CN214856483U

CN214856483U - Disposable sheath for endoscope and endoscope assembly

Info

Publication number: CN214856483U
Application number: CN202120289352.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Beijing Hotwire Medical Tech Development Co ltd
Current assignee: Beijing Hotwire Medical Tech Development Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-11-26
Anticipated expiration: 2031-02-02

Abstract

The utility model relates to the field of medical instruments, in particular to a disposable sheath for an endoscope and an endoscope assembly. The sheath includes a sleeve that can be pluggably sleeved on the insertion part of the endoscope, and the rear end of the sleeve is provided with a fluid interface, a treatment instrument insertion port and a connection structure. The front end of the sleeve has an end wall, the end wall is provided with a transparent part that can correspond to the light guide body on the insertion part and the camera, and the end wall is provided with a fluid outlet and an outlet for treatment instruments. The tube wall of the cannula is provided with a fluid channel that communicates the fluid interface and the fluid outlet, and a treatment device channel that communicates the treatment device outlet and the treatment device insertion port. In the endoscope assembly, the sleeve is sleeved on the insertion part in a pluggable and removable manner. In this way, the sheath is a one-time-use product, which can effectively prevent the problem of cross-infection caused by incomplete disinfection. At the same time, the fluid channel and the treatment instrument channel are arranged on the disposable product, and the light guide body and the camera are kept on the insertion part of the reusable endoscope, so the cost is greatly reduced, and the inspection cost can also be reduced.

Description

Disposable sheath for endoscope and endoscope assembly

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to disposable sheath and endoscope subassembly for endoscope.

Background

The endoscope can enter the human body through a natural pore canal. Since a lesion which cannot be displayed by X-ray can be seen by an endoscope, it is very useful for a doctor. For example, with the aid of an endoscopist, an ulcer or tumor in the stomach can be observed, and an optimal treatment plan can be developed accordingly.

An endoscope on the market is holistic, and inside the portion of inserting need stretched into human body when the inspection, need wash the disinfection to the portion of inserting when diagnosing different patients, and it is thorough to hardly disinfect after repetitious used, and then leads to cross infection easily.

In order to solve the problem of cross infection, the insertion portion may be a disposable product which is detachable, and the insertion portion needs a turning mechanism, a light guide, an image pickup device, and the like, so that the cost of the disposable insertion portion is high, and the inspection cost is high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The technical problem solved by the utility model is that the existing endoscope can not avoid cross infection and low cost simultaneously.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

an aspect of the present invention is to provide a disposable sheath for an endoscope, which includes a sleeve tube that can be inserted into and pulled out from an insertion portion of the endoscope, and the sleeve tube has opposite front and rear ends. At least the front part of the sleeve is provided with a flexible body. The rear end of the sleeve is provided with a fluid interface, a treatment instrument insertion opening and a connecting structure which can be detachably connected with the endoscope. The front end of the sleeve is provided with an end wall, the end wall is provided with a transparent part which can correspond to the light guide body and the camera on the insertion part, and the end wall is provided with a fluid outlet and a treatment instrument outlet; a fluid channel for communicating the fluid interface with the fluid outlet is arranged in the pipe wall of the sleeve; the tube wall of the sleeve is provided with a treatment instrument channel which communicates the treatment instrument outlet with the treatment instrument insertion opening.

According to the utility model discloses, connection structure is the joint structure, is equipped with at sheathed tube rear end and inserts position indication mark.

According to the utility model, the clamping structure is a clamping head, and a plurality of clamping heads are arranged around the axis of the sleeve; or the clamping structure is a clamping hole, and a plurality of clamping holes are arranged around the axis of the sleeve.

According to the utility model discloses, the sleeve pipe includes open body in both ends and transparent pipe cap, and the transparent pipe cap is fixed on the front end of body, constitutes sheathed tube end wall.

According to the utility model discloses, sheathed tube rear end is constructed for keeping away from the shape of the gradual profile of direction of sheathed tube front end towards.

According to the utility model discloses, the sheathed tube rear end is the joint, and the sheathed tube part except the rear end is flexible pipe.

According to the utility model discloses, the sheathed tube rear end still is equipped with attracts the interface, attracts the interface through handling the apparatus passageway and handling the apparatus export intercommunication, perhaps the end wall of sheathed tube front end still is equipped with the attraction mouth and is equipped with the attraction passageway that will attract mouthful and attract the interface intercommunication in the sheathed tube pipe wall.

According to the utility model, the fluid interface comprises a fluid interface for air supply and a fluid interface for water supply; the fluid outlet comprises a water-gas nozzle, and a nozzle of the water-gas nozzle faces the outlet of the pipe hole of the sleeve; the fluid channel includes a water vapor jetting fluid channel which connects the air supply fluid port and the water supply fluid port with the water vapor nozzle.

According to the utility model, the fluid interface comprises a fluid interface for water supply; the fluid interface comprises a fluid outlet for attaching water; the fluid passage includes a water-attaching fluid passage that communicates the water-attaching fluid port and the water-attaching fluid outlet.

Another aspect of the present invention provides an endoscope assembly including an endoscope having an insertion portion with a camera and a light guide body, the endoscope assembly including any one of the above-described disposable sheaths; the sleeve is sleeved on the insertion part in a pluggable manner, the endoscope is provided with a connection matching structure, and the connection matching structure is detachably connected with the connection structure; the transparent portion corresponds to the camera and the light guide.

(III) advantageous effects

The utility model has the advantages that:

the utility model discloses a sheath among disposable sheath and endoscope subassembly for endoscope is disposable product, and it can keep apart the human body and the inserting part of endoscope completely with the good sealing of inserting part of endoscope, can prevent effectively because of the not thorough cross infection problem that leads to of disinfection. And simultaneously, will have simultaneously for prior art and turn to the structure, leaded light functional structure, formation of image functional structure, fluid transport structure, the whole product as disposable use of the portion of inserting of apparatus insertion structure, the utility model discloses separate endoscope formation of image function and the part that turns to the function and the structure of causing the transport fluid and the apparatus insertion function of cross infection problem easily, set up fluid passage and treatment apparatus passageway in the sheath, and the sheath does not include and turns to the structure, leaded light functional structure and formation of image functional structure, will turn to the structure soon, leaded light functional structure and formation of image functional structure remain on used repeatedly's the portion of inserting of endoscope, cost greatly reduced, and then inspection expense also can reduce.

Drawings

FIG. 1 is a schematic front view of a sheath in an endoscope assembly according to an embodiment;

FIG. 2 is a schematic top view of the sheath of FIG. 1;

FIG. 3 is a schematic front view of an endoscope in an endoscope assembly according to an exemplary embodiment;

fig. 4 is a schematic front end view of an endoscope assembly according to an embodiment.

[ description of reference ]

1: an insertion portion; 2: a sleeve; 3: a connecting structure; 4: an end wall; 5: a light guide; 6: a camera; 7: a tube hole; 8: a treatment instrument inlet; 9: a treatment instrument outlet; 10: a pipe body; 11: a transparent cap; 12: a joint; 13: a suction fitting; 14: a fluid port for air supply; 15: a fluid port for water supply; 16: a water-air nozzle; 17: a fluid port for attaching water; 18: a fluid outlet for the additional water.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. Herein, the "front" and "rear" are referred to as being oriented such that the side closer to the human body in use is "front".

Referring to fig. 1 to 4, the present embodiment provides an endoscope assembly including an endoscope (shown mainly in fig. 3) and a disposable sheath (shown mainly in fig. 1 and 2, hereinafter simply referred to as "sheath").

Referring to fig. 3, the endoscope has an insertion portion 1, and a front portion of the insertion portion 1 is a flexible portion for insertion into a human body. The insertion portion 1 has a light guide 5 and an image pickup device 6 therein. The light guide 5 transmits light from the light source of the endoscope to the distal end of the insertion portion 1, and facilitates the doctor to provide sufficient brightness during diagnosis and treatment. The camera 6 takes real-time images of the human body and transmits the real-time images of the human body to the display, so that a doctor can observe images of an operation part in the human body in real time. Set up two light conductors 5 in this embodiment, two light conductors 5 are isosceles triangle with camera 6 and arrange, and two light conductors 5 are located two base angles. The structures of the light guide 5 and the camera 6 and the connection relationship with other structures are conventional, and the turning structure for controlling the turning of the insertion portion is also conventional and will not be described again. In particular, the handle of the endoscope has a coupling mating structure thereon for detachable coupling with the sheath. The endoscope is a reusable device.

Referring to fig. 1 to 4, the sheath includes a sleeve 2 capable of being removably fitted over an insertion portion 1 of the endoscope, the sleeve 2 having a circular tube hole 7 to receive the insertion portion 1. Before a diagnosis, the sleeve 2 is fitted to the circular insertion portion 1 of the endoscope, and after the diagnosis is completed, the sleeve 2 is pulled out from the insertion portion 1 and discarded. Thus, the sheath is a single use only product.

Specifically, the sleeve 2 has two ends including opposite front and rear ends, and the rear end of the sleeve 2 is open and can be fitted over the insertion portion 1 from the rear to the front. At least the front part of the sleeve 2 is a flexible body to cooperate with the flexible part of the front part of the insertion part 1 to curve together in the human body.

The rear end of the sleeve 2 is provided with a connecting structure 3 which can be detachably connected with the endoscope, and the connecting structure 3 is detachably connected with a connecting matching structure on the endoscope after the sleeve 2 is sleeved on the insertion part 1 of the endoscope, so that the sleeve 2 is formed, namely, the sheath is detachably connected with the endoscope, and thus, after the sleeve is used for one patient, the sheath can be detached from the endoscope.

In the present embodiment, the connection and matching structure is provided on the handle of the endoscope, but may be provided at other positions of the endoscope as long as the connection and matching structure is not inserted into the human body during the diagnosis and treatment. Preferably, the connection structure 3 is a snap-fit structure, and an insertion direction indication mark is provided at the rear end of the sleeve 2, so that the snap-fit of the connection structure 3 and the connection matching structure is smoothly formed. In the present embodiment, as shown in fig. 1, the latching structure is four latching holes disposed around the axis of the sleeve 2, and correspondingly, the connecting and matching structure is four locking heads. Of course, the clamping structure can also be a clamping head (such as a clamping spring), and the connecting and matching structure is a clamping hole. In addition, the locking bar can be clamped. The clamping structure is convenient to insert and pull out, low in manufacturing cost and suitable for one-time connection.

The front end of the sleeve 2 has an end wall 4, and the end wall 4 abuts against the front end surface of the insertion section 1 of the endoscope. The end wall 4 is provided with a transparent portion that can correspond to the light guide 5 and the camera 6 of the insertion portion 1, so that the transparent portion corresponds to the camera 6 and the light guide 5, and light propagation and shooting of the light guide 5 and the camera 6 can be performed through the transparent portion, which facilitates illumination observation and image data collection, and does not hinder observation of a doctor in a human body.

In the present embodiment, the sleeve 2 includes a tube body 10 opened at both ends and a transparent cap 11, the transparent cap 11 is fixed to the front end of the tube body 10 to constitute the end wall 4 of the sleeve 2, and the transparent cap 11 is preferably made of transparent resin. In this embodiment, the tube 10 may be transparent, non-transparent, or translucent. Of course, in other embodiments, the front end of the sleeve 2 may be an integral part, and the front end of the sleeve 2 is transparent as a whole. Thus, in the present embodiment, the transparent portion is obtained by providing the transparent cap 11, but the present invention is not limited thereto, and the transparent portion may be a plurality of transparent regions corresponding to the light guide 5 and the image pickup device 6, may be one transparent region corresponding to both the light guide 5 and the image pickup device 6, or may be one transparent portion corresponding to the position and shape of the distal end of the insertion portion 1, and therefore, the transparent portion may be provided in various embodiments as long as the light guide 5 and the image pickup device 6 can perform normal functions.

Further, the pipe 10 is a rotary body, and may be a circular pipe with an equal outer diameter or a circular pipe with a non-equal outer diameter. In the present embodiment, the rear end of the tube body 10 forms a joint 12, and the joint 12 is configured in a shape that is tapered toward a direction away from the front end of the sleeve 2 so as to be connected to the handle of the endoscope. The connector 12 may be integrally formed with other tubular structures or may be fixedly connected thereto. For example, the joint 12 may be made of a hard material or a flexible material to facilitate the connection operation with the endoscope, and the portion of the tube body 10 other than the joint 12 is a flexible circular tube.

Further, the connector 12 is provided with an air supply fluid port 14 and a water supply fluid port 15, the end wall 4 is provided with a water vapor nozzle 16, a nozzle of the water vapor nozzle 16 faces the direction of the outlet of the pipe hole of the sleeve so that the fluid ejected from the water vapor nozzle 16 moves toward the position of the transparent portion corresponding to the light guide and the camera, and the pipe wall of the sleeve 2 is provided with a water vapor ejection fluid passage which communicates the air supply fluid port 14 and the water supply fluid port 15 together with the water vapor nozzle 16. If only water is supplied to the water supply fluid interface 15, water is sprayed out from the water vapor nozzle 16 through the water vapor spraying fluid channel, so that transparent parts corresponding to the light guide body and the camera can be washed, and the phenomenon that the acquired images are affected by the fact that the transparent parts are stained with foreign matters is prevented; if only air is supplied to the air supply fluid interface 14, the air is sprayed out from the water vapor nozzle 16 through the water vapor spraying fluid channel to blow dry water drops on the transparent parts corresponding to the light guide body and the camera; if air is supplied to the air supply fluid port 14 and water is supplied to the water supply fluid port 15, the air and the water are mixed in the water vapor discharge fluid passage and the water vapor mixture is discharged from the water vapor nozzle 16. Of course, in other embodiments, the air supply fluid outlet and the water supply fluid outlet may be provided separately on the end wall 4, and a separate fluid channel may be provided on the pipe wall of the sleeve 2 to communicate the air supply fluid port 14 and the air supply fluid outlet, and to communicate the water supply fluid port 15 and the water supply fluid outlet. Alternatively, the air supply fluid port 14 and the water supply fluid port 15 may be combined into one fluid port.

Further, a fluid port 17 for additional water is provided in the joint 12 of the sleeve 2, a fluid outlet 18 for additional water is provided in the end wall 4, the fluid outlet 18 for additional water is directed directly in front of the sleeve 2, and a fluid passage for additional water is provided in the wall of the sleeve 2 to communicate the fluid port 17 for additional water with the fluid outlet 18 for additional water. When water is supplied to the fluid port 17 for water supply, the mucus in the chamber can be washed.

Further, a treatment instrument insertion port 8 is provided in a joint 12 of the sleeve 2, the treatment instrument insertion port 8 faces directly in front of the sleeve 2, a treatment instrument outlet 9 is provided in the end wall 4, and a treatment instrument channel for communicating the treatment instrument outlet 9 with the treatment instrument insertion port 8 is provided in a tube wall of the sleeve 2, and this arrangement allows an endoscopic treatment instrument to pass therethrough, thereby realizing a sampling function.

Further, a suction port 13 is arranged on the joint 12 of the sleeve 2, the suction port 13 is communicated with the outlet 9 of the treatment instrument through a treatment instrument channel, the negative pressure suction function is realized, and redundant liquid in the cavity is extracted. In other embodiments, a separate suction port may be provided on the end wall 4, and a separate suction channel communicating the suction port with the suction port 13 may be provided in the tube wall of the cannula 2.

In the present embodiment, the additional water supply fluid port 17, the air supply fluid port 14, the water supply fluid port 15, and the treatment instrument insertion port 8 are arranged in the front-to-rear direction and are positioned on the same straight line, the suction port 13 is positioned on the side of the treatment instrument insertion port 8, and the suction port 13 is directly connected to the treatment instrument insertion port 8.

In the present embodiment, the axis of the tube hole in the tube body 10 is offset from the axis of the tube body 10 (i.e. the axis of the cylinder where the outer circumferential surface of the tube body 10 is located), so that the tube wall of the tube body 10 is uneven in thickness in the same cross section, and thus the transparent portion on the end wall 4 is at least aligned with the tube hole, and the treatment device outlet 9 on the end wall 4 corresponds to a thicker region in the tube body 10, and the additional water fluid outlet 18 and the water vapor nozzle 16 are respectively located on both sides of the treatment device outlet 9. By the arrangement, the size of the front end of the sheath can be reduced as much as possible under the condition that the normal use of each fluid outlet, the treatment instrument outlet 9, the light guide body and the camera is ensured, the operation on a human body is facilitated, and the discomfort of the human body is reduced.

Thus, in this embodiment, the sheath is a disposable product, which can seal the insertion portion 1 of the endoscope well, completely isolate the human body from the insertion portion 1 of the endoscope, and effectively prevent cross-infection caused by incomplete sterilization. Meanwhile, compared with the prior art in which the whole insertion part with the turning structure, the light guide function structure, the imaging function structure, the fluid conveying structure and the instrument insertion structure is used as a disposable product, the present embodiment separates the components of the light guide function, the endoscope imaging function and the turning function from the structures of the water feeding function, the air feeding function and the instrument insertion function which easily cause the cross infection problem, and arranges the fluid channel and the treatment instrument channel in the disposable sheath, and the sheath does not include the light guide body 5, the camera 6 and the turning structure which are high in cost, namely, the light guide body 5, the camera 6 and the turning structure are retained in the endoscope and the insertion part 1 thereof for repeated use, so that the cost is greatly reduced, and the inspection cost can also be reduced.

At the same time, when the suction function is set, the related structure is also set in the shield, reducing the risk of cross-infection. And the interfaces and outlets of all the channels are arranged on the protective cover, so that on one hand, the problem of conduction failure caused by separate arrangement can be avoided, and on the other hand, cross infection is completely avoided. Of course, in this embodiment, a plurality of fluid channels with different functions and corresponding interfaces and outlets are provided, and these structures may be selectively provided in other embodiments of the present invention.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A disposable sheath for an endoscope, comprising a sleeve (2) that can be fitted over an insertion portion (1) of the endoscope in an insertable manner, the sleeve (2) having opposite front and rear ends;

at least the front part of the sleeve (2) is a flexible body;

the rear end of the sleeve (2) is provided with a fluid interface, a treatment instrument insertion opening (8) and a connecting structure (3) which can be detachably connected with the endoscope;

the front end of the sleeve (2) is provided with an end wall (4), the end wall (4) is provided with a transparent part which can correspond to a light guide body (5) and an image pick-up device (6) on the insertion part (1), and the end wall (4) is provided with a fluid outlet and a treatment instrument outlet (9);

a fluid channel for communicating the fluid interface with the fluid outlet is arranged in the pipe wall of the sleeve (2);

a treatment instrument channel for communicating the treatment instrument outlet (9) with the treatment instrument insertion opening (8) is arranged in the tube wall of the sleeve (2).

2. The disposable sheath for an endoscope according to claim 1,

the connecting structure (3) is a clamping structure, and the rear end of the sleeve (2) is provided with an insertion position indication mark.

3. The disposable sheath for an endoscope according to claim 2,

the clamping structure is a clamping head, and a plurality of clamping heads are arranged around the axis of the sleeve (2); or

The clamping structure is a clamping hole, and a plurality of clamping holes are formed around the axis of the sleeve (2).

4. The disposable sheath for an endoscope according to claim 1,

the sleeve (2) comprises a tube body (10) with two open ends and a transparent tube cap (11), wherein the transparent tube cap (11) is fixed on the front end of the tube body (10) to form the end wall (4) of the sleeve (2).

5. The disposable sheath for an endoscope according to claim 1,

the rear end of the sleeve (2) is configured in a shape that is tapered in a direction away from the front end of the sleeve (2).

6. The disposable sheath for an endoscope according to claim 1 or 5,

the rear end of the sleeve (2) is provided with a joint (12), and the part of the sleeve (2) except the rear end is a flexible round pipe.

7. The disposable sheath for an endoscope according to claim 1,

the rear end of the sleeve (2) is also provided with a suction interface (13), the suction interface (13) is communicated with the treatment instrument outlet (9) through the treatment instrument channel, or the end wall (4) at the front end of the sleeve (2) is also provided with a suction port, and a suction channel for communicating the suction port with the suction interface (13) is arranged in the tube wall of the sleeve (2).

8. The disposable sheath for an endoscope according to claim 1,

the fluid interface comprises a fluid interface (14) for air supply and a fluid interface (15) for water supply;

the fluid outlet comprises a water-gas nozzle (16), and the nozzle of the water-gas nozzle (16) faces the outlet direction of the pipe hole (7) of the sleeve;

the fluid channel includes a water vapor discharge fluid channel which communicates the air supply fluid port (14) and the water supply fluid port (15) with the water vapor nozzle (16).

9. The disposable sheath for an endoscope according to claim 1,

the fluid interface comprises a fluid interface (17) for attaching water;

the fluid interface comprises a fluid outlet (18) for the additional water;

the fluid passage includes a water-supply fluid passage that communicates the water-supply fluid port (17) and the water-supply fluid outlet (18).

10. An endoscope assembly comprising an endoscope having an insertion portion (1), the insertion portion (1) having therein an image pickup device (6) and a light guide body (5), characterized by comprising the disposable sheath for an endoscope of any one of claims 1 to 9;

the sleeve (2) is sleeved on the insertion part (1) in a pluggable manner, a connection matching structure is arranged on the endoscope, and the connection matching structure is detachably connected with the connection structure (3);

the transparent portion corresponds to the camera (6) and the light guide (5).