Medical ventilation device, control method, and storage medium

Abstract

A medical ventilation device, a control method and a storage medium, when the medical ventilation device is in a high-frequency inhalation stage, a high-frequency oscillation generation device (30) generates high-frequency oscillation of gas in an inhalation branch (20) according to a preset high-frequency oscillation frequency, and the gas is output through the inhalation branch (20) and a patient pipeline (70) under the action of the high-frequency oscillation; when the medical ventilation device is in a high-frequency exhalation stage, the working states of an exhaust device (50) and an electric gas extraction device (60) are adjusted according to set ventilation control parameters and detected patient end pressure, and in the process of adjusting the working states, the working state of one of the exhaust device (50) and the electric gas extraction device (60) is adjusted with reference to the working state of the other device, so that the adjustment of the working states of the two devices does not affect each other, thereby making the ventilation control parameters of the medical ventilation device consistent with the set ventilation control parameters through the adjustment of the working states of the exhaust device (50) and the electric gas extraction device (60), and improving the control precision and stability.

Description

Technical Field

[0001] This invention relates to medical device technology, and more particularly to a medical ventilation device, control method, and storage medium. Background Technology

[0002] Currently, medical ventilation equipment used to assist patients' breathing includes high-frequency ventilators, which have a respiratory rate of 240-1800 breaths per minute to provide patients with more oxygen.

[0003] In the process of providing more oxygen to patients through high-frequency ventilators, it is also necessary to expel gases such as carbon dioxide. Currently, gas expulsion is carried out during the exhalation phase by actively removing gas from the patient's tubing through exhaust devices and electric gas extraction devices. For example, the exhaust device can be a proportional valve, which exhausts gas by opening and closing the proportional valve. The electric gas extraction device can be a turbine, which removes gas from the patient's tubing through negative pressure suction.

[0004] During active ventilation using both the exhaust device and the electric gas extraction device, both devices are controlled based on the collected pressure. This can cause them to interfere with each other during operation, thereby reducing the control accuracy and stability of the medical ventilation equipment. Summary of the Invention

[0005] This invention provides a medical ventilation device, a control method, and a storage medium to improve the control accuracy and stability of the medical ventilation device.

[0006] On one hand, the present invention provides a medical ventilation device, which includes a gas source interface, an inhalation branch, a high-frequency oscillation generating device, a controller, an exhaust device, and an electric gas extraction device;

[0007] The inspiratory branch is connected to the air source interface and the patient tubing connected to the patient's respiratory system, respectively.

[0008] The high-frequency oscillation generating device generates high-frequency oscillations in the gas of the intake branch according to a preset high-frequency oscillation frequency.

[0009] The controller is connected to the inspiratory branch, the high-frequency oscillation generator, the exhaust device, and the electric gas extraction device. When the medical ventilation device is in the high-frequency inspiratory phase, it controls the high-frequency oscillation generator to generate high-frequency oscillations in the gas of the inspiratory branch according to a preset high-frequency oscillation frequency. Under the action of the high-frequency oscillation generated by the high-frequency oscillation generator, the gas is output through the inspiratory branch and the patient tubing. When the medical ventilation device is in the high-frequency expiratory phase, it adjusts the working state of the exhaust device and the working state of the electric gas extraction device according to the set ventilation control parameters and the detected patient end pressure, so as to discharge the gas exhaled by the patient through the patient tubing according to the preset high-frequency oscillation frequency.

[0010] During the adjustment of the working state of the exhaust device and the electric gas extraction device, the working state of one of the devices is adjusted with reference to the working state of the other device.

[0011] On the other hand, the present invention provides a control method for a medical ventilation device, the medical ventilation device comprising a gas source interface, an inspiratory branch, a high-frequency oscillation generator, a controller, an exhaust device, and an electric gas extraction device, wherein the inspiratory branch is connected to the gas source interface and a patient tubing connected to the patient's respiratory system, and the controller is connected to the inspiratory branch, the high-frequency oscillation generator, the exhaust device, and the electric gas extraction device, and the control method is applied to the controller, the control method comprising:

[0012] When the medical ventilation device is in the high-frequency inhalation stage, the high-frequency oscillation generating device is controlled to generate high-frequency oscillation of the gas in the inhalation branch according to the preset high-frequency oscillation frequency, and the gas is output through the inhalation branch and the patient tubing under the action of the high-frequency oscillation generated by the high-frequency oscillation generating device.

[0013] When the medical ventilation device is in the high-frequency exhalation phase, the working state of the exhaust device and the working state of the electric gas extraction device are adjusted according to the set ventilation control parameters and the detected patient end pressure, so as to exhaust the gas exhaled by the patient through the patient tubing according to the preset high-frequency oscillation frequency.

[0014] During the adjustment of the working state of the exhaust device and the electric gas extraction device, the working state of one of the devices is adjusted with reference to the working state of the other device.

[0015] In another aspect, the present invention provides a storage medium storing executable instructions configured to cause a processor to execute the executable instructions to implement the control method of the above-mentioned medical ventilation device.

[0016] The controller in the aforementioned medical ventilation equipment is connected to the inspiratory branch, the high-frequency oscillation generator, the exhaust device, and the electric gas extraction device. During the high-frequency inspiratory phase, the controller controls the high-frequency oscillation generator to produce high-frequency oscillations in the inspiratory branch at a preset frequency. Under the influence of these high-frequency oscillations, the gas is output through the inspiratory branch and the patient tubing. During the high-frequency expiratory phase, the controller adjusts the operating states of the exhaust device and the electric gas extraction device according to the set ventilation control parameters and the detected patient-side pressure. This ensures that the gas exhaled by the patient through the patient tubing is discharged at a preset high-frequency oscillation frequency. During the adjustment of the exhaust device and the electric gas extraction device, the controller adjusts the operating state of one device by referring to the operating state of the other, preventing mutual interference between the two devices. This ensures that the ventilation control parameters of the medical ventilation equipment are consistent with the set parameters, improving the pressure control accuracy and stability of the medical ventilation equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a medical ventilation device provided in an embodiment of this disclosure;

[0019] Figure 2 This is a schematic diagram of the structure of another medical ventilation device provided in an embodiment of this disclosure;

[0020] Figure 3 and Figure 4 These are two schematic diagrams of the preset fitting algorithm provided in the embodiments of this disclosure;

[0021] Figure 5 This is a schematic diagram of the regulating exhaust device and the electric gas extraction device provided in the embodiments of this disclosure;

[0022] Figure 6 This is a schematic diagram showing the driving quantity mapping relationship between the exhaust device and the electric gas extraction device provided in the embodiments of this disclosure;

[0023] Figure 7This is a schematic diagram showing the mapping relationship between the current of the exhaust device and the rotational speed of the electric gas extraction device provided in the embodiments of this disclosure;

[0024] Figure 8 This is a schematic diagram of another medical ventilation device provided in an embodiment of this disclosure;

[0025] Figure 9 This is a flowchart of a control method for a medical ventilation device provided in an embodiment of this disclosure;

[0026] Figure 10 This is a flowchart of another control method for a medical ventilation device provided in this embodiment. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. This invention should not be construed as limited to the provided embodiments. On the contrary, the content described in the embodiments of this invention makes the invention comprehensive and complete, and conveys the concept of the embodiments of this invention to those skilled in the art. Therefore, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this invention.

[0028] It should be noted that, in the embodiments of this disclosure, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a method or server that includes a list of elements includes not only the elements expressly described, but also other elements not expressly listed, or elements inherent to implementing the method or server. Without further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other related elements (e.g., steps in the method or units in the server, such as portions of circuitry, processors, programs, or software, etc.) in the method or server that includes that element.

[0029] For example, the medical ventilation device provided in this disclosure includes a series of apparatuses, but the medical ventilation device provided in this disclosure is not limited to the apparatuses explicitly described. Similarly, the control method of the medical ventilation device provided in this disclosure includes a series of steps, but the control method of the medical ventilation device provided in this disclosure is not limited to the steps described. It should be noted that in the following description, the term "embodiment" refers to a subset of all possible embodiments. However, it is understood that "embodiment" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0030] Before providing a further detailed description of this disclosure, the terms and concepts used herein shall be defined as follows:

[0031] High frequency: refers to a ventilation frequency that is more than 4 times the normal frequency (abbreviated as normal frequency). For example, in China, a frequency of 240-1800 breaths per minute is called high frequency. The U.S. Food and Drug Administration (FDA) defines high frequency as a ventilation frequency greater than 150 breaths per minute.

[0032] High-frequency exhalation phase and high-frequency inhalation phase: These are two phases of medical ventilation equipment. During the high-frequency exhalation phase, the patient is in the process of high-frequency exhalation, during which the gas exhaled by the patient through the patient tubing is expelled. During the high-frequency inhalation phase, the patient is in the process of high-frequency inhalation, during which the medical ventilation equipment generates high-frequency oscillations. Under the action of high-frequency oscillations, gas, especially oxygen, is delivered to the patient's lungs through the patient tubing.

[0033] Preset high pressure and preset low pressure: These are the maximum and minimum pressure values ​​corresponding to medical ventilation equipment, such as the maximum and minimum gas pressure in the patient tubing connected to the inspiratory branch. The gas pressure corresponding to the medical ventilation equipment can change between preset high pressure and preset low pressure as the patient breathes.

[0034] Target average pressure: The average of the preset high pressure and preset low pressure.

[0035] Please see Figure 1 This provides an optional structure for a medical ventilation device according to an embodiment of the present disclosure, including: a gas source interface 10, an inhalation branch 20, a high-frequency oscillation generating device 30, a controller 40, an exhaust device 50, and an electric gas extraction device 60.

[0036] The inspiratory branch 20 is connected to the gas source interface 10 and the patient tubing 70, which is connected to the patient's respiratory system. The gas source interface 10 serves as an inlet for external gas, allowing external gas to be input into the inspiratory branch 20. The gas is then delivered to the patient at the end of the patient tubing via the inspiratory branch 20 and the patient tubing 70, such as to the patient's lungs. The patient tubing 70 can be, but is not limited to, any type of face mask or patient breathing interface, through which gas is delivered to the patient.

[0037] The high-frequency oscillation generating device 30 generates high-frequency oscillation of the gas in the inhalation branch 20 according to a preset high-frequency oscillation frequency. Under the action of the high-frequency oscillation, the gas in the inhalation branch 20 is delivered to the patient at the end of the patient tubing 70. Primarily, it delivers oxygen from the inhalation branch to the patient under the action of the high-frequency oscillation. The preset high-frequency oscillation frequency is an operating parameter of the high-frequency oscillation generating device 30. For example, the high-frequency oscillation frequency can be within the range of 240-1800 times per minute. This embodiment does not limit the specific value of the preset high-frequency oscillation frequency.

[0038] In this embodiment, the gas source interface 10 may include an oxygen source interface and / or an air source interface to input oxygen and / or air into the inhalation branch 20 respectively. The high-frequency oscillation generating device 30 installed on the inhalation branch 20 generates high-frequency oscillation of oxygen and / or air according to a preset high-frequency oscillation frequency, so that oxygen can be delivered to the patient tubing under the action of high-frequency oscillation and reach the patient at the end of the patient tubing.

[0039] For example, one way the high-frequency oscillation generator 30 generates high-frequency oscillation is by adjusting the oxygen flow rate and / or air flow rate during the high-frequency inhalation phase to generate high-frequency oscillation through flow rate regulation. The high-frequency oscillation generator 30 can be, but is not limited to, a proportional solenoid valve, a shut-off valve, an on / off valve, or any other valve capable of adjusting the flow rate, all of which can achieve the purpose of delivering oxygen to the patient. The high-frequency oscillation generator 30 can also use other methods to generate high-frequency oscillation, which will not be described in detail in this embodiment.

[0040] The controller 40 is connected to the inspiratory branch 20, the high-frequency oscillation generator 30, the exhaust device 50, and the electric gas extraction device 60. When the medical ventilation equipment is in the high-frequency inspiratory phase, the controller controls the high-frequency oscillation generator 30 to generate high-frequency oscillations in the inspiratory branch according to a preset high-frequency oscillation frequency. Under the action of the high-frequency oscillation generated by the high-frequency oscillation generator 30, the gas is output through the inspiratory branch 20 and the patient tubing. When the medical ventilation equipment is in the high-frequency expiratory phase, the controller adjusts the working state of the exhaust device 50 and the electric gas extraction device 60 according to the set ventilation control parameters and the detected patient end pressure, so as to discharge the gas exhaled by the patient through the patient tubing according to the preset high-frequency oscillation frequency.

[0041] The high-frequency inhalation phase and the high-frequency exhalation phase are the two working phases of a medical ventilation device. During the high-frequency inhalation phase, oxygen and / or fresh air are provided to the patient. During the process of the patient inhaling oxygen and / or fresh air, gases in the patient's body, especially carbon dioxide, are expelled. These gases condense in the inhalation branch 20. When the medical ventilation device is in the high-frequency exhalation phase, the condensed gas is expelled through the exhaust device 50 and the electric gas extraction device 60, so that the gas in the inhalation branch 20 can be quickly and timely expelled. The gas supply to the patient and the exhaust of waste gas are completed under the control of the controller 40.

[0042] In this embodiment, during the adjustment of the operating states of the exhaust device 50 and the electric gas extraction device 60, the controller 40 adjusts the operating state of one device (exhaust device 50 or electric gas extraction device 60) with reference to the operating state of the other device. For example, the controller 40 adjusts the operating state of the exhaust device 50 based on the set ventilation control parameters and the detected patient-side pressure. While maintaining the exhaust device 50 in one operating state, the controller adjusts the operating state of the electric gas extraction device 60 with reference to the operating state of the exhaust device 50, so that the ventilation control parameters of the medical ventilation equipment are consistent with the set ventilation control parameters under the action of the exhaust device 50 and the electric gas extraction device 60.

[0043] The ventilation control parameter of a medical ventilation device is a parameter that provides ventilation support during the operation of the medical ventilation device. It can be at least one of the oscillation amplitude, mean pressure, minimum pressure, or maximum pressure of the high-frequency oscillation that provides ventilation support. Correspondingly, the set ventilation control parameter is a parameter set by the user that the medical ventilation device is expected to provide ventilation support during operation. It can be at least one or more of the target oscillation amplitude, target mean pressure, preset low pressure, or preset high pressure of the high-frequency oscillation.

[0044] Taking oscillation amplitude and minimum pressure as examples, if the oscillation amplitude of the high-frequency oscillation is the same as or close to the target oscillation amplitude, it indicates that the ventilation control parameters of the medical ventilation device are consistent with the set ventilation control parameters; if the minimum pressure corresponding to the medical ventilation device is the same as or close to the preset low pressure (e.g., the preset low pressure is 0), it indicates that the ventilation control parameters of the medical ventilation device are consistent with the set ventilation control parameters. The average pressure, minimum pressure, and maximum pressure corresponding to the medical ventilation device can be the pressure in the patient tubing, the pressure in the inspiratory branch, etc., and this embodiment does not limit this.

[0045] During the high-frequency expiratory phase, the controller 40 can adjust the operating status of the exhaust device 50 and the electric gas extraction device 60 according to the set ventilation control parameters and the patient end pressure. One adjustment process is as follows:

[0046] The target value is determined based on the preset ventilation control parameters, and the actual value is determined based on the patient end pressure. The target value and the actual value are compared to obtain the correspondence between the target value and the actual value. Based on the correspondence between the target value and the actual value, the working status of the exhaust device 50 and the electric gas extraction device 60 is adjusted.

[0047] The preset ventilation control parameters are the pre-set operating parameters in the medical ventilation equipment, such as the preset low pressure and preset high pressure mentioned above; the patient end pressure is the pressure data during the patient's use of the medical ventilation equipment. The patient end pressure can be obtained by a pressure detector installed at the patient end and expressed as the pressure in the patient tubing or inspiratory branch.

[0048] The target value is the indicator value of the medical ventilation equipment when it is in a target state, such as the target oscillation amplitude of the high-frequency oscillation mentioned above, the target average pressure of the medical ventilation equipment, or any one of the preset low pressure and preset high pressure of the medical ventilation equipment. The actual value is the value of the medical ventilation equipment when it is currently in its working state, such as the oscillation amplitude of the high-frequency oscillation mentioned above, the average pressure of the medical ventilation equipment, or any one of the minimum pressure and maximum pressure of the medical ventilation equipment. The correspondence between the target value and the actual value is obtained by comparing the two. The form of the correspondence can be, but is not limited to, the difference between the target value and the actual value, or the trend of the actual value relative to the target value. In the process of comparing the target value and the actual value, the parameters compared can take the following forms:

[0049] One approach is to compare the target value at a given moment (such as the current moment) with the actual value at the same moment.

[0050] Another approach is to compare the trend of the target value within a time period with the trend of the actual value within the same time period. One of the time periods can be a time period obtained by moving a preset time forward from the current time point as the end time point, so as to adjust the working state of the exhaust device 50 and the electric gas extraction device 60 according to the trend of the change from the historical time to the current time. Of course, other methods can also be used to determine the time period, which will not be described in this embodiment.

[0051] Another form is the difference between the target value at two different times and the difference between the actual value at the same two different times. The comparison relationship is obtained by comparing the differences. In this embodiment, the two times at which the difference is obtained are not limited.

[0052] By comparing any of the three types of parameters mentioned above, the correspondence between the target value and the actual value can be obtained, and then the working state of the exhaust device 50 and the electric gas extraction device 60 can be adjusted according to the correspondence.

[0053] When the medical ventilation device is in the high-frequency expiratory phase, the patient is in the process of exhalation. The patient usually exhales once for every inhalation. Therefore, the medical ventilation device will repeatedly be in the high-frequency expiratory phase. Correspondingly, the adjustment of the working state of the exhaust device 50 and the electric gas extraction device 60 is also a repetitive process. For example, the working state of the exhaust device 50 and the electric gas extraction device 60 can be adjusted at a certain frequency. For example, the working state of the exhaust device 50 and the electric gas extraction device 60 can be adjusted at least at the interval of one high-frequency oscillation cycle.

[0054] In one adjustment cycle, the operating states of the exhaust device 50 and the electric gas extraction device 60 can be adjusted according to preset ventilation control parameters and the patient-end pressure detected within the adjustment cycle. For example, in one adjustment cycle, the operating states of the exhaust device 50 and the electric gas extraction device 60 can be adjusted according to the changes in the patient-end pressure detected within the adjustment cycle, thus allowing multiple adjustments to the operating states of the exhaust device 50 and the electric gas extraction device 60 within one adjustment cycle; or, only one patient-end pressure can be obtained in one adjustment cycle, and then the operating states of the exhaust device 50 and the electric gas extraction device 60 can be adjusted once. The only patient-end pressure obtained in one adjustment cycle can be the patient-end pressure detected at a single moment within the adjustment cycle, such as a preset moment or the pressure when the patient-end pressure is in a stable phase within the adjustment cycle. The only patient-end pressure obtained in one adjustment cycle can also be obtained based on the patient-end pressure detected at multiple moments within the adjustment cycle; this embodiment does not limit this. Of course, the adjustment cycle can be set according to actual needs, and can be set to a fixed or variable time period, or a preset or variable number of oscillation cycles or respiratory cycles, etc.

[0055] Currently, the inspiratory branch in medical ventilation equipment can have two functions: one is to provide oxygen and / or fresh air to the patient, and the other is that the patient's exhaled air can condense in the inspiratory branch. In other words, the inspiratory branch can also perform the function of the expiratory branch. Thus, the exhaust device 50 and the electric gas extraction device 60 can be installed on the inspiratory branch 20, as described above. Figure 1 As shown, during the high-frequency exhalation phase, the gas condensed on the inhalation branch 20 is expelled through the exhaust device 50 and the electric gas extraction device 60.

[0056] Some medical ventilation devices include an inspiratory branch 20 and an expiratory branch 80, such as... Figure 2As shown, the inspiratory branch 20 is used to provide oxygen and fresh air to the patient, and the expiratory branch 80 is connected to the patient's tubing. The patient's exhaled air condenses in the expiratory branch 80 and is expelled through the expiratory branch 80. In order to quickly expel the air in the expiratory branch 80, an exhaust device 50 and an electric gas extraction device 60 can be installed on the expiratory branch 80 to actively expel the air in the expiratory branch 80.

[0057] In medical ventilation devices with exhaust device 50 and electric gas extraction device 60 configured in the above two ways, the controller 40 in the medical ventilation device can adjust the working status of exhaust device 50 and electric gas extraction device 60 in the above ways.

[0058] As can be seen from the above technical solution, the controller 40 in the medical ventilation equipment is connected to the inspiratory branch 20, the high-frequency oscillation generator 30, the exhaust device 50, and the electric gas extraction device 60. When the medical ventilation equipment is in the high-frequency inspiratory phase, the controller controls the high-frequency oscillation generator 30 to generate high-frequency oscillations in the gas of the inspiratory branch 20 according to a preset high-frequency oscillation frequency. Under the action of the high-frequency oscillation generated by the high-frequency oscillation generator 30, the gas is output through the inspiratory branch 20 and the patient tubing. When the medical ventilation equipment is in the high-frequency expiratory phase, the controller adjusts the working state of the exhaust device 50 and the electric gas extraction device 60 according to the set ventilation control parameters and the detected patient end pressure. The system expels gas exhaled by the patient through the patient's tubing at a preset high-frequency oscillation frequency. During the adjustment of the operating states of the exhaust device 50 and the electric gas extraction device 60, the controller 40 adjusts the operating state of one device (exhaust device 50 or electric gas extraction device 60) with reference to the operating state of the other. This ensures that the adjustments of the operating states of the exhaust device 50 and the electric gas extraction device 60 do not interfere with each other. Therefore, by adjusting the operating states of the exhaust device 50 and the electric gas extraction device 60, the ventilation control parameters of the medical ventilation equipment are made consistent with the set ventilation control parameters, improving the pressure control accuracy and stability of the medical ventilation equipment. Specifically, the operating state of either the exhaust device 50 or the electric gas extraction device 60 can be adjusted first, and then the operating state of either device can be adjusted based on the adjusted operating state of either device.

[0059] In this embodiment, the controller 40 adjusts the operating states of the exhaust device 50 and the electric gas extraction device 60 in the following way: the controller 40 adjusts the exhaust device 50 and the electric gas extraction device 60 according to a preset adjustment relationship between the exhaust device and the electric gas extraction device. The preset adjustment relationship between the exhaust device and the electric gas extraction device can indicate the relationship between the operating parameters of the exhaust device and the electric gas extraction device. For example, the adjustment relationship can indicate the relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device, so as to adjust the driving amount of the exhaust device 50 and the driving amount of the electric gas extraction device 60 through the relationship between the driving amounts.

[0060] The relationship between the driving quantity of the exhaust device and the driving quantity of the electric gas extraction device can be a one-to-one adjustment relationship or a many-to-one adjustment relationship. In this way, the controller 40 can adjust the exhaust device and the electric gas extraction device according to the one-to-one adjustment relationship between the driving quantity of the exhaust device and the driving quantity of the electric gas extraction device, or according to the many-to-one adjustment relationship between the driving quantity of the exhaust device and the driving quantity of the electric gas extraction device. The many-to-one adjustment relationship means that multiple driving quantities of the exhaust device correspond to one driving quantity of the electric gas extraction device.

[0061] When the controller 40 adjusts according to the above-described adjustment relationship, it can determine the driving amount of one of the exhaust device 50 and the electric gas extraction device 60 based on preset ventilation control parameters and patient-end pressure. Then, based on the relationship between the driving amount of the exhaust device and the electric gas extraction device, it determines the driving amount of the other device to maintain the driving amount of the exhaust device 50 and the electric gas extraction device 60 at the driving amount determined by the controller 40. The controller can determine the driving amount of one of the exhaust device 50 and the electric gas extraction device 60 based on the preset ventilation control parameters and patient-end pressure by: obtaining a target value based on the preset ventilation control parameters, obtaining an actual value based on the patient-end pressure, and determining the driving amount of one of the exhaust device 50 and the electric gas extraction device 60 based on the correspondence between the target value and the actual value. For a detailed explanation, please refer to the above embodiment.

[0062] After determining the driving amount of the exhaust device 50, the controller 40 can determine the driving amount of the electric gas extraction device 60 according to the above one-to-one adjustment relationship. In this embodiment, the one-to-one adjustment relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device can be a direct proportional relationship. The so-called direct proportional relationship means that when the driving amount of the exhaust device 50 increases, the driving amount of the electric gas extraction device 60 also increases accordingly, so that the driving amount of each electric gas extraction device 60 can only correspond to the driving amount of one exhaust device 50. This method can make the driving amounts of the exhaust device and the electric gas extraction device in a continuous adjustment process, thereby making the pressure control more stable.

[0063] The many-to-one adjustment relationship divides the driving quantity of the electric gas extraction device into multiple stages. The driving quantity of one electric gas extraction device corresponds to the driving quantity of multiple exhaust devices. During the adjustment process, the driving quantity of the electric gas extraction device will automatically switch between different stages according to the driving quantity of the exhaust devices.

[0064] In a many-to-one control relationship, the driving amount of the electric gas extraction device can increase with the increase of the driving amount of the exhaust device. In a one-to-one control relationship, the driving amount of the electric gas extraction device can also increase with the increase of the driving amount of the exhaust device. Thus, when the amount of gas to be discharged is small, the exhaust device and the electric gas extraction device use a smaller driving amount, and when the amount of gas to be discharged is large, the exhaust device and the electric gas extraction device use a larger driving amount. This allows the driving amount to be automatically adjusted with the amount of gas, and also prevents the driving amount of the exhaust device and the electric gas extraction device from being maintained at a large value, thereby reducing the power consumption of the exhaust device and the electric gas extraction device.

[0065] In this embodiment, the controller 40 adjusts according to the above-mentioned one-to-one or many-to-one adjustment relationship in the following ways, including but not limited to:

[0066] In one method, the controller 40 obtains the driving amount of the electric gas extraction device based on the driving amount of the exhaust device and a preset fitting algorithm. The preset fitting algorithm is used to fit a one-to-one or many-to-one adjustment relationship between the exhaust device and the electric gas extraction device. After obtaining the driving amount of the exhaust device based on preset ventilation control parameters and patient-side pressure, the driving amount of the electric gas extraction device is fitted using the preset fitting algorithm. Figure 3 and Figure 4 Two feasible methods for the preset fitting algorithm are shown, among which Figure 3 The preset fitting algorithm shown fits a one-to-one adjustment relationship. Figure 4 The preset fitting algorithm shown can fit a many-to-one adjustment relationship, according to Figure 3 and Figure 4 The preset fitting algorithm shown in any of the attached figures can adjust the driving amount of the electric gas extraction device. For example... Figure 3 and Figure 4 In the preset fitting algorithm shown, the driving quantity of the exhaust device is the current of the exhaust device (in A), the driving quantity of the electric gas extraction device is the rotational speed of the electric gas extraction device, and the minimum driving quantity is the idle speed of the electric gas extraction device (in r / min). Figure 4 The different stages shown represent the rotational speeds of the electric gas extraction device at different speeds. Figure 3 and Figure 4 The preset fitting algorithm shown can adjust the current of the exhaust device and the rotation speed of the electric gas extraction device.

[0067] Alternatively, the controller 40 can look up the driving quantity of the electric gas extraction device corresponding to the driving quantity of the exhaust device in a preset driving quantity correspondence table. The preset driving quantity correspondence table records the one-to-one or many-to-one adjustment relationship between the driving quantities of the exhaust device and the electric gas extraction device. The driving quantity of the electric gas extraction device is obtained by looking up the table. The one-to-one or many-to-one adjustment relationship in the preset driving quantity correspondence table can be a correspondence established based on the historical working status of the exhaust device and the electric gas extraction device, or an offline driving quantity correspondence table obtained by debugging the medical ventilation equipment. In this way, the driving quantity of the electric gas extraction device can be obtained by offline table lookup during the adjustment process.

[0068] In this embodiment, when the controller 40 adjusts the exhaust device and the electric gas extraction device, the controller 40 can send drive signals to the exhaust device and the electric gas extraction device to adjust the drive amount of the two devices. For the exhaust device, the drive signal can be any one of drive current, drive voltage, and PWM (Pulse Width Modulation) signal, and the drive amount is any parameter that can change the opening of the exhaust device, such as current, voltage, and the duty cycle of the PWM signal. The opening of the exhaust device determines the exhaust volume of the exhaust device.

[0069] For an electric gas extraction device, the driving signal can be any one of driving current, driving voltage, PWM signal, and driving speed. The driving quantity is any parameter that can change the speed of the electric gas extraction device, such as current, voltage, the duty cycle of the PWM signal, and speed. The speed of the electric gas extraction device determines the exhaust volume of the electric gas extraction device. The electric gas extraction device can be a turbine negative pressure device. By changing the speed of the turbine negative pressure device through the driving quantity, the higher the speed, the greater the negative pressure attraction, and the greater the exhaust volume.

[0070] Using the driving force of the exhaust device as the current and the driving force of the electric gas extraction device as the rotational speed, the adjustment process of this embodiment will be described. The controller in the medical ventilation equipment may include a pressure controller, an opening controller, and a rotational speed controller. The opening controller is used to adjust the driving force of the exhaust device, and the rotational speed controller is used to adjust the driving force of the electric gas extraction device. Figure 5 As shown, the process is as follows:

[0071] First, the pressure controller determines the target value based on preset ventilation control parameters and obtains the actual value based on the patient's pressure. For example, if the target value is... Figure 5 The target average pressure, the actual value is Figure 5The average pressure is obtained based on the oscillation amplitude of the high-frequency oscillation, which is the oscillation amplitude generated during the patient's inhalation and exhalation using the medical ventilation device. It is related to the pressure at the patient end. The pressure controller performs closed-loop feedback between the target value and the actual value to obtain the correspondence between the target value and the actual value used to control the driving amount of the exhaust device, such as the pressure difference.

[0072] The pressure controller can determine the target current of the exhaust device based on the correspondence between the target value and the actual value, such as the pressure difference, or output the pressure difference to the opening controller, which then determines the target current of the exhaust device based on the pressure difference. The opening controller adjusts the current of the exhaust device to the target current to adjust the opening size of the exhaust device. The speed controller determines the target speed of the electric gas extraction device based on the target current and the adjustment relationship between the target value and the actual value, and adjusts the current speed of the electric gas extraction device to the target speed.

[0073] During the adjustment process of the opening controller and speed controller, the pressure controller will continue to determine whether the actual value matches the target value (e.g., the actual value is the same as the target value). If they match, the adjustment will stop, and the current current of the exhaust device and the current speed of the electric gas extraction device will remain unchanged. If they do not match, the current current of the exhaust device and the current speed of the electric gas extraction device will continue to be adjusted.

[0074] The pressure controller, opening controller, and speed controller described above regulate the current of the exhaust device and the speed of the electric gas extraction device, ensuring that the average pressure of the medical ventilation equipment is maintained at the target average pressure. The functions of the pressure controller, opening controller, and speed controller can be integrated into a single controller, allowing one controller to regulate both the current of the exhaust device and the speed of the electric gas extraction device; this will not be elaborated upon in this embodiment.

[0075] The above embodiment illustrates that the controller 40 adjusts the driving amount of the exhaust device and the driving amount of the electric gas extraction device according to the adjustment relationship. The controller 40 can also adjust the exhaust device and the electric gas extraction device in other ways, such as the following:

[0076] The controller 40 can first adjust the drive quantity of one of the exhalation device and the electric gas extraction device, and only begin adjusting the drive quantity of the other device when the drive quantity of the adjusted device exceeds a preset drive quantity. For example, the drive quantity of the exhalation device can be adjusted first, and only when the drive quantity of the exhalation device exceeds a preset drive quantity (such as the maximum drive quantity of the exhalation device) can the drive quantity of the electric gas extraction device be adjusted. The noise and power consumption of the electric gas extraction device may be greater than those of the exhalation device. If the drive quantity of the exhalation device can meet the exhalation requirements of the high-frequency exhalation phase, there is no need to turn on the electric gas extraction device or increase its drive quantity. Even if it is necessary to turn on the electric gas extraction device or increase its drive quantity, it can be kept at a relatively small drive quantity to reduce the noise and power consumption of the electric gas extraction device.

[0077] The controller adjusts the drive volume of the exhaust device by determining the drive volume based on preset ventilation control parameters and patient-side pressure. The determination process is detailed in the above embodiment and will not be elaborated further here. During the process of controlling the exhaust device's operation with the determined drive volume, the ventilation control parameters of the medical ventilation equipment can be continuously monitored. If the ventilation control parameters of the medical ventilation equipment are inconsistent with the set ventilation control parameters, the patient-side pressure is re-acquired, and the drive volume of the exhaust device is determined again based on the preset ventilation control parameters and patient-side pressure. If, during repeated adjustments, the drive volume of the exhaust device exceeds the preset drive volume, and the ventilation control parameters of the medical ventilation equipment still do not reach the set ventilation control parameters, the electric gas extraction device is activated to exhaust gas through both the exhaust device and the electric gas extraction device, or the drive volume of the electric gas extraction device is increased to increase exhaust gas. If, after adjusting the drive volume of the exhaust device, the ventilation control parameters of the medical ventilation equipment are consistent with the set ventilation control parameters, and the drive volume of the exhaust device is not greater than the preset drive volume, the adjustment of the drive volume of the exhaust device is stopped, and the electric gas extraction device does not need to be activated.

[0078] Of course, the controller 40 can also first adjust the driving amount of the electric gas extraction device, and then start adjusting the driving amount of the exhaust device when the driving amount of the electric gas extraction device is greater than the preset driving amount. However, it should be noted that in this method of adjustment, the exhaust device needs to open an opening (e.g., a preset driving amount corresponds to an opening angle of the exhaust device opening and remains unchanged before adjusting its driving amount) so that the electric gas extraction device can provide outward suction to the exhaust device. Under the action of outward suction, the gas output through the opening of the exhaust device will be accelerated outward. The adjustment of the driving amount of the electric gas extraction device can also be based on preset ventilation control parameters and patient end pressure. If the adjustment of the driving amount of the electric gas extraction device has reached the preset driving amount, but further adjustment is still needed, the adjustment of the driving amount of the electric gas extraction device can be stopped and the driving amount of the exhaust device can be adjusted instead. This process is similar to the above method of first adjusting the driving amount of the exhaust device and then adjusting the driving amount of the electric gas extraction device, and will not be elaborated here.

[0079] Increasing the driving force of the electric gas extraction device leads to increased noise and power consumption. Furthermore, repeated adjustments to the driving force reduce its lifespan, especially when the driving force is maintained at its maximum. Additionally, the price of the electric gas extraction device is significantly higher than that of the exhaust device. Therefore, it is advisable to prioritize adjusting the driving force of the exhaust device before adjusting the driving force of the electric gas extraction device.

[0080] In this embodiment, another way for the controller 40 to adjust the working state of the exhaust device and the electric gas extraction device is as follows: if the driving amount of the exhaust device is within the first driving amount range, the controller 40 controls the electric gas extraction device to be in the first working state; if the driving amount of the exhaust device is within the second driving amount range, the controller 40 controls the electric gas extraction device to be in the second working state.

[0081] The maximum value of the first driving quantity range is less than the minimum value of the second driving quantity range, and the power consumption of the electric gas extraction device in the first and second working states shows an increasing trend. The working state of the electric gas extraction device is controlled by the driving quantity range of the exhaust device, so that the loss of the electric gas extraction device increases with the increase of the driving quantity of the exhaust device. In this way, when the driving quantity of the exhaust device is within the first driving quantity range, the loss of the electric gas extraction device can be kept within a small range, thus reducing power consumption.

[0082] One control method for the controller 40 to control the working state of the electric gas extraction device according to the range of the driving quantity of the exhaust device is as follows: if the driving quantity of the exhaust device is within the first driving quantity range, the controller 40 controls the driving quantity of the electric gas extraction device to be within the third driving quantity range corresponding to the first working state; if the driving quantity of the exhaust device is within the second driving quantity range, the controller 40 controls the driving quantity of the electric gas extraction device to be within the fourth driving quantity range corresponding to the second working state; the driving quantity of the electric gas extraction device in the first working state is less than the driving quantity in the second working state.

[0083] Depending on the range of the exhaust device's driving amount, the driving amount of the electric gas extraction device can be controlled using the aforementioned adjustment relationship or other methods. For example, adjusting the working state of the exhaust device and the electric gas extraction device involves their coordination logic and respective adjustment intensity, which affects the noise, power consumption, and lifespan of the medical ventilation equipment. The noise of the medical ventilation equipment mainly comes from the impact of the exhaust device's opening and closing process and the rotation of the electric gas extraction device; the faster the rotation, the higher the power consumption. To address this issue, this embodiment sets up the following... Figure 6 The driving quantity mapping relationship between the exhaust device and the electric gas extraction device is shown (which can also be regarded as one of the above-mentioned adjustment relationships).

[0084] exist Figure 6 The driving force mapping of the exhaust device and the electric gas extraction device is divided into three regions: low speed region, speed regulation region and saturation region. In the low-speed zone, the main focus is on adjusting the driving volume of the exhaust device. The driving volume of the electric gas extraction device is at a relatively small level (such as the minimum driving volume) or zero (i.e., the electric gas extraction device). Therefore, in the low-speed zone, the electric gas extraction device is either stopped or in standby mode to reduce power consumption and noise caused by its rotation. In the speed-adjustment zone, the exhaust pressure during the high-frequency expiratory phase is higher than that in the low-speed zone. In this zone, the driving volumes of both the exhaust device and the electric gas extraction device are adjusted. The relationship between these adjustments can be, but is not limited to, the electric gas extraction device's driving volume increasing as the exhaust device's driving volume increases, thus amplifying the exhaust capacity of the exhaust device through the electric gas extraction device. In the saturation zone, the electric gas extraction device's driving volume is adjusted to its maximum. The exhaust device's driving volume is adjusted according to preset ventilation control parameters and patient-side pressure to increase the opening size and thus improve exhaust capacity. The purpose of setting up the saturation zone is to reduce noise from the exhaust device. The exhaust device's driving volume will only be further increased when the pressure needs to be further reduced even at its maximum driving volume.

[0085] Using the driving force of the exhaust device as the current and the driving force of the electric gas extraction device as the speed, the corresponding low-speed zone, speed regulation zone, and saturation zone are shown in the diagram below. Figure 7 As shown, in the low-speed range, the main adjustment is the current of the exhaust device, and the speed of the electric gas extraction device is at its minimum speed (V). 怠速 Alternatively, the rotation can be stopped; in the speed regulation zone, the current of the exhaust device and the speed of the electric gas extraction device are adjusted, and the speed will increase with the increase of the current. In the speed regulation zone, the speed of the electric gas extraction device is adjusted between the minimum speed and the maximum speed; in the saturation zone, the speed of the electric gas extraction device is maintained at the maximum speed (Vmax), and the current of the exhaust device is adjusted to increase the exhaust capacity.

[0086] In actual control, the range of drive quantity of the exhaust device can include at least three drive quantity ranges, and the corresponding working state of the electric gas extraction device can have at least three working states. The power consumption of these three working states will increase with the increase of the drive quantity of the exhaust device, so as to achieve precise control of the exhaust device and the electric gas extraction device through multiple drive ranges and multiple working states, thereby improving control accuracy and the stability of pressure control.

[0087] For example, the exhaust device has three driving ranges: a first driving range, a second driving range, and a third driving range. The relationship between these three driving ranges is that the maximum value of the first driving range is less than the minimum value of the second driving range, and the maximum value of the second driving range is less than the minimum value of the third driving range. Correspondingly, the electric gas extraction device has three operating states: a first operating state, a second operating state, and a third operating state. The relationship between these three operating states is that the power consumption of the electric gas extraction device increases in the first, second, and third operating states. Based on this, the controller 40 adjusts the operating states of the exhaust device and the electric gas extraction device as follows: if the driving range of the exhaust device is within the first driving range, the controller 40 controls the electric gas extraction device to be in the first operating state; if the driving range of the exhaust device is within the second driving range, the controller 40 controls the electric gas extraction device to be in the second operating state; and if the driving range of the exhaust device is within the third driving range, the controller 40 controls the electric gas extraction device to be in the third operating state.

[0088] One point to note here is that when the exhaust device's drive quantity corresponds to three drive quantity ranges or two drive quantity ranges, the division of the three drive quantity ranges and the division of the two drive quantity ranges may differ. For example, if the exhaust device's drive quantity is between the first and second drive quantity, and the first drive quantity is 0 or the minimum drive quantity, and the second drive quantity is the maximum drive quantity, then if it corresponds to two drive quantity ranges, it can be divided into two drive quantity ranges from the first to the second drive quantity; if it corresponds to three drive quantity ranges, it can be divided into three drive quantity ranges from the first to the second drive quantity, or it can be divided into two drive quantity ranges from the first to the third drive quantity, with the third drive quantity being one of the drive quantities between the first and second drive quantities. If it corresponds to three drive quantities, it can be based on two drive quantity ranges plus one drive quantity range from the third to the second drive quantity. Other forms of drive quantity ranges will not be explained here. The division of the working states of the electric gas extraction device is similar to that of the exhaust device's drive quantity, and will not be detailed here. Of course, in addition to dividing into three drive quantity ranges and three working states, it can also be divided into other required numbers of drive quantity ranges and working states according to actual needs.

[0089] As can be seen from the above technical solution, the controller 40 can adjust the working state of the electric gas extraction device according to the driving amount of the exhaust device, thereby reducing the noise and power consumption caused by the electric gas extraction device and improving the service life of the electric gas extraction device by prioritizing the adjustment of the driving amount of the exhaust device.

[0090] Please see Figure 8 This utilizes an optional structure in a medical ventilation device provided by an embodiment of the present disclosure, in the above-described... Figure 1 Based on the medical ventilation equipment shown, it may further include: a data acquisition device 90, which acquires the pressure at the patient end. For example, the data acquisition device 90 can be located in the inspiratory branch, acquiring the pressure in the inspiratory branch as the patient end pressure; if the medical ventilation equipment also includes the aforementioned expiratory branch 80, then the data acquisition device 90 can also be located in either the inspiratory or expiratory branch, acquiring the pressure in the branch as the patient end pressure.

[0091] The corresponding controller determines the target value based on the set ventilation control parameters, and controls the working parameters of the exhaust device to adjust its working state based on the patient end pressure and target value collected by the acquisition device. The controller also controls the working parameters of the electric gas extraction device to adjust its working state based on the working parameters of the exhaust device. The working parameters of the exhaust device and the electric gas extraction device can be the aforementioned driving quantities, such as current, voltage, etc. The process of the controller controlling the exhaust device and the electric gas extraction device is described in the above process of adjusting the driving quantities, and will not be detailed here.

[0092] For the aforementioned medical ventilation equipment, one optional structure for the exhaust device is as follows: the exhaust device includes a switching element and a drive device for controlling the opening and closing of the switching element. If the medical ventilation equipment only includes an inspiratory branch, the switching element can be located in the inspiratory branch to block the inspiratory branch; if the medical ventilation equipment includes both an inspiratory branch and an expiratory branch, the switching element can be located in the expiratory branch to block the expiratory branch.

[0093] The switching element is designed to block the connection between the branch containing the switching element and the atmosphere during the high-frequency inhalation phase of the medical ventilation equipment, thus allowing gas to be delivered to the patient. During the high-frequency exhalation phase of the medical ventilation equipment, the switching element connects the branch containing the switching element to the atmosphere, allowing gas in the patient's tubing to be expelled through the switching element.

[0094] For the drive device, it controls the switch element to open during the high-frequency exhalation phase of the medical ventilation equipment so that the branch where the switch element is located can be connected to the atmosphere; and controls the switch element to close during the high-frequency inhalation phase of the medical ventilation equipment so as to block the connection between the branch where the switch element is located and the atmosphere.

[0095] The driving device can be a motor that provides power to the switching element. For example, the driving device can be a voice coil motor capable of linear bidirectional motion. The voice coil motor drives the switching element, and because it is capable of linear bidirectional motion, it can output force proportional to the current, quickly controlling the opening and closing of the switching element. When the switching element is open, it connects to the atmosphere; when closed, it blocks the connection. Furthermore, a certain negative pressure is generated at the moment the switching element opens, which can more effectively expel gas without being affected by gas path resistance, tidal volume, or ventilation frequency, ensuring that the average pressure does not increase due to slow gas expulsion caused by these factors.

[0096] In this embodiment, the process by which the controller 40 and the drive device control the switching element is as follows:

[0097] When the medical ventilation device is in the high-frequency expiratory phase, the controller 40 sends a drive signal to the drive device according to preset ventilation control parameters and patient-side pressure. The drive device controls at least one of the opening angle, opening frequency, and opening duration of the switching element according to the drive signal, so as to achieve active exhaust and control of exhaust volume by controlling at least one of the opening angle, opening frequency, and opening duration.

[0098] The opening angle indicates the amount of opening. A larger opening angle means a larger connection between the branch containing the switching element and the atmosphere, resulting in a larger exhaust volume. Conversely, a smaller opening angle means a smaller connection between the branch containing the switching element and the atmosphere, resulting in a smaller exhaust volume. The opening duration indicates the duration the exhaust device is continuously open during the high-frequency exhalation phase of the medical ventilation equipment. A longer opening duration means more gas is expelled. If the exhaust device is opened multiple times during the high-frequency exhalation phase, the opening duration represents the duration of a single opening or the sum of the durations of multiple openings. The durations of different openings can be the same or different. The opening frequency indicates the number of times the exhaust device is opened during the high-frequency exhalation phase of the medical ventilation equipment. Similarly, a higher opening frequency means the exhaust device is opened more often, resulting in more gas being expelled through the exhaust device during the high-frequency exhalation phase. The exhaust device can be adjusted by at least one of the opening angle, opening frequency, and opening duration.

[0099] The drive signal sent by the controller 40 can be in the form of a control waveform, enabling the drive device to control the switching element through at least one waveform. The controller 40 generates the control waveform in a manner that is, but not limited to, generating a control waveform for controlling the exhaust device based on preset ventilation control parameters and patient-end pressure. This control waveform is correlated with the patient-end pressure. Specifically, the control waveform can control at least one of the following: the opening angle, opening frequency, and opening duration of the switching element, all correlated with the patient-end pressure. This ensures that the switching element can promptly exhaust gas and maintain the average pressure in the patient's tubing close to the target average pressure. The control waveform can be, but is not limited to, any one of the following: sine wave, cosine wave, square wave, triangular wave, exponential function waveform, and Nth-order function waveform, where N is greater than or equal to 2.

[0100] In this embodiment, the switching element can be any type of valve that can block the branch where the switching element is located. For example, the switching element can include any one of a proportional exhaust valve, a switching valve, and a solenoid valve. For different switching elements, the control waveform generated by the controller 40 may be different. This is because although the switching valve and the solenoid valve have two modes, opening and closing, the opening angle of the switching valve and the solenoid valve is fixed. Therefore, the control waveform applicable to the switching valve and the solenoid valve can be a waveform that controls its opening and closing but cannot change its opening and closing angle. As for the proportional exhaust valve, the opening and closing angle of the proportional exhaust valve is controllable. Therefore, the control waveform corresponding to the proportional exhaust valve is any one of the above-mentioned sine wave, cosine wave, square wave, triangle wave, exponential function waveform, and Nth power function waveform, where N is greater than or equal to 2.

[0101] The opening and closing angle can be controlled by current, voltage, and duty cycle. The corresponding driving quantity of the exhaust device is the current, voltage, and duty cycle of the driving signal of the exhaust device. The opening and closing frequency is the number of times the opening is open when the opening is in the open state, and the opening duration is the time the opening is in the open state. In both cases, the driving quantity of the exhaust device, in addition to the current, voltage, and duty cycle of the driving signal of the exhaust device, also includes parameters that can control the opening frequency or opening duration, such as a time parameter, which controls the opening frequency or opening duration.

[0102] For the aforementioned medical ventilation equipment, one optional structure of the electric gas extraction device is as follows: the electric gas extraction device includes a motor and a rotating component; the controller 40 can send a drive signal to the motor to control the drive amount of the rotating component according to the drive amount of the exhaust device; the motor controls the drive amount of the rotating component according to the drive signal, such as sending a drive signal to the motor to control the rotation speed of the rotating component, and the motor controls the rotation speed of the rotating component according to the drive signal, such as controlling the current or voltage of the rotating component according to the drive signal, so as to control the rotation speed of the rotating component by controlling the current or voltage of the rotating component.

[0103] Corresponding to the above-described device embodiments, this disclosure also provides a control method for a medical ventilation device, wherein the medical ventilation device includes a gas source interface, an inspiratory branch, a high-frequency oscillation generator, a controller, an exhaust device, and an electric gas extraction device. The exhaust device and the electric gas extraction device may be disposed on the inspiratory branch; or, the medical ventilation device may further include an expiratory branch connected to the patient's tubing to exhaust the patient's exhaled gas; the exhaust device and the electric gas extraction device are disposed on the expiratory branch, and the corresponding descriptions are provided in the above embodiments.

[0104] In this embodiment, the control method for the medical ventilation device is applied in the controller, and its corresponding flowchart is as follows: Figure 9 As shown, the following steps may be included:

[0105] 901: When the medical ventilation equipment is in the high-frequency inhalation stage, the high-frequency oscillation generating device is controlled to generate high-frequency oscillation of the gas in the inhalation branch according to the preset high-frequency oscillation frequency, and the gas is output through the inhalation branch and the patient tubing under the action of the high-frequency oscillation generated by the high-frequency oscillation generating device.

[0106] 902: When the medical ventilation equipment is in the high-frequency exhalation phase, the working state of the exhaust device and the working state of the electric gas extraction device are adjusted according to the set ventilation control parameters and the detected patient end pressure, so as to exhaust the gas exhaled by the patient through the patient tubing at a preset high-frequency oscillation frequency.

[0107] In adjusting the operating states of the exhaust device and the electric gas extraction device, the operating state of one device is adjusted with reference to the operating state of the other. For example, based on the set ventilation control parameters and the detected patient-side pressure, the operating state of the exhaust device is adjusted. While maintaining the exhaust device in one operating state, the operating state of the electric gas extraction device is adjusted with reference to the operating state of the exhaust device, so that the ventilation control parameters of the medical ventilation equipment are consistent with the set ventilation control parameters under the action of the exhaust device and the electric gas extraction device. For an explanation of the operating state and target state, please refer to the above embodiment.

[0108] The adjustment process for regulating the operation of the exhaust device and the electric gas extraction device during the high-frequency expiratory phase, based on the set ventilation control parameters and patient-side pressure, is as follows:

[0109] The target value is determined based on the preset ventilation control parameters, and the actual value is determined based on the patient end pressure. The target value and the actual value are compared to obtain the correspondence between the target value and the actual value. Based on the correspondence between the target value and the actual value, the working status of the exhaust device and the electric gas extraction device is adjusted.

[0110] The preset ventilation control parameters are the pre-set operating parameters in the medical ventilation equipment, such as the preset low pressure and preset high pressure mentioned above. Patient-end pressure is the pressure data during patient use of the medical ventilation equipment. Patient-end pressure can be obtained from a pressure detector installed at the patient end and expressed as pressure in the patient tubing or inspiratory branch. The target value is the indicator value when the medical ventilation equipment is in a target state, while the actual value is the value when the medical ventilation equipment is currently in its operating state. The correspondence between the target value and the actual value is obtained by comparing them. This correspondence can be expressed in, but is not limited to, the difference between the target value and the actual value, or the trend of the actual value relative to the target value. Furthermore, the parameters compared during the comparison process can take the following forms:

[0111] One approach is to compare the target value at a certain moment (such as the current moment) with the actual value at the same moment; another approach is to compare the trend of the target value over a period of time with the trend of the actual value over the same period of time; yet another approach is to compare the difference between the target values ​​at two moments with the difference between the actual values ​​at the same two moments, and obtain the comparison relationship by comparing the differences. In this embodiment, the two moments for obtaining the difference are not limited.

[0112] By comparing any of the three types of parameters mentioned above, the correspondence between the target value and the actual value can be obtained, and then the working state of the exhaust device and the electric gas extraction device can be adjusted according to the correspondence.

[0113] When the medical ventilation device is in the high-frequency expiratory phase, the patient is in the process of exhalation. The patient usually exhales once for every inhalation. Therefore, the medical ventilation device will repeatedly be in the high-frequency expiratory phase. Correspondingly, the adjustment of the working state of the exhaust device and the electric gas extraction device is also a repetitive process. For example, the working state of the exhaust device and the electric gas extraction device can be adjusted at a certain frequency, such as at least one high-frequency oscillation cycle.

[0114] In one adjustment cycle, the operating states of the exhaust device and the electric gas extraction device can be adjusted according to preset ventilation control parameters and the patient-end pressure detected within the adjustment cycle. For example, in one adjustment cycle, the operating states of the exhaust device and the electric gas extraction device can be adjusted according to the changes in the patient-end pressure detected within the adjustment cycle, so that the operating states of the exhaust device and the electric gas extraction device can be adjusted multiple times in one adjustment cycle; or, only one patient-end pressure is obtained in one adjustment cycle, and then the operating states of the exhaust device and the electric gas extraction device are adjusted once. The only patient-end pressure obtained in one adjustment cycle can be the patient-end pressure detected at a single moment in the adjustment cycle, such as a preset moment or the pressure when the patient-end pressure is in a stable phase within the adjustment cycle. The only patient-end pressure obtained in one adjustment cycle can also be obtained from the patient-end pressures detected at multiple moments within the adjustment cycle, which is not limited in this embodiment. Of course, the adjustment cycle can be set according to actual needs. The adjustment cycle can be set to a fixed or variable time, or to a preset or variable number of oscillation cycles or respiratory cycles, etc.

[0115] In this embodiment, one way to adjust the operating state of the exhaust device and the electric gas extraction device is as follows: The exhaust device and the electric gas extraction device are adjusted according to a preset adjustment relationship. The preset adjustment relationship can indicate the relationship between the operating parameters of the exhaust device and the electric gas extraction device. For example, the adjustment relationship can indicate the relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device, so that the driving amount of the exhaust device and the driving amount of the electric gas extraction device can be adjusted through the relationship between the driving amounts.

[0116] The relationship between the driving quantity of the exhaust device and the driving quantity of the electric gas extraction device can be a one-to-one adjustment relationship or a many-to-one adjustment relationship. Thus, the adjustment of the working state can be based on the one-to-one adjustment relationship between the driving quantity of the exhaust device and the driving quantity of the electric gas extraction device, or based on the many-to-one adjustment relationship between the driving quantity of the exhaust device and the driving quantity of the electric gas extraction device. The many-to-one adjustment relationship means that multiple driving quantities of the exhaust device correspond to one driving quantity of the electric gas extraction device.

[0117] When adjusting according to the above-described adjustment relationship, the driving amount of one of the exhaust device and the electric gas extraction device is determined based on the preset ventilation control parameters and the patient-end pressure. Then, based on the relationship between the driving amount of the exhaust device and the electric gas extraction device, the driving amount of the other device is determined to maintain the driving amounts of the exhaust device and the electric gas extraction device at the driving amounts determined by the controller. The method for determining the driving amount of one of the exhaust device and the electric gas extraction device based on the preset ventilation control parameters and the patient-end pressure can be as follows: obtain a target value based on the preset ventilation control parameters, obtain an actual value based on the patient-end pressure, and determine the driving amount of one of the exhaust device and the electric gas extraction device based on the correspondence between the target value and the actual value. For a detailed explanation, please refer to the above-described embodiment.

[0118] After determining the driving amount of the exhaust device, the driving amount of the electric gas extraction device is determined according to the above one-to-one adjustment relationship. In this embodiment, the one-to-one adjustment relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device can be a direct proportional relationship. The so-called direct proportional relationship means that when the driving amount of the exhaust device increases, the driving amount of the electric gas extraction device also increases, so that the driving amount of each electric gas extraction device can only correspond to the driving amount of one exhaust device. This method can make the driving amounts of the exhaust device and the electric gas extraction device in a continuous adjustment process, thereby making the pressure control more stable.

[0119] The many-to-one adjustment relationship divides the driving quantity of the electric gas extraction device into multiple stages. The driving quantity of one electric gas extraction device corresponds to the driving quantity of multiple exhaust devices. During the adjustment process, the driving quantity of the electric gas extraction device will automatically switch between different stages according to the driving quantity of the exhaust devices.

[0120] In a many-to-one control relationship, the driving amount of the electric gas extraction device can increase with the increase of the driving amount of the exhaust device. In a one-to-one control relationship, the driving amount of the electric gas extraction device can also increase with the increase of the driving amount of the exhaust device. Thus, when the amount of gas to be discharged is small, the exhaust device and the electric gas extraction device use a smaller driving amount, and when the amount of gas to be discharged is large, the exhaust device and the electric gas extraction device use a larger driving amount. This allows the driving amount to be automatically adjusted with the amount of gas, and also prevents the driving amount of the exhaust device and the electric gas extraction device from being maintained at a large value, thereby reducing the power consumption of the exhaust device and the electric gas extraction device.

[0121] In this embodiment, the adjustment methods based on the above-mentioned one-to-one or many-to-one adjustment relationships include, but are not limited to, the following methods:

[0122] One approach involves obtaining the driving quantity of the electric gas extraction device based on the driving quantity of the exhaust device and a preset fitting algorithm. The preset fitting algorithm is used to fit a one-to-one or many-to-one adjustment relationship between the exhaust device and the electric gas extraction device. After obtaining the driving quantity of the exhaust device based on preset ventilation control parameters and patient-side pressure, the driving quantity of the electric gas extraction device is fitted using the preset fitting algorithm. Another approach involves looking up the driving quantity of the electric gas extraction device corresponding to the driving quantity of the exhaust device in a preset driving quantity correspondence table. The preset driving quantity correspondence table records the one-to-one or many-to-one adjustment relationship between the driving quantities of the exhaust device and the electric gas extraction device. The driving quantity of the electric gas extraction device is obtained by looking up the table. The one-to-one or many-to-one adjustment relationship in the preset driving quantity correspondence table can be a correspondence established based on the historical working status of the exhaust device and the electric gas extraction device, or an offline driving quantity correspondence table obtained through debugging of medical ventilation equipment. Thus, the driving quantity of the electric gas extraction device can be obtained by offline table lookup during the adjustment process.

[0123] In this embodiment, when adjusting the exhaust device and the electric gas extraction device, a drive signal can be sent to both devices to adjust their driving quantity. For the exhaust device, the drive signal can be any one of drive current, drive voltage, and PWM signal, while the driving quantity is any parameter that can change the opening of the exhaust device, such as the duty cycle of the current, voltage, or PWM signal. The opening of the exhaust device determines the exhaust volume of the exhaust device.

[0124] For an electric gas extraction device, the driving signal can be any one of driving current, driving voltage, PWM signal, and driving speed. The driving quantity is any parameter that can change the speed of the electric gas extraction device, such as current, voltage, the duty cycle of the PWM signal, and speed. The speed of the electric gas extraction device determines the exhaust volume of the electric gas extraction device. The electric gas extraction device can be a turbine negative pressure device. By changing the speed of the turbine negative pressure device through the driving quantity, the higher the speed, the greater the negative pressure attraction, and the greater the exhaust volume.

[0125] The above embodiment illustrates adjusting the driving amount of the exhaust device and the driving amount of the electric gas extraction device according to the adjustment relationship. This embodiment can also adjust the exhaust device and the electric gas extraction device in other ways, such as the following:

[0126] The driving force of one of the devices, the exhaust device and the electric gas extraction device, is adjusted. When the driving force of the adjusted device exceeds a preset driving force, the driving force of the other device is then adjusted. For example, the driving force of the exhaust device is adjusted first. When the driving force of the exhaust device exceeds a preset driving force (such as the maximum driving force of the exhaust device), the driving force of the electric gas extraction device is adjusted. The noise and power consumption of the electric gas extraction device are greater than those of the exhaust device. If the driving force of the exhaust device is sufficient to meet the exhaust demand during the high-frequency exhalation phase, then the electric gas extraction device does not need to be activated. Even if the electric gas extraction device needs to be activated, its noise and power consumption can be reduced by using a smaller driving force. The process of the controller adjusting the driving force of the exhaust device is described in the above embodiment and will not be detailed in this embodiment.

[0127] In this embodiment, another way to adjust the working state of the exhaust device and the electric gas extraction device is: if the driving amount of the exhaust device is within the first driving amount range, the electric gas extraction device is controlled to be in the first working state; if the driving amount of the exhaust device is within the second driving amount range, the electric gas extraction device is controlled to be in the second working state.

[0128] The maximum value of the first driving quantity range is less than the minimum value of the second driving quantity range, and the power consumption of the electric gas extraction device in the first and second working states shows an increasing trend. The working state of the electric gas extraction device is controlled by the driving quantity range of the exhaust device, so that the loss of the electric gas extraction device increases with the increase of the driving quantity of the exhaust device. In this way, when the driving quantity of the exhaust device is within the first driving quantity range, the loss of the electric gas extraction device can be kept within a small range, thus reducing power consumption.

[0129] In actual control, the range of the exhaust device's drive quantity can include at least three drive ranges, and the corresponding electric gas extraction device can have at least three working states. The power consumption of these three working states will increase with the increase of the exhaust device's drive quantity, so as to achieve precise control of the exhaust device and the electric gas extraction device through multiple drive ranges and multiple working states, thereby improving control accuracy and the stability of pressure control.

[0130] One control method for the working state of the electric gas extraction device based on the range of the exhaust device's driving quantity is as follows: if the exhaust device's driving quantity is within the first driving quantity range, the controller controls the electric gas extraction device's driving quantity to be within the third driving quantity range corresponding to the first working state; if the exhaust device's driving quantity is within the second driving quantity range, the controller controls the electric gas extraction device's driving quantity to be within the fourth driving quantity range corresponding to the second working state; the electric gas extraction device's driving quantity in the first working state is less than its driving quantity in the second working state.

[0131] Depending on the range of the exhaust device's driving quantity, the driving quantity of the electric gas extraction device can be controlled using the above-described adjustment relationship or other methods, such as the control using the low-speed zone, speed regulation zone, and saturation zone methods. For details, please refer to the above embodiments.

[0132] In this embodiment, the medical ventilation equipment may further include: a data acquisition device that acquires patient-end pressure. Correspondingly, adjusting the operating states of the exhaust device and the electric gas extraction device based on the set ventilation control parameters and the detected patient-end pressure includes: determining a target value based on the set ventilation control parameters, and controlling the operating parameters of the exhaust device to adjust its operating state based on the patient-end pressure acquired by the data acquisition device and the target value; and controlling the operating parameters of the electric gas extraction device to adjust its operating state based on the operating parameters of the exhaust device.

[0133] The operating parameters of the exhaust device and the electric gas extraction device can be the aforementioned driving quantities, such as current, voltage, etc. For the process of controlling the exhaust device and the electric gas extraction device, please refer to the process of adjusting the driving quantity described above, which will not be detailed here.

[0134] Taking the driving force of the exhaust device as the current and the driving force of the electric gas extraction device as the rotational speed as an example, the flow of the control method for the medical ventilation equipment provided in this embodiment will be explained, such as... Figure 10 As shown, the following steps may be included:

[0135] 1001: Determine the target value based on the preset ventilation control parameters.

[0136] 1002: Obtain the actual value based on the patient end pressure. Based on the target value and the actual value, obtain the correspondence between the target value and the actual value of the drive quantity used to control the exhaust device. For example, if the target value and the actual value are the target average pressure and the average pressure corresponding to the medical ventilation equipment, respectively, then the correspondence is the pressure difference.

[0137] 1003: Based on the correspondence between the target value and the actual value, the target current of the exhaust device is obtained, the current of the exhaust device is adjusted to the target current, and the opening size of the exhaust device is adjusted according to the target current.

[0138] 1004: Based on the target current and the adjustment relationship between current and speed, the target speed of the electric gas extraction device is obtained, and the current speed of the electric gas extraction device is adjusted to the target speed.

[0139] 1005: Determine if the target value matches the actual value. If they match, proceed to step 1006 to stop the adjustment. If they do not match, return to step 1002 to recalculate the actual value based on the patient's pressure.

[0140] 1006: Stop adjusting.

[0141] This disclosure also provides a storage medium storing executable instructions configured to cause a processor to execute the executable instructions to implement the control method of the above-described medical ventilation device.

[0142] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, embodiments of the present invention can take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including disk storage and optical storage, etc.) containing computer-usable program code.

[0143] Embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program operations. These computer programs can be provided to operate on a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing device to produce a machine, such that operations performed by the processor of the computer or other programmable data processing device produce implementations in the flowchart. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0144] These computer program operations may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to operate in a particular manner, such that the operations stored in the computer-readable storage medium produce an article of manufacture including an operating device, the operating device being implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0145] These computer program operations can also be loaded onto a computer or other programmable data processing equipment, causing a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing the operations performed on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0146] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A medical ventilation device, comprising a gas source interface, an inhalation branch, a high frequency oscillation generating device, a controller, an exhaust device and an electric gas extraction device; the inhalation branch is connected to the gas source interface and a patient pipeline connected to a patient's respiratory system respectively; the high frequency oscillation generating device generates high frequency oscillation of the gas in the inhalation branch according to a preset high frequency oscillation frequency; the controller is connected to the inhalation branch, the high frequency oscillation generating device, the exhaust device and the electric gas extraction device, and controls the high frequency oscillation generating device to generate high frequency oscillation of the gas in the inhalation branch according to the preset high frequency oscillation frequency when the medical ventilation device is in a high frequency inhalation stage, and controls the gas to be output through the inhalation branch and the patient pipeline under the action of the high frequency oscillation generated by the high frequency oscillation generating device; and controls the working state of the exhaust device and the working state of the electric gas extraction device according to set ventilation control parameters and detected patient end pressure when the medical ventilation device is in a high frequency exhalation stage, so as to exhaust the gas exhaled by the patient through the patient pipeline according to the preset high frequency oscillation frequency; during the adjustment of the working state of the exhaust device and the working state of the electric gas extraction device, the working state of one of the exhaust device and the electric gas extraction device is adjusted with reference to the working state of the other one, so as to avoid mutual influence of the adjustment of the working state of the exhaust device and the working state of the electric gas extraction device; The working state of one of the exhaust device and the electric gas extraction device is adjusted with reference to the working state of the other device, including: the driving amount of the exhaust device and the driving amount of the electric gas extraction device are adjusted according to the relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device, so as to adjust the opening size of the exhaust device and the rotation speed of the electric gas extraction device respectively.

2. The medical ventilation device of claim 1, wherein, The exhaust device and the electric gas extraction device are arranged on the inhalation branch.

3. The medical ventilation device of claim 1, wherein, The medical ventilation device further comprises an exhalation branch connected to the patient pipeline, and the exhalation branch is used for exhausting the gas exhaled by the patient; The exhaust device and the electric gas extraction device are arranged on the exhalation branch.

4. The medical ventilation device of claim 1, wherein, The controller is used for adjusting the exhaust device and the electric gas extraction device according to a one-to-one adjustment relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device. Or The controller is used for adjusting the exhaust device and the electric gas extraction device according to a many-to-one adjustment relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device, and the many-to-one adjustment relationship means that a plurality of driving amounts of the exhaust device correspond to one driving amount of the electric gas extraction device.

5. The medical ventilation device of claim 4, wherein, The controller obtains the driving amount of the electric gas extraction device according to the driving amount of the exhaust device and a preset fitting algorithm. Or The controller finds the driving amount of the electric gas extraction device corresponding to the driving amount of the exhaust device from a preset driving amount corresponding table.

6. The medical ventilation device of claim 1, wherein, The controller is configured to adjust the driving amount of one of the exhaust device and the electric gas extraction device according to a preset adjustment relationship between the exhaust device and the electric gas extraction device, and to start adjusting the driving amount of the other device when the driving amount of the adjusted device is greater than a preset driving amount.

7. The medical ventilation device of claim 1, wherein, The controller is configured to control the electric gas extraction device to be in a first working state when the driving amount of the exhaust device is within a first driving amount range. The controller is configured to control the electric gas extraction device to be in a second working state when the driving amount of the exhaust device is within a second driving amount range. The maximum value of the first driving amount range is less than the minimum value of the second driving amount range, and the power consumption of the electric gas extraction device in the first working state and the second working state forms an increasing trend.

8. The medical ventilation device of claim 7, wherein, The controller is configured to control the driving amount of the electric gas extraction device to be within a third driving amount range corresponding to the first working state when the driving amount of the exhaust device is within the first driving amount range. The controller is configured to control the driving amount of the electric gas extraction device to be within a fourth driving amount range corresponding to the second working state when the driving amount of the exhaust device is within the second driving amount range. The driving amount of the electric gas extraction device in the first working state is less than the driving amount in the second working state.

9. The medical ventilation device according to any one of claims 1 to 8, wherein, Further comprising: The acquisition device acquires the patient end pressure; The controller determines a target value according to the set ventilation control control parameter, and controls the working parameter of the exhaust device to adjust the working state of the exhaust device according to the patient end pressure acquired by the acquisition device and the target value; The controller controls the working parameter of the electric gas extraction device to adjust the working state of the electric gas extraction device according to the working parameter of the exhaust device.

10. A control method of a medical ventilation device, the medical ventilation device comprising a gas source interface, an inhalation branch, a high-frequency oscillation generation device, a controller, an exhaust device and an electric gas extraction device, the inhalation branch being connected to the gas source interface and a patient pipeline connected to a patient's respiratory system respectively, the controller being connected to the inhalation branch, the high-frequency oscillation generation device, the exhaust device and the electric gas extraction device, the control method being applied to the controller, and the control method comprising: controlling the high-frequency oscillation generation device to generate high-frequency oscillation of gas in the inhalation branch at a preset high-frequency oscillation frequency when the medical ventilation device is in a high-frequency inhalation phase, and outputting the gas through the inhalation branch and the patient pipeline under the action of the high-frequency oscillation generated by the high-frequency oscillation generation device; adjusting the working state of the exhaust device and the working state of the electric gas extraction device according to the set ventilation control parameter and the detected patient end pressure when the medical ventilation device is in a high-frequency exhalation phase, so as to exhaust the gas exhaled by the patient through the patient pipeline at the preset high-frequency oscillation frequency. In the process of adjusting the working state of the exhaust device and the working state of the electric gas extraction device, the working state of one of the exhaust device and the electric gas extraction device is adjusted with reference to the working state of the other device, so as to avoid the working state adjustment of the exhaust device and the electric gas extraction device affecting each other. The working state of one of the exhaust device and the electric gas extraction device is adjusted with reference to the working state of the other device, including: adjusting the driving amount of the exhaust device and the driving amount of the electric gas extraction device according to the relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device, so as to adjust the opening size of the exhaust device and the rotation speed of the electric gas extraction device respectively.

11. The control method according to claim 10, wherein The exhaust device and the electric gas extraction device are arranged on the inspiratory branch. Or The medical ventilation device further comprises an expiratory branch connected with the patient pipeline, for discharging the gas exhaled by the patient. The exhaust device and the electric gas extraction device are arranged on the expiratory branch.

12. The control method according to claim 10, wherein The adjusting of the driving amount of the exhaust device and the driving amount of the electric gas extraction device according to the relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device includes: adjusting the exhaust device and the electric gas extraction device according to a one-to-one adjustment relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device; Or adjusting the exhaust device and the electric gas extraction device according to a many-to-one adjustment relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device, the many-to-one adjustment relationship indicating that a plurality of driving amounts of the exhaust device correspond to one driving amount of the electric gas extraction device.

13. The control method according to claim 12, wherein The driving amount of the electric gas extraction device is obtained according to the driving amount of the exhaust device and a preset fitting algorithm; Or The driving amount of the electric gas extraction device is the driving amount of the electric gas extraction device corresponding to the driving amount of the exhaust device, which is found from a preset driving amount corresponding table.

14. The control method according to claim 10, wherein The adjusting of the driving amount of the exhaust device and the driving amount of the electric gas extraction device according to the relationship between the driving amount of the exhaust device and the driving amount of the electric gas extraction device includes: adjusting the driving amount of one of the exhaust device and the electric gas extraction device according to a preset adjustment relationship between the exhaust device and the electric gas extraction device, and starting to adjust the driving amount of the other device when the driving amount of the adjusted device is greater than a preset driving amount.

15. The control method according to claim 10, wherein The adjusting of the working state of the exhaust device and the working state of the electric gas extraction device includes: if the driving amount of the exhaust device is within a first driving amount range, controlling the electric gas extraction device to be in a first working state; if the driving amount of the exhaust device is within a second driving amount range, controlling the electric gas extraction device to be in a second working state; the maximum value of the first driving amount range is less than the minimum value of the second driving amount range, and the power consumption of the electric gas extraction device in the first working state and the second working state forms an increasing trend.

16. The control method according to claim 15, wherein the first driving amount range, controlling the driving amount of the electric gas extraction device in a third driving amount range corresponding to the first working state; the second driving amount range, controlling the driving amount of the electric gas extraction device in a fourth driving amount range corresponding to the second working state; the driving amount of the electric gas extraction device in the first working state is less than the driving amount in the second working state.

17. The control method according to any one of claims 10 to 16, wherein the patient end pressure is collected by a collection device in the medical ventilation device; the working state of the exhaust device and the working state of the electric gas extraction device according to the set ventilation control parameter and the detected patient end pressure comprises: determining a target value according to the set ventilation control parameter, and controlling the working parameter of the exhaust device according to the patient end pressure collected by the collection device and the target value to adjust the working state of the exhaust device; and controlling the working parameter of the electric gas extraction device according to the working parameter of the exhaust device to adjust the working state of the electric gas extraction device.

18. A storage medium, the storage medium storing executable instructions configured to cause a processor to execute the executable instructions to implement the control method of the medical ventilation device according to any one of claims 10 to 17.

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