CN113397453A

CN113397453A - Catheter and endoscope assembly

Info

Publication number: CN113397453A
Application number: CN202110667512.3A
Authority: CN
Inventors: 宋涛; 官国锋; 张宏巍; 付国亭
Original assignee: Shenzhen Shineyard Medical Device Co ltd
Current assignee: Shenzhen Shineyard Medical Device Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-09-17

Abstract

The embodiment of the present invention discloses a catheter and an endoscope assembly. The catheter is used for sheathing an endoscope. The first opening and the second opening communicated with the second channel, the first opening and the second opening are both located at the distal end of the catheter, the first opening is used for releasing liquid, and the second opening is used for A negative pressure area is formed between the first opening and the second opening, so that the liquid released by the first opening flows into the second opening through the lens of the endoscope. By forming a negative pressure area in the lens area, the above-mentioned catheter can not only make the liquid flush the lens more evenly, avoid cleaning dead corners, increase the flushing force, and make the cleaning more thorough, but also reduce the residual liquid in the lens area, which makes the endoscope observation easier. clear.

Description

Catheter and endoscope assembly

Technical Field

The embodiment of the invention relates to the technical field of medical instruments, in particular to a catheter and an endoscope assembly.

Background

Endoscopes are used for a series of operations such as examination, biopsy, and endoscopic treatment, which are performed inside a human body, and are widely used in clinical practice.

At present, the lens of the endoscope is often blurred due to adhesion of blood, tissues and mucus in the operation process, the imaging of the endoscope can be ensured to be clear only by frequently taking out the endoscope to wipe the lens, a plurality of troubles in operation are brought to an operating doctor, and the operation effect is influenced.

Disclosure of Invention

To solve the above technical problems, embodiments of the present invention provide a catheter and an endoscope assembly capable of cleaning a lens.

A catheter is used for sleeving an endoscope and is provided with a first channel and a second channel which are arranged at intervals, a first opening and a second opening which are respectively communicated with the first channel and the second channel,

the first opening and the second opening are both positioned at the distal end of the catheter, the first opening is used for releasing liquid, and the second opening is used for forming a negative pressure area between the first opening and the second opening, so that the liquid released by the first opening flows into the second opening through a lens of the endoscope.

In one embodiment, the first opening and the second opening are located on the inner wall of the conduit.

In one embodiment, the first opening is located distal to the second opening.

In one embodiment, the first opening is disposed opposite the second opening.

In one embodiment, the first opening and/or the second opening are multiple, and the multiple openings are distributed along the circumference of the far end of the catheter.

In one embodiment, a tube wall of the catheter is a hollow structure, and the first channel and/or the second channel are/is formed between an outer wall and an inner wall of the tube wall.

In one embodiment, the main channel formed by the tube wall of the catheter is the first channel or the second channel and is used for accommodating an endoscope, and a gap is formed between the inner wall of the tube wall of the catheter and the endoscope.

In one embodiment, the guide tube has a tube body and an end ring disposed at the distal end of the tube body, the first opening and the second opening are located on the end ring, and the end ring extends axially along the guide tube to form a limiting plate for abutting against the endoscope lens to limit the position of the endoscope lens.

In one embodiment, the tube wall of the catheter is a hollow structure to form the first channel, the main channel of the catheter forms the second channel, the number of the limiting plates is multiple, the limiting plates are arranged at intervals, so that two adjacent limiting plates and a lens abutted against the limiting plates are matched to form the second opening, and the first opening is arranged on the limiting plates;

or, the pipe wall of pipe is hollow structure, forms the second passageway, the main entrance of pipe forms first passageway, the limiting plate is a plurality of, and is a plurality of the limiting plate interval sets up to make adjacent two the limiting plate forms with the camera lens cooperation that is used for rather than the butt first opening, the second opening set up in on the limiting plate.

In one embodiment, the end ring has a plurality of mounting plates arranged at intervals along the axial direction of the guide tube, the mounting plates are inserted into the first channel or the second channel of the tube wall, and the first opening or the second opening is communicated with the first channel or the second channel through a gap between two adjacent mounting plates.

In one embodiment, the catheter further has a connector disposed at a proximal end, the connector being in communication with the first channel and the second channel, and a seal disposed on the connector for sealing the proximal end of the second channel.

An endoscope assembly comprising the catheter of any of the above, and an endoscope disposed within the catheter.

The catheter can not only enable liquid to more uniformly wash the lens by forming the negative pressure area in the lens area, avoid washing dead angles, increase washing force, enable cleaning to be more thorough, reduce residual liquid in the lens area and enable the endoscope to be more clear during observation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for a person skilled in the art to obtain other drawings based on the drawings without any creative effort.

FIG. 1 is a schematic structural view of one embodiment of an endoscope assembly of the present invention;

FIG. 2 is a partial cross-sectional view of one embodiment of an endoscope assembly of the present invention;

FIG. 3 is a schematic structural view of one embodiment of the catheter of the present invention;

FIG. 4 is an enlarged view of catheter A of FIG. 3;

fig. 5 and 6 are schematic structural diagrams of the end ring of the invention at different angles.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, the endoscope assembly 10 includes: a guide tube 20 and an endoscope 30 disposed within the guide tube 20. The endoscope 30 is detachably provided in the guide tube 20, and the endoscope 30 is inserted into the guide tube 20 in use.

Referring to fig. 2 to 4, the tube 100 of the catheter 20 has a first channel 101 and a second channel 102 disposed at intervals, and a first opening 103 and a second opening 104 respectively connected to the first channel 101 and the second channel 102. Wherein, the first opening 103 and the second opening 104 are both located at the distal end of the catheter 20, the first opening 103 is used for releasing liquid, and the second opening 104 is used for forming a negative pressure area between the first opening 103 and the second opening 104, namely, the negative pressure area is formed in the area between the first opening 103 and the second opening 104, so that the liquid released by the first opening 103 flows into the second opening 104 through the lens of the endoscope 30.

The catheter 20 also has a connector 200 disposed at the proximal end of the body 100 and a seal 300 disposed on the connector 200. The connector 200 is in communication with the first channel 101 and the second channel 102, and specifically, the connector 200 has the connector 200 channels respectively in communication with the first channel 101 and the second channel 102, so as to perform liquid filling and liquid pumping and exhausting operations through the connector 200. The sealing ring is used for sealing the proximal end of the second channel 102 to form a negative pressure region, and specifically, the sealing member 300 is provided at the proximal end of the connector 200, and the sealing member 300 seals a gap between the endoscope 30 and the proximal end of the connector 200 when the endoscope 30 is inserted into the guide tube 20.

Further, the catheter 20 further comprises a connecting tube 400 connected with the connector 200 and a flow stopping clip 500 for stopping flow, wherein the flow stopping clip 500 is used for being arranged on a channel needing to be closed.

It should be noted that any one or more of the connector 200, the sealing member 300, the connecting tube 400 and the flow stop clip 500 may be omitted from the catheter 20 according to actual needs.

When the endoscope assembly 10 is used, the endoscope 30 is first placed in the guide tube 20, and after the endoscope 30 is placed, the lens thereof is positioned in the negative pressure region, and the lesion area is observed through the endoscope 30. When the lens needs to be cleaned, the conduit 20 injects liquid through the first channel 101, the injected liquid is released through the first opening 103, the conduit 20 exhausts the gas and/or liquid in the area of the second opening 104 through the second channel 102, so that the second opening 104 forms a negative pressure region between the two openings, after the negative pressure region is formed, the liquid released by the first opening 103 enters the second channel 102 through the second opening 104 and is exhausted, and the flow direction of the liquid is shown in fig. 2. At this time, the lens of the endoscope 30 is located in the negative pressure region, and the liquid released from the first opening 103 flows to the second opening 104 through the lens to wash the lens of the endoscope 30. The liquid injected through the first channel 101 may be physiological saline, distilled water, or the like.

The catheter 20 can not only enable liquid to more uniformly wash the lens by forming a negative pressure region in the lens region, avoid washing dead angles, increase washing force, enable cleaning to be more thorough, but also reduce residual liquid in the lens region, and enable the endoscope 30 to be clearer when observing.

In one embodiment, the first opening 103 and the second opening 104 are located on the inner wall of the tube wall 110 of the catheter 20, so as to reduce the external interference. And the first opening 103 is located distal to the second opening 104 to further increase the irrigation power for better lens cleaning. As shown in fig. 2 and 4, the inner wall of the first opening is inclined toward the lens of the endoscope, so that when the liquid is released from the first opening, an included angle is formed between the inner wall and the lens of the endoscope, for example, an acute angle is formed, so as to improve the cleaning effect. In other embodiments, the first opening 103 and the second opening 104 may be disposed flush; the inner wall of the first opening can also be arranged parallel to the lens.

In one embodiment, the first opening 103 and the second opening 104 are disposed opposite to each other, so that the lens can be washed by the liquid in a large area, and the lens can be cleaned better. The number of the first openings 103 and the second openings 104 may be multiple, and the multiple openings are distributed along the circumference of the distal end of the catheter 20. For example, the number of the openings is four, the openings are evenly distributed on the periphery of the conduit 20, two first openings 103 and two second openings 104 are provided, and the first openings 103 and the second openings 104 are arranged in a crossing manner. For another example, the number of the openings is five, three first openings 103, two second openings 104, at least two first openings 103 and/or two second openings 104 are disposed adjacently.

It should be noted that, in this embodiment, the first openings 103 and the first channels 101, and the second openings 104 and the second channels 102 are in a one-to-one correspondence relationship, that is, one first opening 103 is correspondingly communicated with one first channel 101, and one second opening 104 is correspondingly communicated with one second channel 102. In other embodiments, there may be a non-one-to-one correspondence relationship, for example, a plurality of first openings 103 correspond to one first channel 101; for another example, one first opening 103 corresponds to a plurality of first channels 101.

In one embodiment, the tube wall 110 of the catheter 20 has a double-layer structure, i.e., an outer wall and an inner wall that are sleeved and spaced apart from each other, and a first channel 101 is formed between the outer wall and the inner wall of the tube wall 110; the main channel formed by the tube wall 110 of the guide tube 20 is the second channel 102, and is used for accommodating the endoscope 30, that is, the channel formed by the accommodating space surrounded by the inner wall of the tube wall 110 is the second channel 102, a gap is formed between the inner wall of the tube wall 110 of the guide tube 20 and the endoscope 30, that is, the outer diameter of the endoscope 30 is smaller than the diameter of the second channel 102, and the guide tube 20 is communicated with the second opening 104 through the gap between the endoscope 30 and the tube wall of the guide tube 20, so that the second opening 104 forms a negative pressure region. At this time, since the second channel 102 for discharging the liquid is also used for housing the endoscope 30, the liquid to be discharged is discharged through the outer wall of the endoscope 30, and therefore the catheter 20 can cool the endoscope 30 while cleaning the lens.

In other embodiments, the two channels may be interchanged with each other, i.e. the tube wall 110 forms the second channel 102 and the main channel is the first channel 101. It should be noted that the two channels may have other configurations. For example, the tube wall forms a first channel 101 and a second channel 102 at the same time, and the main channel is used for placing the endoscope 30, wherein when the tube wall is of a double-layer structure, the two channels are separated by a baffle wall; when the pipe wall is of a non-double-layer structure, the two channels can be channels directly arranged on the pipe wall. For another example, one of the channels is a channel opened on the tube wall, and the other channel is a main channel.

In other embodiments, the conduit 20 may have other numbers of channels, e.g., three, four, etc., which may function the same as the two channels described above, or may have other functions.

In one embodiment, the body 100 of the catheter 20 has a shaft 120 and an end ring 130 disposed at the distal end of the shaft 120, wherein the first opening 103 and the second opening 104 are both located on the end ring 130, and the first channel 101 and the second channel 102 are located on the shaft 120. If necessary, the first opening 103 may be provided in the end ring 130, and the second opening 104 may be located in the tube body 120. In this embodiment, the tube body 120 and the end ring 130 are fixedly connected and bonded to each other. In other embodiments, the shaft 120 can be detachably connected to the end ring 130, so that the end ring 130 or the shaft 120 can be replaced as required, thereby improving the flexibility and adjustability of the catheter 20.

In one embodiment, as shown in fig. 5 and 6, the end ring 130 has a plurality of mounting plates 131 arranged at intervals along the axial direction of the guide tube 20, the mounting plates 131 are inserted into the tube wall, in this embodiment, the tube wall is provided with a first channel 101, the mounting plates 131 are inserted into the first channel 101, and the first opening 103 is communicated with the first channel 101 through a gap between two adjacent mounting plates 131. In other embodiments, when the pipe wall is provided with the second channel 102, the mounting plate 131 can be inserted into the second channel 102. In addition, the mounting plate 131 may be one, and after the mounting plate is inserted into the pipe wall, a partial area of the channel of the pipe wall is communicated with the opening, that is, the mounting plate 131 does not completely block the channel.

It should be noted that, when the end ring 130 is detachably connected to the pipe body 120, the mounting plate 131 may be made of an elastic material, and it is inserted into the pipe wall by an elastic force to adapt to different pipe walls.

In the embodiment shown in fig. 5 and 6, end ring 130 extends axially along guide tube 20 to form a stop plate 132 for abutting against the lens of endoscope 30 to limit the position of the lens of endoscope 30. In this embodiment, the limiting plate 132 is located between the two mounting plates, extends along the gap, and is close to the central area of the end ring 130 relative to the mounting plate 131, and the first opening 103 is opened on the limiting plate 132, so that the gap between the first opening 103 and the mounting plate 131 is communicated, and further communicated with the first channel 101. The outer wall of the tube body 120 extends relative to the inner wall (as shown in fig. 4) to abut against the outside of the end ring 130, and to shield the gap where the mounting plate 131 is exposed relative to the inner wall due to incomplete insertion. In this embodiment, the number of the limiting plates 132 is multiple, and the multiple limiting plates 132 are arranged at intervals, so that two adjacent limiting plates 132 and the lens abutted thereto cooperate to form the second opening 104 and are communicated with the second channel 102. As with the mounting plate 131, there may be only one limiting plate 132 that cooperates with the lens to form the second opening 104.

It should be noted that the description of the present invention and the accompanying drawings illustrate preferred embodiments of the present invention, but the present invention may be embodied in many different forms and is not limited to the embodiments described in the present specification, which are provided as additional limitations to the present invention and to provide a more thorough understanding of the present disclosure. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention described in the specification; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims

1. A catheter for sheathing an endoscope, characterized in that the catheter has a first channel and a second channel arranged at intervals, and a first channel and a second channel respectively communicating with the first channel and the second channel. One opening, second opening,

The first opening and the second opening are both located at the distal end of the catheter, the first opening is used for releasing liquid, and the second opening is used between the first opening and the second opening. A negative pressure area is formed between, so that the liquid released by the first opening flows into the second opening through the lens of the endoscope.

2 . The catheter according to claim 1 , wherein the first opening and the second opening are located on the inner wall of the catheter wall. 3 .

3. The catheter of claim 1, wherein the first opening is located distal to the second opening.

4. The catheter of claim 1, wherein the first opening is disposed opposite the second opening.

5 . The catheter according to claim 1 , wherein the first opening and/or the second opening are multiple, and the multiple openings are distributed along the periphery of the distal end of the catheter. 6 .

6 . The catheter according to claim 1 , wherein the pipe wall of the catheter is a hollow structure, and the first channel and/or the second channel are formed between the outer wall and the inner wall of the pipe wall. 7 .

7. The catheter according to claim 1, wherein the main channel formed by the catheter wall is the first channel or the second channel for accommodating an endoscope, and the catheter tube is the first channel or the second channel. There is a gap between the inner wall of the wall and the endoscope.

8 . The catheter according to claim 1 , wherein the catheter has a pipe body and an end ring disposed at the distal end of the pipe body, and the first opening and the second opening are located at the On the end ring, the end ring extends along the axial direction of the catheter with a limiting plate for abutting with the endoscope lens to limit the position of the endoscope lens.

9 . The catheter according to claim 8 , wherein the pipe wall of the catheter is a hollow structure, forming the first channel, the main channel of the catheter forming the second channel, and the limiting plate. 10 . A plurality of the limiting plates are arranged at intervals, so that the adjacent two limiting plates cooperate with the lens for abutting with them to form the second opening, and the first opening is arranged in the on the limit plate;

Alternatively, the pipe wall of the conduit is a hollow structure to form the second channel, the main channel of the conduit forms the first channel, there are multiple limit plates, and the multiple limit plates are arranged at intervals , so that the two adjacent limit plates cooperate with the lens for abutting therewith to form the first opening, and the second opening is arranged on the limit plate.

10 . The conduit according to claim 9 , wherein the end ring has a plurality of spaced mounting plates extending along the axial direction of the conduit, and the mounting plates are inserted into the first channel of the pipe wall. 11 . Or in the second channel, the first opening or the second opening communicates with the first channel or the second channel through a gap between two adjacent mounting plates.

11. The catheter according to claim 1, characterized in that, the catheter further has a connector provided at the proximal end and a sealing member provided on the connector, the connector is connected with the first channel, The second channel is in communication, and the seal is used to seal the proximal end of the second channel.

12. An endoscope assembly, characterized by comprising the catheter according to any one of claims 1 to 11, and an endoscope disposed in the catheter.