Breather valve and anesthesia machine

Abstract

The breather valve comprises a valve body, the valve body is provided with a first through opening, a second through opening and a valve port which are communicated with one another, and a breathing channel is formed between the first through opening and the second through opening; the diaphragm is arranged in the valve body or the valve port, the diaphragm comprises a sealing part and an expansion part, the sealing part can close or open the valve port so as to correspondingly close or open the breathing channel, and the expansion part is provided with at least one pore structure. Due to the fact that the expanding part of the diaphragm is provided with the pore structure, the diaphragm can work more stably, vibration of the diaphragm is improved, vibration abnormal sound of the breather valve can be eliminated, more quiet use experience is brought to medical workers, and the operation quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a breathing valve and an anesthesia machine. Background Art

[0002] Existing medical devices such as anesthesia machines / ventilators are equipped with breathing valves to control the opening and closing of the gas path. The breathing valve controls the opening and closing of the gas path by controlling the opening degree of the exhalation valve diaphragm through a motor.

[0003] During the operation of the breathing valve in existing anesthesia machines / ventilators, obvious vibration and abnormal noise may occur. When the whole anesthesia machine vibrates and makes abnormal noises, on the one hand, it will affect the control accuracy, and on the other hand, it may also affect the operator's use due to sudden vibration and abnormal noise, which is a pain point problem that needs to be solved urgently. Summary of the Invention

[0004] The present invention provides a breathing valve and an anesthesia machine to solve the problem of vibration and abnormal noise of the breathing valve.

[0005] In one embodiment, a breathing valve is provided, including:

[0006] A valve body having a first port, a second port, and a valve port, with a breathing channel formed between the first port and the second port;

[0007] A diaphragm disposed at the valve port, the diaphragm including a sealing portion and an extension portion located outside the sealing portion. The sealing portion can close or open the valve port to correspondingly close or open the breathing channel, and at least one pore structure is provided on the extension portion.

[0008] In one embodiment, the pore structure is a hollow structure and / or a slit structure.

[0009] In one embodiment, a plurality of the pore structures and / or slit structures are provided on the extension portion and are evenly distributed around the sealing portion.

[0010] In one embodiment, the extension portion is a telescopic structure to drive the sealing portion to reciprocate axially relative to the valve port along the valve port, thereby closing or opening the valve port.

[0011] In one embodiment, the cross-sectional shape of the extension portion parallel to the axial direction of the valve port is U-shaped, and the U-shape protrudes away from the valve port.

[0012] In one embodiment, the diaphragm further includes a connecting portion located outside the extension portion, and the connecting portion is connected to the valve body.

[0013] In one embodiment, the connecting portion includes a first part, and the first part is connected to the extension portion.

[0014] In one embodiment, the connecting portion further includes a second part, which is a sleeve structure perpendicular to the sealing portion and extending along the axial direction parallel to the valve port, and the sleeve structure is sleeved on the outer periphery of the valve port.

[0015] In one embodiment, a groove is provided on the outer side of the end of the valve body having the valve port, and the connecting portion further includes a third part, which is a convex structure perpendicular to the second part and extending radially inward along the valve port diameter, and the convex structure is snap-fitted with the groove.

[0016] In one embodiment, the breathing valve further includes a driving member, the valve body further has an installation port, the driving member is arranged in the installation port, and the driving portion is used to drive the diaphragm to move between the valve port and the installation port to at least close the breathing channel.

[0017] In one embodiment, the driving member includes a main body portion and an output portion provided at one end of the main body portion, the main body portion is connected to the valve body, one end of the output portion away from the main body portion is close to or connected to the diaphragm, and the output portion is used to drive the diaphragm to move between the valve port and the installation port to at least close the breathing channel.

[0018] In one embodiment, the output portion is used to extend and push the diaphragm to move to close the valve port to close the breathing channel;

[0019] The output portion is further used to retract and separate from the diaphragm, and the diaphragm returns to its original state to open the valve port to open the breathing channel.

[0020] In one embodiment, one end of the output portion away from the main body portion is connected to the sealing portion;

[0021] The output portion is used to extend and push the diaphragm to move to close the valve port to close the breathing channel, and the output portion is further used to retract and pull the diaphragm to move to open the valve port to open the breathing channel.

[0022] In one embodiment, it further includes an isolation member, one end of the isolation member is connected to one end of the output portion away from the main body portion, the other end of the isolation member is connected to the main body portion and / or the valve body, and the isolation member is a telescopic flexible structure.

[0023] In one embodiment, the isolation member is a telescopic sleeve, the first end of the telescopic sleeve is hermetically connected to one end of the output portion away from the main body portion, the first end of the telescopic sleeve moves together with the output portion, so that the telescopic sleeve expands and contracts, and the second end of the telescopic sleeve is connected to the main body portion and / or the valve body.

[0024] In one embodiment, the side of the cross-section of the telescopic sleeve parallel to the axial direction of the valve port is wavy or serrated, so that the telescopic sleeve can expand and contract.

[0025] In one embodiment, a first mounting member is provided at one end of the output portion away from the main body portion, and the first end of the telescopic sleeve is sleeved on the first mounting member; a second mounting member is provided at one end of the main body portion close to the mounting port, and the second end of the telescopic sleeve is clamped between the second mounting member and the mounting port.

[0026] In one embodiment, the valve body is provided with a mounting hole, and the main body portion is connected to the mounting hole through a connecting member; a sealing gasket is provided between the main body portion and the valve body, and the sealing gasket is used to seal the mounting hole.

[0027] In one embodiment, the first through port is located at one end of the valve body, and the second through port is located on the side surface of the valve body;

[0028] And / or, the valve body includes a first valve body and a second valve body sleeved outside the first valve body. The first valve body has a through hole, one end of the first valve body has the first through port, the other end of the first valve body has the valve port, the other end of the first valve body is inserted into the second valve body, the second valve body has the mounting port, the mounting port is axially aligned with the through hole, the side surface of the second valve body is provided with the second through port, and there is a gap communicating the through hole and the second through port between the outer side wall of the first valve body and the inner side wall of the second valve body. The through hole and the gap form the breathing channel; the diaphragm is arranged at the other end of the first valve body, and the diaphragm is used to close or open the valve port to open or close the breathing channel accordingly.

[0029] In one embodiment, a breathing valve is provided, including:

[0030] A valve body having a first through port, a second through port and a valve port that communicate with each other. A breathing channel is formed between the first through port and the second through port, and the valve body also has a mounting port;

[0031] A diaphragm arranged at the valve port. The diaphragm includes a sealing portion and an extension portion located on the outer periphery of the sealing portion. The sealing portion can close or open the valve port to correspondingly close or open the breathing channel. The extension portion is provided with a damping structure, and the damping structure can improve the vibration of the diaphragm; and

[0032] A driving member arranged at the mounting port. The driving member is used to drive the diaphragm to move between the valve port and the mounting port to at least close the breathing channel.

[0033] In one embodiment, the driving member includes a main body portion and an output portion provided at one end of the main body portion. The main body portion is connected to the valve body, and one end of the output portion away from the main body portion is close to or connected to the diaphragm.

[0034] In one embodiment, the damping structure includes one or more of a hollow structure, a slit structure, and a thinning structure.

[0035] In one embodiment, the diaphragm further includes a connecting portion located on the outer periphery of the extending portion, and the connecting portion is connected to the valve body.

[0036] In one embodiment, the connecting portion includes a first part, and the first part is connected to the extending portion.

[0037] In one embodiment, the connecting portion further includes a second part, and the second part is a sleeve structure perpendicular to the sealing portion and extending along the axial direction parallel to the valve port. The sleeve structure is sleeved on the outer periphery of the valve port.

[0038] In one embodiment, a groove is provided on the outer side of the end portion of the valve body having the valve port. The connecting portion further includes a third part, and the third part is a protruding structure perpendicular to the second part and extending radially inward along the valve port diameter. The protruding structure is snap-connected to the groove.

[0039] In one embodiment, the output portion is used to extend and push the diaphragm to move to close the valve port to close the breathing channel;

[0040] The output portion is further used to retract and separate from the diaphragm, and the diaphragm returns to its original state to open the valve port to open the breathing channel.

[0041] In one embodiment, it further includes a spacer. One end of the spacer is connected to the end of the output portion away from the main body portion, and the other end of the spacer is connected to the main body portion and / or the valve body. The spacer is a telescopic flexible structure.

[0042] In one embodiment, an anesthesia machine is provided, which includes the above-mentioned breathing valve.

[0043] According to the breathing valve and the anesthesia machine of the above embodiments, since the extending portion of the diaphragm of the breathing valve is provided with a pore structure, the pore structure can improve the vibration of the diaphragm, make the diaphragm work more stably, and further eliminate the vibration abnormal sound of the breathing valve, bringing a quieter use experience to medical staff to ensure the surgical quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a cross-sectional view of the breathing valve in the open state in one embodiment;

[0045] Figure 2 Cross-sectional view of the breathing valve in the closed state in one embodiment;

[0046] Figure 3 Exploded view of the breathing valve in one embodiment;

[0047] Figure 4 Partial cross-sectional view of the breathing valve in one embodiment;

[0048] Figure 5 Schematic structural diagram of the diaphragm in one embodiment;

[0049] Figure 6 Detection diagram of diaphragm vibration in the prior art;

[0050] Figure 7 Detection diagram of diaphragm vibration in one embodiment.

[0051] The reference numerals are as follows:

[0052] 1 - valve body, 1a - first valve body, 1b - second valve body, 11 - first through port, 12 - second through port, 13 - valve port, 14 - mounting port, 15 - mounting hole, 16 - groove, 17 - first boss, 18 - second boss;

[0053] 2 - diaphragm, 21 - sealing portion, 221 - pore structure, 22 - extension portion, 23 - connecting portion, 231 - first part, 232 - second part, 233 - third part;

[0054] 3 - driving member, 31 - main body portion, 32 - output portion, 33 - first mounting member, 34 - second mounting member, 35 - sealing gasket;

[0055] 4 - isolating member. Detailed implementation manners

[0056] The inventors of the present application have conducted long-term observation and analysis on the vibration and abnormal noise phenomena of the breathing valve, and found that the reason for the vibration and abnormal noise is that the diaphragm of the breathing valve resonates with the cavity existing during operation, and the resonance causes the vibration of the breathing valve, thereby generating abnormal noise.

[0057] Based on the above analysis, the inventors of the present application have proposed a new breathing valve. By improving the diaphragm and changing the frequency of the diaphragm, the vibration of the diaphragm is improved, making the diaphragm work more stably, so that when the breathing valve is operating, the diaphragm will not resonate, thereby eliminating the vibration and abnormal noise generated by the resonance.

[0058] The present invention will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many details are described to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by excessive description. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the field.

[0059] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment, and do not mean that they are the necessary sequences, unless it is stated otherwise that a certain sequence must be followed.

[0060] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described, and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0061] In one embodiment, a breathing valve is provided. This breathing valve is mainly applied to the breathing pipeline of an anesthesia machine and is used to close and open the exhaust passage. Of course, this breathing valve can also be applied to the breathing pipelines of other medical products.

[0062] Please refer to Figures 1 to 5 , the breathing valve of this embodiment mainly includes a valve body 1, a diaphragm 2, and a driving member 3.

[0063] The valve body 1 can be a rigid plastic component. The rigid valve body 1 has a stable shape. The valve body 1 can also be a rigid material component such as metal or other materials with a stable shape. The valve body 1 has a cavity inside. The valve body 1 has a first port 11, a second port 12, and a valve port 13 that are interconnected. The first port 11 is used to connect to the connecting pipe of the anesthesia machine. The first port 11 is used for gas to flow in through this connecting pipe. A connecting part for connecting this connecting pipe can be provided at the first port 11. The connecting part can be a connecting structure such as a threaded structure or a buckle. The second port 12 is used to connect to the connecting pipe outside the anesthesia machine. The second port 12 is used for gas to flow out. The second port 12 can be directly connected to this connecting pipe, or the second port 12 can also be indirectly connected to this connecting pipe through structures such as a flow valve. A connecting part for connecting this connecting pipe can also be provided at the second port 12. The connecting part can be a connecting structure such as a threaded structure or a buckle.

[0064] A breathing channel is formed between the first port 11 and the second port 12. The inflowing gas received by the first port 11 is transmitted through the breathing channel to the second port 12 and flows out.

[0065] Among them, the first port 11 is located at one end of the valve body 1, and the second port 12 is located on the side of the valve body 1.

[0066] The valve body 1 can include a first valve body 1a and a second valve body 1b. The first valve body 1a can be a cylindrical or approximately cylindrical structure. The first valve body 1a has a through hole penetrating the first valve body 1a. The first valve body 1a can also be other structures with a through hole. The second valve body 1b is a cap-shaped or approximately cap-shaped structure. One end of the first valve body 1a is inserted into the second valve body 1b. The first valve body 1a can be entirely located inside the second valve body 1b, or the first valve body 1a can also be partially exposed outside the second valve body 1b. The second valve body 1b can also be other structures that can fit over the first valve body 1a. One end of the first valve body 1a has a valve port 13. The valve port 13 is located inside the second valve body 1b. The other end of the first valve body 1a has a first port 11. The first port 11 and the valve port 13 are located at both ends of the through hole of the first valve body 1a. The second port 12 is provided on the side of the second valve body 1b. The outer diameter of the first valve body 1a is smaller than the inner diameter of the second valve body 1b. There is a gap between the outer side wall of the first valve body 1a and the inner side wall of the second valve body 1b that communicates the through hole and the second port 12. The through hole of the first valve body 1a and this gap form a breathing channel.

[0067] The valve port 13 is located at the connection of the through hole and the gap. The diaphragm 2 is arranged at the valve port 13. The diaphragm 2 can close or open the valve port 13 to correspondingly close or open the breathing channel.

[0068] The diaphragm 2 includes a sealing portion 21 and an extension portion 22. The sealing portion 21 is located at the middle position of the diaphragm 2, and the extension portion 22 is located on the outer periphery of the sealing portion 21. The extension portion 22 is a deformation area. The sealing portion 21 can move through the deformation of the extension portion 22 to close or open the valve port 13, thereby closing or opening the breathing channel.

[0069] The sealing portion 21 belongs to a relatively rigid structure. A rigid structure such as a metal sheet can be provided inside the sealing portion 21 to increase the hardness of the sealing portion 21, so that the sealing portion 21 will not deform when closing the breathing channel, avoiding air leakage due to deformation in the closed state.

[0070] The outer layer of the sealing portion 21 can be a flexible structure such as silica gel. The flexible structure such as silica gel wraps the rigid structure such as a metal sheet, and the outer layer of the flexible structure is used to wrap and fix the rigid structure such as a metal sheet. When the sealing portion 21 closes the valve port 13, the sealing performance between the sealing portion 21 and the valve port 13 can be improved, that is, the sealing performance is improved when closing the breathing channel, avoiding air leakage in the closed state.

[0071] In other embodiments, the sealing portion 21 can also be provided with a flexible structure such as silica gel only at the connection with the valve port 13. Or, the rigid structure such as a metal sheet of the sealing portion 21 is embedded in the flexible structure such as silica gel, and a part of the rigid structure such as a metal sheet can be exposed from the flexible structure such as silica gel; or, the rigid structure such as a metal sheet is bonded to the side of the flexible structure such as silica gel and other structures for connecting the rigid structure such as a metal sheet and the flexible structure such as silica gel can all achieve the sealing of the valve port 13 and improve the sealing performance when closing the valve port 13.

[0072] The sealing portion 21 can also be other structures that can seal the valve port 13.

[0073] In this embodiment, the extension portion 22 is a flexible structure. The extension portion 22 can generate a large deformation and can allow the sealing portion 21 to move to close or open the valve port. The extension portion 22 can be made of silica gel material, and the extension portion 22 can also be made of other materials with flexible telescopic characteristics.

[0074] The extension portion 22 and the outer flexible structure such as silica gel of the sealing portion 21 can be an integral structure. Such a setting facilitates the production of the diaphragm 2 and can also improve the connection stability between the extension portion 22 and the sealing portion 21. Of course, the extension portion 22 and the flexible structure such as silica gel of the sealing portion 21 can also be fixedly connected by bonding, clamping and other methods; the extension portion 22 can also be fixedly connected to the rigid structure such as a metal sheet of the sealing portion 21 by bonding, clamping and other methods.

[0075] The diaphragm 2 can be located at the valve port 13. The sealing portion 21 of the diaphragm 2 can be moved to cover the valve port 13 to seal the through hole, thereby closing the breathing channel. The sealing portion 21 of the diaphragm 2 can also be moved away from the valve port 13 to connect the through hole and the gap, opening the breathing channel.

[0076] The valve body 1 is also provided with an installation port 14. The installation port 14 can be arranged on the second valve body 1b. The installation port 14 can be a circular port to fit driving components 3 such as a circular motor. The installation port 14 can also be a square port or other shapes to fit driving components 3 with other shapes. The installation port 14 is axially aligned with the valve port 13, and both the installation port 14 and the valve port 13 are located on the axis of the through hole of the first valve body 1a. The setting of the installation port 14 enables the driving component 3 to extend close to the diaphragm 2 and drive the diaphragm 2 to move, that is, drive the diaphragm 2 to move between the valve port 13 and the installation port 14 to close the breathing channel.

[0077] The driving component 3 can be a driving part such as a motor. The driving component 3 is arranged in the installation port 14. The driving component 3 includes a main body portion 31 and an output portion 32 arranged at one end of the main body portion 31. The main body portion 31 is located outside the valve body 1, that is, the main body portion 31 is installed outside the second valve body 1b. The main body portion 31 is fixedly connected to the second valve body 1b, and the main body portion 31 can cover the installation port 13.

[0078] The output portion 32 is a component such as an output shaft that can move linearly. The output portion 32 is located at the installation port 14. One end of the output portion 32 is connected to the main body portion 31, and the other end of the output portion 32 passes through the installation port 14 and extends into the interior of the valve body 1. And the other end of the output portion 32 located inside the valve body 1 is close to the sealing portion 21 of the diaphragm 2. The output portion 32 can move close to or away from the sealing portion 21 of the diaphragm 2 through linear movement. The output portion 32 is used to drive the movement of the diaphragm 2 to realize the closing of the breathing valve.

[0079] The other end (the end far from the main body portion 31) of the output portion 32 is separated from the sealing portion 21, and the output portion 32 drives the sealing portion 21 to move by abutting. Separating the driving component 3 from the diaphragm 2 enables the driving component 3 and the diaphragm 2 to be installed separately and then assembled together, which is convenient for installation. And the diaphragm 2 is independent of the driving component 3, and the diaphragm 2 can be replaced and maintained separately. By separating the driving component 3 from the diaphragm 2, the driving component 3 only needs to drive the diaphragm 2 to move to close the valve port 13. After the driving component 3 leaves the diaphragm 2, the diaphragm 2 can automatically reset to open the valve port 13, which can avoid the problem that the connection between the driving component 3 and the diaphragm 2 fails and the valve port 13 cannot be opened.

[0080] The working principle of this breathing valve is as follows:

[0081] Please refer to Figure 2, when the patient inhales, the output part 32 moves towards the direction close to the valve port 13. The output part 32 moves to contact the diaphragm 2 and pushes the sealing part 21 to move until the sealing part 21 abuts against the end of the first valve body 1a to seal the valve port 13 and close the breathing channel. At this time, the breathing valve is in the closed state;

[0082] Please refer to Figure 1 , when the patient exhales, the output part 32 moves towards the direction away from the valve port 13. The output part 32 moves to separate from the sealing part 21 of the diaphragm 2. Under the elastic action of the expansion part 22, the sealing part 21 separates from the first valve body 1a, and the sealing part 21 automatically resets, so that the valve port 13 is opened, and the through hole is communicated with the gap to open the breathing channel.

[0083] Among them, when the patient exhales, the opening degree of the valve port 13 can be controlled according to the needs of the patient when exhaling. For example, when the flow rate and pressure of the gas exhaled by the patient are large, the separation distance between the sealing part 21 and the first valve body 1a is large, that is, the opening degree of the valve port 13 is large; when the flow rate and pressure of the gas exhaled by the patient are small, the separation distance between the sealing part 21 and the first valve body 1a is small, that is, the opening degree of the valve port 13 is small; when the flow rate and pressure of the gas exhaled by the patient are small to a certain extent, the sealing part 21 maintains the reset state, the relative distance between the sealing part 21 and the first valve body 1a is fixed, and the opening degree of the valve port 13 remains certain. A certain amount of the gas exhaled by the patient is used to drive the adjustment of the opening degree of the valve port 13.

[0084] In this embodiment, the diaphragm 2 can be a disc structure, the sealing part 21 is a circular area, and the expansion part 22 is an annular area. The circular diaphragm 2 is easier to adapt to the breathing channel with a circular cross-section. Of course, when the cross-section of the breathing channel is set to other shapes such as square or oval, the diaphragm 2 can be set to the corresponding square or oval and other shapes.

[0085] In this embodiment, the expansion part 22 is provided with at least one pore structure 221, and the pore structure 221 can change the frequency of the diaphragm 2. The pore structure 221 can be a hollow structure, and the hollow structure penetrates through the two side surfaces of the expansion part 22. The setting of the hollow structure makes the expansion part 22 have greater flexibility, and then can change the frequency of the diaphragm 2, improve the vibration of the diaphragm 2, and at the same time be used to eliminate resonance, so that the diaphragm 2 works more stably.

[0086] The expansion part 22 can be provided with one or more pore structures 221, and the hollow shape of the pore structure 221 can be a fan shape, a circular shape or a square shape, etc.

[0087] Please refer to Figure 6 , in the figure, the light-colored squares indicate non-vibration, and the dark-colored squares indicate vibration. In the existing breathing valve, the area of the dark-colored squares in the figure accounts for a relatively large proportion, and the vibration range is large. That is, in most cases, the vibration of the diaphragm 2 will be found, which greatly affects the use experience.

[0088] Please refer to Figure 7 In the figure, the light-colored squares indicate non-vibration, and the dark-colored squares indicate vibration. In the breathing valve of this embodiment, all the squares in the figure are light-colored, and there is no dark-colored square area, so the breathing valve will not generate resonant vibration. It can be seen that in this embodiment, by providing a pore structure 221 in the extension part 22 of the diaphragm 2. The pore structure 221 can change the frequency of the diaphragm 2, improve the vibration of the diaphragm 2, make the diaphragm 2 work more stably, and at the same time, when the breathing valve is working, the diaphragm 2 will not resonate, thereby eliminating the vibration abnormal sound of the breathing valve, achieving vibration reduction and noise reduction, and bringing a quieter use experience to medical staff to ensure the quality of the operation.

[0089] In one embodiment, the extension part 22 is provided with a plurality of pore structures 221 evenly distributed around the sealing part 21, and a connecting strip is formed between adjacent pore structures 221. With such a setting, the extension part 22 forms a plurality of evenly distributed connecting strips connected to the sealing part 21. When the sealing part 21 is driven to move by the output part 32, the extension part 22 can provide a more uniform and stable tensile force, making the extension part 22 more stable during the movement and avoiding the inclination of the extension part 22.

[0090] In one embodiment, the pore structure 221 can also be a slit structure. The slit structure can be a structure that penetrates or does not penetrate the extension part 22, and the slit structure can be formed by blade cutting. The slit structure can also improve the flexibility of the extension part 22, and thus can change the frequency of the diaphragm 2 and can be used to eliminate resonance.

[0091] The extension part 22 has a first side facing the valve port 13 and a second side facing away from the valve port 13. The slit structure can be distributed on either the first side or the second side of the extension part 22, and both can play a role in changing the frequency.

[0092] The slit structure can be in the shape of a linear slit, a curved slit or a pattern slit, etc. The slit structure can also be one or more.

[0093] In one embodiment, the diaphragm 2 may further include a connecting part 23. The connecting part 23 is located on the outer periphery of the extension part 22, and the sealing part 21, the extension part 22 and the connecting part 23 are distributed in sequence from the inside to the outside. The shape of the connecting part 23 corresponds to that of the extension part 22. The extension part 22 is an annular structure, and the connecting part 23 is an annular structure with a larger size. The inner diameter of the connecting part 23 is equal to the outer diameter of the extension part 22.

[0094] The connecting part 23 and the extension part 22 can be an integrally formed flexible structure. The integral setting can improve the connection stability between the connecting part 23 and the extension part 22. The connecting part 23 can also be a rigid structure with a different material from the extension part 22, and the connecting part 23 is fixedly connected to the extension part 22 by bonding, clamping or other means.

[0095] The connecting portion 23 is connected to the valve body 1, and the connecting portion 23 is installed at the end of the first valve body 1a where the valve port 13 is located.

[0096] The connecting portion 23 includes a first portion 231 and a second portion 232. The first portion 231 can be parallel to the sealing portion 21, and the first portion 231 is connected to the extending portion 22. The second portion 232 is perpendicular to the first portion 231 and the sealing portion 21 and extends along the axial direction parallel to the valve port. The second portion 232 forms a sleeve structure that is sleeved on the outer side of the end of the first valve body 1a where the valve port 13 is located, that is, the sleeve structure is sleeved on the outer periphery of the valve port 13. The diaphragm 2 is sleeved on the outer periphery of the valve port 13 through the second portion 232. Furthermore, the diaphragm 2 can open or close the valve port 13. The connecting portion 23 is installed on the first valve body 1a by means of a sleeve structure, which facilitates the disassembly between the connecting portion 23 and the first valve body 1a, the installation of the diaphragm 2, and also the disassembly, maintenance and replacement of the diaphragm 2.

[0097] The connecting portion 23 may further include a third portion 233, and the third portion 233 is a convex structure perpendicular to the second portion 232 and extending radially inward along the valve port 13, that is, the third portion 233 is provided on the inner side surface of the second portion 232 facing the first valve body 1a. A groove 16 may be provided on the outer side of the end of the first valve body 1a where the valve port 13 is located. The groove 16 may be an annular groove located on the outer periphery of the first valve body 1a, and the annular groove is close to the valve port 13. The third portion 233 may be an annular protrusion corresponding to the annular groove. The annular protrusion of the connecting portion 23 is clamped in the annular groove of the first valve body 1a, and the connecting portion 23 is axially and radially limited relative to the first valve body 1a along the through hole of the first valve body 1a, so as to fixedly install the connecting portion 23 on the first valve body 1a, and further install the diaphragm 2 at the end of the first valve body 1a to realize opening or closing the valve port 13.

[0098] Among them, the third portion 233 may be a plurality of convex structures distributed on the same circumference provided on the second portion 232. A plurality of grooves 16 corresponding to the plurality of convex structures one by one are provided on the circumferential direction of the first valve body 1a, and the plurality of convex structures are clamped with the plurality of grooves 16 one by one. Or the first valve body 1a is provided with an annular groove, and the plurality of convex structures are clamped with the annular groove. Or the third portion 233 is a convex structure, and the first valve body 1a is provided with a groove 16, and one convex structure is clamped with one groove 16, all of which can realize the connection between the connecting portion 23 and the first valve body 1a and install the diaphragm 2 at the valve port 13.

[0099] The connecting portion 23 may also be provided only with the first portion 232 and the third portion 233. The third portion 233 is a convex structure provided on the surface of the first portion 232 facing the valve port 13. The groove 16 is provided on the end face of the first valve body 1a. The third portion 233 is clamped with the groove 16, and this clamping belongs to a tight interference fit and requires a relatively large force to separate, which can also achieve the connection between the connecting portion 23 and the first valve body 1a.

[0100] The third portion 233 may also be other forms of snap structures, so that the connecting portion 23 is connected to the valve body 1 through the third portion 233, thereby installing the diaphragm 2 at the valve port 13.

[0101] When the connecting portion 23 is also provided only with the first portion 232 and the second portion 232, the inner diameter of the sleeve structure formed by the second portion 232 is slightly smaller than the outer diameter of the end of the first valve body 1a having the valve port 13. The second portion 232 can be elastically contracted and bound to the outside of the first valve body 1a, which can also achieve the connection between the connecting portion 23 and the first valve body 1a. The second portion 232 can also be fixedly connected to the first valve body 1a by means of bonding, heat sealing, etc.

[0102] The connecting portion 23 may also be provided only with the first portion 232, and the first portion 232 can be fixedly connected to the first valve body 1a by means of bonding, heat sealing, etc.

[0103] In this embodiment, the connecting portion 23 can also be clamped between the first valve body 1a and the second valve body 1b. The end of the first valve body 1a having the valve port 13 extends radially outward along the valve port 13 to form a first boss 17. The valve port 13 is located on the end face of the first boss 17. A second boss 18 can be provided inside the second valve body 1b. In the axial direction of the valve port 13, a part of the first boss 17 and the second boss 18 are aligned. The first boss 17 abuts against one side of the first portion 231 of the connecting portion 23 facing the first valve body 1a, and the second boss 18 abuts against the other side of the first portion 231 of the connecting portion 23 facing away from the first valve body 1a. In this way, when the first valve body 1a and the second valve body 1b are inserted, the connecting portion 23 is clamped, which can further improve the stability of the fixed connection between the connecting portion 23 and the valve body 1.

[0104] In one embodiment, the connecting portion 23 may further include a first portion 231, a second portion 232 and a third portion. The end of the first valve body 1a having the valve port 13 extends radially outward along the valve port 13 to form a first boss 17. The connecting portion 23 is sleeved on the first boss 17, which can also facilitate the disassembly between the connecting portion 23 and the first valve body 1a, facilitate the installation of the diaphragm 2, and also facilitate the disassembly, maintenance and replacement of the diaphragm 2.

[0105] The fixed installation of the connecting part 23 and the valve body 1 enables the valve body 1 to provide a supporting force for the diaphragm 2. During the movement of the diaphragm 2, the sealing part 21 moves along the direction parallel to the axis of the valve port 13, the expansion part 22 deforms and expands telescopically, and the connecting part 23 can remain immobile and undeformed.

[0106] The connecting part 23 can be an annular structure that completely wraps the outer circumference of the expansion part 22, enabling the connecting part 23 to provide more stable tensile fixation when the expansion part 22 expands and deforms.

[0107] The connecting part 23 can also be a connecting structure such as a plurality of piece structures evenly spaced on the circumferential outer side of the expansion part 22, and this structure can also achieve the fixed connection between the diaphragm 2 and the valve body 1.

[0108] In one embodiment, the expansion part 22 is a telescopic structure, and the expansion and contraction of the expansion part 22 enable the sealing part 21 to reciprocate closer to or farther from the valve port 13 to close or open the valve port 13.

[0109] The expansion part 22 can be an annular concave structure concave towards the valve port 13. In other words, the expansion part 22 is an annular convex structure facing away from the valve port 13. The cross-section of the expansion part 22 is U-shaped, and the cross-section is an axial section parallel to the valve port 13, as Figure 1 shown in the cross-section. The U-shape of the expansion part 22 protrudes in the direction away from the valve port 13. The cross-section of the expansion part 22 is set to be U-shaped, enabling the expansion part 22 to have a certain telescopic stroke, and the U-shape is a set stable form. When the expansion part 22 is extruded and deformed by an external force and then loses the external force, it will recover to the U-shape through its own elastic force. During the recovery process, it can also apply a tensile force to the sealing part 21 to drive the sealing part 21 to reset; the U-shape of the expansion part 22 faces away from the valve port 13, enabling the expansion part 22 to also apply a pulling force away from the valve port 13 to the sealing part 21 to open the valve port 13.

[0110] The axial section of the expansion part 22 parallel to the valve port 13 can also be other shapes such as semicircular, triangular or wavy. Such a design enables the expansion part 22 to have a larger flat area, enabling the expansion part 22 to achieve deformation and expansion within a larger stroke range, and thus can increase the stroke of the movement of the sealing part 21.

[0111] The telescopic stroke of the expansion part 22 can be greater than the stroke of the sealing part 21 to open or close the breathing channel, so that during the opening or closing process of the breathing valve, the expansion part 22 will not reach its extreme telescopic degree, thereby avoiding over-fatigue damage of the expansion part 22 and increasing the service life of the diaphragm 2.

[0112] In one embodiment, the output part 32 can be connected to the sealing part 21 of the diaphragm 2. That is, during the opening or closing process of the breathing valve, the output part 32 is always connected to the sealing part 21. Among them, the output part 32 and the sealing part 21 can be an integrated structure, or the output part 32 is fixedly connected to the sealing part 21 by means of threaded connection, snap connection, etc.

[0113] With this structure set, the output part 32 can be used to extend and push the sealing part 21 to move to close the valve port to close the breathing channel, and the output part 32 can also be used to retract and pull the sealing part 21 to move to open the valve port to open the breathing channel. That is, the output part 32 can provide the power for the diaphragm 2 to open or close the valve port, can reduce the force on the extension part 22, and improve the service life of the diaphragm 2.

[0114] In one embodiment, the valve body 1 can also be an integrated structure and is integrally formed by means of injection molding, cutting processing, etc.

[0115] For the integrated valve body 1, a boss structure is provided on the outer periphery of the valve port 13, and the diaphragm 2 can be installed on the protruding structure on the outer periphery of the valve port 13. Similarly, the diaphragm 2 can be installed at the valve port 13 to realize the opening or closing of the valve port 13.

[0116] Alternatively, for the integrated valve body 1, the diaphragm 2 can also be arranged at the installation port 14, and the output part 32 of the driving part 3 is located outside the valve body 1. The output part 32 can drive the diaphragm 2 to deform and extend into the valve port 13 inside the valve body 1 to open or close the breathing channel, and similarly, the opening or closing of the valve body 1 can be realized.

[0117] The valve body 1 can also be of other structures. For example, the valve body 1 is composed of multiple components, and the multiple components can be fixed together by means of threaded connection, welding, bonding, etc.

[0118] In one embodiment, the breathing valve further includes a separator 4. The separator 4 is used to separate the cavity formed between the output part 32 and the valve port and the installation port inside the valve body 1, so as to prevent the gas discharged from the breathing valve from entering the inside of the driving part 3 through the pore structure. Taking an anesthesia machine as an example, the gas exhaled by the patient contains chemical components such as anesthetic drugs. If this gas enters the inside of the driving part 3, it will corrode the components inside the driving part 3, thereby affecting the use of the driving part 3.

[0119] One end of the separator 4 is connected to the end of the output part 32 away from the main body part 31, and the other end of the separator 4 is snap-connected between the main body part 31 and the valve body 1. Equivalent to the separator 4 being installed on the driving part 3, the separator 4 wraps the output part 32, so that the gas inside the valve body 1 cannot enter the inside of the driving part 3.

[0120] The other end of the spacer 4 can also be separately installed on the main body 31 or the valve body 1 to achieve the installation of the spacer 4 and wrap the output part 32 of the driving member 3, so that the gas in the valve body 1 cannot enter the interior of the driving member 3.

[0121] The spacer 4 can be a telescopic sleeve. The spacer 4 can be a silicone telescopic sleeve. The axial cross-section of the spacer 4 parallel to the valve port 13 is a trapezoidal structure. As Figure 1 shown in the cross-section, the two sides of the trapezoid are wavy or serrated, and the telescopic of the spacer 4 is achieved through the telescopic of the two sides. The first end of the telescopic sleeve is hermetically connected to the end of the output part 32 far from the main body 31. The first end of the telescopic sleeve can move together with the output part 32. The second end of the telescopic sleeve is clamped between the main body 31 and the installation port 14 of the valve body 1, and the second end of the telescopic sleeve is fixed. The second end of the telescopic sleeve can also be provided as an annular protrusion. The cross-section of the annular protrusion can be circular. The telescopic sleeve is clamped between the main body 31 and the installation port 14 of the valve body 1 through the annular protrusion, which can improve the sealing performance of the connection of the second end of the telescopic sleeve.

[0122] The axial cross-section of the spacer 4 parallel to the valve port 13 can also be other closed shapes such as a rectangle.

[0123] In one embodiment, the spacer 4 can also be an elastic spacer. The elastic spacer can be a disc structure. The edge of the elastic spacer is installed between the valve body 1 and the main body 31. The elastic spacer seals the gap between the main body 31 and the installation port 14. A through hole is provided in the middle of the elastic spacer. The output part 32 is slidably and hermetically connected to the through hole. When the output part 32 moves, the elastic spacer does not move. The setting of the elastic spacer can also prevent the gas in the valve body 1 from entering the interior of the main body 31 and avoid the corrosion of the interior of the main body 31 by the exhaled gas.

[0124] In one embodiment, a first mounting member 33 is provided at the end of the output part 32 close to the diaphragm 2, that is, a first mounting member 33 is provided at the end of the output part 32 far from the main body 31. The first mounting member 33 can be a disc structure with a through hole in the middle. The first mounting member 33 can also be other structures such as a cap-shaped structure. The first mounting member 33 is sleeved on the end of the output part 32 far from the main body 31. One end of the telescopic sleeve is sleeved on the disc structure, and the disc structure is stuck in an annular groove of the telescopic sleeve. The output part 32 can be hermetically connected to the telescopic sleeve through the disc structure.

[0125] Of course, one end of the telescopic sleeve can also be fixed to the disc structure by bonding or threaded connection, and the hermetic connection between the telescopic sleeve and the disc structure can also be achieved.

[0126] The first mounting member 33 can be fixedly connected to the output part 32 by threaded connection, clamping, etc. The first mounting member 33 can also be an integral structure with the output part 32.

[0127] One end of the main body part 31 close to the mounting port 14 is provided with a second mounting member 34. The main body part 31 can be connected to the mounting port 14 through the second mounting member 34. The second mounting member 34 can also be a disc structure with a through hole in the middle or other annular structures. The other end of the telescopic sleeve is clamped between the second mounting member 34 and the mounting port 14.

[0128] The thickness of one end of the telescopic sleeve clamped between the second mounting member 34 and the mounting port 14 can be greater than the thickness of other areas. The end of the telescopic sleeve with increased thickness can fill the gap of the mounting port 14 through elastic deformation, which is more conducive to sealing the mounting port 14.

[0129] The telescopic sleeve not only separates the driving member 3 from the space inside the valve body 1, but also can isolate the valve body 1 from the outside world, avoiding the leakage of gas inside the valve body 1.

[0130] The second mounting member 34 can be fixedly connected to the main body part 31 by means of threaded connection, clamping, etc. The first mounting member 33 can also be an integral structure with the main body part 31.

[0131] In one embodiment, one end of the valve body 1 close to the driving member 3 is further provided with a mounting hole 15. The main body part 31 of the driving member 3 can be provided with corresponding mounting structures such as threaded holes or through holes. The valve body 1 and the main body part 31 can be fixedly connected by connecting structures such as screws and pins. The connecting structures such as screws and pins pass through the mounting hole 15 and are connected to the main body part 31.

[0132] A gasket 35 can also be provided between the valve body 1 and the main body part 31. The gasket 35 can be an elastic gasket such as a silica gel gasket or a rubber gasket. The gasket 35 has through holes or openings for avoiding the output part 32 and the screws. The gasket 35 is used to seal the mounting hole 15, so that the gas inside the valve body 1 cannot leak from the mounting hole 15.

[0133] In one embodiment, the extended part 22 of the diaphragm 2 can be provided with a vibration damping structure, which can change the frequency of the diaphragm 2, and thus can improve the vibration of the diaphragm 2.

[0134] The vibration damping structure can be the hollow structure or the gap structure in the above embodiment.

[0135] The vibration damping structure can also be a thinning structure on the extended part 22, and the thickness of this thinning structure is less than the thickness of other non-thinning areas on the extended part 22.

[0136] The vibration damping structure can also be a combination of one, two or three of the hollow structure, the gap structure and the thinning structure.

[0137] Adopting the above methods can all improve the vibration of the diaphragm 2, make the diaphragm 2 work more stably, thus eliminating the resonance generated by the diaphragm 2, and further eliminating the vibration noise.

[0138] In one embodiment, an anesthesia machine is provided. The anesthesia machine includes the breathing valve in any of the above embodiments. The first port 11 of the breathing valve is connected to the connecting pipe of the anesthesia machine, and the second port 12 of the breathing valve is directly or indirectly connected to an external connecting pipe. The connecting pipe of the anesthesia machine, the breathing valve, and the external connecting pipe are connected in series to form an exhaust pipeline. The connecting pipe of the anesthesia machine discharges the exhaled gas into the breathing valve, and the breathing valve then discharges the exhaled gas through the external connecting pipe.

[0139] A damping structure is provided on the diaphragm 2 of the breathing valve, which can improve the vibration of the diaphragm 2, make the diaphragm 2 work more stably, thereby eliminating the resonance generated by the diaphragm 2, and further eliminating the vibration abnormal sound of the breathing valve, bringing a quieter use experience to medical staff to ensure the quality of the operation.

[0140] For the breathing valve of the present application, the extension part 21 of the diaphragm 2 is provided with a pore structure 221. The pore structure 221 can change the frequency of the diaphragm 2, improve the vibration of the diaphragm 2, make the diaphragm 2 work more stably, and further eliminate the vibration abnormal sound of the breathing valve, bringing a quieter use experience to medical staff to ensure the quality of the operation.

[0141] The driving member 3 is used to drive the diaphragm 2 to move to close the valve port 13 to close the breathing valve, and the diaphragm 2 returns to its original position by its own elastic force to open the valve port 13 to open the breathing valve. The diaphragm 2 and the driving member 3 are separated, which can realize the separate installation of the diaphragm 2 and the driving member 3, facilitating the disassembly and assembly of the breathing valve. At the same time, the diaphragm 2 is independent of the driving member 3, enabling the separate replacement and maintenance of the diaphragm 2. Also, by separating the driving member 3 from the diaphragm 2, the driving member 3 only needs to drive the diaphragm 2 to move to close the valve port 13. After the driving member 3 leaves the diaphragm 2, the diaphragm 2 can automatically return to its original position to open the valve port 13, avoiding the problem that the connection between the driving member 3 and the diaphragm 2 fails and the valve port 13 cannot be opened.

[0142] The diaphragm 2 is connected to the valve body 1, and the valve body 1 can support the diaphragm 2. Under the support of the valve body 1, the diaphragm 2 can return to its original position by its own elastic force, thus saving the drive for one-way travel and saving energy.

[0143] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, based on the idea of the present invention, several simple deductions, deformations, or replacements can also be made.

Claims

1. A breathing valve, characterized in that, Comprising: A valve body having a first port, a second port, and a valve port, with a breathing passage formed between the first port and the second port; A diaphragm disposed at the valve port, the diaphragm including a sealing portion and an extension portion located on the outer periphery of the sealing portion. The sealing portion can close or open the valve port to correspondingly close or open the breathing passage, and at least one pore structure is provided on the extension portion.

2. The breathing valve according to claim 1, characterized in that, The pore structure is a hollow structure and / or a slit structure.

3. The breathing valve according to claim 2, wherein, A plurality of the pore structures and / or slit structures are provided on the extension portion and are evenly distributed around the sealing portion.

4. The breathing valve according to claim 1, characterized in that, The extension portion is a telescopic structure to drive the sealing portion to reciprocate axially relative to the valve port along the valve port, thereby closing or opening the valve port.

5. The breathing valve according to claim 4, wherein The cross-sectional shape of the extension portion parallel to the axial direction of the valve port is U-shaped, and the U-shape protrudes away from the valve port.

6. The breathing valve according to claim 1, characterized in that, The diaphragm further includes a connecting portion located on the outer periphery of the extension portion, and the connecting portion is connected to the valve body.

7. The breathing valve according to claim 6, characterized in that, The connecting portion includes a first part, and the first part is connected to the extension portion.

8. The breathing valve according to claim 7, characterized in that, The connecting portion further includes a second part, which is a sleeve structure perpendicular to the sealing portion and extending along the axial direction parallel to the valve port, and the sleeve structure is sleeved on the outer periphery of the valve port.

9. The breathing valve according to claim 8, wherein A groove is provided on the outer side of the end of the valve body having the valve port, and the connecting portion further includes a third part, which is a protrusion structure perpendicular to the second part and extending radially inward along the valve port diameter, and the protrusion structure is snap-connected to the groove.

10. The breathing valve according to any one of claims 1 to 9, characterized in that, The breathing valve further includes a driving member, and the valve body further has a mounting port. The driving member is disposed in the mounting port, and the driving member is used to drive the diaphragm to move between the valve port and the mounting port to at least close the breathing passage.

11. The breathing valve according to claim 10, characterized in that, The driving member includes a main body portion and an output portion provided at one end of the main body portion. The main body portion is connected to the valve body, and the end of the output portion away from the main body portion is close to or connected to the diaphragm. The output portion is used to drive the diaphragm to move between the valve port and the mounting port to at least close the breathing passage.

12. The breathing valve according to claim 11, wherein, The output portion is used to extend and push the diaphragm to move to close the valve port to close the breathing passage; The output portion is further used to retract and separate from the diaphragm, and the diaphragm is restored to open the valve port to open the breathing passage.

13. The breathing valve according to claim 11, wherein The end of the output portion away from the main body portion is connected to the sealing portion; The output portion is used to extend and push the diaphragm to move to close the valve port to close the breathing passage, and the output portion is further used to retract and pull the diaphragm to move to open the valve port to open the breathing passage.

14. The breathing valve according to claim 11, characterized in that, It further includes an isolation member. One end of the isolation member is connected to the end of the output portion away from the main body portion, and the other end of the isolation member is connected to the main body portion and / or the valve body. The isolation member is a telescopic flexible structure.

15. The breathing valve according to claim 14, characterized in that, The spacer is a telescopic sleeve. The first end of the telescopic sleeve is connected to the end of the output part away from the main body part. The first end of the telescopic sleeve moves together with the output part, causing the telescopic sleeve to expand and contract. The second end of the telescopic sleeve is connected to the main body part and / or the valve body.

16. The breathing valve according to claim 15, wherein, The side of the cross-section of the telescopic sleeve parallel to the axial direction of the valve port is wavy or serrated, so that the telescopic sleeve can expand and contract.

17. The breathing valve according to claim 15, characterized in that, A first mounting member is provided at the end of the output part away from the main body part. The first end of the telescopic sleeve is sleeved on the first mounting member. A second mounting member is provided at the end of the main body part close to the mounting port. The second end of the telescopic sleeve is clamped between the second mounting member and the mounting port.

18. The breathing valve according to claim 11, characterized in that, The valve body is provided with a mounting hole. The main body part is connected to the mounting hole through a connecting member. A sealing gasket is provided between the main body part and the valve body. The sealing gasket is used to seal the mounting hole.

19. The breathing valve according to claim 10, characterized in that, The first through port is located at one end of the valve body, and the second through port is located on the side surface of the valve body. And / or, the valve body includes a first valve body and a second valve body sleeved outside the first valve body. The first valve body has a through hole. One end of the first valve body has the first through port, and the other end of the first valve body has the valve port. The second valve body has the mounting port. The mounting port is axially aligned with the through hole. The second through port is provided on the side surface of the second valve body. There is a gap between the outer side wall of the first valve body and the inner side wall of the second valve body, which communicates the through hole and the second through port. The through hole and the gap form the breathing channel. The diaphragm is arranged at the valve port. The diaphragm is used to close or open the valve port to realize opening or closing the breathing channel.

20. A breathing valve, characterized in that, Comprising: A valve body having a first through port, a second through port and a valve port. A breathing channel is formed between the first through port and the second through port. The valve body also has a mounting port. A diaphragm arranged at the valve port. The diaphragm includes a sealing part and an extension part located on the outer periphery of the sealing part. The sealing part can close or open the valve port to correspondingly close or open the breathing channel. The extension part is provided with a damping structure, and the damping structure can improve the vibration of the diaphragm. And A driving member arranged at the mounting port. The driving member is used to drive the diaphragm to move between the valve port and the mounting port to at least realize the closing of the breathing channel.

21. The breathing valve according to claim 20, characterized in that, The driving member includes a main body part and an output part arranged at one end of the main body part. The main body part is connected to the valve body. The end of the output part away from the main body part is close to or connected to the diaphragm.

22. The breathing valve according to claim 20, characterized in that, The damping structure includes one or more of a hollow structure, a slit structure and a thinning structure.

23. The breathing valve according to claim 20, characterized in that, The diaphragm further includes a connecting part located on the outer periphery of the extension part. The connecting part is connected to the valve body.

24. The breathing valve according to claim 23, characterized in that, The connecting part includes a first part, and the first part is connected to the extension part.

25. The breathing valve according to claim 24, characterized in that, The connecting part further includes a second part, and the second part is a sleeve structure perpendicular to the sealing part and extending along the axial direction parallel to the valve port. The sleeve structure is sleeved on the outer periphery of the valve port.

26. The breathing valve according to claim 25, characterized in that, The outer side of the end of the valve body having the valve port is provided with a groove. The connecting portion further includes a third portion, and the third portion is a convex structure perpendicular to the second portion and extending radially inward along the valve port diameter, and the convex structure is snap-fitted with the groove.

27. The breathing valve according to claim 21, wherein, The output portion is configured to extend and push the diaphragm to move to close the valve port so as to close the breathing passage; The output portion is further configured to retract and separate from the diaphragm, and the diaphragm is restored to open the valve port so as to open the breathing passage.

28. The breathing valve according to claim 21, wherein, One end of the output portion away from the main body portion is connected to the sealing portion; The output portion is configured to extend and push the diaphragm to move to close the valve port so as to close the breathing passage, and the output portion is further configured to retract and pull the diaphragm to move to open the valve port so as to open the breathing passage.

29. The breathing valve according to claim 21, characterized in that, It further includes a spacer, one end of the spacer is connected to the end of the output portion away from the main body portion, the other end of the spacer is connected to the main body portion and / or the valve body, and the spacer is a telescopic flexible structure.

30. An anesthetic machine, characterized in that, It includes a breathing valve according to any one of claims 1 to 29.

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