CN216366110U

CN216366110U - Suction button, suction valve assembly and endoscope

Info

Publication number: CN216366110U
Application number: CN202122608515.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Hunan Vathin Medical Instrument Co Ltd
Current assignee: Hunan Vathin Medical Instrument Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-26
Anticipated expiration: 2031-10-28
Also published as: WO2023071852A1

Abstract

The utility model is suitable for the technical field of endoscopes and provides a suction button, a suction valve assembly and an endoscope. The attraction button is of a hollow structure and comprises an elastic main body, one end of the elastic main body is a pressing end, and the other end of the elastic main body is a fixed end; a first sealing part is arranged on the inner wall of the elastic main body close to the pressing end, and a second sealing part is arranged on the inner wall of the elastic main body close to the fixed end; when the attraction button is axially pressed and deformed, the first sealing part is in interference fit with the second sealing part. The attraction button has the functions of elastic reset and sealing; and the attraction button in the utility model is preferably made of silica gel or rubber material which has no toxic or side effect on human body and is not easy to corrode, thereby avoiding secondary infection to patients.

Description

Suction button, suction valve assembly and endoscope

Technical Field

The present invention relates to a suction button, and more particularly, to a suction button, a suction valve assembly, and an endoscope.

Background

At present, a suction valve is provided in a handle portion of an endoscope for general surgery, a suction port is provided in a distal end of an insertion portion, a suction pipe communicating with the suction port is provided in the insertion portion, and communication or disconnection between the suction port and an external negative pressure source is realized by the action of the suction valve. Specifically, when the pressing operation is released, the piston in the suction valve returns to its original position by the action of the spring, and the communication between the suction port and the negative pressure source conduit is cut off to stop the suction from the suction port.

In the prior art, the piston of the suction valve is usually reset through an internal spring, the suction valve with the structure has complex structural characteristics, and the spring can rust after the reset spring is contacted with liquid leaked from the valve body, so that infection is easily caused during secondary use.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, a first aspect of the present invention provides an attraction button, which has a hollow structure and includes an elastic body, wherein one end of the elastic body is a pressing end, and the other end of the elastic body is a fixing end;

a first sealing part is arranged on the inner wall of the elastic main body close to the pressing end, and a second sealing part is arranged on the inner wall of the elastic main body close to the fixed end; when the attraction button is axially pressed and deformed, the first sealing part is in interference fit with the second sealing part.

Further, first sealing is for to stiff end axial extension's protruding structure, the second sealing is for to press end axial extension's protruding structure, when attract button axial pressurized deformation, first sealing embedding the inboard of second sealing.

Further, first sealing is for to stiff end axial extension's protruding structure, the second sealing is the opening orientation the groove structure of first sealing, works as when attracting button axial pressurized deformation, first sealing embedding in the second sealing.

Furthermore, the pressing end is provided with a pressing part used for receiving the extrusion force of the outside on the suction button.

Further, the fixed end is provided with a fixed part, and the fixed part is used for fixing the attraction button on other components.

Further, the stiff end is equipped with the edge attract the spacing portion of the axial direction extension of button, spacing portion is a word groove structure.

Furthermore, a plurality of exhaust parts are uniformly arranged on the suction button, the exhaust parts penetrate through the suction button, and the exhaust parts are located between the first sealing part and the second sealing part.

Further, the attraction button is made of a silica gel material.

In a second aspect of the present invention, there is provided a suction valve assembly including a suction valve main body and the suction button described above, wherein the suction button is detachably attached to the suction valve main body.

In a third aspect of the present invention, there is provided an endoscope comprising a handle portion on which the above-described suction valve assembly is provided, and an insertion portion.

Compared with the prior art, the utility model has the beneficial technical effects that:

1) compared with the scheme that the piston is reset by using a spring in the prior art, the suction button has the advantages that the first sealing part and the second sealing part are arranged on the inner wall of the elastic main body of the suction button, and the suction button has the elastic resetting and sealing functions through the interference fit of the first sealing part and the second sealing part; and the attraction button in the utility model is preferably made of silica gel or rubber material which has no toxic or side effect on human body and is not easy to corrode, thereby avoiding secondary infection to patients.

2) According to the utility model, the limiting part is arranged at the fixed end, so that the phenomena of curling, deformation and the like in the installation process of the suction button can be avoided, and the suction button is positioned in the circumferential direction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of an attraction button;

FIG. 2 is a schematic view of another angle configuration of the attraction button of FIG. 1;

FIG. 3 is a cross-sectional view of the attract button shown in FIG. 1;

FIG. 4 is a cross-sectional view of an attraction button in another embodiment of the utility model;

FIG. 5 is a schematic partial cross-sectional view of an attraction button in accordance with another embodiment of the utility model;

FIG. 6 is a schematic view of a suction valve according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of the suction valve shown in FIG. 6;

in the figure: 1-elastic body, 11-first seal, 12-second seal, 13-vent, 14-groove, 2-press end, 21-press part, 3-fixed end, 31-fixed part, 4-suction valve body, 5-piston rod.

Detailed Description

The following description provides many different embodiments, or examples, for implementing different features of the utility model. The particular examples set forth below are illustrative only and are not intended to be limiting.

Endoscopes are a common medical device. In the prior art, a conventional endoscope includes an operation portion (also referred to as a handle) and an insertion portion. The handle part is used for controlling the insertion part to enter a human body, and the orientation of the insertion part is controlled through the handle part, so that an image of a focus part is provided for a doctor.

Meanwhile, a suction valve is often arranged on the handle part of the endoscope, and a suction button is mainly used for controlling the suction function of the distal end of the insertion part, so that liquid, debris and the like at the focus part are sucked out of the body, and the observation definition of the endoscope image is improved. The endoscope insertion portion is provided with a suction line communicating with the suction port of the distal end face, a suction valve for communicating the suction line with an externally connected negative pressure source line, the negative pressure source includes a suction pump, a negative pressure machine, and the like, and a button of the suction device is pressed during surgery to communicate the suction port with the negative pressure source line to suck the suction port, thereby sucking the body fluid of the internal diseased tissue and the excised diseased tissue, and when the pressing operation is released, the communication between the suction line and the negative pressure source line is cut off to stop the suction from the suction port.

In the endoscope suction valve in the prior art, the piston of the suction valve is usually reset through an internal spring, on one hand, the suction valve with the structure has complex structural characteristics, and on the other hand, after the reset spring is contacted with liquid leaked from the valve body, the spring can rust, and infection is very easily caused during secondary use.

In view of this, an embodiment of the present invention, as shown in fig. 1 to 5, provides an attraction button, which is a hollow structure and includes an elastic body 1, one end of the elastic body 1 is a pressing end 2, and the other end is a fixing end 3;

a first sealing part 11 is arranged on the inner wall of the elastic main body 1 close to the pressing end 2, and a second sealing part 12 is arranged on the inner wall of the elastic main body 1 close to the fixed end 3; when the suction button is deformed by being pressed in the axial direction, the first seal portion 11 is in interference fit with the second seal portion 12.

In the above solution, the elastic body 1 is a body portion of the attraction button, and the body portion of the attraction button is made of elastic material and has elasticity. That is, the elastic body 1 is deformed in the axial direction when pressed in the axial direction, and when the pressing force disappears, the elastic body 1 is restored to its original shape by its own elastic force.

The pressing end 2 is used for bearing the extrusion force which enables the suction button to generate axial deformation, specifically, if the piston rod 5 abuts against the pressing end 2, when the piston rod 5 is pressed in the axial direction, the piston rod 5 transmits the extrusion force to the pressing end 2, and the pressing end 2 overcomes the self elasticity of the suction button after being pressed, so that the suction button generates axial deformation.

The fixed end 3 is used for fixing the attraction button on other components and is matched with other components for use. As in the suction valve, the fixed end 3 of the elastic body 1 may be fixedly connected to the suction valve body 4.

When the attraction button is deformed in the axial direction, as shown in fig. 1, the first sealing portion 11 near the upper end (i.e., the pressing end 2) of the attraction elastic body 1 moves near the second sealing portion 12, and an interference fit is generated between the contact surfaces of the first sealing portion 11 and the second sealing portion 12, so that the contact surfaces of the first sealing portion 11 and the second sealing portion 12 are tightly attached to each other.

Preferably, the suction button is used in combination with a suction valve.

In the prior art, the suction valve usually adopts a return spring form to realize the return of a piston in the valve, but the spring can be corroded and rusted under the action of outside air and tissue fluid substances leaked from the suction valve, so that the suction valve is very easy to cause secondary infection to a human body.

As a preferable mode, the suction button may be attached to the suction valve instead of the spring; the advantages of this are: the resetting effect on the piston rod 5 can be realized due to the self elastic action of the attraction button; meanwhile, when the suction button is pressed axially, the first sealing part 11 and the second sealing part 12 in the suction button are in interference fit, so that the sealing effect on the suction channel in the suction valve can be realized.

Compared with the prior art, in the scheme of realizing piston reset by using a spring, in the embodiment, the first sealing part 11 and the second sealing part 12 are arranged on the inner wall of the elastic main body 1 of the suction button, and the suction button has elastic reset and sealing functions through interference fit of the first sealing part 11 and the second sealing part 12; and the attraction button in this embodiment is made of an elastic material, preferably silica gel or a rubber material that has no toxic or side effect on the human body and is not easily corroded, 1) thereby avoiding secondary infection to the patient.

In an embodiment of the present invention, as shown in fig. 3 and 4, the first sealing portion 11 is an annular protrusion structure extending axially toward the fixed end 3, the second sealing portion 12 is an annular protrusion structure extending axially toward the pressing end 2, and the first sealing portion 11 is fitted inside the second sealing portion 12 when the suction button is deformed by being pressed axially.

In the above solution, when the pressing end 2 of the elastic body 1 is pressed in the axial direction, the first sealing portion 11 is close to the second sealing portion 12, and the first sealing portion 11 is embedded inside the second sealing portion 12, so that the outer side surface of the first sealing portion 11 is in interference fit with the inner side surface of the second sealing portion 12. The outer diameter of the protruding structure of the first sealing portion 11 is slightly larger than the inner diameter of the protruding structure of the second sealing portion 12. Preferably, the difference between the outer diameter of the convex structure of the first sealing part 11 and the inner diameter of the convex structure of the second sealing part 12 is 0.1-0.2 mm.

When in use, because the first sealing part 11 and the second sealing part 12 both have elasticity, when the convex structure of the first sealing part 11 enters the inner side of the convex structure of the second sealing part 12, the two are slightly deformed; after the convex structure of the first sealing part 11 enters the inner side of the convex structure of the second sealing part 12, the first sealing part 11 and the second sealing part 12 are closely attached together under the action of the elastic force.

In the above-mentioned solution, when the above-mentioned suction button is applied to the suction valve, the suction button is pressed to make the annular protrusion structure of the first sealing portion 11 and the annular protrusion structure of the second sealing portion 12 closely fit with each other, and at this time, under the combined action of the first sealing portion 11 and the second sealing portion 12, the exhaust hole on the elastic body 1 is isolated from the suction channel of the suction valve, so as to seal the suction channel of the suction valve, and further realize the suction function of the suction valve.

As shown in fig. 3 and 4, preferably, in order to enhance the strength of the second sealing portion 12, the convex structure of the second sealing portion 12 is integrally connected with the inner wall of the elastic main body 1, i.e., there is no groove 14 between the convex structure of the second sealing portion 12 and the inner wall of the elastic main body 1.

In one embodiment of the present invention, as shown in fig. 5, the first sealing portion 11 is a protrusion structure extending axially toward the fixed end 3, the second sealing portion 12 is a groove structure opening toward the first sealing portion 11, and when the suction button is deformed by being pressed axially, the first sealing portion 11 is embedded in the second sealing portion 12.

In the above solution, the cooperation of the first sealing part 11 and the second sealing part 12 is realized by the cooperation of the protrusion 11 and the groove structure 12. Since the first sealing portion 11 and the second sealing portion 12 are in interference fit, the width of the groove is slightly smaller than that of the protrusion. Preferably, the width of the convex structure of the first sealing part 11 is different from the width of the concave structure of the second sealing part 12 by 0.1-0.2 mm.

When the sealing device is used, the first sealing part 11 and the second sealing part 12 both have elasticity, when the protruding structure of the first sealing part 11 enters the groove structure of the second sealing part 12, the first sealing part 11 and the second sealing part 12 deform slightly, and after the protruding structure of the first sealing part 11 enters the groove structure of the second sealing part 12, the first sealing part 11 and the second sealing part 12 are tightly attached together under the action of the elastic force.

Further, the pressing end 2 is provided with a pressing portion 21, and the pressing portion 21 is used for receiving the extrusion force of the outside on the suction button.

Preferably, the pressing portion 21 is a groove structure, when the piston rod 5 abuts against the groove, the end surface of the piston rod 5 and the outer wall of the pressing end 2 of the elastic body 1 are smoothly transited, so that the integrity and the aesthetic property of the suction valve assembly can be enhanced.

Further, the fixing end 3 is provided with a fixing portion 31, and the fixing portion 31 is used for fixing the attraction button to other components.

Preferably, the annular groove integrally formed on the inner wall of the elastic body 1 is fixed, a protruding structure matching with the structure and position of the annular groove is provided at a corresponding position of another component (e.g. on the suction valve body 4), and when the suction button is fixed to another component, the protruding structure on the other component is embedded into the groove of the suction button fixing portion 31, so as to fix the suction button.

In one embodiment of the present invention, the fixing end 3 is provided with a limiting portion 32 extending along an axial direction of the attraction button, and the limiting portion 32 has a straight groove structure.

In the above-mentioned solution, when the suction button is mounted on another component (such as the suction valve body), the elastic body 1 is easily curled, deformed, and the like, and the elastic body 1 may also generate a directional movement.

In the above scheme, the fixed end 3 is provided with the limiting part 32, so that the phenomena of curling, deformation and the like in the installation process of the attraction button can be avoided, and the attraction button can be positioned in the circumferential direction.

Preferably, the position-limiting portion 32 is configured as a straight groove structure.

Of course, the surfaces of the suction button and the other components which are in contact with each other may be both wavy, and the elastic button may be prevented from moving in the circumferential direction by the mutual engagement of the contact surfaces of the suction button and the other components.

Furthermore, a plurality of air discharge parts 13 are uniformly arranged on the suction button, the air discharge parts 13 penetrate through the suction button, and the air discharge parts 13 are positioned between the first sealing part 11 and the second sealing part 12.

In the above scheme, the plurality of exhaust portions 13 are uniformly arranged on the elastic main body 1, so that the strength of each portion of the elastic main body 1 is consistent, and when the elastic main body 1 is pressed to deform in the axial direction, the first sealing portion 11 and the second sealing portion 12 are in interference fit, so that the exhaust portions 13 are isolated from the suction channel of the suction valve, and the sealing performance of the suction channel is ensured.

In one embodiment of the utility model, the attraction button is made of a silicone material.

In one embodiment of the present invention, as shown in fig. 6 and 7, there is provided a suction valve assembly including a suction valve main body 4, and the aforementioned suction button detachably attached to the suction valve main body 4.

In the above solution, compared with the prior art that the return spring is adopted to return the piston rod 5 in the valve, the suction valve in this embodiment adopts the above suction button to replace the spring, and is sleeved between the piston rod 5 and the suction valve body 4; the reset function of the piston rod 5 can be realized due to the self elastic function of the attraction button; meanwhile, when the suction button is pressed axially, the first sealing part 11 and the second sealing part 12 in the suction button are in interference fit, so that the sealing effect on the suction channel in the suction valve can be realized.

In one embodiment of the present invention, there is provided an endoscope comprising a handle portion on which the aforementioned suction valve assembly is provided, and an insertion portion.

The endoscope in the scheme can realize smooth suction of redundant fluid at the focus part of a patient by adopting the suction valve assembly; and adopt above-mentioned attraction button, not only strengthened the sealed effect to the suction channel in the endoscope, above-mentioned attraction button is not fragile simultaneously, and is difficult for corroding, has avoided the secondary infection to the patient.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The attraction button is characterized by being of a hollow structure and comprising an elastic main body (1), wherein one end of the elastic main body (1) is a pressing end (2), and the other end of the elastic main body is a fixed end (3);

a first sealing part (11) is arranged on the inner wall of the elastic main body (1) close to the pressing end (2), and a second sealing part (12) is arranged on the inner wall of the elastic main body (1) close to the fixed end (3); when the suction button is axially pressed and deformed, the first sealing part (11) is in interference fit with the second sealing part (12).

2. The attraction button according to claim 1, wherein the first seal portion (11) is a projection structure extending axially toward the fixed end (3), and the second seal portion (12) is a projection structure extending axially toward the pressing end (2), and the first seal portion (11) is fitted inside the second seal portion (12) when the attraction button is deformed by being pressed axially.

3. The attraction button according to claim 1, wherein the first seal portion (11) is a projection structure extending axially toward the fixed end (3), and the second seal portion (12) is a groove structure opening toward the first seal portion (11), and the first seal portion (11) is fitted into the second seal portion (12) when the attraction button is deformed by being pressed axially.

4. An attraction button as claimed in one of claims 1 to 3, characterized in that the pressing end (2) is provided with a pressing portion (21), which pressing portion (21) is intended to receive a pressing force from the outside on the attraction button.

5. The attraction button according to claim 4, characterized in that the fixing end (3) is provided with a fixing portion (31), the fixing portion (31) being used for fixing the attraction button to other parts.

6. The attraction button according to claim 4, wherein the fixed end (3) is provided with a stopper portion (32) extending in an axial direction of the attraction button, the stopper portion (32) having a straight groove structure.

7. The suction button according to claim 4, wherein a plurality of air discharge portions (13) are uniformly provided on the suction button, the air discharge portions (13) penetrate the suction button, and the air discharge portions (13) are located between the first seal portion (11) and the second seal portion (12).

8. The attraction button of claim 4, wherein the attraction button is formed of a silicone material.

9. A suction valve assembly, characterized by comprising a suction valve body (4), a suction button according to any one of claims 1 to 8, said suction button being removably mounted on said suction valve body (4).

10. An endoscope comprising a handle portion and an insertion portion, the handle portion having the suction valve assembly of claim 9 disposed thereon.