CN215457824U

CN215457824U - Catheter tube

Info

Publication number: CN215457824U
Application number: CN202121344831.2U
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: 2022-01-11
Anticipated expiration: 2031-06-16

Abstract

The embodiment of the utility model discloses a catheter, which is used for sleeving an endoscope to observe through the endoscope, and comprises: the endoscope comprises a tube body and an end ring, wherein a main channel formed by the tube wall of the tube body is a first channel and is used for sleeving an endoscope, and a gap is formed between the inner wall of the tube wall and the sleeved endoscope; an end ring is disposed at the distal end of the shaft, the end ring having a first opening in communication with the first channel. The guide tube forms the first channel through the channel for accommodating the endoscope, so that the structure is simpler, the processing is easier, and the production efficiency and the yield are improved.

Description

Catheter tube

Technical Field

The embodiment of the utility model relates to the technical field of medical instruments, in particular to a catheter.

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. Therefore, many catheters used with endoscopes are produced, however, the current endoscope catheters are complex in structure and difficult to process.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, embodiments of the present invention provide a catheter for an endoscope, which has a simple structure and is easy to process.

A catheter for sheathing an endoscope for viewing through the endoscope, the catheter comprising:

the endoscope comprises a tube body, a main channel formed by the tube wall of the tube body is a first channel and is used for sleeving an endoscope, and a gap is formed between the inner wall of the tube wall and the outer wall of the sleeved endoscope;

an end ring disposed at the distal end of the shaft, the end ring having a first opening in communication with the first channel.

In one embodiment, the end ring is provided with a mounting plate and a limiting plate along the axial direction,

the mounting plate is inserted into the pipe wall of the pipe body;

the limiting plate is used for being abutted against a lens of the endoscope so as to limit the position of the endoscope, and the limiting plate and the lens enclose the first opening communicated with the first channel.

In one embodiment, the pipe wall of the pipe body is provided with a second channel, and the end ring is provided with a second opening communicated with the second channel.

In one embodiment, the number of the mounting plates is multiple, the limiting plate is formed between two adjacent mounting plates, the length of the limiting plate in the axial direction is smaller than that of the mounting plates, and the limiting plate is close to the center of the end ring relative to the mounting plates,

and a second channel is formed in the pipe wall of the pipe body, a second opening is formed in the limiting plate, and the second opening is communicated with the second channel through a gap between every two adjacent mounting plates.

In one embodiment, the outer wall of the pipe body extends out relative to the inner wall so as to shield a gap exposed out of the mounting plate relative to the inner wall due to incomplete insertion into the pipe wall of the pipe body.

In one embodiment, the end ring and the tubular body are bonded to each other.

In one embodiment, the end ring is detachably connected to the pipe body.

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

In one embodiment, the pipe wall of the conduit is a hollow structure, and the second channel is formed.

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

The guide tube forms the first channel through the channel for accommodating the endoscope, so that the structure is simpler, the processing is easier, and the production efficiency and the yield are improved. Moreover, the pipe body and the end ring are arranged separately, so that the first opening is easier to process. Further, because the first passage is formed by the main passage, the volume of the catheter is smaller than that of the catheter with the first passage formed on the wall of the catheter. In addition, since the first channel for discharging the liquid is also used for accommodating the endoscope, the liquid to be discharged is discharged through the outer wall of the endoscope, so that the catheter can cool the endoscope while cleaning the lens.

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 view of a catheter according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of one embodiment of the catheter of the present invention;

FIG. 3 is an enlarged view of catheter A of FIG. 2;

FIG. 4 is a partial cross-sectional view of one embodiment of an endoscope assembly of the present invention;

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

Detailed Description

In order to facilitate an understanding of the utility model, the utility model 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 utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. 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 to 3, a catheter 10 is used to sleeve an endoscope 20 to observe through the endoscope 20, the catheter 10 including: a pipe body 100 and an end ring 200 disposed on the pipe body 100. The main channel formed by the tube wall of the tube body 100 is a first channel 110, and is used for sleeving the endoscope 20, a gap is formed between the inner wall of the tube wall and the outer wall of the sleeved endoscope 20, that is, a channel formed by an accommodating space surrounded by the inner wall is the first channel 110, and a gap is formed between the inner wall of the tube wall and the endoscope 20, which can also be understood that the outer diameter of the endoscope 20 is smaller than the diameter of the first channel 110; the end ring 200 is disposed at the distal end of the tube body 100 and has a first opening 210 communicating with the first channel 110 for releasing liquid to wash the lens of the endoscope 20 located in the guide tube 10 or forming a negative pressure region in the first opening region to discharge liquid and/or gas in the opening region.

When the catheter 10 is used, the endoscope 20 is first inserted into the catheter 10, and after the endoscope 20 is inserted, the lens is positioned in the first opening 210 region, and the lesion region is observed by the endoscope 20. When the lens needs to be cleaned, the catheter 10 is filled with liquid through the first channel 110, and the liquid is released through the first opening 210 via the slit to clean the lens. The liquid injected through the first passage 110 may be physiological saline, distilled water, or the like.

The first channel 110 is formed by the channel for accommodating the endoscope, so that the structure of the catheter 10 is simpler and the processing is easier, and further the production efficiency and the yield are improved. Furthermore, because the first passage 110 is formed by the main passage, the catheter volume is smaller than if the first passage were formed in the wall of the catheter. In addition, since the first channel 110 for discharging liquid is also used to house the endoscope 20, the liquid to be discharged is discharged through the outer wall of the endoscope 20, and therefore the catheter 10 can cool down the endoscope 20 while cleaning the lens.

In this embodiment, the tube body 100 and the end ring 200 are fixedly connected and bonded to each other. In other embodiments, the tube body can be detachably connected with the end ring, so that the end ring or the tube body can be replaced as required, and the use flexibility and adjustability of the guide tube are improved. It should be noted that, when the end ring is detachably connected to the pipe body, the mounting plate may be made of an elastic material, and is inserted into the pipe wall by an elastic force so as to adapt to different pipe walls.

In one embodiment, the tube wall of the tube body 100 defines a second channel 120, and the end ring 200 defines a second opening 220 communicating with the second channel 120. Specifically, the tube wall 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 second channel 120 is formed between the outer wall and the inner wall of the tube wall. In other embodiments, the second channel may also be located in a partial region of the tube wall, that is, the tube wall is a solid tube wall, and the second channel is opened on the tube wall.

The first and

second passages

110, 120 can be tailored for use as desired. For example, as shown in fig. 4, the second opening 220 is used for releasing liquid to wash the lens, and the first opening 210 is used for forming a negative pressure region between the first opening 210 and the second opening 220, that is, a negative pressure region is formed in a region between the first opening 210 and the second opening 220, so that the liquid released from the second opening 220 flows into the first opening 210 through the lens of the endoscope 20. As another example, the first channel and the second channel are used interchangeably, i.e., the second opening is used to create a negative pressure and the first channel is used to release the liquid.

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.

When the second opening 220 is used to release liquid and the first opening 210 is used to create negative pressure, the second opening 220 is located at the distal end of the first opening 210 to further increase the flushing force, thereby better cleaning the lens. As shown in fig. 3 and 4, the inner wall of the second opening 220 is inclined toward the lens of the endoscope 20, so that when the liquid is released from the second opening 220, an included angle, for example, an acute angle, is formed between the inner wall and the lens of the endoscope 20, thereby improving the cleaning effect. In other embodiments, the first opening and the second opening may be flush.

In one embodiment, the first opening 210 and the second opening 220 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 210 and the second openings 220 may be multiple, and the multiple openings are distributed along the circumference of the distal end of the catheter 10. For example, the number of the openings is four, and the openings are uniformly distributed on the circumference of the conduit 10, and two first openings 210 and two second openings 220 are arranged in a crossing manner. For another example, the number of the openings is five, two first openings, one second opening, at least two second openings and/or two first openings are adjacently disposed.

In one embodiment, as shown in fig. 5 and 6, the end ring 200 has a plurality of mounting plates 230 extending along the axial direction of the guide tube 10, the mounting plates 230 are inserted into the tube wall of the tube body 100, in this embodiment, the mounting plates 230 are inserted into the second channels 120, and the second openings 220 are communicated with the second channels 120 through gaps between two adjacent mounting plates 230. In other embodiments, the number of the mounting plates may also be one, and after the mounting plates are inserted into the pipe wall, a partial area of the second channel of the pipe wall is communicated with the opening, that is, the mounting plates do not completely block the second channel. Mounting plate 230 makes the connection of end ring 200 to shaft 100 simpler.

In one embodiment, the end ring 200 extends axially along the guide tube 10 to form a limiting plate 240 for abutting against the lens of the endoscope 20 to limit the position of the lens of the endoscope 20, wherein the limiting plate 240 and the lens enclose the first opening 210 communicated with the first channel 110, i.e., the limiting plate 240 and the lens cooperate to form the first opening 210.

The limit plate 240 is formed between adjacent two of the mounting plates 230, the length of the limit plate 240 in the axial direction is less than that of the mounting plates 230, and the limit plate 240 is located near the center of the end ring 200 with respect to the mounting plates 230. The second opening 220 is opened in the limiting plate 240 to communicate the gap between the second opening 220 and the mounting plate 230, and further communicate with the second passage 120. In this embodiment, the number of the limiting plates 240 is multiple, and the limiting plates 240 are disposed at intervals, so that the two adjacent limiting plates 240 and the lens abutted thereto cooperate to form the first opening 210. In other embodiments, there may be only one limiting plate 240.

In one embodiment, the first opening 210 and the second opening 220 are located on the inner wall of the end ring 200, thereby reducing external interference. Specifically, the outer wall of the tube body 100 protrudes with respect to the inner wall (as shown in fig. 3 and 4) to abut against the outer side of the end ring 200, thereby shielding the gap of the mounting plate 230 exposed with respect to the inner wall due to incomplete insertion into the tube wall of the tube body 100. It should be noted that, in other embodiments, the outer wall of the pipe body may also be the same as the length of the inner wall.

In one embodiment, as shown in fig. 1 and 2, the catheter 10 further has a connector 300 disposed at the proximal end of the catheter body 100, the connector 300 is in communication with the first channel 110 and the second channel 120, and specifically, the connector 300 has connector channels respectively in communication with the first channel 110 and the second channel 120 for performing a liquid injection and/or liquid extraction and air exhaust operation through the connector 300.

When the first passage 110 is used to form a negative pressure space, in one embodiment, a sealing member 400 is further disposed on the connector 300 for sealing the proximal end of the first passage 110 to form a negative pressure region. Specifically, a seal 400 is provided at the proximal end of the connector 300, the seal 400 sealing a gap between the endoscope 20 and the proximal end of the connector 300 when the endoscope 20 is inserted into the guide tube 10.

Further, the catheter 10 further includes a connection tube 500 connected to the connector 300 and a flow stopping clip 600 for stopping flow, wherein the flow stopping clip 600 is configured to be disposed on the connection tube 500 communicating with the channel to be closed.

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 utility model as defined by the appended claims.

Claims

1. A catheter for sheathing an endoscope for viewing through the endoscope, the catheter comprising:

2. A guide tube according to claim 1, wherein the end ring has a mounting plate and a limit plate in an axial direction,

the mounting plate is inserted into the pipe wall of the pipe body;

3. A catheter according to claim 1 or 2, wherein the tube body has a second channel formed in the wall thereof, and the end collar has a second opening communicating with the second channel.

4. A guide tube according to claim 2, wherein the mounting plates are plural, the restriction plate is formed between adjacent two of the mounting plates, the length of the restriction plate in the axial direction is smaller than that of the mounting plates, and the restriction plate is located near the center of the end ring with respect to the mounting plates,

5. The catheter according to claim 4, wherein an outer wall of the tube body protrudes relative to an inner wall to shield a gap of the mounting plate exposed relative to the inner wall due to incomplete insertion into the tube wall of the tube body.

6. The catheter of claim 1, wherein the end ring and the shaft are bonded to each other.

7. The catheter of claim 1, wherein the end ring is removably connected to the shaft.

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

9. The catheter as claimed in claim 3, wherein the wall of the catheter is hollow, forming the second channel.

10. The catheter of claim 1, further comprising a connector disposed at a proximal end, the connector being in communication with the first passageway, and a seal disposed on the connector for sealing the proximal end of the first passageway.