; or, shielding the heart rate alarm; or, adjusting the alarm level of the heart rate alarm.

The alarm method further comprises the following steps: and outputting a prompt message when the duration of delayed output of the heart rate alarm is greater than or equal to the preset time. The prompting information may refer to the specific description of the first embodiment, which is not repeated here.

In the embodiment of the invention, the electrocardiosignals and the invasive blood pressure signals and/or the blood oxygen signals are fused and analyzed, so that the accuracy of heart rate alarm is improved, delay of treatment caused by alarm fatigue of medical staff is avoided, and the improvement of medical quality is facilitated. In addition, whether the abnormality of the electrocardiosignal belongs to the detectable abnormality or the physiological abnormality is determined by judging whether pulse characteristic information obtained by analyzing the invasive blood pressure signal and/or the blood oxygen signal associated with the electrocardiosignal meets preset pulse characteristic information, so that the algorithm complexity is simplified, the analysis time of alarm information is shortened, the processing efficiency of the alarm information is improved, and the alarm management efficiency is improved.

The embodiment of the invention also provides a computer storage medium, wherein the computer storage medium can store a program, and the program can be executed to include part or all of the steps of any one of the alarm methods described in the embodiment of the method.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments.

It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the device embodiments described above are merely illustrative. The alarm method described above, when implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or partly in the form of a software product, or all or part of the technical solution, which is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc., and may specifically be a processor in the computer device) to execute all or part of the steps of the alarm method described above in the embodiments of the present invention. Wherein the aforementioned storage medium may comprise: a U-disk, a removable hard disk, a magnetic disk, an optical disk, a Read-Only Memory (abbreviated as ROM), a random access Memory (abbreviated as Random Access Memory, RAM), or the like.

The foregoing has outlined rather broadly the more detailed description of embodiments of the invention, wherein the principles and embodiments of the invention are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the invention; meanwhile, as those skilled in the art will appreciate, modifications will be made in the specific embodiments and application scope in accordance with the idea of the present invention, and the present disclosure should not be construed as limiting the present invention.

Claims

1. An alarm method, applied to a medical device for monitoring a patient's vital signs, characterized in that the alarm method comprises the following steps:

acquiring a first physiological signal;

Determining whether the first physiological signal satisfies a first preset condition corresponding to a first alarm;

When it is determined that the first physiological signal satisfies a first preset condition corresponding to the first alarm, acquiring a second physiological signal associated with the first physiological signal;

Determining whether the second physiological signal meets a second preset condition;

When it is determined that the second physiological signal meets the second preset condition, the first alarm is output.

2. The alarm method according to claim 1, characterized in that the alarm method further comprises:

When it is determined that the second physiological signal does not satisfy the second preset condition, the output of the first alarm is delayed; or the first alarm is shielded; or the alarm level of the first alarm is adjusted.

3. The alarm method according to claim 2 is characterized in that the alarm method further comprises: outputting a prompt message when the duration of the delayed output of the first alarm is greater than or equal to a preset time.

4. The alarm method according to claim 2, wherein the step of determining whether the second physiological signal satisfies a second preset condition specifically comprises:

determining whether the second physiological signal includes second characteristic information corresponding to the first alarm;

When it is determined that the second physiological signal does not include the second characteristic information corresponding to the first alarm, it is determined that the second physiological signal meets the second preset condition.

5. The alarm method according to claim 4, characterized in that the alarm method further comprises:

When determining that the second physiological signal contains the second characteristic information corresponding to the first alarm, determining whether the change trends of the first characteristic information corresponding to the first alarm in the first physiological signal are consistent with those of the second characteristic information; if so, determining that the second physiological signal satisfies the second preset condition; or,

When determining that the second physiological signal contains the second characteristic information corresponding to the first alarm, determining whether the second characteristic information corresponding to the first alarm in the second physiological signal matches the template characteristic information; if so, determining that the second physiological signal satisfies the second preset condition; or,

When determining whether the second physiological signal contains second characteristic information corresponding to the first alarm, determine whether the similarity between the second characteristic information in the first time period and the second time period meets the preset similarity; wherein, the first time period is the time period corresponding to the first preset condition corresponding to the first alarm used by the first physiological signal to determine whether it meets the first time period, and the second time period is earlier than the first time period; if so, determine that the second physiological signal meets the second preset condition.

6. The alarm method as described in claim 5 is characterized in that the first characteristic information and the second characteristic information have the same rhythmic change, and the first characteristic information and the second characteristic information are used to reflect the rhythm information of the heart or the rhythm information of the respiratory muscles.

7. The alarm method according to claim 4, characterized in that after determining that the second physiological signal does not contain the second characteristic information corresponding to the first alarm, the alarm method further comprises:

Determine whether a change trend of third characteristic information associated with the second characteristic information in the second physiological signal meets a preset trend; wherein the third characteristic information and the second characteristic information have different rhythmic changes;

If so, it is determined that the second physiological signal meets the second preset condition.

8. The alarm method as described in claim 1 is characterized in that the first physiological signal and the second physiological signal include at least one of an electrocardiogram signal, a blood oxygen signal, an invasive blood pressure signal and a respiratory signal, and the first physiological signal is different from the second physiological signal.

9. The alarm method according to claim 8, characterized in that the first alarm is a cardiac arrest alarm, the first physiological signal is the electrocardiogram signal, the second physiological signal is the invasive blood pressure signal and/or the blood oxygen signal, the first characteristic information includes QRS wave group characteristic information, the second characteristic information is pulse characteristic information; the third characteristic information includes blood pressure value and/or blood oxygen value; or,

The first alarm is a respiratory suffocation alarm, the first physiological signal is the respiratory signal, the second physiological signal is the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal, and the first characteristic information and the second characteristic information are both respiratory characteristic information; or

The first alarm is a heart rate alarm event, the first physiological signal is an electrocardiogram signal, the second physiological signal is the invasive blood pressure signal and/or the blood oxygen signal, the first characteristic information is heart rate characteristic information, and the second characteristic information is pulse characteristic information, wherein the pulse characteristic information includes pulse rate and pulse wave waveform.

10. An alarm method, applied to a medical device for monitoring a patient's vital sign parameters, characterized in that the alarm method comprises the following steps:

Obtain ECG signals;

Determining whether the electrocardiogram signal satisfies a first preset condition corresponding to a cardiac arrest alarm;

When it is determined that the electrocardiogram signal satisfies a first preset condition corresponding to the cardiac arrest alarm, acquiring an invasive blood pressure signal and/or a blood oxygen signal associated with the electrocardiogram signal;

Determining whether the invasive blood pressure signal and/or the blood oxygen signal meets a second preset condition;

When it is determined that the invasive blood pressure signal and/or the blood oxygen signal meets the second preset condition, the cardiac arrest alarm is output.

11. The alarm method according to claim 10, wherein the step of determining whether the electrocardiogram signal satisfies a first preset condition corresponding to a cardiac arrest alarm specifically comprises:

Determining whether the electrocardiogram signal contains QRS wave group characteristic information corresponding to the cardiac arrest alarm; if not, determining that the electrocardiogram signal satisfies a first preset condition corresponding to the cardiac arrest alarm;

If so, it is determined whether the QRS complex characteristic information matches the preset QRS complex characteristic information; if so, it is determined whether the electrocardiogram signal satisfies the first preset condition corresponding to the cardiac arrest alarm.

12. The alarm method according to claim 10, wherein the determining whether the invasive blood pressure signal and/or the blood oxygen signal satisfies a second preset condition comprises:

Determining whether the invasive blood pressure signal and/or the blood oxygen signal contains pulse characteristic information corresponding to the cardiac arrest alarm;

If not, it is determined that the invasive blood pressure signal and/or the blood oxygen signal meets the second preset condition.

13. The alarm method according to claim 12, characterized in that the alarm method further comprises:

When determining that the invasive blood pressure signal and/or the blood oxygen signal contains the pulse characteristic information corresponding to the cardiac arrest alarm, determining whether the QRS wave group characteristic information corresponding to the cardiac arrest alarm contained in the electrocardiogram signal is consistent with the change trend of the pulse characteristic information;

If yes, it is determined that the invasive blood pressure signal and/or the blood oxygen signal meets the second preset condition; or,

When determining that the invasive blood pressure signal and/or the blood oxygen signal contains the pulse characteristic information corresponding to the cardiac arrest alarm, determining whether the pulse characteristic information matches the template pulse characteristic information;

If yes, it is determined that the second physiological signal satisfies the second preset condition; or,

When determining whether the invasive blood pressure signal and/or the blood oxygen signal contains pulse characteristic information corresponding to the cardiac arrest alarm, determining whether the similarity of the pulse characteristic information in a first time period and a second time period meets a preset similarity; wherein the first time period is a time period corresponding to a first preset condition for the electrocardiogram signal to determine whether the electrocardiogram signal meets the cardiac arrest alarm, and the second time period is earlier than the first time period;

14. The alarm method according to claim 12, characterized in that after determining that the invasive blood pressure signal and/or the blood oxygen signal does not contain pulse characteristic information corresponding to the cardiac arrest alarm, the alarm method further comprises:

Determining whether a change trend of a blood pressure value and/or a blood oxygen value associated with the pulse characteristic information in the invasive blood pressure signal and/or the blood oxygen signal meets a preset trend;

15. An alarm method, applied to a medical device for monitoring a patient's vital sign parameters, characterized in that the alarm method comprises the following steps:

Get breathing signals;

Determining whether the breathing signal satisfies a first preset condition corresponding to a respiratory suffocation alarm;

When it is determined that the respiratory signal satisfies the first preset condition corresponding to the respiratory suffocation alarm, acquiring an electrocardiogram signal, a blood oxygen signal and/or a blood oxygen signal associated with the respiratory signal;

Determining whether the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal meets a second preset condition;

When it is determined that the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition, the respiratory apnea alarm is output.

16. The alarm method according to claim 15, wherein the determining whether the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal meets a second preset condition comprises:

Determining whether the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal contain first respiratory characteristic information corresponding to the respiratory suffocation alarm;

If not, it is determined that the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal meets the second preset condition.

17. The alarm method according to claim 16, characterized in that the alarm method further comprises:

When determining that the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal contain the first respiratory characteristic information corresponding to the respiratory apnea alarm, determine whether the first respiratory characteristic information is consistent with the change trend of the second respiratory characteristic information contained in the respiratory signal corresponding to the respiratory apnea alarm; if so, determine that the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition; or,

When it is determined that the invasive blood pressure signal and/or the blood oxygen signal contains the first respiratory characteristic information corresponding to the respiratory suffocation alarm, it is determined whether the first respiratory characteristic information matches the template respiratory characteristic information; if so, it is determined that the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition; or,

When determining whether the invasive blood pressure signal and/or the blood oxygen signal contains the first respiratory characteristic information corresponding to the respiratory apnea alarm, determine whether the similarity of the first respiratory characteristic information in the first time period and the second time period meets the preset similarity; wherein, the first time period is the time period corresponding to the first preset condition corresponding to the respiratory apnea alarm used by the respiratory signal to determine whether it meets the second preset condition, and the second time period is earlier than the first time period; if so, determine that the electrocardiogram signal, the invasive blood pressure signal and/or the blood oxygen signal meet the second preset condition.

18. An alarm method, applied to a medical device for monitoring a patient's vital sign parameters, characterized in that the alarm method comprises the following steps:

Obtain ECG signals;

Determining whether the electrocardiogram signal satisfies a first preset condition corresponding to a heart rate alarm;

When it is determined that the electrocardiogram signal satisfies the first preset condition corresponding to the heart rate alarm, acquiring an invasive blood pressure signal and/or a blood oxygen signal associated with the electrocardiogram signal;

When it is determined that the invasive blood pressure signal and/or the blood oxygen signal meets the second preset condition, the heart rate alarm is output.

19. The alarm method according to claim 18, wherein the step of determining whether the invasive blood pressure signal and/or the blood oxygen signal satisfies a second preset condition comprises:

Determining whether the invasive blood pressure signal and/or the blood oxygen signal contains pulse characteristic information corresponding to the heart rate alarm;

20. The alarm method according to claim 19, characterized in that the alarm method further comprises:

When determining that the invasive blood pressure signal and/or the blood oxygen signal contains the pulse characteristic information corresponding to the heart rate alarm, determine whether the pulse characteristic information is consistent with the change trend of the heart rate characteristic information corresponding to the heart rate alarm contained in the electrocardiogram signal; if so, determine that the invasive blood pressure signal and/or the blood oxygen signal meets the second preset condition; or,

When determining that the invasive blood pressure signal and/or the blood oxygen signal contains the pulse characteristic information corresponding to the heart rate alarm, determining whether the pulse characteristic information matches the template pulse characteristic information; if so, determining that the invasive blood pressure signal and/or the blood oxygen signal meets the second preset condition; or,

When determining whether the invasive blood pressure signal and/or the blood oxygen signal contains pulse characteristic information corresponding to the heart rate alarm, determine whether the similarity between the pulse characteristic information in the first time period and the second time period meets the preset similarity; wherein, the first time period is the time period corresponding to the first preset condition corresponding to the heart rate alarm used by the electrocardiogram signal to determine whether the heart rate alarm is met, and the second time period is earlier than the first time period; if so, it is determined that the invasive blood pressure signal and/or the blood oxygen signal meets the second preset condition.

21. A medical device, comprising a processor, wherein the processor is used for:

acquiring a first physiological signal;

22. The medical device as claimed in claim 21, characterized in that the medical device is any one of a monitor, a local central station, a remote central station, a cloud service system, and a mobile terminal.

23. A medical system, comprising the medical device according to claim 21.

24. A readable storage medium, characterized in that an interactive program is stored on the readable storage medium, and when the interactive program is executed by a processor, the alarm method according to any one of claims 1 to 20 is executed.