WO2012089088A1 - Method, device and respirator for controlling flow - Google Patents
Method, device and respirator for controlling flow Download PDFInfo
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- WO2012089088A1 WO2012089088A1 PCT/CN2011/084689 CN2011084689W WO2012089088A1 WO 2012089088 A1 WO2012089088 A1 WO 2012089088A1 CN 2011084689 W CN2011084689 W CN 2011084689W WO 2012089088 A1 WO2012089088 A1 WO 2012089088A1
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- patient
- gas
- flow
- release device
- breath
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- 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
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
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- 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
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0015—Accessories therefor, e.g. sensors, vibrators, negative pressure inhalation detectors
Definitions
- the present invention relates to the field of medical devices, and in particular to a flow control method, device, and ventilator.
- BACKGROUND OF THE INVENTION Ventilator generally has two trigger modes: pressure trigger and flow rate trigger.
- the flow rate triggering method relies on flow sensitivity to trigger the patient's command or spontaneous breathing. At present, the clinical use of multiple flow rate triggering methods.
- the ventilator flow rate can be triggered in a variety of ways.
- the trigger sensitivity is triggered according to the percentage, and some is triggered according to the specific flow rate value, but basically the basic flow, the size of the basic flow and the time given by the basic flow are given.
- the ventilator can give the gas, and the amount of gas given is exactly what the patient needs, but in the process, there will be an increase in the breathing device due to the addition of related devices, such as two-way.
- the flow sensor and the pipeline cause the dead space to become larger.
- the gas in the dead space means that after the patient completes one breath, before the next breath, some remaining in the breathing circuit close to the patient will not be timely. Exhaled gas.
- the gas in the dead space is left in the breathing circuit of the related art ventilator, which causes the patient to inhale pure fresh air at the beginning of breathing, and no effective solution has been proposed yet.
- the main object of the present invention is to provide a flow control method, device and ventilator to solve the above problems.
- a flow control method comprising: a bidirectional flow controller triggering delivery of a gas to a patient according to a detection condition for a patient to breathe through the breathing tube for the first time
- the release device is opened to release the gas in the dead space in the breathing circuit and the base flow is delivered to the release device; the bi-directional flow controller again triggers delivery of gas to the patient for the patient to perform the second Breathing.
- the step of the ventilator opening the release device to release the gas in the dead space in the breathing circuit and outputting the basal flow to the release device comprises: ventilating the vent of the release device to release the gas in the dead space, releasing The device is disposed between the Y-shaped port of the breathing circuit and the patient; the ventilator delivers a base flow to the inspiratory branch in the breathing circuit, the base flow flowing to the release device via the inspiratory branch, such that the release device releases the base flow, wherein The flow rate of the base flow is the sum of the trigger sensitivity and the predetermined flow rate value; the release device is closed, and the base flow flows to the expiratory branch in the breathing circuit. Further, the controller controls the air vent of the release device to be turned off within a first predetermined time.
- the method further comprises: determining whether the first breath is over, when the first breath is at the call At the end of the breath, the first breath is over and the release device is opened, otherwise, the state of the first breath continues to be detected until the first breath is detected to be at the end of expiration.
- the method further comprises: determining whether to trigger the delivery of the gas to the patient according to the detection condition, when the patient sucks When the flow rate of the gas flow reaches the trigger sensitivity, gas is initially delivered to the patient, otherwise, the gas is forcibly triggered to be delivered to the patient for a second predetermined time.
- a flow control device comprising: a bidirectional flow sensor disposed between a Y-type interface of a breathing circuit and a patient, triggering a patient according to a detection condition The gas is delivered for the patient to breathe through the breathing circuit; the release device is coupled to the bi-directional flow sensor for opening the air vent on the release device to release the gas in the dead space in the breathing circuit at the end of the breath; And connecting to the bidirectional flow sensor, controlling the ventilator to deliver a basic flow to the inspiratory branch in the breathing circuit, the basic flow flowing to the release device via the inspiratory branch, such that the release device releases the base flow.
- the device further includes: a first determining module, configured to determine whether the first breath is finished, when the first breath is at the end of expiration, the first breath ends, and the release device is started to be turned on, otherwise, the first test is continued The state of breathing until the first breath is detected to be at the end of expiration.
- the device further includes: a second determining module, configured to determine whether to trigger the delivery of the gas to the patient according to the detection condition, and start to deliver the gas to the patient when the flow rate of the inspiratory flow of the patient reaches the trigger sensitivity, otherwise, in the second Forced triggering of delivery of gas to the patient within a predetermined time.
- the device further includes: an inspiratory flow sensor disposed in the inspiratory branch in the breathing circuit to detect a flow rate of the gas delivered to the patient; an expiratory flow sensor, an expiratory branch disposed in the respiratory circuit The flow rate of the exhaled gas of the patient is detected.
- a ventilator comprising: any one of the above flow control devices.
- the bidirectional flow controller is used to trigger the delivery of gas to the patient according to the detection condition for the patient to breathe through the breathing tube for the first time; at the end of the first breath, the release device is opened to release the breathing circuit.
- the gas in the dead space and delivers the base flow to the release device; the bi-directional flow controller again triggers the delivery of gas to the patient for the patient to perform a second breath, which resolves the residual breathing in the breathing circuit of the related art ventilator
- the gas in the cavity causes the patient to inhale the pure fresh air at the beginning of breathing, so that the patient can always breathe fresh gas.
- the fresh gas can be sucked, reducing the patient. The effect of exhalation.
- FIG. 1 is a schematic structural view of a flow control device according to an embodiment of the present invention
- FIG. 2 is a flow chart of a flow control method according to an embodiment of the present invention
- FIG. 3 is a flow control method preferred according to an embodiment of the present invention. Flow chart. detailed description It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
- the device may include: a bidirectional flow sensor 1 disposed between the Y-shaped port of the respiratory line and the patient, and triggering delivery of gas to the patient according to the detection condition for the patient to breathe through the breathing circuit;
- the release device 2 is connected to the bidirectional flow sensor 1 for opening the air vent on the release device 2 to release the gas in the dead space in the breathing circuit at the end of the breath;
- the controller 3 is connected to the bidirectional flow sensor 1
- the ventilator is controlled to deliver a base flow to the suction branch in the breathing circuit, the base flow flowing through the suction branch to the release device 2 such that the release device 2 releases the base flow.
- the above embodiment of the present invention realizes the installation of a tiny release device 2 in the vicinity of the bidirectional flow sensor 1, which uses the release device 2 to release the gas in the dead space during the period between the two breaths of the patient, while the ventilator sucks
- the gas branch transports the base to the release device 2 such that the release device completely releases the gas in the dead space while releasing a portion of the base flow. This process allows the patient to inhale the next fresh gas, which reduces the patient's breathing and improves the performance of the respirator.
- the device can control the air hole of the release device 2 to be turned off by the controller 3 for a first predetermined time, that is, the time when the setting is reached at a predetermined time, the ventilator will turn off the release device 2 to prevent the release device 2 from being always It is open or open for too long to prevent wastage of gas from the breathing circuit.
- the device of the present invention may further include: a first determining module, configured to determine whether the first breath is finished, when the first breath is at the end of expiration, the first breath ends, and the release device is started to be turned on, otherwise, the first test is continued. The state of breathing until the first breath is detected to be at the end of expiration.
- the process of controlling the release of the basal flow in this embodiment is after the patient completes one breath and before the next breath, making The rigorous completion of the release of the basal flow in the breathing circuit reduces the gas in the dead space.
- the device of the present invention may further include: a second determining module, configured to determine whether to trigger the delivery of the gas to the patient according to the detection condition, and start to deliver the gas to the patient when the flow rate of the inspiratory flow of the patient reaches the trigger sensitivity, otherwise, The second predetermined time is forced to trigger the delivery of gas to the patient.
- the control device transmits the gas to the patient in time while ensuring the reduction of the amount of the cavity, so as to prevent the gas received by the patient from being interrupted.
- the apparatus may further include: an inspiratory flow sensor 4 disposed in the inspiratory branch in the breathing circuit to detect a flow rate of the gas delivered to the patient; the exhalation flow sensor 5 is disposed at In the expiratory limb in the breathing circuit, the flow of exhaled gas from the patient is detected.
- the flow control device of the present invention can set the trigger sensitivity to 3LPM.
- Step S202 The bidirectional flow controller 2 of FIG. 1 implements a bidirectional flow controller to trigger according to a detection condition. Gas is delivered to the patient for the patient to breathe for the first time through the breathing circuit. Step S204, by the controller 3 in Fig.
- the release device is opened to release the gas in the dead space in the breathing circuit, and the base flow is delivered to the release device.
- the bidirectional flow controller 2 of FIG. 1 realizes that the bidirectional flow controller triggers the gas to be delivered to the patient again for the patient to perform the second breath.
- the above embodiment of the present invention realizes the installation of a tiny release device 2 in the vicinity of the bidirectional flow sensor 1, which uses the release device 2 to release the gas in the dead space during the period between the two breaths of the patient, while the ventilator sucks
- the gas branch transports the base to the release device 2 such that the release device completely releases the gas in the dead space while releasing a portion of the base flow.
- the inspiratory flow sensor 1 can be installed in the inhalation passage to monitor the inspiratory flow
- the expiratory flow sensor 2 is installed in the expiratory passage to monitor the expiratory flow
- the bidirectional flow sensor 3 closest to the patient monitors the patient in real time.
- a small release device is installed in the vicinity of the bidirectional flow sensor 3.
- the time of starting the basic base flow may take the minimum expiratory time and the maximum value after the end of expiration, generally selecting the time value of the end of expiration, and the end of expiration is determined by the airway.
- the pressure and expiratory flow rate are comprehensively determined.
- the step of the ventilator opening the release device 2 to release the gas in the dead space in the breathing circuit and outputting the basal flow to the release device 2 includes: the ventilator opens the vent of the release device 2 to release the dead The gas in the chamber, the release device 2 is disposed between the Y-shaped port of the breathing circuit and the patient; the ventilator delivers a base flow to the inspiratory branch in the breathing circuit, and the base flow flows to the release device 2 via the inspiratory branch, The release device 2 is caused to release the base flow, wherein the flow rate of the base flow is the sum of the trigger sensitivity and the predetermined flow rate value; the release device is closed, and the base flow flows to the expiratory branch in the breathing circuit.
- This embodiment achieves the process of releasing the amount of cavity of the device 2 while utilizing the base flow during the release process so that fresh air is present in the breathing circuit near one end of the patient.
- the device can be controlled by the controller 3 to control the air vent of the release device 2 to be turned off within a first predetermined time, that is, to achieve a predetermined time to open and close the release device 2 to prevent the release device 2 from being always open or open. The condition is too long to prevent wasting gas from the breathing circuit.
- the method before the ventilator opens the release device to release the gas in the dead space in the breathing circuit and outputs the basal flow to the release device, the method further includes: determining whether the first breath is over, when the first When the second breath is at the end of expiration, the first breath is over, and the release device is started to open. Otherwise, the state of the first breath is continuously detected until the first breath is detected to be in the state of end-expiration.
- the process of controlling the release of the basal flow in this embodiment is such that after the patient completes one breath, before the next breath, the basal flow in the breathing circuit is released more tightly, reducing the gas in the dead space.
- the method further includes: determining whether to trigger the delivery of the gas to the patient according to the detection condition, When the flow rate of the inspiratory flow of the patient reaches the trigger sensitivity, gas is initially delivered to the patient, otherwise, the gas is forcibly triggered to be delivered to the patient for a second predetermined time. In this embodiment, whether the inspiratory flow rate of the patient exceeds the trigger sensitivity as a detection condition, the control device transmits the gas to the patient in time while ensuring the reduction of the amount of the cavity, so as to prevent the gas received by the patient from being interrupted.
- the above solution of the present invention uses a high-precision flow sensor 3 to match the basic flow associated with the trigger sensitivity, and critically increases the release device 2 connected to the flow sensor near the patient end, while achieving the sensitivity of the flow rate triggering. Reduce the gas in the dead space.
- 3 is a flow chart of a preferred flow control method in accordance with an embodiment of the present invention. As shown in FIG. 3, when the patient starts using the control method of the present invention, it first detects whether the transmission gas is triggered.
- the tiny release device When the gas in the airway is fresh gas, the tiny release device is turned off, and the flow sensor 3 determines whether the patient is triggering. If the trigger reaches the trigger sensitivity (the trigger sensitivity is continuously adjustable from 0 to 20 LPM), the triggering is performed. Since the flow sensor 3 is closest to the patient, it is first perceived whether the patient is triggered or not, and the response time of the trigger is increased. By adding a small inhalation module, it is ensured that the gas in the airway is fresh gas before the flow rate is triggered, and the patient is prevented from proceeding. Repeat inhalation to improve the patient's ventilation environment.
- the trigger sensitivity the trigger sensitivity is continuously adjustable from 0 to 20 LPM
- the detection condition at this time is the detection condition of the flow rate trigger, and the system can start to use the pressure trigger to determine whether to trigger the transmission gas. If the pressure triggers successfully, It also starts to trigger the transmission of fresh gas to the patient, or the system can also use the forced trigger to transmit fresh gas, that is, to determine that the gas has not been delivered to the patient within the specified time, the system automatically starts transmitting, providing the patient with the required gas, preventing The patient suffocated.
- the present invention can also provide a ventilator which can be any of the above flow control devices.
- the flow rate trigger achieved by the present scheme can reduce the time of the gas in the pipeline, and there is always fresh gas in the pipeline of the patient using the ventilator. When the patient has an inhalation action, it can absorb fresh gas and reduce the patient's breathing work, which has a good clinical experiment effect.
- modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module.
- the invention is not limited to any specific combination of hardware and software.
- the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
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Abstract
Description
流量控制方法、 装置及呼吸机 Flow control method, device and ventilator
技术领域 本发明涉及医疗器械领域， 具体而言， 涉及一种流量控制方法、 装置及呼 吸机。 背景技术 呼吸机一般有两种触发方式： 压力触发和流速触发。 流速触发方式是依靠 流量灵敏度来实现病人对指令或自主呼吸的触发。 目前临床多釆用流速触发方 式。 呼吸机流速触发实现的方式多种多样， 触发灵敏度有的是根据百分比来进 行触发， 有的是根据具体的流速值进行触发的， 但是基本都需要给出基础流， 基础流的大小及基础流给出的时间会影响流速触发的控制精度， 基础流的大小 及基础流给出的时间不恰当， 会引起误触发或者触发困难。 目前， 多数呼吸机 的给出的基础流都是固定不变或者分档位进行设置。 为了提高流速触发灵敏度 和流速响应时间，有的呼吸机引入了通过横膈电活动控制的神经调节辅助通气， 但是由于操作复杂， 因而没有在临床上进行广泛应用。 在临床使用中， 呼吸机在进行流速触发操作时候， 经常遇到的问题是误触 发和触发困难， 有的时候是监测到触发后， 机器给出触发通气有一定的延迟， 现有技术可以实现患者一有吸气触发努力， 呼吸机就能给出气体， 并且给出的 气体的量正是患者需要的量， 但在该过程中， 呼吸管路中会存在由于增加了相 关装置， 如双向流量传感器和管路导致死腔变大， 死腔中的气体是指患者完成 一次呼吸后， 在下次呼吸之前， 在接近患者的呼吸管路中会残存部分未及时排 除的呼出气体。 目前针对相关技术的呼吸机的呼吸管路中会残留死腔中的气体， 导致患者 在刚开始呼吸时无法吸入纯净的新鲜空气的问题， 目前尚未提出有效的解决方 案。 发明内容 针对相关技术的呼吸机的呼吸管路中会残留死腔中的气体， 导致患者在刚 开始呼吸时无法吸入纯净的新鲜空气的问题， 目前尚未提出有效的问题而提出 本发明， 为此， 本发明的主要目的在于提供一种流量控制方法、 装置及呼吸机， 以解决上述问题。 为了实现上述目的， 根据本发明的一个方面， 提供了一种流量控制方法， 该方法包括： 双向流量控制器根据检测条件来触发向患者输送气体， 以供患者 通过呼吸管路进行第一次呼吸； 在第一次呼吸结束时， 打开释放装置以释放呼 吸管路中的死腔中的气体， 并输送基础流至释放装置； 双向流量控制器再次触 发向患者输送气体， 以供患者进行第二次呼吸。 进一步地， 在呼吸机打开释放装置以释放呼吸管路中的死腔中的气体， 并 输出基础流至释放装置的步骤中包括： 呼吸机打开释放装置的气孔来释放死腔 中的气体， 释放装置设置在 呼吸管路的 Y型接口和患者之间； 呼吸机向呼吸 管路中的吸气支路输送基础流， 基础流经由吸气支路流向释放装置， 使得释放 装置释放基础流， 其中， 基础流的流速值为触发灵敏度与预定流速值之和； 关 闭释放装置， 基础流流向呼吸管路中的呼气支路。 进一步地， 控制器控制释放装置的气孔在第一预定时间内关闭。 进一步地， 在呼吸机打开释放装置以释放呼吸管路中的死腔中的气体， 并 输出基础流至释放装置之前， 方法还包括： 判断第一次呼吸是否结束， 当第一 次呼吸处于呼气末时， 第一次呼吸结束， 开始打开释放装置， 否则， 继续检测 第一呼吸的状态， 直到检测到第一次呼吸处于呼气末的状态。 进一步地， 在呼吸机打开释放装置以释放呼吸管路中的死腔中的气体， 并 输出基础流至释放装置之后， 方法还包括： 根据检测条件判断是否触发向患者 输送气体， 当患者的吸气流量的流量值达到触发灵敏度时， 开始向患者输送气 体， 否则， 在第二预定时间内强制触发向患者输送气体。 为了实现上述目的， 根据本发明的另一方面， 提供了一种流量控制装置， 该装置包括： 双向流量传感器， 设置在呼吸管路的 Y型接口和患者之间， 根据 检测条件来触发向患者输送气体， 以供患者通过呼吸管路进行呼吸； 释放装置， 与双向流量传感器连接， 用于在呼吸结束时， 释放装置打开其上的气孔以释放 呼吸管路中的死腔中的气体； 控制器， 与双向流量传感器连接， 控制呼吸机向 呼吸管路中的吸气支路输送基础流， 基础流经由吸气支路流向释放装置， 使得 释放装置释放基础流。 进一步地， 装置还包括： 第一判断模块， 用于判断第一次呼吸是否结束， 当第一次呼吸处于呼气末时， 第一次呼吸结束， 开始打开释放装置， 否则， 继 续检测第一呼吸的状态， 直到检测到第一次呼吸处于呼气末的状态。 进一步地， 装置还包括： 第二判断模块， 用于根据检测条件判断是否触发 向患者输送气体， 当患者的吸气流量的流量值达到触发灵敏度时， 开始向患者 输送气体， 否则， 在第二预定时间内强制触发向患者输送气体。 进一步地， 装置还包括： 吸气流量传感器， 设置在呼吸管路中的吸气支路 中， 检测向患者输送的气体的流量； 呼气流量传感器， 设置在呼吸管路中的呼 气支路中， 检测患者呼出气体的流量。 为了实现上述目的， 根据本发明的又一方面， 提供了一种呼吸机， 该呼吸 机包括： 上述任意一种流量控制装置。 通过本发明， 釆用双向流量控制器根据检测条件来触发向患者输送气体， 以供患者通过呼吸管路进行第一次呼吸； 在第一次呼吸结束时， 打开释放装置 以释放呼吸管路中的死腔中的气体， 并输送基础流至释放装置； 双向流量控制 器再次触发向患者输送气体， 以供患者进行第二次呼吸， 解决了相关技术的呼 吸机的呼吸管路中会残留死腔中的气体， 导致患者在刚开始呼吸时无法吸入纯 净的新鲜空气的问题， 进而实现患者可以始终呼吸到新鲜气体， 当患者有吸气 动作时， 就可以吸到新鲜气体没， 减少了患者的呼气功的效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分， 本发明的示意性实施例及其说明用于解释本发明， 并不构成对本发明的不当限 定。 在附图中： 图 1是根据本发明实施例的流量控制装置的结构示意图； 图 2是根据本发明实施例的流量控制方法的流程图； 图 3是根据本发明实施例优选的流量控制方法的流程图。 具体实施方式 需要说明的是， 在不冲突的情况下， 本申请中的实施例及实施例中的特征 可以相互组合。 下面将参考附图并结合实施例来详细说明本发明。 图 1是才艮据本发明实施例的流量控制装置的结构示意图。 如图 1所示， 该 装置可以包括： 双向流量传感器 1 , 设置在呼吸管路的 Y型接口和患者之间， 根据检测条件来触发向患者输送气体， 以供患者通过呼吸管路进行呼吸； 释放 装置 2, 与双向流量传感器 1连接， 用于在呼吸结束时， 释放装置 2打开其上 的气孔以释放呼吸管路中的死腔中的气体； 控制器 3 , 与双向流量传感器 1 连 接， 控制呼吸机向呼吸管路中的吸气支路输送基础流， 基础流经由吸气支路流 向释放装置 2 , 使得释放装置 2释放基础流。 本发明上述实施例实现在双向流量传感器 1 附近安装一个微小的释放装置 2, 装置在患者的两次呼吸之间的时段内使用该释放装置 2 来释放死腔中的气 体， 同时呼吸机向吸气支路输送基础流至释放装置 2 , 使得释放装置在完全释 放完死腔中的气体， 同时释放部分基础流。 该过程使得患者下次吸入的气体是 纯净的新鲜气体， 减少了患者的呼吸功， 提高了呼吸器的性能。 优选的， 装置可以通过控制器 3控制释放装置 2的气孔在第一预定时间内 关闭， 即实现设定在预定的时间到达的时刻， 呼吸机将关闭释放装置 2 , 以防 止该释放装置 2始终处于打开状态或者打开状态过长， 防止浪费呼吸管路中传 输来的气体。 本发明装置还可以包括： 第一判断模块， 用于判断第一次呼吸是否结束， 当第一次呼吸处于呼气末时， 第一次呼吸结束， 开始打开释放装置， 否则， 继 续检测第一呼吸的状态， 直到检测到第一次呼吸处于呼气末的状态。 该实施例 控制释放基础流的过程处于患者完成一次呼吸之后， 下一次呼吸之前， 使得更 加严密的完成释放呼吸管路中的基础流， 减少了死腔中的气体。 本发明上述装置中还可以包括： 第二判断模块， 用于根据检测条件判断是 否触发向患者输送气体， 当患者的吸气流量的流量值达到触发灵敏度时， 开始 向患者输送气体， 否则， 在第二预定时间内强制触发向患者输送气体。 该实施 例将患者的吸气流量是否超过触发灵敏度作为检测条件， 来控制装置在保证减 少空腔量的同时， 及时向患者传输气体， 以防患者接收到的气体断流。 本发明的上述实施例中， 该装置还可以包括： 吸气流量传感器 4 ,设置在呼 吸管路中的吸气支路中， 检测向患者输送的气体的流量； 呼气流量传感器 5 , 设置在呼吸管路中的呼气支路中， 检测患者呼出气体的流量。 具体的， 本发明的流量控制装置可以将触发灵敏度设置为 3LPM, 当需要 进行流速触发的时候， 如果呼气末给出 4.5LPM的基础流， 则可以打开微小的 释放装置， 当气道内全部为新鲜气体后， 关闭该微小的释放装置， 由双向流量 传感器 3监测患者吸入的气体是否达到触发条件， 如果达到， 则进行触发通气。 图 2是根据本发明实施例的流量控制方法的流程图， 如图 2所示该方法包 括如下步骤： 步骤 S202 , 通过图 1中的双向流量控制器 2实现双向流量控制器根据检测 条件来触发向患者输送气体， 以供患者通过呼吸管路进行第一次呼吸。 步骤 S204, 通过图 1中的控制器 3实现在第一次呼吸结束时， 打开释放装 置以释放呼吸管路中的死腔中的气体， 并输送基础流至释放装置。 步骤 S206 , 通过图 1中的双向流量控制器 2实现双向流量控制器再次触发 向患者输送气体， 以供患者进行第二次呼吸。 本发明上述实施例实现在双向流量传感器 1 附近安装一个微小的释放装置 2, 装置在患者的两次呼吸之间的时段内使用该释放装置 2 来释放死腔中的气 体， 同时呼吸机向吸气支路输送基础流至释放装置 2 , 使得释放装置在完全释 放完死腔中的气体， 同时释放部分基础流。 该过程使得患者下次吸入的气体是 纯净的新鲜气体， 减少了患者的呼吸功， 提高了呼吸器的性能。 同时， 可以在吸气通路中安装吸气流量传感器 1 来监测吸气流量， 在呼气 通路中安装呼气流量传感器 2来监测呼气流量， 而最接近患者的双向流量传感 器 3 实时监测进入患者的气体， 此外为了减小死腔中的气体， 在双向流量传感 器 3附近安装一个微小的释放装置。 优选的， 当进行流速触发工作时候， 开始 基础基础流的时间可以取最小呼气时间和呼气末比较后的最大值， 一般选择呼 气末的时间值， 呼气末的判断是由气道压力和呼气流速综合判定的。 本发明实施例中， 在呼吸机打开释放装置 2以释放呼吸管路中的死腔中的 气体， 并输出基础流至释放装置 2的步骤中包括： 呼吸机打开释放装置 2的气 孔来释放死腔中的气体， 释放装置 2设置在呼吸管路的 Y型接口和患者之间； 呼吸机向呼吸管路中的吸气支路输送基础流， 基础流经由吸气支路流向释放装 置 2, 使得释放装置 2释放基础流， 其中， 基础流的流速值为触发灵敏度与预 定流速值之和； 关闭释放装置， 基础流流向呼吸管路中的呼气支路。 该实施例 实现释放装置 2空腔量的过程， 同时在释放过程中利用基础流使得靠近患者一 端的呼吸管路中都是新鲜气体。 优选的， 装置可以通过控制器 3控制释放装置 2 的气孔在第一预定时间内关闭， 即实现设定预定的时间来打开和关闭释放装 置 2, 以防止该释放装置 2始终处于打开状态或者打开状态过长， 防止浪费呼 吸管路中传输来的气体。 本发明上述实施例中， 在呼吸机打开释放装置以释放呼吸管路中的死腔中 的气体， 并输出基础流至释放装置之前， 方法还包括： 判断第一次呼吸是否结 束， 当第一次呼吸处于呼气末时， 第一次呼吸结束， 开始打开释放装置， 否则， 继续检测第一呼吸的状态， 直到检测到第一次呼吸处于呼气末的状态。 该实施 例控制释放基础流的过程处于患者完成一次呼吸之后， 下一次呼吸之前， 使得 更加严密的完成释放呼吸管路中的基础流， 减少了死腔中的气体。 本发明实施例中可以实现在呼吸机打开释放装置以释放呼吸管路中的死腔 中的气体， 并输出基础流至释放装置之后， 方法还包括： 根据检测条件判断是 否触发向患者输送气体， 当患者的吸气流量的流量值达到触发灵敏度时， 开始 向患者输送气体， 否则， 在第二预定时间内强制触发向患者输送气体。 该实施 例将患者的吸气流量是否超过触发灵敏度作为检测条件， 来控制装置在保证减 少空腔量的同时， 及时向患者传输气体， 以防患者接收到的气体断流。 本发明的上述方案釆用高精度流量传感器 3 ,配合与触发灵敏度相关联的基 础流， 并且关键性的在接近患者端增加与流量传感器连接的释放装置 2, 在提 高流速触发的灵敏度的同时实现减少死腔中的气体。 图 3是根据本发明实施例优选的流量控制方法的流程图。 如图 3所示， 在患者开始使用本发明控制方法的时候， 首先检测是否触发 传输气体， 如果触发气源传输气体， 患者开始进行呼吸， 同时开始检测患者本 次呼吸的呼气末时刻， 直到检测到呼吸末时， 即当达到呼气末时候， 呼吸机输 送出基础流， 基础流的大小与触发灵敏度相关联， 具体的， 本发明实施过程中 可以釆用下述关系： 基础流 =触发灵敏度 +1.5LPM, 呼吸机在给出基础流的同 时并在检测到基础流的几十毫秒内， 打开微小的释放装置 2, 基础流通过释放 装置 2上微小的呼气口流出， 等到第二次气体传输来的时候， 可以保持气道内 的气体为新鲜气体。 当气道内的气体均为新鲜气体后关闭微小的释放装置， 由流量传感器 3判 断患者是否进行触发， 如果触发达到触发灵敏度 (触发灵敏度为 0 ~ 20LPM连续 可调)， 则进行触发通气。 由于流量传感器 3最接近患者， 所以最先感知患者是 否进行触发， 提高了触发的响应时间； 由于增加微小吸气模块， 可以保证在进 行流速触发前气道内的气体均为新鲜气体， 避免患者进行重复吸入， 从而改善 患者通气环境。 在释放装置工作之前， 如果一直都没有检测到患者触发气源传输气体， 此 时的检测条件是流速触发的检测条件， 系统可以开始釆用压力触发来判断是否 触发传输气体， 如果压力触发成功， 则也开始触发向患者传输新鲜的气体， 或 者系统还可以使用强制触发传输新鲜气体， 即判断在规定时间内， 还没有向患 者传输气体， 则系统自动开始传输， 为患者提供需要的气体， 防止了患者窒息。 本发明还可以提供一种呼吸机，该呼吸机可以上述任意一种流量控制装置。 需要说明的是， 在附图的流程图示出的步骤可以在诸如一组计算机可执行 指令的计算机系统中执行， 并且， 虽然在流程图中示出了逻辑顺序， 但是在某 些情况下， 可以以不同于此处的顺序执行所示出或描述的步骤。 从以上的描述中， 可以看出， 本发明实现了如下技术效果： 釆用本方案实 现的流速触发， 可以减少气体在管路的时间， 在用呼吸机病人的管路中始终有 新鲜气体， 当病人有吸气动作 时， 就可以吸到新鲜气体， 减少患者的呼吸功， 具有很好的临床实验效果。 显然， 本领域的技术人员应该明白， 上述的本发明的各模块或各步骤可以 用通用的计算装置来实现， 它们可以集中在单个的计算装置上， 或者分布在多 个计算装置所组成的网络上， 可选地， 它们可以用计算装置可执行的程序代码 来实现， 从而， 可以将它们存储在存储装置中由计算装置来执行， 或者将它们 分别制作成各个集成电路模块， 或者将它们中的多个模块或步骤制作成单个集 成电路模块来实现。 这样， 本发明不限制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领 域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和原则 之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之 内。 TECHNICAL FIELD The present invention relates to the field of medical devices, and in particular to a flow control method, device, and ventilator. BACKGROUND OF THE INVENTION Ventilator generally has two trigger modes: pressure trigger and flow rate trigger. The flow rate triggering method relies on flow sensitivity to trigger the patient's command or spontaneous breathing. At present, the clinical use of multiple flow rate triggering methods. The ventilator flow rate can be triggered in a variety of ways. The trigger sensitivity is triggered according to the percentage, and some is triggered according to the specific flow rate value, but basically the basic flow, the size of the basic flow and the time given by the basic flow are given. It will affect the control accuracy of the flow rate trigger, the size of the base stream and the time given by the base stream are not appropriate, which may cause false triggering or triggering difficulties. At present, the basic flow given by most ventilators is fixed or set by the gear position. In order to improve the flow rate trigger sensitivity and flow response time, some ventilators introduce neuromodulation assisted ventilation controlled by transverse electrical activity, but due to the complicated operation, they are not widely used in clinical practice. In clinical use, when the ventilator performs the flow rate triggering operation, the problems often encountered are false triggering and triggering difficulties. Sometimes, after monitoring the triggering, the machine gives a certain delay in triggering ventilation. The prior art can be realized. When the patient has an inspiratory triggering effort, the ventilator can give the gas, and the amount of gas given is exactly what the patient needs, but in the process, there will be an increase in the breathing device due to the addition of related devices, such as two-way. The flow sensor and the pipeline cause the dead space to become larger. The gas in the dead space means that after the patient completes one breath, before the next breath, some remaining in the breathing circuit close to the patient will not be timely. Exhaled gas. At present, the gas in the dead space is left in the breathing circuit of the related art ventilator, which causes the patient to inhale pure fresh air at the beginning of breathing, and no effective solution has been proposed yet. SUMMARY OF THE INVENTION The gas in the dead space is left in the breathing circuit of the ventilator of the related art, which causes the patient to be unable to inhale pure fresh air at the beginning of breathing, and the present invention has not been proposed yet. The main object of the present invention is to provide a flow control method, device and ventilator to solve the above problems. In order to achieve the above object, according to an aspect of the present invention, a flow control method is provided, the method comprising: a bidirectional flow controller triggering delivery of a gas to a patient according to a detection condition for a patient to breathe through the breathing tube for the first time At the end of the first breath, the release device is opened to release the gas in the dead space in the breathing circuit and the base flow is delivered to the release device; the bi-directional flow controller again triggers delivery of gas to the patient for the patient to perform the second Breathing. Further, the step of the ventilator opening the release device to release the gas in the dead space in the breathing circuit and outputting the basal flow to the release device comprises: ventilating the vent of the release device to release the gas in the dead space, releasing The device is disposed between the Y-shaped port of the breathing circuit and the patient; the ventilator delivers a base flow to the inspiratory branch in the breathing circuit, the base flow flowing to the release device via the inspiratory branch, such that the release device releases the base flow, wherein The flow rate of the base flow is the sum of the trigger sensitivity and the predetermined flow rate value; the release device is closed, and the base flow flows to the expiratory branch in the breathing circuit. Further, the controller controls the air vent of the release device to be turned off within a first predetermined time. Further, before the ventilator opens the release device to release the gas in the dead space in the breathing circuit and outputs the basal flow to the release device, the method further comprises: determining whether the first breath is over, when the first breath is at the call At the end of the breath, the first breath is over and the release device is opened, otherwise, the state of the first breath continues to be detected until the first breath is detected to be at the end of expiration. Further, after the ventilator opens the release device to release the gas in the dead space in the breathing circuit and outputs the basal flow to the release device, the method further comprises: determining whether to trigger the delivery of the gas to the patient according to the detection condition, when the patient sucks When the flow rate of the gas flow reaches the trigger sensitivity, gas is initially delivered to the patient, otherwise, the gas is forcibly triggered to be delivered to the patient for a second predetermined time. In order to achieve the above object, according to another aspect of the present invention, a flow control device is provided, the device comprising: a bidirectional flow sensor disposed between a Y-type interface of a breathing circuit and a patient, triggering a patient according to a detection condition The gas is delivered for the patient to breathe through the breathing circuit; the release device is coupled to the bi-directional flow sensor for opening the air vent on the release device to release the gas in the dead space in the breathing circuit at the end of the breath; And connecting to the bidirectional flow sensor, controlling the ventilator to deliver a basic flow to the inspiratory branch in the breathing circuit, the basic flow flowing to the release device via the inspiratory branch, such that the release device releases the base flow. Further, the device further includes: a first determining module, configured to determine whether the first breath is finished, when the first breath is at the end of expiration, the first breath ends, and the release device is started to be turned on, otherwise, the first test is continued The state of breathing until the first breath is detected to be at the end of expiration. Further, the device further includes: a second determining module, configured to determine whether to trigger the delivery of the gas to the patient according to the detection condition, and start to deliver the gas to the patient when the flow rate of the inspiratory flow of the patient reaches the trigger sensitivity, otherwise, in the second Forced triggering of delivery of gas to the patient within a predetermined time. Further, the device further includes: an inspiratory flow sensor disposed in the inspiratory branch in the breathing circuit to detect a flow rate of the gas delivered to the patient; an expiratory flow sensor, an expiratory branch disposed in the respiratory circuit The flow rate of the exhaled gas of the patient is detected. In order to achieve the above object, according to still another aspect of the present invention, a ventilator comprising: any one of the above flow control devices. According to the present invention, the bidirectional flow controller is used to trigger the delivery of gas to the patient according to the detection condition for the patient to breathe through the breathing tube for the first time; at the end of the first breath, the release device is opened to release the breathing circuit. The gas in the dead space, and delivers the base flow to the release device; the bi-directional flow controller again triggers the delivery of gas to the patient for the patient to perform a second breath, which resolves the residual breathing in the breathing circuit of the related art ventilator The gas in the cavity causes the patient to inhale the pure fresh air at the beginning of breathing, so that the patient can always breathe fresh gas. When the patient has an inhalation action, the fresh gas can be sucked, reducing the patient. The effect of exhalation. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a schematic structural view of a flow control device according to an embodiment of the present invention; FIG. 2 is a flow chart of a flow control method according to an embodiment of the present invention; FIG. 3 is a flow control method preferred according to an embodiment of the present invention. Flow chart. detailed description It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. 1 is a schematic structural view of a flow control device according to an embodiment of the present invention. As shown in FIG. 1, the device may include: a bidirectional flow sensor 1 disposed between the Y-shaped port of the respiratory line and the patient, and triggering delivery of gas to the patient according to the detection condition for the patient to breathe through the breathing circuit; The release device 2 is connected to the bidirectional flow sensor 1 for opening the air vent on the release device 2 to release the gas in the dead space in the breathing circuit at the end of the breath; the controller 3 is connected to the bidirectional flow sensor 1 The ventilator is controlled to deliver a base flow to the suction branch in the breathing circuit, the base flow flowing through the suction branch to the release device 2 such that the release device 2 releases the base flow. The above embodiment of the present invention realizes the installation of a tiny release device 2 in the vicinity of the bidirectional flow sensor 1, which uses the release device 2 to release the gas in the dead space during the period between the two breaths of the patient, while the ventilator sucks The gas branch transports the base to the release device 2 such that the release device completely releases the gas in the dead space while releasing a portion of the base flow. This process allows the patient to inhale the next fresh gas, which reduces the patient's breathing and improves the performance of the respirator. Preferably, the device can control the air hole of the release device 2 to be turned off by the controller 3 for a first predetermined time, that is, the time when the setting is reached at a predetermined time, the ventilator will turn off the release device 2 to prevent the release device 2 from being always It is open or open for too long to prevent wastage of gas from the breathing circuit. The device of the present invention may further include: a first determining module, configured to determine whether the first breath is finished, when the first breath is at the end of expiration, the first breath ends, and the release device is started to be turned on, otherwise, the first test is continued. The state of breathing until the first breath is detected to be at the end of expiration. The process of controlling the release of the basal flow in this embodiment is after the patient completes one breath and before the next breath, making The rigorous completion of the release of the basal flow in the breathing circuit reduces the gas in the dead space. The device of the present invention may further include: a second determining module, configured to determine whether to trigger the delivery of the gas to the patient according to the detection condition, and start to deliver the gas to the patient when the flow rate of the inspiratory flow of the patient reaches the trigger sensitivity, otherwise, The second predetermined time is forced to trigger the delivery of gas to the patient. In this embodiment, whether the inspiratory flow rate of the patient exceeds the trigger sensitivity as a detection condition, the control device transmits the gas to the patient in time while ensuring the reduction of the amount of the cavity, so as to prevent the gas received by the patient from being interrupted. In the above embodiment of the present invention, the apparatus may further include: an inspiratory flow sensor 4 disposed in the inspiratory branch in the breathing circuit to detect a flow rate of the gas delivered to the patient; the exhalation flow sensor 5 is disposed at In the expiratory limb in the breathing circuit, the flow of exhaled gas from the patient is detected. Specifically, the flow control device of the present invention can set the trigger sensitivity to 3LPM. When the flow rate trigger is required, if the base flow of 4.5 LPM is given at the end of the exhalation, a small release device can be opened, when all the air passages are After the fresh gas, the tiny release device is turned off, and the bidirectional flow sensor 3 monitors whether the gas inhaled by the patient reaches the trigger condition, and if so, triggers the ventilation. 2 is a flowchart of a flow control method according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps: Step S202: The bidirectional flow controller 2 of FIG. 1 implements a bidirectional flow controller to trigger according to a detection condition. Gas is delivered to the patient for the patient to breathe for the first time through the breathing circuit. Step S204, by the controller 3 in Fig. 1, at the end of the first breath, the release device is opened to release the gas in the dead space in the breathing circuit, and the base flow is delivered to the release device. Step S206, the bidirectional flow controller 2 of FIG. 1 realizes that the bidirectional flow controller triggers the gas to be delivered to the patient again for the patient to perform the second breath. The above embodiment of the present invention realizes the installation of a tiny release device 2 in the vicinity of the bidirectional flow sensor 1, which uses the release device 2 to release the gas in the dead space during the period between the two breaths of the patient, while the ventilator sucks The gas branch transports the base to the release device 2 such that the release device completely releases the gas in the dead space while releasing a portion of the base flow. This process allows the patient to inhale the next fresh gas, which reduces the patient's breathing and improves the performance of the respirator. At the same time, the inspiratory flow sensor 1 can be installed in the inhalation passage to monitor the inspiratory flow, and the expiratory flow sensor 2 is installed in the expiratory passage to monitor the expiratory flow, and the bidirectional flow sensor 3 closest to the patient monitors the patient in real time. In addition, in order to reduce the gas in the dead space, a small release device is installed in the vicinity of the bidirectional flow sensor 3. Preferably, when the flow rate triggering operation is performed, the time of starting the basic base flow may take the minimum expiratory time and the maximum value after the end of expiration, generally selecting the time value of the end of expiration, and the end of expiration is determined by the airway. The pressure and expiratory flow rate are comprehensively determined. In the embodiment of the present invention, the step of the ventilator opening the release device 2 to release the gas in the dead space in the breathing circuit and outputting the basal flow to the release device 2 includes: the ventilator opens the vent of the release device 2 to release the dead The gas in the chamber, the release device 2 is disposed between the Y-shaped port of the breathing circuit and the patient; the ventilator delivers a base flow to the inspiratory branch in the breathing circuit, and the base flow flows to the release device 2 via the inspiratory branch, The release device 2 is caused to release the base flow, wherein the flow rate of the base flow is the sum of the trigger sensitivity and the predetermined flow rate value; the release device is closed, and the base flow flows to the expiratory branch in the breathing circuit. This embodiment achieves the process of releasing the amount of cavity of the device 2 while utilizing the base flow during the release process so that fresh air is present in the breathing circuit near one end of the patient. Preferably, the device can be controlled by the controller 3 to control the air vent of the release device 2 to be turned off within a first predetermined time, that is, to achieve a predetermined time to open and close the release device 2 to prevent the release device 2 from being always open or open. The condition is too long to prevent wasting gas from the breathing circuit. In the above embodiment of the present invention, before the ventilator opens the release device to release the gas in the dead space in the breathing circuit and outputs the basal flow to the release device, the method further includes: determining whether the first breath is over, when the first When the second breath is at the end of expiration, the first breath is over, and the release device is started to open. Otherwise, the state of the first breath is continuously detected until the first breath is detected to be in the state of end-expiration. The process of controlling the release of the basal flow in this embodiment is such that after the patient completes one breath, before the next breath, the basal flow in the breathing circuit is released more tightly, reducing the gas in the dead space. In the embodiment of the present invention, after the ventilator opens the release device to release the gas in the dead space in the breathing circuit and outputs the basic flow to the release device, the method further includes: determining whether to trigger the delivery of the gas to the patient according to the detection condition, When the flow rate of the inspiratory flow of the patient reaches the trigger sensitivity, gas is initially delivered to the patient, otherwise, the gas is forcibly triggered to be delivered to the patient for a second predetermined time. In this embodiment, whether the inspiratory flow rate of the patient exceeds the trigger sensitivity as a detection condition, the control device transmits the gas to the patient in time while ensuring the reduction of the amount of the cavity, so as to prevent the gas received by the patient from being interrupted. The above solution of the present invention uses a high-precision flow sensor 3 to match the basic flow associated with the trigger sensitivity, and critically increases the release device 2 connected to the flow sensor near the patient end, while achieving the sensitivity of the flow rate triggering. Reduce the gas in the dead space. 3 is a flow chart of a preferred flow control method in accordance with an embodiment of the present invention. As shown in FIG. 3, when the patient starts using the control method of the present invention, it first detects whether the transmission gas is triggered. If the gas source is triggered to transmit the gas, the patient starts to breathe, and at the same time, starts detecting the end-expiration time of the patient's current breath until When the end of the breath is detected, that is, when the end of expiration is reached, the ventilator delivers the basic flow, and the size of the basic flow is related to the trigger sensitivity. Specifically, the following relationship can be used in the implementation of the present invention: Basic flow = trigger Sensitivity +1.5 LPM, the ventilator opens the tiny release device 2 while giving the base flow and within a few tens of milliseconds of detecting the underlying flow, the base flow is released A small exhalation port on the device 2 flows out, and when the second gas is delivered, the gas in the air channel can be kept fresh. When the gas in the airway is fresh gas, the tiny release device is turned off, and the flow sensor 3 determines whether the patient is triggering. If the trigger reaches the trigger sensitivity (the trigger sensitivity is continuously adjustable from 0 to 20 LPM), the triggering is performed. Since the flow sensor 3 is closest to the patient, it is first perceived whether the patient is triggered or not, and the response time of the trigger is increased. By adding a small inhalation module, it is ensured that the gas in the airway is fresh gas before the flow rate is triggered, and the patient is prevented from proceeding. Repeat inhalation to improve the patient's ventilation environment. Before the release device works, if the patient does not detect the gas source gas transmission, the detection condition at this time is the detection condition of the flow rate trigger, and the system can start to use the pressure trigger to determine whether to trigger the transmission gas. If the pressure triggers successfully, It also starts to trigger the transmission of fresh gas to the patient, or the system can also use the forced trigger to transmit fresh gas, that is, to determine that the gas has not been delivered to the patient within the specified time, the system automatically starts transmitting, providing the patient with the required gas, preventing The patient suffocated. The present invention can also provide a ventilator which can be any of the above flow control devices. It should be noted that the steps shown in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and, although the logical order is shown in the flowchart, in some cases, The steps shown or described may be performed in an order different than that herein. From the above description, it can be seen that the present invention achieves the following technical effects: 流速 The flow rate trigger achieved by the present scheme can reduce the time of the gas in the pipeline, and there is always fresh gas in the pipeline of the patient using the ventilator. When the patient has an inhalation action, it can absorb fresh gas and reduce the patient's breathing work, which has a good clinical experiment effect. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR112012032967A BR112012032967A2 (en) | 2010-12-31 | 2011-12-26 | flow and fan control method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010619916.7 | 2010-12-31 | ||
| CN2010106199167A CN102266610A (en) | 2010-12-31 | 2010-12-31 | Flow control method, device and breathing machine |
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| Publication Number | Publication Date |
|---|---|
| WO2012089088A1 true WO2012089088A1 (en) | 2012-07-05 |
Family
ID=45049188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2011/084689 Ceased WO2012089088A1 (en) | 2010-12-31 | 2011-12-26 | Method, device and respirator for controlling flow |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102266610A (en) |
| BR (1) | BR112012032967A2 (en) |
| WO (1) | WO2012089088A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114469060A (en) * | 2021-12-31 | 2022-05-13 | 天津怡和嘉业医疗科技有限公司 | Respiration phase determination method and device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102266610A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Flow control method, device and breathing machine |
| CN112118884A (en) * | 2018-05-14 | 2020-12-22 | 柯惠有限合伙公司 | System and method for respiratory effort detection with signal distortion |
| CN114377258B (en) * | 2021-12-21 | 2023-09-19 | 北京谊安医疗系统股份有限公司 | Control device and control method for basic flow of neonate breathing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88102278A (en) * | 1988-04-18 | 1988-10-19 | 江西医学院第一附属医院 | Exhalation device for removing carbon dioxide from the trachea |
| US5400778A (en) * | 1990-06-18 | 1995-03-28 | Siemens-Elema Ab | Method and device for reduction of rebreathing of gas from dead space |
| US20030131665A1 (en) * | 2002-01-17 | 2003-07-17 | Siemens Elema Ab | Device for reducing dead space in a ventilator system |
| CN100998902A (en) * | 2006-01-13 | 2007-07-18 | 深圳迈瑞生物医疗电子股份有限公司 | Method and device for mornitering and controlling flow |
| CN102266610A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Flow control method, device and breathing machine |
-
2010
- 2010-12-31 CN CN2010106199167A patent/CN102266610A/en active Pending
-
2011
- 2011-12-26 WO PCT/CN2011/084689 patent/WO2012089088A1/en not_active Ceased
- 2011-12-26 BR BR112012032967A patent/BR112012032967A2/en not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN88102278A (en) * | 1988-04-18 | 1988-10-19 | 江西医学院第一附属医院 | Exhalation device for removing carbon dioxide from the trachea |
| US5400778A (en) * | 1990-06-18 | 1995-03-28 | Siemens-Elema Ab | Method and device for reduction of rebreathing of gas from dead space |
| US20030131665A1 (en) * | 2002-01-17 | 2003-07-17 | Siemens Elema Ab | Device for reducing dead space in a ventilator system |
| CN100998902A (en) * | 2006-01-13 | 2007-07-18 | 深圳迈瑞生物医疗电子股份有限公司 | Method and device for mornitering and controlling flow |
| CN102266610A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Flow control method, device and breathing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114469060A (en) * | 2021-12-31 | 2022-05-13 | 天津怡和嘉业医疗科技有限公司 | Respiration phase determination method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102266610A (en) | 2011-12-07 |
| BR112012032967A2 (en) | 2016-11-22 |
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