Air bag pressure control device, medical ventilation equipment and control method of medical ventilation equipment

Abstract

The embodiment of the invention discloses an air bag pressure control device, medical ventilation equipment and a control method of the medical ventilation equipment. In the process that a user uses the medical ventilation equipment to be connected with a trachea cannula to convey breathing gas to the trachea of a patient, an air bag of the trachea cannula is inflated or deflated through a pressure adjusting module of the air bag pressure control device; the pressure of the air bag is further adjusted, the pressure of the air bag is measured through the pressure monitoring module, the pressure adjusting module is controlled through the control module to adjust the air bag at different pressures, the air leakage amount determined by the medical ventilation equipment under different air bag pressures is obtained at the same time, and then analysis is conducted according to the change condition of at least two air leakage amounts. After the target pressure is determined, the pressure adjusting module can be controlled to adjust the pressure of the air bag according to the target pressure, so that the pressure of the air bag can be automatically adjusted to adapt to physiological differences of different patients, and more accurate, real-time and personalized air bag pressure management is realized.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an airbag pressure control device, a medical ventilation device, and a control method thereof. Background Technology

[0002] In the medical field, especially during intensive care and surgery, medical ventilation equipment is a vital tool for maintaining patient life. The use of such equipment typically involves endotracheal intubation, also known as endotracheal tube insertion. This procedure involves inserting an endotracheal tube through the upper respiratory tract (mouth, nose, or tracheostomy opening) into the trachea to ensure airway patency, ventilation, oxygen supply, airway suction, and intratracheal drug administration. A standard endotracheal intubation system includes a tube, an inflatable cuff, and an inflation tubing. The inflated cuff provides a seal against the tracheal wall, securing the trachea, preventing air leakage, and preventing oral secretions from entering the trachea and causing aspiration pneumonia. Therefore, the cuff's seal is crucial for effective ventilation. However, due to individual patient differences, the optimal cuff pressure varies from person to person; both excessively high and insufficient cuff pressure can cause harm to the patient. On the one hand, excessive cuff pressure can compress the contact area, causing insufficient local blood supply, leading to damage to the tracheal cartilage rings and mucosal ulcers. On the other hand, if the cuff pressure is too low, it cannot fit tightly against the tracheal wall, causing gas leakage. This can result in secretions from the cuff being aspirated into the lungs, increasing the patient's risk of ventilator-associated pneumonia (VAP). However, current cuff pressure control relies primarily on manual adjustment, lacking precision and real-time capability. This can easily lead to excessively high pressure causing tracheal damage or excessively low pressure causing gas leakage, thus affecting treatment outcomes.

[0003] Although there are currently automated cuff management modules that can automatically monitor and maintain a cuff pressure level set by a doctor, thus achieving automatic inflation and deflation of the cuff and automatic pressure maintenance, the required cuff pressure varies from person to person due to differences in airway physiology. Therefore, these automated modules still cannot adapt to individual patient differences to set appropriate cuff pressures. Summary of the Invention

[0004] The following is an overview of the subject matter described in detail in this application. This overview is not intended to limit the scope of the claims.

[0005] This application provides an airbag pressure control device, a medical ventilation device, and a control method thereof, which can automatically adjust the airbag pressure to adapt to the physiological differences of different patients, and achieve more accurate, real-time, and personalized airbag pressure management.

[0006] In a first aspect, embodiments of this application provide an airbag pressure control device, comprising:

[0007] A pressure regulation module is used to inflate or deflate the cuff of the endotracheal tube to regulate the pressure of the cuff, wherein the endotracheal tube is connected to a medical ventilation device to deliver breathing gases to the patient's trachea.

[0008] A pressure monitoring module is used to measure the pressure of the airbag;

[0009] A control module is used to control the pressure regulation module to adjust the airbag sequentially with different first pressures;

[0010] The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage.

[0011] The target pressure of the airbag is determined based on the changes in the at least two leakage rates, and the pressure regulating module is used to adjust the pressure of the airbag according to the target pressure.

[0012] Secondly, embodiments of this application provide an airbag leakage detection device, comprising:

[0013] A pressure regulation module is used to inflate or deflate the cuff of the endotracheal tube to regulate the pressure of the cuff, wherein the endotracheal tube is connected to a medical ventilation device to deliver breathing gases to the patient's trachea.

[0014] A pressure monitoring module is used to measure the pressure of the airbag;

[0015] A control module is used to control the pressure regulation module to adjust the airbag sequentially with different first pressures;

[0016] The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage.

[0017] Determine whether the airbag is leaking based on the changes in the at least two leakage rates.

[0018] Thirdly, embodiments of this application provide a medical ventilation device, comprising:

[0019] A breathing tubing, which is used to connect to an endotracheal tube and to provide a passage for the patient to inhale and exhale gases;

[0020] A breathing module for providing mechanical ventilation to a patient, the breathing module being connected to the breathing tubing;

[0021] The respiratory monitoring module is used to monitor the patient's respiratory parameters;

[0022] A pressure regulation module is used to inflate or deflate the cuff of the endotracheal tube to regulate the pressure of the cuff, wherein the endotracheal tube is connected to a medical ventilation device to deliver breathing gases to the patient's trachea.

[0023] A pressure monitoring module is used to measure the pressure of the airbag;

[0024] A control module is used to control the pressure regulation module to adjust the airbag sequentially with different first pressures;

[0025] The respiratory parameters are obtained under different first pressures, and the leakage of the medical ventilation device under the first pressure is determined based on the respiratory parameters, wherein one first pressure corresponds to one leakage.

[0026] The target pressure of the airbag is determined based on the changes in the at least two leakage rates, and the pressure regulating module is used to adjust the pressure of the airbag according to the target pressure.

[0027] Fourthly, embodiments of this application provide a medical ventilation device, comprising:

[0028] A breathing tubing, which is used to connect to an endotracheal tube and to provide a passage for the patient to inhale and exhale gases;

[0029] A breathing module for providing mechanical ventilation to a patient, the breathing module being connected to the breathing tubing;

[0030] The respiratory monitoring module is used to monitor the patient's respiratory parameters;

[0031] A control module is connected to an airbag pressure control device, which is used to control the pressure of the airbag placed in the patient's airway.

[0032] The control module is used to control the airbag pressure control device to adjust the airbag sequentially with different first pressures;

[0033] The respiratory parameters are obtained under different first pressures, and the leakage of the medical ventilation device under the first pressure is determined based on the respiratory parameters, wherein one first pressure corresponds to one leakage.

[0034] Determine whether the airbag is leaking based on the changes in the at least two leakage rates.

[0035] Fifthly, embodiments of this application provide a ventilator system, including:

[0036] A medical ventilation device includes a breathing tubing and a breathing module for providing mechanical ventilation to a patient, the breathing tubing providing a passage for the patient to inhale and exhale gases, and the breathing module being connected to the breathing tubing.

[0037] A cuff pressure control device is used to control the pressure of the cuff placed in the patient's airway;

[0038] The control module is communicatively connected to the medical ventilation device and the airbag pressure control device. The control module is used to control the airbag pressure control device to adjust the airbag sequentially with different first pressures.

[0039] The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage.

[0040] The target pressure of the airbag is determined based on the changes in the at least two leakage rates, and the airbag pressure control device is used to adjust the pressure of the airbag according to the target pressure.

[0041] On the other hand, embodiments of this application provide a ventilator system, including:

[0042] A medical ventilation device includes a breathing tubing and a breathing module for providing mechanical ventilation to a patient, the breathing tubing providing a passage for the patient to inhale and exhale gases, and the breathing module being connected to the breathing tubing.

[0043] A cuff pressure control device is used to control the pressure of the cuff placed in the patient's airway;

[0044] The control module is communicatively connected to the medical ventilation device and the airbag pressure control device. The control module is used to control the airbag pressure control device to adjust the airbag sequentially with different first pressures.

[0045] The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage.

[0046] Determine whether the airbag is leaking based on the changes in the at least two leakage rates.

[0047] Sixthly, embodiments of this application provide an airbag pressure control method, comprising:

[0048] The control pressure regulation module sequentially adjusts the airbag with different initial pressures;

[0049] The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage.

[0050] The target pressure of the airbag is determined based on the changes in the at least two leakage rates, and the pressure of the airbag is adjusted by the pressure regulating module according to the target pressure.

[0051] Seventhly, embodiments of this application provide a method for determining airbag leakage, including:

[0052] The control pressure regulation module sequentially adjusts the airbag with different first pressures;

[0053] The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage.

[0054] Determine whether the airbag is leaking based on the changes in the at least two leakage rates.

[0055] Eighthly, embodiments of this application provide a control device, including a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, it executes the airbag pressure control method of the sixth aspect of this application or the airbag leakage judgment method of the seventh aspect of this application.

[0056] On the other hand, embodiments of this application provide a computer storage medium storing a computer program, which, when executed by a processor, implements the airbag pressure control method of the sixth aspect of this application or the airbag leakage judgment method of the seventh aspect of this application.

[0057] On the other hand, embodiments of this application provide a computer program product, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the airbag pressure control method of the sixth aspect of this application or the airbag leakage judgment method of the seventh aspect of this application.

[0058] The embodiments of this application include at least the following beneficial effects:

[0059] On one hand, in this embodiment of the application, during the process of using a medical ventilation device connected to an endotracheal tube to deliver breathing gas to the patient's trachea, the user inflates or deflates the cuff of the endotracheal tube through the pressure regulation module of the cuff pressure control device, thereby adjusting the pressure of the cuff. The pressure of the cuff is measured by the pressure monitoring module, and the pressure regulation module is controlled by the control module to adjust the cuff at different pressures. At the same time, the leakage volume determined by the medical ventilation device under different cuff pressures is obtained. Then, based on the changes in at least two leakage volumes, the target pressure is determined. The pressure regulation module can be controlled to adjust the pressure of the cuff according to the target pressure, thereby automatically adjusting the cuff pressure to adapt to the physiological differences of different patients and achieving more accurate, real-time and personalized cuff pressure management.

[0060] On the other hand, in this embodiment of the application, during the process of connecting the endotracheal tube to the medical ventilation device to deliver breathing gas to the patient's trachea, the pressure regulation module of the cuff leakage detection device inflates or deflates the cuff of the endotracheal tube to regulate the pressure of the cuff. The pressure monitoring module measures the pressure of the cuff, and the control module controls the pressure regulation module to adjust the cuff at different pressures. At the same time, the leakage amount determined by the medical ventilation device under different cuff pressures is obtained. Then, based on the changes in at least two leakage amounts, it is determined whether the cuff has leaked. This helps medical staff to detect abnormal cuff pressure in a timely manner, so as to avoid discomfort or complications to the patient due to excessively high or low cuff pressure, and improve the patient's overall treatment experience.

[0061] On the other hand, in this embodiment, during the process of using a medical ventilation device connected to an endotracheal tube to deliver breathing gases to the patient's trachea, the breathing tubing of the medical ventilation device is connected to the endotracheal tube, thus providing a channel for the patient to inhale and exhale gases. This breathing tubing is also connected to a breathing module, which provides mechanical ventilation to the patient, assisting the patient in breathing. The breathing monitoring module can monitor the patient's respiratory parameters in real time. The medical ventilation device inflates or deflates the cuff of the endotracheal tube through a pressure regulation module with a built-in cuff pressure control device, thereby adjusting the cuff pressure. The pressure monitoring module measures the cuff pressure, and the control module controls the pressure regulation module to adjust the cuff at different pressures. Simultaneously, it acquires the respiratory parameters determined by the medical ventilation device under different cuff pressures and determines the leakage amount corresponding to different cuff pressures based on the respiratory parameters. Then, based on the analysis of changes in at least two leakage amounts, a target pressure is determined. The pressure regulation module can then be controlled to adjust the cuff pressure according to this target pressure, thereby automatically adjusting the cuff pressure to adapt to the physiological differences of different patients, achieving more precise, real-time, and personalized cuff pressure management.

[0062] On the other hand, in this embodiment, during the process of using a medical ventilation device connected to an endotracheal tube to deliver breathing gases to the patient's trachea, the breathing tubing of the medical ventilation device is connected to the endotracheal tube, thereby providing a channel for the patient to inhale and exhale gases. This breathing tubing is also connected to a breathing module, which provides mechanical ventilation to the patient, assisting the patient in breathing. The breathing monitoring module can monitor the patient's respiratory parameters in real time. The medical ventilation device, through a control module, controls an external cuff pressure control device to adjust the cuff at different pressures. Simultaneously, it acquires respiratory parameters at different cuff pressures and determines the leakage amount corresponding to different cuff pressures based on the respiratory parameters. Then, based on the analysis of changes in at least two leakage amounts, a target pressure is determined. The cuff control device can then be controlled to adjust the cuff pressure according to this target pressure, thereby automatically adjusting the cuff pressure to adapt to the physiological differences of different patients, achieving more precise, real-time, and personalized cuff pressure management.

[0063] On the other hand, in this embodiment, when using the ventilator system, the user can connect the breathing tubing of the medical ventilation device to the endotracheal tube, thereby providing a channel for the patient to inhale and exhale gases. This breathing tubing is also connected to a breathing module, which provides mechanical ventilation to the patient, delivering breathing gases into the patient's trachea to assist breathing. The ventilator system controls the pressure of the cuff placed in the patient's airway through a cuff pressure control device. Specifically, a separate control module establishes a communication connection between the medical ventilation device and the cuff control device. The control module controls the cuff control device to adjust the cuff at different pressures. Simultaneously, the control module acquires the leakage volume determined by the medical ventilation device under different cuff pressures. Based on the analysis of changes in at least two leakage volumes, a target pressure is determined. The pressure adjustment module then adjusts the cuff pressure according to this target pressure, automatically adjusting the cuff pressure to adapt to the physiological differences of different patients, achieving more precise, real-time, and personalized cuff pressure management.

[0064] On the other hand, one embodiment of this application provides a ventilator system that provides a channel for inhalation and exhalation of gases to a patient through a breathing tubing of a medical ventilation device. This breathing tubing is connected to a breathing module, enabling the breathing module to provide mechanical ventilation to the patient. The ventilator system uses a pressure regulating module to inflate or deflate the cuff of the endotracheal tube to regulate the cuff pressure. The endotracheal tube is connected to the medical ventilation device to deliver breathing gases to the patient's trachea. The ventilator system measures the cuff pressure through a pressure monitoring module. The cuff pressure control method of the sixth aspect of this application is executed through the control device of the eighth aspect of this application, enabling automatic adjustment of the cuff pressure to adapt to the physiological differences of different patients, achieving more precise, real-time, and personalized cuff pressure management. Alternatively, the cuff leakage detection method of the seventh aspect of this application can also be executed through the control device of the eighth aspect of this application, helping medical staff to promptly detect abnormal cuff pressure, thus avoiding discomfort or complications caused by excessively high or low cuff pressure and improving the patient's overall treatment experience. Attached Figure Description

[0065] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0066] Figure 1 This is a schematic diagram of the structure of a medical ventilation device provided in one embodiment of this application;

[0067] Figure 2 A graph showing the relationship between a first pressure and the amount of leakage is provided for one embodiment of this application;

[0068] Figure 3 A graph showing the relationship between a first pressure and leakage rate is provided for one embodiment of this application;

[0069] Figure 4 This is a schematic diagram of the structure of a ventilator system provided in one embodiment of this application;

[0070] Figure 5 This is a schematic diagram of the structure of a ventilator system provided in one embodiment of this application;

[0071] Figure 6 This is a schematic diagram of the structure of a medical ventilation device provided in one embodiment of this application;

[0072] Figure 7 This is a schematic diagram of the structure of a ventilator system provided in one embodiment of this application;

[0073] Figure 8 A schematic flowchart of an airbag pressure control method provided in one embodiment of this application;

[0074] Figure 9 A flowchart illustrating an airbag leakage detection method provided in one embodiment of this application;

[0075] Figure 10 This is a schematic diagram of the structure of a control device provided in one embodiment of this application. Detailed Implementation

[0076] The present application will be further described below with reference to the accompanying drawings and specific embodiments. The described embodiments should not be considered as limitations on the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0077] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0079] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate to describe embodiments of this application, for example, those that can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatuses.

[0080] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0081] It should be understood that in the description of the embodiments of this application, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0082] In the medical field, especially during intensive care and surgery, medical ventilation equipment is a vital tool for maintaining patient life. The use of such equipment typically involves endotracheal intubation, also known as endotracheal tube insertion. This procedure involves inserting an endotracheal tube through the upper respiratory tract (mouth, nose, or tracheostomy opening) into the trachea to ensure airway patency, ventilation, oxygen supply, airway suction, and intratracheal drug administration. A standard endotracheal intubation system includes a tube, an inflatable cuff, and an inflation tubing. The inflated cuff provides a seal against the tracheal wall, securing the trachea, preventing air leakage, and preventing oral secretions from entering the trachea and causing aspiration pneumonia. Therefore, the cuff's seal is crucial for effective ventilation. However, due to individual patient differences, the optimal cuff pressure varies from person to person; both excessively high and insufficient cuff pressure can cause harm to the patient. On the one hand, excessive cuff pressure can compress the contact area, causing insufficient local blood supply, leading to damage to the tracheal cartilage rings and mucosal ulcers. On the other hand, if the cuff pressure is too low, it cannot fit tightly against the tracheal wall, causing gas leakage. This can result in secretions from the cuff being aspirated into the lungs, increasing the patient's risk of ventilator-associated pneumonia (VAP). However, current cuff pressure control relies primarily on manual adjustment, lacking precision and real-time capability. This can easily lead to excessively high pressure causing tracheal damage or excessively low pressure causing gas leakage, thus affecting treatment outcomes.

[0083] Although there are currently automated cuff management modules that can automatically monitor and maintain a cuff pressure level set by a doctor, thus achieving automatic inflation and deflation of the cuff and automatic pressure maintenance, the required cuff pressure varies from person to person due to differences in airway physiology. Therefore, these automated modules still cannot adapt to individual patient differences to set appropriate cuff pressures.

[0084] Therefore, embodiments of this application provide an airbag pressure control device, a medical ventilation device and a control method thereof, which can automatically adjust the airbag pressure to adapt to the physiological differences of different patients, and achieve more accurate, real-time and personalized airbag pressure management.

[0085] See Figure 1 As shown, this application embodiment provides an airbag pressure control device 12, which may include a pressure regulating module 121, a pressure monitoring module 123, and a control module 122. It should be understood that the airbag pressure control device 12 can be installed inside a medical ventilation device 11, may share some components with the medical ventilation device 11, or may be manufactured as a separate product. Figure 1 As shown, the medical ventilation device 11 provided in this embodiment includes a breathing tubing 24, a breathing module 112, a breathing monitoring module 111, and related modules of the aforementioned cuff pressure control device 12. In normal operation, the endotracheal tube 20 is inserted into the patient's airway 21. The cuff 22 of the endotracheal tube is fixed outside one end of the tube 20 extending into the airway 21. One end of the inflation tube 23 communicates with the inside of the cuff 22, and the other end is located outside the airway 21 and communicates with the pressure regulating module 121. The exposed end 201 of the tube 20 is connected to the breathing tubing 24 of the medical ventilation device 11. The breathing tubing 24 communicates with the endotracheal tube and provides a channel for the patient to inhale and exhale gases, delivering breathing gases to the patient's trachea. In some embodiments, the breathing tubing 24 includes an inspiratory circuit 24a and an expiratory circuit 24b. In this case, the inspiratory circuit 24a and the expiratory circuit 24b are respectively connected to the exposed end 201 of the endotracheal tube 20 via a Y-shaped member 25. It should be noted that the medical ventilation device in this embodiment of the invention can be a ventilator or anesthesia machine.

[0086] In one embodiment, the breathing module 112 is connected to the breathing tubing 24 to provide mechanical ventilation to the patient. Specifically, the breathing module 112 includes an inspiratory valve and an expiratory valve. The inspiratory and expiratory valves control the airflow through the breathing tubing 24 by switching on and off and adjusting their opening degree, thereby delivering a specific airflow to the patient's lungs through the breathing tubing 24 and the catheter 20, and maintaining airway pressure and tidal volume above a specific level to achieve mechanical ventilation for the patient.

[0087] In one embodiment, the respiratory monitoring module 111 is used to monitor the patient's respiratory parameters. It is understood that the respiratory monitoring module 111 can monitor respiratory parameters such as tidal volume, respiratory flow rate, airway pressure, carbon dioxide content, and chemical indicator content. Specifically, the respiratory monitoring module 111 may include a flow sensor to monitor the patient's respiratory flow rate and output the respiratory flow rate to the control module 122. In some embodiments, the respiratory monitoring module 111 can be connected to the breathing tubing 24. For example, when the exposed end 201 of the catheter 20 is connected to the breathing tubing 24 of the medical ventilation device 11 via a Y-shaped member 25, the respiratory monitoring module 111 can be disposed within the tubing of the Y-shaped member 25. When the respiratory monitoring module 111 needs to monitor respiratory parameters during the expiratory and inspiratory phases separately, the respiratory monitoring module 111 can be connected to the inspiratory circuit 24a and the expiratory circuit 24b of the breathing tubing 24, respectively.

[0088] In one embodiment, the pressure regulating module 121 inflates or deflates the airbag 22 of the endotracheal tube via the inflation tube 23 to regulate the pressure of the airbag 22. Specifically, the pressure regulating module 121 includes an air pump 1211 and a first interface 1212, which is connected to the gas input / output port of the air pump 1211 via a connecting tube 1213. Further, the exposed end 201 of the inflation tube 23 includes a second interface 231, which can cooperate with the first interface 1212 to achieve an airtight connection. When the second interface 231 is connected to the first interface 1212, a gas passage is formed from the air pump 1211, through the connecting tube 1213, the first interface 1212, the second interface 231, the inflation tube 23 to the airbag 22. In some embodiments, the air pump 1211 can be replaced with a syringe, a proportional valve, or a suction valve, thereby electrically connecting the power component of the syringe, proportional valve, or suction valve to the control module 122, and the gas input and output ports are connected to the first interface 1212 through the connecting pipe 1213.

[0089] In one embodiment, the control module 122 is connected to the pressure monitoring module 123, or the pressure monitoring module 123 can also be disposed on the pressure regulating module 121. It is used to measure the pressure of the airbag 22 when the pressure regulating module 121 and the inflation tube 23 are connected. For example, the pressure monitoring module 123 can be installed through a mounting hole at the gas input / output port of the air pump 1211, or it can be installed on the connecting pipe 1213, or it can be installed on the first interface 1212, so that the pressure monitoring module 123 can communicate with the gas passage of the airbag 22. Furthermore, the signal output terminal of the pressure monitoring module 123 is electrically connected to the control module 122, thereby enabling the pressure of the airbag 22 to be fed back to the control module 122. It is understood that the pressure monitoring module 123 is used to measure the pressure of the airbag 22, and its placement on the pressure regulating module 121 is only one example. The pressure monitoring module 123 can also have other installation methods, as long as it can communicate with the airbag 22 during use.

[0090] In one embodiment, the control module 122 is connected to the pressure adjustment module 121 and is used to control the pressure adjustment module 121 to adjust the airbag 22 sequentially with different first pressures. During the process of the control module 122 controlling the pressure adjustment module 121 to adjust the airbag pressure, the first pressure can be a preset pressure value or different specific pressure values ​​selected by the user. Adjusting with different first pressures sequentially can either gradually increase the pressure of the airbag 22 by using multiple first pressures with increasing intensity, or gradually decrease the pressure of the airbag 22 by using multiple first pressures with decreasing intensity.

[0091] Furthermore, when the control module 122 controls the pressure regulation module 121 to adjust the cuff pressure, it can obtain the leakage volume determined by the medical ventilation device 11 under different first pressures, where each first pressure corresponds to one leakage volume. It should be understood that during the process of using the medical ventilation device 11 to assist patients who cannot breathe independently or require respiratory support, the leakage volume can be detected in real time. This leakage volume can represent the total amount of air leaked from the airway 21 component and cuff 22 of the medical ventilation device 11 under different first pressures. By detecting the leakage volume, the leakage situation of the cuff 22 under different pressure conditions can be reflected. The airway 21 component may include an inflation tube 23, a breathing tube 24, etc. Further, after obtaining the leakage volumes determined under different first pressures from the medical ventilation device 11, the control module 122 can determine the target pressure of the cuff 22 based on at least two leakage volumes and / or the changes in at least two leakage volumes, and control the pressure regulation module 121 to adjust the pressure of the cuff 22 according to the target pressure. It is understandable that in order to achieve the best ventilation effect and ensure patient comfort, the pressure value that the air bag 22 needs to maintain is determined. Therefore, based on the changes in the leakage of the air bag 22 under different pressures, the target pressure that the air bag 22 should achieve can be determined.

[0092] The cuff pressure control device 12 provided in this application embodiment allows users to inflate or deflate the cuff 22 of the endotracheal tube via the pressure adjustment module 121 during the process of using a medical ventilation device 11 connected to an endotracheal tube to deliver breathing gas to the patient's trachea. This adjusts the pressure of the cuff 22 by the pressure adjustment module 121. The pressure of the cuff 22 is measured by the pressure monitoring module 123, and the control module 122 controls the pressure adjustment module 121 to adjust the cuff 22 at different pressures. Simultaneously, the leakage volume determined by the medical ventilation device 11 under different cuff pressures is acquired. Based on the analysis of at least two leakage volumes and / or the changes in at least two leakage volumes, a target pressure is determined. The pressure adjustment module 121 can then be controlled to adjust the pressure of the cuff 22 according to this target pressure. This allows for automatic adjustment of the cuff pressure to adapt to the physiological differences of different patients, achieving more precise, real-time, and personalized cuff pressure management.

[0093] In some embodiments, the airbag pressure control device 12 can be connected to an input device of an externally connected medical ventilation device 11. Figure 1(Not shown) A communication connection can be established, which may be wired or wireless. When using a wired connection, the airbag pressure control device 12 and the input device of the external medical ventilation device 11 can exchange data via a data cable. When using a wireless connection, the airbag pressure control device 12 and the input device of the external medical ventilation device 11 can exchange data via Wi-Fi, Bluetooth, Near Field Communication (NFC), ZigBee, Ultra-Wideband (UWB), or 2G, 3G, 4G, 5G, etc. The input device is used to receive parameters and instructions input by the user, such as the user-inputted first pressure, and sends it to the control module 122. The input device may include a keyboard, mouse, touchscreen, or other control buttons. In some embodiments, the medical ventilation device 11 further includes a display module disposed inside or electrically connected to the medical ventilation device 11. The display module may be a touch screen, configured with a human-machine interface for receiving and displaying parameters and instructions input by the user. The user can directly perform touch operations on the human-machine interface to input the first pressure to the control module 122, which facilitates the user to adjust the airbag pressure in a timely manner and improves the user experience.

[0094] In some embodiments, the control module 122 can control the pressure regulating module 121 to inflate or deflate the airbag 22 based on user input instructions. In addition, the control module 122 can also display the amount of air leakage corresponding to the measured pressure of the airbag 22 through the display module.

[0095] In some embodiments, the connection between the control module 122 and the pressure regulating module 121 can be electrical, mechanical, or pneumatic. For example, the pressure regulating module 121 can be an air pump 1211, and the control module 122 can be electrically connected to the air pump 1211 to control the start and direction of the air pump 1211, thereby inflating or deflating the airbag 22.

[0096] In one embodiment, the control module 122 is used to determine whether the airbag 22 has leaked based on at least two leakage amounts and / or changes in at least two leakage amounts. It is understood that before the control module 122 controls the pressure adjustment module 121 to adjust the pressure of the airbag 22 according to the target pressure, it can also compare and analyze the acquired at least two leakage amounts, checking for significant changes between the two leakage amounts to determine whether the airbag 22 has leaked. Alternatively, it can determine whether the airbag 22 has leaked by comparing the at least two leakage amounts with a first preset leakage threshold or a preset leakage range. This helps medical staff to promptly detect abnormal airbag pressure, avoiding discomfort or complications for patients due to excessively high or low airbag pressure, and improving the overall treatment experience for patients.

[0097] In one embodiment, the control module 122 compares the leakage amount corresponding to the current first pressure with the leakage amounts corresponding to the previous N first pressures to obtain the leakage change amount of the current first pressure. If the leakage change amount is greater than a first preset change amount threshold or exceeds a first preset change amount range, it is determined that the airbag 22 has leaked. If the leakage change amount is less than the first preset change amount threshold or falls within the first preset change amount range, it is determined that the airbag 22 has not leaked. Here, the current first pressure is greater than the previous N first pressures, N is an integer greater than or equal to 1, and the leakage change amount is positively correlated with the degree of leakage of the airbag 22.

[0098] Understandably, the first N first pressures can be multiple first pressures adjusted before the current first pressure is obtained during the airbag pressure adjustment process, where N is an integer greater than or equal to 1. The specific value can be set by the user in advance. For example, when N is set to 3, the control module 122 obtains the three first pressures before the current first pressure as t1, t2, and t3, respectively. Specifically, these can be the first pressures corresponding to multiple time points within a certain period, and then obtains three consecutive leak values ​​L1, L2, and L3 corresponding to each first pressure. After obtaining the leak values ​​corresponding to the first N first pressures, a suitable leak value can be selected and compared with the leak value corresponding to the current first pressure. Alternatively, the multiple leak values ​​corresponding to the first N first pressures can be statistically calculated to obtain the average leak value, which is then compared with the leak value corresponding to the current first pressure to obtain the leak change L of the current first pressure. By monitoring the leak change during the process of increasing or decreasing the airbag pressure, it is possible to accurately determine whether the leak change during the airbag pressure adjustment process is related to the airbag 22 leakage.

[0099] Specifically, see Figure 2 As shown, Figure 2This is a graph showing the relationship between the first pressure and the corresponding change in leakage during the increase of airbag pressure. The change in leakage is positively correlated with the degree of leakage in airbag 22. The user can pre-set a first preset change threshold or a first preset change range via control module 122. For example, if the first preset change threshold is set to 5 ml / min, at the first pressure t1 = 20 Pa, the change in leakage L = 11 ml / min. Since this change in leakage is greater than the first preset change threshold of 5 ml / min, it is determined that airbag 22 is leaking. If the pressure is subsequently increased until the first pressure t2 = 30 Pa, the change in leakage L = 1 ml / min. Since this change in leakage is less than the first preset change threshold of 5 ml / min, it can be determined that airbag 22 is not leaking. In some embodiments, the first preset change range A can also be set to 0-5 ml / min, corresponding to... Figure 2 Region A in the text represents the first preset range of variation. When the first pressure t1 = 20 Pa, the air leakage change L = 11 ml / min. At this time, the air leakage change exceeds the first preset range of variation A, thus it is determined that the airbag 22 is leaking. Subsequently, when the pressure is increased until the first pressure t2 = 30 Pa, the air leakage change L = 1 ml / min. At this time, the air leakage change falls into the first preset range of variation A, so it can be determined that the airbag 22 is not leaking.

[0100] Furthermore, the control module can also monitor the change in leakage during the pressure reduction process to determine whether the change in leakage during airbag pressure adjustment is related to airbag 22 leakage. In one embodiment, the user can pre-set a first preset change threshold or a first preset change range through the control module 122. For example, taking the first preset change threshold as 5 ml / min, when the first pressure t1 = 10 Pa, the leakage change L = 6 ml / min. At this time, the leakage change is greater than the first preset change threshold of 5 ml / min, thus determining that airbag 22 has leaked; subsequently, when the pressure continues to decrease until the first pressure t2 = 5 Pa, the leakage change L = 1 ml / min. At this time, the leakage change is less than the first preset change threshold of 5 ml / min, thus determining that airbag 22 has not leaked. Alternatively, the first preset variation range B can be set to 0-5 ml / min. For example, when the first pressure t1 = 10 Pa, the leakage variation L = 6 ml / min. At this time, the leakage variation exceeds the first preset variation range B, and it is determined that the airbag 22 has leaked. When the pressure is subsequently reduced until the first pressure t2 = 5 Pa, the leakage variation L = 1 ml / min. At this time, the leakage variation falls into the first preset variation range B, so it can be determined that the airbag 22 has not leaked.

[0101] In another embodiment, besides using the change in leakage between different first pressures to determine whether the airbag 22 has leaked, the leakage of the medical ventilation device under different first pressures can also be directly used to determine whether the airbag 22 has leaked. The control module 122 acquires the leakage of the medical ventilation device under different first pressures. If the leakage corresponding to the current first pressure and the leakage corresponding to the previous N first pressures are both less than a first preset leakage threshold or fall within a preset leakage range, then it is determined that the airbag 22 has not leaked. If the leakage corresponding to the current first pressure and the leakage corresponding to the previous N first pressures are both greater than the first preset leakage threshold or exceed the preset leakage range, then it is determined that the airbag has leaked. Here, N is an integer greater than or equal to 1.

[0102] For example, see details. Figure 3 As shown, Figure 3 To generate a curve showing the relationship between the first pressure and the corresponding leakage rate during the increase of airbag 22 pressure, the user can pre-set a first preset leakage rate threshold or a preset leakage rate range via control module 122. Taking a first preset leakage rate threshold of 12 ml / min as an example, and with N set to 3, control module 122 acquires three first pressures preceding the current first pressure, t1, t2, and t3, and acquires three consecutive leakage rates L1, L2, and L3 corresponding to each first pressure. At the first pressure t1 = 10 Pa, the leakage rate L1 = 40 ml / min; at the first pressure t2 = 15 Pa, the leakage rate L2 = 29 ml / min; and at the first pressure t3 = 20 Pa, the leakage rate L3 = 21 ml / min. If the pressure is subsequently increased until the current first pressure t4 = 25 Pa, the leakage rate L4 = 15 ml / min, which is greater than the first preset leakage rate threshold of 12 ml / min, indicating that airbag 22 is leaking. Furthermore, when the first pressure t1 = 20 Pa, the leakage rate L1 = 21 ml / min; when the first pressure t2 = 25 Pa, the leakage rate L2 = 15 ml / min; when the first pressure t3 = 30 Pa, the leakage rate L3 = 11 ml / min; and when the pressure is subsequently increased until the current first pressure t4 = 35 Pa, the leakage rate L4 = 10 ml / min, which is less than the first preset leakage rate threshold of 12 ml / min. Therefore, it can be determined that the airbag 22 did not leak when the first pressure t4 = 35 Pa.

[0103] In another embodiment, the airbag leakage can be determined by a dual assessment of leakage volume and leakage change. Specifically, the leakage volume corresponding to the current first pressure is compared with the leakage volumes corresponding to the previous N first pressures to obtain the leakage change at the current first pressure. If the leakage volume corresponding to a certain first pressure is less than a first preset leakage volume threshold or falls within a preset leakage volume range, and the leakage change at that first pressure is less than a first preset change threshold or falls within a first preset change range, then it is determined that the airbag has not leaked at that first pressure; otherwise, it is determined that the airbag has leaked.

[0104] In one embodiment, the control module 122 is further configured to, upon determining that the airbag 22 has leaked, increase the first pressure to obtain a target pressure, and then control the pressure adjustment module 121 to adjust the pressure of the airbag 22 according to the target pressure. It is understood that, in order to compensate for airbag 22 leakage and maintain ventilation, the control module 122 can increase the first pressure to the target pressure.

[0105] Specifically, the control module 122 is also used to, after determining that the airbag 22 has leaked, increase the first pressure to obtain the target pressure, and control the pressure adjustment module 121 to adjust the pressure of the airbag 22 according to the target pressure. Then, it continues to determine whether the airbag 22 has leaked based on at least two new leakage amounts and / or changes in at least two leakage amounts. It should be noted that after the pressure adjustment module 121 increases the pressure of the airbag 22 to the target pressure, the control module 122 still needs to monitor the leakage of the airbag 22. Specifically, it obtains the leakage amounts corresponding to at least two new first pressures, and then compares and analyzes the changes in these two leakage amounts. By checking whether there is a significant change between the two leakage amounts of the airbag 22 after adjusting the target pressure, it determines the leakage of the airbag 22 based on the changes. By continuously monitoring the leakage, it helps medical staff to promptly detect abnormal airbag pressure, ensuring the stable operation of the airbag 22 and related medical equipment, and guaranteeing normal ventilation for the patient.

[0106] In another embodiment, the control module 122 is further configured to, after determining that the airbag 22 has no leakage, reduce the first pressure to obtain a target pressure, and then control the pressure adjustment module 121 to adjust the pressure of the airbag 22 according to the target pressure. It is understood that, in order to ensure that the airbag 22 operates within a safe pressure range and maintains ventilation, the control module 122 can improve patient comfort by reducing the first pressure to the target pressure.

[0107] Specifically, the control module 122 is also used to reduce the first pressure to obtain the target pressure after determining that the airbag 22 has no leakage, and then control the pressure adjustment module 121 to adjust the pressure of the airbag 22 according to the target pressure. It should be noted that after the pressure adjustment module 121 reduces the pressure of the airbag 22 to the target pressure, the control module 122 still needs to monitor the leakage of the airbag 22. Specifically, it obtains the leakage volume corresponding to at least two new first pressures, and then compares and analyzes the changes in the two new leakage volumes to determine the leakage status of the airbag 22. By continuously monitoring the leakage volume, medical staff can promptly detect abnormal airbag pressure, ensuring the stable operation of the airbag 22 and related medical equipment, and guaranteeing normal ventilation for the patient.

[0108] In one embodiment, during the process of determining the target pressure of the airbag based on at least two leakage amounts and / or changes in at least two leakage amounts, the control module 122 specifically determines at least one first pressure that satisfies a first condition from different first pressures based on at least two leakage amounts and / or changes in at least two leakage amounts, and determines the target pressure based on the at least one first pressure; wherein, the first condition includes at least one of the following:

[0109] (1) Less than the first preset leakage threshold or falls within the first preset leakage range;

[0110] (2) Compare the leakage change between at least two first pressures, where the leakage change is less than a first preset change threshold or within the first preset change range.

[0111] For example, taking condition (2) as an example, it can be understood that the control module 122 compares the leakage amounts of at least two first pressures, which can be the current first pressure and the previous first pressure. Therefore, by comparing the current leakage amount under the current first pressure with the previous leakage amount under the previous first pressure, the leakage change between the two can be determined, and then it can be determined whether the leakage change meets the first condition. Specifically, the leakage change can be compared with a first preset change threshold or it can be determined whether the leakage change is within the first preset change range. For example, taking the first preset change threshold as an example, the first preset change threshold is set to 6 ml / min. Referring to Table 1, the control module 122 compares the leakage amounts of 16 ml / min and 21 ml / min respectively, and determines that the leakage change between the two is 5 ml / min, which is less than 6 ml / min. Therefore, the first pressure with a pressure value of 25 Pa meets the first condition. In one embodiment, the target pressure can also be set to 25 Pa.

[0112] Table 1

[0113] First pressure air leakage Change in leakage (compared to the leakage at the previous pressure) 10Pa 40 ml / min / 15Pa 29 ml / min 11 ml / min 20Pa 21 ml / min 8 ml / min 25Pa 16 ml / min 5 ml / min

[0114] Furthermore, the control module 122 determines the target pressure based on at least one first pressure, which can be done in various ways, as described in the following embodiments one through six.

[0115] Optionally, in Embodiment 1, among the first pressures where the leakage is less than a first preset leakage threshold or falls within the first preset leakage range, the first pressure with the smallest leakage is determined as the target pressure. For example, if the first preset leakage threshold is set to 12 ml / min, referring to Table 2, then 30 Pa meets the condition, and the target pressure is determined to be 30 Pa.

[0116] Optionally, in Embodiment 2, the first pressure with the smallest change in leakage among the first pressures within the first preset change range, where the change in leakage is less than a first preset change threshold, is determined as the target pressure. Referring to Table 2, the first preset change threshold is set to 6 ml / min. If the leakage changes corresponding to 25 Pa and 30 Pa meet the conditions, then the target pressure is determined to be either 25 Pa or 30 Pa. Alternatively, the target pressure can be determined by combining at least one of Embodiments 1, 3 to 6.

[0117] Optionally, in Embodiment 3, among at least one first pressure that satisfies the first condition, the smallest first pressure is determined as the target pressure. For example, referring to Table 2, if the first condition is satisfied by 30 Pa and 25 Pa, then 25 Pa is determined as the target pressure.

[0118] Optionally, in Embodiment 4, among at least one first pressure that satisfies the first condition, the first pressure where the leakage rate changes stably is determined as the target pressure. For example, referring to Table 2, the leakage rate changes corresponding to 25 Pa and 30 Pa are both 5 ml / min, indicating that the leakage rate is basically stable when the first pressure is 25 Pa, and 25 Pa can ultimately be selected as the target pressure. In other words, among multiple first pressures where the leakage rate changes stably, the smaller first pressure is selected as the target pressure.

[0119] It should be noted that, in the embodiments of this application, the stable change in leakage amount is used to indicate that the change in leakage amount is within a preset range or that the change in leakage amount is 0.

[0120] Optionally, in conjunction with other embodiments, if the change in leakage volume is stable among at least one first pressure that satisfies the first condition, then embodiment four is executed, and the first pressure with a stable change in leakage volume, and which is the smaller of the first pressures with stable changes in leakage volume, is determined as the target pressure; if the change in leakage volume is not stable, then the target pressure is determined based on the execution result of other embodiments.

[0121] Table 2

[0122] First pressure air leakage Change in leakage (compared to the leakage at the previous pressure) 10Pa 40 ml / min / 15Pa 29 ml / min 11 ml / min 20Pa 21 ml / min 8 ml / min 25Pa 16 ml / min 5 ml / min 30Pa 11 ml / min 5 ml / min

[0123] Optionally, in Embodiment 5, the average value of all or part of the first pressures that meet the first condition is determined as the target pressure. For example, for Table 2, if the first pressures that meet the first condition are 25 Pa and 30 Pa, then the average value of 25 Pa and 30 Pa, which is 27.5 Pa or 28 Pa (adjustable adaptively due to data accuracy), can be determined as the target pressure.

[0124] Optionally, in Embodiment Six, a pressure fine-tuning range is determined based on at least one first pressure that satisfies a first condition, and one pressure within the pressure fine-tuning range is determined as the target pressure.

[0125] Understandably, further fine-tuning can be performed among the multiple first pressures that meet the first condition to determine the optimal target pressure. Specifically, within the pressure fine-tuning range, multiple third pressures are determined, and the leakage rate of the medical ventilation equipment corresponding to each third pressure is determined. The third pressure whose leakage rate meets the second condition is then determined as the target pressure.

[0126] The pressure fine-tuning range is determined based on a first pressure that satisfies the condition that the leakage change is less than a first preset change threshold or falls within the first preset change range. For example, taking the first preset change threshold as an example, the first preset change threshold is 6 ml / min (see Table 2). Since the first pressure that satisfies the condition that the leakage change is less than the first preset change threshold is 25 Pa or 30 Pa, the pressure fine-tuning range can be 25 Pa to 30 Pa; or, the pressure fine-tuning range can be 22 Pa to 30 Pa; or, the pressure fine-tuning range can be 25 Pa to 32 Pa; or, the pressure fine-tuning range can be 22 Pa to 32 Pa. This application does not limit the determination of the pressure fine-tuning range; it only needs to be determined around the first pressure that satisfies the first condition.

[0127] The method for determining multiple third pressures within the pressure fine-tuning range is not limited. They can be selected randomly; or multiple third pressures can be determined at fixed intervals; or pressure values ​​for which leakage has not been previously determined can be selected. For example, if the pressure fine-tuning range is 25 Pa to 32 Pa, then the third pressures can be 26 Pa, 28 Pa, and 32 Pa.

[0128] The second condition may include at least one of the following: determining a leakage rate less than a second preset leakage rate threshold or falling within a second preset leakage rate range from at least two leakage rates; comparing the leakage change between at least two third pressures, where the leakage change is less than a second preset change rate threshold or falls within a second preset change rate range. It is understood that determining the target pressure from the third pressures that satisfy the second condition is fundamentally consistent with determining the target pressure from the first pressures that satisfy the first condition; the difference lies in the threshold values ​​used. It is understood that the second preset leakage rate threshold is less than the first preset leakage rate threshold, the second preset leakage rate range is a subset of the first preset leakage rate range, the second preset change rate threshold is less than the preset change rate threshold, and the second preset change rate range is a subset of the preset change rate range; the purpose is to select the optimal target pressure through more stringent conditions, which will not be elaborated further here.

[0129] Different first pressures exist in the above embodiments. The adjustment of the first pressure will be described next.

[0130] In one embodiment, the control module 122 is further configured to, after adjusting the first pressure, confirm whether the current first pressure is greater than or equal to the pressure adjustment upper limit value; if the current first pressure is greater than or equal to the pressure adjustment upper limit value, control the alarm module to sound an alarm; if the current first pressure is less than the pressure adjustment upper limit value, increase the first pressure, and control the pressure adjustment module 121 to adjust the pressure of the airbag 22 according to the adjusted pressure.

[0131] Understandably, the airbag pressure control device 12 also includes an alarm module. The control module 122 is electrically connected to the alarm module. The user can set the upper limit of pressure adjustment through the control module 122. Specifically, the upper limit of pressure adjustment can be a preset maximum limit of pressure adjustment. After the airbag 22 leaks, the control module 122, while adjusting the airbag pressure by increasing the first pressure, can simultaneously compare the current first pressure with the upper limit of pressure adjustment to determine whether the current first pressure is greater than or equal to the upper limit of pressure adjustment. If so, the alarm condition of excessive pressure is triggered, and the control module 122 controls the alarm module to sound an alarm, thereby reminding the user to appropriately reduce the pressure and avoid excessive pressure on the airbag 22, which could lead to safety hazards for the patient. Furthermore, when the current first pressure is detected to be less than the upper limit of pressure adjustment, the first pressure is increased normally, and the pressure adjustment module 121 is controlled to continue adjusting the pressure of the airbag 22.

[0132] In one embodiment, the control module 122 is further configured to, after adjusting the first pressure, confirm whether the current first pressure is less than or equal to the lower limit of pressure adjustment. If the current first pressure is less than or equal to the lower limit of pressure adjustment, the control module 122 is configured to trigger an alarm. If the current first pressure is greater than the lower limit of pressure adjustment, the first pressure is reduced, and the pressure adjustment module 121 is controlled to adjust the pressure of the airbag 22 according to the adjusted pressure. It is understood that, to ensure the function of the airbag 22 and patient safety, the user can set the lower limit of pressure adjustment through the control module 122. Specifically, the lower limit of pressure adjustment can be a preset minimum safe threshold for pressure adjustment. The reduced first pressure cannot be lower than this value. Therefore, during the process of reducing the first pressure to adjust the airbag pressure, the current first pressure can be compared with the lower limit of pressure adjustment to determine whether the current first pressure is less than or equal to the lower limit of pressure adjustment. If so, an alarm condition for low pressure is triggered, and the control module 122 controls the alarm module to trigger an alarm, thereby reminding the user to appropriately increase the pressure to ensure that the airbag pressure does not fall below the safe threshold and avoid treatment risks.

[0133] In one embodiment, the control module 122 is further configured to control the pressure regulation module 121 to maintain a constant pressure when the current first pressure is greater than or equal to the pressure regulation upper limit, and to issue a first alarm through the alarm module. The first alarm indicates that the medical ventilation device 11 has a leak of other types besides cuff leakage. It should be noted that if the first pressure is adjusted to the point where it is approaching the pressure regulation upper limit, and then the first pressure is further increased, but the detected leakage of the cuff 22 remains unchanged or the overall leakage continues to increase, the control module 122 controls the pressure regulation module 121 to maintain a constant pressure and issues a first alarm through the alarm module, thereby reminding the user to check for leaks other than cuff leakage. For example, leaks may exist in other ventilation components of the medical ventilation device 11; maintaining pressure while issuing an alarm ensures that patient treatment is not affected.

[0134] In one embodiment, the control module 122 is used to increase the first pressure by a step size, wherein the step size is a preset fixed step size, or the number of consecutive increases of the current first pressure is determined, and the size of the step size is determined according to the number of consecutive increases; the more consecutive increases, the smaller the step size. It is understood that when increasing the first pressure, the control module 122 can control and adjust the step size to gradually increase the first pressure using the step size as a standard, thereby achieving precise and stable adjustment of the airbag pressure. The step size can be a preset fixed step size; for example, if the preset fixed step size is set to 0.5 Pa, then the control module 122 increases the first pressure by 0.5 Pa each time. Alternatively, the step length can be dynamically adjusted based on the number of consecutive increases in the first pressure, making the first pressure adjustment more adaptable to the real-time airbag pressure. For example, the initial step length can be set to 1 Pa, and the number of consecutive increases can be set to 5. After the control module 122 increases the first pressure 5 times consecutively, the control module 122 can control the step length to decrease, for example, from 1 Pa to 0.5 Pa or other smaller step lengths, thereby avoiding the airbag 22 pressure adjustment from being too fast or exceeding the pressure adjustment upper limit due to the step length being too large.

[0135] In another embodiment, the control module 122 is used to reduce the first pressure in a second step, wherein the second step is a preset fixed step, or the number of consecutive reductions of the current first pressure is determined, and the size of the second step is determined based on the number of consecutive reductions; the more consecutive reductions, the smaller the second step. It should be noted that when reducing the first pressure, the control module 122 can control and adjust the step size, gradually reducing the first pressure with the second step as a standard, to achieve precise and stable adjustment of the airbag pressure. The second step can be a preset fixed step; for example, if the preset fixed step is set to 0.5 Pa, then the control module 122 reduces the first pressure by 0.5 Pa each time. Alternatively, the size of the second step can be dynamically adjusted based on the number of consecutive decreases in the first pressure, making the adjustment of the first pressure more adaptable to the real-time pressure of the airbag 22. For example, the initial second step can be set to 1 Pa and the number of consecutive decreases can be set to 5. After the control module 122 decreases the first pressure 5 times consecutively, the control module 122 can control the second step to decrease, for example, from 1 Pa to 0.5 Pa or other smaller step sizes, thereby avoiding the airbag 22 pressure adjustment from being too fast or exceeding the lower limit of pressure adjustment due to the step size being too large.

[0136] In one embodiment, the control module 122 determines a target pressure based on a plurality of first pressures, wherein the first pressure used to determine the target pressure may be a pressure that meets the first condition in the above embodiments. For example, the first pressure that meets the first condition during the pressurization process described in Table 1 or Table 2 above can be used to determine the target pressure, or the first pressure that meets the first condition during the depressurization process can be used to determine the target pressure. For example, after the result of the judgment is that the airbag 22 has not leaked, the first pressure that meets the first condition is used to determine the target pressure during the depressurization process. By adjusting the first pressure, a new first pressure will be determined, and as long as this first pressure meets the first condition, it can be used to determine the target pressure.

[0137] In some embodiments mentioned above, the first pressure is pressurized and / or depressurized multiple times. For example, after depressurizing the first pressure, the leakage status of the airbag 22 is assessed, and the pressure is increased or decreased again based on the assessment result. During the multiple pressurization and / or depressurization processes, multiple first pressures meeting the first condition can be determined. Alternatively, first pressures during different pressurization / depressurization periods can be collected, and the first pressures meeting the first condition can be determined from these first pressures. The target pressure can then be determined using only the first pressure during the pressurization period or only the first pressure during the depressurization period. Of course, any first pressure during any pressurization / depressurization period can be selected to determine the target pressure.

[0138] In one embodiment, the control module 122 is further configured to control the pressure regulation module 121 to regulate the cuff 22 with a first pressure. For example, during the process of regulating the cuff 22 with the first pressure, the control module 122 can be configured to perform a pressurization step, increasing the first pressure and regulating the cuff pressure in real time to provide sufficient ventilation for the patient. Alternatively, the control module 122 can also be configured to perform a depressurization step, reducing the first pressure to regulate the cuff pressure to a safe pressure level, avoiding discomfort to the patient due to excessively high cuff pressure, and adapting to different patient needs and treatment conditions.

[0139] In one embodiment, for the pressurization step, the control module 122 can gradually increase the first pressure by a step length based on the current first pressure. The control module 122 obtains the leakage amount corresponding to different first pressures through the medical ventilation device 11, and determines at least one first pressure that satisfies a first condition based on these leakage amounts and / or changes in at least two leakage amounts. The latest first pressure after performing the pressurization step is determined based on the at least one first pressure that meets the first condition.

[0140] The control module 122 acquires a first pressure that meets a first condition during the pressurization step, and determines the latest first pressure after performing the pressurization step based on at least one first pressure that meets the first condition. In one embodiment, the latest first pressure after performing the pressurization step may be an initial pressure value used for subsequent depressurization steps.

[0141] In some embodiments, taking the current first pressure of the airbag 22 as 20 Pa as an example, before the control module 122 performs the pressurization step, the first step length can be set to 5 Pa in advance. Then, the control module 122 increases the first pressure to 25 Pa at intervals of the first step length and measures the corresponding leakage. If the leakage change is less than a first preset leakage threshold, for example, the first preset leakage threshold is set to 10 ml / min, or the first preset leakage range is set to 0 to 10 ml / min, and the actual leakage change is 5 ml / min, then 25 Pa can be determined as the latest first pressure, and the control module 122 uses the current first pressure as the latest first pressure after performing the pressurization step.

[0142] In another embodiment, for the depressurization step, the control module 122 can reduce the first pressure by a second step size based on the current first pressure. In one embodiment, the depressurization step is performed after the above-mentioned pressurization step. In this case, the control module 122 reduces the first pressure by a second step size smaller than the first step size based on the latest first pressure after the pressurization step. The control module 122 obtains the leakage amount corresponding to different first pressures through the medical ventilation device 11, and determines at least one first pressure that meets the conditions based on the changes in these leakage amounts and / or at least two leakage amounts. The latest first pressure after performing the depressurization step is determined based on the at least one first pressure that meets the conditions.

[0143] In some embodiments, taking a first pressure of 25 Pa for the airbag 22 after the pressurization step as an example, before the control module 122 performs the depressurization step, the second step length can be set to 3 Pa in advance. Then, the control module 122 reduces the first pressure to 22 Pa at intervals of the second step length and measures the corresponding leakage. If the change in leakage is less than a first preset leakage threshold, for example, the first preset leakage threshold is set to 10 ml / min, or the first preset leakage range is set to 0 to 10 ml / min, and the actual change in leakage is 5 ml / min, then 22 Pa can be determined as the latest first pressure, and the control module 122 uses the current first pressure as the latest first pressure after performing the depressurization step.

[0144] In another embodiment, the control module 122 is further configured to update the first step length with a step size smaller than the second step length, return to continue executing the pressurization and depressurization steps until the latest first step length or the latest second step length decreases to a preset minimum step size, or after the number of pressurization / depressurization cycles reaches a preset number, adjust the pressure of the airbag 22 according to the historically obtained first pressures that meet the conditions, based on at least one first pressure adjustment module 121 that meets the conditions. For example, a target pressure is determined based on the historically obtained first pressures that meet the conditions, and then the pressure adjustment module is controlled to adjust the pressure of the airbag according to the target pressure.

[0145] Optionally, the step size used in the pressurization step performed after the depressurization step may be smaller than that used in the previous pressurization step, and / or, the conditions used to select the first pressure in the re-pressurization step may be more stringent than those used in the previous pressurization step, in order to select the optimal target pressure. Similarly, optionally, the step size used in the depressurization step performed after the pressurization step may be smaller than that used in the previous depressurization step, and / or, the conditions used to select the first pressure in the re-depressurization step may be more stringent than those used in the previous depressurization step, in order to select the optimal target pressure.

[0146] Understandably, updating the first step length can involve gradually decreasing the first step length until it decreases to a preset minimum step length, which can be a preset minimum change in pressure adjustment. Optionally, when returning to continue executing the pressurization and depressurization steps, the number of times the return is executed can be recorded to determine if the number of returns has reached a preset number. This preset number can be a maximum number of returns set by the user in advance, for example, a preset number of 3. If, after 3 returns to execute the pressurization and depressurization steps, the control module 122 determines the target pressure based on the first pressures that meet the conditions in the historical records of the pressurization and depressurization steps. Subsequently, the control module 122 controls the pressure adjustment module 121 to adjust the pressure of the airbag 22 according to the target pressure. Therefore, by setting a preset minimum step length and a preset number of returns, excessive adjustment of the first pressure can be limited, improving the stability of airbag pressure adjustment.

[0147] It should be noted that, in some embodiments, the control module 122 may also select at least one first pressure for statistical analysis, and use the statistical value (e.g., the median of the average first pressure or other statistical methods) as the latest first pressure after performing the pressurization step / depressurization step.

[0148] The specific examples of the judgment of the first condition have been explained in the above embodiments and will not be repeated here.

[0149] In the above embodiments, the pressurization step is performed first, followed by the depressurization step. However, it should be noted that in another embodiment, the depressurization step can be performed first, followed by the pressurization step; only the order of execution changes. For specific implementation details, please refer to the descriptions in the relevant embodiments, which will not be repeated here.

[0150] In one embodiment, the control module 122 is further configured to control the pressure regulation module 121 to sequentially adjust the airbag 22 at different first pressures. Specifically, it can control the pressure regulation module 121 to sequentially increase the first pressure based on the current first pressure. It should be noted that the control module 122 increases the pressure by controlling the pressure regulation module 121 to supply gas to the inside of the airbag 22 at any suitable first pressure. During gas supply, the control module 122 can sequentially increase the first pressure based on the current first pressure, for example, by sequentially increasing the airbag pressure in predetermined steps, thereby achieving precise control of the airbag pressure and avoiding patient discomfort caused by excessively rapid pressure increases. In some embodiments, the initial first pressure is the peak airway pressure of the medical ventilation device 11. It should be understood that the peak airway pressure is the maximum pressure reached within the airway 21 during the inspiratory phase of the respiratory cycle. The control module 122 acquires the peak airway pressure detected by the medical ventilation device 11, and then uses the peak airway pressure as the first pressure for the control pressure regulation module 121 to adjust the cuff pressure, which is the reference for subsequent pressure regulation. This enables dynamic adjustment of pressure according to the patient's specific breathing condition, thereby improving the personalization of cuff pressure management.

[0151] The leakage rate of a medical ventilation device under different initial pressures can be determined by any of the following embodiments.

[0152] In one embodiment, the control module 122 is further configured to determine whether the medical ventilation device 11 meets a preset leakage standard based on the parameters of the medical ventilation device 11 in the first operating state or the leakage amount of the medical ventilation device 11. If the leakage amount exceeds the preset leakage standard, the control pressure adjustment module 121 sequentially adjusts the air bag 22 with different first pressures. The first operating state of the medical ventilation device 11 is when the inspiratory valve and expiratory valve of the medical ventilation device 11 are in the closed state; or the first operating state can be understood as the inspiratory maintenance operation when the patient does not breathe spontaneously.

[0153] The medical ventilation device 11 can automatically maintain inhalation when the patient is not breathing spontaneously, which is equivalent to closing the inhalation valve and the expiration valve. At this time, the medical ventilation device 11 operates in the first operating state.

[0154] Optionally, the medical ventilation device 11 may include a respiratory monitoring module 111, and a control module 122 may be used to acquire the patient's respiratory parameters through the respiratory monitoring module 111. For example, the respiratory parameters may include the patient's tidal volume, respiratory flow rate, airway pressure, etc. Taking airway pressure as an example, the control module 122 may acquire the patient's airway pressure when the medical ventilation device 11 is in the first operating state through the respiratory monitoring module 111. For example, the airway pressure may be detected by the pressure detection module in the respiratory monitoring module, and then the airway pressure may be compared with a preset airway pressure threshold. Based on the comparison result between the airway pressure and the preset airway pressure threshold, it may be determined whether the medical ventilation device 11 meets the preset leakage standard. When the patient is not breathing spontaneously, the medical ventilation device 11 performs automatic inspiratory maintenance operation. That is, the medical ventilation device 11 can maintain the airway pressure within a certain range by continuously closing the inspiratory valve and expiratory valve when the patient finishes inhaling. During the airway pressure maintenance period, the pressure detection module can detect the airway pressure and compare it with the preset airway pressure threshold. If the airway pressure drops, it indicates that the medical ventilation device 11 is leaking, and thus it can be determined that the medical ventilation device 11 does not meet the preset leakage standard.

[0155] In another embodiment, the control module 122 can also determine whether the medical ventilation device 11 meets the preset leakage standard based on the leakage amount of the medical ventilation device 11. Specifically, the medical ventilation device 11 is used to acquire the patient's respiratory parameters through the respiratory monitoring module 111. The respiratory parameters are input into the leakage model for prediction processing to obtain the leakage flow rate per unit time. By accumulating the leakage flow rates over a preset time period, the leakage amount of the medical ventilation device within the preset time period is obtained, and the leakage amount is used to determine whether the medical ventilation device meets the preset leakage standard.

[0156] Optionally, respiratory parameters include the patient's airway pressure. The airway pressure is detected by the pressure detection module in the respiratory monitoring module 111, and the airway pressure is input into the leakage model for prediction processing to obtain the leakage flow rate per unit time. By accumulating the leakage flow rates over a preset time period, the leakage amount of the medical ventilation device 11 within the preset time period is obtained, and the leakage amount is used to determine whether the medical ventilation device 11 meets the preset leakage standard.

[0157] Optionally, the leakage model can include a rigid leakage model, a pinhole model, and an elastic leakage model. Taking the rigid leakage model as an example, the leakage velocity can be calculated using the following formula:

[0158]

[0159] Among them, F leak Let P be the leakage flow rate, P be the airway pressure, and k be the leakage factor.

[0160] Optionally, the respiratory monitoring module 111 is used to monitor the patient's respiratory parameters, such as detecting the flow rate information of the medical ventilation device 11 providing mechanical ventilation to the patient, and calculating the leakage factor k based on the airway pressure P and the flow rate information.

[0161] In another embodiment, the respiratory parameters include inspiratory tidal volume Vti and expiratory tidal volume Vte. The control module is used to obtain the leakage volume for one respiratory cycle based on the inspiratory and expiratory tidal volumes, and to determine whether the medical ventilation device meets a preset leakage standard based on the leakage volume. For example, the leakage volume for one respiratory cycle is determined based on the difference between the inspiratory tidal volume Vti and the expiratory tidal volume Vte. The leakage volume for one respiratory cycle is compared with a preset leakage volume threshold. If the leakage volume for one respiratory cycle is greater than the preset leakage volume threshold, the medical ventilation device is determined to meet the preset leakage standard; otherwise, it does not meet the preset leakage standard.

[0162] In another embodiment, the respiratory monitoring module 111 of the medical ventilation device 11 of this application includes flow rate sensors respectively disposed at the inspiratory and expiratory ends of the medical ventilation device 11, which can monitor the patient's respiratory flow rate. The control module is used to acquire a first flow rate parameter at the inspiratory end and a second flow rate parameter at the expiratory end through the flow rate sensors at the inspiratory and expiratory ends of the medical ventilation device. Based on the second flow rate parameter and the first flow rate parameter, the leakage parameters of the medical ventilation device are obtained. The leakage parameters include at least one of the following: leakage volume per respiratory cycle, leakage volume per minute, and leakage volume per minute percentage. The leakage parameters of the medical ventilation device are used to determine whether the medical ventilation device meets a preset leakage standard.

[0163] Optionally, the control module can acquire a first flow rate parameter at the inspiratory end and a second flow rate parameter at the expiratory end using flow rate sensors at the inspiratory and expiratory ends of the medical ventilation device 11. Based on the difference between the second and first flow rate parameters, the leakage amount of the medical ventilation device 11 for each respiratory cycle is obtained, and the leakage amount is used to determine whether the medical ventilation device 11 meets a preset leakage standard. The control module 122 calculates the leakage amount for each respiratory cycle by subtracting the first and second flow rate parameters measured by the flow sensor; for example, it can be the leakage amount TVleak per unit respiratory cycle. The magnitude of TVleak is then used to determine whether the medical ventilation device 11 is leaking.

[0164] Optionally, the control module 122 can be used to accumulate the leakage of multiple breathing cycles to obtain the cumulative leakage, and to determine whether the leakage exceeds the preset leakage standard by judging whether the cumulative leakage meets the preset range of the cumulative leakage.

[0165] For example, the control module 122 calculates the cumulative leakage by summing up the TVleak values ​​over multiple respiratory cycles or one minute, such as the minute leakage value MVleak. It then uses the MVleak value to determine whether the medical ventilation device 11 is leaking. Alternatively, after calculating the cumulative leakage, the control module 122 can obtain the total air delivery volume of the medical ventilation device 11 through the respiratory monitoring module 111, compare the cumulative leakage with the total air delivery volume, for example, by dividing the minute leakage value MVleak by the total air delivery volume to obtain the leakage percentage (leak%). By determining whether the leakage percentage falls within a preset range, it can determine whether the leakage exceeds a preset leakage standard.

[0166] In summary, whether the medical ventilation device 11 is leaking and the specific leakage amount can be determined directly using the leakage model in the above embodiments. Alternatively, the leakage amount can be determined by obtaining the first flow rate parameter at the inspiratory end and the second flow rate parameter at the expiratory end in the above embodiments. In another embodiment, it can be determined that the medical ventilation device 11 is leaking when it is in the first operating state, and then the specific leakage amount can be obtained using the leakage model in the above embodiments or the first flow rate parameter at the inspiratory end and the second flow rate parameter at the expiratory end.

[0167] In one embodiment, a second aspect of this application provides an airbag leakage detection device 13, including a pressure adjustment module 131, a pressure monitoring module 133, and a control module 132. The control module 132 is connected to the pressure adjustment module 131 and is used to control the pressure adjustment module 131 to sequentially adjust the airbag pressure with different first pressures. During the process of the control module 132 controlling the pressure adjustment module 131 to adjust the airbag pressure, the first pressure can be a preset pressure value or different specific pressure values ​​selected by the user. The adjustment can be performed sequentially with different first pressures, either by sequentially adjusting with multiple first pressures of increasing intensity to gradually increase the airbag pressure, or by sequentially adjusting with multiple first pressures of decreasing intensity to gradually decrease the airbag pressure.

[0168] Furthermore, when the control module 132 controls the pressure regulation module 131 to adjust the cuff pressure, it can obtain the leakage volume determined by the medical ventilation device 11 under different first pressures, wherein each first pressure corresponds to a leakage volume. It should be understood that during the process of using the medical ventilation device 11 to help patients who cannot breathe independently or require respiratory support to breathe, the leakage volume can be detected in real time. The leakage volume can represent the total amount of air leaked from the airway components and cuff of the medical ventilation device 11 under different first pressures. By detecting the leakage volume, the leakage situation of the cuff under different pressure conditions can be reflected. The airway components may include inflation tubes, breathing tubing, etc., which have been described in the above embodiments and will not be repeated here.

[0169] Furthermore, the difference between the airbag leakage detection device 13 and the airbag pressure control device 12 in this application embodiment is that the control module 132 of the airbag leakage detection device 13, after obtaining the leakage amount determined under different first pressures from the medical ventilation device 11, can determine whether the airbag has leaked based on the changes in at least two leakage amounts. Before the control module 132 controls the pressure adjustment module 131 to adjust the airbag pressure according to the target pressure, it can also compare and analyze the at least two obtained leakage amounts, and determine whether the airbag has leaked by checking whether there is a significant change between the two leakage amounts.

[0170] In one embodiment, the control module 132 is used to compare the leakage amount corresponding to the current first pressure with the leakage amount corresponding to the previous N first pressures to obtain the leakage change amount of the current first pressure. If the leakage change amount is greater than a first preset change amount threshold or exceeds the first preset change amount range, it is determined that the airbag under the current first pressure has leaked. If the leakage change amount is less than the first preset change amount threshold or falls within the first preset change amount range, it is determined that the airbag under the current first pressure has not leaked. Here, the current first pressure is greater than the previous N first pressures, N is an integer greater than or equal to 1, and the leakage change amount is positively correlated with the degree of airbag leakage. In another embodiment, the control module 132 is used to compare the leakage amount corresponding to the current first pressure with the leakage amounts corresponding to the previous N first pressures, and determine the leakage change amount of the current first pressure relative to the leakage amounts corresponding to the previous N first pressures. If the leakage change amount is greater than a first preset leakage threshold or exceeds a first preset change amount range, it is determined that the airbag under the current first pressure has leaked; if the leakage change amount is less than the first preset leakage threshold or within the first preset change amount range, it is determined that the airbag under the current first pressure has not leaked. Here, the current first pressure is greater than the previous N first pressures, N is an integer greater than or equal to 1, and the leakage change amount is positively correlated with the degree of airbag leakage. Specific implementation methods for determining whether the airbag has leaked in this embodiment can be found in any embodiment of the airbag pressure control device 12 described above, and will not be repeated here.

[0171] The cuff leakage detection device 13 provided in this application embodiment allows users to inflate or deflate the cuff of the endotracheal tube during the process of using an endotracheal tube connected to a medical ventilation device 11 to deliver breathing gas to the patient's trachea. This is achieved through the pressure adjustment module 131 of the cuff leakage detection device 13, which adjusts the pressure of the cuff by inflating or deflating it. The pressure monitoring module 133 measures the pressure of the cuff, and the control module 132 controls the pressure adjustment module 131 to adjust the cuff at different pressures. Simultaneously, the leakage amount determined by the medical ventilation device 11 under different cuff pressures is obtained. Based on the changes in at least two leakage amounts, it is analyzed to determine whether the cuff is leaking. This helps medical staff to detect abnormal cuff pressure in a timely manner, so as to avoid discomfort or complications caused to patients due to excessively high or low cuff pressure, and improve the overall treatment experience of patients.

[0172] In some embodiments, the airbag leakage detection device 13 can be installed inside the medical ventilation device 11, sharing some components with the medical ventilation device 11, or it can be manufactured as a separate product. The specific structure and working principle of each module of the medical ventilation device 11 and the airbag leakage detection device 13 in this application embodiment can be found in the description above. Figure 1 The description of any one embodiment will not be repeated here.

[0173] See Figure 4 As shown, a fourth aspect of this application provides a ventilator system 10, which may include, as shown in the figure, a ventilator system 10. Figure 1 The airbag pressure control device 12 of the first aspect embodiment of this application and the medical ventilation device 11 of the third aspect embodiment of this application, shown above, provide patients with a channel for inhaling and exhaling gas through the breathing tubing of the medical ventilation device 11. The breathing tubing is connected to the breathing module, so that the breathing module can provide mechanical ventilation to the patient. The airbag pressure control device 12 can automatically adjust the airbag pressure to adapt to the physiological differences of different patients, so as to achieve more accurate, real-time and personalized airbag pressure management.

[0174] In some embodiments, see Figure 5 As shown, the ventilator system 10 may include, for example: Figure 1 The medical ventilation device 11 shown and the cuff leakage detection device 13 of the second aspect embodiment of this application can help medical staff to detect abnormal cuff pressure in a timely manner, so as to avoid patient discomfort or complications caused by excessively high or low cuff pressure, and improve the patient's overall treatment experience. The specific structure and working principle of each module of the ventilator system 10 of this application, including the medical ventilation device 11, the cuff pressure control device 12 and the cuff leakage detection device 13, can be referred to the detailed description of any of the above embodiments, and will not be repeated here.

[0175] See Figure 6 As shown, the fifth aspect of this application provides a medical ventilation device 14, including a breathing tubing 141, a breathing module 142, a breathing monitoring module 143, and a control module 144. The difference between the medical ventilation device 14 in the third aspect of this application is that the medical ventilation device 14 does not include a pressure regulating module 152 and a pressure monitoring module 151, but is connected to an external airbag pressure control device 15. The pressure regulating module 152 and the pressure monitoring module 151 are integrated together to form the airbag pressure control device 15. Furthermore, the cuff pressure control device 15 can be used as a plug-in module of the medical ventilation device 14. The medical ventilation device 14 has a plug-in interface that matches the cuff pressure control device 15 plug-in module. When it is necessary to control the pressure of the cuff placed in the patient's airway, the cuff pressure control device 15 plug-in module is inserted into the medical ventilation device 14, and the communication interface of the control module 144 is connected to the communication interfaces of the pressure regulation module 152 and the pressure monitoring module 151. When not in use, the cuff pressure control device 15 plug-in module can be removed from the medical ventilation device 14, so that when the cuff pressure control device 15 needs to be replaced or upgraded, other functions of the medical ventilation device 14 can continue to be used.

[0176] In some embodiments, the airbag pressure data acquired by the airbag pressure control device 15 can be output to the medical ventilation device 14 and displayed on the display module of the medical ventilation device 14, thereby enabling the airbag pressure control device 15 and the medical ventilation device 14 to share the display module. The working principle and specific implementation of airbag pressure adjustment by each module of the medical ventilation device 14 and the airbag pressure control device 15 in this application embodiment can be found in the description of any embodiment of the medical ventilation device 14 in the third aspect embodiment above, and will not be repeated here.

[0177] See Figure 7 As shown, a sixth aspect of this application provides a ventilator system 10, including a medical ventilation device 16, an airbag pressure control device 17, and a control module 18. The working principles and specific implementation methods of the various modules of the medical ventilation device 16 and the airbag pressure control device 17 for adjusting the airbag pressure are similar to those of the medical ventilation devices 11, 14, 12, and 15 described above, and can be referred to the description of any of the above embodiments; further details are omitted here.

[0178] Furthermore, the difference between the ventilator system 10 of this embodiment and the ventilator system 10 of the third aspect embodiment of this application is that the control module 18 is communicatively connected to the medical ventilation device 16 and the cuff pressure control device 17, and is used to control the cuff pressure control device 17 to adjust the cuff sequentially at different first pressures. In some embodiments, the control module 18 can be a wireless communication module, which interacts with the medical ventilation device 16 and the cuff pressure control device 17 wirelessly. Alternatively, the control module 18 can also be a connector that makes electrical contact through a conductor. The cuff pressure control device 17 can be designed as a plug-in module, and the medical ventilation device 16 is provided with a connection port that matches the connector of the control module 18. The medical ventilation device 16 and the cuff pressure control device 17 are electrically connected to the control module 18 through an electrical contact or pin-type connector, so as to receive instructions from the control module 18 and / or upload detection or calculation data to the control module 18. The ventilator system 10 of this application embodiment communicates between the medical ventilation device 16 and the cuff pressure control device 17 through an independent control module 18, which allows users to easily add or remove various modules of the ventilator system 10 according to different clinical needs, thereby improving the flexibility of system use.

[0179] During the process of the control module 18 controlling the airbag pressure control device 17 to adjust the airbag pressure, the first pressure can be a preset pressure value or different specific pressure values ​​selected by the user. The pressure can be adjusted in sequence with different first pressures. The pressure can be gradually increased by adjusting multiple first pressures with increasing intensity, or the pressure can be gradually decreased by adjusting multiple first pressures with decreasing intensity.

[0180] Furthermore, when the control module 18 controls the cuff pressure control device 17 to adjust the cuff pressure, it can obtain the leakage volume determined by the medical ventilation device 16 under different first pressures, where each first pressure corresponds to one leakage volume. It should be understood that during the process of using the medical ventilation device 16 to assist patients who cannot breathe independently or require respiratory support, the leakage volume can be detected in real time. This leakage volume can represent the total amount of air leaked from the airway components and cuff of the medical ventilation device 16 under different first pressures. By detecting the leakage volume, the leakage situation of the cuff under different pressure conditions can be reflected. The airway components may include inflation tubing, breathing tubing, etc. Furthermore, after obtaining the leakage volumes determined under different first pressures from the medical ventilation device 16, the control module 18 can determine the target pressure of the cuff based on the changes in at least two leakage volumes, and control the cuff pressure control device 17 to adjust the cuff pressure according to the target pressure. Understandably, in order to achieve the best ventilation effect and ensure patient comfort, the pressure value that the cuff needs to maintain can be determined by the change in the amount of air leakage of the cuff under different pressures.

[0181] See Figure 8 As shown, Figure 8 This is a flowchart illustrating an airbag pressure control method provided in an embodiment of this application. The method in this embodiment is applied to an airbag pressure control device, which can be the airbag pressure control device 11 described in the first aspect embodiment above. In this embodiment, the control module 122 of the airbag pressure control device 11 is used as the execution subject for explanation. The airbag pressure control method provided in this embodiment includes, but is not limited to, steps S110 to S130:

[0182] Step S110: Control the pressure adjustment module to adjust the airbag sequentially with different first pressures.

[0183] Step S120: Obtain the air leakage of the medical ventilation device under different first pressures, wherein each first pressure corresponds to one air leakage.

[0184] Step S130: Determine the target pressure of the airbag based on the changes in at least two leakage rates, and adjust the pressure of the airbag according to the target pressure control pressure adjustment module.

[0185] The airbag pressure control method provided in this application is applied to an airbag pressure control device. This method controls a pressure adjustment module to sequentially adjust the airbag at different first pressures; and acquires the leakage volume of the medical ventilation device determined by the device under different first pressures, where each first pressure corresponds to one leakage volume; then, based on the changes in at least two leakage volumes, a target pressure for the airbag is determined, and the pressure adjustment module is controlled to adjust the airbag pressure according to the target pressure. In this application embodiment, by controlling the pressure adjustment module to adjust the airbag at different pressures and simultaneously acquiring the leakage volume determined by the medical ventilation device under different airbag pressures, and then analyzing the changes in at least two leakage volumes to determine the target pressure, the pressure adjustment module can be controlled to adjust the airbag pressure according to the target pressure. This allows for automatic adjustment of the airbag pressure to adapt to the physiological differences of different patients, achieving more precise, real-time, and personalized airbag pressure management.

[0186] It should be noted that the above Figure 8 The execution principle of each step can be specifically referred to in the description of any embodiment of the airbag pressure control device 12 above, and will not be repeated here.

[0187] See Figure 9 As shown, Figure 9 This is a flowchart illustrating an airbag leakage detection method provided in an embodiment of this application. The method in this embodiment is applied to an airbag leakage detection device, which can be the airbag leakage detection device 13 described in the second aspect embodiment above. In this embodiment, the control module 132 of the airbag leakage detection device 13 is used as the execution subject for explanation. The airbag leakage detection method provided in this embodiment includes, but is not limited to, steps S210 to S230:

[0188] Step S210: Control the pressure adjustment module to adjust the airbag sequentially with different first pressures.

[0189] Step S220: Obtain the air leakage of the medical ventilation device under different first pressures, wherein each first pressure corresponds to one air leakage.

[0190] Step S230: Determine whether the airbag is leaking based on at least two changes in air leakage.

[0191] The airbag leakage detection method provided in this application is applied to an airbag leakage detection device. This method controls a pressure adjustment module to sequentially adjust the airbag at different first pressures; and acquires the leakage volume of the medical ventilation device determined by the medical ventilation device under different first pressures, where each first pressure corresponds to one leakage volume; then, it determines whether the airbag is leaking based on the changes in at least two leakage volumes. In this application embodiment, by controlling the pressure adjustment module to adjust the airbag at different pressures and simultaneously acquiring the leakage volume determined by the medical ventilation device under different airbag pressures, and then analyzing the changes in at least two leakage volumes, it determines whether the airbag is leaking. This helps medical personnel to promptly detect abnormal airbag pressure, avoiding patient discomfort or complications due to excessively high or low airbag pressure, and improving the overall treatment experience for patients.

[0192] It should be noted that the above Figure 9 The execution principle of each step can be found in the description of any embodiment of the airbag leakage detection device 13 above, and will not be repeated here.

[0193] See Figure 10 As shown, a ninth aspect embodiment of this application provides a control device 19, including a memory 191 and a processor 192. The memory 191 stores a computer program, and when the processor 192 executes the computer program, it executes the airbag pressure control method or the airbag leakage judgment method of any of the above embodiments.

[0194] A ventilator system provided in the tenth aspect embodiment of this application includes:

[0195] Medical ventilation equipment includes a breathing tubing and a breathing module for providing mechanical ventilation to a patient. The breathing tubing provides a passage for the patient to inhale and exhale gases, and the breathing module is connected to the breathing tubing.

[0196] The pressure regulation module is used to inflate or deflate the cuff of the endotracheal tube to regulate the pressure of the cuff, wherein the endotracheal tube is connected to a medical ventilation device to deliver breathing gas to the patient's trachea.

[0197] The pressure monitoring module is used to measure the pressure of the airbag;

[0198] And the control device 19 of the ninth aspect embodiment of this application.

[0199] The implementation of each component can be referred to the relevant content of the ventilator system 10 in the fourth and sixth aspects mentioned above, and will not be described in detail here.

[0200] This application provides a computer-readable storage medium storing a computer program applied to an airbag pressure control device or an airbag leakage detection device. When the computer program is executed by a processor, it implements the airbag pressure control method or airbag leakage detection method of any of the above embodiments.

[0201] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. A processor of a computer device reads the computer program from the computer-readable storage medium and executes the computer program, causing the computer device to perform the airbag pressure control method or the airbag leakage detection method implementing any of the above embodiments.

[0202] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0203] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0204] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0205] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0206] It should also be understood that the various implementation methods provided in this application can be combined arbitrarily to achieve different technical effects.

[0207] The above provides a detailed description of the preferred embodiments of this application. However, this application is not limited to the above-described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An airbag pressure control device, characterized in that, include: A pressure regulation module is used to inflate or deflate the cuff of the endotracheal tube to regulate the pressure of the cuff, wherein the endotracheal tube is connected to a medical ventilation device to deliver breathing gases to the patient's trachea. A pressure monitoring module is used to measure the pressure of the airbag; A control module is used to control the pressure regulation module to adjust the airbag sequentially with different first pressures; The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage. The target pressure of the airbag is determined based on the changes in the at least two leakage rates, and the pressure regulating module is used to adjust the pressure of the airbag according to the target pressure.

2. The airbag pressure control device according to claim 1, characterized in that, The step of determining the target pressure of the airbag based on the changes in the at least two leakage rates, and controlling the pressure regulation module to adjust the pressure of the airbag according to the target pressure, includes: The control module is used to determine whether the airbag is leaking based on the changes in the at least two leakage rates. The control module is also used to increase the first pressure to obtain a target pressure after the airbag leaks, and control the pressure regulating module to adjust the pressure of the airbag according to the target pressure; The control module is also used to reduce the first pressure to obtain a target pressure after the airbag has stopped leaking, and to control the pressure regulating module to adjust the pressure of the airbag according to the target pressure.

3. The airbag pressure control device according to claim 2, characterized in that, The control module is used to determine whether the airbag is leaking based on the changes in the at least two leakage rates, including: The leakage amount corresponding to the current first pressure is compared with the leakage amount corresponding to the previous N first pressures to obtain the leakage change amount at the current first pressure. If the change in air leakage is greater than a first preset change threshold or exceeds the first preset change range, then it is determined that the airbag has leaked. If the change in air leakage is less than the first preset change threshold or falls within the first preset change range, then it is determined that the airbag has not leaked. Wherein, the current first pressure is greater than the previous N first pressures, where N is an integer greater than or equal to 1, and the change in air leakage is positively correlated with the degree of air leakage of the airbag.

4. The airbag pressure control device according to claim 2, characterized in that, The control module is further configured to, after the airbag leaks, increase the first pressure to obtain a target pressure, and, after controlling the pressure regulating module to adjust the pressure of the airbag according to the target pressure, continue to determine whether the airbag is leaking based on at least two new changes in leakage volume; and / or, The control module is also used to reduce the first pressure to obtain a target pressure after the airbag has no leakage, and after controlling the pressure regulating module to adjust the pressure of the airbag according to the target pressure, continue to determine whether the airbag has leaked based on at least two new changes in leakage.

5. The airbag pressure control device according to claim 1, characterized in that, The control module is used to determine the target pressure of the airbag based on the changes in the at least two leakage rates, including: The control module is used to compare the leakage change between at least two of the first pressures at different first pressures, determine at least one of the first pressures that satisfies a first condition, and determine the target pressure based on the at least one first pressure that satisfies the first condition; wherein, the first condition includes the leakage change being less than a first preset change threshold or within a first preset change range.

6. The airbag pressure control device according to claim 5, characterized in that, The control module determines the target pressure based on at least one first pressure satisfying a first condition, including: Among at least one first pressure that satisfies the first condition, the first pressure with the smallest leakage is determined as the target pressure; or... Among at least one first pressure that satisfies the first condition, the first pressure with the smallest change in leakage is determined as the target pressure; or... Among at least one first pressure that satisfies the first condition, the smallest first pressure is determined as the target pressure; or, Among at least one of the first pressures that satisfies the first condition, the first pressure at which the leakage change changes stably is determined as the target pressure; or... The average value of all or part of the first pressures that meet the first condition is determined as the target pressure; or... A pressure fine-tuning range is determined based on at least one of the first pressures that satisfy the first condition, and one of the pressures in the pressure fine-tuning range is determined as the target pressure.

7. The airbag pressure control device according to claim 1, characterized in that, The initial first pressure among the different first pressures is the airway peak pressure of the medical ventilation device; The control unit is further configured to increase the first pressure to update the first pressure, and control the pressure regulating module to adjust the pressure of the airbag according to the updated first pressure; and / or, The control unit is also configured to reduce the first pressure to update the first pressure, and control the pressure regulating module to adjust the pressure of the airbag according to the updated first pressure.

8. The airbag pressure control device according to claim 2 or 7, characterized in that, It also includes an alarm module; The control module is further configured to, after increasing the first pressure, if the first pressure is greater than or equal to the pressure adjustment upper limit, control the alarm module to sound an alarm; if the first pressure is less than the pressure adjustment upper limit, control the pressure adjustment module to adjust the pressure of the airbag according to the increased pressure; and / or, The control module is further configured to, after reducing the first pressure, control the alarm module to sound an alarm if the first pressure is less than or equal to the lower limit of pressure adjustment; and if the first pressure is greater than the lower limit of pressure adjustment, control the pressure adjustment module to adjust the pressure of the airbag according to the reduced pressure.

9. The airbag pressure control device according to claim 8, characterized in that, The control module is also used to control the pressure regulating module to maintain the pressure unchanged when the first pressure currently used by the pressure regulating module is greater than or equal to the upper limit of the pressure regulation, and to issue a first alarm prompt through the alarm module. The first alarm prompt indicates that the medical ventilation device has a leak of other types besides the airbag leak.

10. The airbag pressure control device according to claim 4 or 7, characterized in that, The control module increases the first pressure by: the control module increasing the first pressure by a step length, wherein the step length is a preset fixed step length, or, determining the number of consecutive increases of the current first pressure, and determining the size of the step length based on the number of consecutive increases, wherein the more consecutive increases, the smaller the step length; And / or, The control module reduces the first pressure by: the control module reducing the first pressure with a second step size, wherein the second step size is a preset fixed step size, or, determining the number of consecutive decreases in the current first pressure, and determining the size of the second step size based on the number of consecutive decreases, wherein the more consecutive decreases, the smaller the second step size.

11. The airbag pressure control device according to any one of claims 1 to 7 and 9, characterized in that, The control module is further configured to control the pressure regulation module to sequentially adjust the airbag with different first pressures, including: The control module is also used to determine whether the medical ventilation device meets the preset leakage standard based on the parameters of the medical ventilation device in the first operating state or the leakage amount of the medical ventilation device. If the air leakage exceeds the preset air leakage standard, the pressure adjustment module is controlled to adjust the airbag sequentially with different first pressures, wherein the first operating state is that the inhalation valve and the exhalation valve of the medical ventilation device are in the closed state.

12. The airbag pressure control device according to claim 11, characterized in that, The medical ventilation device includes a respiratory monitoring module, and the control module is used to acquire the patient's respiratory parameters through the respiratory monitoring module. The control module determines whether the medical ventilation device meets the preset leakage standard based on the parameters of the medical ventilation device in the first operating state, including: The control module is used to obtain the patient's airway pressure when the medical ventilation device is in the first operating state through the respiratory monitoring module, and to determine whether the medical ventilation device meets the preset leakage standard based on the comparison result of the airway pressure and the preset airway pressure threshold.

13. The airbag pressure control device according to claim 11, characterized in that, The medical ventilation device includes a respiratory monitoring module, and the control module is used to acquire the patient's respiratory parameters through the respiratory monitoring module. The control module determines whether the medical ventilation device meets the preset leakage standard based on the leakage amount of the medical ventilation device, including: The control module is used to acquire the patient's respiratory parameters through the respiratory monitoring module, and input the respiratory parameters into a leakage model for predictive processing to obtain the leakage flow rate per unit time. By accumulating the leakage flow rates over a preset time period, the leakage volume of the medical ventilation device within the preset time period is obtained. Based on the leakage volume, it is determined whether the medical ventilation device meets a preset leakage standard; or... The respiratory parameters include inspiratory tidal volume and expiratory tidal volume. The control module is used to obtain the leakage volume of one respiratory cycle based on the inspiratory tidal volume and the expiratory tidal volume, and to determine whether the medical ventilation device meets the preset leakage standard based on the leakage volume.

14. The airbag pressure control device according to claim 11, characterized in that, The respiratory monitoring module includes flow rate sensors respectively installed at the inspiratory and expiratory ends of the medical ventilation device; the control module is further configured to determine whether the medical ventilation device meets a preset leakage standard based on the leakage amount of the medical ventilation device, including: The control module is used to obtain a first flow rate parameter at the inspiratory end and a second flow rate parameter at the expiratory end through flow rate sensors at the inspiratory and expiratory ends of the medical ventilation device, and to obtain the leakage parameters of the medical ventilation device based on the second flow rate parameter and the first flow rate parameter. The leakage parameters include at least one of the following: the leakage amount per respiratory cycle, the leakage amount per minute, and the percentage of leakage per minute. The leakage parameters of the medical ventilation device are used to determine whether the medical ventilation device meets the preset leakage standard.

15. An airbag leakage detection device, characterized in that, include: A pressure regulation module is used to inflate or deflate the cuff of the endotracheal tube to regulate the pressure of the cuff, wherein the endotracheal tube is connected to a medical ventilation device to deliver breathing gases to the patient's trachea. A pressure monitoring module is used to measure the pressure of the airbag; A control module is used to control the pressure regulation module to adjust the airbag sequentially with different first pressures; The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage. Determine whether the airbag is leaking based on the changes in the at least two leakage rates.

16. A medical ventilation device, characterized in that, include: A breathing tubing, which is used to connect to an endotracheal tube and to provide a passage for the patient to inhale and exhale gases; A breathing module for providing mechanical ventilation to a patient, the breathing module being connected to the breathing tubing; The respiratory monitoring module is used to monitor the patient's respiratory parameters; A pressure regulation module is used to inflate or deflate the cuff of the endotracheal tube to regulate the pressure of the cuff, wherein the endotracheal tube is connected to a medical ventilation device to deliver breathing gases to the patient's trachea. A pressure monitoring module is used to measure the pressure of the airbag; A control module is used to control the pressure regulation module to adjust the airbag sequentially with different first pressures; The respiratory parameters are obtained under different first pressures, and the leakage of the medical ventilation device under the first pressure is determined based on the respiratory parameters, wherein one first pressure corresponds to one leakage. The target pressure of the airbag is determined based on the changes in the at least two leakage rates, and the pressure regulating module is used to adjust the pressure of the airbag according to the target pressure.

17. A medical ventilation device, characterized in that, include: A breathing tubing, which is used to connect to an endotracheal tube and to provide a passage for the patient to inhale and exhale gases; A breathing module for providing mechanical ventilation to a patient, the breathing module being connected to the breathing tubing; The respiratory monitoring module is used to monitor the patient's respiratory parameters; A control module is connected to an airbag pressure control device, which is used to control the pressure of the airbag placed in the patient's airway. The control module is used to control the airbag pressure control device to adjust the airbag sequentially with different first pressures; The respiratory parameters are obtained under different first pressures, and the leakage of the medical ventilation device under the first pressure is determined based on the respiratory parameters, wherein one first pressure corresponds to one leakage. Determine whether the airbag is leaking based on the changes in the at least two leakage rates.

18. A method for controlling airbag pressure, characterized in that, include: The control pressure regulation module sequentially adjusts the airbag with different initial pressures; The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage. The target pressure of the airbag is determined based on the changes in the at least two leakage rates, and the pressure of the airbag is adjusted by the pressure regulating module according to the target pressure.

19. A method for determining airbag leakage, characterized in that, include: The control pressure regulation module sequentially adjusts the airbag with different first pressures; The leakage of the medical ventilation device is determined under different first pressures, wherein each first pressure corresponds to one leakage. Determine whether the airbag is leaking based on the changes in the at least two leakage rates.

20. A control device, characterized in that, It includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program performing the airbag pressure control method of claim 18 or the airbag leakage detection method of claim 19.

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