Ventilator

Abstract

The present application relates to a ventilator, which includes an inhalation module, an exhalation module and a gas supply module. The inhalation module is used to transmit a respiratory medium; the exhalation module includes a negative pressure generator, which can generate negative pressure to assist exhalation; and the gas supply module is connected to the inhalation module to provide the inhalation module with a respiratory medium. The inhalation module can transmit the gas transmitted from the gas supply module to the user to provide the user with the respiratory medium required for breathing. The negative pressure generator included in the exhalation module can generate negative pressure when the gas flows through, so as to achieve the effect of assisting the user to exhale. As a result, the exhalation time is reduced, which facilitates the user's exhalation process to match high-frequency ventilation, thereby improving the effect of the ventilator when performing high-frequency ventilation.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a ventilator. Background Art

[0002] A ventilator is a medical device that can partially or completely replace the body's spontaneous ventilation. It is typically used in situations requiring assisted breathing, such as for patients with respiratory failure or during anesthesia and respiratory management during surgery. With the development of ventilators, high-frequency ventilators have gradually emerged. High-frequency ventilators use a frequency significantly higher than the physiological respiratory rate and extremely low tidal volumes for ventilation, making them suitable for ventilation of patients with open lung trauma and severe lung leaks.

[0003] However, current high-frequency ventilators do not have a good ventilation effect when achieving high-frequency ventilation. Summary of the Invention

[0004] Based on this, it is necessary to provide a ventilator for the problem of how to improve the ventilation effect of a high-frequency ventilator.

[0005] A ventilator, comprising:

[0006] an inhalation module, the inhalation module being used to deliver a breathing medium;

[0007] an exhalation module, the exhalation module comprising a negative pressure generator capable of generating negative pressure to assist exhalation;

[0008] A gas supply module is connected to the air inhalation module to provide a breathing medium to the air inhalation module.

[0009] In one embodiment, the negative pressure generator can generate negative pressure when gas flows through it, and the gas supply module is connected to the inhalation module and the exhalation module in parallel, and the gas supply module provides gas to the inhalation module and the exhalation module respectively to form a breathing cycle.

[0010] In one embodiment, the preset frequency of the breathing cycle formed by the gas supply module is higher than the normal physiological breathing frequency.

[0011] In one embodiment, the gas supply module includes a gas source module, a first gas tank, a pressure reducing valve and a second gas tank connected in series in sequence; the gas source module is used to provide gas to the first gas tank and the second gas tank; the first gas tank and the second gas tank are both used to store gas; the pressure reducing valve is used to reduce the pressure of the gas flowing to the second gas tank; the exhalation module is connected to the first gas tank, and the inhalation module is connected to the second gas tank.

[0012] In one embodiment, the air source module includes an air supply module, the air supply module includes a high-pressure air source and a first solenoid valve connected in sequence, the first solenoid valve is connected to the first gas tank, the first solenoid valve turns on and off the air supply module at the preset frequency, and the first gas tank provides gas to the exhalation module when the first solenoid valve is turned off;

[0013] The gas source module also includes an oxygen supply module, which includes a second solenoid valve of a high-pressure oxygen source connected in sequence. The second solenoid valve is connected to the second gas tank. The second solenoid valve and the first solenoid valve are synchronously connected and cut off the oxygen supply module at the preset frequency. The first gas tank provides gas to the exhalation module when the second solenoid valve is cut off.

[0014] In one embodiment, the inhalation module includes a first inhalation module, which includes a proportional valve. The proportional valve is used to adjust the flow and pressure of the breathing medium provided by the first inhalation module to the user. The proportional valve is synchronously turned on and off with the gas supply module at the preset frequency.

[0015] In one embodiment, the first inhalation module further includes a humidifier, which is connected to the proportional valve and is used to humidify the respiratory medium delivered by the first inhalation module.

[0016] In one embodiment, the inhalation module includes a second inhalation module arranged in parallel with the first inhalation module, and the second inhalation module includes an atomization solenoid valve and a nebulizer. The atomization solenoid valve is connected between the gas supply module and the nebulizer to connect or cut off the second inhalation module, and the nebulizer is used to add aerosol to the respiratory medium delivered by the second inhalation module.

[0017] In one embodiment, the exhalation module includes a third solenoid valve, which is connected between the gas supply module and the negative pressure generator. The on state and the off state of the third solenoid valve are opposite to and synchronized with the on state and the off state of the proportional valve.

[0018] In one embodiment, the exhalation module further includes an exhalation valve, which is connected between the negative pressure generator and the external environment. The exhalation valve is turned on and off at the preset frequency, and the on state and the off state of the exhalation valve are opposite to the on state and the off state of the proportional valve.

[0019] In the aforementioned ventilator, the inhalation module transfers gas from the gas supply module to the user, providing the breathing medium necessary for breathing. The exhalation module includes a negative pressure generator that creates negative pressure as gas flows through it, thereby assisting the user's exhalation. This reduces exhalation time, facilitating the user's exhalation process to match high-frequency ventilation, thereby enhancing the effectiveness of the ventilator's high-frequency ventilation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a module of a ventilator provided in one embodiment of the present application.

[0021] Figure 2 for Figure 1 Schematic diagram of the circuit of the ventilator shown.

[0022] Figure 3 for Figure 2 Schematic diagram of the circuit of the gas supply module in the ventilator shown.

[0023] Figure 4 for Figure 2 Schematic diagram of the circuit of the inspiratory module in the ventilator shown.

[0024] Figure 5 for Figure 2 Schematic diagram of the circuit of the expiratory module in the ventilator shown.

[0025] Figure 1: 10, ventilator; 100, inhalation module; 110, first inhalation module; 111, proportional valve; 112, second flow sensor; 113, emergency inhalation valve; 114, oxygen concentration sensor; 115, safety valve; 116, inhalation check valve; 117, humidifier; 118, water cup; 120, second inhalation module; 121, atomization solenoid valve; 122, atomizer; 200, exhalation module; 210, negative pressure generator; 220, third solenoid valve; 230, pressure regulating valve; 240, second pressure sensor; 250, voice coil motor; 260, steam trap; 270, third flow sensor; 300, gas supply module group; 310, gas source module; 3110, air supply module; 3111, air inlet; 3112, first solenoid valve; 3113, steam-water separator; 3114, air filter; 3115, air pressure sensor; 3116, air one-way valve; 3120, oxygen supply module; 3121, oxygen inlet; 3122, second solenoid valve; 3123, oxygen filter; 3124, oxygen pressure sensor; 3125, oxygen one-way valve; 320, first gas tank; 330, pressure reducing valve; 340, second gas tank; 350, first flow sensor; 360, first pressure sensor; 370, pressure relief valve; 400, connecting structure. DETAILED DESCRIPTION

[0026] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0029] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0032] The inventors of this application discovered that conventional ventilator ventilation methods involve using positive pressure to deliver gas to the user, allowing the patient to complete the inhalation process. During exhalation, the ventilator stops supplying gas to the user, causing the user's lungs to experience relatively high pressure. Consequently, due to the pressure differential, the lungs can contract to achieve exhalation. However, due to the high ventilation frequency during high-frequency ventilation, the automatic contraction and exhalation of the user's lungs during exhalation is difficult to match the higher ventilation frequency, resulting in poor high-frequency ventilation effectiveness.

[0033] In order to solve the above problems, the present application provides a ventilator, which includes an inhalation module, an exhalation module and a gas supply module. The gas supply module can provide gas to the inhalation module and the exhalation module respectively at a frequency higher than the normal breathing frequency. The exhalation module includes a negative pressure generator, which can form a negative pressure when the gas flows through. When the gas supply module provides gas to the inhalation module, the inhalation module can transfer the gas to the user to realize the inhalation process; when the gas supply module provides gas to the exhalation module, the negative pressure formed by the negative pressure generator can assist the user in exhaling, so that the patient's exhalation process can match the high-frequency ventilation. Since the formation of positive pressure and negative pressure at the user's place are directly related to the gas supply module, the degree of matching between the user's inhalation process and exhalation process and the high-frequency ventilation of the gas supply module can be improved, so as to improve the high-frequency ventilation effect. For the convenience of understanding and explanation, the ventilator provided by the present application is described in detail below in conjunction with the drawings and specific embodiments of the specification.

[0034] It should be noted that the inhalation and exhalation described in each embodiment are relative to the user. For example, inhalation refers to the user's inhalation, and does not limit the inhalation or exhalation of gas by the relevant components themselves. The same applies to exhalation. The high frequency described in each embodiment refers to a frequency higher than the normal physiological respiratory rate, which is 12 to 20 breaths per minute for an adult.

[0035] See Figure 1 One embodiment of the present application provides a ventilator, comprising an inhalation module 100, an exhalation module 200, and a gas supply module 300. The inhalation module 100 is configured to deliver a respiratory medium for a user to breathe. The exhalation module 200 includes a negative pressure generator 210, which is capable of generating negative pressure to assist exhalation. The gas supply module 300 is connected to the inhalation module 100 to provide the inhalation module 100 with a respiratory medium.

[0036] In the ventilator 10, the inhalation module 100 transmits gas from the gas supply module 300 to the user, providing the user with the necessary respiratory medium. The negative pressure generator 210 included in the exhalation module 200 creates a negative pressure when gas flows through it, thereby assisting the user in exhaling. This reduces exhalation time, facilitating the user's exhalation process to match high-frequency ventilation, thereby enhancing the effectiveness of high-frequency ventilation performed by the ventilator 10.

[0037] It should be noted that the negative pressure generated by the negative pressure generator 210 mentioned above means that the negative pressure generator 210 can relatively reduce the pressure at the user's end. Compared to the transmission technology that relies on the automatic retraction of the user's lungs to exhale, the gas supply module 300 combined with the negative pressure generator 210 in each embodiment can generate negative pressure at the user's end to actively guide the user's exhalation. This reduces the exhalation time, facilitating the user's exhalation process to match the high-frequency ventilation, thereby improving the effectiveness of the ventilator 10 when performing high-frequency ventilation.

[0038] That is to say, when the ventilation frequency of the gas supply module 300 is higher than the normal physiological breathing frequency, since the exhalation module 200 uses negative pressure to assist the user in exhaling, it can improve the matching degree between the user's exhalation process and high-frequency ventilation, thereby improving the effect of high-frequency ventilation.

[0039] See also Figure 1 and Figure 3In one embodiment, the ventilator 10 includes a connecting structure 400, which is used to connect to the user. The inhalation module 100 is connected to the connecting structure 400, and the inhalation module 100 is used to conduct the respiratory medium to the connecting structure 400 to ventilate the user through the connecting structure 400. The exhalation module 200 is also connected to the connecting structure 400, and the negative pressure generator 210 can form a negative pressure at the connecting structure 400 to assist the user in exhaling. Since the connecting structure 400 is connected to the user, the inhalation module 100 forms a positive pressure at the connecting structure 400, that is, a positive pressure is formed at the user end; similarly, the exhalation module 200 forms a negative pressure at the connecting structure 400, that is, a negative pressure is formed at the user end. For ease of understanding, the following description will be unified based on the user end.

[0040] When the ventilator 10 is a non-invasive ventilator 10, the connection structure 400 can be a mask, a nasal mask, etc. When the ventilator 10 is an invasive ventilator 10, the connection structure 400 can be a cannula or similar structure.

[0041] See also Figures 1 to 3 In one embodiment, the negative pressure generator 210 is capable of generating negative pressure when gas flows through it. The gas supply module 300 is connected in parallel to the inhalation module 100 and the exhalation module 200, and the gas supply module 300 provides gas to the inhalation module 100 and the exhalation module 200, respectively, to form a respiratory cycle. In other words, the inhalation module 100 generates positive pressure at the user's end, similar to the way the exhalation module 200 generates negative pressure at the user's end, both of which are generated by the gas from the gas supply module 300. This arrangement, on the one hand, the method for generating positive and negative pressure is the same, so there is no need to set up two different sets of devices to generate positive and negative pressure respectively, which can simplify the structure of the ventilator 10. On the other hand, the process of generating positive and negative pressure is directly related to the gas supply module 300, so high-frequency ventilation can be achieved by switching the gas circuit at high frequency. In other words, the method of implementing high-frequency ventilation in the ventilator 10 can be simplified.

[0042] For example, in one embodiment, the preset frequency for the gas supply module 300 to establish a respiratory cycle is higher than the normal physiological respiratory rate. In this case, the gas supply module 300 can generate positive and negative pressures at a high frequency and in an alternating manner at the user's end, thereby enhancing the effectiveness of high-frequency ventilation provided by the ventilator 10 to the user. It will be appreciated that an appropriate preset frequency can be set based on the user's specific circumstances to adjust the mean airway pressure within the ventilator's airway circuit. Mean airway pressure refers to the average pressure experienced by the lungs during a respiratory cycle.

[0043] Of course, the gas supply module 300 can also be set to ventilate the user at a frequency equal to or lower than the normal physiological breathing frequency. That is, the preset frequency can be set to be equal to or lower than the normal physiological breathing frequency.

[0044] In one embodiment, negative pressure generator 210 may be an ejector. An ejector, also known as an ejector, jet vacuum pump, or jet vacuum ejector, is a vacuum generator that uses fluid to transfer energy and mass. Of course, negative pressure generator 210 is not limited to an ejector. For example, negative pressure generator 210 may also be other components that utilize the Bernoulli principle to generate negative pressure.

[0045] Of course, in some embodiments, the negative pressure generator 210 can also utilize other devices capable of generating negative pressure to independently generate negative pressure. That is, the negative pressure generator 210 can independently generate negative pressure without being associated with the gas supply module 300. For ease of understanding, the following description will still use the example of the negative pressure generator 210 generating negative pressure under the action of gas provided by the gas supply module 300 as an example.

[0046] See also Figure 2 and Figure 3 In one embodiment, the gas supply module 300 includes a gas source module 310, a first gas tank 320, a pressure reducing valve 330, and a second gas tank 340, which are connected in series. Specifically, the pressure reducing valve 330 is disposed between the first gas tank 320 and the second gas tank 340. The gas source module 310 is configured to supply gas to the first gas tank 320 and the second gas tank 340. Both the first gas tank 320 and the second gas tank 340 are configured to store gas. The pressure reducing valve 330 is configured to reduce the pressure of the gas flowing to the second gas tank 340. The exhalation module 200 is connected to the first gas tank 320, and the inhalation module 100 is connected to the second gas tank 340. Thus, the pressure of the gas flowing from the first gas tank 320 to the second gas tank 340 can be reduced by the pressure reducing valve 330. It can be understood that flowing gas is needed to form negative pressure in the exhalation module 200, and the parameters such as the pressure and flow rate of the flowing gas are positively correlated with the negative pressure that can be obtained by the negative pressure generator 210. Therefore, the first gas tank 320 in the loop connection is set closer to the gas source module 310 than the second gas tank 340, and the exhalation module 200 is connected to the first gas tank 320, which can facilitate the exhalation module 200 to obtain an airflow with higher pressure and flow rate, thereby facilitating the formation of the required negative pressure.

[0047] The second gas tank 340 is connected to the air intake module 100. By setting a pressure reducing valve 330 on the first gas tank 320 and the second gas tank 340, the pressure of the gas flowing to the second gas tank 340 can be adjusted so that the pressure can be adjusted to a level suitable for human body acceptance, thereby improving the applicability of the air intake module 100.

[0048] In one embodiment, the gas source module 310 is turned on and off at a preset frequency. When the gas source module 310 is turned on and off, the first gas tank 320 can provide the exhalation module 200 with an air flow for obtaining a negative pressure.

[0049] In one embodiment, since the gas source module 310 delivers high-pressure gas, the high-pressure gas tends to reach a relatively high temperature during its flow. In various embodiments, by providing a first gas tank 320 and a second gas tank 340 connected between the air intake module 100 and the gas source module 310, a buffering effect can be achieved, ensuring that the gas provided by the air intake module 100 to the user is at an appropriate temperature.

[0050] See also Figure 3 In one embodiment, the gas source module 310 includes an air supply module 3110 and an oxygen supply module 3120, which mix air and oxygen to form a breathing medium for the user to breathe. The air supply module 3110 and the oxygen supply module 3120 are connected in parallel to the first gas tank 320.

[0051] The air supply module 3110 includes a high-pressure air source and a first solenoid valve 3112, which are connected in sequence. The first solenoid valve 3112 is connected to the first gas tank 320. The first solenoid valve 3112 periodically opens and closes the air supply module 3110 at a preset frequency, thereby forming a high-frequency ventilation frequency for the ventilator 10. When the first solenoid valve 3112 is closed, the first gas tank 320 provides gas to the exhalation module 200, enabling the negative pressure generator 210 to generate a negative pressure at the user end to assist exhalation. The high-pressure air source can specifically be connected to other components of the air supply module 3110 via the air inlet 3111.

[0052] The gas source module 310 includes an oxygen supply module 3120, which includes a high-pressure oxygen source and a second solenoid valve 3122, which are connected in sequence. The second solenoid valve 3122 is connected to the second gas tank 340. The second solenoid valve 3122 periodically opens and closes the oxygen supply module 3120 in synchronization with the first solenoid valve 3112 at a preset frequency, thereby generating a high-frequency ventilation frequency for the ventilator 10. The first gas tank 320 provides gas to the exhalation module 200 when the second solenoid valve 3122 is closed. The high-pressure oxygen source can be connected to other components of the oxygen supply module 3120 via an oxygen inlet 3121.

[0053] It is understood that the first solenoid valve 3112 and the second solenoid valve 3122 are synchronously turned on or off at a preset frequency, causing the entire gas source module 310 to be periodically turned on or off. The first solenoid valve 3112 and the second solenoid valve 3122 are synchronously turned on or off, causing the entire gas source module 310 to be turned on or off. When the gas source module 310 is turned off, since gas still remains in the first gas tank 320, gas can be supplied to the negative pressure generator 210 through the first gas tank 320, thereby forming a negative pressure at the user's end to assist exhalation.

[0054] In one embodiment, the high-pressure air source and the high-pressure oxygen source can be an exhaust fan or a high-pressure gas container. By providing the first gas tank 320 and the second gas tank 340 connected between the air inhalation module 100 and the gas source module 310, the air and oxygen can be fully mixed to form the desired breathing medium.

[0055] See also Figure 3 In one embodiment, the air supply module 3110 further includes a water separator 3113, an air filter 3114, an air pressure sensor 3115, and an air check valve 3116. The water separator 3113, the air filter 3114, the air pressure sensor 3115, and the air check valve 3116 are sequentially connected between the air inlet 3111 and the first solenoid valve 3112. The water separator 3113 facilitates controlling the water content in the breathing medium. The air filter 3114 filters impurities and harmful substances from the air. The air pressure sensor 3115 facilitates measuring the gas pressure in the air supply module 3110. The air check valve 3116 prevents air from flowing back into the air supply module 3110 from the inhalation module 100 and the exhalation module 200.

[0056] Similarly, in one embodiment, the oxygen supply module 3120 further includes an oxygen filter 3123, an oxygen pressure sensor 3124, and an oxygen check valve 3125. The oxygen filter 3123, oxygen pressure sensor 3124, and oxygen check valve 3125 are sequentially connected between the oxygen inlet 3121 and the second solenoid valve 3122. The oxygen filter 3123 can filter impurities and harmful substances from the oxygen. The oxygen pressure sensor 3124 can facilitate measurement of the gas pressure in the oxygen supply module. The oxygen check valve 3125 can prevent oxygen backflow.

[0057] Please continue reading Figure 3 In one embodiment, the gas supply module 300 further includes a first flow sensor 350 and a first pressure sensor 360. The first flow sensor 350 and the first pressure sensor 360 are connected between the gas source module 310 and the first gas tank 320, and are located in the circuit formed by the parallel connection of the air supply module 3110 and the oxygen supply module 3120. The first flow sensor 350 is used to detect the flow rate of the mixed gas of air and oxygen, and the first pressure sensor 360 is used to detect the pressure of the mixed gas of air and oxygen.

[0058] In one embodiment, the gas supply module 300 further includes a pressure relief valve 370, which is connected between the first gas tank 320 and the external environment to be opened when the pressure in the first gas tank 320 is higher than a threshold value. It is understood that the first gas tank 320 stores high-pressure gas to provide gas to the exhalation module 200 when the gas source module 310 is cut off. Moreover, since the first gas tank 320 is arranged between the gas source module 310 and the inhalation module 100, when the gas source module 310 is turned on, the gas source module 310 can replenish the gas in the first gas tank 320. By providing the pressure relief valve 370, it can be opened when the pressure in the first gas tank 320 is higher than a threshold value to release the pressure to the external environment, thereby facilitating the control of the gas pressure in the first gas tank 320 within a desired range.

[0059] See also Figure 4 In one embodiment, the inhalation module 100 includes a first inhalation module 110, which includes a proportional valve 111. Proportional valve 111 is used to adjust the flow and pressure of the breathing medium provided to the user by the first inhalation module 110. Proportional valve 111 is synchronized with gas supply module 300 to be switched on and off at a preset frequency. That is, proportional valve 111 and gas supply module 300 maintain the same on and off states at all times. Proportional valve 111 adjusts the flow of the breathing medium to ensure that the breathing medium is suitable for the user's breathing.

[0060] In one embodiment, the first inhalation module 110 further includes a second flow sensor 112 connected to the proportional valve 111. The second flow sensor 112 can be used to easily obtain the flow of the respiratory medium in the inhalation module 100, thereby facilitating feedback adjustment of the gas flow in the inhalation module 100.

[0061] Please continue reading Figure 4 In one embodiment, the first inhalation module 110 includes a humidifier 117, which is connected to the proportional valve 111. The humidifier 117 is used to humidify the respiratory medium delivered by the first inhalation module 110 to reduce the probability of sputum crusting during use of the ventilator 10 by the user, thereby reducing the risk of using the ventilator 10. The humidifier 117 can be specifically connected between the proportional valve 111 and the connection structure 400.

[0062] In one embodiment, the first inhalation module 110 further includes a water collection cup 118 for collecting excess water that is condensed when the atomized or humidified gas enters the connection structure 400 of the ventilator 10 .

[0063] In one embodiment, the first air inhalation module 110 further includes an emergency inhalation valve 113, an oxygen concentration sensor 114, and a safety valve 115. The emergency inhalation valve 113 can open and communicate with the external environment when the main unit malfunctions and cannot provide gas, allowing the user to inhale air from the external environment through the emergency inhalation valve 113. The oxygen concentration sensor 114 is used to measure the oxygen concentration of the gas supplied to the user so as to adjust the flow rate of oxygen provided by the oxygen supply module 3120 according to demand. The safety valve 115 can open to relieve pressure when the pressure in the air inhalation module 100 exceeds a threshold.

[0064] In one embodiment, the inhalation module 100 further includes an inhalation check valve 116, which allows gas within the inhalation module 100 to flow toward the connection structure 400 and blocks gas from the connection structure 400 from flowing within the inhalation module 100, thereby facilitating gas outflow from the exhalation module 200. A humidifier 117 and a water storage cup 118 are disposed between the inhalation check valve 116 and the connection structure 400. The emergency inhalation valve 113, oxygen concentration sensor 114, and safety valve 115 are disposed between the proportional valve 111 and the inhalation check valve 116.

[0065] Please continue reading Figure 4 In one embodiment, the air intake module 100 includes a second air intake module 120 arranged in parallel with the first air intake module 110. Since the first air intake module 110 and the second air intake module 120 are arranged in parallel, the interruption of the second air intake module 120 will not affect the air intake in the first air intake module 110.

[0066] The second inhalation module 120 includes an atomizing solenoid valve 121 and a nebulizer 122. The atomizing solenoid valve 121 is connected between the gas supply module 300 and the nebulizer 122, enabling or disabling the second inhalation module 120. The nebulizer 122 is used to add aerosol to the respiratory medium delivered by the second inhalation module 120. It will be appreciated that during patient treatment, medications can be atomized into aerosols for inhalation by the patient. Therefore, the provision of the nebulizer 122 facilitates the addition of aerosols to the respiratory medium. Of course, when aerosolized medication is not required, the atomizing solenoid valve 121 can be controlled to be disconnected.

[0067] See also Figure 5In one embodiment, the exhalation module 200 includes a third solenoid valve 220 connected between the gas supply module 300 and the negative pressure generator 210. The on and off states of the third solenoid valve 220 are opposite and synchronized with the on and off states of the proportional valve 111. That is, the third solenoid valve 220 and the proportional valve 111 are switched on and off synchronously at a preset frequency. For example, during inhalation, the gas source module 310 and the proportional valve 111 are switched on, while the third solenoid valve 220 is switched off. As a result, the gas provided by the gas supply module 300 flows to the inhalation module 100. During exhalation, the gas source module 310 and the proportional valve 111 are switched off, while the third solenoid valve 220 is switched on. Gas provided by the gas supply module 300 flows to the exhalation module 200, creating a negative pressure at the user's end, thereby increasing the user's exhalation rate and improving the matching of the user's breathing with high-frequency ventilation.

[0068] See also Figure 5 In one embodiment, the exhalation module 200 further includes a pressure regulating valve 230 connected between the gas supply module 300 and the third solenoid valve 220 to regulate the pressure of the gas provided by the gas supply module 300 to the negative pressure generator 210. It will be appreciated that since the negative pressure generator 210 generates negative pressure through the gas provided by the gas supply module 300, the magnitude of the negative pressure generated by the negative pressure generator 210 can be adjusted by adjusting the pressure of the cap gas, thereby adjusting the degree of exhalation assistance provided by the exhalation module 200 according to actual conditions.

[0069] Please continue reading Figure 5 In one embodiment, the exhalation module 200 further includes a second pressure sensor 240 , which is connected between the negative pressure generator 210 and the connection structure 400 , and is used to measure the pressure of the gas at the exhalation end of the connection structure 400 , providing a reference for adjusting the auxiliary effect of the negative pressure generator 210 .

[0070] See also Figure 5 In one embodiment, the exhalation module 200 further includes an exhalation valve connected between the negative pressure generator 210 and the external environment. The on and off states of the exhalation valve are opposite to those of the proportional valve 111. Specifically, the exhalation valve and the third solenoid valve 220 are synchronized at a preset frequency to open and close the valve. The exhalation valve and the third solenoid valve 220 work together to control the flow and shutoff of air during exhalation.

[0071] In one embodiment, the exhalation module 200 includes a voice coil motor 250 , which controls the high-frequency conduction and cutoff of the exhalation valve.

[0072] In one embodiment, the exhalation module 200 further includes a drain valve 260 , which is disposed between the voice coil motor 250 and the external environment. The drain valve 260 is used to guide liquids such as condensed water in the circuit where the exhalation module 200 is located out of the circuit.

[0073] In one embodiment, the exhalation module 200 further includes a third flow sensor 270 . The third flow sensor 270 is disposed between the steam trap 260 and the voice coil motor 250 and is used to measure the pressure of the exhaled gas.

[0074] For ease of understanding, the breathing process of the ventilator 10 is briefly described below.

[0075] During inhalation, both the first and second solenoid valves 3112 and 3122 are open, while the third solenoid valve 220 is closed. The gas supply module 300 supplies gas to the first inhalation module 110, generating positive pressure at the connection structure 400 for the user to inhale. When the user needs to ingest aerosolized medication, they can open the atomization solenoid valve 121 to add aerosolized medication to the breathing medium through the second inhalation module 120.

[0076] During exhalation, the first and second solenoid valves 3112 and 3122 are both closed, and the third solenoid valve 220 is open. The first gas tank 320 provides gas to the exhalation module 200, which generates negative pressure when flowing through the negative pressure generator 210 to assist the user in exhaling.

[0077] The ventilator 10 takes the above steps as a cycle and repeats the cycle at a preset frequency to achieve high-frequency ventilation.

[0078] It should be noted that, in some embodiments, the first gas tank 320 and the second gas tank 340 may not be provided. In this case, the gas source module 310 can continuously provide gas, and the flow direction of the gas provided by the gas source module 310 can be controlled by controlling the opening and closing states of the proportional valve 111 and the third solenoid valve 220. For example, during the inhalation process, the proportional valve 111 is opened and the third solenoid valve 220 is closed, so that the gas provided by the gas source module 310 flows into the inhalation module 100 to facilitate the user's inhalation; during the exhalation process, the proportional valve 111 is closed and the third solenoid valve 220 is opened, so that the gas provided by the gas source module 310 flows into the exhalation module 200, and a negative pressure is obtained at the user end through the negative pressure generator 210, and the negative pressure assists the user in exhaling.

[0079] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A ventilator, characterized in that: The ventilator comprises: an inhalation module, the inhalation module being used to deliver a breathing medium; an exhalation module, the exhalation module comprising a negative pressure generator, the negative pressure generator being capable of generating negative pressure to assist exhalation, the negative pressure generator being capable of generating negative pressure when gas flows through the negative pressure generator; a gas supply module, the gas supply module being connected to the inhalation module to provide a breathing medium to the inhalation module, the gas supply module being connected in parallel to the inhalation module and the exhalation module, the gas supply module providing gas to the inhalation module and the exhalation module respectively to form a breathing cycle of a preset frequency; The gas supply module includes a gas source module, a first gas tank, a pressure reducing valve and a second gas tank connected in series in sequence; the gas source module is used to provide gas to the first gas tank and the second gas tank; the first gas tank and the second gas tank are both used to store gas; the pressure reducing valve is used to reduce the pressure of the gas flowing to the second gas tank; the exhalation module is connected to the first gas tank, and the inhalation module is connected to the second gas tank; the gas source module includes an air supply module, the air supply module includes a high-pressure air source and a first solenoid valve connected in sequence, the first solenoid valve is connected to the first gas tank, the first solenoid valve turns on and off the air supply module at the preset frequency, and the first gas tank supplies gas to the exhalation module when the first solenoid valve is turned off; the gas source module also includes an oxygen supply module, the oxygen supply module includes a high-pressure oxygen source and a second solenoid valve connected in sequence, the second solenoid valve is connected to the second gas tank, the second solenoid valve and the first solenoid valve synchronously turn on and off the oxygen supply module at the preset frequency, and the first gas tank supplies gas to the exhalation module when the second solenoid valve is turned off.

2. The ventilator according to claim 1, wherein: The preset frequency of the breathing cycle formed by the gas supply module is higher than the normal physiological breathing frequency.

3. The ventilator according to claim 2, characterized in that The inhalation module includes a first inhalation module, which includes a proportional valve. The proportional valve is used to adjust the flow and pressure of the breathing medium provided by the first inhalation module to the user. The proportional valve is synchronously turned on and off with the gas supply module at the preset frequency.

4. The ventilator according to claim 3, characterized in that The first inhalation module further includes a humidifier connected to the proportional valve, and the humidifier is used to humidify the respiratory medium delivered by the first inhalation module.

5. The ventilator according to claim 3, characterized in that The inhalation module includes a second inhalation module arranged in parallel with the first inhalation module, and the second inhalation module includes an atomization solenoid valve and a nebulizer. The atomization solenoid valve is connected between the gas supply module and the nebulizer to connect or cut off the second inhalation module. The nebulizer is used to add aerosol to the respiratory medium delivered by the second inhalation module.

6. The ventilator according to claim 3, characterized in that The exhalation module includes a third solenoid valve, which is connected between the gas supply module and the negative pressure generator. The on state and the off state of the third solenoid valve are opposite to and synchronized with the on state and the off state of the proportional valve.

7. The ventilator according to claim 6, characterized in that The exhalation module further includes a pressure regulating valve connected between the gas supply module and the third solenoid valve.

8. The ventilator according to claim 3, characterized in that The exhalation module also includes an exhalation valve, which is connected between the negative pressure generator and the external environment. The exhalation valve is turned on and off at the preset frequency, and the on state and the off state of the exhalation valve are opposite to the on state and the off state of the proportional valve.

9. The ventilator according to claim 1, characterized in that The negative pressure generator is configured as an ejector.

10. The ventilator according to claim 1, characterized in that The gas supply module further includes a pressure relief valve connected between the first gas tank and the external environment.

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