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WO2025231990A1 - Réservoir d'évaporation, procédé de sortie de gaz et support de stockage - Google Patents

Réservoir d'évaporation, procédé de sortie de gaz et support de stockage

Info

Publication number
WO2025231990A1
WO2025231990A1 PCT/CN2024/105782 CN2024105782W WO2025231990A1 WO 2025231990 A1 WO2025231990 A1 WO 2025231990A1 CN 2024105782 W CN2024105782 W CN 2024105782W WO 2025231990 A1 WO2025231990 A1 WO 2025231990A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
evaporator
output
container
volatile substance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/105782
Other languages
English (en)
Chinese (zh)
Inventor
埃克隆马蒂亚斯
刘陈诗涛
赖春红
徐喆
孟凡泗
邓强泉
周坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Prunus Medical Co Ltd
Original Assignee
Shenzhen Prunus Medical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Prunus Medical Co Ltd filed Critical Shenzhen Prunus Medical Co Ltd
Publication of WO2025231990A1 publication Critical patent/WO2025231990A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/18—Vaporising devices for anaesthetic preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/18—Vaporising devices for anaesthetic preparations
    • A61M16/183—Filling systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/201—Controlled valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3334—Measuring or controlling the flow rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling

Definitions

  • This application relates to the field of evaporator technology, specifically to an evaporator, a gas output method, and a storage medium.
  • Anesthetic drugs can be used to provide temporary anesthesia during surgery, avoiding discomfort for the patient.
  • Anesthetic drugs are typically entirely or partially liquid at room temperature, therefore, the delivery of the anesthetic is controlled using an vaporizer.
  • the function of the vaporizer is to controllably evaporate volatile liquid anesthetic drugs, such as desflurane, sevoflurane, and isoflurane, and deliver the evaporated gaseous anesthetic into the respiratory stream for subsequent administration to the patient.
  • the main technical problem this application addresses is the low precision of the anesthetic gas output from the evaporator.
  • one embodiment provides an evaporator, comprising;
  • Containers used to store volatile substances
  • a pressurizing device for pressurizing the volatile substances inside the container
  • a supply device for drawing out and discharging volatile liquid substances from the container
  • a vaporization device having a first input end, a second input end, and an output end, wherein the first input end is used to input a carrier gas, and the second input end is used to input a liquid volatile substance output by the supply device;
  • a control device is connected to the pressurizing device and the supply device respectively; the control device is used to control the pressurizing device to pressurize the container so that at least a portion of the volatile substance in the container is in a liquid state; and to control the supply device to output a preset amount of the liquid volatile substance in the container to the vaporization device;
  • the vaporization device is used to vaporize liquid volatile substances to obtain gaseous volatile substances, so that the gaseous volatile substances and the carrier gas are mixed in the vaporization device, and the mixed gas is output from the output end of the vaporization device.
  • the supply device includes a valve, and the control device controls the opening and closing of the valve to output a preset amount of liquid volatile substance from the container to the vaporization device.
  • the valve has a nozzle for spraying liquid volatiles into the vaporization device.
  • the evaporator further includes:
  • a heating device is used to heat the vaporization device
  • the control device is also used to control the heating device to heat the vaporization device, so that the liquid volatile substance is vaporized.
  • the evaporator further includes:
  • a temperature sensor is used to detect the temperature of the vaporization device and obtain a temperature signal
  • the control device is also used to determine whether the temperature of the vaporization device is lower than the preset temperature based on the temperature signal. If it is lower, the control device is used to heat the vaporization device so that the temperature of the vaporization device is greater than or equal to the preset temperature.
  • the evaporator further includes;
  • a mixing chamber has an input end and an output end; the input end of the mixing chamber is connected to the output end of the vaporization device for inputting the mixed gas, so that the mixed gas is mixed again, and the remixed gas is output from the output end of the mixing chamber.
  • the evaporator further includes:
  • a concentration sensor is used to detect the concentration of volatile substances in the mixed gas, or to detect the concentration of volatile substances in the remixed gas, and to obtain a concentration signal;
  • the control device is also used to determine whether the concentration of the volatile substance has reached the threshold concentration based on the concentration signal. If it has not reached the threshold concentration, the supply device is controlled to continue to deliver the liquid volatile substance to the vaporization device based on the concentration of the volatile substance until the concentration of the volatile substance reaches the threshold concentration.
  • the evaporator further includes:
  • a first controllable valve has a first end for inputting the carrier gas and a second end connected to the first input end; the first controllable valve is used to control whether its second end outputs the carrier gas to the first input end;
  • the second controllable valve has a first end for inputting the mixed gas or the remixed gas, and a second end for outputting the mixed gas or the remixed gas; the second controllable valve is used to control whether its second end outputs the mixed gas or the remixed gas.
  • the evaporator further includes:
  • a safety control device is used to monitor the operating status of the evaporator
  • the safety control device When the operating state is abnormal, the safety control device is used to generate an abnormal alarm signal
  • the safety control device When the operating state is abnormal, the safety control device is used to control the second end of the first controllable valve to stop outputting the carrier gas to the first input end;
  • the safety control device is used to control the second end of the second controllable valve to stop outputting the mixed gas or the remixed gas.
  • the evaporator further includes:
  • An adjustment setting device is used at least to set the concentration of volatile substances in the mixed gas or the remixed gas
  • the control device is also used to determine the preset amount based on the flow rate of the carrier gas and the concentration of the set volatile substance.
  • the evaporator further includes at least one of a flow sensor, a level sensor, and a pressure sensor;
  • the flow sensor is used to detect the flow rate of the carrier gas and obtain a flow signal; the control device is also used to determine the preset amount based on the flow signal, so that the volatile substances in the mixed gas reach a preset concentration;
  • the liquid level sensor is used to detect the remaining amount of liquid volatile substances in the container and obtain a liquid level signal; the control device is also used to determine whether the amount of liquid volatile substances in the container is lower than a threshold amount based on the liquid level signal, and if it is lower, generate a relevant alarm signal.
  • the pressure sensor is used to detect the pressure inside the container and obtain a pressure signal; the control device is also used to determine whether the pressure inside the container is lower than a preset pressure based on the pressure signal. If it is lower, the control device is used to pressurize the container so that the pressure inside the container is greater than or equal to the preset pressure; and/or, the control device is also used to obtain the output amount of the liquid volatile substance from the supply device based on the change in the pressure signal after the supply device outputs the liquid volatile substance.
  • the evaporator further includes:
  • Indicating device for indicating at least one of the following information:
  • the pressurization device includes a pump for introducing pressurized gas into the container to pressurize the container.
  • an evaporator comprising:
  • Containers used to store volatile substances
  • a pressurizing device for pressurizing a volatile substance within the container, such that the volatile substance is at least partially liquid
  • a supply device is used to extract and output a preset amount of volatile liquid substances from the container
  • a vaporization device is used to vaporize the liquid volatile substance output from the supply device to obtain a gaseous volatile substance for outputting the gaseous volatile substance.
  • the supply device includes a valve, and the control device controls the opening and closing of the valve to output a preset amount of liquid volatile substance from the container to the vaporization device.
  • the valve has a nozzle for spraying a liquid volatile substance to the vaporization device.
  • the evaporator further includes an atomizing device for atomizing the liquid volatile substance output from the supply device and then outputting it to the vaporizing device.
  • the evaporator further includes a heating device for heating the vaporization device to vaporize the liquid volatile substance.
  • the pressurization device includes a pump for introducing pressurized gas into the container to pressurize the container.
  • one embodiment provides a gas output method applied to an evaporator for storing volatile substances, the gas output method comprising:
  • the volatile substances inside the evaporator are pressurized so that at least part of the volatile substances are in a liquid state
  • a preset amount of volatile liquid substances are extracted and output from the evaporator through a supply device;
  • the liquid volatile substance output from the supply device is vaporized by a vaporization device to obtain a gaseous volatile substance, which is then used to output the gaseous volatile substance.
  • the supply device is used to spray out liquid volatile substances; or, the liquid volatile substances output by the supply device are atomized by an atomizing device and then vaporized by the vaporizing device to obtain gaseous volatile substances.
  • one embodiment provides a computer-readable storage medium storing a program that can be executed by a processor to implement the gas output method as described in the third aspect.
  • the control device controls the pressurizing device to pressurize the evaporator, so that the volatile substances in the evaporator are at least partially liquid. Then, the control device extracts a preset amount of liquid volatile substances from the evaporator, and the extracted liquid volatile substances are vaporized by the vaporization device to obtain gaseous volatile substances. Finally, the gaseous volatile substances are output. By controlling the output amount of liquid volatile substances and vaporizing them to obtain gaseous volatile substances for output, the output amount of gaseous volatile substances can be controlled.
  • controlling the output amount of liquid volatile substances can achieve higher precision control than controlling the output amount of gaseous volatile substances, after vaporizing the liquid volatile substances to obtain gaseous volatile substances, higher precision control of gaseous volatile substances can be achieved, thereby meeting the user's high precision requirements.
  • Figure 1 is a schematic diagram of the structure of an evaporator according to an embodiment
  • Figure 2 is a schematic diagram of the structure of an evaporator according to another embodiment
  • Figure 3 is a schematic diagram of the structure of an evaporator according to another embodiment
  • Figure 4 is a schematic flowchart of a gas output method according to one embodiment.
  • connection and “linkage” used in this application, unless otherwise specified, include both direct and indirect connections (linkages).
  • the evaporator is pressurized so that at least part of the volatile substances inside are in a liquid state.
  • a preset amount of the liquid volatile substances is then extracted from the evaporator, and the extracted liquid volatile substances are vaporized separately to obtain gaseous volatile substances.
  • the gaseous volatile substances are output.
  • This application controls the output amount of gaseous volatile substances by controlling the output amount of liquid volatile substances and vaporizing them to obtain gaseous volatile substances for output. Since controlling the output amount of liquid volatile substances allows for higher precision control compared to controlling the output amount of gaseous volatile substances, higher precision control can be achieved after vaporizing the liquid volatile substances to obtain gaseous volatile substances, thereby meeting the user's high-precision requirements.
  • the evaporator 100 includes a container 104, a pressurizing device 106, a supply device 108, a vaporization device 110, and a control device 112, which will be described in detail below.
  • Container 104 is used to store volatile substances.
  • the volatile substances can be any type of anesthetic such as desflurane, sevoflurane, and isoflurane, or other volatile substances.
  • the pressurizing device 106 is used to pressurize the volatile substances within the container 104.
  • the pressurizing device 106 is used to introduce pressurized gas into the container 104 to pressurize the volatile substances within the container 104.
  • the pressurizing device 106 can be based on a pump that can introduce external pressurized gas into the container 104.
  • the pressurizing device 106 can be separately disposed from the container 104 or disposed on the container 104, for example, by mounting a pump on the surface of the container 104 and using it to connect the inside and outside of the container 104.
  • the pressurizing device 106 can introduce pressurized gas into the container 104 through a one-way valve, thereby preventing gas backflow and improving safety.
  • the volatile substances are typically completely or partially liquid at room temperature and continuously evaporate into a gaseous state; pressurizing the volatile substances within the container 104 can keep at least a portion of the volatile substances in a liquid state.
  • the supply device 108 is used to extract and output liquid volatile substances from container 104, thereby achieving high-precision output of liquid volatile substances.
  • the supply device 108 includes a valve that can extract and output liquid volatile substances in an open state and stop extraction in a closed state.
  • the valve has a nozzle for spraying the liquid volatile substances.
  • the nozzle can spray short, high-precision amounts of liquid volatile substances in a spray form, thereby achieving high-precision control of the output amount of liquid volatile substances.
  • the liquid volatile substances in the vaporization device 110 are evenly distributed, which is beneficial for the vaporization of the liquid volatile substances to obtain gaseous volatile substances.
  • the vaporization device 110 is used to vaporize a liquid volatile substance to obtain a gaseous volatile substance.
  • the vaporization device 110 has a first input terminal, a second input terminal, and an output terminal.
  • the first input terminal of the vaporization device 110 is used to input a carrier gas, which can be a fresh gas, such as a carrier gas provided by an anesthesia machine.
  • the second input terminal of the vaporization device 110 is used to input the liquid volatile substance output from the supply device 108.
  • the vaporization device 110 is used to vaporize the input liquid volatile substance to obtain a gaseous volatile substance.
  • the gaseous volatile substance is mixed with the carrier gas input to the vaporization device 110, and the mixed gas is output from the output terminal of the vaporization device 110, for example, it can be output to an anesthesia machine.
  • the vaporization device 110 may include a vaporization chamber for vaporizing the liquid volatile substance.
  • the vaporizer can be connected to the anesthesia machine via an input interface 102 and an output interface 104, respectively.
  • the input interface 102 and output interface 104 can be mechanical or pneumatic interfaces, which can be standard carrier gas/fresh gas interfaces for inputting carrier gas provided by the anesthesia machine and outputting a mixture of carrier gas and gaseous volatile substances to the anesthesia machine.
  • connecting to the anesthesia machine via a mechanical or pneumatic interface allows the vaporizer to operate independently of the anesthesia machine, enabling it to connect to any anesthesia machine including a standard interface, receive carrier gas from the anesthesia machine through this standard interface, and deliver carrier gas containing gaseous volatile substances to the anesthesia machine.
  • the vaporizer may also include a sensor for detecting whether the input interface 102 and output interface 104 are correctly connected to the anesthesia machine.
  • the vaporizer may also be an integrated part of the anesthesia machine.
  • the control device 112 is connected to the pressurizing device 106 and the supply device 108 respectively, for controlling the pressurizing device 106 to pressurize the container 104, and controlling the supply device 108 to extract the liquid volatile substance from the container 104.
  • the control device 112 controls the pressurizing device 106 to pressurize the volatile substance within the container 104 such that at least a portion of the volatile substance within the container 104 is in a liquid state.
  • the container 104 may be pressurized to a threshold pressure, which is related to the properties of the volatile substance and may also be related to the configuration of the evaporator, at which at least a portion of the volatile substance is in a liquid state, thereby ensuring that the supply device 108 can extract liquid volatile substance from the container 104.
  • the threshold pressure is the minimum pressure required to keep at least a portion of the volatile substance in the container in a liquid state.
  • the container 104 may also be pressurized to a pressure greater than the threshold pressure.
  • the evaporator further includes a pressure sensor 118, which detects the pressure inside the container 104 and obtains a pressure signal.
  • the control device 112 is also used to determine whether the pressure inside the container 104 is lower than a threshold pressure based on the pressure signal. For example, if the pressure inside the container 104 decreases with the use of volatile substances, and if it decreases below the threshold pressure, the control device 112 controls the pressurizing device 106 to pressurize the container 104, making the pressure inside the container greater than or equal to the threshold pressure.
  • the control device 112 controls the pressurizing device 106 to pressurize the container 104 to a pressure greater than or equal to the preset pressure, for example, maintaining the pressure inside the container 104 at a preset pressure greater than or equal to the threshold pressure.
  • the pressure inside the container 104 can also be maintained within a pressure range, for example, within the pressure interval between a lower threshold pressure and an upper threshold pressure, wherein the upper threshold pressure is greater than the lower threshold pressure, the lower threshold pressure is greater than or equal to the preset pressure, and the preset pressure is greater than or equal to the threshold pressure.
  • the control device 112 can avoid frequently controlling the pressurizing device 106 to pressurize container 104.
  • the preset pressure and pressure interval can also be adjusted as needed, for example, according to different types of volatile substances, or according to the configuration of the evaporator.
  • the control device 112 can also control the pressurizing time of the pressurizing device 106 in pressurizing container 104, or the amount of pressurizing gas input, so that the pressure inside the container is greater than or equal to a threshold pressure.
  • the control device 112 controls the pressurizing device 106 to pressurize container 104, as long as the pressure inside the container is greater than or equal to the threshold pressure, at least a portion of the volatile substance inside the container will remain in a liquid state.
  • the preset pressure can be higher than 1.1 bar, for example, 1.2 bar, or higher than 1.5 bar
  • the pressure interval can be 1.1 to 2.5 bar, 1.1 to 1.5 bar, 1.1 to 1.3 bar, or 1.2 bar to 1.25 bar.
  • control device 112 is further configured to determine whether the pressure inside the container 104 is higher than a preset pressure based on the pressure signal. If it is higher than the preset pressure, the control device 112 controls the pressurizing device 106 to depressurize the container 104. In some embodiments, the control device is further configured to obtain the output amount of the liquid volatile substance from the supply device based on the change in the pressure signal after the supply device outputs the liquid volatile substance. Since the pressure inside the container will change accordingly after the supply device outputs the liquid volatile substance, the output amount of the volatile substance can be calculated based on this pressure change.
  • the control device 112 controls the supply device 108 to output a preset amount of liquid volatile substance from the container 104 to the vaporization device 110.
  • the amount of liquid volatile substance can be determined by a flow detection sensor, or the amount of liquid volatile substance can be controlled by the supply device 108 itself, or the amount of liquid volatile substance can be controlled according to the pressure change in the container.
  • the supply device 108 is a valve
  • the amount of liquid volatile substance output can be controlled by controlling the valve opening size, or the amount of liquid volatile substance output can be controlled by controlling the valve opening frequency and/or number of times.
  • the preset amount of liquid volatile substance can be determined according to the flow rate of the carrier gas, so that after the gaseous volatile substance and the carrier gas are mixed, the concentration of volatile substance in the mixed gas reaches a preset concentration.
  • the evaporator further includes a flow sensor 116, which detects the flow rate of the carrier gas in the input container 104 and obtains a flow signal.
  • the control device 112 is also used to determine the flow rate of the carrier gas based on the flow signal, thereby determining a preset amount of liquid volatiles based on the flow rate of the carrier gas, so that the volatiles in the mixed gas reach a preset concentration.
  • the evaporator further includes a concentration sensor 126, which detects the concentration of volatiles in the mixed gas output by the vaporization device 110 and obtains a concentration signal.
  • the control device 112 is also used to determine whether the concentration of the volatiles reaches a threshold concentration based on the concentration signal.
  • control device 112 controls the supply device 108 to continue supplying liquid volatiles to the vaporization device 110 based on the concentration of the volatiles until the concentration of the volatiles reaches the threshold concentration.
  • control device 112 may also determine the amount of liquid volatile substance required to reach a threshold concentration based on the concentration of the volatile substance, and the supply device 108 may deliver the corresponding amount of liquid volatile substance to the vaporization device 110.
  • the control device 112 may also reduce the amount of liquid volatile substance output to the vaporization device 110 if it is determined that the concentration of the volatile substance exceeds the threshold concentration.
  • the volatile substances in container 104 are pressurized by pressurizing device 106, so that at least a portion of the volatile substances in container 104 are in a liquid state. This allows the liquid volatile substances in container 104 to be extracted and output by supply device 108. Finally, the liquid volatile substances are vaporized by vaporization device 110 to obtain gaseous volatile substances. Because quantitative control of liquid volatile substances achieves higher control precision compared to quantitative control of gaseous volatile substances, and vaporization of liquid volatile substances yields a corresponding amount of gaseous volatile substances, the output of gaseous volatile substances from the evaporator is more precise, meeting the user's high-precision requirements. Furthermore, the liquid volatile substances can be output in the form of a jet to facilitate vaporization into gaseous volatile substances, ensuring that vaporization yields a corresponding amount of gaseous volatile substances.
  • the evaporator further includes a heating device 122 for heating the vaporization device 110.
  • the control device 112 is also used to control the heating device 122 to heat the vaporization device 110, causing the liquid volatile substance to vaporize.
  • a certain temperature can accelerate the vaporization of the liquid volatile substance, and reaching a threshold temperature ensures that the liquid volatile substance will definitely vaporize.
  • This threshold temperature is related to the properties of the volatile substance and may also be related to the configuration of the evaporator.
  • the heating device 122 can be a heater, and one or more heaters can be configured.
  • the heater can be configured inside the vaporization device 110 or on the surface of the vaporization device 110.
  • the threshold temperature may refer to the temperature of the inner surface of the vaporization device 110, thereby vaporizing the contacted liquid volatiles based on the inner surface of the vaporization device 110. In some embodiments, the threshold temperature may also refer to the temperature within the vaporization device 110, thereby allowing direct vaporization of the liquid volatiles within the vaporization device 110.
  • the evaporator further includes a temperature sensor for detecting the temperature of the vaporization device 110 and obtaining a temperature signal.
  • the temperature sensor can detect either the inner surface temperature of the vaporization device 110 or the temperature inside the vaporization device 110.
  • the control device 112 is also used to determine, based on the temperature signal, whether the temperature of the vaporization device 110 is below a threshold temperature. For example, if the temperature of the vaporization device 110 decreases as the volatile substance vaporizes, and if it falls below the threshold temperature, the control device 112 controls the heating device 122 to heat the vaporization device 110, ensuring that the temperature of the vaporization device is greater than or equal to the threshold temperature.
  • the control device 112 controls the heating device 122 to heat the vaporization device 110 to a temperature greater than or equal to the preset temperature, which is greater than or equal to the threshold temperature, for example, maintaining the temperature of the vaporization device 110 at the preset temperature.
  • the temperature of the vaporization device 110 can be maintained within a temperature range, such as the temperature interval between a lower threshold temperature and an upper threshold temperature, where the upper threshold temperature is greater than the lower threshold temperature, the lower threshold temperature is greater than or equal to the threshold temperature, and the preset temperature is greater than or equal to the threshold temperature.
  • the control device 112 can avoid frequently controlling the heating device 122 to pressurize the vaporization device 110.
  • the preset temperature and temperature interval can also be adjusted as needed, for example, according to different types of volatile substances, or according to the configuration of the evaporator.
  • the control device 112 can also control the heating time of the heating device 122 on the vaporization device 110, thereby ensuring that the temperature of the heating device 122 is greater than or equal to the threshold temperature.
  • the control device 112 controls the heating device 122 to heat the vaporization device 110, as long as the temperature of the vaporization device 110 is greater than or equal to the threshold temperature, the liquid volatiles in the vaporization device 110 will be vaporized.
  • the evaporator further includes a mixing chamber 124.
  • the mixing chamber 124 has an input end and an output end, wherein the input end of the mixing chamber 124 is connected to the output end of the vaporization device 110 for inputting the mixed gas within the vaporization device 110, allowing the mixed gas to be remixed, and the remixed gas is output from the output end of the mixing chamber 124.
  • the vaporization device 110 since the vaporization device 110 is used not only to vaporize liquid volatiles to obtain gaseous volatiles, but also to mix the gaseous volatiles with a carrier gas, it may lead to uneven mixing between the gaseous volatiles and the carrier gas in the vaporization device 110.
  • the concentration sensor 126 may also detect the concentration of volatiles in the remixed gas output from the mixing chamber 124.
  • the vaporization device 110 is heated by the heating device 122, thereby ensuring that all the liquid volatiles can be vaporized in the vaporization device 110, so that a preset amount of liquid volatiles is vaporized to obtain a corresponding amount of gaseous volatiles. Furthermore, the gaseous volatiles can be initially mixed with the carrier gas in the vaporization device 110, and then mixed again through the mixing chamber 124, thereby ensuring that the gaseous volatiles and the carrier gas are mixed uniformly.
  • the evaporator further includes a first controllable valve 130.
  • a first end of the first controllable valve 130 is used to input a carrier gas, and a second end of the first controllable valve 130 is connected to a first input end of the vaporization device 110.
  • the first controllable valve 130 is used to control whether its second end outputs carrier gas to the first input end of the vaporization device 110.
  • the first controllable valve 130 can be controlled to connect its first end to its second end, thereby controlling the output of carrier gas to the first input end of the vaporization device 110; conversely, controlling its first end to disconnect from its second end will stop the output of carrier gas to the first input end of the vaporization device 110.
  • the first controllable valve 130 controls whether the carrier gas mixes with a gaseous volatile substance.
  • the first controllable valve 130 may also have a third end.
  • the first controllable valve 130 can control any connection or disconnection between its first end, second end and third end.
  • the first controllable valve 130 may be a three-way valve.
  • the evaporator further includes a second controllable valve 132.
  • the first end of the second controllable valve 132 is used to input the gas mixed by the vaporization device 110 or the gas remixed in the mixing chamber 124.
  • the second end of the second controllable valve 132 is used to output the mixed gas or the remixed gas, for example, through the output interface 104 to an anesthesia machine.
  • the second controllable valve 132 can be controlled to connect its first end to its second end, thereby controlling the output of the mixed gas or the remixed gas; conversely, controlling its first end to disconnect from its second end stops the output of the mixed gas or the remixed gas.
  • the second controllable valve 132 controls whether the mixed gas or the remixed gas is output.
  • the second controllable valve 132 may also have a third end.
  • the second controllable valve 132 can control any connection or disconnection between its first end, second end and third end.
  • the second controllable valve 132 may be a three-way valve.
  • the evaporator also includes a safety control device 134, which is used to monitor the operating status of the evaporator.
  • the safety control device 134 when the safety control device 134 determines that the evaporator's operating state is abnormal, the safety control device 134 can generate an abnormal alarm signal. In some embodiments, when the safety control device 134 determines that the evaporator's operating state is abnormal, the safety control device 134 can also control the second end of the first controllable valve 130 to stop outputting carrier gas to the first input end of the vaporization device 110, thereby preventing the carrier gas from mixing with gaseous volatile substances to ensure safety.
  • the safety control device 134 when the safety control device 134 determines that the evaporator's operating state is abnormal, the safety control device 134 can also control the second end of the second controllable valve 132 to stop outputting the mixed gas or the remixed gas, thereby preventing the output of the mixed gas or the remixed gas to ensure safety.
  • the safety control device 134 can be a protection system that monitors the evaporator to ensure it remains in a safe state even when an abnormal operating condition is detected. For example, an abnormal operating condition could be due to a significantly higher concentration of the volatile substance being transported than a preset concentration, insufficient remaining volatile substance, or abnormal pressure within container 104.
  • the safety control device 134 can also handle alarms and error codes from the evaporator and monitor the status of the control device 112.
  • the control device 112 and the safety control device 134 can operate independently as separate controllers, ensuring that a single fault does not simultaneously inhibit the operation of both devices, thus guaranteeing the safe operation of the evaporator.
  • the evaporator can be powered by general AC power and has a power inlet that can be connected to a general AC power outlet via an AC/DC adapter.
  • the evaporator also includes a backup battery for use in case of power failure; if the external power supply fails, the evaporator can automatically switch to the internal backup battery.
  • the first controllable valve 130 can be controlled by the safety control device 134 to prevent the carrier gas from mixing with gaseous volatile substances.
  • the second controllable valve 132 can also be controlled by the safety control device 134 to prevent the output of mixed gas or remixed gas, thereby ensuring the safe operation of the evaporator when it is malfunctioning and improving the safety performance of the evaporator.
  • the safety control device 134 and the control device 112 may be independent of the anesthesia machine, thereby enabling the vaporizer to output gaseous volatile substances without relying on the anesthesia machine.
  • the evaporator further includes an adjustment setting device 120, which is used at least to set the concentration of volatile substances in the mixed gas or the remixed gas.
  • a control device 112 is connected to the adjustment setting device 120 to acquire the set concentration of the volatile substances and determine a preset amount of liquid volatile substances based on this concentration and the flow rate of the carrier gas, thereby ensuring that the concentration of volatile substances in the mixed gas or the remixed gas reaches the set concentration.
  • the adjustment setting device 120 can be implemented using physical buttons, knobs, or a touchscreen.
  • the evaporator also includes a level sensor for detecting the remaining amount of liquid volatiles in container 104 and obtaining a level signal.
  • the control device 112 is also used to determine whether the amount of liquid volatiles in container 104 is below a threshold based on the level signal; if it is below the threshold, a related alarm signal is generated.
  • the evaporator can also be connected to a volatiles supply device via a feeding interface 140, so that when the amount of liquid volatiles in container 104 is below the threshold, the control device 112 can also control the volatiles supply device to replenish the volatiles in container 104.
  • the evaporator also includes an indicating device.
  • the indicating device is used to indicate information about the evaporator. For example, it may indicate the current consumption of liquid volatiles in container 104, the remaining amount of liquid volatiles in container 104, the total consumption of liquid volatiles, or information related to the operating status of the evaporator. This information may include detection information from various sensors, whether the operating status is abnormal, and other various information.
  • the indicating device may be an auditory and visual based device, such as a display screen, a light-emitting device, a buzzer, a speaker, or any other suitable indicating device.
  • the evaporator includes a container 104, a pressurizing device 106, a supply device 108, and a vaporization device 110, which will be described in detail below.
  • Container 104 is used to store volatile substances.
  • the pressurizing device 106 is used to pressurize the volatile substance in the container 104, so that the volatile substance is at least partially liquid.
  • the pressurizing device 106 can be the pressurizing device 106 in the above embodiments, and will not be described again here.
  • the supply device 108 is used to extract and output a preset amount of volatile liquid substances from the container 104.
  • the supply device 108 can be the same as the supply device 108 in the above embodiments, and will not be described again here.
  • the vaporization device 110 is used to vaporize the liquid volatile substance output from the supply device 108 to obtain a gaseous volatile substance for output.
  • the vaporization device 110 has an input end and an output end, wherein the input end of the vaporization device 110 is used to input the liquid volatile substance output from the supply device 108, and the output end of the vaporization device 110 is used to output the gaseous volatile substance.
  • the evaporator extracts a preset amount of liquid volatile substances, vaporizes the liquid volatile substances, and outputs a corresponding amount of gaseous volatile substances, thereby achieving high-precision control of the output amount of gaseous volatile substances.
  • the evaporator further includes an atomizing device for atomizing the liquid volatile substance output from the supply device 108 and then outputting it to the vaporization device 110.
  • the atomizing device atomizes the liquid volatile substance, allowing the atomized liquid volatile substance to be better vaporized in the vaporization device 110.
  • the evaporator further includes a heating device for heating the vaporization device 110 to vaporize the liquid volatile substance.
  • the heating device can be the one described in the above embodiments, and will not be repeated here.
  • Some embodiments provide a gas output method that can be applied to the evaporator described above.
  • the gas output method includes the following steps:
  • Step 200 Pressurize the volatile substances in the evaporator so that at least part of the volatile substances are in a liquid state.
  • Step 210 Extract and output a preset amount of volatile liquid substances from the evaporator using a supply device.
  • Step 220 The liquid volatile substance output from the supply device is vaporized by a vaporization device to obtain a gaseous volatile substance for output.
  • the supply device is used to spray out liquid volatile articles; or, the liquid volatile articles output by the supply device are atomized by an atomizing device and then vaporized by a vaporizing device to obtain gaseous volatile articles.
  • Some embodiments provide a computer-readable storage medium storing a program that can be executed by a processor to implement the gas output method described above.
  • the program can be stored in a computer-readable storage medium, which may include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to achieve the above functions.
  • the program can be stored in the memory of a device, and when the program in the memory is executed by the processor, all or part of the above functions can be achieved.
  • the program can also be stored in a server, another computer, disk, optical disk, flash drive, or portable hard drive, etc., and can be downloaded or copied to the memory of a local device, or the system of the local device can be updated.
  • the program in the memory is executed by the processor, all or part of the functions in the above embodiments can be achieved.

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  • Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Pulmonology (AREA)
  • Biomedical Technology (AREA)
  • Emergency Medicine (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

La présente demande se rapporte au domaine de la technologie des réservoirs d'évaporation, et concerne en particulier un réservoir d'évaporation, un procédé de sortie de gaz et un support de stockage. Le réservoir d'évaporation comprend : un récipient, un dispositif de mise sous pression, un dispositif d'alimentation, un dispositif de vaporisation et un dispositif de commande connecté séparément au dispositif de mise sous pression et au dispositif d'alimentation. Le dispositif de commande est conçu pour commander le dispositif de mise sous pression pour mettre sous pression le récipient, de telle sorte qu'au moins une partie d'une substance volatile dans le récipient est dans un état liquide ; et pour commander le dispositif d'alimentation afin de délivrer une quantité prédéfinie de la substance volatile liquide dans le récipient dans le dispositif de vaporisation. Le dispositif de vaporisation est conçu pour vaporiser la substance volatile liquide afin de donner une substance volatile gazeuse, de telle sorte que la substance volatile gazeuse et un gaz vecteur sont mélangés dans le dispositif de vaporisation, et le mélange gazeux est délivré par un orifice de sortie du dispositif de vaporisation. Au moyen de la commande de la quantité de sortie de la substance volatile liquide et de la vaporisation de la substance volatile liquide pour donner la substance volatile gazeuse, la présente invention permet d'obtenir une commande de précision supérieure sur la substance volatile gazeuse, répondant ainsi aux exigences de haute précision de l'utilisateur.
PCT/CN2024/105782 2024-05-08 2024-07-16 Réservoir d'évaporation, procédé de sortie de gaz et support de stockage Pending WO2025231990A1 (fr)

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CN202410578804.3A CN118340975A (zh) 2024-05-08 2024-05-08 一种蒸发罐、气体输出方法及存储介质

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US20150306339A1 (en) * 2007-06-13 2015-10-29 Maquet Critical Care Ab Safety system for a breathing apparatus for delivering an anesthetic agent
CN106964045A (zh) * 2017-02-21 2017-07-21 中国人民解放军第三军医大学第附属医院 气体麻醉系统
CN217886719U (zh) * 2020-12-31 2022-11-25 河北谊安奥美医疗设备有限公司 一种麻醉蒸发器
CN115518251A (zh) * 2021-06-24 2022-12-27 德尔格制造股份两合公司 具有馈入单元和麻醉剂罐的麻醉剂分配器及使用麻醉剂分配器的方法
CN117653848A (zh) * 2023-12-25 2024-03-08 北京谊安和顺科技有限公司 一种高压定量药物输出装置及输出方法
CN117695490A (zh) * 2024-01-05 2024-03-15 欧莱特医疗科技(无锡)股份有限公司 一种临床用麻醉气体浓度控制装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150306339A1 (en) * 2007-06-13 2015-10-29 Maquet Critical Care Ab Safety system for a breathing apparatus for delivering an anesthetic agent
CN102824679A (zh) * 2011-06-16 2012-12-19 通用电气公司 麻醉汽化器系统和方法
CN106964045A (zh) * 2017-02-21 2017-07-21 中国人民解放军第三军医大学第附属医院 气体麻醉系统
CN217886719U (zh) * 2020-12-31 2022-11-25 河北谊安奥美医疗设备有限公司 一种麻醉蒸发器
CN115518251A (zh) * 2021-06-24 2022-12-27 德尔格制造股份两合公司 具有馈入单元和麻醉剂罐的麻醉剂分配器及使用麻醉剂分配器的方法
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