Gas source control method, controller, equipment and storage medium

Abstract

The invention relates to a gas source control method, a controller, equipment and a storage medium. The method comprises the steps that under the condition that a main gas source supplies gas to the deformable container, the pressure value, collected by a first sensor, of a main gas source connector is obtained, and the internal pressure value, collected by a second sensor, of the deformable container is obtained; wherein the flow of gas flowing from the main gas source to the deformable container is adjusted by the flow adjusting unit; and under the conditions that the pressure value of the main gas source connector is lower than a first pressure threshold value, the internal pressure value of the deformable container is lower than a second pressure threshold value and the flow adjusting unit is in the maximum opening degree, gas source supply of the deformable container is switched from the main gas source connector to the standby gas source connector, so that the standby gas source supplies gas to the deformable container. According to the invention, automatic switching of the gas supply source can be realized, and the continuity of gas supply in the auxiliary ventilation support process is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a gas source control method, controller, device and storage medium. Background Technology

[0002] Cardiopulmonary resuscitation (CPR) is a critical life-saving measure performed on patients with cardiac arrest in the hope of restoring spontaneous circulation. Traditional CPR often relies on bystanders / rescuers manually pressing the chest and performing mouth-to-mouth resuscitation, which is physically demanding and results in inconsistent ventilation quality.

[0003] Currently, assisted ventilation devices can assist or even completely replace cardiopulmonary resuscitation (CPR) through assisted ventilation support. These devices deliver respiratory gases (such as oxygen or air) to the patient's lungs via a breathing circuit, achieving an orderly alternation of inhalation and exhalation during compression cycles. Assisted ventilation devices typically receive direct gas from a primary gas source. When the primary gas source (such as oxygen) is depleted, it needs to be switched to a backup gas source (such as air or another oxygen source) to maintain ventilation support. However, switching gas sources often relies on manual identification of gas source abnormalities and manual operation, which can easily lead to ventilation interruptions, affecting the continuity of ventilation and thus reducing the success rate of resuscitation. Summary of the Invention

[0004] In view of this, embodiments of this application provide a gas source control method, controller, device, and storage medium to solve at least one problem existing in the background art.

[0005] In a first aspect, embodiments of this application provide a gas source control method applied to a gas source module. The gas source module includes a main gas source interface, a backup gas source interface, a first sensor, a second sensor, a flow regulation unit, and a deformable container. Gas flowing into the deformable container is used as breathing gas required for assisted ventilation support. The method includes: When gas is supplied to the deformable container from the main gas source, the pressure value of the main gas source interface collected by the first sensor is obtained, and the internal pressure value of the deformable container collected by the second sensor is obtained; wherein, the gas flow rate from the main gas source to the deformable container is regulated by the flow rate regulation unit. When the pressure value of the main gas source interface is detected to be lower than the first pressure threshold, the internal pressure value of the deformable container is lower than the second pressure threshold, and the flow regulation unit is at its maximum opening, the gas supply to the deformable container is switched from the main gas source interface to the backup gas source interface, so that the backup gas source supplies gas to the deformable container.

[0006] In conjunction with the first aspect, in an alternative embodiment, the method further includes: When the main gas source supplies gas, the opening of the flow regulation unit is adjusted based on the detection information of the internal pressure value of the deformable container to maintain the pressure difference between the internal pressure value of the deformable container and the target pressure value less than a first preset value.

[0007] In conjunction with the first aspect, in an optional embodiment, the gas source module further includes a switching valve, and the method further includes: When the equipment is powered off, the gas pipeline between the backup gas source interface and the deformable container is kept connected by the switch valve. When the flow regulation unit starts supplying gas from the main gas source to the deformable container, the switching valve is controlled to disconnect the gas pipeline between the backup gas source interface and the deformable container.

[0008] In conjunction with the first aspect, in an optional embodiment, the switching valve is a normally open valve, and the step of switching the gas supply to the deformable container from the main gas source interface to the backup gas source interface includes: The output of the flow regulation unit is turned off, and the closing control of the switching valve is released to connect the gas pipeline between the backup gas source interface and the deformable container through the switching valve.

[0009] In conjunction with the first aspect, in an optional embodiment, the gas source module further includes a mechanical pressure protection valve, the mechanical pressure protection valve comprising a first check valve and / or a second check valve disposed in the deformable container; the method further includes: When the first pressure difference is higher than the third pressure threshold, the first one-way valve is automatically opened to discharge the gas in the deformable container, and is automatically closed when the first pressure difference falls back to below or equal to the third pressure threshold. Alternatively, when the second pressure difference is higher than the fourth pressure threshold, the second one-way valve will automatically open to allow external gas to flow into the deformable container, and will automatically close when the second pressure difference drops to below or equal to the fourth pressure threshold. Wherein, the first pressure difference is the difference between the internal pressure value of the deformable container and the external environmental pressure, and the second pressure difference is the difference between the environmental pressure and the internal pressure value of the deformable container.

[0010] In conjunction with the first aspect, in an alternative embodiment, the method further includes: In response to detecting that the pressure value of the main gas source interface is greater than or equal to the fifth pressure threshold, the output of the flow regulation unit is turned on, and the gas pipeline between the deformable container and the backup gas source interface is disconnected, wherein the pressure difference obtained by subtracting the first pressure threshold from the fifth pressure threshold is greater than the second preset value. Alternatively, in response to detecting that the pressure value of the main air source interface is equal to one ambient atmosphere, the backup air source is activated as the supply air source for the deformable container.

[0011] In conjunction with the first aspect, in an alternative embodiment, the method further includes: When the backup gas source is activated as the gas supply source for the deformable container, a status prompt message is output. When the gas supply source for the deformable container is switched from the backup gas source to the main gas source, the status prompt information is canceled.

[0012] In conjunction with the first aspect, in an optional embodiment, the gas flow of the deformable container is directed to the ventilation module. The method further includes: when the main gas source supplies gas to the deformable container, acquiring detection information of intrapulmonary pressure during the ventilation process of the ventilation module, and in response to the intrapulmonary pressure exceeding a preset pressure range, controlling the flow regulating unit to adjust the gas flow from the main gas source to the deformable container, thereby adjusting the gas flow from the deformable container to the ventilation module.

[0013] In conjunction with the first aspect, in an optional embodiment, the main gas source is an oxygen source, and the backup gas source is an air source.

[0014] Secondly, embodiments of this application provide a controller applied to a gas source module, the gas source module including a main gas source interface, a backup gas source interface, a first sensor, a second sensor, a flow regulation unit, and a deformable container, wherein the gas flowing into the deformable container is used as the breathing gas required for auxiliary ventilation support, and the controller is configured to: The controller is configured to perform the gas source control method provided in any of the aforementioned optional embodiments.

[0015] Thirdly, embodiments of this application provide an assisted breathing device, including a controller, an air source module, and a ventilation module; The gas source module includes: a main gas source interface, a backup gas source interface, a first sensor, a second sensor, a flow regulation unit, and a deformable container, wherein the gas flowing into the deformable container is used as the breathing gas required for assisted ventilation support; the ventilation module is used to receive gas from the deformable container to provide ventilation support. The controller is configured to: When gas is supplied to the deformable container from the main gas source, the pressure value of the main gas source interface collected by the first sensor is obtained, and the internal pressure value of the deformable container collected by the second sensor is obtained; wherein, the gas flow rate from the main gas source to the deformable container is regulated by the flow rate regulation unit. When the pressure value of the main gas source interface is detected to be lower than the first pressure threshold, the internal pressure value of the deformable container is lower than the second pressure threshold, and the flow regulation unit is at its maximum opening, the gas supply to the deformable container is switched from the main gas source interface to the backup gas source interface, so that the backup gas source supplies gas to the deformable container.

[0016] In conjunction with the third aspect, in an optional embodiment, the gas source module further includes a mechanical pressure protection valve, which includes a first check valve and / or a second check valve disposed in the deformable container; When the first pressure difference is higher than the third pressure threshold, the first one-way valve automatically opens to discharge the gas in the deformable container, and automatically closes when the first pressure difference falls back to below or equal to the third pressure threshold. Alternatively, when the second pressure difference is higher than the fourth pressure threshold, the second one-way valve automatically opens to allow external gas to flow into the deformable container, and automatically closes when the second pressure difference falls back to below or equal to the fourth pressure threshold. Wherein, the first pressure difference is the difference between the internal pressure value of the deformable container and the external environmental pressure, and the second pressure difference is the difference between the environmental pressure and the internal pressure value of the deformable container.

[0017] In conjunction with the third aspect, in an optional embodiment, the deformable container is provided with an observation port for the user to check whether the deformation state of the deformable container is abnormal.

[0018] Fourthly, embodiments of this application provide an electronic device including a processor, a memory, and an executable program stored in the memory and executable by the processor. When the processor runs the executable program, it performs a gas source control method as provided in any optional embodiment of the first aspect.

[0019] Fifthly, embodiments of this application provide a storage medium having an executable program stored thereon, wherein the executable program, when executed by a processor, implements the gas source control method provided in any optional embodiment of the first aspect.

[0020] The gas source control method, controller, device, and storage medium provided in this application embodiment are applied to a gas source module. The gas source module includes a main gas source interface, a backup gas source interface, a first sensor, a second sensor, a flow regulation unit, and a deformable container. The gas flowing into the deformable container is used as the breathing gas required for assisted ventilation support. By acquiring the pressure value of the main gas source interface collected by the first sensor and the internal pressure value of the deformable container collected by the second sensor when gas is supplied to the deformable container from the main gas source, and by comprehensively judging whether the flow regulation unit is at its maximum opening, the gas source supply can be automatically switched from the main gas source interface to the backup gas source interface when the pressure value of the main gas source interface is lower than a first pressure threshold, the internal pressure value of the deformable container is lower than a second pressure threshold, and the flow regulation unit is at its maximum opening. In addition, since the gas source supply switching mechanism of the deformable container is based on multi-parameter collaborative judgment rather than single-parameter triggering, unnecessary gas source switching is avoided, thereby achieving reliable control of gas source switching. This ensures that when the main gas source fails or the gas supply is insufficient, the system can automatically switch to the backup gas source to supply gas to the deformable container to provide the breathing gas required for assisted ventilation support. This ensures the stability and continuity of gas supply during assisted ventilation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the application environment of a gas source control method according to an embodiment.

[0022] Figure 2 This is a schematic flowchart illustrating a gas source control method according to one embodiment.

[0023] Figure 3 This is a schematic diagram of the controller and gas source module according to one embodiment.

[0024] Figure 4 This is a schematic diagram of the structure of an assisted breathing device according to one embodiment.

[0025] Figure 5 This is a schematic diagram of the structure of an electronic device according to one embodiment. Detailed Implementation

[0026] To make the technical solution and beneficial effects of this application more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0027] The embodiments in this application are not exhaustive, but merely illustrative of some embodiments, and are not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0028] In each embodiment of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0029] In the description of the embodiments of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In related technologies, assisted breathing equipment is usually supplied with air directly by a gas source. When the gas (such as oxygen) of the main gas source is exhausted, it is necessary to switch to a backup gas source (such as air or another oxygen source) to maintain ventilation support. However, the switching of gas sources often relies on manual identification of gas source abnormalities and manual operation of the switching, which can easily cause ventilation interruption, affect the continuity of ventilation, and thus reduce the success rate of resuscitation.

[0031] Figure 1 This is a schematic diagram illustrating the application environment of a gas source control method according to an embodiment, such as... Figure 1 As shown, the gas source module 100 includes a main gas source interface 101, a backup gas source interface 102, a first sensor 103, a second sensor 104, a flow regulation unit 105, and a deformable container 106. The gas flowing into the deformable container 106 is used as the breathing gas required for assisted ventilation. The first sensor 103, the second sensor 104, the flow regulation unit 105, and the switching valve 107 are electrically connected to the controller 201.

[0032] In some examples, the main gas source interface 101 is connected to a main gas source, and the backup gas source interface 102 is connected to a backup gas source. For example, the main gas source can be an oxygen source, such as an oxygen cylinder, to supply oxygen; the backup gas source can be an air source to supply air. Alternatively, both the main gas source and the backup gas source can be oxygen sources, used to supply oxygen respectively.

[0033] In some examples, the backup gas supply interface 102 is connected to the switching valve 107; when the switching valve 107 is in the first state, the gas pipeline between the backup gas supply interface 102 and the deformable container 106 is connected, so that gas is supplied to the deformable container 106 from the backup gas supply; when the switching valve 107 is in the second state, the gas pipeline between the backup gas supply interface 102 and the deformable container 106 is disconnected, so that gas is supplied to the deformable container 106 from the main gas supply. The switching valve 107 can be a solenoid valve or an electric ball valve, etc.

[0034] In some examples, the first sensor 103 is located at the main gas source interface 101 to collect the pressure value at the main gas source interface 101. The second sensor 104 is located on the deformable container 106, for example, on the inner wall of the deformable container 106. The second sensor 104 is located on the inner wall of the deformable container 106 or on the inner wall of a pipeline connected to the deformable container 106 to collect the internal pressure value of the deformable container 106.

[0035] In some examples, the flow regulation unit 105 is connected to the gas pipeline between the main gas source interface 101 and the deformable container 106 to regulate the gas flow rate from the main gas source to the deformable container 106.

[0036] The flow regulating unit 105 can be a fluid control device capable of adjusting the gas flow cross-sectional area. Under the control of the controller 201, the flow regulating unit 105 regulates the gas flow rate into the deformable container 106. As an example, the flow regulating unit 105 is an electromagnetically driven valve element with linear regulation capability, such as a proportional solenoid valve, a servo proportional valve, or a piezoelectrically driven throttle valve.

[0037] In some examples, controller 201 can be a dedicated processing unit deployed inside a ventilator, used to receive sensor data, perform logical judgments, and output control commands. As an example, controller 201 can be a microcontroller unit (MCU), a digital signal processor (DSP), or a system-on-a-chip (SoC) with real-time computing capabilities.

[0038] In some examples, the gas flowing into the deformable container 106 is used as the breathing gas required for assisted ventilation support.

[0039] In some examples, the shape (e.g., volume, form) of the deformable container 106 is determined by the difference between its internal pressure (i.e., internal air pressure) and external pressure (i.e., ambient atmospheric pressure). As an example, the deformable container 106 employs a composite structure with locally rigid and locally elastic components, which can be considered a non-fully elastic airbag. When the internal pressure is greater than the external pressure, the elastic portion of the container expands; when the internal pressure is less than the external pressure, the elastic portion contracts; and when the internal pressure equals the external pressure, the elastic portion remains in its natural state without external force. It should be noted that the term "elastic airbag" in this specification does not refer to a completely elastic airbag, but rather to a composite container structure where local structures have elastic deformation capabilities while the remaining parts are rigidly supported.

[0040] Figure 2 This is a flowchart illustrating a gas source control method according to one embodiment. The gas source control method can be executed by a controller, such as... Figure 2 As shown, the method includes steps S101 to S102.

[0041] S101: When gas is supplied to the deformable container from the main gas source, the pressure value of the main gas source interface collected by the first sensor is obtained, and the internal pressure value of the deformable container collected by the second sensor is obtained.

[0042] The flow rate of gas from the main gas source to the deformable container is regulated by the flow rate regulating unit.

[0043] When gas is supplied to the deformable container from a main gas source, the gas from the main gas source (e.g., an oxygen source) is filtered by a filter, transported through a gas pipeline, and flows into the deformable container under the regulation of a flow control unit.

[0044] When the main gas source is activated, the flow regulation unit can adjust the gas flow rate to the deformable container according to the preset opening value.

[0045] During the main gas supply period, the flow regulation unit can dynamically adjust the gas flow rate from the main gas source to the deformable container based on the current value input by the controller.

[0046] The pressure value at the main gas source interface reflects the gas supply capacity of the main gas source. When the main gas source is supplying gas, as the gas from the main gas source is continuously released, the pressure value at the main gas source interface gradually decreases. When it falls below a certain threshold, it indicates that the gas supply from the main gas source is insufficient.

[0047] A deformable container (such as an elastic gasbag) elastically deforms according to the difference in internal and external pressure. When the internal pressure of the deformable container reaches the target pressure value, the container reaches its target filling state. The internal pressure value of the deformable container is related to the gas input and output rates of the container.

[0048] In this embodiment, both the first sensor and the second sensor are pressure sensors, such as gauge pressure sensors, and their sensing elements can be piezoresistive, capacitive, or resonant structures. The sampling rate of both the first and second sensors for acquiring pressure signals can be set to a fixed sampling rate to collect pressure values ​​in real time.

[0049] S102: When the pressure value of the main gas source interface is detected to be lower than the first pressure threshold, the internal pressure value of the deformable container is lower than the second pressure threshold, and the flow regulation unit is at its maximum opening, the gas source supply of the deformable container is switched from the main gas source interface to the backup gas source interface so that gas is supplied to the deformable container from the backup gas source.

[0050] In some examples, the first pressure threshold is used to determine whether the main gas source is in an effective gas supply state. The first pressure threshold can be set based on the lowest output pressure that the main gas source can maintain under normal gas supply conditions. For example, the first pressure threshold can be set to be lower than or equal to the lowest pressure value of the main gas source interface when the main gas source can supply gas normally. Preferably, the first pressure threshold can be set to be higher than one ambient atmosphere (101.3 kPa).

[0051] In some examples, the second pressure threshold can be used to determine whether the deformable container has reached the minimum effective inflation state required to maintain ventilation. The second pressure threshold can be set based on the internal pressure value of the deformable container when the backup gas source supplies gas. For example, when the backup gas source is an air source, the pressure inside and outside the deformable container is the same when the backup gas source supplies gas to the deformable container (e.g., an elastic airbag). In this case, the second pressure threshold can be set to a pressure value equal to or lower than one ambient atmosphere (e.g., directly using standard atmospheric pressure as the ambient atmosphere). For example, the second pressure threshold can be set to equal to standard atmospheric pressure (101.3 kPa) minus a preset value. The preset value can range from 0 to 10 kPa, but this embodiment is not limited to this.

[0052] In some examples, the pressure value at the main gas source interface being lower than a first pressure threshold may include: the pressure value at the main gas source interface remaining lower than the first pressure threshold for a predetermined time window. The internal pressure value of the deformable container being lower than a second pressure threshold may include: the internal pressure value of the deformable container remaining lower than the second pressure threshold for a predetermined time window; the width of the predetermined time window may be set based on the sampling period of the first pressure sensor (or the second pressure sensor), for example, set to at least three consecutive sampling periods, to reduce misjudgments caused by instantaneous pressure fluctuations collected by the sensor.

[0053] In some examples, before determining whether the pressure value of the main gas source interface is lower than a first pressure threshold and whether the internal pressure value of the deformable container is lower than a second pressure threshold, the method may further include: filtering the pressure value of the main gas source interface and the internal pressure value of the deformable container, for example, by using a moving average filter or an adaptive filter algorithm to suppress noise and transient interference.

[0054] In some examples, the opening degree of the flow regulating unit is proportional to the input current, and the controller can determine whether the flow regulating unit is currently at its maximum opening based on the current value input to the flow regulating unit. For example, the flow regulating unit can be a proportional solenoid valve.

[0055] In this embodiment, when the pressure at the main gas source interface is lower than a first pressure threshold, the pressure inside the elastic airbag is lower than a second pressure threshold, and the flow regulation unit is at its maximum opening, the controller can issue a switching command. The switching command may include a first control command and a second control command. The first control command controls the flow regulation unit to enter a closed state to block gas flow between the main gas source interface and the deformable container. The second control command controls the switching valve to connect the gas pipeline between the backup gas source interface and the deformable container. When switching to supplying gas to the deformable container from the backup gas source, the gas from the backup gas source (e.g., an air source) can flow into the deformable container through a filter and the switching valve.

[0056] This application provides a gas source control method. When gas is supplied to a deformable container from a main gas source, the method acquires the pressure value of the main gas source interface collected by a first sensor, the internal pressure value of the deformable container collected by a second sensor, and combines this with a comprehensive judgment based on whether the flow regulation unit is at its maximum opening. This allows the gas supply to be automatically switched from the main gas source interface to a backup gas source interface when the pressure value of the main gas source interface is lower than a first pressure threshold, the internal pressure value of the deformable container is lower than a second pressure threshold, and the flow regulation unit is at its maximum opening. Since the gas supply switching mechanism for the deformable container is based on multi-parameter collaborative judgment rather than single-parameter triggering, unnecessary gas source switching is avoided. This achieves reliable control of the gas source switching, ensuring that when the main gas source fails or the gas supply is insufficient, the system can automatically switch to the backup gas source to supply gas to the deformable container. Furthermore, during the switching process, gas remains inside the deformable container, ensuring a continuous gas supply. This ensures the stability and continuity of the gas supply during auxiliary ventilation support.

[0057] In some embodiments, the method may further include: When the main gas source supplies gas, the opening of the flow regulation unit is adjusted based on the detection information of the internal pressure value of the deformable container to maintain the pressure difference between the internal pressure value of the deformable container and the target pressure value less than a first preset value.

[0058] In some examples, the range of fluctuation for the target pressure value can be determined based on the target pressure value and a preset allowable deviation. As an example, the target pressure value is determined based on ambient atmospheric pressure; for instance, the target pressure value is equal to one ambient atmosphere.

[0059] In some examples, the pressure deviation between the internal pressure value of the deformable container and the target pressure value can be calculated, and a corresponding opening adjustment command can be generated based on the magnitude and direction of the pressure deviation. For example, when the internal pressure value is lower than the lower limit of the fluctuation range of the target pressure value, the opening of the flow regulation unit can be increased to increase the gas supplied by the main gas source to the deformable container; when the internal pressure value is higher than the upper limit of the fluctuation range of the target pressure value, the opening of the flow regulation unit can be decreased to reduce the gas supply from the main gas source; when the pressure difference between the internal pressure value and the target pressure value is less than a first preset value, the opening of the flow regulation unit can be kept unchanged.

[0060] In this embodiment, when the main gas source supplies gas, the opening of the flow regulation unit is dynamically adjusted by using a closed-loop feedback mechanism based on the real-time collected internal pressure value of the deformable container. This allows for precise and dynamic control of the internal pressure of the deformable container, thereby providing the breathing gas required for assisted ventilation support more stably.

[0061] In some embodiments, the method may further include: When the equipment is powered off, the gas pipeline between the backup gas source interface and the deformable container is kept connected by the switching valve; when the control flow regulation unit starts the main gas source to supply gas to the deformable container, the switching valve is controlled to disconnect the gas pipeline between the backup gas source interface and the deformable container.

[0062] In this embodiment, when an air source is used as a backup air source, the gas pipeline between the air source and the deformable container is kept connected by a switching valve when the equipment is off. This ensures that the air pressure inside and outside the deformable container is equal, forming a natural equilibrium state. This effectively prevents the elastic material of the deformable container from deforming under long-term stress due to excessive internal negative pressure, thus helping to extend the service life of the deformable container. When the equipment is started, the controller, after confirming that the main air source can supply gas, controls the flow regulation unit to start the main air source to supply gas to the deformable container, and simultaneously controls the switching valve to disconnect the gas pipeline between the backup air source and the deformable container. This effectively reduces the large fluctuations in the internal pressure of the deformable container caused by the simultaneous supply of gas from both the main and backup air sources, improving the stability of the gas supply during the ventilation support process.

[0063] In some embodiments, the switching valve is a normally open valve, and switching the gas supply to the deformable container from the main gas source interface to the backup gas source interface may include: The flow regulation unit is shut down to block the gas flow between the main gas source interface and the deformable container, and the control of the switching valve is released to connect the gas pipeline between the backup gas source interface and the deformable container through the switching valve.

[0064] Since the switching valve is a normally open solenoid valve, it can be closed by driving or activating the normally open valve, thereby blocking the flow of gas from the backup gas source to the deformable container; by removing the drive or activator of the normally open valve, the normally open valve automatically resets to the normally open state, thereby allowing the flow of gas from the backup gas source to the deformable container.

[0065] In this embodiment, by closing the flow regulation unit through the controller to block the gas flow between the main gas source interface and the deformable container, and simultaneously releasing the control of the switching valve, the normally open switching valve can be automatically reset to the normally open state to connect the gas pipeline between the backup gas source interface and the deformable container. Thus, when it is necessary to switch the gas supply from the main gas source interface to the backup gas source interface, no additional control signal needs to be applied to the switching valve to achieve automatic connection of the gas pipeline between the backup gas source interface and the deformable container. Furthermore, during the backup gas supply period, since the switching valve automatically resets to the normally open state, its energy consumption can also be reduced.

[0066] In some embodiments, the gas source module further includes a mechanical pressure protection valve, the mechanical pressure protection valve including a first check valve and / or a second check valve disposed in the deformable container; the method may further include: When the first pressure difference is higher than the third pressure threshold, the first one-way valve is automatically opened to discharge the gas in the deformable container, and is automatically closed when the first pressure difference falls back to below or equal to the third pressure threshold. Alternatively, when the second pressure difference is higher than the fourth pressure threshold, the second one-way valve will automatically open to allow external gas to flow into the deformable container, and will automatically close when the second pressure difference drops to below or equal to the fourth pressure threshold. Wherein, the first pressure difference is the difference between the internal pressure value of the deformable container and the external environmental pressure, and the second pressure difference is the difference between the environmental pressure and the internal pressure value of the deformable container.

[0067] In this embodiment, both the first check valve and the second check valve are passive mechanical check valves, which can automatically open or close according to the pressure difference without the need for external control signals.

[0068] The third and fourth pressure thresholds can be flexibly set according to actual applications, and no specific limitations are made here.

[0069] When the first pressure difference between the internal pressure of the deformable container and the ambient pressure is higher than the third pressure threshold, the internal pressure of the deformable container is in a high-pressure state (e.g., high pressure caused by the failure of the flow regulating unit). The first check valve automatically opens under the action of the first pressure difference, allowing excess gas in the deformable container to be discharged into the atmosphere. When the first pressure difference drops back to below or equal to the third pressure threshold, the first check valve automatically closes under the action of its elastic reset mechanism, thereby achieving overpressure protection.

[0070] When the second pressure difference, obtained by subtracting the internal pressure of the deformable container from the ambient pressure, is higher than the fourth pressure threshold, the internal pressure of the deformable container is in a low-pressure state (e.g., due to factors such as interruption of the main air supply or failure of the flow regulation unit). The second check valve automatically opens under the action of the second pressure difference, allowing outside air to flow into the deformable container. When the second pressure difference drops back to below or equal to the fourth pressure threshold, the second check valve automatically closes under the action of its elastic reset mechanism, thereby achieving underpressure protection.

[0071] In this embodiment, since the first and second check valves do not require control by a controller, they can automatically close or open based on the internal pressure state of the deformable container. In this way, in the event of failure or abnormality of electronic components in the gas source module, overpressure protection and / or underpressure protection can be achieved, thereby improving the stability of gas supply during auxiliary ventilation support.

[0072] In some embodiments, the method may further include: In response to detecting that the pressure value of the main gas source interface is greater than or equal to a fifth pressure threshold, the flow regulation unit is controlled to start the main gas source to supply gas to the deformable container and disconnect the gas pipeline between the deformable container and the backup gas source interface, wherein the pressure difference obtained by subtracting the first pressure threshold from the fifth pressure threshold is greater than a second preset value; or, in response to detecting that the pressure value of the main gas source interface is equal to the ambient atmospheric pressure, the backup gas source is activated as the gas supply source for the deformable container.

[0073] If the pressure value of the main gas source interface is greater than or equal to the fifth pressure threshold, and the pressure difference obtained by subtracting the first pressure threshold from the fifth pressure threshold is greater than the second preset value, it indicates that the main gas source has sufficient other gas to supply gas to the deformable container.

[0074] The first pressure threshold can be preset to the minimum pressure value sufficient to support the normal gas supply from the main gas source. By setting a fifth pressure threshold higher than the minimum normal gas supply pressure value, the flow regulation unit can be controlled to start the main gas source to supply gas to the deformable container. This can effectively prevent the main gas source from being quickly depleted and unable to maintain a sufficient supply due to the main gas source's interface pressure approaching the minimum pressure value.

[0075] As an example, the first pressure threshold can be set to a pressure value greater than one ambient atmosphere.

[0076] For example, if the pressure value of the main gas source interface is detected to be equal to the ambient atmospheric pressure when the device is powered on, it indicates that the main gas source is not connected or is in failure (e.g., oxygen is depleted). In this case, the backup gas source is used as the supply gas source for the deformable container, and gas is continuously supplied to the deformable container.

[0077] In this embodiment, by activating the main gas source to supply gas to the deformable container when the main gas source has reliable gas supply capability, and using the backup gas source as the gas supply source for the deformable container when the main gas source is not connected or fails, the stability of gas supply during auxiliary ventilation support can be ensured in the event of an abnormality in the main gas source.

[0078] In some embodiments, the method may further include: When the backup gas source is used as the gas supply source for the deformable container, a status prompt message is output; when the gas supply source for the deformable container is switched from the backup gas source to the main gas source, the output of the status prompt message is canceled.

[0079] Status alerts can be used to indicate to the user that the main gas source has switched to the backup gas source or that the main gas source has run out. These alerts can be displayed as text (e.g., "Oxygen source switched to air source"), as an indicator light color change (e.g., from green to yellow), or as an audible alarm.

[0080] When the pressure value of the main gas source interface is detected to recover to a level greater than or equal to the fifth pressure threshold, the controller determines that the main gas source has recovered its effective gas supply capacity and can switch the backup gas source to the main gas source to supply gas to the deformable container. At this time, the status prompt information is automatically canceled.

[0081] In this embodiment, by outputting status prompts, relevant personnel can promptly perceive the change in gas source and take corresponding measures, such as replacing oxygen cylinders. Once the main gas source resumes stable gas supply, the status prompts are automatically canceled, achieving closed-loop control from abnormal perception, status prompts, recovery confirmation to prompt cancellation. This makes the gas source control process more intelligent and reliable.

[0082] In some embodiments, the gas flow of the deformable container is directed to a ventilation module, and the method further includes: When the main gas source supplies gas to the deformable container, the system acquires information on the intrapulmonary pressure during the ventilation process of the ventilation module. In response to the intrapulmonary pressure exceeding a preset pressure range, the system controls the flow regulation unit to adjust the gas flow rate from the main gas source to the deformable container, thereby regulating the gas flow rate from the deformable container to the ventilation module. The ventilation module receives gas from the deformable container and delivers the gas to the patient's lungs to provide ventilation support.

[0083] In some examples, during ventilation by the ventilation module, the pressure within the patient's lungs can be periodically collected by a miniature pressure sensor implanted near the airway or lungs, or indirectly calculated non-invasively by a differential pressure sensor in the breathing circuit. As an example, the pressure sensor can be positioned on the gas tubing connected to the lungs, close to the lungs.

[0084] Information on intrapulmonary pressure can be used to reflect the actual pressure state within the lungs at any given moment. In some examples, to accurately detect changes in intrapulmonary pressure, the pressure sensor's preset sampling frequency can be greater than or equal to a frequency threshold (e.g., 50 Hz, meaning at least 50 data points are collected per second).

[0085] In some examples, intrapulmonary pressure is used to characterize the forces acting on the lungs during respiration. Intrapulmonary pressure may include plateau pressure and / or positive end-expiratory pressure (PEEP). Plateau pressure is the airway pressure at the end of inspiration; excessively high plateau pressure can cause alveolar overfilling, posing a risk of damage. PEEP is the minimum pressure at the end of expiration; excessively low PEEP can lead to alveolar collapse, impairing gas exchange.

[0086] The preset pressure range can be a safe pressure range pre-set according to the patient's specific situation, such as a pressure range set based on the patient's body size, lung condition and / or historical monitoring data. The pressure range may include an upper limit threshold and a lower limit threshold, or the pressure range may also be a pressure threshold, that is, the upper limit threshold and the lower limit threshold are the same value.

[0087] It is understandable that plateau pressure and positive end-expiratory pressure each have their own corresponding safe pressure range.

[0088] In some examples, the information on intrapulmonary pressure detection includes plateau pressure and / or positive end-expiratory pressure.

[0089] In some examples, when the gas flow from the deformable container to the ventilation module is the primary gas source, the flow rate from the primary gas source to the ventilation module can be reduced by decreasing the opening of the flow regulating unit in response to intrapulmonary pressure exceeding the upper limit of a preset pressure range. This reduces the gas flow rate from the deformable container to the ventilation module. Considering that continued gas supply may exacerbate alveolar overinflation and increase the risk of lung injury when intrapulmonary pressure is excessive, the gas flow rate from the deformable container to the ventilation module is limited. Simultaneously, since the deformable container acts as an intermediate buffer chamber for gas delivery, its output gas flow rate to the ventilation module will also decrease. In this state, the respiratory chamber (i.e., the first chamber) within the ventilation module cannot continuously receive fresh gas, effectively preventing further injection of external gas into the patient's lungs. As the patient releases gas using the expiratory valve in the ventilation module, the intrapulmonary pressure gradually decreases, eventually returning to a safe preset pressure range.

[0090] In some examples, in response to the intrapulmonary pressure falling below the lower limit of a preset pressure range, the opening of the flow regulation unit can be increased to increase the gas flow from the main gas source to the deformable container, thereby increasing the gas flow from the deformable container to the ventilation module.

[0091] In this embodiment, when the intrapulmonary pressure is low, by appropriately increasing the opening of the flow rate regulating unit, the gas flow rate from the deformable container in the gas source module to the breathing chamber (i.e., the first chamber) in the ventilation module can be increased, which can accelerate the replenishment of intrapulmonary gas and promote the intrapulmonary pressure to rise back to the preset pressure range.

[0092] In some examples, the gas flow rate can be adjusted proportionally or in stages according to the degree of deviation between the intrapulmonary pressure and the preset pressure range, so as to smoothly increase the intrapulmonary pressure to the preset pressure range.

[0093] In some examples, to more reliably regulate intrapulmonary pressure, the flow regulation unit can be controlled to adjust the gas flow from the main gas source to the deformable container in response to the detection information of intrapulmonary pressure exceeding a preset pressure range for a preset duration, thereby regulating the gas flow from the deformable container to the ventilation module. This can reduce erroneous regulation caused by instantaneous fluctuations in intrapulmonary pressure.

[0094] Next, combine Figure 3 The gas source control method provided in the embodiments of this application will be further explained.

[0095] like Figure 3 As shown, Figure 3 This is a schematic diagram of the controller and gas source module according to one embodiment. In the gas source module 100, the oxygen source interface P1 is connected to the oxygen source (main gas source), and the air source interface P2 is connected to the air source (backup gas source). The first sensor is pressure chip 1, the second sensor is pressure chip 2, the flow regulation unit is a proportional valve (i.e., a proportional solenoid valve) ITV, the deformable container is an elastic air bladder, and the switching valve is a normally open valve YV1. The controller can be an MCU (microcontroller unit), electrically connected to pressure chip 1, pressure chip 2, and normally open valve YV1 respectively.

[0096] Among them, pressure chip 1 collects the pressure value of the main air source interface and sends it to the MCU, and pressure chip 2 collects the internal pressure value of the elastic airbag and sends it to the MCU.

[0097] In addition, the elastic airbag can be equipped with two mechanically set one-way protection valves, including: one-way valve V1 and one-way valve V2.

[0098] In some embodiments, a gas source control method is provided, which may include: When the machine is off, the normally open valve YV1 is in the normally open state. Air enters the elastic air bag after passing through the filter 2 and the normally open valve YV1, so that the elastic air bag is in a balanced state and the pressure inside and outside the elastic air bag is one atmosphere.

[0099] Upon power-on, if pressure chip 1 detects pressure at oxygen source interface P1, and the pressure is sufficient (e.g., the pressure value at the main gas source interface is greater than or equal to the fifth pressure threshold), the MCU determines that an oxygen source has been connected. The MCU drives or activates the normally open valve YV1 to disconnect the gas pipeline between air source interface P2 and the elastic air bladder. Simultaneously, the MCU controls the proportional valve ITV to open at a set value, allowing oxygen output from oxygen source interface P1 to flow into the elastic air bladder after passing through filter 1 and proportional valve ITV. By inflating the elastic air bladder, a pressure difference is created inside and outside the elastic air bladder, which triggers pressure chip 2 to send feedback on the internal pressure of the elastic air bladder.

[0100] The MCU adjusts the opening of the proportional valve ITV to make the internal pressure of the elastic airbag fluctuate around one ambient atmosphere.

[0101] After a period of use, if the oxygen supply is insufficient, even if the proportional valve ITV is opened to its maximum extent, it will still be unable to maintain the elastic airbag at one atmosphere. In this case, if the pressure value of the oxygen supply interface P1 is lower than the first pressure threshold, the proportional valve ITV is at its maximum opening, and the internal pressure value of the deformable container is lower than the second pressure threshold (for example, if it remains lower than one atmosphere for more than a preset time), then the MCU will determine that the oxygen supply is exhausted.

[0102] When the MCU determines that the oxygen supply is depleted, it closes the proportional valve ITV to block the gas flow between the oxygen supply interface P1 and the elastic air bladder. Simultaneously, it closes the normally open valve YV1 to connect the gas pipeline between the oxygen supply interface P1 and the elastic air bladder, allowing air to flow into the elastic air bladder. This eliminates the pressure difference between the inside and outside of the elastic air bladder, thus switching the gas supply to the elastic air bladder to an air supply. At this time, the MCU will output a status message indicating that the oxygen is depleted and an air supply has been used, requiring the oxygen cylinder to be replaced.

[0103] When the oxygen cylinder is replaced, if the pressure value of the oxygen source interface P1 collected by pressure chip 1 is higher than or equal to the fifth pressure threshold, it will automatically switch back to the oxygen source supply state and simultaneously shut off the air source supply. At this time, the MCU will cancel the output status prompt information.

[0104] If, upon power-on, pressure chip 1 detects pressure at oxygen source interface P1, but the pressure value is lower than the first pressure threshold, the MCU determines that the oxygen source is depleted and starts supplying air. At this time, the MCU prompts that the oxygen source is depleted, the equipment has used air, and prompts to replace the gas cylinder.

[0105] If, upon power-on, pressure chip 1 detects that the pressure at oxygen source interface P1 is one atmosphere, the MCU determines that no oxygen source is connected and directly uses the air source. At this time, the MCU will indicate that the air source is in use.

[0106] In some embodiments, the method may further include: The overpressure and underpressure protection mechanisms of the elastic airbag regulate the gas inside the elastic airbag.

[0107] In the event of pressure control failure, if the internal pressure of the elastic airbag exceeds the high pressure setpoint, the one-way valve V1 will automatically open to release the gas inside the elastic airbag, that is, to release the gas by relying on the elasticity of the elastic airbag. If the internal pressure of the elastic airbag is lower than the low pressure setting, the one-way valve V2 will automatically open to allow external gas to flow into the elastic airbag, that is, air intake is achieved by relying on the elasticity of the elastic airbag.

[0108] In some embodiments, the size of the elastic airbag changes with the internal air pressure. For example, an observation port can be provided so that users can visually judge whether the deformation of the elastic airbag is normal, and then take intervention measures when abnormalities occur.

[0109] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0110] This application embodiment also provides a controller applied to a gas source module, the gas source module including a main gas source interface, a backup gas source interface, a first sensor, a second sensor, a flow regulation unit, and a deformable container, the gas flowing into the deformable container is used as the breathing gas required for auxiliary ventilation support, and the controller is configured to execute the gas source control method provided in any of the foregoing embodiments.

[0111] This application also provides an auxiliary breathing device, including a controller, an air source module, and a ventilation module; The gas source module includes: a main gas source interface, a backup gas source interface, a first sensor, a second sensor, a flow regulation unit, and a deformable container, wherein the gas flowing into the deformable container is used as the breathing gas required for assisted ventilation support; the ventilation module is used to receive gas from the deformable container to provide ventilation support. The controller is configured to: When gas is supplied to the deformable container from the main gas source, the pressure value of the main gas source interface collected by the first sensor is obtained, and the internal pressure value of the deformable container collected by the second sensor is obtained; wherein, the gas flow rate from the main gas source to the deformable container is regulated by the flow rate regulation unit. When the pressure value of the main gas source interface is detected to be lower than the first pressure threshold, the internal pressure value of the deformable container is lower than the second pressure threshold, and the flow regulation unit is at its maximum opening, the gas supply to the deformable container is switched from the main gas source interface to the backup gas source interface, so that the backup gas source supplies gas to the deformable container.

[0112] In some embodiments, the gas source module further includes a mechanical pressure protection valve, which includes a first check valve and / or a second check valve disposed in the deformable container; When the first pressure difference is higher than the third pressure threshold, the first one-way valve automatically opens to discharge the gas in the deformable container, and automatically closes when the first pressure difference falls back to below or equal to the third pressure threshold. Alternatively, when the second pressure difference is higher than the fourth pressure threshold, the second one-way valve automatically opens to allow external gas to flow into the deformable container, and automatically closes when the second pressure difference falls back to below or equal to the fourth pressure threshold. Wherein, the first pressure difference is the difference between the internal pressure value of the deformable container and the external environmental pressure, and the second pressure difference is the difference between the environmental pressure and the internal pressure value of the deformable container.

[0113] In some embodiments, the deformable container is provided with an observation port for users to check whether the deformation state of the deformable container is abnormal.

[0114] In some embodiments, the controller is configured to: When the main gas source supplies gas, the opening of the flow regulation unit is adjusted based on the detection information of the internal pressure value of the deformable container to maintain the pressure difference between the internal pressure value of the deformable container and the target pressure value less than a first preset value.

[0115] In some embodiments, the gas source module further includes a switching valve, the switching valve being configured to: When the device is powered off, the gas pipeline between the backup gas source interface and the deformable container remains connected. Under the control of the controller, the gas pipeline between the backup gas source interface and the deformable container is disconnected.

[0116] In some embodiments, the switching valve is a normally open valve, and the controller is configured to: The flow regulation unit is shut down to block the gas flow between the main gas source interface and the deformable container, and the control of the switching valve is released to connect the gas pipeline between the backup gas source and the deformable container through the switching valve.

[0117] In some embodiments, the controller is further configured to: In response to detecting that the pressure value of the main gas source interface is greater than or equal to the fifth pressure threshold, the flow regulation unit is controlled to start the main gas source to supply gas to the deformable container and disconnect the gas pipeline between the deformable container and the backup gas source interface, wherein the pressure difference obtained by subtracting the first pressure threshold from the fifth pressure threshold is greater than the second preset value. Alternatively, in response to detecting that the pressure value of the main air source interface is equal to one ambient atmosphere, the backup air source is activated as the supply air source for the deformable container.

[0118] In some embodiments, the controller is further configured to: When the backup gas source is activated as the gas supply source for the deformable container, a status prompt message is output. When the gas supply source for the deformable container is switched from the backup gas source to the main gas source, the status prompt information is canceled.

[0119] In some embodiments, the controller is further configured to: When the main gas source supplies gas, the system acquires the detection information of the intrapulmonary pressure, and in response to the intrapulmonary pressure exceeding the preset pressure range, controls the flow regulation unit to adjust the gas flow from the main gas source to the deformable container, so as to adjust the intrapulmonary pressure to the preset pressure range.

[0120] In some embodiments, the main gas source is an oxygen source, and the backup gas source is an air source.

[0121] In some embodiments, the ventilation module may include a first cavity, a second cavity, a tubing assembly, a gas-driven assembly, and a third sensor. The first cavity can be used as a breathing cavity for storing respiratory gases (such as oxygen or air), and the second cavity can be used as an exhaust cavity for storing respiratory waste gases. The controller is connected to the tubing assembly and the gas-driven assembly. The third sensor is used to detect intrapulmonary pressure and send the detected intrapulmonary pressure information to the controller.

[0122] The MCU establishes a communication connection with the pump. When the intrapulmonary pressure is normal (within a preset safe range), in response to the pump's compression action, the controller activates the tubing and gas drive components, allowing respiratory gas to flow from the deformable container through the gas tubing (e.g., Figure 1The gas tubing 110 shown is delivered to the first chamber, and the respiratory waste gas generated in the lungs flows to the second chamber; in response to the pressing and releasing action of the presser, the controller controls the tubing assembly and the gas drive assembly to allow the respiratory gas in the first chamber to flow into the patient's lungs through the airway tube, and the respiratory waste gas in the second chamber to be discharged into the atmosphere, so as to achieve the function of synchronous ventilation.

[0123] The piping assembly may include multiple valves for dynamically switching gas passages, such as a first valve and a second valve. The first valve and the second valve may each be a two-position three-way valve.

[0124] In some examples, the first and second chambers are configured to simultaneously draw in or expel gas, for example, by using cylinders to achieve this.

[0125] In some examples, the gas-driven component can be used to convert electrical signals from the controller into mechanical displacement to drive gas flow in the first chamber and the second chamber. For example, the gas-driven component may include a micromotor or a micropump.

[0126] For example, the gas drive assembly can be configured to be driven by a motor to synchronously drive the pistons in the first cylinder and the second cylinder through a mechanical linkage mechanism, thereby achieving coordinated control of the air extraction or exhaust operations of the first cylinder and the second cylinder.

[0127] In some embodiments, the controller is further configured to: In response to the detected intrapulmonary pressure falling within a preset pressure range, the tubing assembly is controlled to alternately operate in a first state and a second state. In the first state, the tubing assembly connects the deformable container in the gas source module to the first cavity to form an air intake channel, allowing the gas-driven assembly to deliver gas from the deformable container in the gas source module into the first cavity. Simultaneously, the tubing assembly connects the second cavity to the lung to form an exhaust channel, allowing the gas-driven assembly to deliver intrapulmonary gas into the second cavity. In the second state, the tubing assembly connects the first cavity to the lung to form an air intake channel, allowing the gas-driven assembly to introduce gas from the first cavity into the lung. Finally, the tubing assembly connects the second cavity to the external environment to form an exhaust channel, allowing the gas-driven assembly to expel gas from the second cavity to the external environment.

[0128] In some embodiments, the controller is further configured to: in response to the detection information of the intrapulmonary pressure exceeding a preset pressure range, perform a decompression operation or a pressurization operation to adjust the intrapulmonary pressure to the preset pressure range; The decompression operation includes: controlling the first valve to connect the first cavity to the lungs to form a first circulation channel, disconnecting the first cavity from the deformable container in the air source module, and controlling the second valve to selectively connect the second cavity to the lungs or the external environment to form an exhaust channel. Alternatively, the pressurization operation includes: controlling the first valve to selectively connect the first cavity to the lung or a deformable container in the air source module to form the air intake channel, and controlling the second valve to connect the second cavity to the lung to form the second circulation channel, and disconnecting the second cavity from the external environment.

[0129] Thus, by responding to the detection information of intrapulmonary pressure exceeding the preset pressure range, a decompression operation or a pressurization operation is performed to adjust the intrapulmonary pressure to the preset pressure range, thereby achieving timely response to changes in intrapulmonary pressure and reliable regulation of intrapulmonary pressure. This effectively suppresses lung tissue damage caused by excessive or insufficient intrapulmonary pressure during cardiopulmonary resuscitation using assisted breathing equipment, and improves the safety of the ventilation process.

[0130] In some embodiments, the controller is further configured to: The gas-driven assembly is controlled to synchronously drive the gas in the lungs to flow through the first circulation channel to the first cavity and through the first exhaust channel to the second cavity; Alternatively, when the gas driving component drives the gas in the first cavity to be sent back to the lungs through the first circulation channel, it simultaneously drives the gas in the second cavity to be discharged to the external environment through the second exhaust channel. Alternatively, when the gas in the deformable container in the gas source module flows into the first cavity through the first air intake channel, the gas drive component can simultaneously drive the gas in the lungs to flow into the second cavity through the second circulation channel. Alternatively, when the gas driving component drives the gas in the first cavity to flow into the lungs through the second air intake channel, it simultaneously drives the gas in the second cavity to return to the lungs through the second circulation channel.

[0131] Figure 4 This is a schematic diagram of a respiratory assisted device according to one embodiment. The respiratory assisted device includes an MCU, an air supply module 100, and a ventilation module 200. For details regarding the air supply module 100, please refer to... Figure 3 The specific embodiments involved will not be described in detail here.

[0132] like Figure 4As shown, the MCU acts as a controller connected to the motor M (i.e., the gas-driven component), the first valve YV2, the second valve YV3, and the pressure chip 3 (i.e., the second sensor). The pressure chip 3 is used to detect the intrapulmonary pressure in real time and transmit the pressure signal to the MCU. The elastic airbag in the gas source module 100 is connected to the first valve YV2 through the gas pipeline 110.

[0133] Based on the intrapulmonary pressure and a preset pressure range, the MCU controls the operation of the first valve YV2 and the second valve YV3, and simultaneously controls the motor M to drive cylinder 1 (i.e., the first chamber) and cylinder 2 (i.e., the second chamber) to adjust the intrapulmonary pressure to the preset pressure range.

[0134] For example, when the intrapulmonary pressure exceeds the upper limit of a preset pressure range, a decompression operation is initiated. The MCU controls YV2 to remain stationary, ensuring that cylinder 1 is only connected to the lungs (i.e., disconnecting cylinder 1 from the elastic air bladder), forming a closed circulation channel. In this state, the control motor M drives the piston in cylinder 1 to reciprocate: when the piston slides away from the lungs, gas is drawn from the lungs into cylinder 1; when the piston slides towards the lungs, the gas in cylinder 1 is forced back into the lungs. This process achieves partial circulation of gas within the lungs without introducing fresh external gas. Simultaneously, the control YV3 switches the circulation according to a preset sequence. When the piston of cylinder 2 slides away from the lungs, YV3 connects the lungs and cylinder 2, drawing gas from the lungs into cylinder 2; when the piston slides towards the lungs, YV3 switches its operating state, connecting cylinder 2 to the external atmosphere, thereby expelling the gas in cylinder 2 to the external environment. By using cylinder 1 to maintain partial gas circulation in the lungs and cylinder 2 to continuously expel gas, the total volume of air in the lungs gradually decreases, and the pressure in the lungs decreases accordingly. In this way, the pressure in the lungs is gradually reduced. When the pressure in the lungs is detected to have fallen back to the preset pressure range, the MCU cancels the overpressure warning and ends the decompression operation.

[0135] For example, when the intrapulmonary pressure is detected to be lower than the lower limit of a preset pressure range, a pressurization operation is initiated. The MCU controls YV2 to switch pathways according to a preset timing sequence. When the piston of cylinder 1 slides away from the lungs, YV2 connects the deformable container in the gas source module with cylinder 1, drawing gas from the deformable container in the gas source module into cylinder 1. When the piston slides closer to the lungs, YV2 switches the connection between cylinder 1 and the lungs, pushing the gas in cylinder 1 into the lungs. Simultaneously, YV3 is controlled to remain unchanged, forming a closed loop channel only between the lungs and cylinder 2. The motor M is controlled to drive the piston of cylinder 2 to reciprocate: when the piston slides away from the lungs, gas is drawn from the lungs into cylinder 2; when the piston slides closer to the lungs, the gas in cylinder 2 is pushed back into the lungs. This process realizes the circulation of exhaled gas from the lungs without expelling gas into the external environment. By maintaining partial gas circulation in the lungs with cylinder 2 and continuously intake air with cylinder 1, the total air volume in the lungs gradually increases, and the pressure in the lungs increases accordingly. In this way, the pressure in the lungs is gradually increased. When the pressure in the lungs is detected to have increased to the preset pressure range, the MCU cancels the output of the low pressure warning and ends the pressurization operation.

[0136] like Figure 5 As shown, this application embodiment also provides an electronic device, including a processor, a memory, and an executable program stored in the memory and capable of being run by the processor. When the processor runs the executable program, it performs the steps of the gas source control method provided in any of the foregoing embodiments.

[0137] This application also provides a computer-readable storage medium storing an executable program thereon, which, when executed by a processor, implements the steps of the gas source control method provided in any of the foregoing embodiments.

[0138] For ease of understanding, the following focuses on explaining the terminology used in this embodiment: In this application embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a Graphics Processing Unit (GPU) (which can be understood as a type of microprocessor), or a Digital Signal Processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconstructable. For example, the processor is a hardware circuit implemented using an Application-Specific Integrated Circuit (ASIC) or a Programmable Logic Device (PLD), such as an FPGA. In a reconstructable hardware circuit, the processor loads a configuration document, implementing a cyclical process of hardware circuit configuration. This can be understood as the processor loading instructions to implement the functions of some or all of the above units or modules in a cyclical process. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), a Deep Learning Processing Unit (DPU), etc.

[0139] The computer-readable storage medium provided in this embodiment can execute the gas source control method of the above embodiment. Its implementation principle and technical effect are similar to those of the above embodiment, and will not be repeated here.

[0140] The aforementioned computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0141] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in an electronic device or a host device.

[0142] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0143] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0144] In the description of this specification, references to "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A gas source control method characterized by, The method is applied to a gas source module, the gas source module comprising a main gas source interface, a backup gas source interface, a first sensor, a second sensor, a flow regulating unit and a deformable container, gas flowing into the deformable container is used as breathing gas required for auxiliary ventilation support, the method comprising: In the case of supplying gas to the deformable container by the main gas source, acquiring the pressure value of the main gas source interface collected by the first sensor and acquiring the internal pressure value of the deformable container collected by the second sensor; wherein the gas flow from the main gas source to the deformable container is regulated by the flow regulating unit; In the case of detecting that the pressure value of the main gas source interface is lower than a first pressure threshold value, the internal pressure value of the deformable container is lower than a second pressure threshold value, and the flow regulating unit is at the maximum opening, switching the gas source supply of the deformable container from the main gas source interface to the backup gas source interface to supply gas to the deformable container by the backup gas source.

2. The gas supply control method of claim 1, wherein, The method further comprises: In the case of supplying gas by the main gas source, based on the detection information of the internal pressure value of the deformable container, adjusting the opening of the flow regulating unit to maintain the pressure difference between the internal pressure value of the deformable container and the target pressure value less than a first preset value.

3. The gas supply control method of claim 1, wherein, The gas source module further comprises a switch valve, and the method further comprises: In the device shutdown state, the gas pipeline between the backup gas source interface and the deformable container is kept communicated by the switch valve; When the flow regulating unit is controlled to start the gas supply of the deformable container by the main gas source, the switch valve is controlled to disconnect the gas pipeline between the backup gas source interface and the deformable container.

4. The gas supply control method of claim 3, wherein, The switch valve is a normally open valve, and the switching of the gas source supply of the deformable container from the main gas source interface to the backup gas source interface comprises: Closing the flow regulating unit to block the gas flow between the main gas source interface and the deformable container, and releasing the control of the switch valve to communicate the gas pipeline between the backup gas source interface and the deformable container through the switch valve.

5. The gas supply control method of claim 1, wherein, The gas source module further comprises a mechanical pressure protection valve, the mechanical pressure protection valve comprising a first one-way valve and / or a second one-way valve arranged in the deformable container; the method further comprises: When the first pressure difference is higher than a third pressure threshold value, the first one-way valve is automatically opened to discharge the gas in the deformable container until the first pressure difference falls below or equal to the third pressure threshold value and is automatically closed; Or, when the second pressure difference is higher than a fourth pressure threshold value, the second one-way valve is automatically opened to make external gas flow into the deformable container until the second pressure difference falls below or equal to the fourth pressure threshold value and is automatically closed; Wherein, the first pressure difference is the difference between the internal pressure value of the deformable container and the external environment pressure, and the second pressure difference is the difference between the environment pressure and the internal pressure value of the deformable container.

6. The gas supply control method according to any one of claims 1 to 5, wherein The method further comprises: in response to detecting that the pressure value of the primary gas source interface is greater than or equal to a fifth pressure threshold, controlling the flow regulating unit to start the gas supply from the primary gas source to the deformable container and disconnect the gas pipeline between the deformable container and the backup gas source interface, wherein the pressure difference between the fifth pressure threshold and the first pressure threshold is greater than a second preset value; alternatively, in response to detecting that the pressure value of the primary gas source interface is equal to an ambient atmospheric pressure, enabling the backup gas source as the supply gas source of the deformable container.

7. The gas supply control method of claim 6, wherein, The method further comprises: in the case of enabling the backup gas source as the supply gas source of the deformable container, outputting state prompt information; in the case of switching the supply gas source of the deformable container from the backup gas source to the primary gas source, canceling the output of the state prompt information.

8. The gas supply control method of claim 1, wherein, The gas from the deformable container flows to a ventilation module, and the method further comprises: in the case of the primary gas source supplying gas to the deformable container, acquiring detection information of the intrapulmonary pressure in the ventilation process of the ventilation module, and in response to the intrapulmonary pressure exceeding a preset pressure range, controlling the flow regulating unit to regulate the gas flow from the primary gas source to the deformable container, so as to regulate the gas flow from the deformable container to the ventilation module.

9. A controller characterized by comprising: Applied to a gas source module, the gas source module comprises a primary gas source interface, a backup gas source interface, a first sensor, a second sensor, a flow regulating unit, and a deformable container, and the gas flowing into the deformable container is used as the required respiratory gas for auxiliary ventilation support. The controller is configured to perform the gas source control method of any one of claims 1 to 8.

10. A breathing assistance apparatus comprising: Comprising a controller, a gas source module, and a ventilation module; The gas source module comprises a primary gas source interface, a backup gas source interface, a first sensor, a second sensor, a flow regulating unit, and a deformable container, wherein the gas flowing into the deformable container is used as the required respiratory gas for auxiliary ventilation support; and the ventilation module is used to receive the gas from the deformable container to provide ventilation support. The controller is configured to: in the case of the primary gas source supplying gas to the deformable container, acquiring the pressure value of the primary gas source interface collected by the first sensor and acquiring the internal pressure value of the deformable container collected by the second sensor; wherein the gas flow from the primary gas source to the deformable container is regulated by the flow regulating unit; in the case of detecting that the pressure value of the primary gas source interface is lower than a first pressure threshold, the internal pressure value of the deformable container is lower than a second pressure threshold, and the flow regulating unit is at a maximum opening, switching the gas source of the deformable container from the primary gas source interface to the backup gas source interface to supply gas to the deformable container by the backup gas source.

11. Breathing assistance device according to claim 10, characterized in that The gas source module further comprises a mechanical pressure protection valve, and the mechanical pressure protection valve comprises a first one-way valve and / or a second one-way valve arranged on the deformable container; when the first pressure difference is higher than a third pressure threshold, the first one-way valve is automatically opened to discharge gas in the deformable container until the first pressure difference falls below or equal to the third pressure threshold, and the first one-way valve is automatically closed; or when the second pressure difference is higher than a fourth pressure threshold, the second one-way valve is automatically opened to allow external gas to flow into the deformable container until the second pressure difference falls below or equal to the fourth pressure threshold, and the second one-way valve is automatically closed; wherein the first pressure difference is the difference between the internal pressure of the deformable container and the external ambient pressure, and the second pressure difference is the difference between the ambient pressure and the internal pressure of the deformable container.

12. Breathing assistance device according to claim 10 or 11, characterized in that The deformable container is provided with an observation port for a user to check whether the deformation state of the deformable container is abnormal.

13. An electronic device, comprising: A computer program product, comprising a processor, a memory, and an executable program stored on the memory and capable of being run by the processor, wherein the processor runs the executable program to perform the gas source control method according to any one of claims 1 to 8.

14. A storage medium, characterized by A computer readable storage medium having stored thereon an executable program, wherein the executable program is executed by a processor to implement the gas source control method according to any one of claims 1 to 8.

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