Respiratory support apparatus and pressure regulation method and pressure regulation device, terminal device

Abstract

This application relates to the field of medical device technology and provides a pressure adjustment method for a respiratory support device, comprising: obtaining the actual pressure value output by the respiratory support device; calculating the error between the actual pressure value and a target pressure value as a pressure error value; confirming whether the pressure error value is greater than the pressure allowable error ±2%; and when the pressure error value is greater than the pressure allowable error, adjusting the pressure relief area of ​​the gas delivery component to correct the actual pressure value to the target pressure value. By adjusting the pressure relief area of ​​the gas delivery component to correct the actual pressure value to the target pressure value, a constant output pressure is ensured under constant flow conditions.

Description

Technical Field

[0001] This application belongs to the field of medical equipment technology, and in particular relates to respiratory support equipment, compression adjustment methods and devices, and terminal equipment. Background Technology

[0002] With the increasing aging population and worsening environmental pollution, more and more people are suffering from respiratory diseases. High-flow respiratory support devices, such as high-flow humidified respiratory therapy devices, are commonly used to treat these diseases, preventing hypoxia and carbon dioxide buildup in the body, enabling the body to overcome respiratory failure caused by underlying diseases, and achieving the best therapeutic effect.

[0003] High-flow-rate respiratory support devices manufactured by different companies may have varying output pressures at the delivery end for the same flow rate due to differences in production standards. For example, at a flow rate of 60 LPM, the output pressure at the delivery end of respiratory support devices from different manufacturers may be 5 cmH2O, 8 cmH2O, or even as high as 20 cmH2O. Since different individuals have different tolerance levels, those with lower tolerance may find it difficult to adapt to higher pressures. Therefore, while maintaining a constant flow rate, it is necessary to adjust the output pressure of each respiratory support device to ensure that it outputs the expected pressure value and meets the user's varying pressure requirements. Summary of the Invention

[0004] In view of this, embodiments of this application provide a respiratory support device, a pressure regulation method and device, and a terminal device method and device, which can solve the problem of inconsistent output pressure of respiratory support devices produced by different manufacturers under the same flow rate.

[0005] In a first aspect, embodiments of this application provide a respiratory support device, including an air delivery assembly and a pressure regulating device disposed on the air delivery assembly for adjusting the output pressure. The air delivery assembly includes an air delivery end and an air passage communicating with the air delivery end.

[0006] Secondly, embodiments of this application provide a pressure adjustment method for a respiratory support device, comprising:

[0007] Obtain the actual pressure value output by the respiratory support device;

[0008] The error between the actual pressure value and the target pressure value is calculated as the pressure error value.

[0009] Confirm whether the pressure error value is greater than the allowable pressure error ±2%;

[0010] When the pressure error value is greater than the pressure allowable error, the pressure relief area of ​​the gas transmission component is adjusted to correct the actual pressure value to the target pressure value.

[0011] In a first possible implementation of the second aspect, the step of adjusting the pressure relief area of ​​the gas delivery assembly to correct the actual pressure value to the target pressure value when the pressure error value is greater than the allowable pressure error includes:

[0012] When the pressure error value is greater than the allowable pressure error, the pressure relief area in the regulating gas path is... Where S is the pressure relief area, C is the proportionality coefficient, P is the actual pressure value, S0 is the cross-sectional area of ​​the gas delivery end, and S1 is the cross-sectional area of ​​the gas path at the pressure relief point.

[0013] For example, the cross-sectional area at the pressure relief point in the gas path is the same as the cross-sectional area at the gas delivery end, and the pressure relief area is S = C / P - S0; where S is the pressure relief area, C is the proportionality coefficient, P is the actual pressure value, and S0 is the cross-sectional area at the gas delivery end.

[0014] In a second possible implementation of the second aspect, the step of adjusting the pressure relief area of ​​the gas delivery assembly to correct the actual pressure value to the target pressure value when the pressure error value is greater than the allowable pressure error includes:

[0015] When the pressure error value is greater than the allowable pressure error, adjust the pressure relief area at the gas delivery end to be... Where S is the pressure relief area, S0 is the cross-sectional area of ​​the gas delivery end, C is the proportionality coefficient, and P0 is the target pressure value.

[0016] In a third possible implementation of the second aspect, the respiratory support device includes an air delivery end, and the step of adjusting the pressure relief area of ​​the air delivery component to correct the actual pressure value to the target pressure value when the pressure error value is greater than the pressure allowable error includes:

[0017] When the pressure error value is greater than the allowable pressure error, the cross-sectional area of ​​the gas delivery end is adjusted to be... Where S0 is the cross-sectional area of ​​the gas delivery end, C is the proportionality coefficient, and P0 is the target pressure value.

[0018] In a fourth possible implementation of the second aspect, the pressure adjustment method of the respiratory support device further includes:

[0019] Obtain the actual flow rate at the gas delivery end;

[0020] The error between the actual flow rate and the target flow rate is calculated as the flow rate error value.

[0021] Confirm whether the flow rate error value is greater than the allowable flow rate error ±10%;

[0022] When the flow error value is greater than the allowable flow error, the rotation speed of the respiratory support device is adjusted to correct the actual flow value to the target flow value.

[0023] Based on the fourth possible implementation of the second aspect, in the fifth possible implementation, the step of obtaining the actual flow rate value at the gas transmission end includes:

[0024] The actual flow rate at the gas delivery end is calculated based on the measured flow rate in the gas path. Where Q0 is the actual flow rate, S0 is the cross-sectional area of ​​the gas delivery end, S2 is the cross-sectional area of ​​the flow measurement point in the gas path, and Q1 is the flow rate in the gas path.

[0025] For example, the step of obtaining the actual flow rate value at the gas delivery end includes:

[0026] The flow rate at a location in the gas path with the same cross-sectional area as the gas delivery end is measured and taken as the actual flow rate at the gas delivery end.

[0027] Optionally, the target pressure value is set to 4 cmH2O to 20 cmH2O.

[0028] For example, the air delivery end is a face mask or nasal plug.

[0029] Thirdly, this application provides a pressure regulating device, including: a pressure acquisition module, used to acquire the actual pressure value output by a respiratory support device;

[0030] The pressure calculation module is used to calculate the error between the actual pressure value and the target pressure value as the pressure error value.

[0031] The pressure judgment module is used to confirm whether the pressure error value is greater than the pressure allowable error ±2%.

[0032] The pressure correction module is used to adjust the pressure relief area of ​​the gas delivery component and correct the actual pressure value to the target pressure value when the pressure error value is greater than the pressure allowable error.

[0033] Fourthly, embodiments of this application provide a terminal device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the method described in any one of the second aspects.

[0034] It is understood that the beneficial effects of the first, third and fourth aspects mentioned above can be found in the relevant descriptions in the second aspect mentioned above, and will not be repeated here.

[0035] The beneficial effects of the embodiments in this application compared with the prior art are:

[0036] This application embodiment adjusts the pressure relief area of ​​the gas delivery component to correct the actual pressure value to the target pressure value, so as to ensure that the output pressure is constant under the condition of constant flow rate. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of a respiratory support device provided in an embodiment of this application;

[0039] Figure 2 This is a schematic flowchart of a pressure adjustment method for a respiratory support device provided in an embodiment of this application;

[0040] Figure 3 This is a schematic flowchart of a pressure adjustment method for a respiratory support device provided in another embodiment of this application;

[0041] Figure 4 This is a structural block diagram of a pressure regulating device provided in an embodiment of this application;

[0042] Figure 5 This is a structural block diagram of a pressure regulating device provided in another embodiment of this application;

[0043] Figure 6 This is a schematic diagram of the structure of the terminal device provided in the embodiments of this application. Detailed Implementation

[0044] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0045] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0046] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0047] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as meaning "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0048] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0050] The pressure adjustment method for respiratory support devices provided in this application embodiment can be applied to high-flow respiratory support devices such as ventilators and high-flow non-invasive humidification therapy devices. This application embodiment does not impose any restrictions on the specific type of respiratory support device.

[0051] Taking the respiratory support device as an example, which is a high-flow non-invasive respiratory humidification therapy device. Figure 1 This diagram illustrates the structure of a respiratory support device provided in an embodiment of this application. (Reference) Figure 1 The respiratory support device 100 includes a gas delivery assembly 110 and a pressure regulating device 120 disposed on the gas delivery assembly 110 for adjusting the output pressure. The gas delivery assembly 110 includes components such as a gas delivery end 111 and an air passage 112 communicating with the gas delivery end. The respiratory support device may also include a turbine assembly 130, and the flow rate of the respiratory support device in the air passage 112 can be adjusted by adjusting the rotational speed of the turbine assembly 130.

[0052] Those skilled in the art will understand that Figure 1 The structure of the respiratory support device shown does not constitute a limitation on the respiratory support device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0053] The following is combined Figure 1 A detailed description of each component of the respiratory support device 100 is provided below:

[0054] The air delivery assembly 110 is connected to the turbine assembly, and the air delivery end 111 is a mask or nose plug. The air delivery end 111 is used to deliver air or exhaust air to the user.

[0055] The pressure regulation device 120 can be installed at the gas delivery end 111 or in the gas path. When the pressure regulation device 120 is installed at the gas delivery end 111, if the gas delivery end 111 is a mask, the output pressure can be adjusted by adjusting the cross-sectional area of ​​the mask, such as by setting a pressure relief hole on the mask to adjust the output pressure. Alternatively, if the gas delivery end 111 is a nose plug, the output pressure can be adjusted by replacing the nose plug with one of different cross-sectional areas. When the pressure regulation device 120 is installed in the gas path 112, a pressure relief hole can be set in the gas path 112, and the output pressure can be adjusted by adjusting the size of the pressure relief hole.

[0056] The following embodiments can be implemented on the respiratory support device 100 having the above-described structure. The following embodiments will use the respiratory support device 100 as an example to illustrate the method for adjusting the output pressure of the respiratory support device provided in this application.

[0057] Figure 2 A schematic flowchart of a pressure adjustment method for a respiratory support device according to an embodiment of this application is shown. This is an example and not a limitation, and the method can be applied to the respiratory support device 100 described above.

[0058] S201, Obtain the actual pressure value output by the respiratory support device;

[0059] S202, calculate the error between the actual pressure value and the target pressure value as the pressure error value;

[0060] S203, confirm whether the pressure error value is greater than the pressure allowable error ±2%;

[0061] S204, when the pressure error value is greater than the pressure allowable error, adjust the pressure relief area of ​​the gas transmission component to correct the actual pressure value to the target pressure value.

[0062] In one possible implementation, when the pressure error value is greater than the allowable pressure error, the pressure relief area in the regulating gas path is... The target pressure is the gas pressure at the gas delivery end; where S is the pressure relief area, C is the proportional coefficient, P is the actual pressure value, S0 is the cross-sectional area of ​​the gas delivery end, and S1 is the cross-sectional area of ​​the gas path at the pressure relief point.

[0063] Specifically, the cross-sectional area at the pressure relief point in the gas path is the same as the cross-sectional area at the gas delivery end, and the pressure relief area is S = C / P - S0; where S is the pressure relief area, C is the proportionality coefficient, P is the actual pressure value, and S0 is the cross-sectional area at the gas delivery end.

[0064] In another possible implementation, when the pressure error value is greater than the allowable pressure error, the pressure relief area of ​​the gas delivery end, such as the face mask, is adjusted to... The target pressure is the gas pressure at the gas delivery end; where S is the pressure relief area, S0 is the cross-sectional area of ​​the gas delivery end, C is the proportional coefficient, and P0 is the target pressure value.

[0065] In another possible implementation, when the pressure error value is greater than the allowable pressure error, the cross-sectional area of ​​the air delivery end, such as the nasal plug, is adjusted to... The target pressure is the gas pressure at the gas delivery end; where S0 is the cross-sectional area of ​​the gas delivery end, C is the proportionality coefficient, and P0 is the target pressure value.

[0066] This application embodiment adjusts the pressure relief area of ​​the gas delivery component to correct the actual pressure value to the target pressure value, so as to ensure that the output pressure is constant under the condition of constant flow rate.

[0067] See Figure 3 Optionally, another embodiment of the present application provides a method for adjusting the output pressure of a respiratory support device, which further includes the following steps:

[0068] S301, Obtain the actual flow rate value at the gas transmission end;

[0069] In one possible implementation, the actual flow rate at the gas delivery end is calculated based on the measured flow rate value in the gas path. Where Q0 is the actual flow rate, S0 is the cross-sectional area of ​​the gas delivery end, S2 is the cross-sectional area of ​​the flow measurement point in the gas path, and Q1 is the flow rate in the gas path.

[0070] Specifically, the flow rate at a location in the gas path with the same cross-sectional area as the gas delivery end can be measured as the actual flow rate at the gas delivery end.

[0071] S302, calculate the error between the actual flow rate and the target flow rate as the flow rate error value;

[0072] S303, confirm whether the flow error value is greater than the flow allowable error ±10%;

[0073] S304, when the flow error value is greater than the allowable flow error, adjust the rotation speed of the respiratory support device to correct the actual flow rate to the target flow rate value. The rotation speed of the respiratory support device is usually adjusted by regulating the turbine speed to adjust the actual flow rate.

[0074] Step S301 can be executed after step S204, that is, after correcting the actual pressure value, the actual flow rate value is corrected; Steps S301 to S304 can also be executed before step S201, that is, after correcting the actual flow rate value, the actual pressure value is corrected.

[0075] The target pressure values ​​described in the above embodiments of this application are set to 4cmH2O to 20cmH2O to meet the needs of people with different pressure tolerance.

[0076] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. 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 this application.

[0077] Corresponding to the pressure adjustment method of the respiratory support device described in the above embodiments, Figure 4 A structural block diagram of a pressure regulating device according to an embodiment of this application is shown. For ease of explanation, only the parts related to the embodiment of this application are shown.

[0078] Reference Figure 4 The device includes:

[0079] The pressure acquisition module 401 is used to acquire the actual pressure value output by the respiratory support device.

[0080] The pressure calculation module 402 is used to calculate the error between the actual pressure value and the target pressure value as the pressure error value;

[0081] The pressure judgment module 403 is used to confirm whether the pressure error value is greater than the pressure allowable error ±2%.

[0082] The pressure correction module 404 is used to adjust the pressure relief area of ​​the gas transmission component and correct the actual pressure value to the target pressure value when the pressure error value is greater than the pressure allowable error.

[0083] Figure 5 A structural block diagram of the pressure adjustment device of a respiratory support device according to another embodiment of this application is shown. For ease of explanation, only the parts related to the embodiments of this application are shown.

[0084] Reference Figure 5 The device also includes a flow regulation unit, which comprises:

[0085] The flow acquisition module 501 acquires the actual flow value at the gas transmission end;

[0086] The flow calculation module 502 calculates the error between the actual flow value and the target flow value as the flow error value;

[0087] The flow rate judgment module 503 confirms whether the flow rate error value is greater than the allowable flow rate error ±10%;

[0088] The flow correction module 504 adjusts the rotation speed of the respiratory support device to correct the actual flow rate to the target flow rate when the flow error value is greater than the allowable flow error.

[0089] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0090] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0091] Figure 6 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. Figure 6 As shown, the terminal device 6 in this embodiment includes: at least one processor 60 ( Figure 6 (Only one is shown) a processor, a memory 61, and a computer program 62 stored in the memory 61 and executable on the at least one processor 60, which, when executing the computer program 62, implements the steps in the compression adjustment method embodiments of any of the above-described respiratory support devices.

[0092] The terminal device 6 can be a desktop computer, laptop, handheld computer, or cloud server, etc. This terminal device may include, but is not limited to, a processor 60 and a memory 61. Those skilled in the art will understand that... Figure 6 This is merely an example of terminal device 6 and does not constitute a limitation on terminal device 6. It may include more or fewer components than shown in the figure, or combine certain components, or different components, such as input / output devices, network access devices, etc.

[0093] The processor 60 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0094] In some embodiments, the memory 61 may be an internal storage unit of the terminal device 6, such as a hard disk or memory of the terminal device 6. In other embodiments, the memory 61 may be an external storage device of the terminal device 6, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the terminal device 6. Furthermore, the memory 61 may include both internal and external storage units of the terminal device 6. The memory 61 is used to store the operating system, applications, bootloader, data, and other programs, such as the program code of the computer program. The memory 61 can also be used to temporarily store data that has been output or will be output.

[0095] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps described in the various method embodiments above.

[0096] This application provides a computer program product that, when run on a mobile terminal, enables the mobile terminal to implement the steps described in the above-described method embodiments.

[0097] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a photographing device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0098] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0099] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0100] In the embodiments provided in this application, it should be understood that the disclosed pressure regulating device / terminal equipment and method can be implemented in other ways. For example, the pressure regulating device / terminal equipment embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, and may be electrical, mechanical, or other forms.

[0101] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0102] The above-described 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A pressure regulation method for a respiratory support device, characterized in that, The method comprises: acquiring an actual pressure value output by the respiratory support device; calculating an error of the actual pressure value relative to a target pressure value as a pressure error value; determining whether the pressure error value is greater than a pressure allowable error ± 2 %; when the pressure error value is greater than the pressure allowable error, adjusting a pressure relief area of a gas delivery assembly to correct the actual pressure value to the target pressure value; the respiratory support device comprises a gas delivery end and a gas path in communication with the gas delivery end; the step of adjusting the pressure relief area of the gas delivery assembly to correct the actual pressure value to the target pressure value when the pressure error value is greater than the pressure allowable error comprises: When the pressure error value is greater than a pressure allowable error, adjusting a pressure relief area of a mask to be wherein S is a pressure relief area, S0 is a cross-sectional area of a gas delivery end, C is a proportional coefficient, and P0 is a target pressure value, and the mask is the gas delivery end. Or, when the pressure error value is greater than a pressure allowable error, adjusting a cross-sectional area of a nasal plug to be where S0 is a cross-sectional area of a gas delivery end, C is a proportional coefficient, and P0 is a target pressure value, the nasal plug being the gas delivery end.

2. The pressure regulation method of a respiratory support device according to claim 1, wherein, The pressure adjustment method of the respiratory support device further comprises: acquiring an actual flow value of the gas delivery end; calculating an error of the actual flow value relative to a target flow value as a flow error value; determining whether the flow error value is greater than a flow allowable error ± 10 %; when the flow error value is greater than the flow allowable error, adjusting a rotational speed of the respiratory support device to correct the actual flow value to the target flow value; the respiratory support device comprises a gas delivery end; the step of adjusting the pressure relief area of the gas delivery assembly to correct the actual pressure value to the target pressure value when the pressure error value is greater than the pressure allowable error comprises: When the pressure error value is greater than a pressure allowable error, adjusting a pressure relief area of the mask to be S = S0(C(P0-P)) wherein S is the pressure relief area, S0 is a cross-sectional area of a gas delivery end, C is a proportional coefficient, P0 is a target pressure value, and the mask is the gas delivery end. Or, when the pressure error value is greater than a pressure allowable error, adjusting a cross-sectional area of a nasal plug to be where S0 is a cross-sectional area of a gas delivery end, C is a proportional coefficient, and P0 is a target pressure value, the nasal plug being the gas delivery end.

3. The method of pressure regulation of a respiratory support device according to claim 2, wherein, The step of obtaining the actual flow value of the gas delivery end comprises: calculating the actual flow value of the gas delivery end based on the measured flow value in the gas path as wherein Q0 is the actual flow value, S0 is the cross-sectional area of the gas delivery end, S2 is the cross-sectional area of the flow measurement position in the gas path, and Q1 is the flow value in the gas path.

4. The method of pressure regulation of a respiratory support device according to any one of claims 1 to 3, wherein, the target pressure value is set to 4 cmH2O ~ 20 cmH2O.

5. A pressure regulating device, characterized by The method comprises: a pressure acquisition module for acquiring an actual pressure value output by the respiratory support device; a pressure calculation module for calculating an error of the actual pressure value relative to a target pressure value as a pressure error value; a pressure determination module for determining whether the pressure error value is greater than a pressure allowable error ± 2 %; a pressure correction module for adjusting a pressure relief area of a gas delivery assembly to correct the actual pressure value to the target pressure value when the pressure error value is greater than the pressure allowable error; wherein the respiratory support device comprises a gas delivery end and a gas path in communication with the gas delivery end; the step of adjusting the pressure relief area of the gas delivery assembly to correct the actual pressure value to the target pressure value when the pressure error value is greater than the pressure allowable error comprises: When the pressure error value is greater than a pressure allowable error, adjusting a pressure relief area of the mask to be S = S0(C(P0-P)) where S is the pressure relief area, S0 is a cross-sectional area of a gas delivery end, C is a proportional coefficient, and P0 is a target pressure value, and the mask is the gas delivery end. Or, when the pressure error value is greater than a pressure allowable error, adjusting a cross-sectional area of a nasal plug to be where S0 is a cross-sectional area of a gas delivery end, C is a proportional coefficient, and P0 is a target pressure value, the nasal plug being the gas delivery end.

6. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to realize the method of any one of claims 1 to 4.

Images