One-way valve and anaesthesia machine thereof

Abstract

The utility model provides a one-way valve and an anaesthesia machine thereof, and belongs to the technical field of medical instruments, the one-way valve and the anaesthesia machine comprise a connecting assembly, a first connecting seat and a second connecting seat, the first connecting seat is provided with a first channel, and the second connecting seat is provided with a second channel; the adjusting assembly is located at the joint of the first channel and the second channel and used for communicating or blocking the first channel and the second channel; wherein the adjusting assembly comprises a fixing seat, an adjusting part and an elastic piece, a first adjusting channel is formed in the fixing seat in a penetrating mode, the first adjusting channel is used for communicating the first channel with the second channel, the adjusting part is movably arranged in the first adjusting channel, and the elastic piece is connected between the adjusting part and the fixing seat; the adjusting part is used for opening or closing the first adjusting channel under the action of the first connecting base and the elastic piece. The one-way valve belongs to a mechanical trigger one-way valve, and is fast in trigger response and low in failure rate.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a one-way valve and an anesthesia machine thereof. Background Art

[0002] An anesthesia machine is an instrument that uses inhaled anesthesia for general anesthesia. The anesthesia machine delivers anesthetic drugs into the patient's alveoli through a mechanical circuit. After the anesthetic gas partial pressure is formed and diffused into the blood, it directly inhibits the central nervous system, thereby producing the effect of general anesthesia.

[0003] In inhaled anesthesia, generally, a liquid anesthetic agent such as enflurane, isoflurane, sevoflurane, desflurane, etc. is converted into vapor by an evaporator in an anesthesia delivery system and then delivered to the patient. When the evaporator is in normal use, it requires high-pressure gas drive. When not in use, it is necessary to seal the medicine pool to prevent the evaporation and leakage of the anesthetic. Therefore, a one-way valve is needed to meet the functional requirements. Summary of the Utility Model

[0004] To overcome the problems existing in the related art, this specification provides a one-way valve and an anesthesia machine thereof. The one-way valve belongs to a mechanical trigger one-way valve, which has a fast trigger reaction and a low failure rate.

[0005] According to a first aspect of the present utility model, there is provided a one-way valve, comprising:

[0006] A connection assembly, including a first connection seat and a second connection seat. The first connection seat is provided with a first channel communicating with the outside, and the second connection seat is provided with a second channel communicating with the outside;

[0007] An adjustment assembly, connected between the first connection seat and the second connection seat and located at the connection of the first channel and the second channel, for connecting or blocking the first channel and the second channel;

[0008] Wherein, the adjustment assembly includes a fixed seat, an adjustment part and an elastic member. The fixed seat is fixedly connected to the connection of the first connection seat and the second connection seat. The fixed seat is provided with a first adjustment channel penetrating through it. The first adjustment channel is used to connect the first channel and the second channel. The adjustment part is movably arranged in the first adjustment channel, and the elastic member is connected between the adjustment part and the fixed seat;

[0009] The adjustment part is used to open or close the first adjustment channel under the action of the first connection seat and the elastic member;

[0010] When the first connection seat is pressed, the first connection seat squeezes and causes the adjustment portion to move from the first connection seat to the second connection seat, the elastic member is in a compressed state, and the first adjustment channel is opened, connecting the first channel and the second channel;

[0011] When the first connection seat is released, the adjustment portion moves from the second connection seat to the first connection seat under the elastic force of the elastic member, and the first adjustment channel is closed, blocking the first channel and the second channel.

[0012] In some exemplary embodiments of the present invention, the adjustment part includes a first adjustment part and a second adjustment part connected to each other, the second adjustment part is located on a side of the first adjustment part away from the first connecting seat, the elastic member is sleeved on the periphery of the second adjustment part and abuts between the first adjustment part and the fixed seat.

[0013] In some exemplary embodiments of the present utility model, the fixing seat is a hollow structure with one end open, the hollow structure forms a receiving cavity, a first through hole is penetrated through the closed end of the fixing seat, and the first through hole and the receiving cavity form the first adjustment channel;

[0014] The first adjustment part is movably disposed in the accommodating cavity, and the second adjustment part is movably disposed in the first through hole;

[0015] The elastic member abuts between the closed end of the fixing seat and the first adjusting portion;

[0016] When the first connecting seat is pressed, a gap is formed between the second adjusting portion and the hole wall of the first through hole, and the first through hole is opened;

[0017] When the first connecting seat is released, the second adjusting portion is sealed and connected to the hole wall of the first through hole, and the area of ​​the second adjusting portion located in the first through hole is a sealing body, and the first through hole is closed.

[0018] In some exemplary embodiments of the present invention, the second adjusting portion has a locking end for limiting the second adjusting portion from being separated from the first through hole when the adjusting portion moves from the second connecting seat to the first connecting seat.

[0019] In some exemplary embodiments of the present invention, the diameter of the first through hole at one end close to the first connecting seat is smaller than the diameter of the first through hole at one end away from the first connecting seat;

[0020] The outer diameter of the engaging end is larger than the minimum hole diameter of the first through hole.

[0021] In some exemplary embodiments of the present utility model, a second adjustment channel is provided inside the adjustment part, and the second adjustment channel communicates with the first adjustment channel;

[0022] When the first connection seat is pressed, there is a gap between the second adjustment part and the inner wall of the first through hole, and this gap communicates with the second adjustment channel.

[0023] In some exemplary embodiments of the present utility model, a sealing connection is always provided between the periphery of the first adjustment part and the inner wall of the first adjustment channel.

[0024] In some exemplary embodiments of the present utility model, both the first channel and the second adjustment channel extend along the arrangement direction of the first connection seat and the second connection seat, and the first channel and the second adjustment channel are coaxially arranged.

[0025] In some exemplary embodiments of the present utility model, the first connection seat includes an insertion part and a limiting part, and the limiting part is located on the side of the insertion part away from the second connection seat;

[0026] The insertion part is used to insert into the first adjustment channel to squeeze the adjustment part, and the limiting part is used to limit the insertion range of the adjustment part inserted into the first adjustment channel.

[0027] According to a second aspect of the present utility model, an anesthesia machine is provided, which includes an anesthesia machine main body, an evaporator, and the one-way valve as described in the first aspect, and the one-way valve is connected between the evaporator and the anesthesia machine main body.

[0028] The technical solution provided by the present utility model may include the following beneficial effects:

[0029] The one-way valve provided by the present utility model includes a first connection seat, a second connection seat, and an adjustment component. The first connection seat and the second connection seat are respectively used to connect to different parts of an anesthesia machine, and the adjustment component is used to adjust the connection or blockage of the channels in both the first connection seat and the second connection seat. The adjustment component includes a fixed seat, an adjustment part, and an elastic member. The first connection seat can act on the adjustment part, causing the adjustment part to move in a specific direction, ultimately connecting the channels in both the first connection seat and the second connection seat. The elastic member also acts on the adjustment part, and its acting direction on the adjustment part is opposite to that of the first connection seat, enabling the adjustment part to move in the direction opposite to the specific direction, ultimately blocking the channels in both the first connection seat and the second connection seat. The one-way valve provided in the present utility model is a mechanically triggered one-way valve, and the overall structure of the one-way valve is mechanical. Its structure is simpler and the cost is lower. Secondly, the actions of the first connection seat and the elastic member on the adjustment part are mechanical actions. Compared with an electronic one-way valve, it does not require a control system and signal transmission, etc. Its trigger response is fast, the acting method is more stable and direct, and the failure rate is low, which can effectively ensure the safety factor of the anesthesia machine and guarantee the safety of patients.

[0030] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this specification, and are used together with the specification to explain the principles of this specification.

[0032] Figure 1 is a schematic structural diagram of the connected state of the first channel and the second channel in the one-way valve in an exemplary embodiment of the present utility model;

[0033] Figure 2 is a schematic structural diagram of the blocked state of the first channel and the second channel in the one-way valve in an exemplary embodiment of the present utility model;

[0034] Figure 3 is an exploded view of the one-way valve in an exemplary embodiment of the present utility model;

[0035] Figure 4 is a schematic structural diagram of the adjustment part in an exemplary embodiment of the present utility model;

[0036] Figure 5 is a schematic structural diagram of the fixed seat in the one-way valve in an exemplary embodiment of the present utility model;

[0037] Figure 6 is a schematic structural diagram of the first connection seat in the one-way valve in an exemplary embodiment of the present utility model.

[0038] DESCRIPTION OF THE REFERENCE NUMERALS

[0039] 100 - Connecting component; 110 - First connecting seat; 111 - First channel; 112 - Insertion part; 113 - Limiting part; 120 - Second connecting seat; 121 - Second channel; 1211 - Installation cavity; 200 - Adjusting component; 210 - Fixed seat; 211 - First adjusting channel; 2111 - Accommodation cavity; 2112 - First through hole; 220 - Adjusting part; 221 - First adjusting part; 222 - Second adjusting part; 2221 - Engaging end; 223 - Second adjusting channel; 230 - Elastic member; 240 - Sealing ring. Detailed implementation mode

[0040] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this utility model will be complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present utility model and are not necessarily drawn to scale.

[0041] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the directions of the examples described in the drawings. It can be understood that if the device of the icon is turned upside down, the component described as "upper" will become the component described as "lower". When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" disposed on another structure, or that a structure is "indirectly" disposed on another structure through another structure.

[0042] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc.; the terms "first", "second", "third", etc. are only used as labels and are not a limitation on the quantity of their objects.

[0043] In the present utility model, terms such as "vertical" and "equal" refer to vertical and equal within the process error range, not vertical and equal in an absolute sense. The process error can be within ±10% or within ±5%. For example, if the first direction and the second direction are perpendicular, it can be understood that the included angle between the first direction and the second direction can be 90° ± 5°.

[0044] Such as Figures 1 to 6As shown in the figure, an embodiment of the present utility model provides a one-way valve, which includes a connection assembly 100 and an adjustment assembly 200. Among them, the connection assembly 100 includes a first connection seat 110 and a second connection seat 120. The first connection seat 110 is provided with a first channel 111 communicating with the outside, and the second connection seat 120 is provided with a second channel 121 communicating with the outside; the adjustment assembly 200 is connected between the first connection seat 110 and the second connection seat 120 and is located at the connection of the first channel 111 and the second channel 121 for communicating or blocking the first channel 111 and the second channel 121. The adjustment assembly 200 includes a fixed seat 210, an adjustment part 220 and an elastic part 230. The fixed seat 210 is fixedly connected to the connection of the first connection seat 110 and the second connection seat 120. The fixed seat 210 is provided with a first adjustment channel 211 penetrating through it. The first adjustment channel 211 is used to communicate the first channel 111 and the second channel 121. The adjustment part 220 is movably arranged in the first adjustment channel 211, and the elastic part 230 is connected between the adjustment part 220 and the fixed seat 210; the adjustment part 220 is used to open or close the first adjustment channel 211 under the action of the first connection seat 110 and the elastic part 230; when the first connection seat 110 is pressed, the first connection seat 110 squeezes and causes the adjustment part 220 to move in the direction from the first connection seat 110 to the second connection seat 120, and the elastic part 230 is in a compressed state, and the first adjustment channel 211 is opened to communicate the first channel 111 and the second channel 121; when the first connection seat 110 is released, the adjustment part 220 moves in the direction from the second connection seat 120 to the first connection seat 110 under the elastic force of the elastic part 230, and the first adjustment channel 211 is closed to block the first channel 111 and the second channel 121.

[0045] The one-way valve provided by the present utility model includes a first connection seat 110, a second connection seat 120, and an adjustment assembly 200. The first connection seat 110 and the second connection seat 120 are respectively used to connect to different parts of an anesthesia machine, and the adjustment assembly 200 is used to adjust the connection or blockage of the channels in both the first connection seat 110 and the second connection seat 120. The adjustment assembly 200 includes a fixed seat 210, an adjustment part 220, and an elastic member 230. The first connection seat 110 can act on the adjustment part 220 to make the adjustment part 220 move in a specific direction, ultimately connecting the channels in both the first connection seat 110 and the second connection seat 120. The elastic member 230 also acts on the adjustment part 220, and its acting direction on the adjustment part 220 is opposite to that of the first connection seat 110, so that the adjustment part 220 can move in the direction opposite to the specific direction, ultimately blocking the channels in both the first connection seat 110 and the second connection seat 120. The one-way valve provided by the present utility model is a mechanically triggered one-way valve, and the overall structure of the one-way valve is mechanical, with a simpler structure and lower cost. Secondly, the actions of the first connection seat 110 and the elastic member 230 on the adjustment part 220 are mechanical actions. Compared with an electronic one-way valve, there is no need for a control system and signal transmission, etc. Its trigger response is fast, the acting mode is more stable and direct, and the failure rate is low, which can effectively ensure the safety factor of the anesthesia machine and guarantee the safety of patients.

[0046] The following will describe in detail each part of the one-way valve for an anesthesia machine provided by the embodiments of the present utility model with reference to the accompanying drawings:

[0047] As Figures 1 to 6 shown, the one-way valve provided by the present utility model can be used in an anesthesia machine. The anesthesia machine may include an anesthesia machine main body and an evaporator. The evaporator is mainly used to convert a liquid anesthetic into steam and then deliver it to a patient through the anesthesia machine main body. The evaporator may include a tank body, and the anesthetic can be stored in the tank body. The anesthetic in the tank body needs to be driven by high-pressure gas to form steam. The one-way valve provided by the present utility model can be used to control the on-off of the gas path between the high-pressure gas and the tank body. Of course, the one-way valve provided by the present utility model can also be used in other pipelines of the anesthesia machine, such as for the patient's exhalation pipeline, so that the gas exhaled by the patient can only flow unidirectionally to a dedicated collection device and cannot flow back.

[0048] The one-way valve includes a connection assembly 100 and an adjustment assembly 200. The connection assembly 100 includes a first connection seat 110 and a second connection seat 120. The first connection seat 110 and the second connection seat 120 are respectively used to connect to different parts of an anesthesia machine, and the adjustment assembly 200 is used to adjust the connection or blockage of the channels in both the first connection seat 110 and the second connection seat 120. The first connection seat 110 can be connected to the anesthesia machine main body part, specifically, it can be connected to the outlet of the device providing high-pressure gas. The second connection seat 120 can be connected to the outlet end of the evaporator tank body.

[0049] The first connecting seat 110 is provided with a first channel 111 communicating with the outside, and the second connecting seat 120 is provided with a second channel 121 communicating with the outside. The connection and blockage of the first channel 111 and the second channel 121 can be adjusted by an adjusting assembly 200. When the first channel 111 and the second channel 121 are connected, the gas in the high-pressure gas device can enter the tank body of the evaporator through the first channel 111 and the second channel 121 for pressurization, so that the anesthetic in the tank body can enter the anesthesia machine under the drive of the high-pressure gas for patient anesthesia. When the first channel 111 and the second channel 121 are blocked, the tank body in the evaporator cannot communicate with the high-pressure gas path, thereby avoiding leakage of the anesthetic.

[0050] The shapes of the first channel 111 and the second channel 121 are not limited. In some embodiments of the present invention, the first channel 111 and the second channel 121 are generally strip-shaped channels. Among them, the second channel 121 in the second connecting seat 120 includes an installation cavity 1211, and the installation cavity 1211 is generally located in the area where the second channel 121 is close to the first connecting seat 110. The width of the installation cavity 1211 is greater than the width of other areas of the second channel 121, so as to provide an installation space for the adjusting assembly 200.

[0051] The adjusting assembly 200 is connected between the first connecting seat 110 and the second connecting seat 120 and is located at the connection of the first channel 111 and the second channel 121. Specifically, the adjusting assembly 200 can be located in the installation cavity 1211. The adjusting assembly 200 includes a fixed seat 210, an adjusting part 220 and an elastic part 230.

[0052] As Figures 1 to 3 shown, the fixed seat 210 is provided with a first adjusting channel 211 penetrating through it, and the first adjusting channel 211 communicates the first channel 111 and the second channel 121. The adjusting part 220 is movably arranged in the first adjusting channel 211, and the elastic part 230 is connected between the adjusting part 220 and the fixed seat 210. The adjusting part 220 is used to open or close the first adjusting channel 211 under the action of the first connecting seat 110 and the elastic part 230. The first connecting seat 110 and the elastic part 230 can apply acting forces in different directions to the adjusting part 220, so that the adjusting part 220 moves in different directions in the first adjusting channel 211, thereby opening or closing the first adjusting channel 211. Specifically, when the first connecting seat 110 is pressed, the first connecting seat 110 squeezes and urges the adjusting part 220 to move in the direction from the first connecting seat 110 to the second connecting seat 120, and the elastic part 230 is in a compressed state, and the first adjusting channel 211 is opened to communicate the first channel 111 and the second channel 121. When the first connecting seat 110 is released, the adjusting part 220 moves in the direction from the second connecting seat 120 to the first connecting seat 110 under the elastic force of the elastic part 230, and the first adjusting channel 211 is closed to block the first channel 111 and the second channel 121.

[0053] As Figures 1 to 3 , Figure 4 shown, the adjusting part 220 may include a first adjusting part 221 and a second adjusting part 222 which are connected to each other. The second adjusting part 222 is located on the side of the first adjusting part 221 away from the first connecting seat 110. When the first connecting seat 110 is pressed, the first connecting seat 110 can apply a force to the first adjusting part 221 in the direction from the first connecting seat 110 to the second connecting seat 120. The elastic member 230 is sleeved on the periphery of the second adjusting part 222 and abuts between the first adjusting part 221 and the fixed seat 210. When the elastic member 230 is in a compressed state, it can apply a force to the first adjusting part 221 in the direction from the second connecting seat 120 to the first connecting seat 110, and this force is opposite to the force applied by the first connecting seat 110 to the first adjusting part 221. By applying forces in different directions to the first adjusting part 221 by the first connecting seat 110 and the elastic member 230, the movement of the adjusting part 220 is controlled, and further the opening or closing of the first adjusting channel 211 is controlled.

[0054] The shape of the adjusting part 220 can be various. Optionally, the adjusting part 220 can be generally in the shape of a long rod structure. Among them, the outer diameter of the first adjusting part 221 is larger than the outer diameter of the second adjusting part 222 to facilitate the installation of the elastic member 230. The elastic member 230 can be a spring.

[0055] As Figures 1 to 3 , Figure 5 shown, the fixed seat 210 can be fixedly connected in the installation cavity 1211. The shape of the first adjusting channel 211 in the fixed seat 210 can be matched with the shape of the adjusting part 220. Optionally, the fixed seat 210 is a hollow structure with one end open. The hollow structure forms a receiving cavity 2111. The closed end of the fixed seat 210 is provided with a first through hole 2112. The first through hole 2112 and the receiving cavity 2111 form the first adjusting channel 211. The first adjusting part 221 is movably arranged in the receiving cavity 2111, and the second adjusting part 222 movably passes through the first through hole 2112. The elastic member 230 abuts between the closed end of the fixed seat 210 and the first adjusting part 221.

[0056] Under the action of the first connection seat 110 and the elastic member 230, the first adjustment part 221 can drive the second adjustment part 222 to move in the first through hole 2112. During the movement, the connection state of the second adjustment part 222 and the first through hole 2112 can change. Specifically, when the first connection seat 110 is pressed, there is a gap between the second adjustment part 222 and the hole wall of the first through hole 2112, the first through hole 2112 is opened, and the first channel 111 and the second channel 121 are connected. When the first connection seat 110 is released, the second adjustment part 222 is sealed and connected to the hole wall of the first through hole 2112, and the area where the second adjustment part 222 is located in the first through hole 2112 is a sealing body, and the first through hole 2112 is closed. At this time, the first adjustment channel 211 is closed, and the first channel 111 and the second channel 121 are also blocked. It should be noted here that the sealing body means that the structure is not provided with a through hole and the gas cannot pass through.

[0057] In some embodiments of the present invention, the shape of the second adjusting portion 222 and the shape of the first through hole 2112 may be specifically designed to restrict the movement of the second adjusting portion 222 in the first through hole 2112. For example, Figure 4 As shown, the second adjusting portion 222 has a locking end 2221 for limiting the second adjusting portion 222 from being separated from the first through hole 2112 when the adjusting portion 220 moves from the second connecting seat 120 to the first connecting seat 110 .

[0058] Furthermore, if Figure 5 As shown, the aperture of the end of the first through hole 2112 close to the first connecting seat 110 is smaller than the aperture of the end away from the first connecting seat 110; the outer diameter of the engaging end 2221 is larger than the minimum aperture of the first through hole 2112. Optionally, the first through hole 2112 may be roughly a frustum structure, and the engaging end 2221 may be a frustum structure roughly similar in shape to the first through hole 2112, or may be other structures such as a convex shape, which are not specifically limited. The engaging end 2221 is a sealing body. Preferably, a sealing ring 240 may be provided on the periphery of the second adjustment portion 222 to ensure the sealing effect between the second adjustment portion 222 and the hole wall of the first through hole 2112 when the first connecting seat 110 is loosened. The number of sealing rings 240 may be multiple, which are not specifically limited.

[0059] In some embodiments of the present invention, there is a gap between the first adjustment portion 221 and the first adjustment channel 211. When the first connecting seat 110 is pressed, the first channel 111 and the second channel 121 can be connected through the gap between the second adjustment portion 222 and the first through hole 2112 and the gap between the first adjustment portion 221 and the first adjustment channel 211.

[0060] In other embodiments of the present utility model, the first adjusting part 221 and the first adjusting channel 211 are always hermetically connected. At this time, the communication between the first channel 111 and the second channel 121 can be realized by arranging a second adjusting channel 223 in the adjusting part 220.

[0061] Specifically, as Figures 1 to 4 shown, a second adjusting channel 223 is arranged in the adjusting part 220, and the second adjusting channel 223 communicates with the first adjusting channel 211. When the first connecting seat 110 is pressed, there is a gap between the second adjusting part 222 and the pore wall of the first through hole 2112, and this gap communicates with the second adjusting channel 223. Both ends of the second adjusting channel 223 are open. One end can be open on the side of the first adjusting part 221 close to the first connecting seat 110, and the other end can be open on the side wall of the second adjusting part 222, and this end opening is located on the side of the engaging end 2221 close to the first connecting seat 110.

[0062] In this embodiment, a sealing ring 240 can be arranged between the periphery of the first adjusting part 221 and the inner wall of the first adjusting channel 211. When the first adjusting part 221 moves in the first adjusting channel 211, the sealing connection between the first adjusting part 221 and the wall of the first adjusting channel 211 can be effectively ensured through this sealing ring 240.

[0063] To further illustrate the action mechanism of the one-way valve provided by the present utility model, the following will be described in detail with reference to the accompanying drawings.

[0064] As Figure 2 shown, in the initial state, the elastic member 230 is in a compressed or free state. At this time, the second adjusting part 222 is hermetically connected to the first through hole 2112, the first through hole 2112 is closed, and the second channel 121 and the first channel 111 are in a blocked state. At this time, when the anesthetic in the evaporator tank enters the second connecting seat 120 from the b port, it will be blocked at the first through hole 2112 to prevent the leakage of the anesthetic.

[0065] As Figure 1As shown, in this type of embodiment, when the first connection seat 110 is pressed, the first connection seat 110 can apply a force to the adjustment part 220 in the T direction. Under this force, the adjustment part 220 moves to the left. During this process, the first adjustment part 221 and the first adjustment channel 211 are always in a sealed connection state. After the adjustment part 220 moves a certain distance, the engaging end 2221 of the second adjustment part 222 disengages from the first through hole 2112, opening the first through hole 2112. The first through hole 2112 communicates with the second adjustment channel 223, enabling the second channel 121 and the first channel 111 to communicate. At this time, high-pressure gas can enter the first channel 111 from port a of the first connection seat 110, and further pass through the second adjustment channel 223 and the second channel 121, and then be output from port b on the second connection seat 120, and then enter the tank body of the evaporator.

[0066] As Figure 2 shown, when the first connection seat 110 is released, the elastic member 230 applies a force to the adjustment part 220 in the D direction. Under this force, the adjustment part 220 moves to the right and gradually returns to its initial state. At this time, the second adjustment part 222 is in sealed connection with the first through hole 2112, the first through hole 2112 is closed, and the second channel 121 and the first channel 111 are in a blocked state.

[0067] Preferably, both the first channel 111 and the second adjustment channel 223 extend along the arrangement direction of the first connection seat 110 and the second connection seat 120, and the first channel 111 and the second adjustment channel 223 are coaxially arranged. In this case, the pressure loss of the high-pressure gas can be reduced, and the action efficiency of the high-pressure gas can be improved.

[0068] As Figure 6 shown, in some embodiments of the present invention, the first connection seat 110 includes an insertion part 112 and a limiting part 113. The limiting part 113 is located on the side of the insertion part 112 away from the second connection seat 120; the insertion part 112 is used to insert into the first adjustment channel 211 to squeeze the adjustment part 220, and the limiting part 113 is used to limit the insertion range of the adjustment part 220 inserted into the first adjustment channel 211.

[0069] The present invention also provides an anesthesia machine, including an anesthesia machine main body, an evaporator, and a one-way valve in any of the above embodiments. The one-way valve is connected between the evaporator and the anesthesia machine main body. The evaporator may include a tank body, and anesthetic can be stored in the tank body. The anesthetic in the tank body needs to be driven by high-pressure gas to form steam. The one-way valve provided by the present invention can be used to control the on-off of the gas path between the high-pressure gas and the tank body.

[0070] Those skilled in the art will readily conceive of other embodiments of the present utility model after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present utility model and include well-known knowledge or conventional technical means in the technical field not disclosed in the present utility model. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the appended claims.

Claims

1. A one-way valve, characterized in that: include: The connection assembly comprises a first connection seat and a second connection seat, wherein the first connection seat is provided with a first channel communicating with the outside, and the second connection seat is provided with a second channel communicating with the outside; an adjusting component, connected between the first connecting seat and the second connecting seat and located at the connection between the first channel and the second channel, and used for connecting or blocking the first channel and the second channel; Wherein, the adjustment assembly comprises a fixing seat, an adjustment part and an elastic member, the fixing seat is fixedly connected to the connection between the first connecting seat and the second connecting seat, a first adjustment channel is penetrated by the fixing seat, the first adjustment channel is used to connect the first channel and the second channel, the adjustment part is movably arranged in the first adjustment channel, and the elastic member is connected between the adjustment part and the fixing seat; The adjusting portion is used to open or close the first adjusting channel under the action of the first connecting seat and the elastic member; When the first connection seat is pressed, the first connection seat squeezes and causes the adjustment portion to move from the first connection seat to the second connection seat, the elastic member is in a compressed state, and the first adjustment channel is opened, connecting the first channel and the second channel; When the first connection seat is released, the adjustment portion moves from the second connection seat to the first connection seat under the elastic force of the elastic member, and the first adjustment channel is closed, blocking the first channel and the second channel.

2. The one-way valve according to claim 1, characterized in that: The adjusting portion comprises a first adjusting portion and a second adjusting portion connected to each other, the second adjusting portion is located on a side of the first adjusting portion away from the first connecting seat, the elastic member is sleeved on the periphery of the second adjusting portion and abuts between the first adjusting portion and the fixing seat.

3. The one-way valve according to claim 2, characterized in that: The fixing seat is a hollow structure with one end open, the hollow structure forms a receiving cavity, a first through hole is penetrated through the closed end of the fixing seat, and the first through hole and the receiving cavity form the first adjustment channel; The first adjustment part is movably disposed in the accommodating cavity, and the second adjustment part is movably disposed in the first through hole; The elastic member abuts between the closed end of the fixing seat and the first adjusting portion; When the first connecting seat is pressed, a gap is formed between the second adjusting portion and the hole wall of the first through hole, and the first through hole is opened; When the first connecting seat is released, the second adjusting portion is sealed and connected to the hole wall of the first through hole, and the area of ​​the second adjusting portion located in the first through hole is a sealing body, and the first through hole is closed.

4. The one-way valve according to claim 3, characterized in that: The second adjusting portion has a locking end, which is used to limit the second adjusting portion from being separated from the first through hole when the adjusting portion moves from the second connecting seat to the first connecting seat.

5. The one-way valve according to claim 4, characterized in that: The diameter of the first through hole at one end close to the first connecting seat is smaller than the diameter of the first through hole at one end away from the first connecting seat; The outer diameter of the engaging end is larger than the minimum hole diameter of the first through hole.

6. The one-way valve according to claim 3, characterized in that: A second regulating channel is provided in the regulating portion, and the second regulating channel is communicated with the first regulating channel; When the first connecting seat is pressed, a gap is formed between the second adjusting portion and the hole wall of the first through hole, and the gap is communicated with the second adjusting channel.

7. The one-way valve according to claim 6, characterized in that: The periphery of the first regulating portion is always sealed and connected to the inner wall of the first regulating channel.

8. The one-way valve according to claim 6, characterized in that: The first channel and the second adjustment channel both extend along the arrangement direction of the first connecting seat and the second connecting seat, and the first channel and the second adjustment channel are coaxially arranged.

9. The one-way valve according to claim 1, characterized in that: The first connection seat comprises an inserting portion and a limiting portion, wherein the limiting portion is located at a side of the inserting portion away from the second connection seat; The inserting portion is used to be inserted into the first adjusting channel to squeeze the adjusting portion, and the limiting portion is used to limit an insertion range of the adjusting portion into the first adjusting channel.

10. An anesthesia machine, characterized in that: The anesthesia machine comprises an anesthesia machine body, an evaporator and a one-way valve as claimed in any one of claims 1 to 9, wherein the one-way valve is connected between the evaporator and the anesthesia machine body.

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