Expiratory valve and breathing machine

Abstract

The embodiment of the utility model provides an exhalation valve and a breathing machine, and relates to the technical field of medical equipment.The exhalation valve comprises an air inlet valve port, an air path pipeline and an air outlet valve port which penetrate through a main machine and are sequentially connected, and when exhaled air enters the air inlet valve port, is conveyed to the air path pipeline and then enters the air outlet valve port, the air path pipeline is communicated with the air outlet valve port; exhaled gas is completely not in contact with the main machine, namely, the exhaled gas cannot pollute the main machine. When disinfection is needed, only the exhalation valve needs to be detached from the main machine and disinfected, disinfection of all parts making contact with exhaled air can be achieved, and thorough disinfection of the breathing machine is completed.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more particularly to an exhalation valve and a ventilator. Background Technology

[0002] A ventilator is a medical device that artificially replaces spontaneous ventilation. It is widely used for respiratory failure due to various causes, respiratory management during major surgery under anesthesia, respiratory support therapy, and emergency resuscitation. A ventilator typically has two tubing: one tubing delivers a mixture of oxygen and gas to the patient via a pump; the other tubing expels the patient's exhaled air to the outside. This latter tubing is usually implemented using an expiratory valve, which is detachably mounted on the ventilator's main unit. After use, the expiratory valve can be removed from the main unit and sterilized through high-temperature treatment or immersion to ensure that the valve expelling the patient's exhaled air is free of viruses, bacteria, or other contaminants, preventing cross-infection between patients.

[0003] In related technologies, there is a connection between the exhaust pipe of the exhalation valve and the main unit. In other words, the exhaust pipe is a combination of the exhaust pipe part on the exhalation valve and the exhaust pipe part on the main unit. This means that the exhaust pipe part on the main unit has not been disinfected, which can easily lead to cross-infection among patients.

[0004] Therefore, there is an urgent need to redesign an exhalation valve and ventilator, and to overcome the aforementioned defects. Summary of the Invention

[0005] This application provides an exhalation valve and a ventilator that can thoroughly disinfect the ventilator and ensure that there is no cross-infection between patients.

[0006] In a first aspect, embodiments of this application provide an exhalation valve, which is detachably installed on the main unit of a ventilator. The exhalation valve includes an inlet valve port, an air passage pipe, and an exhaust valve port that are sequentially connected through the main unit, so that the exhaled gas does not come into contact with the main unit during the exhaust process.

[0007] The exhaust valve port is optionally equipped with a one-way valve to prevent gas backflow. The intake valve port is positioned facing the bottom of the main unit and forms a set angle with the side wall of the main unit, the set angle being less than 90°.

[0008] Optionally, it also includes an airtightness detection component connected to the exhalation valve, wherein the airtightness detection component and the main unit are configured to be non-contact.

[0009] Optionally, the gas path pipeline comprises a first end communicating with the air inlet valve port, a second end communicating with the air outlet valve port, a third end provided with a valve plate driven by a driving member to communicate or close the gas path between the air outlet valve port and the air inlet valve port.

[0010] Optionally, the third end of the gas path pipeline is sealedly connected with a sealing film.

[0011] Optionally, the gas path pipeline further comprises a knob sleeved between the gas path pipeline and the air inlet valve port, the knob is rotated clockwise or counterclockwise by a preset angle to fasten the air outlet valve with a mounting seat in the host, and the preset angle is less than or equal to 45°.

[0012] Optionally, the gas path pipeline is provided with a flow detection module, the flow detection module obtains a pressure difference of the exhaled gas flowing through the airflow detection metal film by the airflow detection metal film arranged in the gas path pipeline.

[0013] Optionally, the air outlet valve port is provided with a one-way valve to prevent backflow of the gas.

[0014] Optionally, the air tightness detection assembly is arranged on the side of the air inlet valve port of the gas path pipeline, and the air tightness detection assembly and the air inlet valve port are arranged in a Y shape.

[0015] In a second aspect, the embodiments of the present application provide a breathing machine, the breathing machine comprising the air outlet valve according to any one of the first aspect.

[0016] The present application has the following beneficial effects:

[0017] The air outlet valve provided by the embodiments of the present application comprises an air inlet valve port, a gas path pipeline and an air outlet valve port connected in sequence and arranged through the host, so that the exhaled gas is completely free of contact with the host when the exhaled gas enters the air inlet valve port, is transmitted to the gas path pipeline, and then enters the air outlet valve port, that is, the exhaled gas does not pollute the host. When disinfection is needed, the air outlet valve is only needed to be disassembled from the host, and the air outlet valve is disinfected, so that all components contacted with the exhaled gas are disinfected, and complete disinfection of the breathing machine is achieved.

[0018] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and achieved by the structure particularly pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the accompanying drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the accompanying drawings in the following description only need to be drawn for the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0020] Figure 1 A related technical ventilator principle simplification schematic diagram provided for the embodiments of the present application;

[0021] Figure 2 A structure schematic diagram of an exhalation valve provided for the embodiments of the present application;

[0022] Figure 3 Four surface schematic diagrams of a breathing valve provided for the embodiments of the present application;

[0023] Figure 4 A top view (a) and a bottom view (b) of a breathing valve provided for the embodiments of the present application;

[0024] Figure 5 A brief schematic diagram of an exhalation valve installed in a main machine provided for the embodiments of the present application;

[0025] Figure 6 A related technical ventilator structure schematic diagram provided for the embodiments of the present application;

[0026] Figure 7 A sectional view of an exhalation valve provided for the embodiments of the present application;

[0027] Figure 8 A structure schematic diagram of an exhalation valve provided for the embodiments of the present application;

[0028] Figure 9 A structure schematic diagram of an exhalation valve provided for the embodiments of the present application;

[0029] Figure 10 A structure schematic diagram of an exhalation valve provided for the embodiments of the present application;

[0030] Figure 11 A structure schematic diagram of an exhalation valve base provided for the embodiments of the present application;

[0031] Figure 12 A part of the appearance diagram of a ventilator provided for the embodiments of the present application;

[0032] Figure 13 A structure schematic diagram of a ventilator provided for the embodiments of the present application;

[0033] The air inlet valve port 1, the air tightness detection assembly 2, the knob 3, the guide strip 3-1, the rotating knob 3-2, the air path pipeline 4, the internal pipeline 4-1, the sampling plug 5, the air flow detection metal diaphragm 5-1, the air outlet valve port 6, the shell 7, the driving piece 8, the sealing diaphragm 8-1, the valve piece 8-2, the mounting seat 9, and the clamping groove 9-1. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. The embodiments in the present application and the features in the embodiments can be combined with each other in a non-conflicting manner.

[0035] It should be noted that the "connection" in the embodiments of the present application can be understood as a direct connection or an indirect connection between two components. For example, A is connected with B, which can be that A is directly connected with B, or A is indirectly connected with B through one or more other components. For example, A is connected with B, which can also be that A is directly connected with C, C is directly connected with B, and A is connected with B through C.

[0036] In order to facilitate the understanding of the technical solutions provided by the embodiments of the present application, some key terms used in the embodiments of the present application are explained first:

[0037] Exhalation valve, a device for controlling and regulating the exhalation of gas. Valve port, the outlet or inlet part of the valve, in general, the valve port of the valve is designed to control the flow of fluid.

[0038] Check valve, fluid can only flow along the water inlet, the water outlet medium cannot backflow, commonly known as check valve. Check valve is also called non-return valve or back check valve. It is used in hydraulic systems to prevent oil from flowing in the opposite direction, or in pneumatic systems to prevent gas from flowing in the opposite direction.

[0039] Voice coil motor, a special form of direct drive motor. It has the characteristics of simple structure, small size, high speed, high acceleration, fast response, etc. Its working principle is that the energized coil (conductor) placed in the magnetic field will generate a force, and the force is proportional to the current applied to the coil. Voice coil motors manufactured based on this principle can move in a straight line or in a circular arc.

[0040] The design idea of the embodiments of the present application is briefly introduced as follows:

[0041] At present, in the related art, the principle of a breathing machine is simplified as shown in Figure 1As shown, the ventilator comprises two pipelines, one pipeline comprises an inhalation valve for delivering air or a mixture of oxygen and air to the patient when the patient inhales under the control of the controller, and the other pipeline comprises an exhalation valve for transmitting the exhaled gas of the patient to the outside when the patient exhales under the control of the controller, so that the patient can breathe relying on the ventilator. Wherein, the exhalation valve is detachably arranged on the main machine of the ventilator, and the exhaled gas transmitted by the exhalation valve flows through the main machine, the exhaled gas contacts the main machine, the main machine cannot be sterilized, which leads to incomplete sterilization of the ventilator, and easily causes cross infection between patients.

[0042] In view of this, the exhalation valve provided by the embodiments of the present application is detachably mounted on the main machine of the ventilator, and the exhalation valve comprises an air inlet valve port, an air path pipeline and an air outlet valve port connected in sequence and arranged through the main machine. That is, after the patient exhales, the exhaled gas flows through the air inlet valve port to the air path pipeline, and then flows to the air outlet valve port through the air path pipeline and is discharged to the outside. In the whole process of the flow of the exhaled gas, the exhaled gas does not contact the main machine of the ventilator, and therefore does not pollute the main machine. Therefore, sterilization of the exhalation valve can achieve complete sterilization of the ventilator.

[0043] Referring to Figure 2 As shown in the structural diagram of the exhalation valve provided by the embodiments of the present application, the exhalation valve is detachably mounted on the main machine of the ventilator, and the exhalation valve comprises an air inlet valve port 1, an air path pipeline 4 and an air outlet valve port 6 connected in sequence and arranged through the main machine, so that the exhaled gas does not contact the main machine during the discharge process.

[0044] In one embodiment, as Figure 2 As shown, the exhaled gas enters the air path pipeline 4 of the exhalation valve from the air inlet valve port 1, and then flows through the air outlet valve port 6 and is discharged to the outside. In this process, the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6 are sealingly connected with each other, and the exhaled gas flows in the pipeline formed by the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6. Therefore, the optimized air path formed by the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6 will not pollute the main machine outside the exhalation valve. Sterilization of the exhalation valve (such as immersion sterilization or high-temperature sterilization, such as high-temperature condition can be 134℃ high-temperature cooking) can achieve complete sterilization of the ventilator, and effectively prevent cross infection between patients.

[0045] In an embodiment, only the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6 can be arranged in the exhalation valve to form a pipeline for the exhaled gas to flow, or the air path pipeline 4 can also be sealed and assembled by a plurality of sub-air path pipelines, or the air inlet valve port 1 and the air outlet valve port 6 can also be sealed and combined by a plurality of valve port subassemblies, or the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6 are integrally formed. The specific design form of the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6 in the exhalation valve is not limited here and can be set as needed.

[0046] In an embodiment, the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6 connected in sequence in the exhalation valve pass through the host machine, and correspondingly, the air path formed by the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6 connected in sequence passes through the host machine. Here, the exhalation valve can pass through the host machine in a penetrating manner or in an inlaid manner. When the exhalation valve is installed in the host machine, the air path is inlaid in the host machine to pass through the host machine. The manner in which the air path formed by the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6 connected in sequence passes through the host machine is not limited here and can be set as needed.

[0047] In an embodiment, the exhalation valve can be provided with a mounting bracket device and can be detachably installed in the host machine. The mounting bracket device can be adaptively arranged according to the internal components of the breathing machine, wherein the air inlet valve port 1, the air path pipeline 4 and the air outlet valve port 6 connected in sequence pass through the host machine. The exhalation valve can be connected to the necessary devices such as the controller of the host machine and other related devices, and the exhaled gas does not come into contact with the host machine.

[0048] In an embodiment, as shown in Figure 3 , four surface views of a breathing valve provided by the embodiment of the present application are shown, including a front view (a), a rear view (b), a left view (c) and a right view (d). As shown in Figure 4 , a top view (a) and a bottom view (b) of a breathing valve provided by the embodiment of the present application are shown.

[0049] Based on the breathing valve shown in Figures 2-4 , the embodiment of the present application provides an air outlet valve port, wherein the air outlet valve port 6 is a one-way valve for preventing backflow of gas. In this way, the backflow of external gas into the air outlet valve port can be prevented, thereby affecting the breathing of the patient.

[0050] In an embodiment, a shell 7 can be arranged on the air outlet valve port 6. The shell 7 can be used to shield external dust, and when the exhalation valve is installed in the host machine, the outer surface (the shell 7) of the exhalation valve is smoothly connected to the outer surface of the host machine, so that the appearance of the breathing machine is beautiful when the exhalation valve is installed on the host machine.

[0051] Based on the breathing valve shown in Figures 2-4As shown in the breathing valve in the middle, the air inlet valve port 1 provided in the embodiment of the present application is arranged towards the bottom of the host and forms a set angle with the sidewall of the host, and the set angle is less than 90°.

[0052] In an embodiment, the set angle formed between the air inlet valve port 1 and the sidewall of the host can be 30°-85°, or 45°-75°.

[0053] In an embodiment, as shown in the diagram, Figure 5 a simplified diagram of the exhalation valve provided in the embodiment of the present application is installed in the host, and the black box in the diagram is only used to show a possible positional relationship between the host and the exhalation valve, so as to clearly illustrate the angle relationship of the set angle between the air inlet valve port 1 and the sidewall of the host, and does not limit the specific positional relationship between the host and the exhalation valve, the size of the host, the shape of the host, and the like.

[0054] Among them, the air inlet valve port 1 is connected to the patient through the docking pipeline to obtain the exhaled gas of the patient, and the exhaled gas carries water vapor. In the related art, the air inlet valve port and the sidewall of the host form a 90° angle, and the exhaled gas will condense water when passing through the docking pipeline connected to the air inlet valve port. The condensed water will enter the air inlet valve port. The exhalation valve has a flow detection module for detecting the flow of exhaled gas. If the flow detection module contacts water, it will cause inaccurate detection results. The structure of the air inlet valve 1 in Figure 5 the air inlet valve 1 in the embodiment of the present application can prevent the condensed water from flowing back to the air inlet valve port 1 through the docking pipeline, so as not to affect the flow detection module and ensure that the flow detection module obtains accurate detection results.

[0055] Based on any one of the exhalation valves in the above Figures 2-5 the embodiment of the present application provides an exhalation valve, which further comprises a gas-tightness detection assembly 2 detachably arranged on the exhalation valve, and the gas-tightness detection assembly 2 is arranged in a non-contact manner with the host.

[0056] In an embodiment, the gas-tightness detection assembly can also be referred to as a gas-tightness detection plug, which is used to detect the gas-tightness of the breathing circuit.

[0057] In an embodiment, the gas-tightness detection assembly 2 can be led out from the gas pipeline 4 and arranged in a non-contact manner with the host.

[0058] Among them, in the related art, the gas-tightness detection assembly is usually arranged on the host, as Figure 6The diagram shown is a schematic representation of a ventilator structure according to an embodiment of this application. It illustrates the positions of the expiratory valve 601, inspiratory valve 602, and airtightness detection component 604 on the main unit 603. It can be seen that the airtightness detection component 604 is independent of the expiratory valve 601 and is located on the main unit 603. This means that the main unit 603 needs a conduit to connect the airtightness detection component 604 to the exhaled gas conduit in the expiratory valve 601, allowing the airtightness detection component 604 to perform airtightness detection on the expiratory valve 601. However, this design may lead to contamination of the airtightness detection component 604 and the conduit connected to it in the main unit 603, making disinfection impossible. Even if disinfection is possible, it can only be done by wiping with alcohol, which is inconvenient and incomplete. In contrast, this application places the airtightness detection component on the expiratory valve, as... Figure 2 As shown, the airtightness detection component is set up in a non-contact manner with the main unit, so the airtightness detection component can be disinfected together with the exhalation valve to achieve thorough disinfection of the ventilator and prevent cross-infection between patients.

[0059] Based on the above Figures 2-5 In any of the exhalation valves, this application embodiment provides an airtightness detection component 2, which is disposed on the side of the air inlet valve 1 of the air passage 4, and the airtightness detection component 2 and the air inlet valve 1 are arranged in a Y shape.

[0060] Based on the above Figures 2-5 In any of the exhalation valves, this application embodiment provides an air passage 4, which includes a first end connected to the inlet valve port 1, a second end connected to the outlet valve port 6, and a third end on which a valve plate is installed. The valve plate is driven by a driving component to connect or close the air passage between the outlet valve port 6 and the inlet valve port 1.

[0061] In one embodiment, the air passage 4 is a Y-shaped tee pipe. The first end of the air passage 4 is connected to the air inlet valve port 1, the second end of the air passage 4 is connected to the air outlet valve port 6, and a valve plate is installed at the third end of the air passage 4. The driving component 3 drives the valve plate in the air passage 4 to connect or close the air passage between the air outlet valve port 6 and the air inlet valve port 1.

[0062] In one embodiment, the driving element can be a motor, which can be a voice coil motor.

[0063] In one embodiment, such as Figure 7As shown in the structure diagram of the driving member 8 in the exhalation valve and the related device provided by the embodiment of the present application, the third end of the air path pipeline 4 is in sealing connection with the sealing film 8-1, which can prevent the exhaled gas from overflowing from the exhalation valve and contacting the host, thereby preventing the host from being polluted. The driving member 8 is connected with the valve piece 8-2, and based on the control of the controller, the valve piece 8-2 in the air path pipeline 4 is driven to move in the air path pipeline 4, so as to connect or close the air path between the exhaust valve port 6 and the air inlet valve port 1.

[0064] Based on any one of the exhalation valves described above Figures 2-5 , Figure 7 The embodiment of the present application provides an exhalation valve, as shown in Figure 8 , the exhalation valve further comprises a knob 3 sleeved between the air path pipeline 4 and the air inlet valve port 1, and the knob 3 is rotated clockwise or counterclockwise by a preset angle to tightly connect the exhalation valve with the mounting seat 9 in the host, and the preset angle is less than or equal to 45°.

[0065] In an embodiment, the knob 3 can be rotated clockwise by a preset angle to tightly connect the exhalation valve with the mounting seat 9 in the host, or the knob 3 can be rotated counterclockwise by a preset angle to tightly connect the exhalation valve with the mounting seat 9 in the host.

[0066] In an embodiment, the guide bar 3-1 on the knob 3 and the clamping groove 9-1 on the mounting seat 9 can be mutually clamped, and when the knob 3 is rotated, the guide bar 3-1 can be clamped in the clamping groove 9-1, so as to tightly connect the exhalation valve with the mounting seat 9 in the host.

[0067] In an embodiment, the knob 3 is provided with a rotating knob 3-2, and the rotating knob 3-2 can be multiple and uniformly arranged on the knob 3, so as to facilitate the rotation of the knob 3. The surface of the rotating knob 3-2 can also be roughened to increase the friction of the surface of the rotating knob 3-2, thereby facilitating the rotation.

[0068] Based on any one of the exhalation valves described above Figures 2-5 , Figure 7 , 8 The embodiment of the present application provides an exhalation valve, as shown in Figure 9 , 10 The air path pipeline 4 is provided with a flow detection module 5, and the flow detection module 5 obtains the pressure difference of the exhaled gas flowing through the airflow detection metal film 5-1 in the air path pipeline.

[0069] In an embodiment, the gas path pipe 4 can further be provided with an internal pipe 4-1 inside, to ensure air tightness, ensure smooth operation of the valve piece 8-2, facilitate the arrangement of the airflow detection metal diaphragm 5-1, and the airflow detection metal diaphragm 5-1 is arranged in the internal pipe 4-1, and the flow detection module 5 can be separated from the gas path pipe 4, facilitating replacement.

[0070] In an embodiment, the embodiment of the present application further provides an exhalation valve base, as shown in Figure 11 , wherein the driving piece 8 abutting the third end of the gas path pipe 4 and the mounting seat 9 can be arranged in the ventilator as part of the exhalation valve, as the exhalation valve base, the exhalation valve base can be flexibly or fixedly arranged in the ventilator, and can be periodically detached from the ventilator for disinfection. That is, the driving piece 8 can be fixed to the mounting seat 9. The exhalation valve can be quickly fixed to the exhalation valve base, and can be periodically detached for disinfection according to needs. The driving piece 8 and the mounting seat 9 can not be disinfected.

[0071] In an embodiment, as shown in Figure 12 , a ventilator part appearance diagram is provided for the embodiment of the present application, which is a part of the appearance of a ventilator with an exhalation valve 1200 arranged in the ventilator.

[0072] Based on any one of the exhalation valves in Figures 2-5 , Figures 7-12 , the embodiment of the present application provides a ventilator, which comprises any one of the exhalation valves in Figures 2-5 , Figures 7-12 , or any one of the exhalation valves in the related embodiments.

[0073] Based on the ventilator using any one of the exhalation valves in Figures 2-5 , Figures 7-12 , or any one of the exhalation valves in the related embodiments, the embodiment of the present application provides a ventilator structure, as shown in Figure 13 , the ventilator 1300 can comprise: a treatment assembly 1301 for providing respiratory support for a medical subject, and the treatment assembly 1301 can be detachably provided with the exhalation valve in Figures 2-5 , Figures 7-12Any of the expiratory valves in the embodiments, or related embodiments, can also include an inhalation valve, a flow sensor, and other related components. The monitoring component 1302 is configured to collect respiratory physiological data of a medical subject, process the respiratory physiological data and the respiratory parameter data to obtain a processing result. The user interaction device 1303 is configured to provide a user interaction interface, and can also receive the respiratory physiological data transmitted by the monitoring component 1302, and the processing result obtained by processing the respiratory physiological data, and display the respiratory physiological data and the processing result on the user interaction interface; the user interaction interface can also display a plurality of groups of respiratory control parameters, and based on the clicking, double-clicking, pressing, and the like of the user, any one group of respiratory control parameters is selected to be transmitted to the controller 1304. The controller 1304 is configured to control the work of the breathing machine component, and control the user interaction unit 1303 to display the respiratory physiological parameters on the user interaction interface, generate an adjustment instruction corresponding to the selected group of respiratory control parameters according to the group of respiratory control parameters selected by the user, and instruct the treatment component 1301 to adjust the respiratory control parameters according to the adjustment instruction.

[0074] Although example embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the example embodiments are only exemplary and are not intended to limit the scope of the present application. Those of ordinary skill in the art can make various changes and modifications without departing from the scope and spirit of the present application. All such changes and modifications are intended to be included within the scope of the present application as claimed.

[0075] In several embodiments provided in the present application, it should be understood that the disclosed components and devices can be implemented in other ways. For example, the above-described device embodiments are only illustrative, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another device, or some features can be omitted or not executed.

[0076] In the specification provided herein, many specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known structures and techniques are not shown in detail in order not to obscure the understanding of the present specification.

[0077] Similarly, it is to be understood that the embodiments of the present application can be used in any combination, whether such combinations are specifically noted herein or not. For example, a combination of features, components, or processes from one embodiment can be used with features, components, or processes from another embodiment. Descriptions of the various features of the application in the specification should be considered in a similar light.

[0078] Those skilled in the art will appreciate that all features described herein (including all components and processes) can be replaced by alternative features serving the same, equivalent, or similar purposes, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed herein is one alternative.

[0079] The above description is only specific embodiments of the present application or specific explanations of the embodiments, and the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, and all such changes or replacements should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An exhalation valve, which is detachably mounted on a main unit of a respirator, characterized in that, The exhalation valve comprises a sequentially connected air inlet valve port, air path pipeline and air outlet valve port arranged through the main machine, so that the exhaled gas does not contact the main machine during the discharge process.

2. The exhalation valve of claim 1, wherein, The air inlet valve port is arranged towards the bottom of the main machine and forms a set angle with the sidewall of the main machine, and the set angle is less than 90°.

3. The exhalation valve of claim 1, wherein, Further comprising an air tightness detection assembly arranged in connection with the exhalation valve, and the air tightness detection assembly is arranged in non-contact with the main machine.

4. The exhalation valve of any of claims 1-3, wherein, The air path pipeline comprises a first end in communication with the air inlet valve port, a second end in communication with the air outlet valve port, a third end provided with a valve plate, and the valve plate is driven by a driving member to communicate or close the air path between the air outlet valve port and the air inlet valve port.

5. The exhalation valve of claim 4, wherein, The third end of the air path pipeline is sealed connected with a sealing film.

6. The exhalation valve of claim 1, wherein, Further comprising a knob sleeved between the air path pipeline and the air inlet valve port, and the knob is clockwise or counterclockwise rotated by a preset angle to fasten the exhalation valve with the mounting seat in the main machine, and the preset angle is less than or equal to 45°.

7. The exhalation valve of claim 1, wherein, The air path pipeline is provided with a flow detection module, and the flow detection module obtains the pressure difference of the exhaled gas flowing through the air flow detection metal film by arranging the air flow detection metal film in the air path pipeline.

8. The exhalation valve of claim 1, wherein, The air outlet valve port is provided with a one-way valve to prevent backflow of gas.

9. The exhalation valve of claim 4, wherein, The air tightness detection assembly is arranged on the side of the air inlet valve port of the air path pipeline, and the air tightness detection assembly is arranged in Y shape with the air inlet valve port.

10. A breathing machine characterized by, The breathing machine comprises the exhalation valve as claimed in any one of claims 1 to 9.

Images