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 endoscopy

technical field

The utility model relates to the technical field of endoscopes, in particular to a suction valve for endoscopes.

Background technique

In recent years, with the rapid development of smart medical care, medical endoscopes have been used more and more in the medical field, such as endoscopes applied to bronchi or abdominal cavity. As we all know, the endoscope handle is usually provided with a suction channel, and a suction valve is designed on the suction channel, which is used to attract body fluids, blood clots or secretions, etc. during the operation.

At present, the suction valves used in endoscope handles on the market usually have complex internal structures, high development costs, and the suction channel is not smooth. In actual use, blockage may occur, especially when blood clots or human tissues enter the suction channel. It is easy to affect the normal operation of the operation. For example, the Chinese patent application No. 201110303858.1 discloses a suction button for endoscopes: when the operator does not press the suction button to be in a non-suction state, the plunger is closed, and the suction outlet is connected to a suction device to form a negative pressure. When the suction device sucks the outside air; when the operator presses the suction button to be in the suction state, the air inlet of the silicone cap will be blocked, and the plunger integrally connected with the silicone cap will move downwards, making the suction inlet When it is opened, the suction device attracts body fluids, blood clots or secretions, etc. However, although the suction path of the existing suction valve is closed in the non-suction state and open in the suction state, the entire suction path has multiple bends, Unobstructed, blood clots or sputum are easy to block, which will bring great inconvenience and safety hazards to the use of endoscopes.

Utility model content

An advantage of the present invention is to provide a suction valve for an endoscope, which can keep the entire suction channel unobstructed, so that it is easier to suck blood clots or tissues.

Another advantage of the present invention is to provide a suction valve for endoscope, wherein, in one embodiment of the present invention, the suction valve for endoscope can form a smooth suction channel through the cooperation of internal structural parts, so that The suction function of the suction valve is realized smoothly.

Another advantage of the present utility model is to provide a suction valve for endoscope, wherein, in an embodiment of the present utility model, the suction valve for endoscope can have good airtightness when pressed, so as to better effectively attracts internal fluids such as bodily fluids, blood clots, or secretions.

Another advantage of the present invention is to provide a suction valve for endoscopes, wherein in order to achieve the above object, the present invention does not need to use expensive materials or complicated structures. Therefore, the utility model successfully and effectively provides a solution, not only providing a simple suction valve for endoscope, but also increasing the practicability and reliability of the suction valve for endoscope.

In order to achieve at least one of the above advantages or other advantages and purposes of the utility model, the utility model provides a suction valve for endoscopes, including:

a valve casing, the valve casing has a valve cavity, an air inlet communicating with the upper part of the valve cavity, a suction outlet communicating with the middle part of the valve cavity, and a suction inlet communicating with the lower part of the valve cavity;

a button, the button is arranged on the valve housing; and

A spool, the spool is slidably arranged in the valve cavity, and the spool is fixed to the button, the spool has a side outlet communicated with the air inlet and connected to the The side inlet connected to the side outlet; when the button is not pressed to open the air inlet, the side inlet of the spool is sealed by the valve housing to disconnect the suction outlet and The passage between the suction inlets; when the button is pressed to close the air inlet, the side outlet and the side inlet of the valve core are respectively aligned with the a suction outlet and the suction inlet to conduct a passage between the suction outlet and the suction inlet.

According to an embodiment of the present application, the valve core includes a hollow shaft fixed to the button, a connecting leg extending longitudinally from the hollow shaft, and a blocking foot extending transversely from the connecting leg; The outlet is opened on the side wall of the hollow shaft, and the side inlet is located between the hollow shaft and the plugging foot.

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

According to an embodiment of the present application, the valve casing includes a casing surrounding the hollow shaft, a casing fitted on the casing, and a sealing ring arranged between the casing and the casing; The air port and the suction outlet are opened in the casing, and the suction inlet is opened in the casing.

According to an embodiment of the present application, the valve casing further includes a sealing ring protruding inward from the sealing ring, and the sealing ring is located between the suction inlet and the suction outlet; When pressed, the blocking foot leans against the sealing ring to close the side inlet; when the button is pressed, the blocking foot is away from the sealing ring to open the side inlet .

According to an embodiment of the present application, the outer diameter of the upper end of the hollow shaft is larger than the outer diameter of the lower end of the hollow shaft, so as to form a limiting slope on the outer peripheral surface of the hollow shaft; A matching mating slope is used to limit the downward movement of the hollow shaft relative to the housing.

According to an embodiment of the present application, the key includes a key body fixed to the hollow shaft and an elastic member located between the key body and the valve housing, and the elastic member is used to tighten the key body. Apply an elastic force away from the valve housing, so that the key body automatically returns to the original position under the action of the elastic member.

According to an embodiment of the present application, the elastic member is a silicone cap, the upper end of the silicone cap is sleeved on the key body, and the lower end of the silicone cap is sleeved on the valve housing.

According to an embodiment of the present application, the silica gel cap has a vent hole for communicating with the air inlet and an annular protrusion for blocking the air inlet; the vent hole is opened in the silica gel cap The side wall of the button, the annular protrusion extends downward from the upper end of the silicone cap around the main body of the key, and is used to block the gap between the main body of the key and the valve housing when the main body of the key is pressed. Clearance.

According to an embodiment of the present application, the key body is plugged into the axial opening of the hollow shaft; a notch is opened on the side wall of the upper end of the hollow shaft to form a connection between the suction outlet and the hollow shaft. The channel communicated with the air inlet.

Description of drawings

Fig. 1 is a schematic structural view of an endoscope suction valve according to an embodiment of the present invention;

Fig. 2 shows the explosion schematic diagram of the suction valve for endoscope according to the above-mentioned embodiment of the utility model;

Fig. 3 shows a schematic cross-sectional view of the endoscope suction valve in a non-suction state according to the above-mentioned embodiment of the present invention;

Fig. 4 shows a schematic cross-sectional view of the suction valve for endoscopes in a suction state according to the above-mentioned embodiment of the present utility model.

Explanation of symbols: 1, suction valve for endoscope; 10, valve casing; 100, valve cavity; 101, air inlet; 102, suction outlet; 103, suction inlet; 11, shell; ; 13, sealing ring; 14, sealing ring; 20, button; 21, button main body; 22, elastic piece; 220, silica gel cap; Exit; 302, side entrance; 31, hollow shaft; 310, limit slope; 311, notch; 32, connecting leg; 33, plugging foot.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that when a component is referred to as being "disposed on" or "installed on" another component, it may be directly on another component or there may also be an intervening component. When a component is said to be "set on" another component, it may be set directly on the other component or there may be an intervening component at the same time. When a component is said to be "fixed" to another component, it may be directly fixed to the other component or there may be an intervening component at the same time.

Those skilled in the art should understand that, in the disclosure of the present utility model, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present invention. The novel and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, so the above terms should not be construed as limiting the utility model.

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

Considering that the suction valve used in the existing endoscope handle is not only complex in internal structure and high in development cost, but also has multiple bending and unsmooth problems in the entire suction path due to the misalignment of the suction inlet and the plunger inlet, resulting in blood clots Or sputum and other things are easy to block, which will bring great inconvenience and potential safety hazards to the use of endoscopes. In order to solve the above problems, the present application proposes a suction valve for endoscope, which can not only simplify the valve structure and reduce product cost, but also keep the entire suction channel unobstructed, so that blood clots or tissues can be sucked more easily.

Specifically, referring to the accompanying drawings 1 to 4, an embodiment of the present invention provides a suction valve 1 for endoscopes, which can be applied to medical endoscopes, so that by operating the suction valve 1 for endoscopes The medical endoscope switches between a suction state and a non-suction state.

More specifically, as shown in FIG. 1 , FIG. 3 and FIG. 4 , the endoscope suction valve 1 may include a valve housing 10 , a button 20 and a valve core 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 button 20 is disposed on the valve casing 10 . The valve core 30 is slidably arranged in the valve cavity 100, and the valve core 30 is fixed to the button 20; the valve core 30 has a side outlet 301 communicating with the air inlet 101 and a side inlet 302 communicating with the side outlet 301 . When the button 20 was not pressed to open the air inlet 101, the side inlet 302 of the spool 30 was sealed by the valve housing 10 to disconnect the passage between the suction outlet 102 and the suction inlet 103; when the button 20 was pressed to close When the air inlet 101 is used, the side outlet 301 and the side inlet 302 of the valve core 30 are respectively aligned with the suction outlet 102 and the suction inlet 103 of the valve casing 10 to conduct the passage between the suction outlet 102 and the suction inlet 103 . It can be understood that the upper part, middle part and lower part mentioned in this application only refer to the relative up-down positional relationship along the pressing direction, that is to say, the key 20 of this application is pressed from top to bottom; The port 101 is located above the suction outlet 102 , and the suction inlet 103 is located below the suction outlet 102 .

It is worth noting that, as shown in FIG. 4 , when the button 20 in the suction valve 1 for endoscope of the present application is pressed, the side outlet 301 and the side inlet 302 of the valve core 30 are respectively aligned with the suction outlet of the valve housing 10 102 and the suction inlet 103, so that the passage between the suction outlet 102 and the suction inlet 103 remains unobstructed, avoiding multiple bends in the suction path, and helping to more easily suck blood clots or tissues. It can be understood that the suction outlet 102 in the suction valve 1 for endoscope of the present application is suitable for connecting a negative pressure suction device to form a negative pressure environment at the suction outlet 102; when the button 20 is not pressed, the suction outlet 102 and The air inlet 101 communicates, and the suction inlet 103 is closed, so that the endoscope is in a non-suction state; and when the button 20 is pressed, the suction outlet 102 communicates with the suction inlet 103, and the air inlet 101 is closed, so that the endoscope is in a non-suction state; The mirror is attracted.

Exemplarily, as shown in FIG. 2 , the spool 30 may include a hollow shaft 31 fixed to the button 20, a connecting leg 32 extending longitudinally from the hollow shaft 31, and a blocking foot 33 extending transversely from the connecting leg 32; The outlet 301 is opened on the side wall of the hollow shaft 31 , and the side inlet 302 is located between the hollow shaft 31 and the plugging foot 33 .

In this way, as shown in Figure 4, when the button 20 is pressed, the hollow shaft 31 is driven by the button 20 to move down, so that the side outlet 301 is aligned with the suction outlet 102; The legs 32 are driven to move down to the bottom of the suction inlet 103, so that the side inlet 302 is aligned with the suction inlet 103, preventing the blocking foot 33 from being located in the passage between the suction inlet 103 and the suction outlet 102, so as to ensure the smooth flow of the suction passage and avoid blockage . It can be understood that the side inlet 302 mentioned in this application is surrounded by the hollow shaft 31, the connecting leg 32 and the blocking foot 33; when the key 20 is not pressed, the blocking foot 33 is located at the suction inlet 103 above, so as to seal the side inlet 302 of the valve core 30 through the valve casing 10 .

Optionally, as shown in FIG. 3 and FIG. 4 , the button 20 is resettablely arranged on the valve casing 10; when the button 20 is pressed, the button 20 will move down to block the air inlet 101 of the valve casing 10; And when the button 20 is released after being pressed, the button 20 can automatically return to the initial position, so as to unclog the air inlet 101 of the valve housing 10, and drive the blocking foot 33 of the valve core 30 to move up to the suction inlet 103 above, so that the side inlet 302 of the spool 30 is sealed by the valve casing 10 to disconnect the passage between the suction outlet 102 and the suction inlet 103 .

Specifically, as shown in FIGS. 2 and 3 , the key 20 may include a key body 21 fixed to the hollow shaft 31 and an elastic member 22 located between the key body 21 and the valve housing 10. The elastic member 22 is used to tighten the key body. 21 exerts an elastic force away from the valve housing 10. In this way, when the button main body 21 is released after being pressed, the button main body 21 automatically returns to the original position under the action of the elastic member 22 to unclog the air inlet 101 of the valve housing 10 .

More specifically, as shown in FIGS. 3 and 4 , the elastic member 22 is preferably implemented as a silicone cap 220 , the upper end of the silicone cap 220 fits on the key body 21 , and the lower end of the silicone cap 220 fits on the valve housing 10 .

Optionally, as shown in FIGS. 2 and 3 , the silicone 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 Figure 3, the vent hole 221 is opened on the side wall of the silicone cap 220, and is used to connect the air inlet 101 of the valve housing 10 with the external space when the button 20 is not pressed or released, so that the air inlet path is turned on. As shown in Figure 4, the annular protrusion 222 extends downward from the upper end of the silicone cap 220 around the key body 21, and is used to close the gap between the key body 21 and the valve housing 10 when the key 20 is pressed. The air inlet 101, so that the air intake path is blocked. It can be understood that the silicone cap 220 of the present application has a certain elastic deformation capacity, so that the button 20 and the valve core 30 can automatically move up to the original position under the elastic action of the silicone cap 220 to open the air inlet of the valve housing 10 101, and close the side inlet 302 of the spool 30.

Optionally, the key body 21 is plugged into the axial opening of the hollow shaft 31 and fixed together by gluing. In particular, as shown in FIGS. 2 and 3 , in order to ensure smooth communication between the suction outlet 102 and the air inlet 101 , the upper end sidewall of the hollow shaft 31 is provided with a notch 311 to form a suction outlet on the hollow shaft 31 . 102 communicates 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 worth noting that the suction outlet 102 and the suction inlet 103 of the valve housing 10 are preferably respectively located on opposite sides of the valve housing 10, so that the passage between the suction outlet 102 and the suction inlet 103 reduces bending, keeps unobstructed, and avoids clogging .

Optionally, as shown in FIGS. 2 and 3 , the valve casing 10 may include a casing 11 surrounding the hollow shaft 31 , a casing 12 fitted on the casing 11 , and a sealing ring 13 disposed between the casing 11 and the casing 12 , the air inlet 101 and the suction outlet 102 are opened in the casing 11 , and the suction inlet 103 is opened in the casing 12 . The sealing ring 13 is used to seal the gap between the shell 11 and the casing 12, so as to form a sealed and unobstructed suction channel in a suction state. It can be understood that the sealing ring 13 of the present application can be fitted outside the casing 11 and located inside the casing 12 so as to seal the gap between the casing 11 and the casing 12 .

Optionally, as shown in FIGS. 3 and 4 , the valve casing 10 further includes a sealing ring 14 protruding inward from the sealing ring 13 , and the sealing ring 14 is located between the suction inlet 103 and the suction outlet 102 . In this way, when the key 20 is not pressed, the plugging foot 33 of the valve core 30 is against the seal ring 14, so as to seal the gap between the plugging leg 33 and the valve housing 10 through the seal ring 14, so as to better close the valve. The side inlet 302 of the core 30; when the button 20 is pressed, the blocking pin 33 moves down to move away from the sealing ring 14 to open the side inlet 302, so that the side inlet 302 is aligned with the suction inlet 103; when the button 20 is pressed When loosened, the blocking foot 33 moves up again to abut against the sealing ring 14, so that the side inlet 302 of the valve core 30 is closed.

Optionally, the sealing ring 13 and the sealing ring 14 of the present application can be integrally formed to form an integral sealing member, such as sealing silicone, etc., which will not be repeated in the present application.

Optionally, as shown in FIG. 2 , FIG. 3 and FIG. 4 , the outer diameter D ₁ of the upper end of the hollow shaft 31 is larger than the outer diameter D ₂ of the lower end of the hollow shaft 31 , so as to form a limiting slope 310 on the outer peripheral surface of the hollow shaft 31 ; At the same time, the casing 11 of the valve casing 10 has a matching slope 110 matched with the limiting slope 310 to limit the downward movement of the hollow shaft 31 relative to the casing 11; when the button 20 is pressed, the limiting slope of the hollow shaft 31 When 310 fits on the mating slope 110 of the housing 11 , the side inlet 302 and the side outlet 301 are just aligned with the suction inlet 103 and the suction outlet 102 respectively, so as to realize the precise fit between the housing 11 and the hollow shaft 31 .

To sum up, as shown in FIG. 3 , when the main body 21 of the button is not pressed, the sealing foot 33 of the valve core 30 is compressed and sealed with the sealing ring 14 under the elastic action of the silicone cap 220 to close the side inlet of the valve core 30 302; At the same time, there is a gap between the upper part of the hollow shaft 31 of the spool 30 and the shell 11 to communicate with the suction outlet 102, so that the external air can first enter the silica gel cap 220 and then enter the gap to be sucked from the suction outlet 102 Negative pressure suction device, does not perform suction work. As shown in Figure 4, when the key body 21 is pressed, the silicone cap 220 is compressed to seal the gap between the shell 11 and the key body 21 through the annular protrusion 222, and close the air inlet 101; at the same time, the valve core The blocking foot 33 of 30 moves downward under the drive of the key body 21, the side inlet 302 of the spool 30 is opened, and just aligned with the suction inlet 103, and the side outlet 301 of the spool 30 is aligned with the suction outlet 102, so that the internal fluid (such as human body fluid, secretions or organ fragments, etc.) can flow through the suction inlet 103, the side inlet 302, the side outlet 301 and the suction outlet 102 in order to be sucked into the negative pressure suction device, and the Attract jobs as needed. As shown in Figure 3, when the pressed key body 21 is released, the silicone cap 220 automatically rebounds to open the air inlet 101; Move upwards, press and seal with the sealing ring 14 again, to close the side inlet 302 of the valve core 30 again, and stop performing the suction operation.

The technical features of the above embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered to be within the range described in this specification.

The above examples only express several implementations of the utility model, and the description thereof is more specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. A suction valve for endoscopy, characterized in that it comprises: a valve casing, the valve casing has a valve cavity, an air inlet communicating with the upper part of the valve cavity, a suction outlet communicating with the middle part of the valve cavity, and a suction inlet communicating with the lower part of the valve cavity; a button, the button is arranged on the valve housing; and A spool, the spool is slidably arranged in the valve cavity, and the spool is fixed to the button, the spool has a side outlet communicated with the air inlet and connected to the The side inlet connected to the side outlet; when the button is not pressed to open the air inlet, the side inlet of the spool is sealed by the valve housing to disconnect the suction outlet and The passage between the suction inlets; when the button is pressed to close the air inlet, the side outlet and the side inlet of the valve core are respectively aligned with the a suction outlet and the suction inlet to conduct a passage between the suction outlet and the suction inlet. 2. The suction valve for endoscope according to claim 1, characterized in that, the valve core comprises a hollow shaft affixed to the button, a connecting leg extending longitudinally from the hollow shaft, and a connecting leg extending from the connecting leg. A laterally extending blocking foot; the lateral outlet is opened on the side wall of the hollow shaft, and the lateral inlet is located between the hollow shaft and the blocking foot. 3 . The suction valve for endoscope according to claim 2 , wherein the suction outlet and the suction inlet are respectively located on opposite sides of the valve housing. 4 . 4. The suction valve for endoscope according to claim 2, characterized in that, the valve housing comprises a housing surrounding the hollow shaft, a casing sleeved on the housing, and a sleeve disposed between the housing and the housing. A sealing ring between the casings; the air inlet and the suction outlet are opened in the casing, and the suction inlet is opened in the casing. 5. The suction valve for endoscope according to claim 4, wherein the valve casing further comprises a sealing ring protruding inward from the sealing ring, and the sealing ring is located between the suction inlet and the suction inlet. Between the suction outlets; when the button is not pressed, the blocking foot is against the sealing ring to close the side inlet; when the button is pressed, the blocking foot is away from the the sealing ring to open the side inlet. 6. The suction valve for endoscope according to claim 4, characterized in that, the outer diameter of the upper end of the hollow shaft is larger than the outer diameter of the lower end of the hollow shaft, so as to form a limiting slope on the outer peripheral surface of the hollow shaft ; The housing has a mating slope matched with the limiting slope to limit the downward movement of the hollow shaft relative to the housing. 7. The suction valve for endoscope according to any one of claims 2 to 6, characterized in that, the button comprises a button body fixed to the hollow shaft and a button located between the button body and the valve housing. The elastic member is used to exert an elastic force on the key body away from the valve housing, so that the key body automatically returns to the original position under the action of the elastic member. 8. The suction valve for endoscope according to claim 7, wherein the elastic member is a silicone cap, the upper end of the silicone cap is sleeved on the button body, and the lower end of the silicone cap is sleeved on the button body. Valve housing. 9. The suction valve for endoscope according to claim 8, wherein the silicone cap has a vent hole for communicating with the air inlet and an annular protrusion for blocking the air inlet; The air hole is opened on the side wall of the silicone cap, and the annular protrusion extends downward from the upper end of the silicone cap around the key body for blocking when the key body is pressed. The gap between the key body and the valve housing. 10. The suction valve for endoscope according to claim 7, characterized in that, the key body is inserted into the axial opening of the hollow shaft; the upper side wall of the hollow shaft is provided with a gap, so that A passage connecting the suction outlet with the air inlet is formed on the hollow shaft.

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