CN210871458U

CN210871458U - Endoscope water and air feeding assembly

Info

Publication number: CN210871458U
Application number: CN201921545218.XU
Authority: CN
Inventors: 周健
Original assignee: Chongqing Jinshan Medical Technology Research Institute Co Ltd
Current assignee: Chongqing Jinshan Medical Technology Research Institute Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-06-30
Anticipated expiration: 2029-09-17

Abstract

The utility model provides an endoscope send water and supply air subassembly belongs to endoscope technical field. The water and air supply assembly solves the problems that the existing water and air supply assembly of the endoscope has a longer water and air shared pipeline, and more residual water in the shared pipeline is left when the system is switched from water supply to air supply. The endoscope water and air supply assembly comprises a water supply pipe, an air supply pipe and a water-air nozzle arranged at the head end part of the endoscope, wherein the water supply pipe and the air supply pipe are arranged in the bending part of the endoscope and extend to the head end part of the endoscope, and a converging structure for converging the water supply pipe and the air supply pipe to the water-air nozzle is arranged in the head end part of the endoscope. The utility model discloses reduced the length of aqueous vapor shared pipeline greatly, it is few to send water to finish converting the interior residual water of pipeline behind the state of supplying gas, has realized the purpose of quick clean objective window.

Description

Endoscope water and air feeding assembly

Technical Field

The utility model belongs to the technical field of the endoscope, a water and air supply assembly is sent to endoscope is related to.

Background

The electronic endoscope is a device which is provided with a slender flexible insertion part and is provided with a camera device at the front end, the camera device can be inserted into a body cavity to acquire an image of an intracavity scene, and the electronic endoscope can realize real-time output display of the image of the intracavity scene by being connected with other equipment in an endoscope system. As shown in fig. 1, the distal end of the endoscope insertion portion has a bending portion 2 'and a tip portion 1', and the tip portion 1 is provided with an illumination window, an objective lens window, a water vapor nozzle, an instrument passage port, and the like. Because the space limitation of the head end part 1' and the condition of simultaneously feeding water and air during actual operation can not exist, the two functions of feeding water and air are realized by the water-air nozzle, the objective window can be washed clean when the water-air nozzle sprays water, the inflation is realized during air injection, the internal expansion is supplied for better observation of doctors, and the water drops remained on the objective window after cleaning can be thoroughly cleaned.

As shown in fig. 1, the water supply pipe 3 'and the air supply pipe 4' are joined by a water vapor three-way joint 5 'and then connected to a water vapor nozzle through a water vapor pipe 6'. Limited by the narrow space of the bending part, the water-gas three-way joint 5 ' can only be arranged at the rear end of the bending part 2 ', so that a longer distance L ' from the water-gas three-way joint 5 ' to the water-gas nozzle at the head end part 1 ' is a water-gas pipe 6 ' shared by water and gas, when the water supply and the cleaning of the objective window are finished to switch the gas supply, residual water still exists in the longer water-gas pipe 6 ', the objective window can be thoroughly cleaned only by ensuring that the supplied air does not contain water after the residual water is taken away by the air, and the discomfort of a patient is caused by excessive gas supplied into the body cavity.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problems in the prior art, and provides an endoscope water and air supply assembly capable of reducing water residue.

The purpose of the utility model can be realized by the following technical proposal:

the endoscope water and air feeding assembly comprises a water feeding pipe, an air feeding pipe and a water-air nozzle arranged at the head end part of the endoscope, and is characterized in that the water feeding pipe and the air feeding pipe are arranged in a bending part of the endoscope and extend to the head end part of the endoscope, and a converging structure for converging the water feeding pipe and the air feeding pipe to the water-air nozzle is arranged in the head end part of the endoscope.

The endoscope comprises an operation part, an insertion hose arranged at the front end of the operation part, a bending part connected to the front end of the insertion hose and a head end part arranged at the front end of the bending part, wherein a water supply pipe and an air supply pipe are hoses, and the water supply pipe and the air supply pipe sequentially penetrate through the operation part and the insertion hose and then extend into the bending part. The converging structure is arranged in the head end part of the endoscope, so that the distance between a water and gas converging point and the water-gas nozzle is greatly reduced, residual water in the pipeline is less after the water feeding is finished and the air feeding state is converted, gas without water drops can be rapidly fed out by the water-gas nozzle, and the residual water on the surface of the objective lens window on the head end part of the endoscope can be rapidly and thoroughly cleaned.

In foretell endoscope send water to supply air subassembly, be equipped with the head end seat in the tip portion of endoscope, the structure of converging including locating first through-hole, the through-hole two that extends along head end seat axial on the head end seat rear end face and locating the through-hole three that extends along head end seat axial on the head end seat front end face, the inside of head end seat is equipped with the connection chamber, the front end of first through-hole and through-hole two communicates with the connection chamber respectively, the rear end and the connection chamber intercommunication of through-hole three, foretell water supply pipe and first through-hole intercommunication, the air supply pipe communicates with second through-hole, aqueous vapor spray tube and third through-hole intercommunication. The through hole I, the through hole II, the through hole III and the connecting cavity form a three-way structure. Because the water supply pipe and the air supply pipe adopt flexible pipes, the water supply pipe and the air supply pipe are bent together with the bending part when the endoscope works. The junction of the water supply pipe and the air supply pipe is a connecting cavity, the distance from the water-gas nozzle to the connecting cavity is short, and the residual water is less.

In the endoscope water and air supply assembly, a first connecting pipe is arranged in the first through hole, and the water supply pipe is sleeved on the first connecting pipe; the through hole II is internally provided with a connecting pipe II, and the air supply pipe is sleeved on the connecting pipe II. The first connecting pipe is a hard pipe which is tightly matched with the first through hole in a sealing manner, the part of the first connecting pipe, which extends out of the first through hole, is conveniently connected with the water supply pipe, and the water supply pipe can be sleeved on the first connecting pipe during connection. The second connecting pipe is a hard pipe which is tightly sealed and matched with the second through hole, the part of the second connecting pipe, which extends out of the second through hole, is conveniently connected with the air supply pipe, and the air supply pipe can be sleeved on the second connecting pipe during connection.

In the endoscope water and air supply assembly, the first connecting pipe is provided with a first limiting step abutted against the rear end face of the head end seat, and the second connecting pipe is provided with a second limiting step abutted against the rear end face of the head end seat. The limiting step limits the position of the first connecting pipe, so that the length of the first connecting pipe inserted into the first through hole is smaller than the depth of the first through hole, and the first connecting pipe is prevented from blocking the connecting cavity; the position of the two pairs of connecting pipes II of the limiting step is limited, so that the length of the connecting pipes II inserted into the through holes II is smaller than the depth of the through holes II, the connecting cavities are prevented from being blocked, and the through holes I, II and III are ensured to be communicated all the time.

In the endoscope water and air feeding assembly, an insulating sleeve is arranged between the water vapor nozzle and the third through hole. The water-gas nozzle comprises an outlet end and a tubular insertion end, the insertion end is inserted into the third through hole, and the insulation sleeve is sleeved on the insertion end. The aqueous vapor nozzle is for the metal material that accords with biocompatibility, realizes electrical isolation through the insulating sleeve who sets up, guarantees electric safety.

A water-air switching valve is arranged on an operation part of an endoscope, so that a water supply pipe and an air supply pipe have three states: 1. the water supply pipe and the air supply pipe are both closed, and in this case, water supply and air supply are not performed; 2. the water supply pipe is opened and the air supply pipe is closed, and only water is supplied in the case of the water supply; 3. the air supply pipe is opened and the water supply pipe is closed, and in this case, only air is supplied. When the water supply device is in a water supply state, water can only enter the water-air nozzle through the water supply pipe due to the blockage of the air supply pipe; when the water nozzle is in the air supply state, air can only enter the water nozzle through the air supply pipe due to the blocking of the water supply pipe.

Compared with the prior art, the water and air feeding assembly of the endoscope has the following advantages:

its simple structure, it is with low costs, the great aqueous vapor three way connection of the processing degree of difficulty cancels in with current structure, the structure of fixing is carried out to the aqueous vapor three way connection in current structure has been reduced simultaneously, head end seat with three way connection structure is taken in the design of the head end portion of endoscope, be connected respectively with water supply pipe and blast pipe, thereby the shared pipeline length of water and gas reduces greatly, the water residual quantity is few when switching the air feed state after the water supply, make aqueous vapor nozzle can send out non-aqueous gas fast, and can thoroughly clear up the residual water that locates the objective window surface on the head end portion front end fast, the gas of sending into is appropriate, can not cause patient's discomfort.

Drawings

Fig. 1 is a schematic structural view of a water and air supply assembly provided in the background art.

Fig. 2 is a schematic structural view of an endoscope provided by the present invention.

Fig. 3 is a cross-sectional view of a preferred embodiment of the present invention.

Fig. 4 is a cross-sectional view of a head end portion provided by the present invention.

Fig. 5 is an exploded view of the preferred embodiment of the present invention.

Fig. 6 is a schematic structural view of the head end portion provided by the present invention.

In the figure, 1, head end; 2. a bending section; 3. a water supply pipe; 4. an air supply pipe; 7. a water-air nozzle; 8. a head end seat; 91. a first through hole; 92. a second through hole; 93. a third through hole; 94. a connecting cavity; 101. a first connecting pipe; 102. a second connecting pipe; 103. a first limiting step; 104. a second limiting step; 11. an insulating sleeve; 12. an operation section; 13. inserting a hose; 14. an objective window.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The endoscope shown in fig. 2 includes an operation unit 12, an insertion tube 13 provided at the distal end of the operation unit 12, a bending portion 2 connected to the distal end of the insertion tube 13, and a distal end portion 1 provided at the distal end of the bending portion 2, and an illumination window, an objective lens window 14, an instrument passage port, and the like are provided at the distal end of the distal end portion 1. The water and air supply assembly for an endoscope shown in fig. 3 includes a water supply pipe 3, an air supply pipe 4, and a water-air nozzle 7 provided in a head end portion 1 of the endoscope, and a joining structure for joining the water supply pipe 3 and the air supply pipe 4 to the water-air nozzle 7 is provided in the head end portion 1 of the endoscope. The water supply tube 3 and the air supply tube 4 are flexible tubes, and the water supply tube 3 and the air supply tube 4 are bent together with the bending portion 2 when the endoscope is operated. The water supply tube 3 and the air supply tube 4 are inserted into the bending portion 2 through the operation portion 12 and the insertion tube 13 in this order, and extend to the distal end portion 1 of the endoscope. In this embodiment, the converging structure is disposed in the head end portion 1 of the endoscope, so that the distance between the water and gas converging point and the water and gas nozzle 7 is greatly reduced, the residual water in the pipeline is less after the water supply is finished and the air supply state is switched, the water and gas nozzle 7 can quickly supply the gas without water drops, and the residual water on the surface of the objective lens window 14 on the head end portion 1 of the endoscope can be quickly and thoroughly cleaned.

As shown in fig. 4, a head end seat 8 is arranged in the head end portion 1 of the endoscope, the converging structure includes a first through hole 91 and a second through hole 92 which are arranged on the rear end surface of the head end seat 8 and extend axially along the head end seat 8, and a third through hole 93 which is arranged on the front end surface of the head end seat 8 and extend axially along the head end seat 8, a connecting cavity 94 is arranged inside the head end seat 8, the front ends of the first through hole 91 and the second through hole 92 are respectively communicated with the connecting cavity 94, the rear end of the third through hole 93 is communicated with the connecting cavity 94, the water feeding pipe 3 is communicated with the first through hole 91, the air feeding pipe 4 is communicated with the second through hole 92, and the water. As shown in fig. 3, the first through hole 91, the second through hole 92, the third through hole 93 and the connection chamber 94 constitute a three-way structure, a distance L from the three-way structure to the water-air nozzle 7 of the head end portion 1 is a common conduit for water and air, and the length of the L is reduced by 90% from the length of L' in fig. 1, so that the remaining water is effectively reduced when the water supply is switched to the air supply at the end of the water supply.

As shown in fig. 3 and 5, a first connecting pipe 101 is arranged in the first through hole 91, and the water supply pipe 3 is sleeved on the first connecting pipe 101; the second through hole 92 is internally provided with a second connecting pipe 102, and the air supply pipe 4 is sleeved on the second connecting pipe 102. The first connecting pipe 101 is a hard pipe which is tightly matched with the first through hole 91 in a sealing manner, the part of the first connecting pipe 101 extending out of the first through hole 91 is conveniently connected with the water supply pipe 3, and the water supply pipe 3 can be sleeved on the first connecting pipe 101 during connection. The second connecting pipe 102 is a hard pipe tightly matched with the second through hole 92 in a sealing manner, the part of the second connecting pipe 102 extending out of the second through hole 92 is conveniently connected with the air supply pipe 4, and the air supply pipe 4 can be sleeved on the second connecting pipe 102 during connection.

As shown in fig. 5, the first connection pipe 101 is provided with a first limit step 103 abutting against the rear end surface of the head end seat 8, and the second connection pipe 102 is provided with a second limit step 104 abutting against the rear end surface of the head end seat 8. The first limiting step 103 limits the position of the first connecting pipe 101, so that the length of the first connecting pipe 101 inserted into the first through hole 91 is smaller than the depth of the first through hole 91, and the first connecting pipe is prevented from blocking the connecting cavity 94; the second limiting step 104 limits the position of the second connecting pipe 102, so that the length of the second connecting pipe 102 inserted into the second through hole 92 is smaller than the depth of the second through hole 92, the second connecting pipe 102 is prevented from blocking the connecting cavity 94, and the first through hole 91, the second through hole 92 and the third through hole 93 are ensured to be communicated all the time.

As shown in fig. 3 and 5, an insulating sleeve 11 is provided between the water vapor nozzle 7 and the third through hole 93. The water-gas nozzle 7 comprises an outlet end and a tubular insertion end, the insertion end is inserted into the third through hole 93, and the insulation sleeve 11 is sleeved on the insertion end. The water-gas nozzle 7 is made of metal material according with biocompatibility, and is electrically isolated through the arranged insulating sleeve 11, so that the electrical safety is ensured.

A water and gas switching valve is provided in an operation part 12 of an endoscope, and a water supply pipe 3 and an air supply pipe 4 are in three states: 1. the water supply pipe 3 and the air supply pipe 4 are both closed, and in this case, neither water nor air is supplied; 2. the water supply pipe 3 is opened and the air supply pipe 4 is closed, in which case only water is supplied; 3. the air supply pipe 4 is opened and the water supply pipe 3 is closed, and only air is supplied in this case. When the water supply device is in a water supply state, water can only enter the water-air nozzle 7 through the water supply pipe 3 because the air supply pipe 4 is blocked; when in the air supply state, the air can only enter the water-air nozzle 7 through the air supply pipe 4 because the water supply pipe 3 is blocked.

The working process of the endoscope water and air feeding assembly is as follows: when the water-air switching valve is switched to the water supply state, water is supplied through the water supply pipe 3, enters the first through hole 91 through the first connecting pipe 101, then enters the connecting cavity 94, finally enters the water-air nozzle 7, is sprayed out from the water-air nozzle 7, and then cleans the objective lens window 14 shown in fig. 6, at the moment, the air supply pipe 4 is in a closed state, and water cannot enter the air supply pipe 4. When the water-air switching valve is switched to the air supply state, air is supplied through the air supply pipe 4, enters the second through hole 92 through the second connecting pipe 102, then enters the connecting cavity 94, finally enters the water-air nozzle 7, and is sprayed out from the water-air nozzle 7 to quickly clean residual water on the objective lens window 14.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The water and air feeding assembly of the endoscope comprises a water feeding pipe (3), an air feeding pipe (4) and a water-air nozzle (7) arranged at the head end part (1) of the endoscope, and is characterized in that the water feeding pipe (3) and the air feeding pipe (4) are arranged in a bending part (2) of the endoscope and extend to the head end part (1) of the endoscope, and a converging structure used for converging the water feeding pipe (3) and the air feeding pipe (4) to the water-air nozzle (7) is arranged in the head end part (1) of the endoscope.

2. The endoscope water and air feeding assembly according to claim 1, wherein a head end seat (8) is provided in the head end portion (1) of the endoscope, the merging structure comprises a first through hole (91) axially extending along the head end seat (8) and a second through hole (92) provided on a rear end surface of the head end seat (8), and a third through hole (93) axially extending along the head end seat (8) and provided on a front end surface of the head end seat (8), a connecting cavity (94) is provided in the head end seat (8), the front ends of the first through hole (91) and the second through hole (92) are respectively communicated with the connecting cavity (94), the rear end of the third through hole (93) is communicated with the connecting cavity (94), the water feeding pipe (3) is communicated with the first through hole (91), the air feeding pipe (4) is communicated with the second through hole (92), and the water and air spraying pipe is communicated with the third through hole (93).

3. The endoscope water and air feeding assembly as recited in claim 2, wherein a first connecting pipe (101) is arranged in the first through hole (91), and the water feeding pipe (3) is sleeved on the first connecting pipe (101); and a second connecting pipe (102) is arranged in the second through hole (92), and the air supply pipe (4) is sleeved on the second connecting pipe (102).

4. The endoscope water and air feeding assembly as recited in claim 3, wherein the first connecting pipe (101) is provided with a first limit step (103) abutting against the rear end face of the head end seat (8), and the second connecting pipe (102) is provided with a second limit step (104) abutting against the rear end face of the head end seat (8).

5. An endoscope water and air feeding assembly according to claim 2, 3 or 4, characterized in that an insulating sleeve (11) is arranged between the water vapor nozzle (7) and the third through hole (93).