CN219062474U - Suction valve for endoscope - Google Patents

Abstract

The utility model relates to an attraction valve for an endoscope, which can keep the whole attraction channel unobstructed so as to more easily suck out blood clots or tissues. The suction valve for the endoscope comprises a valve shell, a key and a valve core. The valve housing has a valve chamber, an air inlet communicating with an upper portion of the valve chamber, a suction outlet communicating with a middle portion of the valve chamber, and a suction inlet communicating with a lower portion of the valve chamber. The key is provided to the valve housing. The valve core is slidably arranged in the valve cavity, and is fixedly connected with the key, and the valve core is provided with a lateral outlet communicated with the air inlet and a lateral inlet communicated with the lateral outlet. When the key is not pressed to open the air intake port, the lateral inlet of the valve spool is sealed by the valve housing to break the passage between the suction outlet and the suction inlet. When the key is pressed to close the air inlet, the lateral outlet and the lateral inlet of the valve core are aligned with the suction outlet and the suction inlet of the valve housing, respectively, to conduct the passage between the suction outlet and the suction inlet.

Description

Suction valve for endoscope

Technical Field

The utility model relates to the technical field of endoscopes, in particular to an attraction valve for an endoscope.

Background

In recent years, with the rapid development of smart medical treatment, medical endoscopes have been increasingly used in the medical field, such as an endoscope applied to bronchi or abdominal cavities. It is well known that an endoscope handle is generally provided with a suction channel, and a suction valve is designed on the suction channel for sucking body fluid, blood clots, secretions and the like during operation.

At present, the suction valve adopted by the endoscope handle in the market is generally complex in internal structure, high in development cost and unsmooth in suction channel, and blockage can occur in actual use, and especially when blood clots or human tissues enter the suction channel, the normal operation is easily influenced. For example, chinese patent application No. 201110303858.1 discloses an aspiration button for an endoscope: when the operator does not press the suction button to be in a non-suction state, the plunger is closed, the suction outlet is connected with the suction device to form negative pressure, and the suction device sucks external gas at the moment; when an operator presses the suction button to be in a suction state, the air inlet of the silica gel cap is blocked, and the plunger integrally connected with the silica gel cap moves downwards, so that the suction inlet is opened, and at the moment, the body fluid, the blood clot, the secretion or the like is sucked by the suction device. However, the suction path of the conventional suction valve is closed in a non-suction state and is opened in a suction state, but the whole suction path has the problems of multiple bending and unsmooth due to the fact that the suction inlet and the plunger inlet cannot be aligned, and blood clots, sputum and other objects are easy to block, so that great inconvenience and potential safety hazards are brought to the use of the endoscope.

Disclosure of Invention

An advantage of the present utility model is to provide an endoscopic suction valve that can maintain the entire suction channel clear for easier suction of blood clots or tissue.

Another advantage of the present utility model is to provide an aspiration valve for an endoscope, wherein in an embodiment of the present utility model, the aspiration valve for an endoscope can form an unobstructed aspiration channel through cooperation of internal structural parts, so as to smoothly implement an aspiration function of the aspiration valve.

Another advantage of the present utility model is to provide an aspiration valve for an endoscope, wherein in one embodiment of the present utility model, the aspiration valve for an endoscope can have good air tightness when pressed so as to better aspirate internal fluid such as body fluid, blood clots, or secretions.

Another advantage of the present utility model is to provide an attractive valve for endoscopes in which expensive materials or complex structures are not required in the present utility model in order to achieve the above objects. The present utility model thus successfully and efficiently provides a solution that not only provides a simple suction valve for endoscopes, but also increases the practicality and reliability of the suction valve for endoscopes.

To achieve at least one of the above or other advantages and objects of the present utility model, there is provided an aspiration valve for an endoscope including:

the valve comprises a valve housing, a valve cavity, an air inlet, an attraction outlet and an attraction inlet, wherein the air inlet is communicated with the upper part of the valve cavity;

a key disposed at the valve housing; and

the valve core is slidably arranged in the valve cavity and fixedly connected with the key, and the valve core is provided with a lateral outlet communicated with the air inlet and a lateral inlet communicated with the lateral outlet; when the key is not pressed to open the air inlet, the lateral inlet of the valve body is sealed by the valve housing to break the passage between the suction outlet and the suction inlet; when the key is pressed to close the air inlet, the lateral outlet and the lateral inlet of the valve spool are aligned with the suction outlet and the suction inlet of the valve housing, respectively, to conduct a passage between the suction outlet and the suction inlet.

According to one embodiment of the present application, the valve core includes a hollow shaft fixedly connected to the key, a connecting leg extending longitudinally from the hollow shaft, and a blocking foot extending transversely from the connecting leg; the lateral outlet is formed in the side wall of the hollow shaft, and the lateral inlet is located between the hollow shaft and the plugging foot.

According to one embodiment of the application, the suction outlet and the suction inlet are located on opposite sides of the valve housing, respectively.

According to one embodiment of the present application, the valve housing comprises a housing surrounding the hollow shaft, a sleeve fitted around the housing, and a sealing ring disposed between the housing and the sleeve; the air inlet and the suction outlet are formed in the shell, and the suction inlet is formed in the shell.

According to one embodiment of the present application, the valve housing further comprises a sealing ring protruding inwardly from the sealing ring, the sealing ring being located between the suction inlet and the suction outlet; when the key is not pressed, the blocking foot is abutted against the sealing ring so as to close the lateral inlet; when the key is pressed, the blocking foot is away from the sealing ring to open the lateral inlet.

According to one embodiment of the present application, an upper end outer diameter of the hollow shaft is larger than a lower end outer diameter of the hollow shaft to form a limiting slope on an outer peripheral surface of the hollow shaft; the housing has a mating ramp that mates with the limit ramp to limit the downward movement of the hollow shaft relative to the housing.

According to one embodiment of the present application, the key comprises a key body fixedly connected to the hollow shaft and an elastic member located between the key body and the valve housing, wherein the elastic member is used for applying an elastic force to the key body away from the valve housing, so that the key body automatically returns to an original position under the action of the elastic member.

According to one embodiment of the application, the elastic piece is a silica gel cap, the upper end of the silica gel cap is sleeved on the key main body, and the lower end of the silica gel cap is sleeved on the valve casing.

According to one embodiment of the application, the silica gel cap is provided with a vent hole for communicating with the air inlet and an annular bulge for blocking the air inlet; the vent hole is set up in the lateral wall of silica gel cap, the annular protrusion certainly the upper end of silica gel cap is round the button main part downwardly extending for when the button main part is pressed, shutoff button main part with clearance between the valve casing.

According to one embodiment of the application, the key body is inserted into the axial opening of the hollow shaft; the upper end side wall of the hollow shaft is provided with a notch so as to form a channel on the hollow shaft, wherein the channel is used for communicating the suction outlet with the air inlet.

Drawings

FIG. 1 is a schematic view showing the structure of an aspiration valve for an endoscope according to an embodiment of the present utility model;

fig. 2 shows an exploded schematic view of an aspiration valve for an endoscope according to the above-described embodiment of the present utility model;

fig. 3 is a schematic cross-sectional view showing an aspiration valve for an endoscope according to the above embodiment of the present utility model in a non-aspiration state;

fig. 4 is a schematic cross-sectional view showing the suction valve for an endoscope according to the above embodiment of the present utility model in a suction state.

Description of the reference numerals: 1. suction valve for endoscope; 10. a valve housing; 100. a valve cavity; 101. an air inlet; 102. a suction outlet; 103. a suction inlet; 11. a housing; 110. matching with the inclined plane; 12. a casing; 13. a seal ring; 14. a seal ring; 20. a key; 21. a key main body; 22. an elastic member; 220. a silica gel cap; 221. a vent hole; 222. an annular protrusion; 30. a valve core; 301. a lateral outlet; 302. a lateral inlet; 31. a hollow shaft; 310. limiting inclined planes; 311. a notch; 32. a connecting leg; 33. the feet are plugged.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that when an element is referred to as being "disposed" or "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Considering that the suction valve adopted by the existing endoscope handle is complex in internal structure and high in development cost, and the whole suction path is difficult to block due to the fact that the suction inlet and the plunger inlet cannot be aligned and therefore the problems of repeated bending and unsmooth exist, blood clots, sputum and other objects are easy to block, and great inconvenience and potential safety hazards can be brought to the use of the endoscope. In order to solve the above problems, the present application proposes an aspiration valve for an endoscope, which not only can simplify the valve structure and reduce the cost of the product, but also can keep the whole aspiration channel unobstructed so as to more easily aspirate and draw out blood clots or tissues.

Specifically, referring to fig. 1 to 4, an embodiment of the present utility model provides an aspiration valve 1 for an endoscope, which can be applied to a medical endoscope so as to switch between an aspiration state and a non-aspiration state by operating the aspiration valve 1 for an endoscope.

More specifically, as shown in fig. 1, 3 and 4, the suction valve 1 for endoscope may include a valve housing 10, a key 20, and a valve body 30. The valve housing 10 has a valve chamber 100, an air inlet 101 communicating with an upper portion of the valve chamber 100, a suction outlet 102 communicating with a middle portion of the valve chamber 100, and a suction inlet 103 communicating with a lower portion of the valve chamber 100. The key 20 is provided to the valve housing 10. The valve core 30 is slidably arranged in the valve cavity 100, and the valve core 30 is fixedly connected to the key 20; the spool 30 has a lateral outlet 301 communicating with the intake port 101 and a lateral inlet 302 communicating with the lateral outlet 301. When the key 20 is not pressed to open the air inlet 101, the lateral inlet 302 of the valve body 30 is sealed by the valve housing 10 to break the passage between the suction outlet 102 and the suction inlet 103; when the key 20 is pressed to close the intake port 101, the lateral outlet 301 and the lateral inlet 302 of the valve body 30 are aligned with the suction outlet 102 and the suction inlet 103 of the valve housing 10, respectively, to communicate the passage between the suction outlet 102 and the suction inlet 103. It is to be understood that the upper, middle and lower parts mentioned in this application refer only to the relative upper and lower positional relationship along the pressing direction, that is, the key 20 of this application is pressed from top to bottom; in other words, the air inlet 101 is located above the suction outlet 102, and the suction inlet 103 is located below the suction outlet 102.

It is noted that, as shown in fig. 4, when the key 20 in the suction valve 1 for an endoscope is pressed, the lateral outlet 301 and the lateral inlet 302 of the valve core 30 are aligned with the suction outlet 102 and the suction inlet 103 of the valve housing 10, respectively, so that the passage between the suction outlet 102 and the suction inlet 103 is kept clear, avoiding multiple bending of the suction path, and facilitating easier suction of blood clots or tissues. It will be appreciated that the suction outlet 102 of the suction valve 1 for an endoscope of the present application is adapted to be connected to a negative pressure suction device to form a negative pressure environment at the suction outlet 102; when the key 20 is not pressed, the suction outlet 102 communicates with the air inlet 101, and the suction inlet 103 is closed so that the endoscope is in a non-suction state; when the key 20 is pressed, the suction outlet 102 communicates with the suction inlet 103, and the air inlet 101 is closed to place the endoscope in a suction state.

Illustratively, as shown in fig. 2, the valve core 30 may include a hollow shaft 31 fixedly coupled to the key 20, a connection leg 32 extending longitudinally from the hollow shaft 31, and a blocking foot 33 extending laterally from the connection leg 32; the lateral outlet 301 is open at the side wall of the hollow shaft 31, and the lateral inlet 302 is located between the hollow shaft 31 and the blocking foot 33.

Thus, as shown in fig. 4, when the key 20 is pressed, the hollow shaft 31 is driven by the key 20 to move downward so that the side outlet 301 is aligned with the suction outlet 102; at the same time, the blocking foot 33 is driven by the hollow shaft 31 and the connecting leg 32 to move downwards below the suction inlet 103, so that the lateral inlet 302 is aligned with the suction inlet 103, and the blocking foot 33 is prevented from being positioned in the passage between the suction inlet 103 and the suction outlet 102, thereby facilitating ensuring that the suction passage is unblocked and avoiding blockage. It will be appreciated that the lateral inlet 302 referred to herein is collectively defined by the hollow shaft 31, the connecting leg 32 and the shutoff leg 33; when the key 20 is not pressed, the blocking foot 33 is located above the suction inlet 103 so as to seal the lateral inlet 302 of the valve cartridge 30 by the valve housing 10.

Alternatively, as shown in fig. 3 and 4, the key 20 is provided to the valve housing 10 so as to be resettable; when the key 20 is pressed, the key 20 moves down to block the air inlet 101 of the valve housing 10; when the key 20 is released after being pressed, the key 20 can automatically return to the initial position to drive the blocking foot 33 of the valve core 30 to move upwards to the upper side of the suction inlet 103 while dredging the air inlet 101 of the valve housing 10, so that the lateral inlet 302 of the valve core 30 is sealed by the valve housing 10 to break the passage between the suction outlet 102 and the suction inlet 103.

Specifically, as shown in fig. 2 and 3, the key 20 may include a key body 21 fixedly coupled to the hollow shaft 31 and an elastic member 22 between the key body 21 and the valve housing 10, the elastic member 22 for applying an elastic force to the key body 21 away from the valve housing 10. Thus, when the key main body 21 is released after being pressed, the key main body 21 is automatically restored to the original position by the elastic member 22 to unblock the air inlet 101 of the valve housing 10.

More specifically, as shown in fig. 3 and 4, the elastic member 22 is preferably implemented as a silicone cap 220, an upper end of the silicone cap 220 is fitted to the key main body 21, and a lower end of the silicone cap 220 is fitted to the valve housing 10.

Alternatively, as shown in fig. 2 and 3, the silica gel cap 220 has a vent hole 221 for communicating with the air inlet 101 and an annular protrusion 222 for blocking the air inlet 101. As shown in fig. 3, a vent hole 221 is opened at a sidewall of the silica gel cap 220 for communicating the air inlet 101 of the valve housing 10 with the external space when the key 20 is not pressed or released, so that the air inlet path is conducted. As shown in fig. 4, an annular protrusion 222 extends downward from the upper end of the silica gel cap 220 around the key main body 21 for blocking a gap between the key main body 21 and the valve housing 10 when the key 20 is pressed to close the air inlet 101 so that the air inlet path is blocked. It will be appreciated that the silicone cap 220 of the present application has a certain elastic deformability such that the key 20 and the valve body 30 can be automatically moved up to the original position by the elasticity of the silicone cap 220 to open the air inlet 101 of the valve housing 10 and close the lateral inlet 302 of the valve body 30.

Alternatively, the key body 21 is inserted into an axial opening of the hollow shaft 31 and is fixed together by gluing. In particular, as shown in fig. 2 and 3, in order to ensure smooth communication between the suction outlet 102 and the air inlet 101, a notch 311 is formed in the upper end side wall of the hollow shaft 31 to form a passage on the hollow shaft 31 that communicates the suction outlet 102 with the air inlet 101, so as to increase the flow area of the passage between the suction outlet 102 and the air inlet 101.

It is noted that the suction outlet 102 and the suction inlet 103 of the valve housing 10 are preferably located on opposite sides of the valve housing 10, respectively, so that the passage between the suction outlet 102 and the suction inlet 103 is less likely to be bent, remains unobstructed, and is prevented from clogging.

Alternatively, as shown in fig. 2 and 3, the valve housing 10 may include a housing 11 surrounding a hollow shaft 31, a sleeve 12 fitted around the housing 11, and a sealing ring 13 provided between the housing 11 and the sleeve 12, the air inlet 101 and the suction outlet 102 being opened to the housing 11, and the suction inlet 103 being opened to the sleeve 12. The seal ring 13 serves to seal the gap between the housing 11 and the shell 12, facilitating the formation of a sealed and unobstructed attraction path in the attracted state. It will be appreciated that the sealing ring 13 of the present application may be nested outside the housing 11 and within the casing 12 so as to seal the gap between the housing 11 and the casing 12.

Optionally, as shown in fig. 3 and 4, the valve housing 10 further comprises a sealing ring 14 protruding inwardly from the sealing ring 13, the sealing ring 14 being located between the suction inlet 103 and the suction outlet 102. In this way, when the key 20 is not pressed, the blocking foot 33 of the valve core 30 abuts against the sealing ring 14, so as to seal the gap between the blocking foot 33 and the valve housing 10 by the sealing ring 14, so as to better close the lateral inlet 302 of the valve core 30; when the key 20 is pressed, the blocking foot 33 moves downward away from the gasket 14 to open the lateral inlet 302 such that the lateral inlet 302 is aligned with the suction inlet 103; when the key 20 is released, the blocking foot 33 again moves up against the sealing ring 14, so that the lateral inlet 302 of the valve cartridge 30 is closed.

Optionally, the seal ring 13 and the seal ring 14 of the present application may be integrally formed to form an integral seal, such as a seal silica gel, and the like, which is not described herein.

Alternatively, as shown in fig. 2, 3 and 4, the upper end outer diameter D of the hollow shaft 31 ₁ Greater than the outer diameter D of the lower end of the hollow shaft 31 ₂ To form on the outer peripheral surface of the hollow shaft 31A limit ramp 310; at the same time, the housing 11 of the valve housing 10 has a mating slope 110 that mates with the limit slope 310 to limit the downward movement position of the hollow shaft 31 relative to the housing 11; when the key 20 is pressed to make the limit inclined surface 310 of the hollow shaft 31 fit with the fit inclined surface 110 of the housing 11, the lateral inlet 302 and the lateral outlet 301 are just aligned with the suction inlet 103 and the suction outlet 102, respectively, so as to achieve a precise fit between the housing 11 and the hollow shaft 31.

To sum up, as shown in fig. 3, when the key main body 21 is not pressed, the sealing foot 33 of the valve core 30 is pressed and sealed with the sealing ring 14 under the elastic action of the silica gel cap 220, so as to close the lateral inlet 302 of the valve core 30; at the same time, a gap exists between the upper portion of the hollow shaft 31 of the valve body 30 and the housing 11 to communicate with the suction outlet 102, so that the external gas can first enter the silicone cap 220 and then enter the gap to be sucked from the suction outlet 102 to the negative pressure suction device, without performing the suction operation. As shown in fig. 4, when the key main body 21 is pressed, the silica gel cap 220 is compressed to close the air inlet 101 by blocking the gap between the housing 11 and the key main body 21 by the annular protrusion 222; at the same time, the blocking leg 33 of the valve core 30 moves downward under the driving of the key main body 21, the lateral inlet 302 of the valve core 30 is opened and just aligned with the suction inlet 103, and the lateral outlet 301 of the valve core 30 is aligned with the suction outlet 102, so that internal fluid (such as body fluid, secretion or organ fragments, etc.) can sequentially flow through the suction inlet 103, the lateral inlet 302, the lateral outlet 301 and the suction outlet 102 to be sucked to the negative pressure suction apparatus, performing a desired suction operation. As shown in fig. 3, when the pressed key main body 21 is released, the silicone cap 220 automatically rebounds to open the air inlet 101; at the same time, the blocking leg 33 of the valve core 30 moves upward under the elastic action of the silica gel cap 220, and is again compressed and sealed with the sealing ring 14, so as to close the lateral inlet 302 of the valve core 30 again, and stop executing the suction operation.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. Suction valve for endoscope, characterized by comprising:

the valve comprises a valve housing, a valve cavity, an air inlet, an attraction outlet and an attraction inlet, wherein the air inlet is communicated with the upper part of the valve cavity;

a key disposed at the valve housing; and

the valve core is slidably arranged in the valve cavity and fixedly connected with the key, and the valve core is provided with a lateral outlet communicated with the air inlet and a lateral inlet communicated with the lateral outlet; when the key is not pressed to open the air inlet, the lateral inlet of the valve body is sealed by the valve housing to break the passage between the suction outlet and the suction inlet; when the key is pressed to close the air inlet, the lateral outlet and the lateral inlet of the valve spool are aligned with the suction outlet and the suction inlet of the valve housing, respectively, to conduct a passage between the suction outlet and the suction inlet.

2. The suction valve for an endoscope according to claim 1, wherein the valve body comprises a hollow shaft fixedly connected to the key, a connecting leg extending longitudinally from the hollow shaft, and a blocking leg extending transversely from the connecting leg; the lateral outlet is formed in the side wall of the hollow shaft, and the lateral inlet is located between the hollow shaft and the plugging foot.

3. An aspiration valve for an endoscope according to claim 2 and wherein said aspiration outlet and said aspiration inlet are located on opposite sides of said valve housing, respectively.

4. The suction valve for an endoscope according to claim 2, wherein said valve housing comprises a housing surrounding said hollow shaft, a sleeve fitted around said housing, and a seal ring provided between said housing and said sleeve; the air inlet and the suction outlet are formed in the shell, and the suction inlet is formed in the shell.

5. The suction valve for an endoscope according to claim 4 and wherein said valve housing further comprises a sealing ring projecting inwardly from said sealing ring, said sealing ring being located between said suction inlet and said suction outlet; when the key is not pressed, the blocking foot is abutted against the sealing ring so as to close the lateral inlet; when the key is pressed, the blocking foot is away from the sealing ring to open the lateral inlet.

6. The suction valve for an endoscope according to claim 4, wherein an upper end outer diameter of the hollow shaft is larger than a lower end outer diameter of the hollow shaft to form a limiting slope on an outer peripheral surface of the hollow shaft; the housing has a mating ramp that mates with the limit ramp to limit the downward movement of the hollow shaft relative to the housing.

7. The suction valve for an endoscope according to any one of claims 2 to 6, wherein the key comprises a key body fixedly coupled to the hollow shaft and an elastic member interposed between the key body and the valve housing, the elastic member being adapted to apply an elastic force to the key body away from the valve housing so that the key body is automatically restored to an original position by the elastic member.

8. The suction valve for an endoscope according to claim 7, wherein the elastic member is a silicone cap, an upper end of the silicone cap is sleeved on the key body, and a lower end of the silicone cap is sleeved on the valve housing.

9. The suction valve for an endoscope according to claim 8, wherein the silicone cap has a vent hole for communicating with the air inlet port and an annular protrusion for blocking the air inlet port; the vent hole is set up in the lateral wall of silica gel cap, the annular protrusion certainly the upper end of silica gel cap is round the button main part downwardly extending for when the button main part is pressed, shutoff button main part with clearance between the valve casing.

10. The suction valve for an endoscope according to claim 7, wherein the key body is inserted into an axial opening of the hollow shaft; the upper end side wall of the hollow shaft is provided with a notch so as to form a channel on the hollow shaft, wherein the channel is used for communicating the suction outlet with the air inlet.

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