CN215016999U

CN215016999U - Suction valve for endoscope

Info

Publication number: CN215016999U
Application number: CN202120349111.9U
Authority: CN
Inventors: 叶礼强
Original assignee: Hangzhou Weishi Medical Technology Co ltd
Current assignee: Hangzhou Weishi Medical Technology Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-12-07
Anticipated expiration: 2031-02-07

Abstract

The utility model belongs to the technical field of the suction valve and specifically relates to a suction valve for endoscope is related to, it includes that one end is equipped with open-ended casing, slides and pegs graft in the inside case of casing, set up in shells inner wall with elastic component between the case, set up the sealing member between case and shells inner wall, case one end stretches out the casing through the opening and is equipped with and presses the splenium, feed through in the inside inlet of casing and liquid outlet have been seted up respectively to casing outer wall both sides, set up the transition passageway that runs through on the case, the extension line of transition passageway with contained angle between the extension line of case slip direction is the acute angle, the case makes after removing transition passageway both ends opening communicates respectively in inlet and liquid outlet. This application has the effect that promotes suction valve leakproofness.

Description

Suction valve for endoscope

Technical Field

The present application relates to the field of suction valves, and more particularly to a suction valve for an endoscope.

Background

Endoscopes are common detection instruments in modern medical diagnosis and treatment, and can enter the stomach through oral cavities or enter the body through other natural ducts, and can also enter the body through incisions formed by operations. Through the endoscope, a doctor can observe the pathological changes which cannot be displayed by X-rays in a human body, and the subsequent diagnosis of the pathological conditions is facilitated.

In the endoscope, the suction valve is matched with the suction tube to suck the effusion in the patient body so as to eliminate the interference of the effusion in the examination and treatment processes and ensure the observation visual field of a doctor. When the suction valve is operated, the liquid inlet is communicated with the liquid outlet through the internal passage of the valve core by pressing the button of the suction valve, so that a negative pressure channel is formed to suck out body fluid of in-vivo pathological change tissues and the excised pathological change tissues.

At present, a liquid inlet and a liquid outlet of a commonly used suction valve are located at corresponding positions in the radial direction of a valve core, so that a flow path in the valve core of fluid is short, the fluid is easy to flow from the liquid inlet to the liquid outlet through a gap in the valve body, and the sealing performance is poor.

SUMMERY OF THE UTILITY MODEL

In order to improve the sealing performance of the suction valve, the application provides the suction valve for the endoscope.

The application provides a suction valve for endoscope, adopts following technical scheme:

the utility model provides an attraction valve for endoscope, includes that one end is equipped with open-ended casing, slides and pegs graft in the inside case of casing, set up in shells inner wall with elastic component between the case, set up the sealing member between case and shells inner wall, case one end stretches out the casing through the opening and is equipped with presses the splenium, the inlet and the liquid outlet that communicate in the inside of casing are seted up respectively to casing outer wall both sides, set up the transition passageway that runs through on the case, the extension of transition passageway with the contained angle between the extension of case slip direction is the acute angle, the case makes after removing transition passageway both ends opening communicates in inlet and liquid outlet respectively.

Through adopting above-mentioned technical scheme, will pass through the slope setting of passageway, inlet and liquid outlet are crisscross setting promptly, increase the circulation route between case and the shells inner wall of fluid in the casing to make the difficult liquid from inlet circulation to liquid outlet of following, thereby increase the leakproofness of attraction valve.

Preferably, the valve core peripheral wall is provided with a first limiting ring groove located on one side of the transition channel away from the opening, the sealing element comprises a first sealing ring arranged in the first limiting ring groove, and the first sealing ring is located between the liquid inlet and the liquid outlet.

Through adopting above-mentioned technical scheme, set up first sealing washer between inlet and liquid outlet to cut the clearance between inlet and the liquid outlet, when using, through pressing down the case, make first sealing washer under the drive of first spacing annular, move towards one side of inlet and liquid outlet, and finally make inlet and liquid outlet be located same one side of first sealing washer, and communicate through transition channel.

Preferably, a second limiting ring groove is formed in the peripheral wall of the valve core, openings at two ends of the transition channel are respectively located at two sides of the second limiting ring groove, and the sealing element further comprises a second sealing ring located in the second limiting ring groove.

Through adopting above-mentioned technical scheme, through setting up the second sealing washer, inlet and liquid outlet are not under the circumstances of communicateing, seal the clearance that inlet and liquid outlet are close to opening one side to reduce the condition that the fluid spills over through the opening.

Preferably, the valve core peripheral wall is provided with a third limiting ring groove located on one side of the transition passage close to the opening, and the sealing element further comprises a third sealing ring located in the third limiting ring groove.

Through adopting above-mentioned technical scheme, through setting up the third sealing washer, under the condition of inlet and liquid outlet intercommunication, when the second sealing washer moved to between inlet and the liquid outlet promptly, through the third sealing washer, close the clearance of opening one side to inlet and liquid outlet to reduce the condition that the fluid spills over through the opening.

Preferably, the end face of the valve core, which is far away from the opening, is provided with a positioning groove, and the elastic part comprises a spring, two ends of which are respectively abutted against the inner wall of the positioning groove and the inner wall of the shell.

Through adopting above-mentioned technical scheme, through setting up the constant head tank to the position to the spring is injectd, makes the position relation of spring between case and casing more stable.

Preferably, the shell opening end cover is provided with a cover body, and the top of the cover body is provided with a through hole for the pressing part to penetrate out.

Through adopting above-mentioned technical scheme, through setting up the lid to make and press the portion of pressing to wear out the through-hole, in order to inject the relative position of case for the casing, reduce the case that the case was deviate from to the case.

Preferably, a cutting groove communicated with the circumferential wall of the shell is formed in the end face, close to the opening, of the shell, a first limiting groove extending along the circumferential direction of the shell is formed in the inner wall of the cutting groove, and a limiting block is fixedly connected to the inner circumferential wall of the cover body.

By adopting the technical scheme, under the matching of the limiting block, the cutting groove and the first limiting groove, when the cover body is installed, the cover body is buckled at the opening end of the shell, the limiting block moves to the position corresponding to the first limiting groove along the cutting groove, and the limiting block enters the first limiting groove by rotating the cover body, so that the relative position of the cover body relative to the shell is limited.

Preferably, the first spacing groove is close to the inside inner wall of casing and keeps away from the one end of first spacing groove and has seted up the second spacing groove, the stopper winds lid internal perisporium hoop extension, just the distance that the stopper is close to the one end of second spacing groove to lid center is greater than the other end.

Through adopting above-mentioned technical scheme, under the cooperation of stopper and second spacing groove, after the stopper removed to first spacing inslot, because the distance of stopper one end to lid center is greater than the other end, through rotating the lid, make stopper one end get into the second spacing inslot to prescribe a limit to the relative rotational position between lid and the casing.

Preferably, the outer wall of the shell is fixedly connected with a liquid inlet pipe and a liquid outlet pipe respectively, the liquid inlet pipe is communicated with the liquid inlet, and the liquid outlet pipe is communicated with the liquid outlet.

Through adopting above-mentioned technical scheme, through setting up feed liquor pipe and drain pipe to outside tube coupling is in the inlet and the liquid outlet of suction valve.

Preferably, the included angle between the extension line of the transition passage and the extension line of the sliding direction of the valve core is 40-50 degrees.

Through adopting above-mentioned technical scheme, make transition channel when guaranteeing the leakproofness, shorten the volume of casing and case as far as possible, promote space utilization, and reduce the stroke of pressing.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the transition channel is obliquely arranged, so that the flow path of the fluid between the valve core in the shell and the inner wall of the shell is increased, the fluid is difficult to flow from the liquid inlet to the liquid outlet, and the sealing performance of the suction valve is improved;

2. under the matching of the first sealing ring, the second sealing ring and the third sealing ring, the sealing performance of the valve core is further improved, and fluid is prevented from overflowing from the opening;

3. the relative position of the cover body relative to the shell is limited under the matching of the limiting block, the cutting groove, the first limiting groove and the second limiting groove, and a user can conveniently detach the suction valve.

Drawings

Fig. 1 is an overall sectional view of the present embodiment.

Fig. 2 is a schematic structural diagram of the present embodiment.

Description of reference numerals: 1. a housing; 2. a valve core; 3. a cover body; 4. an elastic member; 5. a seal member; 6. an opening; 7. a liquid inlet; 8. a liquid outlet; 9. a liquid inlet pipe; 10. a liquid outlet pipe; 11. a transition passage; 12. a first limit ring groove; 13. a second limit ring groove; 14. a third limit ring groove; 15. a first seal ring; 16. a second seal ring; 17. a third seal ring; 18. positioning a groove; 19. a spring; 20. a through hole; 21. a pressing part; 22. grooving; 23. a first limit groove; 24. a limiting block; 25. a second limit groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a suction valve for an endoscope. Referring to fig. 1 and 2, an attraction valve for an endoscope includes a housing 1, a valve core 2, a cover 3, an elastic member 4 and a sealing member 5, wherein the housing 1 is a cylinder, an opening 6 communicated with the inside is provided at one end of the housing, a liquid inlet 7 and a liquid outlet 8 communicated with the inside of the housing 1 are respectively provided at two sides of the outer wall of the housing 1, the outer wall of the housing 1 is fixedly connected with a liquid inlet pipe 9 and a liquid outlet pipe 10 respectively, the liquid inlet pipe 9 is communicated with the liquid inlet 7, the liquid outlet pipe 10 is communicated with the liquid outlet 8, the valve core 2 is slidably inserted into the housing 1 through the opening 6, the elastic member 4 is arranged between the inner wall of the housing 1 and the valve core 2, and the sealing member 5 is arranged between the inner wall of the valve core 2 and the housing 1.

Referring to fig. 1 and 2, a through transition channel 11 is formed in the valve core 2, an included angle between an extension line of the transition channel 11 and an extension line of the sliding direction of the valve core 2 is 40-50 degrees, and after the valve core 2 moves, openings 6 at two ends of the transition channel 11 are respectively communicated with the liquid inlet 7 and the liquid outlet 8.

Referring to fig. 1 and 2, a first limiting ring groove 12, a second limiting groove 25 and a third limiting groove are sequentially formed in the peripheral wall of the valve core 2, and the sealing element 5 comprises a first sealing ring 15, a second sealing ring 16 and a third sealing ring 17 which are respectively located in the first limiting ring groove 12, the second limiting groove 25 and the third limiting groove.

Referring to fig. 1 and 2, the first limiting ring groove 12 is located on one side of the transition channel 11 far from the opening 6, the first sealing ring 15 is located between the liquid inlet 7 and the liquid outlet 8, the openings 6 at two ends of the transition channel 11 are respectively located on two sides of the second limiting ring groove 13, and the third limiting ring groove 14 is located on one side of the transition channel 11 close to the opening 6.

Referring to fig. 1 and 2, a positioning groove 18 is formed in an end surface of the valve core 2 away from the opening 6, and the elastic element 4 includes a spring 19 whose two ends are respectively abutted against an inner wall of the positioning groove 18 and an inner wall of the housing 1.

Referring to fig. 1 and 2, a through hole 20 for pressing the portion 21 to penetrate out is provided at the top of the cover body 3, one end of the valve core 2 is provided with a pressing portion 21 extending out of the casing 1 through the through hole 20, a cutting groove 22 communicating with the peripheral wall of the casing 1 is provided at the end surface of the casing 1 close to the opening 6, a first limiting groove 23 extending along the circumferential direction of the casing 1 is provided at the inner wall of the cutting groove 22, a limiting block 24 is fixedly connected to the inner circumferential wall of the cover body 3, the first limiting groove 23 is close to the inner wall of the casing 1 and is provided with a second limiting groove 25 at one end far away from the first limiting groove 23, the limiting block 24 extends circumferentially around the inner circumferential wall of the cover body 3, and the distance from one end of the limiting block 24 close to the second limiting groove 25 to the center of the cover body 3 is greater than the other end.

The implementation principle of the suction valve for the endoscope comprises the following steps:

the transition channel 11 is arranged obliquely, namely the liquid inlet 7 and the liquid outlet 8 are arranged in a staggered manner, so that the flow path of the fluid between the valve core 2 in the shell 1 and the inner wall of the shell 1 is increased, the fluid is difficult to flow from the liquid inlet 7 to the liquid outlet 8, and the sealing performance of the suction valve is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A suction valve for an endoscope, characterized by: comprises a shell (1) with an opening (6) at one end, a valve core (2) inserted in the shell (1) in a sliding way, an elastic piece (4) arranged between the inner wall of the shell (1) and the valve core (2), and a sealing piece (5) arranged between the valve core (2) and the inner wall of the shell (1), one end of the valve core (2) extends out of the shell (1) through the opening (6) and is provided with a pressing part (21), a liquid inlet (7) and a liquid outlet (8) which are communicated with the interior of the shell (1) are respectively arranged on two sides of the outer wall of the shell (1), a through transition channel (11) is arranged on the valve core (2), an included angle between an extension line of the transition channel (11) and an extension line of the valve core (2) in the sliding direction is an acute angle, and after the valve core (2) moves, the openings (6) at the two ends of the transition channel (11) are respectively communicated with the liquid inlet (7) and the liquid outlet (8).

2. A suction valve for an endoscope, according to claim 1, characterized by: the valve core (2) is provided with a first limiting ring groove (12) on one side of the transition channel (11) far away from the opening (6), the sealing element (5) comprises a first sealing ring (15) arranged in the first limiting ring groove (12), and the first sealing ring (15) is arranged between the liquid inlet (7) and the liquid outlet (8).

3. A suction valve for an endoscope, according to claim 2, characterized in that: second limiting ring grooves (13) are formed in the peripheral wall of the valve core (2), openings (6) in two ends of the transition channel (11) are located on two sides of the second limiting ring grooves (13) respectively, and the sealing element (5) further comprises second sealing rings (16) located in the second limiting ring grooves (13).

4. A suction valve for an endoscope, according to claim 3, characterized in that: the peripheral wall of the valve core (2) is provided with a third limiting ring groove (14) which is positioned on one side of the transition channel (11) close to the opening (6), and the sealing element (5) further comprises a third sealing ring (17) which is positioned in the third limiting ring groove (14).

5. A suction valve for an endoscope, according to claim 1, characterized by: the end face, far away from the opening (6), of the valve core (2) is provided with a positioning groove (18), and the elastic piece (4) comprises a spring (19) of which two ends are respectively abutted against the inner wall of the positioning groove (18) and the inner wall of the shell (1).

6. A suction valve for an endoscope, according to claim 1, characterized by: the shell (1) is provided with an opening (6) and an end cover is provided with a cover body (3), and the top of the cover body (3) is provided with a through hole (20) for the pressing part (21) to penetrate out.

7. A suction valve for an endoscope, according to claim 6, characterized by: the end face, close to the opening (6), of the shell (1) is provided with a cutting groove (22) communicated with the peripheral wall of the shell (1), the inner wall of the cutting groove (22) is provided with a first limiting groove (23) extending along the circumferential direction of the shell (1), and the inner peripheral wall of the cover body (3) is fixedly connected with a limiting block (24).

8. A suction valve for an endoscope, according to claim 7, characterized by: first spacing groove (23) are close to the inner wall of casing (1) inside and keep away from the one end of first spacing groove (23) and seted up second spacing groove (25), stopper (24) wind lid (3) internal perisporium hoop extension, just stopper (24) are close to the one end of second spacing groove (25) and are greater than the other end to the distance at lid (3) center.

9. A suction valve for an endoscope, according to claim 1, characterized by: casing (1) outer wall is fixedly connected with feed liquor pipe (9) and drain pipe (10) respectively, feed liquor pipe (9) communicate in inlet (7), drain pipe (10) communicate in liquid outlet (8).

10. A suction valve for an endoscope, according to claim 1, characterized by: the included angle between the extension line of the transition channel (11) and the extension line of the sliding direction of the valve core (2) is 40-50 degrees.