Gas control method, device, equipment and storage medium

Abstract

The disclosed embodiments relate to a gas control method, device, equipment and storage medium. The control method is used for a target device, the target device provides a first cavity and a second cavity, the first cavity and the second cavity can be connected to an airway cannula respectively; the method comprises: discharging the gas in the first cavity to the airway cannula, and discharging the gas in the second cavity to an external space; replenishing the first cavity with gas, and replenishing the second cavity with gas delivered through the airway cannula. The control method of the disclosed embodiments can achieve effective control of gas inlet and outlet, thereby improving the hemodynamic effect of patients during cardiopulmonary resuscitation.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a gas control method, device, equipment and storage medium. Background Art

[0002] Cardiopulmonary resuscitation (CPR) generally refers to the emergency measures taken when the patient's breathing and heartbeat stop. The main operations of cardiopulmonary resuscitation include chest compression and revocation, which are performed alternately and repeatedly. Among them, the compression operation corresponds to the compression or contraction stage of the chest during cardiopulmonary resuscitation, and the revocation of the compression operation corresponds to the rebound stage of the chest during cardiopulmonary resuscitation. When the chest is compressed, the compression kinetic energy is converted into an increase in intrathoracic pressure, which increases the pressure of the blood vessels in the chest to the same extent. The blood vessels are "compressed", pushing the blood forward and causing it to flow to the arteries with lower pressure outside the chest. The presence of venous valves and arterial valves prevents blood from flowing back, ensuring that blood flows in one direction during compression, providing blood flow to the brain and important organs; at the same time, the airway is in an open state, and the increase in intrathoracic pressure will also increase the transpulmonary pressure, squeeze the lung gas out of the body, consume the time of "compression" of the blood vessels, reduce forward blood flow, affect the success of cardiopulmonary resuscitation, and also lead to an increase in the degree of alveolar damage.

[0003] During the chest rebound phase, due to the elasticity of the chest, the chest that was "squeezed" during the chest compression phase uses the compression kinetic energy stored in it to passively expand. The expansion of the chest creates a negative pressure in the chest relative to the atmospheric pressure, which plays an important role in promoting venous return and increasing the preload of the chest pump. At the same time, due to the opening of the airway, driven by atmospheric pressure, air flows rapidly into the lungs, greatly consuming the power of the negative pressure in the chest for venous return, affecting the success of cardiopulmonary resuscitation. Ventilation is very important during long-term cardiopulmonary resuscitation. It discharges carbon dioxide from the body while supplying oxygen. The amount of gas exchanged each time due to repeated chest compression and rebound phases is lower than the anatomical dead space of the respiratory tract and cannot provide sufficient ventilation. Therefore, positive pressure ventilation is still required during cardiopulmonary resuscitation. The medical devices currently used in the cardiopulmonary resuscitation process cannot effectively control the gas and cannot provide positive pressure ventilation. Even if positive pressure ventilation is performed based on the current medical device structure, the airway pressure during the positive pressure ventilation period is difficult to return to zero, which will increase the intrathoracic pressure, resulting in a decrease in venous return, and reduce cardiac output and coronary perfusion pressure during cardiopulmonary resuscitation. In short, current medical devices will affect the success of resuscitation. Summary of the invention

[0004] In view of this, the embodiments of the present disclosure provide a gas control method, device, equipment and storage medium to solve at least one problem existing in the background technology.

[0005] In a first aspect, an embodiment of the present disclosure provides a gas control method for a target device, wherein the target device provides a first cavity and a second cavity, and the target device can be connected to an airway cannula; the method comprises:

[0006] Expelling the gas in the first cavity into the airway tube, and expelling the gas in the second cavity into the external space;

[0007] The first cavity is replenished with gas, and the second cavity is replenished with gas delivered through the airway tube.

[0008] Optionally, the target device further comprises: an inner tube, a first air inlet and a first air outlet capable of communicating with the first cavity, and a second air inlet and a second air outlet capable of communicating with the second cavity; the inner tube is located inside the airway cannula, the inner tube can communicate with the first air outlet, and an exhaust passage communicating with the second air inlet is formed between the inner tube and the airway cannula;

[0009] The step of discharging the gas in the second cavity to an external space comprises:

[0010] When the first air inlet and the second air inlet are both closed, and the first air outlet and the second air outlet are both opened, the gas in the second cavity is discharged to the external space through the second air outlet;

[0011] The step of replenishing the first cavity with gas comprises:

[0012] When the first air outlet and the second air outlet are both closed, and the first air inlet and the second air inlet are both open, the first cavity is supplemented with gas through the first air inlet. Optionally, the target device includes: a connector of the airway cannula.

[0013] Optionally, replenishing the first cavity with gas includes:

[0014] connecting the first cavity to an external gas source to replenish gas to the first cavity; or,

[0015] The first cavity is communicated with an external space to replenish the first cavity with gas.

[0016] Optionally, the gas in the first cavity includes a gas containing oxygen; and / or, the gas in the second cavity includes exhaled waste gas generated by breathing.

[0017] Optionally, the volumes of the first cavity and the second cavity are variable, and the difference between the maximum volumes of the first cavity and the second cavity is less than or equal to a preset value.

[0018] Optionally, the maximum volumes of the first cavity and the second cavity are variable.

[0019] Optionally, the target device further provides at least one control element, wherein the gas in the first cavity is discharged to the airway tube, and the gas in the second cavity is discharged to the external space, comprising:

[0020] Controlling the control element to be in a first state, when the control element is in the first state, the control element opens the first air outlet and the second air outlet; and closes the first air inlet and the second air inlet;

[0021] The method of replenishing the first cavity with gas and replenishing the second cavity with gas delivered through the airway tube comprises:

[0022] The control element is controlled to be in a second state. When the control element is in the second state, the control element opens the first air inlet and the second air inlet, and closes the first air outlet and the second air outlet.

[0023] Optionally, the control element comprises: a control valve and a valve core; and controlling the control element to be in the second state comprises:

[0024] The control valve is energized so that the control valve generates a driving force for driving the valve core to move from an initial position to a target position; and the control member is controlled to be in a first state, including:

[0025] The control valve is powered off to cancel the driving force generated by the control valve to drive the valve core to move, and the valve core is restored from the target position to the initial position under the action of the elastic member.

[0026] In a second aspect, an embodiment of the present disclosure provides a gas control device for a target device, wherein the target device provides a first cavity and a second cavity, wherein the first cavity and the second cavity can be communicated with an airway cannula, respectively; the control device comprises:

[0027] a first processing module, configured to discharge the gas in the first cavity to the airway tube, and discharge the gas in the second cavity to an external space;

[0028] The second processing module is used to replenish the first cavity with gas and replenish the second cavity with gas delivered through the airway tube.

[0029] Optionally, the first cavity is connected to or closed with the inner tube in the airway cannula, and the second cavity is connected to or closed with the airway cannula; in response to the operation state of the cardiopulmonary resuscitation operation being a pressing operation, the first cavity is connected to the inner tube and closed with the oxygen or fresh air input port, and the fresh oxygen in the first cavity is pressed into the lungs; the connection port between the second cavity and the airway cannula is closed to prevent the outflow of gas in the lungs, and to assist in maintaining the positive pressure of the chest cavity and the lungs during the whole period of the pressing operation, and to provide oxygen to tissues and organs on the basis of increasing the forward blood flow and the flow time; at the same time, the transpulmonary pressure during the pressing operation period is reduced, and the probability of alveolar damage is reduced; at the same time, the second cavity is connected to the ambient air, and the carbon dioxide-containing gas in the second cavity is discharged into the ambient air;

[0030] In response to the operating state of the cardiopulmonary resuscitation operation being to cancel the pressing operation, the first cavity and the inner tube connection port are closed, the second cavity is connected to the airway cannula, and the gas containing carbon dioxide in the lungs is drawn into the second cavity to prevent ambient air and oxygen source gas from flowing into the lungs. During the entire period of chest rebound, the negative pressure in the chest cavity and the lungs is assisted to be maintained. On the basis of assisting in increasing venous return, the carbon dioxide in the body is drawn away from the human body and into the second cavity. At the same time, the first cavity is connected to an oxygen or fresh air source to replenish oxygen for the first cavity.

[0031] The target device is used in conjunction with an airway cannula known to those skilled in the art. When in use, the inner tube is inserted into the airway cannula, so that the first cavity is connected to or closed with the inner tube, and the space between the airway cannula and the inner tube is connected to or closed with the second cavity. After the cardiopulmonary resuscitation period is over, the target device is withdrawn and the original airway cannula can be retained to continue to maintain conventional positive pressure ventilation.

[0032] Optionally, the control device further includes:

[0033] An acquisition module, used to acquire detection information of a detection device;

[0034] A determination module, used to determine the operation status of the cardiopulmonary resuscitation operation according to the detection information;

[0035] The first processing module is used for: in response to the operation state being a pressing operation, discharging the gas in the first cavity into the airway tube, and discharging the gas in the second cavity into an external space;

[0036] The second processing module is used for: in response to the operation state being cancellation of the pressing operation, replenishing the first cavity with gas, and replenishing the second cavity with gas delivered through the airway tube.

[0037] The third aspect of the present disclosure also provides a cardiopulmonary resuscitation system, the cardiopulmonary resuscitation system comprising:

[0038] The gas control device according to the embodiment of the second aspect;

[0039] The detection device is used to detect the cardiopulmonary resuscitation operation to obtain detection information, and send the detection information to the control device.

[0040] A fourth aspect embodiment of the present disclosure provides an electronic device, characterized in that the electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the gas control method described in the first aspect embodiment when executing the computer program.

[0041] A fifth aspect of the present disclosure provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the gas control method described in the first aspect of the present disclosure is implemented.

[0042] In the gas control method provided in the embodiment of the present disclosure, the exhaust and replenishment of gas in the first cavity are performed in two steps at different times, and the exhaust and replenishment of gas in the second cavity are also performed in two different steps, respectively. Therefore, when the first cavity is connected to the airway cannula, the second cavity is not connected to the airway cannula, and when the second cavity is connected to the airway cannula, the first cavity is not connected to the airway cannula, thereby achieving control of the gas flowing through the airway cannula. When the target device is applied to cardiopulmonary resuscitation, it can allow oxygen and / or air to enter the lungs during the chest compression stage, and prevent the outflow of lung gas, thereby assisting in maintaining positive pressure in the chest and lungs throughout the compression operation, and providing oxygen to tissues and organs on the basis of increasing forward blood flow and flow time; at the same time, it reduces the transpulmonary pressure during the compression operation period, and reduces the probability of alveolar damage. It can also prevent oxygen and / or air from entering the lungs while allowing lung gas to outflow during the chest recoil phase, assist in maintaining negative pressure in the chest and lungs throughout the chest recoil phase, and draw carbon dioxide from the body into the second cavity while assisting in increasing venous return, thereby improving the hemodynamic effect of patients during cardiopulmonary resuscitation.

[0043] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The drawings described herein are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the embodiments of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present application and do not constitute an improper limitation on the embodiments of the present disclosure. In the drawings:

[0045] Figure 1a A schematic flow chart of a gas control method in an optional embodiment of the present disclosure is shown;

[0046] Figure 1b A schematic diagram of the structure of a target device is shown;

[0047] Figure 1c A schematic structural diagram of an airway cannula is shown;

[0048] Figure 2 A cross-sectional view of a connector of an airway tube in some optional embodiments of the present disclosure is shown;

[0049] Figure 3 Shows Figure 2 Middle joint and Figure 1c A schematic diagram of a partial structure of a cannula assembly formed after the middle airway cannula is assembled;

[0050] Figure 4 Shows Figure 2 Middle joint and Figure 1c A cross-sectional view of the cannula assembly formed after the middle airway cannula is assembled, when the control member is in a first state;

[0051] Figure 5 Shows Figure 4 The enlarged view of point A in the middle;

[0052] Figure 6 Shows Figure 3 A partial structural cross-sectional view of the cannula assembly when the middle control member is in the second state;

[0053] Figure 7 This shows that the present disclosure is different from Figure 2 A cross-sectional view of a connector for an airway tube in the illustrated embodiment;

[0054] Figure 8 Shows Figure 7 Middle joint and Figure 1c A schematic diagram of a partial structure of a cannula assembly formed after the middle airway cannula is assembled;

[0055] Fig. 9 Shows Figure 7 Middle joint and Figure 1c A cross-sectional view of the cannula assembly formed after the middle airway cannula is assembled, when the control member is in a first state;

[0056] Fig.10 Shows Fig. 9 The enlarged view of point B in the middle;

[0057] Fig.11 Shows Figure 7 A partial structural sectional view of the cannula assembly when the middle control member is in the second state.

[0058] Reference numerals:

[0059] 10, 40, airway intubation;

[0060] 100, connector; 101, 12, first air inlet; 102, 13, first air outlet; 103, 22, second air inlet; 104, 23, second air outlet; 110, main body; 111, base; 111a, accommodating chamber; 112, cylinder; 112a, 11, first cavity; 112b, 21, second cavity; 112c, first through hole; 112d, second through hole; 113, second Shell; 114, connecting part; 115, 30, inner tube; 115a, air inlet channel; 115b, air outlet channel; 116, first shell; 117, subspace; 121, first piston; 122, second piston; 130, control member; 131, control valve; 132, valve core; 133, first part; 134, second part; 150, elastic member; 160, piston connecting rod; 170, sealing member. DETAILED DESCRIPTION

[0061] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the embodiments of the present disclosure can be implemented in various forms and should not be limited by the specific embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding and to fully convey the scope of the embodiments of the present disclosure to those skilled in the art.

[0062] In the following description, a large number of specific details are given to provide a more thorough understanding of the embodiments of the present disclosure. However, it is obvious to those skilled in the art that the embodiments of the present disclosure can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present disclosure, some technical features known in the art are not described; that is, all features of the actual embodiments are not described here, and well-known functions and structures are not described in detail.

[0063] In the accompanying drawings, spatial relationship terms such as "under", "below", "below", "under", "above", "above", etc., may be used here for convenience of description to describe the relationship between an element or feature shown in the figure and other elements or features. It should be understood that in addition to the orientation shown in the figure, the spatial relationship terms are intended to also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is turned over, then the elements or features described as "under other elements" or "under it" or "under it" will be oriented as "on" other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0064] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be a limitation of the embodiments of the present disclosure. When used herein, the singular forms of "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates another way. It should also be understood that the terms "consisting of" and / or "comprising" when used in this specification determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0065] In order to thoroughly understand the embodiments of the present disclosure, detailed steps and detailed structures will be presented in the following description to illustrate the technical solutions of the embodiments of the present disclosure. The preferred embodiments of the embodiments of the present disclosure are described in detail below, but in addition to these detailed descriptions, the embodiments of the present disclosure may also have other implementations.

[0066] Take the airway cannula as an example of the medical device used in cardiopulmonary resuscitation: the airway cannula can provide a channel for gas to enter and exit, but it cannot effectively control the gas in and out. During the chest compression stage, the gas in the lungs will flow out through the airway cannula, making it difficult to maintain positive pressure in the chest and lungs; during the chest rebound stage, the gas in the external space and / or the oxygen source gas will flow into the lungs, affecting venous return and thus affecting the effect of cardiopulmonary resuscitation. In order to achieve control of the gas flowing through the airway cannula, the embodiments of the present disclosure provide a gas control method, device, equipment and storage medium.

[0067] In the disclosed embodiment, the target device can be used in conjunction with an airway cannula known to those skilled in the art. When the target device is connected to the airway cannula, the gas flowing through the airway cannula can be controlled. In addition, the target device and the airway cannula are detachably connected. The detachable connection can not only facilitate matching different airway cannulas with one target device, thereby increasing the scope of application of the target device, but also facilitate the removal of the target device after cardiopulmonary resuscitation is completed, retaining the original airway cannula, and continuing to maintain conventional positive pressure ventilation through the original airway cannula.

[0068] Figure 1a A schematic diagram of a gas control method is shown as an example. Figure 1a As shown, the gas control method of the embodiment of the present disclosure is used for a target device, the target device can provide a first cavity and a second cavity, and the target device can be connected to an airway cannula; the control method comprises the following steps:

[0069] S10, discharging the gas in the first cavity into the airway cannula, and discharging the gas in the second cavity into the external space;

[0070] S20, replenishing the first cavity with gas, and replenishing the second cavity with gas delivered through the airway tube.

[0071] Step S10 and step S20 are two steps performed at different times, and step S10 and step S20 can be performed cyclically. For example, step S10 is performed first, then step S20, and then step S10 and step S20 are performed in sequence again, and so on.

[0072] One compression and one rebound of the chest cavity is recorded as one cardiopulmonary resuscitation frequency, and one execution of step S10 and step S20 is recorded as one control frequency. Then, the control frequency of the control method disclosed in the present invention is equal to the cardiopulmonary resuscitation frequency.

[0073] When executing step S10, it is impossible to replenish gas for the first cavity, nor is it possible to replenish gas delivered through the airway tube for the second cavity. When executing step S20, it is impossible to discharge the gas in the first cavity to the airway tube, nor is it possible to discharge the gas in the second cavity to the external space. In other words, the exhaust and replenishment of gas in the first cavity are performed in two steps at different times, and the exhaust and replenishment of gas in the second cavity are also performed in two different steps, respectively. Then, when the first cavity is connected to the airway tube, the second cavity is not connected to the airway tube, and when the second cavity is connected to the airway tube, the first cavity is not connected to the airway tube, thereby achieving control over the gas flowing through the airway tube.

[0074] When the target device is used for cardiopulmonary resuscitation, the gas in the first cavity is generally an inhaled gas containing oxygen (such as oxygen or air), and / or the gas in the second cavity is generally an exhaled waste gas containing carbon dioxide. By using step S10, the target device can allow oxygen and / or air to enter the lungs (i.e., achieve positive pressure ventilation) and prevent the outflow of pulmonary gas during the chest compression stage, thereby assisting in maintaining positive pressure in the chest and lungs during the entire compression operation, and providing oxygen to tissues and organs on the basis of increasing forward blood flow and flow time; at the same time, the transpulmonary pressure during the compression operation is reduced, reducing the probability of alveolar damage. In addition, during the chest compression stage, the second cavity is connected to the external environment, and the carbon dioxide gas contained in the second cavity can be discharged into the environment. By using step S20, during the chest rebound phase, the target device can also prevent oxygen and / or air from entering the lungs while allowing the lung gas to flow out, assist in maintaining the negative pressure in the chest and lungs during the entire chest rebound phase, and on the basis of assisting in increasing venous return, extract the carbon dioxide in the body from the human body into the second cavity, thereby improving the success rate of cardiopulmonary resuscitation. At the same time, during the chest rebound phase, by controlling the gas, oxygen can also be added to the first cavity for use in the next chest compression phase.

[0075] Without limitation, the gas control method according to the embodiment of the present disclosure may be used in a testing process of a target device.

[0076] The gas control method of the embodiment of the present disclosure is not used for the treatment or diagnosis of diseases.

[0077] In step S10, without limitation, the gas in the first cavity and the second cavity may be compressed to discharge the gas, or the gas in the first cavity and the second cavity may be sucked to replenish the gas.

[0078] The inflow and outflow of the gas in the first cavity and the second cavity can be controlled by a control component. The control component generally includes an electrical component capable of executing control information. The control information includes information for instructing the control component to execute step S10 or step S20.

[0079] Exemplarily, the control element includes a solenoid valve.

[0080] Exemplarily, the target device may be a connector adapted to an airway tube or a cardiopulmonary resuscitation device including the connector, but is not limited thereto.

[0081] Figure 1b The schematic diagram of the structure of the target device when used in conjunction with an airway cannula is shown as an example. Figure 1bIn some optional embodiments, the target device further includes: an inner tube 30, a first air inlet 12 and a first air outlet 13 that can communicate with the first cavity 11, and a second air inlet 22 and a second air outlet 23 that can communicate with the second cavity 21; the inner tube 30 is located in the airway cannula 40, the inner tube 30 can communicate with the first air outlet 13, and an exhaust channel that communicates with the second air inlet 22 is formed between the inner tube 30 and the airway cannula 40. The inner tube 30 is equivalent to dividing the gas channel in the airway cannula 40 into a part in the inner tube 30 and another part in the exhaust channel.

[0082] Step S10 also includes step S11: discharging the gas in the second cavity 21 to the external space through the second air outlet 23. In this step, the first air inlet 12 is in a closed state, and the second air outlet 23 is in an open state, so that the gas in the first cavity 11 is pressed into the inner tube 30 to achieve positive pressure ventilation; and the second air inlet 22 is in a closed state, and the second air outlet 23 is in an open state, so as to ensure that when the second cavity 21 discharges the gas to the external space, the second cavity 21 and the exhaust channel are not connected, and the lung gas does not flow out.

[0083] Step S20 also includes step S21: the first air inlet 12 is in an open state to supplement the first cavity 11 with gas through the first air inlet 12. In this step, the first air outlet 13 is in a closed state to ensure that when the first cavity 11 is supplemented with gas, the first cavity 11 is not connected to the inner tube 30 to maintain the negative pressure in the lungs. The second air outlet 23 is in a closed state, and the second air inlet 22 is in an open state, so that the gas flowing through the exhaust channel is drawn into the second cavity 21.

[0084] The inner tube separates the space inside the airway cannula into an air inlet channel for the inhaled gas to pass through, and an air outlet channel for the exhaled waste gas to pass through. The gas in the first cavity can be delivered to the patient's lungs through the inner tube, and the gas exhaled by the patient can be delivered to the second cavity through the exhaust channel between the inner tube and the airway cannula. The inhaled gas and the exhaled waste gas are transmitted through two different channels, respectively, which makes it convenient to control the respiratory gas delivered to the lungs and the exhaled waste gas discharged from the lungs separately, making it easier to deliver the inhaled gas to the lungs, and the inhaled gas and the exhaled waste gas will not be sucked away before entering the lungs because the inhaled gas and the exhaled waste gas share the same channel, thereby improving the ventilation effect. Moreover, the two channels are also conducive to reducing the risk of the inhaled gas being contaminated due to the exhaled waste gas and the inhaled gas sharing the same channel, causing the risk of lung infection in the patient.

[0085] The number of control elements for controlling the inflow and outflow of gas in the first cavity and the second cavity may be one, two, or more than two. For example, one control element may be configured for each of the first air inlet, the first air outlet, the second air inlet, and the second air outlet. One control element may be used to simultaneously control the inflow and outflow of gas at the first air inlet and the first air outlet, and another control element may be used to simultaneously control the inflow and outflow of gas at the first air inlet and the first air outlet.

[0086] like Figure 1b As shown, the first cavity 11 and the second cavity 21 may be provided by two separate components of the target device. Figure 5 , Figure 6 as well as Fig.10 and Fig.11 In an exemplary embodiment, the first cavity 121 a and the second cavity 121 b may also be formed by dividing the space within an integral component (ie, the first housing 116 ) in the target device.

[0087] For example, Figure 1b As shown, the first air inlet 12 and the first air outlet 13 are opened on the inner wall of the first cavity 11, and the second air inlet 22 and the second air outlet 23 are opened on the inner wall of the second cavity 21. However, it is not limited thereto.

[0088] According to some optional embodiments, step S20 includes: connecting the first cavity with an external gas source to replenish gas in the first cavity; or connecting the first cavity with an external space to replenish gas in the first cavity. That is, the gas in the first cavity can come from the space in the external environment (i.e., air), or from an external gas source such as a respiratory gas source. The external gas source generally includes a bottle body and an oxygen-containing gas located in the bottle body.

[0089] Optionally, the volumes of the first cavity and the second cavity are variable, and the difference between the maximum volumes of the first cavity and the second cavity is less than or equal to a preset value.

[0090] When performing the compression cancellation operation of cardiopulmonary resuscitation, the volume of the first cavity gradually increases to the maximum volume to store the inhaled gas, and the volume of the second space also gradually increases to the maximum volume to store the exhaled waste gas discharged by the patient. It can be understood that the maximum volume of the first cavity is generally equal to the maximum amount of gas that the patient can inhale. The maximum volume of the second cavity is equal to the maximum amount of gas that the patient can exhale. When performing the compression operation, the volume of the first cavity can be gradually reduced to release the inhaled gas to the patient's lungs. Similarly, the volume of the second cavity can be gradually reduced to release the exhaled waste gas to the external environment.

[0091] The volume of the first cavity and the volume of the second cavity are equal or approximately equal, so that the amount of inhaled gas stored in the first cavity and the amount of exhaled waste gas stored in the second cavity can be equal or approximately equal, thereby maintaining a balance between the inhaled gas and the exhaled waste gas entering the patient's lungs, effectively ensuring the safety of the patient's lungs and reducing the risk of lung damage such as alveolar rupture due to pressure imbalance or high pressure in the patient's lungs.

[0092] Optionally, the maximum volumes of the first cavity and the second cavity are variable. The adjustable maximum volumes of the first cavity and the second cavity can meet the needs of different patients, thereby increasing the scope of application of the target device.

[0093] Step S10 also includes step S12: controlling the control element to be in a first state, when the control element is in the first state, the control element opens the first air outlet and the second air outlet; and closes the first air inlet and the second air inlet.

[0094] Step S20 also includes step S22: controlling the control element to be in a second state, when the control element is in the second state, the control element opens the first air inlet and the second air inlet, and closes the first air outlet and the second air outlet.

[0095] In some optional embodiments, the control component includes: a control valve and a valve core; step S22 includes step S221: powering on the control valve so that the control valve generates a driving force to drive the valve core to move from an initial position to a target position; step S12 includes step S121: powering off the control valve to cancel the driving force generated by the control valve to drive the valve core to move, and the valve core returns to the initial position from the target position under the action of the elastic component.

[0096] The movement of the valve core to different positions is achieved by controlling the power on or off of the control valve, and the required closed state or open state can be obtained by the different positions of the valve core.

[0097] For example: when the valve core is in the target position, the first air inlet and the second air inlet are both in an open state, that is, the valve core connects the first cavity and the first air inlet, and connects the second cavity and the second air inlet; the first air outlet and the second air outlet are both in a closed state, that is, the valve core makes the first cavity and the first air outlet in a non-conducting state, and makes the second cavity and the second air outlet in a non-conducting state; when the valve core is in the initial position, the first air outlet and the second air outlet are both in an open state, that is, the valve core connects the first cavity and the first air outlet, and connects the second cavity and the second air outlet; and the first air inlet and the second air inlet are both in a closed state, that is, the valve core makes the first cavity and the first air inlet in a non-conducting state, and the second cavity and the second air inlet are in a non-conducting state.

[0098] An embodiment of the present disclosure also provides a gas control device, which is used for the target device described in any of the above embodiments, and the control device includes: a first processing module and a second processing module, which discharge the gas in the first cavity to the airway tube, and discharge the gas in the second cavity to the external space; the second processing module is used to replenish the first cavity with gas, and replenish the second cavity with gas delivered through the airway tube.

[0099] Optionally, when the control device is used for cardiopulmonary resuscitation, the first processing module is used to: in response to the operating state being a pressing operation, discharge the gas in the first cavity into the airway tube, and discharge the gas in the second cavity into the external space; the second processing module is used to: in response to the operating state being cancellation of the pressing operation, replenish the first cavity with gas, and replenish the second cavity with gas delivered through the airway tube.

[0100] According to some optional embodiments, the first processing module is also used for: when the first air inlet and the second air inlet are both closed, and the first air outlet and the second air outlet are both open, discharging the gas in the second cavity to the external space through the second air outlet; the second processing module is also used for: when the first air outlet and the second air outlet are both closed, and the first air inlet and the second air inlet are both open, replenishing the first cavity with gas through the first air inlet.

[0101] According to some optional embodiments, the second processing module is further used to: connect the first cavity with an external gas source to replenish gas into the first cavity; or connect the first cavity with an external space to replenish gas into the first cavity.

[0102] According to some optional embodiments, the first processing module is also used to: control the control component to be in a first state, when the control component is in the first state, the control component opens the first air outlet and the second air outlet; and closes the first air inlet and the second air inlet; the second processing module is also used to: control the control component to be in a second state, when the control component is in the second state, the control component opens the first air inlet and the second air inlet, and closes the first air outlet and the second air outlet.

[0103] According to some optional embodiments, the second processing module is also used to: supply power to the control valve so that the control valve generates a driving force for driving the valve core to move from an initial position to a target position; the first processing module is also used to: cut off power to the control valve so as to cancel the driving force generated by the control valve to drive the valve core to move, and the valve core returns to the initial position from the target position under the action of the elastic member.

[0104] In some optional embodiments, the control device further includes: an acquisition module and a determination module, wherein the acquisition module is used to acquire detection information of the detection device; and the determination module is used to determine the operating state of the cardiopulmonary resuscitation operation according to the detection information.

[0105] Exemplarily, the determination module is electrically connected to the processing module, and the determination module may also be electrically connected to the first processing module and the second processing module, respectively.

[0106] Without limitation, the detection information may be pressure information. Since the pressure acting on the patient's chest cavity during a pressing operation and during a canceling pressing operation is different, different pressure information may be used to determine whether the current operation is a pressing operation or a canceling pressing operation. The pressure information includes: a pressure value, but is not limited thereto.

[0107] It is understandable that the detection information may also be deformation information representing the amplitude of chest deformation.

[0108] Exemplarily, the detection device includes a sensor, and the detection information can be obtained by using the sensor. Alternatively, the detection device includes an image acquisition component, and the image acquisition component can be used to acquire the detection information. For example, the image acquisition component is used to acquire an image, and then the image features are analyzed to obtain the detection information.

[0109] The detection device includes, but is not limited to: a cardiopulmonary resuscitation feedback device or other device for detecting the compression status.

[0110] The disclosed embodiments also provide a cardiopulmonary resuscitation system, which includes: the gas control device described in the above embodiments and the above detection device, wherein the detection device is used to detect cardiopulmonary resuscitation operations to obtain detection information and send the detection information to the control device.

[0111] The detection device may establish a communication connection with the control device in a wired or wireless manner, so that the detection device sends the detection information to the control device.

[0112] An embodiment of the present disclosure further provides an electronic device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the above-mentioned gas control method when executing the computer program.

[0113] Electronic devices include, but are not limited to: medical devices including cardiopulmonary resuscitation equipment, mobile phones, computers, wearable devices, etc.

[0114] The embodiment of the present disclosure further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned gas control method is implemented.

[0115] Combine the following Figures 2 to 11, further illustrating the target device involved in the control method, apparatus, device and computer-readable storage medium disclosed in the present invention. It can be understood that the target device of the embodiment of the present invention is not limited thereto.

[0116] Figure 1c The schematic diagram of the structure of an airway cannula 10 is shown as an example. The target device is a connector 100 of the airway cannula 10. The connector 100 can be connected to Figure 1c The airway tube 10 shown is used in conjunction with the airway tube 10. Figure 2 Taking the connector 100 of the airway cannula 10 shown in the figure as an example, when cardiopulmonary resuscitation is required for the patient, the Figure 2 The connector 100 shown is Figure 1c The airway tube 10 shown is connected to form Figure 3 and Figure 4 The cannula assembly shown is inserted into the patient's airway for use. After cardiopulmonary resuscitation is successful, for example, after the patient's heartbeat is restored, the connector 100 can be separated from the airway cannula 10, and the airway cannula 10 remains in the patient's body, and the airway cannula 10 is connected to a ventilator. If the patient does not need to use a ventilator, the cannula assembly can also be removed from the patient's airway as a whole.

[0117] like Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, the connector 100 includes: a main body 110 and a control member 130, the main body 110 includes a receiving cavity 111a and at least two through holes communicating with the receiving cavity 111a; the control member 130 is at least partially located in the receiving cavity 111a, and the control member 130 has at least: a first state corresponding to the pressing operation of cardiopulmonary resuscitation (corresponding to the state of step S10), and a second state corresponding to the canceling pressing operation of cardiopulmonary resuscitation (corresponding to the state of step S20); Figure 5 and Fig.10 As shown, the control member 130 is in a first state, and the control member 130 constructs a first channel between at least one through hole and the airway tube 10 for transmitting the inhaled gas to the patient's lungs; Figure 6 and Fig.11 As shown, the control member 130 is in the second state, and the control member 130 constructs a second channel for discharging the exhaled waste gas between the at least one through hole and the airway tube 10 .

[0118] By utilizing the first channel constructed by the control element 130 in the first state, the inhaled gas can be introduced into the patient's lungs during the compression operation of cardiopulmonary resuscitation to ensure the patient's hemodynamic effect, thereby improving the first aid effect. By utilizing the second channel constructed by the control element 130 in the second state, the exhaled waste gas generated by the patient can be discharged when the compression operation of cardiopulmonary resuscitation is cancelled. Moreover, when the control element 130 is in the first state, the first channel is constructed but the second channel is not provided, which can ensure the patient's hemodynamic effect while limiting the discharge of the patient's lung gas, thereby further improving the patient's hemodynamic effect during cardiopulmonary resuscitation.

[0119] The pressing operation can be manual pressing or mechanical pressing with the help of a reciprocating device.

[0120] The accommodating cavity 111a can be used to accommodate the control member 130 and can also be used as a component of the first channel and the second channel, so as to realize multiple uses of one cavity. This structure is conducive to reducing the volume of the connector 100, thereby reducing the interference between the connector 100 and other devices during cardiopulmonary resuscitation. Among them, other devices include but are not limited to defibrillators.

[0121] The through hole corresponding to the first channel constructed by the control member 130 is different from the through hole corresponding to the second channel constructed.

[0122] Usually, the cardiopulmonary resuscitation frequency is 100-120 times / minute. When the chest cavity is pressed down once, the control member 130 switches from the second state to the first state, and when the chest cavity rebounds once, the control member 130 switches from the first state to the second state again. Therefore, one cardiopulmonary resuscitation frequency corresponds to two state switches of the control member 130.

[0123] like Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, according to some optional embodiments, the main body 110 further includes: a first cavity 112a and a second cavity 112b which are communicated with the accommodating cavity 111a, the volumes of the first cavity 112a and the second cavity 112b are variable, and the difference between the maximum volumes of the first cavity and the second cavity is less than or equal to a preset value, the first cavity 112a is used to store the inhaled gas transmitted to the patient's lungs, the second cavity 112b is used to store the exhaled waste gas, and the first cavity 112a and the second cavity 112b are both communicated with the accommodating cavity 111a; Figure 5 and Fig.10 As shown, the control member 130 is in the first state, and the control member 130 also constructs a third channel between at least one through hole and the external space to discharge the inhaled gas in the second cavity 112b; Figure 6 and Fig.11As shown, the control member 130 is in the second state, and the control member 130 further constructs a fourth channel between the at least one through hole and the external gas source for replenishing the suction gas to the first cavity 112a.

[0124] External Gas Source In some embodiments, the control member 130 may construct a fourth channel between the at least one through hole and the external space to supplement the first cavity 112a with inhaled gas. The gas in the external space also contains oxygen, so the gas in the external space may also be used as inhaled gas.

[0125] The preset value may be 0 or a value close to 0. When the preset value is 0, it indicates that the volume of the first cavity 112a is equal to the volume of the second cavity 112b. When the volume difference between the first cavity 112a and the second cavity 112b is less than or equal to the preset value, it indicates that the volume of the first cavity 112a and the volume of the second cavity 112b are equal or approximately equal.

[0126] When the control element 130 is in the first state, the inhaled gas introduced into the patient's lungs comes from the first cavity 112a, and the inhaled gas in the first cavity 112a is replenished by the external external gas source entering the first cavity 112a through the fourth channel when the control element 130 was in the first state last time. When the control element 130 is in the second state, the exhaled waste gas discharged from the patient's lungs first enters the second cavity 112b through the second channel for storage, and then when the control element 130 enters the first state next time, the exhaled waste gas in the second cavity 112b is discharged to the external space through the third channel. Since the volume of the first cavity 112a and the volume of the second cavity 112b are equal or approximately equal, the amount of inhaled gas stored in the first cavity 112a can be equal or approximately equal to the amount of exhaled waste gas stored in the second cavity 112b, so that the inhaled gas and the exhaled waste gas leading to the patient's lungs are balanced, effectively ensuring the safety of the patient's lungs and reducing the risk of lung damage such as alveolar rupture due to pressure imbalance or high pressure in the patient's lungs.

[0127] When performing the compression cancellation operation of cardiopulmonary resuscitation, the volume of the first cavity 112a gradually increases to the maximum volume to store the inhaled gas, and the volume of the second space 112b also gradually increases to the maximum volume to store the exhaled waste gas discharged by the patient. It can be understood that the maximum volume of the first cavity 112a is generally equal to the maximum amount of gas that the patient can inhale. The maximum volume of the second cavity 112b is equal to the maximum amount of gas that the patient can exhale. When performing the compression operation, the volume of the first cavity 112a can be gradually reduced to release the inhaled gas to the patient's lungs, and similarly, the volume of the second cavity 112b can be gradually reduced to release the exhaled waste gas to the external space.

[0128] like Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, according to some optional embodiments, the multiple through holes include: a first air inlet 101, a first air outlet 102, a second air inlet 103 and a second air outlet 104; wherein the first air inlet 101 is used to connect to an external air source, the first air outlet 102 is connected to the air inlet channel 115a of the airway tube 10, the second air inlet 103 is connected to the air outlet channel 115b of the airway tube 10, and the second air outlet 104 is connected to the external space; the cavity wall of the first cavity 112a has a first through hole 112c respectively connected to the accommodating cavity 111a and the first cavity 112a, and the cavity wall of the second cavity 112b has a second through hole 112d respectively connected to the accommodating cavity 111a and the second cavity 112b.

[0129] Optionally, if the inhaled gas comes from an external space, the first air inlet 101 can also be used to communicate with the external space.

[0130] The disclosed embodiment does not use an external air source to directly provide inhaled gas to the patient's lungs, but first passes the inhaled gas from the external air source into the first cavity 112a, and then passes it into the patient's lungs from the first cavity 112a. Such a connector 100 structure can better control the amount of gas passed into the patient's lungs, which can not only reduce the impact of insufficient amount of gas passed into the lungs on the first aid effect, but also reduce the problem of damaging the patient's lungs due to a large amount of gas passed into the lungs.

[0131] refer to Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, the arrow indicates the flow direction of the gas. The following takes one set of pressing operations and canceling pressing operations in cardiopulmonary resuscitation as an example to illustrate the working process of the connector 100 disclosed herein. It can be understood that the processes of all pressing operations and canceling pressing operations in cardiopulmonary resuscitation are the same:

[0132] Without limitation, before performing cardiopulmonary resuscitation, ie, in the initial state, the control element 130 can be placed in the second state so as to introduce inhaled gas into the first cavity 112a, and at this time, no exhaled waste gas exists in the second cavity 112b.

[0133] When the chest of the patient is compressed for the first time, the control element 130 transitions from the second state to the first state, and remains in the first state before the compression operation is cancelled. At this time, the control element 130 connects the first through hole 112c and the first air outlet 102 to construct a first channel between the first cavity 112a and the first air outlet 102. The inhaled gas stored in the first cavity 112a enters the accommodating cavity 111a through the first through hole 112c, and then enters the airway cannula 10 from the accommodating cavity 111a through the first air outlet 102, and finally enters the patient's lungs to achieve ventilation. At the same time, the control component 130 also connects the second via hole 112d and the second air outlet 104 to construct a third channel between the second cavity 112b and the second air outlet 104. The gas in the second cavity 112b can enter the accommodating cavity 111a through the second via hole 112d, and then enter the external space from the accommodating cavity 111a through the second air outlet 104, thereby exhausting the second cavity 112b.

[0134] When the first pressing operation is canceled, the control member 130 transitions from the first state to the second state, and remains in the second state before the next pressing operation. At this time, the control member 130 conducts the first through hole 112c and the first air inlet 101 to construct a fourth channel between the first cavity 112a and the first air inlet 101, and the inhaled gas in the external external air source can enter the accommodating chamber 111a through the first air inlet 101, and then enter the first cavity 112a from the accommodating chamber 111a, so as to replenish the inhaled gas for the first cavity 112a. At the same time, the control member 130 also connects the second through hole 112d and the second air inlet 103 to construct a second channel between the second cavity 112b and the second air inlet 103, and the exhaled waste gas exhaled by the patient enters the second air inlet 103 through the airway cannula 10, and then enters the second cavity 112b from the second air inlet 103 through the accommodating chamber 111a, so as to exhaust the patient's lungs. If the chest compression operation is performed on the patient for the second time, the control element 130 in the first state can discharge the exhaled waste gas stored in the second cavity 112b to the external space through the third channel.

[0135] like Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, according to some optional embodiments, the control member 130 includes: a control valve 131 and a valve core 132, the control valve 131 is connected to the main body 110; the valve core 132 is movably located in the accommodating chamber 111a under the control of the control valve 131; the valve core 132 includes a plurality of first parts 133 distributed at intervals, and a second part 134 located between two adjacent first parts 133, the first part 133 is sealed and connected to the cavity wall of the accommodating chamber 111a, and a ventilation gap is provided between the second part 134 and the cavity wall of the accommodating chamber 111a to construct a ventilation channel.

[0136] The control valve 131 can at least provide a driving force for driving the valve core 132 to move. The control member 130 can be switched between the first state and the second state by moving the valve core 132 at different positions.

[0137] Without limitation, the control valve 131 is a solenoid valve, and the valve core 132 may include a connecting rod. The portion with a larger outer diameter in the connecting rod may serve as the first portion 133, and the portion with a smaller outer diameter may serve as the second portion 134. The first portion 133 with a larger outer diameter may be interference fit with the wall of the accommodating cavity 111a to achieve sealing.

[0138] Gas such as inhaled gas or exhaled waste gas may flow between corresponding through holes and corresponding via holes (including the first via hole 112 c and the second via hole 112 d ) through the ventilation gap.

[0139] like Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, according to some optional embodiments, the control member 130 also includes: an elastic member 150, the two ends of which are respectively connected to the cavity wall of the accommodating cavity 111a and the valve core 132; the control valve 131 is used to provide a force along a preset direction to the valve core 132, and the elastic member 150 is used to provide an elastic restoring force opposite to the preset direction to the valve core 132, and the preset reverse direction and the opposite direction of the preset direction are the moving direction of the valve core 132.

[0140] Without limitation, Figure 5 and Fig.10 As shown, in the initial state, the control member 130 is in the first state, and the elastic member 150 is not deformed. After the control valve 131 provides a driving force to drive the valve core 132 to move in a preset direction, the elastic member 150 is elastically deformed and stores elastic restoring force. After the control valve 131 cancels the driving force, the valve core 132 can be restored to the initial state under the elastic restoring force of the elastic member 150.

[0141] It is understandable that if the joint 100 is not provided with the elastic member 150 , the control valve 131 is required to provide a driving force for the valve core 132 to move in a preset direction and a driving force for the valve core 132 to move in a direction opposite to the preset direction.

[0142] like Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 ,as well as Figures 9 to 11 As shown, according to some optional embodiments, the joint 100 further includes: a first housing 116, a first piston 121 and a second piston 122; the first housing 116 is divided into two sub-spaces 117 ( Figure 5 , Figure 6 and Fig.11 A and B are used to distinguish them, namely 117 (A) and 117 (B) respectively. The first piston 121 is located in one of the subspaces 117 (A), and the first piston 121 and the inner wall of the subspace 117 (A) together form a first cavity 112a; the second piston 122 is located in the other subspace 117 (B), and the second piston 122 and the inner wall of the subspace 117 (B) together form a second cavity 112b; the first piston 121 and the second piston 122 move synchronously with the pressing operation or cancellation of the pressing operation of cardiopulmonary resuscitation.

[0143] The use of the first piston 121 and the second piston 122 can improve the control of the gas in the corresponding cavity and more accurately control the gas volume.

[0144] The power for the movement of the first piston 121 and the second piston 122 comes from the driving force provided by the electric driving mechanism.

[0145] By utilizing the movable function of the first piston 121, the maximum volume of the first cavity 112a can be adjusted without changing the volume of the subspace 117; for example, if the current maximum volume of the first cavity 112a is C1, the maximum distance between the first piston 121 and the bottom wall of the subspace is H1. If the maximum volume of the first cavity 112a needs to be increased to C2, C2>C1, then the maximum distance between the first piston 121 and the bottom wall of the subspace 117 can be adjusted to H2, H2>H1, so that Figure 5 and Fig.10 For example, the first piston 121 is moved upward. Conversely, if the maximum volume C1 of the first cavity 112a needs to be reduced, H1 can be reduced. Similarly, the maximum volume of the second cavity 112b can be adjusted by utilizing the movable function of the second piston 122.

[0146] In addition to using the first piston 121 to move along the inner wall of the first cavity 112a to achieve the variable volume of the first cavity 112a, or using the second piston 122 to move along the inner wall of the second cavity 112b to achieve the variable volume of the second cavity 112b, other methods can also be used to achieve the variable volume of the first cavity 112a and the second cavity 112b. Take the variable volume of the first cavity 112a as an example: the cavity wall forming the first cavity 112a is a flexible material or an elastic material, and the cavity wall of the first cavity 112a is connected to a lifting component that can be lifted. When the control member 130 is in the first state, the gravity of the lifting component or the driving force provided by the power mechanism (such as a motor or a cylinder) can be used to compress the cavity wall of the first cavity 112a to deform, and the suction gas in the first cavity 112a is discharged from the first cavity 112a, and the volume of the first cavity 112a gradually decreases. The control member 130 is in the second state, and the lifting assembly can be lifted by inhaling gas to fill the first cavity 112a, the cavity wall of the first cavity 112a is deformed again, and the volume of the first cavity 112a gradually increases.

[0147] like Figure 8 , Figures 9 to 11 As shown, according to some optional embodiments, the joint 100 further includes: a piston connecting rod 160, and both ends of the piston connecting rod 160 are respectively connected to the first piston 121 and the second piston 122.

[0148] The piston connecting rod 160 can improve the synchronization of the movement of the first piston 121 and the second piston 122 .

[0149] It is understandable that the two piston connecting rods 160 connected to the first piston 121 and the second piston 122 respectively can also be independent, and the two piston connecting rods 160 can be synchronously controlled to achieve synchronous movement of the first piston 121 and the second piston 122. Figure 2 , Figure 4 and Figure 5 As shown, the piston connecting rod 160 may not be provided.

[0150] like Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, according to some optional embodiments, the joint 100 also includes: a seal 170, the seal 170 includes: a first seal 170 respectively sealed to the first piston 121 and the cavity wall of the first cavity 112a, and a second seal 170 respectively sealed to the second piston 122 and the cavity wall of the second cavity 112b.

[0151] The first sealing member 170 is used to ensure the sealing of the first cavity 112a, and the second sealing member 170 is used to ensure the sealing of the second cavity 112b, thereby ensuring ventilation and exhaust effects.

[0152] like Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, according to some optional embodiments, the main body 110 includes: a base 111, a cylinder body 112 and a connecting portion 114, the base 111 has a accommodating cavity 111a and a plurality of through holes; the cylinder body 112 is connected to the base 111, and the cylinder body 112 has a subspace 117; the control member 130 is located between the base 111 and the cylinder body 112; the connecting portion 114 is connected to the base 111, and the connecting portion 114 is detachably connected to the airway tube 10.

[0153] The connecting portion 114 can facilitate the connection or separation of the connector 100 and the airway tube 10 .

[0154] like Figure 5 , Figure 6 , Fig.10 and Fig.11 As shown, according to some optional embodiments, the tops of the two sub-spaces 117 are both open; the main body 110 further includes: a second housing 113, the second housing 113 is connected to the cylinder body 112, and the first piston 121 and the second piston 122 are both located between the second housing 113 and the bottom wall of the corresponding sub-space 117. The second housing 113 covers the opening to reduce dirt such as dust and liquid from the external space from entering the sub-space 117, thereby reducing the influence of dirt on the smoothness of movement of the first piston 121 and the second piston 122.

[0155] Figure 5 , Figure 6 , Fig.10 and Fig.11 As exemplarily shown, the connecting portion 114 is tubular, and the connecting portion 114 can be sleeved on the outside of the airway tube 10 to facilitate the connection or separation of the connecting portion 114 from the airway tube 10 .

[0156] like Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 ,as well as Figures 9 to 11 As shown, according to some optional embodiments, the connector 100 further includes: an inner tube 115, the inner tube 115 is connected to the connecting portion 114 and is at least partially inserted into the airway tube 10, the inner tube 115 defines an air inlet channel 115a for the inhaled gas to pass through, and an air outlet channel 115b for the exhaled waste gas to pass through is defined between the inner tube 115 and the airway tube 10.

[0157] The inner tube 115 divides the space inside the airway tube 10 into an inlet passage 115a for inhaled gas to pass through, and an outlet passage 115b for exhaled waste gas to pass through.

[0158] In some optional embodiments, the control device further includes: a detection module and a determination module, wherein the detection module is used to obtain detection information of the detection device; and the determination module is used to determine the operation state of the cardiopulmonary resuscitation operation according to the detection information.

[0159] Under the premise of no conflict, different embodiments or different technical features of the present disclosure can be arbitrarily combined to form new embodiments.

[0160] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present disclosure and do not limit the scope of protection of the patent of the present disclosure.

Claims

1. A gas control device, characterized in that: A connector for an airway cannula, the connector comprising: a main body, a control member, a first piston and a second piston; The main body comprises: a base, a cylinder body and a connecting part, the base has a containing cavity and a plurality of through holes; the cylinder body is connected to the base, the cylinder body has two sub-spaces, the first piston and the inner wall of one of the sub-spaces together form a first cavity; the second piston and the inner wall of the other sub-space together form a second cavity; the control member is located between the base and the cylinder body; the connecting part is connected to the base, and the connecting part is detachably connected to the airway cannula; The plurality of through holes include: a first air inlet, a first air outlet, a second air inlet, and a second air outlet; wherein the first air inlet is used to connect to an external air source, the first air outlet is connected to an air inlet channel of an airway cannula, the second air inlet is connected to an air outlet channel of the airway cannula, and the second air outlet is connected to an external space; the cavity wall of the first cavity has a first through hole connected to the accommodating cavity and the first cavity respectively, and the cavity wall of the second cavity has a second through hole connected to the accommodating cavity and the second cavity respectively; The control element comprises: a control valve and a valve core, wherein the control valve is connected to the main body; the valve core is movably located in the accommodating cavity under the control of the control valve; the valve core comprises a plurality of first parts distributed at intervals, and a second part located between two adjacent first parts, the first part is sealedly connected to the cavity wall of the accommodating cavity, and a ventilation interval is provided between the second part and the cavity wall of the accommodating cavity to construct a ventilation channel; the control valve provides a driving force to drive the valve core to move; the valve core is moved at different positions to realize the switching of the control element between the first state and the second state; When the control element is in the first state, the valve core conducts the first cavity and the first air outlet, and conducts the second cavity and the second air outlet; and the first air inlet and the second air inlet are both in a closed state, so that the valve core makes the first cavity and the first air inlet in a non-conducting state, and the second cavity and the second air inlet in a non-conducting state; When the control component is in the second state, the valve core connects the first cavity and the first air inlet, and connects the second cavity and the second air inlet; the first air outlet and the second air outlet are both in a closed state, and then the valve core makes the first cavity and the first air outlet in a non-conducting state, and makes the second cavity and the second air outlet in a non-conducting state.

2. A control device according to claim 1, characterized in that: The connector also includes an inner tube, which is located inside the airway cannula, the inner tube forms an air inlet passage, and an air outlet passage is formed between the inner tube and the airway cannula; The first state of the control element corresponds to the compression operation of cardiopulmonary resuscitation, and the gas in the first cavity is delivered to the lungs through the inner tube; The second state of the control element corresponds to the canceling compression operation of cardiopulmonary resuscitation, and the gas exhaled from the lungs enters the second cavity through the air outlet channel.

3. A control device according to claim 1, characterized in that: The volumes of the first cavity and the second cavity are variable, and a difference between the maximum volumes of the first cavity and the second cavity is less than or equal to a preset value.

4. A control device according to claim 1, characterized in that: The maximum volumes of the first cavity and the second cavity are variable.

5. A cardiopulmonary resuscitation system, characterized in that: The cardiopulmonary resuscitation system comprises: the gas control device according to claim 1; The detection device is used to detect the cardiopulmonary resuscitation operation to obtain detection information, and send the detection information to the control device.

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