WO2021134374A1 - 医用通气系统 - Google Patents

医用通气系统 Download PDF

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Publication number
WO2021134374A1
WO2021134374A1 PCT/CN2019/130215 CN2019130215W WO2021134374A1 WO 2021134374 A1 WO2021134374 A1 WO 2021134374A1 CN 2019130215 W CN2019130215 W CN 2019130215W WO 2021134374 A1 WO2021134374 A1 WO 2021134374A1
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Prior art keywords
gas
branch
breathing circuit
mode
gas branch
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PCT/CN2019/130215
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English (en)
French (fr)
Inventor
邬学涛
陈培涛
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深圳迈瑞生物医疗电子股份有限公司
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Priority to EP19958344.4A priority Critical patent/EP4085955A4/en
Priority to CN201980103010.9A priority patent/CN114828925A/zh
Priority to PCT/CN2019/130215 priority patent/WO2021134374A1/zh
Publication of WO2021134374A1 publication Critical patent/WO2021134374A1/zh

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Definitions

  • This application relates to the technical field of medical equipment, and in particular to a medical ventilation system.
  • the doctor In order to increase the oxygenation index of the patient and improve the condition of the intubated patient, the doctor needs to provide the patient with high flow rate oxygen ventilation.
  • This application provides a medical ventilation system.
  • a medical ventilation system including:
  • Input device first gas source interface, second gas source interface, breathing circuit, driving gas branch, fresh gas branch, ventilation controller; one end of the driving gas branch is connected to the first gas source interface, and the other end Connected with the breathing circuit;
  • One end of the fresh gas branch is connected to the first gas source interface and the second gas source interface, and the other end is connected to a breathing circuit;
  • the ventilation controller controls the driving gas branch to provide ventilation support to the patient via the breathing circuit according to the first mode control information received by the input device, and controls the fresh gas branch to output anesthetics to the breathing circuit Fresh gas; or
  • the ventilation controller controls the driving gas branch to output the gas output by the first gas source interface to the breathing circuit according to the second mode control information received by the input device, and controls the direction of the fresh gas branch
  • the breathing circuit outputs at least the gas output by the first gas source interface or the second gas source interface.
  • the medical ventilation system provided by the embodiments of the present application uses the airway system of the medical ventilation system without adding new equipment or configurations, not only can provide patients with routine ventilation support, but also can give patients
  • the high flow rate oxygen supply supports the pipe connection method of the prior art, and the existing pipe connection method does not need to be changed, which reduces the complexity.
  • FIG. 1 is a schematic block diagram of the structure of a medical ventilation system provided by an embodiment of the present application
  • Figure 2 is a schematic structural diagram of a medical ventilation system provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a first mode when another medical ventilation system provided by an embodiment of the present application adopts a bellows-less technology
  • FIG. 4 is a schematic structural diagram of a second mode when another medical ventilation system provided by an embodiment of the present application adopts a bellows-less technology
  • FIG. 5 is a schematic structural diagram of the first mode when another medical ventilation system adopts the bellows technology provided by the embodiment of the present application;
  • Fig. 6 is a schematic structural diagram of a second mode when another medical ventilation system provided by an embodiment of the present application adopts the bellows technology.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present application, “multiple” means two or more than two, unless otherwise specifically defined.
  • the most basic and most important function of modern medical ventilation systems is to assist or control breathing. According to whether the oxygen flow rate provided by the medical ventilation system can fully meet the patient's inhalation needs, they are divided into low flow rate oxygen supply systems and high flow rate oxygen supply systems. system.
  • the oxygen supply flow rate of the low-flow oxygen supply system is relatively slow, and cannot provide the patient with all the oxygen inhalation requirements, but the patient is more comfortable and convenient to use.
  • the oxygen supply flow rate of the high-flow oxygen supply system is relatively fast. During oxygen therapy, it provides pure oxygen with a maximum flow rate of 60L/min or more, or a mixed gas with a maximum flow rate of 100L/min, which can fully meet the patient's oxygen inhalation needs and is effective Increase the oxygenation index, and if necessary, provide high-flow oxygen therapy to the patient.
  • the embodiment of the application provides a medical ventilation system that integrates the conventional functions of a medical ventilation system and a high-flow oxygen supply function. Without adding new equipment or configurations, the medical ventilation system is used to realize a patient-end high-flow oxygen supply program.
  • the tube is simple and easy for doctors to use.
  • FIG. 1 is a schematic block diagram of a medical ventilation system provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a medical ventilation system provided by an embodiment of the present application.
  • the medical ventilation system 1000 includes an input device 10, a first gas source interface 11, a second gas source interface 12, a breathing circuit 13, a driving gas branch 14, a fresh gas branch 15, and a ventilation controller 16.
  • the input device 10 may be a switch for switching between the first mode and the second mode, and may also be a mechanical knob, an electronic input device (touch screen), or a control panel and other devices that receive ventilation control information. It can be understood that this embodiment is not limited to the aforementioned input device 10.
  • the first gas source port 11 and the second gas source port 12 can be connected to gas cylinders or the centralized gas supply system of the hospital, and the first gas source port 11 and the second gas source port 12 can be connected to gas cylinders or the centralized gas supply system of the hospital.
  • the gas system is connected to oxygen and auxiliary gas.
  • the auxiliary gas may be air or laughing gas.
  • One end of the driving gas branch circuit 14 is connected to the first gas source interface 11, and the other end is connected to the breathing circuit 13.
  • the gas branch 14 is driven to provide respiratory support to the patient 133 through the breathing circuit 13.
  • the gas branch 14 is driven to output gas to the patient 133 through the breathing circuit 13;
  • the gas branch 14 and the breathing circuit 13 are driven to receive the gas exhaled by the patient 133.
  • the fresh gas branch 15 outputs the oxygen and auxiliary gas output from the first gas source port 11 and the second gas source port 12 through the anesthesia vaporizer 153 and then outputs the fresh gas containing anesthetics to the breathing circuit 13 , It is delivered to the patient 133 through the breathing circuit 13, so as to supplement the supply of anesthetics to the patient 133.
  • the ventilation controller 16 controls the driving gas branch 14 to provide ventilation support to the patient via the breathing circuit 13, and controls the fresh gas branch 15 to output anesthetic-containing fresh gas to the breathing circuit 13 .
  • the ventilation controller 16 receives the first mode control information output by the input device 10, and controls the medical ventilation system 1000 to enter the first mode.
  • the driving gas branch 14 is controlled to provide ventilation support to the patient via the breathing circuit 13
  • the fresh gas branch 15 is controlled to output fresh gas containing anesthetic to the breathing circuit 13 to achieve anesthesia for the patient.
  • the ventilation controller 16 controls the driving gas branch 14 to output the first gas to the breathing circuit 13 and the fresh gas branch 15 to output the second gas to the breathing circuit 13 according to the second mode control information received by the input device 10.
  • the ventilation controller 16 receives the second mode control information output by the input device 10, and controls the medical ventilation system 1000 to enter the second mode.
  • the driving gas branch 14 can output the gas output by the first gas source interface 11 to the breathing circuit 13.
  • the fresh gas branch 15 can output at least the first gas source interface 11 or the second gas source interface 11 to the breathing circuit 13. Gas output from the gas source interface 12.
  • the fresh gas branch 15 can also output the gas output by the first gas source interface 11 to the breathing circuit 13. At this time, the first gas source interface 11 is connected to a source of oxygen or air.
  • the fresh gas branch 15 can output the gas output from the second gas source interface 12 to the breathing circuit 13, and the fresh gas branch 15 can also send the gas to the breathing circuit 13 13 Output a mixed gas of the first gas source interface 11 output gas and the second gas source interface 12 output gas. Since both the driving gas branch 14 and the fresh gas branch 15 can adjust the flow rate of the gas, the oxygen concentration of the oxygen input into the breathing circuit 13 and the auxiliary gas can be adjusted adaptively, so as to realize the adjustment of the breathing circuit 13 to the patient 133. Control of output gas flow rate and/or oxygen concentration.
  • the breathing circuit 13 includes an expiratory branch 130 and an inspiratory branch 131.
  • the expiratory branch 130 includes an expiratory line 1300 and an expiratory one-way valve 1301 provided on the expiratory line 1300.
  • the exhalation line 1300, the exhalation one-way valve 1301, and the driving gas branch 14 form an exhalation channel for the patient 133 to expel the exhaled air.
  • the inhalation branch 131 includes an inhalation pipeline 1310, an inhalation check valve 1311 provided on the inhalation pipeline 1310, and an absorption tank 134.
  • the ventilation controller 16 controls the gas output from the first air source interface 11 to provide inhalation Support pressure, filter the exhaled gas in the driving gas branch 14 and the inspiratory branch 131 through the absorption tank 134, and mix the fresh gas output by the fresh gas branch 15 to deliver to the patient 133 to provide inhalation support for the patient 133.
  • the absorption tank 134 is arranged in the inhalation channel and is used to absorb carbon dioxide in the exhaled gas discharged from the driving gas branch 14. In this embodiment, the absorption tank 134 is arranged between the driving gas branch 14 and the suction check valve 1311, and is filled with soda lime.
  • the absorption tank 134 can be filled with other filter materials for filtering carbon dioxide, which is not limited herein. Because there will be moisture inside the breathing circuit 13 during the working process, especially the absorption tank 134 will release water during the working process in the form of liquid or gas. Therefore, when oxygen is supplied, the oxygen passes through the breathing circuit 13, especially In the process of the absorption tank 134, the gas will be humidified, thereby acting as a humidifier.
  • a medical ventilation system 1000 designed in the present application when the user selects the first mode through the input device 10, the ventilation controller 16 is used to control the driving gas branch 14 to provide ventilation support for the patient through the breathing circuit 13, and to control the fresh gas branch 15 Output fresh gas containing anesthetics to the breathing circuit 13; when the user selects the second mode through the input device 10, the ventilation controller 16 is used to control the driving gas branch 14 to output the gas output by the first gas source interface 11 to the breathing circuit 13, and The fresh gas branch 15 is controlled to output at least the gas output from the first gas source interface 11 or the second gas source interface 12 to the breathing circuit 13. Therefore, while maintaining the conventional anesthesia function of the prior art medical ventilation system, when the second mode is selected, the high-flow oxygen supply function can be realized without changing the existing connecting pipe method, which effectively reduces the prior art high-flow oxygen supply The complexity of the equipment.
  • the first mode control information may include one or more of the first mode selection information or the first mode ventilation control information; the second mode control information includes the second mode selection information or the second mode One or more of the ventilation control information.
  • the first mode selection information is the mode selection information for selecting the conventional function of the medical ventilation system
  • the second mode information is the mode selection information for selecting the high-flow oxygen supply function of the medical ventilation system
  • the selection information is all input by the user through the input device 10.
  • the first mode ventilation control information may include one or more of conventional ventilation parameters such as respiratory frequency, inspiratory flow rate, inspiratory pressure, expiratory pressure, anesthetic concentration, or tidal volume, which the user can adjust as needed.
  • conventional ventilation parameters such as respiratory frequency, inspiratory flow rate, inspiratory pressure, expiratory pressure, anesthetic concentration, or tidal volume, which the user can adjust as needed.
  • the second mode ventilation control information may include the supply air flow rate and/or the supply oxygen concentration. Since the second mode is a high flow rate oxygen therapy mode, by adjusting the air supply flow rate and/or the oxygen supply concentration, it is possible to provide the patient 133 with high flow rate oxygen.
  • the driving gas branch 14 includes a driving main circuit 140, which includes a first flow controller 142 and a gas storage device connected in sequence, and an exhaust gas storage device connected to the gas storage device. Exhalation valve 143 for excess gas.
  • the air storage device can adopt the air box technology or the air box technology.
  • the air storage device can be a volumetric exchanger 141, which is similar to a long and narrow airway with no rigid separation at both ends. It can be ventilated. Open; the first flow controller 142 can be a proportional valve for controlling the flow rate of oxygen or auxiliary gas entering the volumetric exchanger 141; the exhalation valve 143 discharges the excess gas in the volumetric exchanger 141 when the patient 133 exhales, To limit the expiratory pressure of the patient 133.
  • Fig. 3 is a schematic structural diagram of the medical ventilation system in the first mode using the capacity exchanger 141.
  • the ventilation controller 16 receives the first mode control information of the input device 10, it switches the mode of the medical ventilation system to the first mode, and drives the gas branch 14 to provide respiratory support to the patient 133 through the breathing circuit 13.
  • the volume exchanger 141 outputs gas to the patient 133 through the breathing circuit 13; when the patient 133 needs to exhale, the volume exchanger 141 and the breathing circuit 13 receive the gas exhaled by the patient 133.
  • the fresh gas branch 15 outputs the oxygen and auxiliary gas output from the first gas source interface 11 and the second gas source interface 12 through the anesthesia vaporizer 153 and then outputs the fresh gas containing anesthetics to the breathing circuit 13. It is delivered to the patient 133 through the breathing circuit 13 to supplement the anesthetic supply to the patient 133.
  • the anesthesia vaporizer 153 can be turned off, so as to realize the ventilation support of the patient 133 by the medical ventilation system and the low flow oxygen support.
  • Fig. 4 is a schematic structural diagram of the medical ventilation system in the second mode using the capacity exchanger 141.
  • the ventilation controller 16 receives the second mode control information of the input device 10, it switches the mode of the medical ventilation system to the second mode, and the driving gas branch 14 can output the gas output by the first gas source interface 11 to the breathing circuit 13 Accordingly, the fresh gas branch 15 can output at least the gas output from the first gas source interface 11 or the second gas source interface 12 to the breathing circuit.
  • Fig. 5 is a schematic structural diagram of the medical ventilation system in the first mode when the bellows technology is adopted.
  • the ventilation controller 16 controls the driving gas branch 14 to provide ventilation support for the patient, specifically: the bellows 144 provides respiratory support to the patient 133 through the breathing circuit 13, and when the patient 133 needs to inhale, the bellows 144 breathes
  • the circuit 13 outputs gas to the patient 133; when the patient 133 needs to exhale, the bellows 144 and the breathing circuit 13 receive the gas exhaled by the patient 133.
  • the fresh gas branch 15 outputs the oxygen and auxiliary gas output from the first gas source interface 11 and the second gas source interface 12 through the anesthesia vaporizer 153 and then outputs the fresh gas containing anesthetics to the breathing circuit 13. It is delivered to the patient 133 through the breathing circuit 13, so as to supplement the anesthetic supply and/or oxygen support to the patient 133.
  • Fig. 6 is a schematic structural diagram of the medical ventilation system in the second mode when the bellows technology is adopted.
  • One end of the bellows 144 is connected to the first air source interface 11 via the first flow controller 142, and the other end is connected with the expiratory branch 130 and the inspiratory branch 131.
  • the bellows 144 is provided with a folding bag 1441.
  • the first flow controller 142 controls the driving gas flowing into the wind box 144 through the first gas source interface 11 to drive the gas to compress the folding bag 1441.
  • the exhalation valve 143 is connected to the folding bag 1441 to discharge excess air in the folding bag 1441 and control the pressure of the patient's 133 exhaled air.
  • the gas output by the first gas source interface 11 is output to the breathing circuit 13 through the air storage bypass 145 of the driving gas branch 14. Accordingly, the fresh gas branch 15 outputs at least the first gas to the breathing circuit 13 The gas output from the source interface 11 or the second gas source interface 12.
  • the ventilation controller 16 when the ventilation controller 16 receives the second mode control information of the input device 10, it switches the mode of the medical ventilation system to the second mode, closes the driving main circuit 140 where the bellows 144 is located, and opens the air storage bypass 145 , Output the gas output by the first gas source interface 11 to the breathing circuit 13 via the storage bypass 145; accordingly, the fresh gas branch 15 outputs at least the first gas source interface 11 or the second gas source interface 12 to the breathing circuit 13 gas.
  • closing the driving main circuit 140 where the wind box 144 is located or opening the air storage bypass 145 can be controlled by driving the corresponding valve on the main circuit 140 or the air storage bypass 145.
  • the fresh gas branch 15 includes a first gas branch 150, a second gas branch 151, and a mixing branch 152.
  • One end of the first gas branch 150 is connected to The first gas source interface 11 is connected, one end of the second gas branch 151 is connected to the second gas source interface 12, and the other ends of the first gas branch 150 and the second gas branch 151 are connected to the mixing branch 152.
  • An anesthesia vaporizer 153 is provided on the mixing branch 152.
  • the fresh gas input through the first gas branch 150 and the second gas branch 151 is output to the breathing circuit 13 through the anesthesia vaporizer 153.
  • the driving gas branch 14 provides respiratory support to the patient 133 through the breathing circuit 13, and when the patient 133 needs to inhale, the gas branch 14 is driven to pass through
  • the breathing circuit 13 outputs gas to the patient 133; when the patient 133 needs to exhale, the gas branch 14 and the breathing circuit 13 are driven to receive the gas exhaled by the patient 133.
  • the mixing branch 152 evaporates the oxygen and auxiliary gas output from the first gas source interface 11 and the second gas source interface 12 through the anesthesia vaporizer 153 After that, the fresh gas containing anesthetic is output to the breathing circuit 13 and delivered to the patient 133 through the breathing circuit 13 to realize the supply and supplement of the anesthetic for the patient 133.
  • the driving gas branch 14 can output the gas output by the first gas source interface 11 to the breathing circuit 13.
  • the first gas branch 150 and/or the second gas branch The path 151 outputs at least the gas output from the first gas source interface 11 or the second gas source interface 12 to the breathing circuit 13.
  • the gas from the first gas branch 150 and/or the second gas branch 151 may be output to the breathing circuit 13 through the mixing branch 152, and at this time, the anesthesia vaporizer 153 is closed.
  • the fresh gas branch 15 further includes an evaporator bypass 154, and the gas from the first gas branch 150 and/or the second gas branch 151 can also be output to the breathing circuit through the evaporator bypass 154 13.
  • valve control closing or opening of the anesthesia vaporizer 153 and the mixing branch 152 where it is located, as well as the vaporizer bypass 154, can be achieved through valve control.
  • the first gas branch 150 is provided with a second flow controller 155 for controlling the input gas flow of the first gas source interface 11, and the second gas branch 151 is provided with a second gas source for controlling The interface 12 inputs the third flow controller 156 of the gas flow.
  • the second flow controller 155 or the third flow controller 156 may be an electronic flow meter or a mechanical flow meter that can realize flow control.
  • a flow sensor 17 may be provided on the driving gas branch 14, the first gas branch 150, and the second gas branch 151, and an expiratory flow sensor may be provided on the expiratory branch 130 of the breathing circuit 13. 18, and an inspiratory flow sensor 19 is provided on the inspiratory branch 131 to detect the gas flow rate on the corresponding branch.
  • connection should be understood in a broad sense, unless otherwise clearly specified and limited.
  • it can be a fixed connection or a detachable connection.
  • It can be a mechanical connection or an electrical connection.
  • It can be directly connected, or indirectly connected through an intermediate medium, and it can be a communication between two elements or an interaction relationship between two elements.
  • the specific meanings of the above-mentioned terms in this application can be understood according to specific circumstances.
  • the "on" or “under” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

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Abstract

一种医用通气系统（1000），包括输入设备（10）、第一气源接口（11）、第二气源接口（12）、呼吸回路（13）、驱动气体支路（14）、新鲜气体支路（15）、通气控制器（16）；通气控制器（16），根据输入设备（10）接收到的第一模式控制信息，控制驱动气体支路（14）经呼吸回路（13）为患者提供通气支持，控制新鲜气体支路（15）向呼吸回路（13）输出含麻药的新鲜气体；或通气控制器（16），根据输入设备（10）接收到的第二模式控制信息，控制驱动气体支路（14）向呼吸回路（13）输出第一气体，控制新鲜气体支路（15）向呼吸回路（13）输出第二气体。在保持现有技术医用通气系统的常规麻醉功能下，当选择第二模式时，能够实现高流速给氧功能，不需要改变现有的连管方式，有效降低现有技术高流速给氧设备的复杂性。

Description

医用通气系统 技术领域
本申请涉及医疗设备技术领域，尤其涉及一种医用通气系统。
背景技术
为了提高病人的氧合指数，改善插管病人的病情，医生需要为病人提供高流速给氧通气。
发明内容
本申请提供了一种医用通气系统。
根据本申请实施例，提供了一种医用通气系统，包括：
输入设备、第一气源接口、第二气源接口、呼吸回路、驱动气体支路、新鲜气体支路、通气控制器；所述驱动气体支路的一端与第一气源接口连接，另一端与所述呼吸回路连接；
所述新鲜气体支路的一端与所述第一气源接口和第二气源接口连接，另一端与呼吸回路连接；
所述通气控制器，根据所述输入设备接收到的第一模式控制信息，控制驱动气体支路经所述呼吸回路为患者提供通气支持，控制所述新鲜气体支路向所述呼吸回路输出含麻药的新鲜气体；或
所述通气控制器，根据所述输入设备接收到的第二模式控制信息，控制所述驱动气体支路向所述呼吸回路输出所述第一气源接口输出的气体，控制所述新鲜气体支路向所述呼吸回路输出至少所述第一气源接口或所述第二气源接口输出的气体。
本申请实施例提供的医用通气系统，结合现有医用通气系统技术，在不增加新的设备或配置的前提下，利用医用通气系统气路系统，不但可以给予患者常规通气支持，还可以给予患者高流速给氧支持，沿用了现有技术的连管方式，不需要改变现有的连管方式，降低了复杂度。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本申请。
附图说明
为了更清楚地说明本申请实施例技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请的实施例提供的一种医用通气系统的结构示意框图；
图2是本申请的实施例提供的一种医用通气系统的结构示意图；
图3是本申请的实施例提供的另一种医用通气系统采用无风箱技术时第一模式的结构示意图；
图4是本申请的实施例提供的另一种医用通气系统采用无风箱技术时第二模式的结构示意图；
图5是本申请的实施例提供的又一种医用通气系统采用风箱技术时第一模式的结构示意图；
图6是本申请的实施例提供的又一种医用通气系统采用风箱技术时第二模式的结构示意图。
附图标记说明：
1000、医用通气系统；
10、输入设备；11、第一气源接口；12、第二气源接口；13、呼吸回路；14、驱动气体支路；15、新鲜气体支路；16、通气控制器；17、流量传感器；18、呼气流量传感器；19、吸气流量传感器；
130、呼气支路；131、吸气支路；132、管道；133、病人；134、吸收罐；
1300、呼气管路；1301、呼气单向阀；
1310、吸气管路；1311、吸气单向阀；
140、驱动主路、141、容量交换器；142、第一流量控制器；143、呼气阀；144、风箱；145、贮气旁路；1441、折叠囊；
150、第一气体支路；151、第二气体支路；152、混合支路；153、麻醉蒸发器；154、蒸发器旁路；155、第二流量控制器；156、第三 流量控制器。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
现代的医用通气系统，最基本且最重要的功能还是辅助或控制呼吸，根据医用通气系统提供的氧流速能否完全满足病人的吸气需要将它们分为低流速给氧系统和高流速给氧系统。
具体地，低流速给氧系统的给氧流速较慢，不能为病人提供全部氧吸入的需求，但是，患者更为舒适，应用方便。
高流速给氧系统的给氧流速较快，氧疗时，提供最大流速达到或大于60L/min纯氧，或者提供最大流速达到100L/min的混合气体，可以完全满足患者氧吸入的需求，有效提高氧合指数，在必要时，可给患者提供高流速氧疗。
本申请实施例提供一种集成医用通气系统常规功能及高流速给氧功能的医用通气系统，在不增加新的设备或配置的前提下，利用医用通气系统实现病人端高流速给氧方案，连管简单，便于医生使用。
请参阅图1和图2，图1是本申请的实施例提供的一种医用通气系统的结构 示意框图，图2是本申请的实施例提供的一种医用通气系统的结构示意图。该医用通气系统1000包括输入设备10、第一气源接口11、第二气源接口12、呼吸回路13、驱动气体支路14、新鲜气体支路15、通气控制器16。
具体的，输入设备10可以是切换开关，用于切换第一模式和第二模式，还可以是机械旋钮、电子输入设备(触摸屏)或者是控制面板等接收通气控制信息的设备。可以理解的是，本实施例不局限于上述输入设备10。第一气源接口11和第二气源接口12可以接到气瓶或医院的集中供气系统，通过第一气源接口11和第二气源接口12可以接到气瓶或医院的集中供气系统接入氧气和辅助气体。这里，辅助气体可以为空气或笑气等。
驱动气体支路14的一端与第一气源接口11连接，另一端与呼吸回路13连接。医用通气系统在第一模式下，驱动气体支路14通过呼吸回路13向病人133提供呼吸支持，在病人133需要吸气时，驱动气体支路14通过呼吸回路13向病人133输出气体；在病人133需要呼气时，驱动气体支路14和呼吸回路13接收病人133呼出的气体。
新鲜气体支路15的一端与第一气源接口11和第二气源接口12连接，另一端与呼吸回路13连接。医用通气系统在第一模式下，新鲜气体支路15把第一气源接口11和第二气源接口12输出的氧气和辅助气体经麻醉蒸发器153后向呼吸回路13输出含有麻药的新鲜气体，通过呼吸回路13输送至病人133，实现对病人133的麻药供给补充。
通气控制器16，根据输入设备10接收到的第一模式控制信息，控制驱动气体支路14经呼吸回路13为患者提供通气支持，控制新鲜气体支路15向呼吸回路13输出含麻药的新鲜气体。
通气控制器16接收到输入设备10输出的第一模式控制信息，控制该医用通气系统1000进入第一模式。在第一模式下，控制驱动气体支路14经呼吸回路13为患者提供通气支持，控制新鲜气体支路15向呼吸回路13输出含有麻药的新鲜气体，以实现对患者的麻醉。
通气控制器16，根据输入设备10接收到的第二模式控制信息，控制驱动气体支路14向呼吸回路13输出第一气体，控制新鲜气体支路15向呼吸回路13输出第二气体。
通气控制器16接收到输入设备10输出的第二模式控制信息，控制该医用 通气系统1000进入第二模式。在第二模式下，驱动气体支路14可以向呼吸回路13输出第一气源接口11输出的气体，相应地，新鲜气体支路15向呼吸回路13输出至少第一气源接口11或第二气源接口12输出的气体。
在第二模式下，如果通过呼吸回路13输出的气体浓度不需要调节，则新鲜气体支路15可以向呼吸回路13也输出第一气源接口11输出的气体。此时，第一气源接口11接氧气或空气气源。
在第二模式下，如果通过呼吸回路13输出的气体浓度需要调节，则新鲜气体支路15可以向呼吸回路13输出第二气源接口12输出的气体，新鲜气体支路15也可以向呼吸回路13输出第一气源接口11输出气体和第二气源接口12输出气体的混合气体。由于驱动气体支路14和新鲜气体支路15均可以对气体的流速进行调节，因此，输入呼吸回路13的氧气和辅助气体的氧浓度能够实现适应性调节，从而实现对呼吸回路13向病人133输出气体流速和/或供氧浓度的控制。
具体地，呼吸回路13包括呼气支路130和吸气支路131。呼气支路130包括呼气管路1300和设置在呼气管路1300上的呼气单向阀1301。呼气管路1300、呼气单向阀1301以及驱动气体支路14形成供病人133呼出气体排出的呼气通道。吸气支路131包括吸气管路1310、设置在吸气管路1310上的吸气单向阀1311以及吸收罐134。在第一模式下，病人呼气时，呼气支路130和驱动气体支路14接收病人呼出的气体；病人吸气时，通气控制器16控制第一气源接口11输出的气体提供吸气支持压力，将驱动气体支路14、吸气支路131中的呼出气体经吸收罐134过滤，并混合新鲜气体支路15输出的新鲜气体后输送至病人133，为病人133提供吸气支持。吸收罐134设置于吸气通道中，用于吸收由驱动气体支路14排出的呼出气体中的二氧化碳。在本实施例中，吸收罐134设置于驱动气体支路14与吸气单向阀1311之间，其内填充有钠石灰。
可以理解地，在其它一些实施例中，吸收罐134内可填充其它用于过滤二氧化碳的过滤材料，在此不做限制。由于呼吸回路13在工作过程中内部会有湿气存在，尤其在吸收罐134在工作过程中会释放出水，以液体或者气体形式存在，因此，在给氧时，氧气通过呼吸回路13，尤其是吸收罐134的过程中，气体会被加湿，从而起到湿化器的作用。
本申请设计的一种医用通气系统1000，在用户通过输入设备10选择第一模式时，采用通气控制器16控制驱动气体支路14经呼吸回路13为患者提供通气 支持，控制新鲜气体支路15向呼吸回路13输出含麻药的新鲜气体；在用户通过输入设备10选择第二模式时，采用通气控制器16控制驱动气体支路14向呼吸回路13输出第一气源接口11输出的气体，且控制新鲜气体支路15向呼吸回路13输出至少第一气源接口11或第二气源接口12输出的气体。从而实现在保持现有技术医用通气系统的常规麻醉功能下，当选择第二模式时，能够实现高流速给氧功能，不需要改变现有的连管方式，有效降低现有技术高流速给氧设备的复杂性。
在一个可选的实施例中，第一模式控制信息可以包括第一模式选择信息或第一模式通气控制信息中的一个或多个；第二模式控制信息包括第二模式选择信息或第二模式通气控制信息中的一个或多个。
具体地，第一模式选择信息，即选择医用通气系统常规功能的模式选择信息，第二模式信息，即选择医用通气系统高流速给氧功能的模式选择信息；第一模式选择信息和第二模式选择信息均通过用户通过输入设备10输入。
相应地，第一模式通气控制信息可以包括呼吸频率、吸气流速、吸气压力、呼气压力、麻药浓度或潮气量等常规通气参数中的一个或多个，用户可以根据需要进行调节。
第二模式通气控制信息可以包括供气流速和/或供氧浓度。由于第二模式是高流速氧疗模式，因此，通过对供气流速和/或供氧浓度的调节，可以实现向病人133提供高流速给氧。
在一个可选的实施方式中，驱动气体支路14包括驱动主路140，驱动主路140包括顺序连接的第一流量控制器142和贮气装置，以及连接到贮气装置的排出贮气装置中多余气体的呼气阀143。贮气装置可以采用无风箱技术，也可以采用风箱技术。
具体的，如图2所示，在采用无风箱技术时，贮气装置可以是容量交换器141，容量交换器141是一种类似于两端没有硬性隔开的狭长气道，只要通气就能打通；第一流量控制器142可以是比例阀，用于控制进入容量交换器141的氧气或辅助气体的流速；呼气阀143在病人133呼气时，排出容量交换器141中多余的气体，以限制病人133的呼气体压力。
如图3所示，图3为采用容量交换器141，医用通气系统处于第一模式的结构示意图。当通气控制器16接收到输入设备10的第一模式控制信息时，将医 用通气系统的模式切换为第一模式，驱动气体支路14通过呼吸回路13向病人133提供呼吸支持，在病人133需要吸气时，容量交换器141通过呼吸回路13向病人133输出气体；在病人133需要呼气时，容量交换器141和呼吸回路13接收病人133呼出的气体。
并且，在第一模式下，新鲜气体支路15把第一气源接口11和第二气源接口12输出的氧气和辅助气体经麻醉蒸发器153后向呼吸回路13输出含有麻药的新鲜气体，通过呼吸回路13输送至病人133，实现对病人133的麻药供给补充，在病人麻醉之后，可以关闭麻醉蒸发器153，从而实现医用通气系统对病人133的通气支持及低流速给氧支持。
如图4所示，图4为采用容量交换器141，医用通气系统处于第二模式的结构示意图。当通气控制器16接收到输入设备10的第二模式控制信息时，将医用通气系统的模式切换为第二模式，驱动气体支路14可以向呼吸回路13输出第一气源接口11输出的气体，相应地，新鲜气体支路15可以向呼吸回路输出至少第一气源接口11或第二气源接口12输出的气体。
在一个可选的实施方式中，如图5所示，图5为采用风箱技术时，医用通气系统处于第一模式的结构示意图。在第一模式下，通气控制器16控制驱动气体支路14为患者提供通气支持，具体为：风箱144通过呼吸回路13向病人133提供呼吸支持，在病人133需要吸气时，风箱144通过呼吸回路13向病人133输出气体；在病人133需要呼气时，风箱144和呼吸回路13接收病人133呼出的气体。
并且，在第一模式下，新鲜气体支路15把第一气源接口11和第二气源接口12输出的氧气和辅助气体经麻醉蒸发器153后向呼吸回路13输出含有麻药的新鲜气体，通过呼吸回路13输送至病人133，实现对病人133的麻药供给补充和/或给氧支持。
如图6所示，图6为在采用风箱技术时，医用通气系统处于第二模式的结构示意图。风箱144的一端与经第一流量控制器142接第一气源接口11，另一端与呼气支路130及吸气支路131连通，风箱144内设置有折叠囊1441。第一流量控制器142控制经第一气源接口11流入风箱144的驱动气体，驱动气体压缩折叠囊1441。呼气阀143与折叠囊1441连接，排出折叠囊1441内过量气体，对病人133呼出气体的压力进行控制。
在第二模式下，通过驱动气体支路14的贮气旁路145向呼吸回路13输出第一气源接口11输出的气体，相应地，新鲜气体支路15向呼吸回路13输出至少第一气源接口11或第二气源接口12输出的气体。
更具体的，当通气控制器16接收到输入设备10的第二模式控制信息时，将医用通气系统的模式切换为第二模式，关闭风箱144所在的驱动主路140，打开贮气旁路145，经贮气旁路145向呼吸回路13输出第一气源接口11输出的气体；相应地，新鲜气体支路15向呼吸回路13输出至少第一气源接口11或第二气源接口12输出的气体。其中，关闭风箱144所在的驱动主路140或打开贮气旁路145均可以通过驱动主路140或贮气旁路145上的相应阀门进行控制。
在一个可选的实施方式中，具体参阅图2-6，新鲜气体支路15包括第一气体支路150、第二气体支路151和混合支路152，第一气体支路150的一端与第一气源接口11连接，第二气体支路151的一端与第二气源接口12连接，第一气体支路150和第二气体支路151的另一端与混合支路152连接。混合支路152上设有麻醉蒸发器153。
参阅图3及图5，在第一模式下，经第一气体支路150及第二气体支路151输入的新鲜气体经麻醉蒸发器153后输出到呼吸回路13。不管是贮气装置是风箱144还是容量交换器141，在第一模式下，驱动气体支路14通过呼吸回路13向病人133提供呼吸支持，在病人133需要吸气时，驱动气体支路14通过呼吸回路13向病人133输出气体；在病人133需要呼气时，驱动气体支路14和呼吸回路13接收病人133呼出的气体。
新鲜气体支路15中，第一气体支路150的一端与第一气源接口11连接，第二气体支路151的一端与第二气源接口12连接，第一气体支路150和第二气体支路151的另一端与混合支路152连接，在第一模式下，混合支路152把第一气源接口11和第二气源接口12输出的氧气和辅助气体经麻醉蒸发器153蒸发后，向呼吸回路13输出含有麻药的新鲜气体，通过呼吸回路13输送至病人133，实现对病人133的麻药供给补充。
参阅图4和图6，在第二模式下，驱动气体支路14可以向呼吸回路13输出第一气源接口11输出的气体，相应地，第一气体支路150和/或第二气体支路151向呼吸回路13输出至少第一气源接口11或第二气源接口12输出的气体。一种实施方式中，第一气体支路150和/或第二气体支路151出的气体可以经混 合支路152输出至呼吸回路13，此时，麻醉蒸发器153关闭。另一种实施方式下，新鲜气体支路15还包括蒸发器旁路154，第一气体支路150和/或第二气体支路151出的气体也可以经蒸发器旁路154输出至呼吸回路13。
具体的，关闭或开启麻醉蒸发器153及其所在的混合支路152，以及蒸发器旁路154，均可以通过阀门控制实现。
在一个可选的实施方式中，第一气体支路150上设有控制第一气源接口11输入气体流量的第二流量控制器155，第二气体支路151上设有控制第二气源接口12输入气体流量的第三流量控制器156。第二流量控制器155或第三流量控制器156，可以是能实现流量控制的电子流量计或机械流量计。
可以理解的是，还可以在驱动气体支路14、第一气体支路150、第二气体支路151上均设置流量传感器17，呼吸回路13中的呼气支路130上设置呼气流量传感器18，及吸气支路131上设置吸气流量传感器19，用于检测在相应支路上的气体流速。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接。可以是机械连接，也可以是电连接。可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
上文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，上文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定 的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
在本说明书的描述中，参考术语“一个实施方式”、“一些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合实施方式或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
尽管已经示出和描述了本申请的实施方式，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施方式进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (9)

  1. 一种医用通气系统，其特征在于，包括：输入设备、第一气源接口、第二气源接口、呼吸回路、驱动气体支路、新鲜气体支路、通气控制器；所述驱动气体支路的一端与第一气源接口连接，另一端与所述呼吸回路连接；
    所述新鲜气体支路的一端与所述第一气源接口和第二气源接口连接，另一端与呼吸回路连接；
    所述通气控制器，根据所述输入设备接收到的第一模式控制信息，控制驱动气体支路经所述呼吸回路为患者提供通气支持，控制所述新鲜气体支路向所述呼吸回路输出含麻药的新鲜气体；或
    所述通气控制器，根据所述输入设备接收到的第二模式控制信息，控制所述驱动气体支路向所述呼吸回路输出所述第一气源接口输出的气体，控制所述新鲜气体支路向所述呼吸回路输出至少所述第一气源接口或所述第二气源接口输出的气体。
  2. 根据权利要求1所述的医用通气系统，其特征在于，所述第一模式控制信息包括第一模式选择信息或第一模式通气控制信息中的一个或多个；
    所述第二模式控制信息包括第二模式选择信息或第二模式通气控制信息中的一个或多个。
  3. 根据权利要求2所述的医用通气系统，其特征在于，所述第一模式通气控制信息包括呼吸频率、吸气流速、吸气压力、呼气压力、麻药浓度或潮气量中的一个或多个；
    所述第二模式通气控制信息包括供气流速和/或供氧浓度。
  4. 根据权利要求1所述的医用通气系统，其特征在于，所述驱动气体支路包括驱动主路，所述驱动主路包括顺序连接的第一流量控制器和贮气装置，以及连接到所述贮气装置的排出所述贮气装置中多余气体的呼气阀。
  5. 根据权利要求4所述的医用通气系统，其特征在于，所述驱动气体支路还包括贮气旁路，所述通气控制器根据接收到的第二模式控制信息控制所述贮气旁路将第一气源接口输出的第一气体输送至所述呼吸回路。
  6. 根据权利要求1至5所述的医用通气系统，其特征在于，所述新鲜气体支路包括第一气体支路、第二气体支路和混合支路，所述第一气体支路的一端 与第一气源接口连接，所述第二气体支路的一端与所述第二气源接口连接，所述第一气体支路和第二气体支路的另一端与所述混合支路连接；
    所述混合支路上设有麻醉蒸发器；
    在第一模式下，经所述第一气体支路及所述第二气体支路输入的新鲜气体经麻醉蒸发器后输出到呼吸回路；
    在第二模式下，经所述第二气体支路输入到所述混合支路的气体输出到所述呼吸回路。
  7. 根据权利要求6所述的医用通气系统，其特征在于，所述在第二模式下，经所述第二气体支路输入到所述混合支路的气体输出到所述呼吸回路包括：
    在第二模式下，关闭所述麻醉蒸发器。
  8. 根据权利要求6所述的医用通气系统，其特征在于，所述新鲜气体支路还包括蒸发器旁路，所述通气控制器根据接收到的第二模式控制信息控制经所述第二气体支路输入到所述混合支路的气体经所述蒸发器旁路输出到所述呼吸回路。
  9. 根据权利要求6至8中任一项所述的医用通气系统，其特征在于，所述第一气体支路上设有第二流量控制器，且所述第二气体支路上设有第三流量控制器。
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