CN217310222U

CN217310222U - Endoscope suction valve and endoscope

Info

Publication number: CN217310222U
Application number: CN202220395607.4U
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: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-08-30
Anticipated expiration: 2032-02-25

Abstract

The utility model is suitable for an endoscope technical field provides an endoscope suction valve and endoscope, including valve body, end cover, sealing member, elastic component and plunger, be provided with the step portion in the valve body, the step portion divides the inner space of valve body into first accommodation space and second accommodation space, the end cover is installed in the open end of valve body; the valve body is provided with a liquid inlet nozzle and a liquid outlet nozzle, the liquid inlet nozzle is communicated with the first accommodating space and is close to the step part, and the liquid outlet nozzle is communicated with the second accommodating space; the sealing element is arranged in a first accommodating space close to the step part, one end of the plunger is abutted against the end cover, and the other end of the plunger extends into the first accommodating space; and two ends of the elastic piece are respectively abutted with the tail end of the valve body and one end of the plunger. The operator can press the end cover at any time to lead the suction valve to conduct for suction operation, and the suction amount is adjusted by the retention time of pressing the end cover.

Description

Endoscope suction valve and endoscope

Technical Field

The utility model belongs to the technical field of the endoscope, a endoscope suction valve is related to, especially, relate to an endoscope.

Background

Endoscopes are commonly used in the medical field as devices that are inserted into the human body to examine lesions in the human body and perform surgical procedures. During the actual operation and use of the endoscope, the excessive tissue fluid accumulated in the body of a patient is often found to be needed to be sucked clean.

Adopt negative pressure mechanism to aspirate tissue fluid among the prior art, however the suction time and suction frequency are difficult to control by man in the suction process, consequently lead to liquid in the hydrops environment to be taken out light easily, but negative pressure mechanism still is working to cause human internal pressure unbalance, consequently control the frequency of sucking is the difficult point of prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an endoscope suction valve, which comprises a valve body, an end cover, a sealing element, an elastic element and a plunger piston, wherein a step part is arranged in the valve body, the step part divides the inner space of the valve body into a first accommodating space and a second accommodating space, and the end cover is arranged at the opening end of the valve body; the valve body is provided with a liquid inlet nozzle and a liquid outlet nozzle, the liquid inlet nozzle is communicated with the first accommodating space and is close to the step part, and the liquid outlet nozzle is communicated with the second accommodating space; the sealing element is arranged in a first accommodating space close to the step part, one end of the plunger is abutted against the end cover, and the other end of the plunger extends into the first accommodating space; and two ends of the elastic piece are respectively abutted with the tail end of the valve body and one end of the plunger.

Preferably, the plunger includes a plug body, a first abutting portion and a second abutting portion, the first abutting portion and the second abutting portion are respectively located at two ends of the plug body, the first abutting portion abuts against the end cover, and the second abutting portion abuts against one end of the elastic member.

Preferably, the plug body is radially provided with a through hole, and the through hole is communicated with the liquid outlet nozzle.

Preferably, the second abutting portion is an annular boss, the second abutting portion is located in the first accommodating space, a gap is formed between the second abutting portion and the stepped portion, and the sealing element is accommodated in the gap.

Preferably, the elastic member is a spring, the second abutting portion is provided with a positioning block in a protruding manner along an axial direction of the second abutting portion, and the positioning block is inserted into a central hollow hole of the spring.

Preferably, the other end opposite to the open end of the valve body is an open end, the open end is provided with a plugging piece, and the plugging piece is fixedly connected with the open end.

Preferably, a sealing block is arranged between the plugging piece and the open end, and the sealing block is respectively abutted against the open end and the plugging piece.

Preferably, the sealing piece and the sealing block are annular rubber pieces.

Preferably, the axis of the liquid inlet nozzle and the axis of the valve body are obliquely arranged.

The utility model also aims at providing an endoscope, which comprises the endoscope suction valve, the liquid inlet nozzle is connected with an instrument tube of the endoscope; the liquid outlet nozzle is connected with a negative pressure device.

Has the advantages that:

1. the utility model discloses in, operating personnel can press down the end cover at any time and make this suction valve conduction carry out the suction operation in operation process, realizes the regulation of suction volume through the dwell time who presses the end cover, consequently this suction valve has better feedback effect, the control and the flow control of being convenient for to operating personnel.

2. The utility model discloses in, as the axis of feed liquor mouth with contained angle between the axis of valve body is less, from the liquid of feed liquor mouth inflow in the first accommodation space, has bigger past second accommodation space mobile minute rate, has reduced the flow resistance of liquid, makes liquid sucked effectively.

3. The utility model discloses in, the purpose that the valve body adopted the open end design helps installing the internal part of attraction valve to the inside of valve body to easy to assemble has improved the installation effectiveness.

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 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a first schematic view of a valve body structure of an endoscope according to an embodiment of the present invention;

FIG. 2 is a first schematic view of the internal structure of the suction valve of the endoscope according to the embodiment of the present invention;

FIG. 3 is a second schematic view of a valve body structure of an endoscope according to an embodiment of the present invention;

FIG. 4 is a second schematic view of the internal structure of the suction valve of the endoscope according to the embodiment of the present invention;

fig. 5 is a first schematic view of a plunger structure provided in an embodiment of the present invention;

fig. 6 is a second schematic view of a plunger structure provided in an embodiment of the present invention;

fig. 7 is a schematic view of a connection structure between an endoscope and a suction valve according to an embodiment of the present invention.

In the attached drawings, 10, a valve body; 100. a step portion; 11. a first valve section; 110. a first accommodating space; 111. a liquid inlet nozzle; 112. a fourth clamping part; 12. a second valve section; 120. a second accommodating space; 121. a liquid outlet nozzle; 122. a first clamping part; 123. an open end; 13. an end cap; 131. a containing groove; 132. a bump; 133. a second clamping part; 14. a blocking member; 141. a third clamping connection part; 142. a circular boss; 151. a sealing block; 152. a seal member; 16. an elastic member; 17. a plug body; 170. a through hole; 171. a second abutting portion; 172. a first abutting portion; 173. positioning blocks; 174. an annular groove; 20. a suction nozzle; 21. a second conduit; 30. an instrument tube insertion portion; 31. a first communicating portion; 32. a second communicating portion; 33. a first conduit; 40. an instrument tube.

Detailed Description

The following description provides many different embodiments, or examples, for implementing different features of the invention. The particular examples set forth below are intended as illustrations of a matter of simplicity of description and are not intended as limitations on the invention.

Referring to fig. 1 and 2, the present invention provides an endoscope suction valve, which includes a valve body 10, an end cap 13, a sealing member 152, an elastic member 16, and a plunger.

Referring to fig. 1, a stepped portion 100 is provided in the valve body 10, the stepped portion 100 may be an annular boss having a wedge-shaped torus or a platform torus, the stepped portion 100 divides an inner space of the valve body 10 into a first accommodating space 110 and a second accommodating space 120, and in this embodiment, an inner diameter of the first valve portion 11 wrapping the first accommodating space 110 is larger than an inner diameter of the second valve portion 12 wrapping the second accommodating space 120, so that the stepped portion 100 is naturally formed in the inner spaces of the first valve portion 11 and the second valve portion 12.

Referring to fig. 2 and 3, the end cover 13 is installed at the opening end 123 of the valve body 10, specifically, a first clamping portion 122 is radially disposed at the opening end 123 of the valve body 10, and a second clamping portion 133 connected to the first clamping portion 122 in a matching manner is disposed at an end of the end cover 13, the second clamping portion 133 has elasticity along a radial direction of the end cover 13, the second clamping portion 133 of the end cover 13 is pushed in from the opening end 123 along an axial direction of the valve body 10 during installation, and under the action of an axial force, the second clamping portion 133 is radially outwardly bent along the axial direction until the first clamping portion 122 is clamped with the second clamping portion 133, so that the end cover 13 is not easily separated from the opening end 123, and the end cover 13 has a space axially movable with the opening end 123.

As shown in fig. 1, a liquid inlet 111 and a liquid outlet 121 are disposed on the valve body 10, the liquid inlet 111 is communicated with the first accommodating space 110 and is close to the step portion 100, and the liquid outlet 121 is communicated with the second accommodating space 120; further, the axis of the liquid inlet nozzle 111 and the axis of the valve body 10 are arranged in an inclined manner, when an included angle between the axis of the liquid inlet nozzle 111 and the axis of the valve body 10 is small, liquid entering the valve body 10 from the liquid inlet nozzle 111 can more easily enter the second accommodating space 120 and flow out from the liquid outlet nozzle 121, and the reason is that when the included angle is small, liquid flowing into the first accommodating space 110 from the liquid inlet nozzle 111 has a larger component velocity flowing to the second accommodating space 120, so that the flow resistance of the liquid is reduced, and the liquid is effectively sucked.

As shown in fig. 2, the sealing element 152 is disposed in the first accommodating space 110 close to the step portion 100, in this embodiment, the sealing element 152 is an annular rubber ring, and when the suction valve is in a closed state, the sealing element 152 abuts against the surface of the step portion 100 from the first accommodating space 110 toward the second accommodating space 120; one end of the plunger abuts against the end cover 13, wherein in this embodiment, a receiving groove 131 is provided at the center of the end cover 13, a protrusion 132 is provided at the bottom of the receiving groove 131 for abutting against the end of the plunger, and the receiving groove 131 is matched with the end connected with the plunger in size, so as to prevent the end cover 13 from deflecting along the radial direction thereof when the end cover 13 is in use; the other end of the plunger extends into the first accommodating space 110; both ends of the elastic member 16 abut against the end of the valve body 10 and one end of the plunger, respectively. In this embodiment, preferably, the plunger includes a plug body 17, a first abutting portion 172 and a second abutting portion 171, the first abutting portion 172 and the second abutting portion 171 are respectively located at two ends of the plug body 17, the first abutting portion 172 abuts against the end cap 13, the second abutting portion 171 abuts against one end of the elastic member 16, and the elastic member 16 is a spring; the second abutting portion 171 is an annular boss, an outer ring of the annular boss has a size equivalent to a diameter of the first receiving space 110, so as to ensure that the plunger can only move along an axial direction of the valve body 10, as shown in fig. 2, the second abutting portion 171 is located in the first receiving space 110, a gap is formed between the second abutting portion 171 and the step portion 100, as shown in fig. 5, an annular groove 174 is annularly formed in the plug body 17 at the gap position, the sealing element 152 is sleeved outside the annular groove 174, and the sealing element 152 is received in the gap; in addition, a positioning block 173 is protruded along the axial direction of the second contact portion 171, the positioning block 173 is disposed along the axial direction of the second receiving space 120, and the positioning block 173 is inserted into the central hollow of the spring, so that the spring is in a relatively fixed position.

As shown in fig. 4 to fig. 6, the plug 17 is radially provided with a through hole 170, and the through hole 170 is communicated with the liquid outlet nozzle 121. Please refer to fig. 5, in the embodiment, the through hole 170 is a strip shape, and the length direction of the through hole is consistent with the axial direction of the plug body 17, it should be noted that in other embodiments, the through hole 170 may have other shapes, and the core function of the through hole 170 is to ensure that the through hole 170 can be communicated with the liquid outlet nozzle 121 when the plunger moves along the axial direction of the valve body 10, and simultaneously communicate the first accommodating space 110 with the second accommodating space 120, so as to ensure that the liquid inlet nozzle 111, the first accommodating space 110, the second accommodating space 120 and the liquid outlet nozzle 121 are communicated when the suction valve is in a communication state. In the working principle, when suction operation is required, the end cover 13 is pressed, and the plunger is abutted against the end cover 13, so that the plunger moves along the axial direction of the valve body 10 and drives the sealing member 152 to move towards the first accommodating space 110 to conduct the liquid inlet nozzle 111, the first accommodating space 110, the second accommodating space 120 and the liquid outlet nozzle 121, and at the moment, the negative pressure equipment connected with the liquid outlet nozzle 121 sucks interstitial fluid in the human body; in the operation process, an operator can press the end cover 13 at any time to lead the suction valve to conduct for suction operation, and the suction amount is adjusted by the retention time of pressing the end cover 13, so that the suction valve has a better feedback effect on the operator, and is convenient for control and flow adjustment.

Please refer to fig. 3, the other end opposite to the open end 123 of the valve body 10 is an open end, the open end is provided with a plugging member 14, a third fastening portion 141 is provided around the plugging member 14, a fourth fastening portion 112 is provided at the open end corresponding to the third fastening portion, as shown in fig. 3, the fourth fastening portion 112 is an annular protruding portion protruding outward, the open end is sealed by fastening the third fastening portion 141 and the fourth fastening portion 112, further, a sealing block 151 is provided between the plugging member 14 and the open end to ensure the sealing effect after fastening the third fastening portion 141 and the fourth fastening portion 112, and the sealing block 151 is respectively abutted to the open end and the plugging member 14. Preferably, in this embodiment, the sealing block 151 is an annular rubber member, and the blocking member 14 is provided with a circular boss 142 towards the center of the first accommodating space 110, the circular boss 142 is equivalent to the inner circle of the sealing block 151 in size, and the sealing block 151 is sleeved on the circular boss 142. In the illustration of the present embodiment, the purpose of the open-end design of the valve body 10 is to facilitate the installation of the internal components of the suction valve (the elastic member 16, the sealing member 152, the sealing block 151 and the plug body 17) to the inside of the valve body 10, thereby facilitating the installation and improving the installation efficiency.

Referring to fig. 7, the present invention further provides an endoscope, which includes the above-mentioned endoscope suction valve, wherein the liquid inlet 111 is connected to the instrument tube 40 of the endoscope; the liquid outlet 121 is connected to a negative pressure device. Specifically, referring to the figures, an endoscopic instrument tube 40 extends from the handle end of the endoscope, and the end of the instrument tube 40 is connected to an instrument tube insertion portion 30, the instrument tube insertion portion 30 includes a first communicating portion 31 and a second communicating portion 32, the first communicating portion 31 is connected to the instrument tube 40, and the second communicating portion 32 is connected to the liquid inlet 111 through a first conduit 33; the end of the liquid outlet nozzle 121 is connected with a second conduit 21, and the second conduit 21 is connected with a suction nozzle 20 on the negative pressure device.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An endoscope suction valve, characterized in that: the valve comprises a valve body (10), an end cover (13), a sealing piece (152), an elastic piece (16) and a plunger, wherein a step part (100) is arranged in the valve body (10), the step part (100) divides the inner space of the valve body (10) into a first accommodating space (110) and a second accommodating space (120), and the end cover (13) is arranged at an opening end (123) of the valve body (10); a liquid inlet nozzle (111) and a liquid outlet nozzle (121) are arranged on the valve body (10), the liquid inlet nozzle (111) is communicated with the first accommodating space (110) and is close to the step part (100), and the liquid outlet nozzle (121) is communicated with the second accommodating space (120); the sealing element is arranged in a first accommodating space (110) close to the step part (100), one end of the plunger is abutted against the end cover (13), and the other end of the plunger extends into the first accommodating space (110); and two ends of the elastic piece (16) are respectively abutted with the tail end of the valve body (10) and one end of the plunger.

2. The endoscopic suction valve according to claim 1, wherein: the plunger comprises a plug body (17), a first abutting portion (172) and a second abutting portion (171), the first abutting portion (172) and the second abutting portion (171) are located at two ends of the plug body (17) respectively, the first abutting portion (172) abuts against the end cover (13), and the second abutting portion (171) abuts against one end of the elastic piece (16).

3. The endoscopic suction valve according to claim 2, wherein: the plug body (17) is radially provided with a through hole (170), and the through hole (170) is communicated with the liquid outlet nozzle (121).

4. The endoscopic suction valve according to claim 2, wherein: the second abutting portion (171) is an annular boss, the second abutting portion (171) is located in the first accommodating space (110), a gap is formed between the second abutting portion (171) and the stepped portion (100), and the sealing element is accommodated in the gap.

5. The endoscopic suction valve according to claim 4, wherein: the elastic piece (16) is a spring, a positioning block (173) is arranged on the second abutting portion (171) in a protruding mode along the axial direction of the second abutting portion, and the positioning block (173) is inserted into a central hollow hole of the spring.

6. The endoscopic suction valve according to claim 1, wherein: the other end opposite to the opening end (123) of the valve body (10) is an open end, and a plugging piece (14) is fixedly arranged at the open end.

7. The endoscopic suction valve according to claim 6, wherein: the plugging piece (14) and be provided with sealed piece (151) between the open end, sealed piece (151) butt respectively the open end with plugging piece (14).

8. The endoscopic suction valve according to claim 7, wherein: the sealing piece and the sealing block (151) are annular rubber pieces.

9. The endoscopic suction valve according to claim 1, wherein: the axis of the liquid inlet nozzle (111) and the axis of the valve body (10) are obliquely arranged.

10. An endoscope comprising the endoscopic suction valve as defined in any one of claims 1 to 9, characterized in that: the liquid inlet nozzle (111) is connected with an instrument tube (40) of the endoscope; the liquid outlet nozzle (121) is connected with a negative pressure device.