Pressure control method, apparatus, ventilator, and storage medium

Abstract

Embodiments of the present application provide a pressure control method, device, breathing machine and storage medium, and relate to the technical field of device control. The pressure control method provided by the present application comprises: obtaining breathing information of a user; determining a breathing event and an event severity according to the breathing information; determining a target working pressure according to the breathing event, the event severity and an intelligent pressure regulating gear; and adjusting a current working pressure of the breathing machine to the target working pressure. The embodiments of the present application can intelligently calculate the pressure regulating degree according to the breathing event and the severity during use, and automatically give corresponding pressure adjustment, thereby avoiding human-machine confrontation caused by too fast pressure regulation and poor treatment effect caused by too slow pressure regulation. Meanwhile, the embodiments of the present application can intelligently learn the start-up working pressure most suitable for the user, improve the comfort of the user using the breathing machine, improve the use compliance of the user, and thereby improve the treatment effect of the breathing machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of device control, in particular to a pressure control method and device, a breathing machine and a storage medium. BACKGROUND

[0002] Sleep breathing disorder is a common respiratory disease that occurs during sleep, including snoring, sleep apnea hypopnea syndrome, etc. In the treatment process of adult patients with sleep breathing disorder, breathing machines are commonly used for auxiliary treatment, and the rationality of breathing machine pressure setting and the comfort of full-automatic adjustment mode pressure adjustment are important indicators affecting the treatment effect.

[0003] In the prior art, there are mainly two modes for breathing machine pressure setting: one is a single level mode, which outputs a preset fixed value during operation, and the user needs to manually adjust the pressure of the breathing machine through other devices, without considering the comfort of the user. The other is a full-automatic adjustment mode, in which the user can preset the minimum treatment pressure, the maximum treatment pressure and the initial treatment pressure, wherein the initial treatment pressure is manually set according to historical use or clinical experience. During each operation, the initial treatment pressure is used to start operation, and after a respiratory event occurs, the pressure of the breathing machine is adjusted according to the corresponding respiratory event.

[0004] Although the full-automatic adjustment mode realizes the function of automatic pressure adjustment, it adjusts the pressure with a fixed step size without considering the sensitivity and adaptability of different people to pressure fluctuations. Rapid pressure adjustment can lead to man-machine confrontation and affect the user's sleep, while slow pressure adjustment cannot completely solve the problem of sleep breathing disorder, thereby causing poor user compliance and affecting the treatment effect of the breathing machine. SUMMARY

[0005] To solve the above technical problems, the present application provides a pressure control method, device, breathing machine and storage medium, which can monitor the user's respiratory information in real time, determine the respiratory event and severity according to the user's respiratory information, and adjust the pressure adjustment gear during use, thereby improving the comfort and treatment effect of the user using the breathing machine.

[0006] In a first aspect, the present application provides a pressure control method applied to a breathing machine, the method comprising:

[0007] obtaining respiratory information of a user;

[0008] determining a respiratory event and event severity according to the respiratory information;

[0009] obtaining an intelligent pressure adjustment gear;

[0010] determining a target working pressure according to the respiratory event, the event severity and the intelligent pressure regulating gear;

[0011] adjusting a current working pressure of the ventilator to the target working pressure.

[0012] In an embodiment, the respiratory information comprises pressure waveform and flow waveform, the respiratory information comprises pressure waveform and flow waveform, the respiratory event comprises at least one of apnea event, hypopnea event, flow limitation event and snoring event, and the determining of the respiratory event according to the respiratory information comprises:

[0013] if a real-time value of the flow waveform is 0 within a first preset time, determining the respiratory event as the apnea event;

[0014] if an amplitude of the flow waveform is continuously less than a first preset amplitude within a second preset time, determining the respiratory event as the hypopnea event;

[0015] if the amplitude of the flow waveform is continuously less than a second preset amplitude within a third preset time, and the amplitude of the flow waveform is continuously greater than the first preset amplitude within the third preset time, determining the respiratory event as the flow limitation event;

[0016] obtaining all peak values and all trough values of the pressure waveform within a fourth preset time;

[0017] if each of the peak values is greater than a first preset pressure threshold, and each of the trough values is less than a second preset pressure threshold, determining the respiratory event as the snoring event.

[0018] In an embodiment, the determining of the target working pressure according to the respiratory event, the event severity and the intelligent pressure regulating gear comprises:

[0019] assigning a corresponding weight to each of the respiratory events;

[0020] when the current working pressure of the ventilator is less than a preset working threshold, calculating a first product value of the corresponding weight of the respiratory event, the event severity, the intelligent pressure regulating gear, the preset working threshold and a first increase ratio;

[0021] determining the first product value as the target working pressure;

[0022] when the current working pressure of the ventilator is greater than or equal to the preset working threshold, calculating a second product value of the corresponding weight of the respiratory event, the event severity, the intelligent pressure regulating gear, the preset working threshold and a second increase ratio;

[0023] determining the second product value as the target working pressure.

[0024] In an embodiment, the method further comprises:

[0025] recording a real-time working pressure of the ventilator, and generating a historical working parameter according to the real-time working pressure;

[0026] updating the initial working pressure of the ventilator according to the historical working parameter.

[0027] In an embodiment, the step of generating a historical working parameter according to the real-time working pressure comprises:

[0028] dotting recording the real-time working pressure at a preset frequency to obtain dotting recording data;

[0029] calculating the dotting recording data within a preset time length to generate a historical working parameter.

[0030] In an embodiment, the method further comprises:

[0031] if the ventilator is started for the first time, setting a start-up working pressure of the ventilator as a preset minimum working pressure;

[0032] if the ventilator is not started for the first time, setting the start-up working pressure of the ventilator as the initial working pressure.

[0033] In a second aspect, an embodiment of the present application provides a pressure control device applied to a ventilator, the device comprising:

[0034] a first obtaining module configured to obtain breathing information of a user;

[0035] a first determining module configured to determine a breathing event and an event severity according to the breathing information;

[0036] a second obtaining module configured to obtain an intelligent pressure regulating gear;

[0037] a second determining module configured to determine a target working pressure according to the breathing event, the event severity, and the intelligent pressure regulating gear;

[0038] an adjusting module configured to adjust a current working pressure of the ventilator to the target working pressure.

[0039] In a third aspect, an embodiment of the present application provides a ventilator comprising a device body, a memory, and a processor, wherein the memory stores a computer program, and the computer program performs the pressure control method provided in the first aspect when the processor runs.

[0040] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium storing a computer program, which, when executed on a processor, performs the pressure control method provided in the first aspect.

[0041] The embodiments of the present application have the following beneficial effects:

[0042] The ventilator provided by the embodiments of the present application can monitor the respiratory information of a user in real time, judge the respiratory event and severity according to the respiratory information of the user, intelligently calculate the target working pressure according to the respiratory event type, event severity and intelligent pressure regulating gear, and automatically adjust the working pressure of the ventilator according to the corresponding adjustment. The present application can intelligently calculate the pressure regulating pressure corresponding to the respiratory event according to the respiratory event and severity during use, and automatically adjust the working pressure of the ventilator according to the corresponding adjustment by setting the intelligent pressure regulating gear, thereby avoiding the human-machine confrontation caused by too fast pressure regulation and the poor treatment effect caused by too slow pressure regulation. The embodiments of the present application improve the comfort of the user using the ventilator, and also improve the use compliance of the user, thereby improving the treatment effect of the ventilator. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0044] Figure 1 A flowchart of a pressure control method provided by the embodiments of the present application is shown;

[0045] Figure 2 A structural schematic diagram of a pressure control device provided by the embodiments of the present application is shown;

[0046] Figure 3 A structural schematic diagram of a ventilator provided by the embodiments of the present application is shown.

[0047] Icon: 200-pressure control device; 201-first acquisition module; 202-first determination module; 203-second acquisition module; 204-second determination module; 205-adjustment module;

[0048] 300-ventilator; 301-device body; 302-processor; 303-memory. DETAILED DESCRIPTION

[0049] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings of the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0051] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0052] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship of the product in use, only for the convenience of describing the present application and simplifying the description, and it is not intended to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0053] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0054] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0055] Embodiment 1

[0056] Please refer to Figure 1 The present embodiment provides a pressure control method applied to a breathing machine, and the following will be a detailed description of the method including various steps.

[0057] S101, obtaining the breathing information of the user, the breathing information including pressure waveform and flow waveform.

[0058] During operation, the ventilator monitors the user's pressure and flow waveforms in real time. This allows the system to obtain the user's pressure and flow values ​​at every moment while using the ventilator. Furthermore, changes in the user's respiratory information can be observed by examining the waveforms, such as peaks, troughs, and amplitude, to determine respiratory events. For details, please refer to step S102.

[0059] S102, determine the respiratory event and its severity based on the respiratory information;

[0060] In one implementation, determining a respiratory event based on the respiratory information includes:

[0061] The respiratory events include at least one of the following: apnea events, hypopnea events, airflow limitation events, and snoring events;

[0062] If the real-time value of the flow waveform is 0 within a first preset time, then the breathing event is determined to be the apnea event.

[0063] In this embodiment, the real-time value of the flow waveform is 0 within a first preset time period, meaning that the real-time value of the flow waveform at any point within the preset time period is 0. Generally speaking, when the real-time value of the flow waveform is 0, it can be considered that the user's breathing airflow has stopped, and breathing airflow cessation for more than 10 seconds can be judged as apnea. Because each user's individual conditions are different, the first preset time is not specifically limited in this embodiment, and is usually 10-20 seconds.

[0064] If the amplitude of the flow waveform is continuously less than the first preset amplitude within a second preset time period, then the respiratory event is determined to be the hypoventilation event.

[0065] A hypoventilation event is defined as a decrease in a user's respiratory airflow intensity over a certain period of time. Hypopnea events frequently occur throughout the night in users with sleep-disordered breathing, sometimes multiple times per hour. This is reflected in the real-time flow waveform acquired by the ventilator; a hypoventilation event is identified when the amplitude of the flow waveform remains below a first preset amplitude for a second preset time period. In one implementation, the first preset amplitude can be 50% of the flow waveform amplitude during normal breathing.

[0066] If the amplitude of the flow waveform is continuously less than the second preset amplitude within a third preset time period, and the amplitude of the flow waveform is continuously greater than the first preset amplitude within a third preset time period, then the breathing event is determined to be the airflow restriction event.

[0067] Similarly, when the user's respiratory airflow intensity is lower than the normal respiratory intensity but higher than the first preset amplitude, it is determined that a flow limitation event occurs. The second preset amplitude can be set to the flow waveform amplitude during normal breathing or slightly lower than the flow waveform amplitude during normal breathing, such as 80% of the flow waveform amplitude during normal breathing.

[0068] All peak values and all trough values of the pressure waveform within a fourth preset time are obtained; if each of the peak values is greater than a first preset pressure threshold and each of the trough values is less than a second preset pressure threshold, it is determined that the respiratory event is the snoring event.

[0069] When the user has a snoring event, the pressure waveform detected by the ventilator will have a large fluctuation, at which time the peak value and the trough value of the pressure waveform within the fourth preset time are recorded, and the peak value is compared with the first preset pressure threshold and the trough value is compared with the second preset pressure threshold. If each of the peak values is greater than the first preset pressure threshold and each of the trough values is less than the second preset pressure threshold, it is determined that the respiratory event is the snoring event.

[0070] In an embodiment, the step of determining the event severity according to the respiratory information comprises:

[0071] The event severity is determined according to the duration of the respiratory event.

[0072] In the same time, the longer the duration of the respiratory event, the higher the event severity, and the more dangerous it is to the user. In the embodiment of the present application, in order to facilitate subsequent pressure adjustment, the event severity can be determined by the duration of the respiratory event multiplied by a preset parameter, and finally a numerical value is obtained.

[0073] S103, obtaining an intelligent pressure adjustment gear;

[0074] The intelligent pressure adjustment gear can be set by the user in real time during use, so as to facilitate the user to adjust the pressure adjustment gear most suitable for his own condition.

[0075] S104, determining a target working pressure according to the respiratory event, the event severity, and the intelligent pressure adjustment gear;

[0076] In an embodiment, the step of determining the target working pressure according to the respiratory event, the event severity, and the intelligent pressure adjustment gear comprises:

[0077] Each of the respiratory events is given a corresponding weight;

[0078] When the current working pressure of the ventilator is less than the preset working threshold, a first product value of the corresponding weight of the respiratory event, the event severity, the intelligent pressure regulating gear, the preset working threshold and a first increase ratio is calculated;

[0079] The first product value is determined as the target working pressure;

[0080] When the current working pressure of the ventilator is greater than or equal to the preset working threshold, a second product value of the corresponding weight of the respiratory event, the event severity, the intelligent pressure regulating gear, the preset working threshold and a second increase ratio is calculated;

[0081] The second product value is determined as the target working pressure.

[0082] In the calculation process, the respiratory event cannot directly participate in the calculation, so in this embodiment, the corresponding weight is given to each respiratory event. In this way, in the calculation process, all the quantities participating in the calculation are numerical values, and a determined result can be finally obtained.

[0083] In an implementation, the preset working threshold can be set to 10 cmH2O. The above method of determining the target working pressure is applicable to single-level ventilators and double-level ventilators, but the judgment methods are slightly different: if applied to a single-level ventilator, the preset working threshold is the continuous positive airway pressure (CPAP) of the single-level ventilator; if applied to a double-level ventilator, the preset working threshold is the inspiratory positive airway pressure (IPAP) of the double-level ventilator. In an implementation, the first increase ratio is 2, and the second increase ratio is 1.

[0084] S105, adjusting the current working pressure of the ventilator to the target working pressure.

[0085] In an implementation, the step of generating the historical working parameter according to the real-time working pressure comprises:

[0086] The real-time working pressure is recorded at a preset frequency to obtain dot recording data;

[0087] The dot recording data within a preset time length is calculated to generate a historical working parameter.

[0088] In an implementation, the pressure control method provided in this embodiment further comprises:

[0089] record the real-time working pressure of the ventilator, generate a historical working parameter according to the real-time working pressure; and update the initial working pressure of the ventilator according to the historical working parameter.

[0090] The step of generating a historical working parameter according to the real-time working pressure comprises: recording the real-time working pressure at a preset frequency to obtain dotting record data; and calculating the dotting record data within a preset time length to generate a historical working parameter.

[0091] In an embodiment, if the ventilator is started for the first time, the starting working pressure of the ventilator is set as a preset minimum working pressure; if the ventilator is started for the second time, the starting working pressure of the ventilator is set as the initial working pressure.

[0092] In the prior art, the ventilator generally starts working from a fixed value and then adjusts the pressure according to a breathing event. If the starting working pressure preset when the ventilator is manufactured is not suitable for a user, or the physiological condition of the user changes after a period of treatment, the fixed value starting is not suitable for the current user.

[0093] In the embodiment of the present application, the ventilator is pre-set with a minimum treatment pressure and a maximum treatment pressure when it is manufactured. When the ventilator is started for the first time, the preset minimum working pressure is used, and the above-mentioned pressure adjusting method is used to adjust the pressure during working. In the subsequent use of the ventilator, the real-time working pressure is recorded in the form of dotting at a preset frequency within a preset time length each time from starting to shutting down, and is stored in the memory in the order from small to large, and the real-time working pressure recorded is calculated according to a fixed period, and the final calculation result is used as the initial working pressure for the next time of starting. The calculation methods include but are not limited to taking the mean value, weighted calculation, or using the algorithm built in the processor. It should be noted that when the ventilator is used for many times, the initial working pressure is the value calculated by weighting the initial working pressures calculated in the previous times according to a certain weight. In this way, when the ventilator is used for a period of time, the working pressure most suitable for the user can be intelligently matched, and the comfort of the user is improved.

[0094] The pressure control method provided in the embodiment has at least the following beneficial effects:

[0095] The pressure control method provided by the embodiments of the present application can determine the target pressure by monitoring the breathing information of a user in real time and judging the breathing event and severity according to the breathing information of the user. The present application can intelligently calculate the pressure regulating degree according to the breathing event and severity during use and automatically give the corresponding pressure regulation, thereby avoiding the human-machine confrontation caused by too fast pressure regulation and the poor treatment effect caused by too slow pressure regulation. Meanwhile, the breathing machine provided by the embodiments of the present application can intelligently learn the start-up working pressure most suitable for the user, thereby improving the comfort of the user using the breathing machine and improving the use compliance of the user, and thus improving the treatment effect of the breathing machine.

[0096] Embodiment 2

[0097] The embodiments also provide a pressure control device, applied to a breathing machine.

[0098] Specifically, as shown in Figure 2 ;

[0099] The pressure control device 200 comprises:

[0100] A first acquisition module 201 is configured to acquire breathing information of a user.

[0101] A first determination module 202 is configured to determine a breathing event and event severity according to the breathing information.

[0102] A second acquisition module 203 is configured to acquire an intelligent pressure regulating gear.

[0103] A second determination module 204 is configured to determine a target working pressure according to the breathing event, the event severity and the intelligent pressure regulating gear.

[0104] An adjustment module 205 is configured to adjust the current working pressure of the breathing machine to the target working pressure.

[0105] In an implementation mode, the first acquisition module 201 is further configured to:

[0106] record the real-time working pressure of the breathing machine, and generate a historical working parameter according to the real-time working pressure;

[0107] update the initial working pressure of the breathing machine according to the historical working parameter.

[0108] In an implementation mode, the first acquisition module 201 is further configured to:

[0109] dot record the real-time working pressure at a preset frequency to obtain dot record data;

[0110] calculate the dot record data in a preset time length to generate a historical working parameter.

[0111] In an implementation, the first obtaining module 201 is further configured to:

[0112] If the ventilator is started for the first time, set the start-up working pressure of the ventilator as the preset minimum working pressure.

[0113] If the ventilator is not started for the first time, set the start-up working pressure of the ventilator as the initial working pressure.

[0114] The pressure control device 200 provided by the embodiment can implement the pressure control method provided by the embodiment 1. To avoid repetition, details are not repeated here.

[0115] The pressure control device provided by the embodiment monitors the breathing information of the user in real time, determines the target pressure according to the breathing information of the user, and determines the target pressure according to the breathing event and the severity. The application can intelligently calculate the pressure regulating degree according to the breathing event and the severity during use, and automatically give the corresponding pressure regulation, avoiding the man-machine confrontation caused by the too fast pressure regulation and the poor treatment effect caused by the too slow pressure regulation. At the same time, the ventilator provided by the embodiment can intelligently learn the start-up working pressure most suitable for the user, improve the comfort of the user using the ventilator, and improve the use compliance of the user, thereby improving the treatment effect of the ventilator.

[0116] Embodiment 3

[0117] In addition, the disclosure embodiment provides a ventilator, comprising a memory and a processor, the memory stores a computer program, the computer program executes the pressure control method provided by the embodiment 1 when the processor runs.

[0118] Specifically, referring to Figure 3 , the ventilator 300 comprises a device body 301, a processor 302, and a memory 303.

[0119] In an implementation, the device body 301 comprises but is not limited to a fan, a man-machine interaction page, a flying shuttle, and a key. The user can control the ventilator through the man-machine interaction page and the key, such as setting the intelligent pressure regulating gear by himself.

[0120] In Figure 3In particular embodiments, the bus architecture can include any number of interconnecting buses and bridges, and the various circuitry representative of the processor 302 and the memory 303 that can be linked through a bus architecture can be consolidated in a single chip, a single device, or spread across multiple devices. The bus architecture can also include multiple buses each of which can be of a different variety, if so desired. The bus interface provides an interface to the device body 301. The device body 301 can be a number of elements, including but not limited to a console, a display screen, etc., that provide means for communicating with various other apparatuses over a transmission medium. The processor 302 is responsible for managing the bus architecture and general processing, and the memory 303 can store data used by the processor 302 in executing operational instructions.

[0121] The ventilator 300 provided by the embodiments of the present application can implement the pressure control method provided in Embodiment 1, and thus will not be described herein again to avoid repetition.

[0122] The ventilator provided by the embodiments of the present application can monitor the respiratory information of a user in real time, determine the target pressure according to the respiratory information of the user, and determine the respiratory event and the severity. The present application can intelligently calculate the pressure regulating degree according to the respiratory event and the severity during use, and automatically give the corresponding pressure regulation, thereby avoiding the man-machine confrontation caused by too fast pressure regulation and the poor treatment effect caused by too slow pressure regulation. Meanwhile, the ventilator provided by the embodiments of the present application can intelligently learn the start-up working pressure most suitable for the user, improve the comfort of the user using the ventilator, improve the use compliance of the user, and thus improve the treatment effect of the ventilator.

[0123] Embodiment 4

[0124] The present application also provides a computer readable storage medium, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the pressure control method provided in Embodiment 1.

[0125] In the embodiments, the computer readable storage medium can be a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0126] The computer readable storage medium provided by the embodiments of the present application can implement the pressure control method provided in Embodiment 1, and thus will not be described herein again to avoid repetition.

[0127] It should be noted that, in the present document, the terms "comprises / comprising" or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0128] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned method can be realized by means of software and necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, or optical disk) and includes a number of instructions for causing a terminal (which can be a mobile phone, computer, server, air conditioner, or network device) to execute the methods described in the various embodiments of the present application.

[0129] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the specific embodiments described above, which are merely illustrative rather than limiting, and those of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope of protection of the claims.

Claims

1. A pressure control device, characterized by, The device is applied to a breathing machine, and the device comprises: a first acquisition module configured to acquire breathing information of a user; a first determination module configured to determine a breathing event and an event severity according to the breathing information; a second acquisition module configured to acquire an intelligent pressure regulation gear; a second determination module configured to determine a target working pressure according to the breathing event, the event severity, and the intelligent pressure regulation gear; an adjustment module configured to adjust a current working pressure of the breathing machine to the target working pressure; wherein the determination of the target working pressure according to the breathing event, the event severity, and the intelligent pressure regulation gear comprises: assigning a corresponding weight to each breathing event; when the current working pressure of the breathing machine is less than a preset working threshold, calculating a first product value of the corresponding weight of the breathing event, the event severity, the intelligent pressure regulation gear, the preset working threshold, and a first increase ratio; and determining the first product value as the target working pressure; when the current working pressure of the breathing machine is greater than or equal to the preset working threshold, calculating a second product value of the corresponding weight of the breathing event, the event severity, the intelligent pressure regulation gear, the preset working threshold, and a second increase ratio; and determining the second product value as the target working pressure; the device further comprises: recording a real-time working pressure of the breathing machine, generating a historical working parameter according to the real-time working pressure, and updating an initial working pressure of the breathing machine according to the historical working parameter; if the breathing machine is started for the first time, setting a start-up working pressure of the breathing machine as a preset minimum working pressure; if the breathing machine is not started for the first time, setting the start-up working pressure of the breathing machine as the initial working pressure.

2. The pressure control device of claim 1, wherein The breathing information comprises a pressure waveform and a flow waveform, the breathing event comprises at least one of an apnea event, a hypopnea event, a flow limitation event, and a snoring event, and the determination of the breathing event according to the breathing information comprises: if a real-time value of the flow waveform is 0 within a first preset time, determining that the breathing event is the apnea event; if an amplitude of the flow waveform is continuously less than a first preset amplitude within a second preset time, determining that the breathing event is the hypopnea event; if the amplitude of the flow waveform is continuously less than a second preset amplitude within a third preset time and the amplitude of the flow waveform is continuously greater than the first preset amplitude within the third preset time, determining that the breathing event is the flow limitation event; acquiring all peak values and all trough values of the pressure waveform within a fourth preset time; if each peak value is greater than a first preset pressure threshold and each trough value is less than a second preset pressure threshold, determining that the breathing event is the snoring event.

3. The pressure control device of claim 1, wherein, The determination of the event severity according to the breathing information comprises: determining the event severity according to a duration of the breathing event.

4. The pressure control device of claim 1, wherein The generation of the historical working parameter according to the real-time working pressure comprises: dotting and recording the real-time working pressure at a preset frequency to obtain dotting and recording data. The dot recording data in the preset time length is calculated to generate historical working parameters.

5. A breathing machine characterized by, The ventilator comprises a device body, a memory and a processor, the memory stores a computer program, and the computer program performs the functions of various modules in the pressure control device in any one of claims 1 to 4 when the processor is running.

6. A computer-readable storage medium, characterized in that, The memory stores a computer program, and the computer program performs the functions of various modules in the pressure control device in any one of claims 1 to 4 when the processor is running.

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