CN217885961U - Suction valve assembly, endoscope handle and endoscope - Google Patents
Suction valve assembly, endoscope handle and endoscope Download PDFInfo
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- CN217885961U CN217885961U CN202221674967.4U CN202221674967U CN217885961U CN 217885961 U CN217885961 U CN 217885961U CN 202221674967 U CN202221674967 U CN 202221674967U CN 217885961 U CN217885961 U CN 217885961U
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Abstract
The utility model discloses an attraction valve subassembly, endoscope handle and endoscope, the attraction valve subassembly that discloses includes apparatus tube connecting piece and valve subassembly, apparatus tube connecting piece is provided with the apparatus passageway that the axial is link up, the valve subassembly includes valve seat and valve rod, the valve seat is provided with the negative pressure hole that holds the cavity and be linked together with holding the cavity that the axial is link up, hold the cavity and be linked together with the apparatus passageway with preset direction, the valve rod is movably set up in holding the cavity, when the valve rod is in the first position, the negative pressure hole cuts off with the apparatus passageway, when the valve rod is in the second position, the negative pressure hole is linked together with the apparatus passageway; the instrument channel is communicated with the instrument tube all the time, the treatment instrument can stretch into the human body through the instrument tube connecting piece and the instrument tube in sequence, the valve rod is pressed to be located at the second position, the negative pressure hole is communicated with the instrument tube through the containing cavity and the instrument channel in sequence to extract liquid in the human body, and the suction valve assembly has the characteristic of multiple purposes, and can improve the compactness of the layout in the endoscope handle.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a suction valve subassembly, endoscope handle and endoscope.
Background
An endoscope is a commonly used medical instrument, which is an examination instrument capable of directly entering a natural duct of a human body and can provide sufficient diagnosis information for doctors to treat diseases.
The endoscope comprises an endoscope handle which can be operated by medical staff to shoot images, treat or suck liquid at a focus part of a patient, and the endoscope handle in the related technology occupies a large space, so that the endoscope is difficult to develop towards miniaturization.
Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a compact endoscope handle.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a suction valve subassembly, endoscope handle and endoscope to the space that the endoscope handle exists among the solution correlation technique occupies big technical problem.
In order to solve the above problem, the utility model adopts the following technical scheme:
in a first aspect, the present application provides a suction valve assembly, the disclosed suction valve assembly comprising:
an instrument tube connector provided with an instrument channel running through along an axial direction thereof;
the valve assembly comprises a valve seat and a valve rod, the valve seat is provided with an accommodating cavity which is communicated along the axial direction of the valve seat and a negative pressure hole which is communicated with the accommodating cavity, the accommodating cavity is communicated with the instrument channel in a preset direction, and an included angle is formed between the preset direction and the axial direction of the instrument tube connecting piece;
the valve rod is movably arranged in the accommodating cavity body and at least comprises a first position and a second position, the negative pressure hole is isolated from the instrument channel under the condition that the valve rod is at the first position, and the negative pressure hole is communicated with the instrument channel under the condition that the valve rod is at the second position.
Further, the accommodating cavity comprises a valve rod installation cavity and an instrument channel butt joint cavity which are axially distributed along the valve seat, the negative pressure hole is communicated with the valve rod installation cavity, and the instrument channel is communicated with the instrument channel butt joint cavity.
The valve assembly also includes a first seal that blocks the valve stem mounting cavity and the instrument channel docking cavity when the valve stem is in the first position.
Further, the valve rod is provided with a limiting part, and the first sealing element is in limiting fit with the limiting part so as to limit the axial movement of the first sealing element along the valve rod.
Further, the valve seat is further provided with an atmosphere communication hole communicated with the accommodating cavity, the atmosphere communication hole is communicated with the negative pressure hole when the valve rod is at the first position, and the atmosphere communication hole is isolated from the negative pressure hole when the valve rod is at the second position.
Further, the valve assembly further includes a second seal that blocks the negative pressure hole and the atmosphere communication hole with the valve stem in the second position.
Further, the valve assembly further comprises a resetting piece, the resetting piece is connected with the valve seat and the valve rod, and the resetting piece can drive the valve rod to be switched from the second position to the first position.
Further, the piece that resets includes the spring, the both ends of spring respectively with the valve rod with the disk seat links to each other.
Or, the piece that resets includes first magnetism spare and second magnetism spare, first magnetism spare is located the valve rod, second magnetism spare is located the disk seat, first magnetism spare with second magnetism spare produces magnetic repulsion, in order to drive the valve rod by the second position moves to first position.
Further, the proximal end of the instrument channel has an insertion section, and the caliber of the insertion section is gradually reduced in the insertion direction of the instrument in the instrument channel.
Further, the suction valve assembly further comprises an instrument plug connected to the instrument tube, the instrument plug being capable of occluding the proximal end of the instrument channel.
In a second aspect, the embodiment of the present application further discloses an endoscope handle, which includes a housing and the aforementioned suction valve assembly, where the housing is provided with a suction valve installation location, and the suction valve assembly is provided with the suction valve installation location.
In a third aspect, the embodiment of the application also discloses an endoscope, which comprises the endoscope handle.
The utility model discloses a technical scheme can reach following beneficial effect:
according to the suction valve assembly disclosed by the embodiment of the application, the instrument channel is always communicated with the instrument tube, the instrument bolt is opened, and the treatment instrument can be inserted into a focus position in a human body through the instrument tube connecting piece and the instrument tube under the condition that the valve rod is at the first position; the instrument bolt is closed, the valve rod is pressed to be located at the second position, the containing cavity is communicated, the negative pressure hole is communicated with the instrument channel, the negative pressure mechanism extracts liquid in a human body, namely, the suction valve component can penetrate through the treatment instrument and can absorb the liquid in the human body, the instrument bolt is multifunctional, and space waste is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a valve seat according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of a valve seat of an embodiment of the present application;
FIG. 3 is a schematic structural view of a suction valve assembly according to an embodiment of the present application;
FIG. 4 is a cross-sectional view of a suction valve assembly of an embodiment of the present application;
FIG. 5 is a schematic structural view of an endoscope handle of an embodiment of the present application;
FIG. 6 is a cross-sectional view of an endoscope handle of an embodiment of the present application.
In the figure:
100-instrument tube connector, 110-instrument channel; 200-valve seat, 210-accommodating cavity, 211-valve rod mounting cavity, 2111-first cavity, 2112-second cavity, 212-instrument channel butt joint cavity, 220-negative pressure hole, 230-atmosphere communication hole, 240-sleeve joint part and 250-suction nozzle; 300-valve stem, 310-limiting part; 400-a first seal; 500-a second seal; 600-a reset member; 700-an instrument peg; 800-housing, 810-suction valve mounting location.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.
The suction valve assembly, the endoscope handle and the endoscope provided by the embodiments of the present application will be described in detail with reference to fig. 1 to 6 through specific embodiments and application scenarios thereof.
Referring to fig. 1-6, embodiments of the present application disclose a suction valve assembly that includes an instrument tube connector 100 and a valve assembly.
Specifically, the instrument tube connector 100 is provided with an instrument channel 110 penetrating along the axial direction thereof, the instrument channel 110 of the instrument tube connector 100 is communicated with the instrument tube, the proximal end of the instrument tube connector 100 is provided with an instrument plug 700, the instrument plug 700 is used for blocking the instrument channel 110 to avoid polluting the instrument tube, and in case that the instrument plug 700 is opened, a treatment instrument can be inserted into a focal site in a human body through the instrument channel 110 and the instrument tube.
The valve assembly comprises a valve seat 200 and a valve rod 300, wherein the valve seat 200 is provided with an accommodating cavity 210 which penetrates through along the axial direction of the valve seat and a negative pressure hole 220 communicated with the accommodating cavity 210, the negative pressure hole 220 is connected with a suction nozzle 250, and the suction nozzle 250 can be connected with a negative pressure mechanism for extracting liquid in a human body. In the embodiment of the present application, the accommodating cavity 210 communicates with the instrument channel 110 in a predetermined direction, the predetermined direction has an included angle with the axial direction of the instrument tube connector 100, the included angle may be a right angle or an acute angle, and the embodiment of the present application does not limit the specific size of the included angle.
The valve stem 300 is used for adjusting the communication state of the negative pressure hole 220 and the instrument channel 110, specifically, the valve stem 300 is movably disposed in the valve seat 200, the valve stem 300 at least has a first position and a second position, the negative pressure hole 220 is isolated from the instrument channel 110 when the valve stem 300 is at the first position, the negative pressure hole 220 is communicated with the instrument channel 110 when the valve stem 300 is at the second position, the negative pressure hole 220 is connected with a negative pressure mechanism, the liquid in the human body can be extracted through the instrument tube, the part of the instrument channel 110, the part of the accommodating cavity 210 and the suction nozzle 250 in sequence, and it can be understood that the instrument tube, the part of the instrument channel 110, the part of the accommodating cavity 210 and the suction nozzle 250 form a suction channel connected with the negative pressure mechanism.
In the suction valve assembly disclosed in the embodiment of the present application, the instrument channel 110 is always communicated with the instrument tube, the instrument plug 700 is opened, and the treatment instrument can be inserted into the lesion site in the human body through the instrument tube connector 100 and the instrument tube when the valve stem 300 is in the first position; the instrument plug 700 is closed, the valve stem 300 is pressed to be in the second position, the negative pressure hole 220 is communicated with the instrument channel 110 through the receiving cavity 210, that is, the suction channel is conducted, and the negative pressure mechanism extracts the liquid in the human body. In this application, suction valve subassembly can pass the treatment apparatus, can realize the absorption of human internal liquid again, and a thing is multi-purpose for suction valve subassembly when arranging in the endoscope handle, the endoscope handle only need set up a suction valve installation position, has improved the space utilization of endoscope handle.
In the embodiment of the present application, the receiving cavity 210 includes a valve stem mounting cavity 211 and an instrument channel docking cavity 212 axially distributed along the valve seat 200, the negative pressure hole 220 communicates with the valve stem mounting cavity 211, the instrument channel 110 communicates with the instrument channel docking cavity 212, and the suction valve assembly further includes a first sealing member 400, where the first sealing member 400 is configured to separate the valve stem mounting cavity 211 from the instrument channel docking cavity 212, that is, by changing a communication state of the valve stem mounting cavity 211 and the instrument channel docking cavity 212, a communication state of the negative pressure hole 220 and the instrument channel 110 is changed. In the present embodiment, with the valve stem 300 in the first position, the first seal 400 blocks the valve stem mounting cavity 211 and the instrument channel interface cavity 212, thereby blocking the negative pressure port 220 from the instrument channel 110.
In this embodiment, the first sealing element 400 may be a sealing ring, the first sealing element 400 is sleeved on the valve stem 300 and can be fixedly connected to the valve stem 300 by gluing, and the valve stem 300 moves, so as to change the position of the first sealing element 400.
In a further technical scheme, the valve rod 300 is provided with a limiting part 310, the first sealing element 400 is in limiting fit with the limiting part 310 to limit the axial movement of the first sealing element 400 along the valve rod 300, so that the stable connection between the first sealing element 400 and the valve rod 300 is realized, and the reliability of the sealing effect of the valve rod 300 at the first position is improved.
In an alternative embodiment, the position-limiting portion 310 may be an annular groove disposed on the valve stem 300, the first sealing element 400 is disposed in the annular groove, and in the axial direction of the valve stem 300, the distal end and the proximal end of the first sealing element 400 respectively abut against two opposite side walls of the annular groove, so as to limit the position of the first sealing element 400; this design not only limits the first seal 400, but also facilitates insertion of the front end of the valve stem 300 into the instrument channel docking cavity 212.
In another alternative embodiment, the position-limiting part 310 may be a position-limiting protrusion provided on the valve stem 300, and the distal end of the first sealing member 400 abuts against the position-limiting protrusion, so as to prevent the first sealing member 400 from being detached from the distal end of the valve stem 300.
In order to avoid the complication of intermittently starting the negative pressure mechanism, the negative pressure mechanism connected with the negative pressure hole 220 is in a normally open state, in order to ensure the stability of the operation of the negative pressure mechanism, the valve seat 200 is also provided with an atmosphere communication hole 230 communicated with the accommodating cavity 210, the atmosphere communication hole 230 is communicated with the atmosphere, under the condition that the valve rod 300 is in the first position, the negative pressure hole 220 is communicated with the atmosphere communication hole 230, and the negative pressure mechanism works to extract the atmosphere; when liquid in a human body needs to be extracted, the valve rod 300 is pressed to move to the second position, the atmosphere communication hole 230 is separated from the negative pressure hole 220, the instrument channel butt joint cavity 212 is communicated with the negative pressure hole 220, and the negative pressure mechanism works to extract the liquid in the human body.
When the negative pressure mechanism is opened, the on-way resistance between the negative pressure hole 220 and the atmosphere communication hole 230 is smaller than the on-way resistance between the negative pressure hole 220 and the distal end of the instrument tube, and if the negative pressure hole 220 and the atmosphere communication hole 230 are not blocked, the negative pressure mechanism is difficult to extract liquid in the human body. Therefore, in the present embodiment, the valve assembly further includes a second seal 500, and with the valve stem 300 in the second position, the second seal 500 blocks the negative pressure hole 220 and the atmosphere communication hole 230; under so setting up, negative pressure mechanism can normally extract human internal liquid, guarantees the stable use of the suction function of suction valve subassembly.
In an alternative embodiment, the valve rod installation cavity 211 comprises a first cavity 2111 and a second cavity 2112, the first cavity 2111, the second cavity 2112 and the aforementioned instrument channel docking cavity 212 are distributed along the axial direction of the valve seat 200, the atmosphere communication hole 230 is communicated with the first cavity 2111, the negative pressure hole 220 is communicated with the second cavity 2112, that is, the negative pressure hole 220 is communicated between the atmosphere communication hole 230 and the instrument channel docking cavity 212; in such a layout mode, the valve rod 300 can enable the negative pressure hole 220 to be communicated with the atmosphere communication hole 230 or the negative pressure hole 220 to be communicated with the instrument channel butt-joint cavity 212 only by moving along the axial direction of the valve seat 200, the movement mode is simple and reliable, and the resetting of the valve rod 300 is facilitated.
In the embodiment of the present application, in the axial direction of the valve seat 200, the opening size of the first cavity 2111 and the opening size of the instrument channel docking cavity 212 are both larger than the opening size of the second cavity 2112, so that a first step is formed between the instrument channel docking cavity 212 and the second cavity 2112, a second step is formed between the first cavity 2111 and the second cavity 2112, the first sealing element 400 abuts against the first step when the valve stem 300 is in the first position, and the second sealing element 500 abuts against the second step when the valve stem 300 is in the second position.
The suction valve assembly may further include a reset member 600, the reset member 600 connects the valve seat 200 and the valve rod 300, the reset member 600 may drive the valve rod 300 to switch from the second position to the first position, that is, the valve rod 300 may be reset to the first position by the driving of the reset member 600 without pumping the liquid in the human body, the negative pressure hole 220 communicates with the atmosphere communication hole 230, and the negative pressure mechanism pumps the atmosphere.
In an alternative embodiment, the reset member 600 includes a spring, one end of the spring abuts against the second step, the other end of the spring abuts against the valve rod 300, when the spring is in the initial state, the negative pressure hole 220 is communicated with the atmosphere communication hole 230, the negative pressure mechanism connected to the negative pressure hole 220 is in the idle state, when the valve rod 300 is pressed to move to the second position, the spring is compressed, and when the external force applied to the spring is removed, the spring resets and drives the valve rod 300 to move to the first position.
In further technical scheme, the second step is provided with along the cup joint portion 240 that the disk seat 200 near-end extends, and the spring cup joints in cup joint portion 240, and cup joint portion 240 can produce the guide effect to the deformation of spring, based on the existence of cup joint portion 240, can avoid the spring to incline or rock in valve rod installation cavity 211, improves spring reset's stability.
In another alternative embodiment, the resetting member 600 may include a first magnetic member and a second magnetic member, wherein the first magnetic member is disposed on the valve rod 300, the second magnetic member is disposed on the valve seat 200, and for example, the second magnetic member is disposed on the aforementioned second step, and the first magnetic member and the second magnetic member generate a magnetic repulsion force to drive the valve rod 300 to move from the second position to the first position, so as to cut off the communication state between the instrument channel docking cavity 212 and the negative pressure hole 220; the valve rod 300 is driven to move by adopting a non-contact driving mode of the first magnetic member and the second magnetic member, so that the situation that the spring is elastically fatigued can be avoided.
In the embodiment of the present application, the proximal end of the instrument channel 110 has an insertion section 111, and the aperture of the insertion section 111 gradually decreases in the insertion direction of the instrument in the instrument channel 110, so that the instrument can be conveniently inserted into the instrument channel 110, and the situation that the inserted instrument rocks in the instrument channel 110 can be avoided.
The embodiment of the application also provides an endoscope handle, and the endoscope handle comprises a shell 800 and the suction valve assembly, wherein the shell 800 is provided with a suction valve mounting position 810, and the suction valve assembly is arranged at the suction valve mounting position 810.
In the endoscope handle disclosed in the embodiment of the present application, based on the fact that both the instrument channel 110 and the accommodating cavity 210 are integrated into the suction valve assembly, the housing 800 may be provided with only one suction valve mounting location 810 for mounting the suction valve assembly, and the suction valve assembly is provided at the suction valve mounting location 810; under the condition, the space size of the endoscope handle can be reduced, the space utilization rate in the endoscope handle is improved, and the miniaturization development of the endoscope handle is facilitated.
In a further technical scheme, the endoscope handle can comprise a reusable section and a disposable section, and the suction valve assembly can be arranged on the disposable section of the endoscope handle, so that parts in contact with liquid in a human body can be discarded, the reusable section which is not in contact with the liquid in the human body is reserved, and the use cost of the endoscope handle is reduced.
The embodiment of the application also discloses an endoscope, and the endoscope comprises the endoscope handle.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (10)
1. A suction valve assembly, comprising:
an instrument tube connector (100), the instrument tube connector (100) being provided with an instrument channel (110) running through in an axial direction thereof;
the valve assembly comprises a valve seat (200) and a valve rod (300), the valve seat (200) is provided with an accommodating cavity (210) which penetrates through along the axial direction of the valve seat and a negative pressure hole (220) communicated with the accommodating cavity (210), the accommodating cavity (210) is communicated with the instrument channel (110) in a preset direction, and an included angle is formed between the preset direction and the axial direction of the instrument tube connecting piece (100);
the valve rod (300) is movably arranged in the accommodating cavity body (210), the valve rod (300) at least has a first position and a second position, the negative pressure hole (220) is isolated from the instrument passage (110) under the condition that the valve rod (300) is at the first position, and the negative pressure hole (220) is communicated with the instrument passage (110) under the condition that the valve rod (300) is at the second position.
2. The suction valve assembly as recited in claim 1, wherein the receiving chamber body (210) includes a valve stem mounting cavity (211) and an instrument channel docking cavity (212) axially distributed along the valve seat (200), the negative pressure hole (220) is communicated with the valve stem mounting cavity (211), and the instrument channel (110) is communicated with the instrument channel docking cavity (212);
the valve assembly further includes a first seal (400), the first seal (400) obstructing the valve stem mounting cavity (211) and the instrument channel interface cavity (212) with the valve stem (300) in the first position.
3. The attraction valve assembly of claim 2 wherein the valve stem (300) is provided with a stop portion (310), the first seal (400) being in stop-fit with the stop portion (310) to limit axial movement of the first seal (400) along the valve stem (300).
4. The suction valve assembly according to claim 1, wherein the valve seat (200) is further provided with an atmosphere communication hole (230) communicating with the accommodation chamber (210), the atmosphere communication hole (230) communicating with the negative pressure hole (220) in a case where the valve stem (300) is in the first position, and the atmosphere communication hole (230) blocking the negative pressure hole (220) in a case where the valve stem (300) is in the second position.
5. The suction valve assembly according to claim 4, further comprising a second seal (500), wherein the second seal (500) blocks the negative pressure hole (220) and the atmosphere communication hole (230) with the valve stem (300) in the second position.
6. The suction valve assembly according to any one of claims 1 to 5, further comprising a reset member (600), wherein the reset member (600) connects the valve seat (200) and the valve stem (300), and wherein the reset member (600) is capable of actuating the valve stem (300) from the second position to the first position.
7. Suction valve assembly according to any of the claims 1-5, characterized in that the proximal end of the instrument channel (110) has an insertion section (111), the bore of the insertion section (111) decreasing in the insertion direction of an instrument in the instrument channel (110).
8. The suction valve assembly according to any one of claims 1 to 5, further comprising an instrument plug (700), wherein the instrument plug (700) is connected to the instrument tube connector (100), and wherein the instrument plug (700) is adapted to seal off the proximal end of the instrument channel (110).
9. An endoscope handle comprising a housing (800) and a suction valve assembly according to any of claims 1 to 8, said housing (800) being provided with a suction valve mounting location (810), said suction valve assembly being provided at said suction valve mounting location (810).
10. An endoscope, comprising the endoscope handle of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221674967.4U CN217885961U (en) | 2022-06-30 | 2022-06-30 | Suction valve assembly, endoscope handle and endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221674967.4U CN217885961U (en) | 2022-06-30 | 2022-06-30 | Suction valve assembly, endoscope handle and endoscope |
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| Publication Number | Publication Date |
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| CN217885961U true CN217885961U (en) | 2022-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221674967.4U Active CN217885961U (en) | 2022-06-30 | 2022-06-30 | Suction valve assembly, endoscope handle and endoscope |
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| CN (1) | CN217885961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117442247A (en) * | 2023-12-19 | 2024-01-26 | 湖南省华芯医疗器械有限公司 | Suction valve, operation part and endoscope |
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2022
- 2022-06-30 CN CN202221674967.4U patent/CN217885961U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117442247A (en) * | 2023-12-19 | 2024-01-26 | 湖南省华芯医疗器械有限公司 | Suction valve, operation part and endoscope |
| CN117442247B (en) * | 2023-12-19 | 2024-03-15 | 湖南省华芯医疗器械有限公司 | Suction valve, operation part and endoscope |
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