Ventilation equipment, control method thereof and computer storage medium

Abstract

The invention discloses a ventilation device (200), a control method of the ventilation device (200) and a computer storage medium. The ventilation device (200) comprises a driving module (201), a breathing circuit (202) and a ventilation control module (203). The ventilation control module (203) controls the driving module (201) to provide ventilation support for a patient through the breathing circuit (202); the breathing circuit (202) comprises an inspiration branch (2021) and an expiration branch (2022); the inspiration branch (2021) is provided with an inspiration valve, and the expiration branch (2022) is provided with an expiration valve; when the ventilation control module (203) is in a double-tube oxygen therapy mode, the exhalation valve is controlled to be closed, the inhalation valve is controlled to be opened, and oxygen-enriched gas is output through the inhalation branch (2021).

Description

[0001] Description of the case

[0002] This application is a divisional application of the PCT international patent application PCT / CN2018 / 125064 with an application date of December 28, 2018, which entered the Chinese national phase with Chinese patent application No. 201880099223.4 and the invention name “A ventilation device and its control method, computer storage medium”. Technical Field

[0003] The present application relates to the field of medical devices, and relates to but is not limited to a ventilation device and a control method thereof, and a computer storage medium. Background Art

[0004] Oxygen therapy is a widely used medical method as a sequential treatment method. The so-called sequential treatment is a treatment method in which patients go from invasive ventilation to non-invasive ventilation or oxygen therapy after extubation. At present, invasive ventilation uses double-tube ventilation. Therefore, when patients enter oxygen therapy after being taken off the machine, they need to replace the double tube with a single tube. This not only increases the operation of medical staff, but also increases the risk of infection for patients and the cost of replacing the tube. Summary of the invention

[0005] In view of this, the embodiments of the present application hope to provide a ventilation device and a control method thereof, and a computer storage medium, which solves the problem in the prior art that when a ventilation device with a double-tube expiratory circuit is used to perform oxygen therapy on an offline patient, double-tube oxygen therapy can be achieved without replacing the pipeline, thereby reducing the operation of medical staff and reducing the patient's infection risk and the cost of replacing the pipeline.

[0006] The technical solution of the embodiment of the present application is implemented as follows:

[0007] An embodiment of the present application provides a ventilation device, which includes: a driving module, a breathing circuit and a ventilation control module; wherein the ventilation control module controls the driving module to provide ventilation support to the patient through the breathing circuit; the breathing circuit includes an inhalation branch and an expiratory branch; the inhalation branch is provided with an inhalation valve, and the expiratory branch is provided with an expiratory valve; when the ventilation control module is in a double-tube oxygen therapy mode, the expiratory valve is controlled to be closed and the inhalation valve to be opened, and oxygen-rich gas is output through the inhalation branch.

[0008] The breathing circuit also includes at least one of a pressure measuring module arranged in the inspiratory branch and / or the expiratory branch, and a flow rate measuring module arranged in the expiratory branch, wherein the pressure measuring module is used to detect the pressure in the inspiratory branch and / or the expiratory branch; and the flow rate measuring module is used to detect the gas flow rate in the expiratory branch.

[0009] In the above scheme, the pressure measurement module is at least arranged in the expiratory branch. During oxygen therapy, when the pressure measurement module detects that the third pressure of the expiratory branch is greater than the first pressure threshold, the ventilation control module opens the expiratory valve to keep the pressure of the expiratory branch less than or equal to the first pressure threshold.

[0010] In the above solution, the ventilation device further includes an alarm module and an output module, wherein:

[0011] The alarm module is used to send an alarm message to the output module when the third pressure of the expiratory branch detected by the pressure measurement module is greater than the second pressure threshold;

[0012] The output module is used to output the alarm information after receiving the alarm information sent by the alarm module.

[0013] In the above scheme, the ventilation control module outputs oxygen-rich gas to the patient through the inspiratory branch when in the single-tube oxygen therapy mode.

[0014] In the above scheme, the ventilation device also includes a processing module;

[0015] The processing module determines whether the current oxygen therapy mode is a double-tube oxygen therapy mode or a single-tube oxygen therapy mode according to the pressure change of the exhalation branch detected by the pressure measurement module and / or the flow rate change of the exhalation branch detected by the flow rate measurement module when the exhalation valve is opened and closed.

[0016] In the above solution, the pressure measuring module detects a first pressure of the exhalation branch, and obtains a second pressure of the exhalation branch detected by the pressure measuring module when the exhalation valve is closed;

[0017] If a first change between the first pressure and the second pressure satisfies a first preset condition, the processor determines that the oxygen therapy mode currently in which the ventilation device is in is a double-tube oxygen therapy mode;

[0018] If the first change amount does not meet the first preset condition, the processor determines that the oxygen therapy mode currently in which the ventilation device is in is a single-tube oxygen therapy mode.

[0019] In the above scheme, the processing module obtains the first flow rate of the exhalation branch detected by the flow rate measurement module when the exhalation valve is opened and the second flow rate of the exhalation branch detected by the flow rate measurement module when the exhalation valve is closed;

[0020] If a second change between the first flow rate and the second flow rate satisfies a second preset condition, the processor determines that the oxygen therapy mode currently in which the ventilation device is in is a double-tube oxygen therapy mode;

[0021] If the second change amount does not meet the second preset condition, the processor determines that the oxygen therapy mode currently in which the ventilation device is in is a single-tube oxygen therapy mode.

[0022] In the above solution, if the first change amount satisfies the first preset condition, or the second change amount satisfies the second preset condition, the processor determines that the oxygen therapy mode currently in which the ventilation device is in is a double-tube oxygen therapy mode;

[0023] If the first change amount does not satisfy the first preset condition, and the second change amount does not satisfy the second preset condition, the processor determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

[0024] In the above solution, the output module is used to output and display the oxygen therapy mode currently in which the ventilation device is located.

[0025] The present application embodiment further provides a control method for a ventilation device, which is applied to the ventilation device, wherein the ventilation device at least includes: a receiving module, a driving module, a breathing circuit and a ventilation control module, and is characterized in that the method includes:

[0026] The receiving module receives an instruction to start the oxygen therapy mode;

[0027] When the received instruction to start the oxygen therapy mode is to start the double-tube oxygen therapy mode, the ventilation control module controls the exhalation valve of the ventilation device to close, and controls the inhalation valve of the ventilation device to open, so as to control the driving module to output oxygen-rich gas through the inhalation branch in the breathing circuit.

[0028] In the above solution, the ventilation device further includes a processing module, characterized in that after the receiving module receives the instruction to start the oxygen therapy mode, the method further includes:

[0029] The ventilation control module controls the exhalation valve to open, and the processing module obtains a first oxygen therapy parameter of the ventilation device;

[0030] The ventilation control module controls the exhalation valve of the ventilation device to close, and the processing module obtains a second oxygen therapy parameter of the ventilation device;

[0031] The processing module determines the current oxygen therapy mode of the ventilation device according to the first oxygen therapy parameter and the second oxygen therapy parameter.

[0032] In the above solution, the first oxygen therapy parameter includes a first pressure of the inspiratory branch or the expiratory branch, and the second oxygen therapy parameter includes a second pressure of the inspiratory branch or the expiratory branch. Correspondingly, the processing module determines the oxygen therapy mode currently in which the ventilation device is located according to the first oxygen therapy parameter and the second oxygen therapy parameter, including:

[0033] If a first change between the first pressure and the second pressure satisfies a first preset condition, the processing module determines that the oxygen therapy mode currently in which the ventilation device is in is a double-tube oxygen therapy mode;

[0034] If the first change amount does not meet the first preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

[0035] In the above solution, the first oxygen therapy parameter includes a first flow rate of the expiratory limb, and the second oxygen therapy parameter includes a second flow rate of the expiratory limb. Correspondingly, the processing module determines the oxygen therapy mode currently in which the ventilation device is located according to the first oxygen therapy parameter and the second oxygen therapy parameter, including:

[0036] If a second change between the first flow rate and the second flow rate satisfies a second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode;

[0037] If the second change amount does not meet the second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

[0038] In the above solution, the first oxygen therapy parameter includes a first pressure of the inspiratory branch or the expiratory branch and a first flow rate of the expiratory branch, and the second oxygen therapy parameter includes a second pressure of the inspiratory branch or the expiratory branch and a second flow rate of the expiratory branch. Correspondingly, the processing module determines the oxygen therapy mode currently in which the ventilation device is located according to the first oxygen therapy parameter and the second oxygen therapy parameter, including:

[0039] If a first change between the first pressure and the second pressure satisfies a first preset condition, or a second change between the first flow rate and the second flow rate satisfies a second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode;

[0040] If the first change amount does not satisfy a first preset condition, and the second change amount does not satisfy a second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

[0041] In the above solution, if the oxygen therapy mode currently in which the ventilation device is in is the double-tube oxygen therapy mode, after the ventilation control module controls the exhalation valve of the ventilation device to be closed, the method further includes:

[0042] The processing module obtains a current third pressure of the ventilation device;

[0043] If the third pressure is greater than the first pressure threshold, the ventilation control module controls the exhalation valve to open, so as to keep the pressure of the exhalation branch of the ventilation device less than or equal to the first pressure threshold.

[0044] In the above solution, the ventilation device further includes an alarm module and an output module, and is characterized in that the method further includes:

[0045] When the third pressure of the expiratory branch detected by the pressure measurement module is greater than the second pressure threshold, the alarm module sends an alarm message to the output module;

[0046] After receiving the alarm information sent by the alarm module, the output module outputs the alarm information.

[0047] In the above scheme, it is characterized in that the method further comprises:

[0048] The output module outputs the oxygen therapy mode currently set by the ventilation device.

[0049] In the above solution, the method further includes:

[0050] When the received instruction to start the oxygen therapy mode is to start the single-tube oxygen therapy mode, the ventilation control module outputs oxygen-rich gas to the patient through the inspiratory branch.

[0051] An embodiment of the present application provides a computer storage medium, in which a control program for a ventilation device is stored. When the control program for the ventilation device is executed by a processor, the steps of the control method for the ventilation device as described above are implemented.

[0052] The embodiment of the present application provides a ventilation device and a control method thereof, and a computer storage medium, wherein the ventilation device includes: a driving module, a breathing circuit and a ventilation control module; the ventilation control module controls the driving module to provide ventilation support to the patient through the breathing circuit; the breathing circuit includes an inhalation branch and an expiratory branch; the inhalation branch is provided with an inhalation valve, and the expiratory branch is provided with an expiratory valve; when the ventilation control module is in a double-tube oxygen therapy mode, the expiratory valve is controlled to be closed and the inhalation valve is opened, and oxygen-rich gas is output through the inhalation branch; in this way, when oxygen therapy is performed on offline patients using the ventilation device with a double-tube expiratory circuit, double-tube oxygen therapy can be achieved without replacing the pipeline, thereby reducing the operation of medical staff and reducing the infection risk of patients and the cost of replacing the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 A schematic diagram of an oxygen therapy method of single-tube ventilation in the related art;

[0054] Figure 2This is a schematic diagram of the composition structure of the ventilation device according to an embodiment of the present application;

[0055] Figure 3 A schematic diagram of another structure of the ventilation device for implementing this application;

[0056] Figure 4 This is a schematic diagram of the implementation flow of the control method of the ventilation device according to the embodiment of the present application;

[0057] Figure 5 This is another implementation flow diagram of the control method of the ventilation device according to the embodiment of the present application;

[0058] Figure 6 This is another implementation flow chart of the control method of the ventilation device according to the embodiment of the present application;

[0059] Figure 7 This is a schematic diagram of the implementation process of the single-tube and double-tube oxygen therapy modes in the embodiment of the present application. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the invention will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0061] In order to better understand the embodiments of the present application, firstly, the single-tube ventilation oxygen therapy method and the double-tube ventilation oxygen therapy method in the related art are described.

[0062] Figure 1 A schematic diagram of oxygen therapy through single-tube ventilation is shown in FIG. Figure 1 As shown, the ventilator 101 has an inhalation circuit interface 102 and an exhalation circuit interface 103. In the single-tube ventilation oxygen therapy mode, only the inhalation circuit interface is connected with an inhalation tube, that is, an inhalation branch 104. When the ventilator turns on the oxygen therapy function, oxygen-rich gas is output to the patient through the inhalation branch 104.

[0063] This embodiment provides a ventilation device, Figure 2 Schematic diagram of the structure of the ventilation device of the present application embodiment. Figure 2 As shown, the ventilation device 200 includes: a driving module 201, a breathing circuit 202 and a ventilation control module 203, wherein:

[0064] The ventilation control module 203 controls the driving module 201 to provide ventilation support to the patient through the breathing circuit 202. Here, the ventilation control module 203 can control the driving module 201 to provide oxygen-rich gas to the patient through the breathing circuit 202.

[0065] The breathing circuit 202 includes an inhalation branch 2021 and an exhalation branch 2022; the inhalation branch 2021 is provided with an inhalation valve, and the exhalation branch 2022 is provided with an exhalation valve.

[0066] When the double-tube oxygen therapy mode is performed, the ventilation control module 203 controls the exhalation valve to close and controls the inhalation valve to open, and outputs oxygen-rich gas through the inhalation branch 2021.

[0067] In other embodiments, the ventilation control module 203 outputs oxygen-enriched gas to the patient through the inspiratory branch 2021 when in the single-tube oxygen therapy mode. That is, in the single-tube oxygen therapy mode, there is no need to control the expiratory valve to close, and oxygen-enriched gas can be directly output to the patient through the inspiratory branch 2021.

[0068] It should be noted that, in the present embodiment, the dual-tube oxygen therapy mode means that an inhalation tube is connected to the inhalation branch 2021 interface of the ventilation device, and an expiratory tube is connected to the expiratory branch 2022 interface; the single-tube oxygen therapy mode means that an inhalation tube is connected to the inhalation branch 2021 interface of the ventilation device, and no expiratory tube is connected to the expiratory branch 2022 interface.

[0069] The ventilation device 200 provided in this embodiment includes a driving module 201, a breathing circuit 202 and a ventilation control module 203, wherein the ventilation control module 203 controls the driving module 201 to provide ventilation support to the patient through the breathing circuit 202; the breathing circuit 202 includes an inhalation branch 2021 and an expiratory branch 2022; the inhalation branch 2021 is provided with an inhalation valve, and the expiratory branch 2022 is provided with an expiratory valve; when the ventilation control module 203 is in the double-tube oxygen therapy mode, the expiratory valve is controlled to be closed, and the inhalation valve is controlled to be opened, and then oxygen-rich gas is output through the inhalation branch 2021. In this way, double-tube oxygen therapy can be achieved without replacing the pipeline, thereby reducing the operation of medical staff, and reducing the infection risk of patients and the cost of replacing the pipeline.

[0070] Based on the above embodiments, the present application further provides a ventilation device. Figure 3 Another schematic diagram of the structure of the ventilation device for this application is shown in FIG. Figure 3 As shown, the ventilation device 300 at least includes a driving module 301, a breathing circuit 302, a ventilation control module 303 and a processing module 304, wherein: the ventilation control module 303 controls the driving module 301 to provide ventilation support to the patient through the breathing circuit 302;

[0071] The breathing circuit 302 includes an inspiratory branch 3021 and an expiratory branch 3022 , wherein the inspiratory branch 3021 is provided with an inspiratory valve, and the expiratory branch 3022 is provided with an expiratory valve.

[0072] In this embodiment, the breathing circuit 302 may further include a pressure measurement module 3023 for detecting airway pressure. In a specific implementation, the pressure measurement module 3023 may be a pressure sensor, and the pressure measurement module 3023 is disposed in the inspiratory branch 3021 or the expiratory branch 3022. The breathing circuit 302 may further include a flow rate measurement module 3024 disposed in the expiratory branch 3022. In this embodiment, the expiratory branch 3022 includes at least one of the pressure measurement module 3023 and the flow rate measurement module 3024.

[0073] exist Figure 3 In the figure, the pressure measurement module 3023 is arranged in the inhalation branch 3021, and the flow rate measurement module 3024 is arranged in the exhalation branch 3022. Of course, a pressure measurement module 3023 can be arranged in each of the inhalation branch 3021 and the exhalation branch 3022, and a flow rate measurement module 3024 can also be arranged in the exhalation branch 3022, so that the gas flow rate through the exhalation branch 3022 can be measured.

[0074] The processing module 304 determines whether the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode or a single-tube oxygen therapy mode according to the pressure change of the patient's inspiratory branch 3021 or the expiratory branch 3022 detected by the pressure measurement module 3023 and / or the flow rate change of the expiratory branch 3022 detected by the flow rate measurement module 3024 when the expiratory valve is opened or closed.

[0075] When the current oxygen therapy mode of the ventilation device is the double-tube oxygen therapy mode, the exhalation valve is controlled to be closed and the inhalation valve is controlled to be opened, and oxygen-rich gas is output through the inhalation branch 3021.

[0076] When the oxygen therapy mode currently in which the ventilation device is in is the single-tube oxygen therapy mode, oxygen-rich gas is output through the inspiratory branch 3021 .

[0077] During double-tube oxygen therapy, when the third pressure of the expiratory branch 3022 detected by the pressure measurement module 3023 is greater than the first pressure threshold, the ventilation control module 303 opens the expiratory valve and keeps the pressure in the expiratory branch 3022 less than or equal to the first pressure threshold.

[0078] Here, after opening the exhalation valve, after a certain period of time, when the fourth pressure of the exhalation branch 3022 detected by the pressure measurement module 3023 is less than the third pressure threshold, the ventilation control module 303 closes the exhalation valve and continuously outputs oxygen-rich gas to the patient through the inhalation branch 3021.

[0079] In this embodiment, the third pressure threshold cannot be greater than the first pressure threshold, that is, the third pressure threshold can be less than or equal to the first pressure threshold.

[0080] The ventilation device also includes an alarm module and an output module. The output module may include a voice player, a display screen, etc. The output module may be used to output the oxygen therapy mode currently displayed by the ventilation device. During the oxygen therapy process, when the third pressure of the expiratory branch detected by the pressure measurement module 3023 is greater than the second pressure threshold, the alarm module sends an alarm message to the output module. After receiving the alarm message sent by the alarm module, the output module may alarm the user. Among them, the second pressure threshold is not less than the first pressure threshold, that is, the second pressure threshold is greater than or equal to the first pressure threshold.

[0081] In this embodiment, the oxygen therapy mode and alarm information of the ventilation device can be output in the form of audio or in the form of images. That is, the oxygen therapy mode and alarm information of the ventilation device can be broadcasted by voice or displayed on a display screen.

[0082] In this embodiment, when the processing module 304 determines whether the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode or a single-tube oxygen therapy mode, it can be determined only by the pressure change of the inspiratory branch 3021 or the expiratory branch 3022, or it can be determined only by the flow rate change of the expiratory branch 3022, or it can be determined by both the pressure change and the flow rate change.

[0083] When the oxygen therapy mode is determined only by the pressure change of the inspiratory branch 3021 or the expiratory branch 3022, the processing module 304 first obtains the first pressure of the inspiratory branch 3021 or the expiratory branch 3022 detected by the pressure measurement module 3023 when the expiratory valve is opened; and then obtains the second pressure of the inspiratory branch 3021 or the expiratory branch 3022 detected by the pressure measurement module 3023 when the expiratory valve is closed; if the first change between the first pressure and the second pressure meets the first preset condition, the processor 304 determines that the current oxygen therapy mode of the ventilation device is the double-tube oxygen therapy mode; if the first change does not meet the first preset condition, the processor 304 determines that the current oxygen therapy mode of the ventilation device is the single-tube oxygen therapy mode.

[0084] In practical applications, the first change amount may refer to the first difference between the second pressure and the first pressure, and the first preset condition may be that the first difference is greater than a preset first difference threshold; the first change amount may also be the first change rate from the first pressure to the second pressure, and the first preset condition may be that the first change rate is greater than a preset first change rate threshold.

[0085] When the oxygen therapy mode is determined only by flow rate changes, the processing module 304 obtains the first flow rate of the expiratory branch 3022 detected by the flow rate measurement module 3024 when the expiratory valve is opened, and obtains the second flow rate of the expiratory branch 3022 detected by the flow rate measurement module 3024 when the expiratory valve is closed; if the second change between the first flow rate and the second flow rate meets the second preset condition, the processor 304 determines that the current oxygen therapy mode of the ventilation device is the double-tube oxygen therapy mode; if the second change does not meet the second preset condition, the processor 304 determines that the current oxygen therapy mode of the ventilation device is the single-tube oxygen therapy mode.

[0086] In practical applications, the second change amount may refer to the second difference between the first flow rate and the second flow rate, and the second preset condition may be that the second difference is greater than a preset second difference threshold; the second change amount may also be the second change rate from the first flow rate to the second flow rate, and the second preset condition may be that the second change rate is greater than the second change rate threshold.

[0087] When the oxygen therapy mode is determined by both the pressure change and the flow rate change, firstly, the first pressure of the inspiratory branch 3021 or the expiratory branch 3022 detected by the pressure measurement module 3023 and the first flow rate of the expiratory branch 3022 detected by the flow rate measurement module 3024 when the expiratory valve is opened are obtained; then, the second pressure of the inspiratory branch 3021 or the expiratory branch 3022 detected by the pressure measurement module 3023 and the second flow rate of the expiratory branch 3022 detected by the flow rate measurement module 3024 when the expiratory valve is closed are obtained; if the first change between the first pressure and the second pressure meets the first preset condition, or the second change between the first flow rate and the second flow rate meets the second preset condition, the processor 304 determines that the oxygen therapy mode currently in which the ventilation device is located is the double-tube oxygen therapy mode; if the first change between the first pressure and the second pressure does not meet the first preset condition, and the second change between the first flow rate and the second flow rate does not meet the second preset condition, the processor 304 determines that the oxygen therapy mode currently in which the ventilation device is located is the single-tube oxygen therapy mode.

[0088] It should be noted that the branches corresponding to the first pressure and the second pressure are the same. For example, if the first pressure is the pressure of the inhalation branch 3021 detected by the pressure measurement module 3023, then the second pressure is the pressure of the inhalation branch 3021 detected by the measurement module; if the first pressure is the pressure of the expiratory branch 3022 detected by the pressure measurement module 3023, then the second pressure is the pressure of the expiratory branch 3022 detected by the measurement module.

[0089] The ventilation device 300 provided in this embodiment at least includes a driving module 301, a breathing circuit 302, a ventilation control module 303 and a processing module 304; wherein the ventilation control module 301 controls the driving module 302 to provide ventilation support to the patient through the breathing circuit 302; the breathing circuit 302 includes an inspiratory branch 3021 and an expiratory branch 3022; the inspiratory branch 3021 is provided with an inspiratory valve, and the expiratory branch 3022 is provided with an expiratory valve; the breathing circuit 302 also includes a pressure measurement module 3023 for detecting airway pressure and a flow rate measurement module 3024 provided in the expiratory branch; the processing module 304 detects the pressure of the airway according to the pressure measurement module 3023 when the expiratory valve is opened or closed. The measured pressure change, and / or the flow rate change detected by the flow rate measurement module 3024, determines whether the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode or a single-tube oxygen therapy mode; when the current oxygen therapy mode of the ventilation device is the double-tube oxygen therapy mode, the exhalation valve is controlled to be closed and the inhalation valve is controlled to be opened, and oxygen-enriched gas is output through the inhalation branch 3021; ​​when the current oxygen therapy mode of the ventilation device is the single-tube oxygen therapy mode, oxygen-enriched gas is output through the inhalation branch 3021; ​​in this way, not only the current oxygen therapy mode of the ventilation device can be automatically determined, but also double-tube oxygen therapy can be achieved without replacing the pipeline, thereby reducing the operation of medical staff and reducing the patient's infection risk and the cost of replacing the pipeline. In addition, when the pressure of the expiratory branch 3021 detected by the pressure measurement module 3023 is greater than the first pressure threshold, the ventilation control module 303 opens the expiratory valve and maintains the patient's airway pressure less than or equal to the first pressure threshold. This can prevent blockage on the patient side from causing excessive pressure and causing harm to the patient, thereby improving the safety of the ventilation equipment.

[0090] An embodiment of the present application provides a control method for a ventilation device, which is applied to the ventilation device. The ventilation device at least includes: a receiving module, a driving module, a breathing circuit and a ventilation control module. Figure 4 Schematic diagram of the implementation flow of the control method of the ventilation device of the present application embodiment. Figure 4 As shown, the method comprises the following steps:

[0091] Step S401: The receiving module receives an instruction to start the oxygen therapy mode.

[0092] Here, in this embodiment, the ventilation device may be a ventilator. The exhalation circuit in the ventilation device includes an exhalation branch and an inhalation branch, wherein the exhalation branch at least includes an exhalation valve, and the inhalation branch at least includes an inhalation valve.

[0093] When implementing step S401, the instruction to turn on the oxygen therapy mode can be triggered by pressing or touching a button to turn on the oxygen therapy mode, or can be triggered by a preset voice or gesture. Therefore, the receiving module can be a button, a touch screen, a voice receiving device, an image receiving device, etc.

[0094] Step S402, when the received instruction to start the oxygen therapy mode is to start the double-tube oxygen therapy mode, the ventilation control module controls the exhalation valve to close and controls the inhalation valve to open, so as to control the driving module to output oxygen-rich gas through the inhalation branch.

[0095] Here, in other embodiments, after receiving the instruction to start the oxygen therapy mode, it is also necessary to determine the current oxygen therapy mode of the ventilation device according to the oxygen therapy parameters of the ventilation device, and when the ventilation device is currently in a double-tube oxygen therapy mode, it is determined that the received instruction to start the oxygen therapy mode is an instruction to start the double-tube oxygen therapy mode; when the ventilation device is currently in a single-tube oxygen therapy mode, it is determined that the received instruction to start the oxygen therapy mode is an instruction to start the single-tube oxygen therapy mode.

[0096] When the received instruction to start the oxygen therapy mode is to start the double-tube oxygen therapy mode, the sealing valve pressure of the expiratory valve can be set to a preset value through the ventilation control module to control the expiratory valve to be closed; the sealing valve pressure of the inhalation valve can be set to zero through the ventilation control module to control the inhalation valve to be opened, and oxygen-rich gas can be output through the inhalation branch.

[0097] In the control method of the ventilation device provided in the present embodiment, first, the receiving module receives an instruction to start the oxygen therapy mode. When the received instruction to start the oxygen therapy mode is to start the double-tube oxygen therapy mode, the ventilation control module controls the exhalation valve of the ventilation device to close, and controls the inhalation valve of the ventilation device to open, so as to output oxygen-rich gas through the inhalation branch. In this way, when the ventilation device receives the instruction to start the double-tube oxygen therapy mode, it controls the exhalation valve to close, and can achieve double-tube oxygen therapy without replacing the pipeline, thereby reducing the operation of medical staff and reducing the patient's infection risk and the cost of replacing the pipeline.

[0098] Based on the foregoing embodiments, an embodiment of the present application further provides a control method for a ventilation device, which is applied to the ventilation devices provided in other embodiments. The ventilation device at least includes: a receiving module, a driving module, a breathing circuit, a processing module and a ventilation control module. Figure 5 FIG. 1 is another implementation flow chart of the control method of the ventilation device according to the embodiment of the present application, as shown in FIG. Figure 5 As shown, the method comprises the following steps:

[0099] Step S501: the receiving module receives an instruction to start the oxygen therapy mode.

[0100] Step S502: Based on the instruction to start the oxygen therapy mode, the ventilation control module controls the exhalation valve of the ventilation device to open, and the processing module obtains the first oxygen therapy parameter of the ventilation device.

[0101] Here, in practical applications, the sealing pressure of the exhalation valve can be set to zero by the ventilation control module to control the opening of the exhalation valve. The first oxygen therapy parameter can include a first pressure of the inspiratory branch or the expiratory branch, and can also include a first flow rate of the expiratory branch.

[0102] Step S503: the ventilation control module controls the exhalation valve of the ventilation device to close, and the processing module obtains the second oxygen therapy parameter of the ventilation device.

[0103] Here, in practical application, the ventilation control module may set the sealing pressure of the exhalation valve to a preset value to close the exhalation valve. The second oxygen therapy parameter may include a second pressure of the inspiratory branch or the expiratory branch, and may also include a second flow rate of the expiratory branch.

[0104] Step S504: The processing module determines the current oxygen therapy mode of the ventilation device according to the first oxygen therapy parameter and the second oxygen therapy parameter.

[0105] Here, step S504 can be implemented in at least the following three ways:

[0106] The first implementation method: the processing module determines the current oxygen therapy mode of the ventilation device according to the pressure change of the inspiratory branch or the expiratory branch, wherein if a first change amount between the first pressure and the second pressure meets a first preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode; if the first change amount does not meet the first preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

[0107] The second implementation method: the processing module determines the current oxygen therapy mode of the ventilation device through the flow rate change of the expiratory branch, wherein if the second change amount between the first flow rate and the second flow rate meets the second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is the double-tube oxygen therapy mode; if the second change amount does not meet the second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is the single-tube oxygen therapy mode.

[0108] A third implementation method: The processing module determines the current oxygen therapy mode of the ventilation device through pressure changes and flow rate changes, wherein if a first change between the first pressure and the second pressure meets a first preset condition, or a second change between the first flow rate and the second flow rate meets a second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode; if the first change does not meet the first preset condition, and the second change does not meet the second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

[0109] In other embodiments, after the processing module determines the current oxygen therapy mode, the output module of the ventilation equipment will also output the current oxygen therapy mode of the ventilation equipment, so that medical staff and patients can understand the oxygen therapy mode of the ventilation equipment in a timely manner.

[0110] Step S505: the processing module determines whether the ventilation device is in double-tube oxygen therapy mode.

[0111] Here, if the ventilation device is in double-tube oxygen therapy mode, proceed to step S507; if the ventilation device is in single-tube oxygen therapy mode, proceed to step S506.

[0112] Step S506: the ventilation control module controls the driving module to output oxygen-rich gas through the inhalation branch.

[0113] Step S507: the ventilation control module controls the exhalation valve of the ventilation device to close.

[0114] Step S508: the ventilation control module controls the inhalation valve of the ventilation device to open, so as to control the driving module to output oxygen-rich gas through the inhalation branch.

[0115] It should be noted that the explanations of the same steps or concepts in this embodiment as those in other embodiments may refer to the descriptions in other embodiments.

[0116] Step S509: the processing module obtains the current third pressure of the expiratory branch in the ventilation device.

[0117] Here, the third pressure may be acquired in real time, or may be acquired once at a certain time interval, for example, once every 5 seconds.

[0118] Step S510: the processing module determines whether the third pressure is greater than the first pressure threshold.

[0119] Here, if the third pressure is greater than the first pressure threshold, it means that the pressure of the expiratory branch of the ventilation equipment is too high, which may cause harm to the patient. At this time, step S512 is entered to release the pressure by opening the expiratory valve; if the third pressure is not greater than the first pressure threshold, it means that the pressure of the expiratory branch of the ventilation equipment is not likely to cause harm to the patient. At this time, step S511 is entered.

[0120] In step S511, the ventilation control module keeps the exhalation valve closed and loops into step S509.

[0121] Step S512: The ventilation control module controls the exhalation valve to open, so as to keep the pressure of the ventilation device less than or equal to the first pressure threshold.

[0122] Step S513: the processing module obtains a current fourth pressure of the expiratory branch of the ventilation device.

[0123] Here, the fourth pressure may be acquired in real time, or may be acquired once at a certain time interval, for example, once every 5 seconds.

[0124] Step S514: the processing module determines whether the fourth pressure is less than the third pressure threshold.

[0125] Here, if the fourth pressure is less than the third pressure threshold, it means that the current pressure of the expiratory branch of the ventilation equipment is relatively small, and the expiratory valve can be sealed again to prevent the oxygen-rich gas from leaking out of the expiratory branch. At this time, step S507 is entered; if the fourth pressure is not less than the third pressure threshold, it means that the current pressure of the expiratory branch of the ventilation equipment is still relatively large. At this time, step S515 is entered to keep the expiratory valve open to avoid harm to the patient due to excessive airway pressure.

[0126] In step S515, the ventilation control module keeps the exhalation valve open and loops into step S513.

[0127] In other embodiments, after step S508, the method further includes: if the third pressure is greater than the second pressure threshold, outputting an alarm message to remind the user that the pressure of the expiratory branch of the ventilation device is too high, which may easily cause harm to the patient and the use of the ventilation device needs to be suspended.

[0128] In the control method of the ventilation device provided in this embodiment, first, when an operation instruction to start the oxygen therapy mode is detected, the exhalation valve of the ventilation device is controlled to be opened, and a first oxygen therapy parameter of the ventilation device is obtained; then, the exhalation valve of the ventilation device is controlled to be closed, and a second oxygen therapy parameter of the ventilation device is obtained; according to the first oxygen therapy parameter and the second oxygen therapy parameter, it is determined whether the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode or a single-tube oxygen therapy mode. When the ventilation device is in the double-tube oxygen therapy mode, the exhalation valve of the ventilation device is controlled to be closed; the inhalation valve of the ventilation device is controlled to be opened to output oxygen-enriched gas through the inhalation branch. When the ventilation device is in the single-tube oxygen therapy mode, oxygen-enriched gas is directly output through the inhalation branch; in this way, the ventilation device itself can determine the current oxygen therapy mode and perform the gas supply operation of the relevant oxygen therapy mode, thereby reducing the operation of medical staff, and reducing the infection risk of patients and the cost of replacing pipelines; and in the double-tube oxygen therapy mode, the current third pressure of the ventilation device itself is obtained. When the third pressure is greater than the first pressure threshold, the exhalation valve is opened to release the pressure, so as to prevent the patient from being injured due to excessive pressure at the patient end caused by the closure of the exhalation valve.

[0129] The present application embodiment further provides a method for controlling a ventilation device. Figure 6 FIG. 1 is another implementation flow chart of the control method of the ventilation device according to the embodiment of the present application. Figure 6 As shown, the method comprises the following steps:

[0130] Step S601: After the oxygen therapy mode is turned on, the ventilation device starts to deliver air.

[0131] Step S602, controlling the exhalation valve of the ventilation device to close the valve according to the set pressure.

[0132] Here, the set pressure may be a default setting of the ventilation device when it leaves the factory, or may be manually set by the user.

[0133] Step S603, when the ventilation device performs oxygen therapy ventilation, monitor the third pressure of the expiratory branch in real time to determine whether the third pressure of the expiratory branch is greater than the first pressure threshold.

[0134] Here, if the third pressure is greater than the first pressure threshold, it means that the pressure in the expiratory branch is too high, which may cause harm to the patient, and step S604 is entered at this time; if the third pressure is less than or equal to the first pressure threshold, and the ventilation device is in an alarm state, step S606 is entered at this time.

[0135] Step S604, controlling the exhalation valve to open, releasing pressure and maintaining the pressure in the exhalation branch circuit not exceeding a first pressure threshold.

[0136] Here, in other embodiments, after step S604, it is determined whether to seal the exhalation valve again based on the current pressure of the exhalation branch monitored in real time. In actual application, it can be determined whether the current pressure of the exhalation branch is less than a third threshold value. When the current pressure of the exhalation branch is less than the third threshold value, the exhalation valve can be sealed again.

[0137] Step S605: an alarm is issued to remind the user that the airway is blocked.

[0138] Step S606, clear the alarm status.

[0139] Here, the alarm threshold may be equal to the first pressure threshold. In other embodiments, the alarm threshold may also be greater than the first pressure threshold, and the alarm threshold may be a default setting of the ventilation device at the factory or a manual setting by the user, and when the third pressure is lower than the alarm threshold, the alarm is cancelled.

[0140] In this embodiment, before step S602 "controlling the exhalation valve of the ventilation device to seal the valve according to the set pressure", the control method of the ventilation device also includes a process of identifying the single-tube and double-tube oxygen therapy modes. Figure 7 This is a schematic diagram of the implementation process of the single-tube and double-tube oxygen therapy mode recognition process of the present application embodiment, such as Figure 7 As shown, the process includes:

[0141] Step S701: The ventilation device turns on the oxygen therapy function and starts delivering air.

[0142] Step S702, open the exhalation valve.

[0143] Step S703, measuring the current exhalation flow rate Fexp1 and exhalation pressure Pexp1.

[0144] Step S704, close the exhalation valve.

[0145] Step S705, measuring the current exhalation flow rate Fexp2 and exhalation pressure Pexp2.

[0146] Step S706, determining whether Pexp2-Pexp1 is less than a first difference threshold and Fexp1-Fexp2 is less than a second difference threshold.

[0147] Here, if Pexp2-Pexp1 is less than the first difference threshold and Fexp1-Fexp2 is less than the second difference threshold, then step S708 is entered; if Pexp2-Pexp1 is not less than the first difference threshold or Fexp1-Fexp2 is not less than the second difference threshold, then step S707 is entered.

[0148] The first difference threshold and the second difference threshold may be preset by the user, or may be factory defaulted by the ventilation device. For example, the first difference threshold may be 1 cmH2O, and the second difference threshold may be 1 Liter Per Minute (LPM).

[0149] Step S707, determining whether the ventilation device is currently in double-tube oxygen therapy mode.

[0150] Step S708, determining whether the ventilation device is currently in single-tube oxygen therapy mode.

[0151] In other embodiments, after the oxygen therapy mode of the ventilation device is determined, the current oxygen therapy mode of the ventilation device can be output and displayed, and the gas supply operation of the relevant pipeline type can be performed.

[0152] It should be noted that, in other embodiments, the expiratory pressure or the expiratory flow rate can also be used alone to determine the current oxygen therapy mode of the ventilation device, identify the single or double tube type, and perform oxygen therapy gas delivery corresponding to the single or double tube. In the double tube oxygen therapy mode, the expiratory valve is closed to prevent the oxygen-rich gas from leaking from the expiratory tube, and the pressure in the expiratory branch is detected in real time. When the pressure of the expiratory branch is greater than the first pressure threshold, the expiratory valve is opened to release the pressure, thereby avoiding harm to the patient due to excessive airway pressure and improving the safety of the equipment.

[0153] It should be noted that if the above-mentioned photoacoustic imaging method is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the methods of each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM, Read Only Memory), a magnetic disk or an optical disk. In this way, the embodiment of the present application is not limited to any specific combination of hardware and software.

[0154] Accordingly, an embodiment of the present application further provides a computer storage medium, on which computer executable instructions are stored. When the computer executable instructions are executed by a processor, the steps of the control method of the ventilation device provided in the above embodiment are implemented.

[0155] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0156] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0157] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0158] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0159] In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be a separate unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0160] A person skilled in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, etc., various media that can store program codes.

[0161] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application can essentially or in other words, the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for a computing device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods of each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0162] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A ventilation device, characterized in that: The ventilation device comprises: a driving module, a breathing circuit and a ventilation control module, wherein: The ventilation control module controls the driving module to provide ventilation support to the patient through the breathing circuit; The breathing circuit comprises an inhalation branch and an exhalation branch; the inhalation branch is provided with an inhalation valve, and the exhalation branch is provided with an exhalation valve; When the ventilation control module is in the double-tube oxygen therapy mode, it controls the exhalation valve to close and the inhalation valve to open, and outputs oxygen-rich gas through the inhalation branch.

2. The ventilation device according to claim 1, characterized in that The breathing circuit also includes at least one of a pressure measuring module arranged in the inspiratory branch and / or the expiratory branch, and a flow rate measuring module arranged in the expiratory branch, wherein the pressure measuring module is used to detect the pressure in the inspiratory branch and / or the expiratory branch; and the flow rate measuring module is used to detect the gas flow rate in the expiratory branch.

3. The ventilation device according to claim 2, characterized in that The pressure measuring module is at least arranged in the expiratory branch. During the oxygen therapy process, when the pressure measuring module detects that the third pressure of the expiratory branch is greater than the first pressure threshold, the ventilation control module opens the expiratory valve and keeps the pressure in the expiratory branch less than or equal to the first pressure threshold.

4. The ventilation device according to claim 3, characterized in that The ventilation device also includes an alarm module and an output module, wherein: The alarm module sends an alarm message to the output module when the third pressure of the expiratory branch detected by the pressure measurement module is greater than the second pressure threshold; The output module outputs the alarm information after receiving the alarm information sent by the alarm module.

5. The ventilation device according to any one of claims 1 to 4, characterized in that The ventilation control module outputs oxygen-rich gas to the patient through the inspiratory branch when in the single-tube oxygen therapy mode.

6. The ventilation device according to claim 5, characterized in that The ventilation device also includes a processing module; The processing module determines whether the current oxygen therapy mode is a double-tube oxygen therapy mode or a single-tube oxygen therapy mode according to the pressure change of the inspiratory branch or the expiratory branch detected by the pressure measurement module and / or the flow rate change of the expiratory branch detected by the flow rate measurement module when the expiratory valve is opened and closed.

7. The ventilation device according to claim 6, characterized in that The processing module obtains a first pressure of the inspiratory branch or the expiratory branch detected by the pressure measuring module when the exhalation valve is opened, and obtains a second pressure of the inspiratory branch or the expiratory branch detected by the pressure measuring module when the exhalation valve is closed; If a first change between the first pressure and the second pressure satisfies a first preset condition, the processor determines that the oxygen therapy mode currently in which the ventilation device is in is a double-tube oxygen therapy mode; If the first change amount does not meet the first preset condition, the processor determines that the oxygen therapy mode currently in which the ventilation device is in is a single-tube oxygen therapy mode.

8. The ventilation device according to claim 6 or 7, characterized in that The processing module obtains a first flow rate of the exhalation branch detected by the flow rate measurement module when the exhalation valve is opened, and obtains a second flow rate of the exhalation branch detected by the flow rate measurement module when the exhalation valve is closed; If a second change between the first flow rate and the second flow rate satisfies a second preset condition, the processor determines that the oxygen therapy mode currently in which the ventilation device is in is a double-tube oxygen therapy mode; If the second change amount does not meet the second preset condition, the processor determines that the oxygen therapy mode currently in which the ventilation device is in is a single-tube oxygen therapy mode.

9. The ventilation device according to claim 8, characterized in that If the first change amount satisfies the first preset condition, or the second change amount satisfies the second preset condition, the processor determines that the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode; If the first change amount does not satisfy the first preset condition, and the second change amount does not satisfy the second preset condition, the processor determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

10. The ventilation device according to any one of claims 6, characterized in that The output module is also used to output and display the current oxygen therapy mode of the ventilation device.

11. A control method for a ventilation device, applied to the ventilation device, the ventilation device at least comprising: The receiving module, the driving module, the breathing circuit and the ventilation control module are characterized in that the method comprises: The receiving module receives an instruction to start the oxygen therapy mode; When the received instruction to start the oxygen therapy mode is to start the double-tube oxygen therapy mode, the ventilation control module controls the exhalation valve of the ventilation device to close, controls the inhalation valve of the ventilation device to open, and controls the driving module to output oxygen-rich gas through the inhalation branch in the breathing circuit.

12. The method according to claim 11, wherein the ventilation device further comprises a processing module, characterized in that: After the receiving module receives the instruction to start the oxygen therapy mode, the method further includes: The ventilation control module controls the exhalation valve to open, and the processing module obtains a first oxygen therapy parameter of the ventilation device; The ventilation control module controls the exhalation valve of the ventilation device to close, and the processing module obtains a second oxygen therapy parameter of the ventilation device; The processing module determines the oxygen therapy mode currently set by the ventilation device according to the first oxygen therapy parameter and the second oxygen therapy parameter.

13. The method according to claim 12, characterized in that The first oxygen therapy parameter includes a first pressure of an inspiratory branch or an expiratory branch, and the second oxygen therapy parameter includes a second pressure of an inspiratory branch or an expiratory branch. Correspondingly, the processing module determines the oxygen therapy mode currently in which the ventilation device is located according to the first oxygen therapy parameter and the second oxygen therapy parameter, including: If a first change between the first pressure and the second pressure satisfies a first preset condition, the processing module determines that the oxygen therapy mode currently in which the ventilation device is in is a double-tube oxygen therapy mode; If the first change amount does not meet the first preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

14. The method according to claim 12, characterized in that The first oxygen therapy parameter includes a first flow rate of the expiratory limb, and the second oxygen therapy parameter includes a second flow rate of the expiratory limb. Correspondingly, the processing module determines the oxygen therapy mode currently in which the ventilation device is located according to the first oxygen therapy parameter and the second oxygen therapy parameter, including: If a second change between the first flow rate and the second flow rate satisfies a second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode; If the second change amount does not meet the second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

15. The method according to claim 12, characterized in that The first oxygen therapy parameter includes a first pressure of the inspiratory branch or the expiratory branch and a first flow rate of the expiratory branch, and the second oxygen therapy parameter includes a second pressure of the inspiratory branch or the expiratory branch and a second flow rate of the expiratory branch. Correspondingly, the processing module determines the oxygen therapy mode currently in which the ventilation device is located according to the first oxygen therapy parameter and the second oxygen therapy parameter, including: If a first change between the first pressure and the second pressure satisfies a first preset condition, or a second change between the first flow rate and the second flow rate satisfies a second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a double-tube oxygen therapy mode; If the first change amount does not satisfy a first preset condition, and the second change amount does not satisfy a second preset condition, the processing module determines that the current oxygen therapy mode of the ventilation device is a single-tube oxygen therapy mode.

16. The method according to any one of claims 11 to 14, characterized in that If the oxygen therapy mode currently in which the ventilation device is in is a double-tube oxygen therapy mode, after the ventilation control module controls the exhalation valve of the ventilation device to be closed, the method further includes: The processing module obtains a current third pressure of the ventilation device; If the third pressure is greater than the first pressure threshold, the ventilation control module controls the exhalation valve to open, so as to keep the pressure of the exhalation branch of the ventilation device less than or equal to the first pressure threshold.

17. The method according to claim 16, wherein the ventilation device further comprises an alarm module and an output module, characterized in that: The method further comprises: When the third pressure of the expiratory branch detected by the pressure measurement module is greater than the second pressure threshold, the alarm module sends an alarm message to the output module; After receiving the alarm information sent by the alarm module, the output module outputs the alarm information.

18. The method according to any one of claims 11 to 15, characterized in that The method further comprises: The output module outputs the oxygen therapy mode currently set by the ventilation device.

19. The method according to claim 11, characterized in that The method further comprises: When the received instruction to start the oxygen therapy mode is to start the single-tube oxygen therapy mode, the ventilation control module outputs oxygen-rich gas to the patient through the inspiratory branch.

20. A computer storage medium, characterized in that The computer storage medium stores a control program for the ventilation device, and when the control program for the ventilation device is executed by the processor, the steps of the control method for the ventilation device according to any one of claims 11 to 19 are implemented.

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