CN211749473U - A flexible and bendable coiled tube for endoscope - Google Patents

Abstract

The utility model belongs to the technical field of endoscopes, in particular to a flexible and bendable coil tube for endoscopes. The technical scheme is as follows: a flexible bending coil tube for endoscope comprises a plurality of connecting rings, one side of the connecting ring is fixed with a connecting lug, the other end of the connecting ring is fixed with a connecting concave lug, and one connecting ring of the connecting ring is fixed with a connecting lug. A connecting piece is arranged between the ear and the connecting concave ear of the adjacent connecting ring, one end of the connecting piece is fixed with the connecting lug or connecting concave ear of a connecting ring, the connecting piece includes a polished rod segment, and the connecting lug of the adjacent connecting ring is Or the connecting concave ear is sleeved on the polished rod section, and the length of the polished rod section is greater than the thickness of the connecting lug or the connecting concave lug sleeved on the polished rod section. The utility model provides a coiled tube for an endoscope with a long polished rod section to ensure flexible tilting or passive bending.

Description

A flexible and bendable coiled tube for endoscope

technical field

The utility model belongs to the technical field of endoscopes, in particular to a flexible and bendable coil tube for endoscopes.

Background technique

When the existing endoscopes bend and change the direction of the head at the bending angle, they are all bent by the built-in snake bone by pulling the control wire connected with the snake bone, and the snake bone is used by the joints of each section. The connecting shafts are connected to each other and then rotated axially to work.

The utility model patent with the patent application number CN200920207896.5 discloses an endoscope snake bone, which includes: a snake bone end section, a snake bone root end section, a joint for connecting the snake bone end section and the snake bone root The middle end connecting section of the snake bone of the end section and the operation wire for operating the direction change of the snake bone of the endoscope; the cross fitting connection between the end section of the snake bone, the root end section of the snake bone and the middle end connecting section of the snake bone , the snake bone end section, the snake bone root end section and the snake bone middle end connecting section are provided with connecting holes, and the operation wire connects the snake bone end section, the snake bone root end section and the snake bone through the connecting holes The end connecting sections are connected to each other; the connecting parts of the snake bone end section, the snake bone root end section and the snake bone middle end connecting section are crossed and connected to each other, and the operation line is connected with the snake bone end section and the snake bone root end section through the connecting hole. It is connected with the connecting joint at the middle end of the snake bone, and the operation wire is involved to control the turning of the endoscopic snake bone.

However, there is no gap between the connecting parts of the snake-bone joints in the prior art, and the force required when the snake-bone joints are tilted relative to the adjacent snake-bone joints is relatively large. Therefore, the existing snake bone is difficult to bend, or cannot be bent to a specific angle, and the operation is difficult. When the connection between the two snake-bone joints in the prior art is too tight, the snake-bone cannot be properly adjusted in the vertical direction of the tilting direction, so that the snake-bone cannot be passively bent, and the forward-movement of the snake-bone is difficult.

Utility model content

In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a coiled tube for an endoscope with a long polished rod section to ensure flexible tilting or passive bending.

The technical scheme adopted by the utility model is:

A flexible bending coil tube for endoscope includes several connecting rings, one side of the connecting ring is fixed with a connecting lug, the other end of the connecting ring is fixed with a connecting concave lug, and the connecting lug of one connecting ring is connected to the adjacent one. A connecting piece is arranged between the connecting concave ears of the connecting ring, and one end of the connecting piece is fixed with the connecting lug or connecting concave ear of a connecting ring, and the connecting piece includes a polished rod segment, and the connecting lug or connecting concave ear sleeve of the adjacent connecting ring It is arranged on the polished rod section, and the length of the polished rod section is greater than the thickness of the connecting lug or the connecting concave lug sleeved on the polished rod section.

Preferably, the connecting piece further includes a fixing section, the fixing end is fixed with the polished rod section, the connecting concave ear of the connecting ring is sleeved on the polished rod section, and the connecting lug of the adjacent connecting ring is fixed with the fixing section.

Preferably, one end of the polished rod segment away from the fixing segment is fixed with a baffle for blocking the connecting concave lug.

Preferably, the fixing section is riveted and fixed with the connecting lug.

Preferably, the connector is provided with a through hole, the through hole penetrates the polished rod section and the fixed section, the through hole is connected with a fastener, the fastener is a pin or a screw, and the diameter of the polished rod section is larger than that of the fixed section.

Preferably, one end of the polished rod segment is fixed on the connecting concave lug of the connecting ring, the connecting lug of the adjacent connecting ring is sleeved on the polished rod segment, and one end of the polished rod segment away from the connecting concave ear is fixed with several blocks.

Preferably, the number of the blocks is two, and the two blocks are located on both sides of the polished rod section.

Preferably, the polished rod segment is provided with a central hole.

The beneficial effects of the present utility model are:

1. One end of the connector of the present utility model is fixed, and the length of the polished rod section of the connector is greater than the thickness of the connecting lug or the connecting concave lug sleeved on the polished rod section, therefore, the connecting ring sleeved on the polished rod section can Flexible tilting to avoid the situation that the connecting ring is stuck. The connecting ring can be flexibly tilted, so that the coil tube can be more easily bent to a specific angle, ensuring that when the endoscope is used, the end of the catheter of the endoscope can be conveniently and actively bent to a specific degree. There are gaps on both sides of the connecting lugs or the connecting concave lugs, then the connecting lugs or the connecting concave lugs can now be inclined at a certain angle to the polished rod section, and the coil pipe can be passively bent at a certain angle in the vertical direction of the tilting direction, so that the catheter can be bent at a certain angle. The end of the catheter is easier to move forward, while reducing the injury of the catheter end to the human body.

2. The connecting concave lugs of the connecting ring are sleeved on the polished rod section, and the connecting lugs of the adjacent connecting rings are fixed with the fixed section, so that the two connecting rings will not squeeze each other, and the connecting concave sleeves on the polished rod section The ears can be tilted flexibly. Since the connecting lugs of one connecting ring are fixed to the fixed section, and the connecting concave lugs of the other connecting ring are sleeved on the polished rod section, the connecting concave lugs sleeved on the polished rod section can slide accordingly or generate a certain amount of relative to the polished rod section. Tilt. Therefore, the connecting concave lugs sleeved on the polished rod section can generate passive inclination, and the coiled tube can be passively bent to a certain extent when it is too squeezed during movement, which is convenient for the movement of the coiled tube.

3. The rib can block the connecting concave lug to prevent the connecting concave lug from falling out of the polished rod section. After the connecting concave ear is limited by the retaining edge, the connecting ring can be connected reliably, avoiding the tripping of the adjacent connecting ring, and ensuring the reliable connection between the snake bones. The connecting concave lug is always sleeved on the polished rod segment, and one side of the connecting concave lug can be blocked by the rib, and the other side of the connecting concave lug can be limited by the connecting lug of another connecting ring to ensure that the connecting concave lug is always sleeved. It is arranged on the polished rod section to ensure reliable connection under the condition that there is a flexible moving space between the connecting rings.

4. If the fixed section is riveted and fixed with the connecting lug, the fixed section can be fixed with the connecting lug to ensure reliable connection. After the connecting lug on the connecting ring is fixed, the connecting lug will not squeeze the connecting concave lug on the polished rod segment, avoid the situation that the connecting lug and the connecting concave lug are stuck, and ensure that the connecting ring can be relative to the adjacent connecting lug. The connecting ring can be flexibly tilted or passively bent.

5. If a pin or screw is connected in the through hole of the connector, the pin or screw can block one end of the fixed section. The diameter of the polished rod section is larger than the diameter of the fixed section, the polished rod section can block the other section of the fixed section, and the connecting lugs can be limited on the fixed section to prevent the connecting lugs from squeezing the connecting lugs on the adjacent connecting rings . The pins or screws are easy to disassemble and install, and the connecting ring can be connected quickly and reliably to ensure that the coil pipe can be used normally.

6. The connecting lug of the connecting ring is sleeved on the polished rod segment, and one end of the polished rod segment is fixed with the connecting concave ear of the other connecting ring, then the connecting concave ear forms a blocking edge on one side of the polished rod segment. A plurality of blocks are fixed at one end of the polished rod segment away from the connecting concave ear, and the blocks form a blocking edge on the other side of the polished rod segment. The length of the polished rod segment is greater than the thickness of the connecting lugs sleeved on it, then when the connecting lugs are sleeved on the polished rod segment, the connecting lugs can rotate or slide freely, and the adjacent connecting rings can tilt flexibly . The connecting lug can also be inclined relative to the polished rod section, so that the coil tube can be passively bent to a certain extent, which is convenient for the movement of the endoscope catheter.

7. The two blocks can block the side of the polished rod segment away from the connecting concave lug, so the connecting lug will not come out of the polished rod segment, ensuring reliable connection between adjacent connecting rings. The two blocks can limit the positions on both sides of the connecting lugs, so that the connecting lugs can be stably sleeved on the polished rod section to prevent the connecting lugs from falling off.

8. There is a central hole in the polished rod section, so the weight of the polished rod section is reduced, and the weight of the entire coiled tube is correspondingly reduced. After the coiled tube is installed in the catheter, the weight of the coiled tube is lighter, which ensures the flexibility of the bending of the catheter.

The beneficial effects of the present invention are not limited to this description. For better understanding, a more detailed description is given in the specific embodiment section.

Additional advantages, objects, and features of the present invention will be set forth in part in the following description, and in part will become apparent to those of ordinary skill in the art upon study of the following, or may be learned from practice of the present invention. informed. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Those skilled in the art will appreciate that the objects and advantages that can be achieved with the present invention are not limited to those specifically described above, and the above and other objects that can be achieved by the present invention will be more clearly understood from the following detailed description.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts.

Fig. 1 is the structural representation of coil pipe;

Fig. 2 is the structural representation of the present utility model in embodiment 1;

Fig. 3 is the partial enlarged view of A place in Fig. 2;

Fig. 4 is the structural representation of the present utility model in embodiment 2;

Fig. 5 is a partial enlarged view at B in Fig. 4;

Fig. 6 is the structural representation of the present utility model in embodiment 3;

FIG. 7 is a schematic diagram of the structure at C in FIG. 6 .

In the figure: 1-connecting ring; 2-connecting lug; 3-connecting concave ear; 4-connecting piece; 41-polished rod segment; 42-fixed segment; 43-fastener; 411-rib; 412-stop ; 413 - Center hole.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "first" and "second" are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or indicating the number of technical features indicated. . Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Example 1

As shown in FIGS. 1 to 3 , the coiled tube for endoscope in this embodiment includes several connecting rings 1 , one side of the connecting ring 1 is fixed with a connecting lug 2 , and the other end of the connecting ring 1 is fixed with a connecting concave lug 3 , a connecting piece 4 is provided between the connecting lug 2 of a connecting ring 1 and the connecting concave lug 3 of the adjacent connecting ring 1, and one end of the connecting piece 4 is connected to the connecting lug 2 of a connecting ring 1 or the connecting concave lug 3 Fixed, the connector 4 includes a polished rod section 41, the connecting lugs 2 or the connecting concave lugs 3 of the adjacent connecting ring 1 are sleeved on the polished rod section 41, and the length of the polished rod section 41 is greater than the connecting lug sleeved on the polished rod section 41. 2 or the thickness of the connecting lug 3.

One end of the connector 4 of the present invention is fixed, and the length of the polished rod section 41 of the connector 4 is greater than the thickness of the connecting lug 2 or the connecting concave lug 3 sleeved on the polished rod section 41. Therefore, the polished rod section 41 is covered with The provided connecting ring 1 can be tilted flexibly to avoid the situation that the connecting ring 1 is stuck. The connecting ring 1 can be tilted flexibly, so that the coil tube can be more easily bent to a specific angle, ensuring that when the endoscope is used, the end of the catheter of the endoscope can be conveniently and actively bent to a specific degree. A gap is reserved on both sides of the connecting lug 2 or the connecting concave lug 3, then the connecting lug 2 or the connecting concave lug 3 can now be inclined at a certain angle to the polished rod section 41, and the coil pipe can be passively bent along the vertical direction of the tilting direction. A certain angle makes it easier for the end of the catheter to move forward, and at the same time reduces the damage to the human body caused by the end of the catheter.

Further, the connecting piece 4 also includes a fixed section 42, the fixed end is fixed with the polished rod section 41, the connecting concave lugs 3 of the connecting ring 1 are sleeved on the polished rod section 41, and the connecting lugs 2 of the adjacent connecting ring 1 are fixed to the polished rod section 41. Segment 42 is fixed. The connecting lugs 3 of the connecting ring 1 are sleeved on the polished rod section 41, and the connecting lugs 2 of the adjacent connecting rings 1 are fixed with the fixing section 42, so that the two connecting rings 1 will not squeeze each other, and are sleeved on the polished rod. The connecting lugs 3 on the segment 41 can be tilted flexibly. Since the connecting lugs 2 of one connecting ring 1 are fixed with the fixing segment 42, and the connecting lugs 3 of the other connecting ring 1 are sleeved on the polished rod segment 41, the connecting concave lugs 3 sleeved on the polished rod segment 41 can correspond to Sliding or tilting relative to the polished rod section 41 . Therefore, the connecting concave lugs 3 sleeved on the polished rod section 41 can generate passive inclination, and the coiled tube can be passively bent to a certain extent when it is moved too much, so as to facilitate the movement of the coiled tube.

Furthermore, the end of the polished rod segment 41 away from the fixing segment 42 is fixed with a retaining edge 411 for blocking the connecting concave lug 3 . The baffles 411 can block the connecting concave lugs 3 to prevent the connecting concave lugs 3 from falling out of the polished rod section 41 . After the connecting concave lugs 3 are limited by the ribs 411, the connecting rings 1 can be connected reliably, avoiding the tripping of the adjacent connecting rings 1, and ensuring the reliable connection between the snake bones. The connecting concave lug 3 is always sleeved on the polished rod segment 41, and one side of the connecting concave lug 3 can be blocked by the retaining edge 411, and the other side of the connecting concave lug 3 can be limited by the connecting lug 2 of the other connecting ring 1 , to ensure that the connecting concave lugs 3 are always sleeved on the polished rod segment 41, and the connection is reliable under the condition that there is a flexible movement space between the connecting rings 1.

Furthermore, the fixing section 42 is riveted and fixed with the connecting lug 2 . If the fixing section 42 is riveted and fixed with the connecting lug 2, the fixing section 42 can be fixed with the connecting lug 2 to ensure reliable connection. After the connecting lugs 2 on the connecting ring 1 are fixed, the connecting lugs 2 will not squeeze the connecting concave lugs 3 on the polished rod segment 41, so as to avoid the situation that the connecting lugs 2 and the connecting concave lugs 3 are stuck, and ensure that The connecting rings 1 can be flexibly tilted or passively bent relative to the adjacent connecting rings 1 .

Example 2

As shown in FIGS. 1 , 4 and 5 , the coiled tube for endoscope in this embodiment includes several connecting rings 1 , one side of the connecting ring 1 is fixed with a connecting lug 2 , and the other end of the connecting ring 1 is fixed with a connecting ring 1 . Recess 3, a connecting piece 4 is provided between the connecting lug 2 of a connecting ring 1 and the connecting concave 3 of the adjacent connecting ring 1, and one end of the connecting piece 4 is connected with the connecting lug 2 of a connecting ring 1 or The concave lug 3 is fixed, the connecting piece 4 includes a polished rod segment 41, the connecting lug 2 or the connecting concave lug 3 of the adjacent connecting ring 1 is sleeved on the polished rod segment 41, and the length of the polished rod segment 41 is greater than that sleeved on the polished rod segment 41. Thickness of connecting lug 2 or connecting lug 3.

One end of the connector 4 of the present invention is fixed, and the length of the polished rod section 41 of the connector 4 is greater than the thickness of the connecting lug 2 or the connecting concave lug 3 sleeved on the polished rod section 41. Therefore, the polished rod section 41 is covered with The provided connecting ring 1 can be tilted flexibly to avoid the situation that the connecting ring 1 is stuck. The connecting ring 1 can be tilted flexibly, so that the coil tube can be more easily bent to a specific angle, ensuring that when the endoscope is used, the end of the catheter of the endoscope can be conveniently and actively bent to a specific degree. A gap is reserved on both sides of the connecting lug 2 or the connecting concave lug 3, then the connecting lug 2 or the connecting concave lug 3 can now be inclined at a certain angle to the polished rod section 41, and the coil pipe can be passively bent along the vertical direction of the tilting direction. A certain angle makes it easier for the end of the catheter to move forward, and at the same time reduces the damage to the human body caused by the end of the catheter.

Further, the connecting piece 4 also includes a fixed section 42, the fixed end is fixed with the polished rod section 41, the connecting concave lugs 3 of the connecting ring 1 are sleeved on the polished rod section 41, and the connecting lugs 2 of the adjacent connecting ring 1 are fixed to the polished rod section 41. Segment 42 is fixed. The connecting lugs 3 of the connecting ring 1 are sleeved on the polished rod section 41, and the connecting lugs 2 of the adjacent connecting rings 1 are fixed with the fixing section 42, so that the two connecting rings 1 will not squeeze each other, and are sleeved on the polished rod. The connecting lugs 3 on the segment 41 can be tilted flexibly. Since the connecting lugs 2 of one connecting ring 1 are fixed with the fixing segment 42, and the connecting lugs 3 of the other connecting ring 1 are sleeved on the polished rod segment 41, the connecting concave lugs 3 sleeved on the polished rod segment 41 can correspond to Sliding or tilting relative to the polished rod section 41 . Therefore, the connecting concave lugs 3 sleeved on the polished rod section 41 can generate passive inclination, and the coiled tube can be passively bent to a certain extent when it is moved too much, so as to facilitate the movement of the coiled tube.

Furthermore, the end of the polished rod segment 41 away from the fixing segment 42 is fixed with a retaining edge 411 for blocking the connecting concave lug 3 . The baffles 411 can block the connecting concave lugs 3 to prevent the connecting concave lugs 3 from falling out of the polished rod section 41 . After the connecting concave lugs 3 are limited by the ribs 411, the connecting rings 1 can be connected reliably, avoiding the tripping of the adjacent connecting rings 1, and ensuring the reliable connection between the snake bones. The connecting concave lug 3 is always sleeved on the polished rod segment 41, and one side of the connecting concave lug 3 can be blocked by the retaining edge 411, and the other side of the connecting concave lug 3 can be limited by the connecting lug 2 of the other connecting ring 1 , to ensure that the connecting concave lugs 3 are always sleeved on the polished rod segment 41, and the connection is reliable under the condition that there is a flexible movement space between the connecting rings 1.

Further, the connecting piece 4 is provided with a through hole, the through hole penetrates the polished rod section 41 and the fixed section 42, and the through hole is connected with a fastener 43, the fastener 43 is a pin or a screw, and the diameter of the polished rod section 41 is larger than The diameter of the fixed segment 42 . A pin or screw is connected in the through hole of the connecting piece 4 , and the pin or screw can block one end of the fixing section 42 . The diameter of the polished rod section 41 is larger than the diameter of the fixed section 42, the polished rod section 41 can block the other section of the fixed section 42, and the connecting lugs 2 can be limited on the fixed section 42 to avoid the connecting lugs 2 to the adjacent connecting ring 1. The connecting lugs 3 on the top cause the squeeze. The pins or screws are easy to disassemble and install, so the connecting ring 1 can be connected quickly and reliably, so as to ensure the normal use of the coil pipe.

Example 3

As shown in FIGS. 1 , 4 and 5 , the coiled tube for endoscope in this embodiment includes several connecting rings 1 , one side of the connecting ring 1 is fixed with a connecting lug 2 , and the other end of the connecting ring 1 is fixed with a connecting ring 1 . Recess 3, a connecting piece 4 is provided between the connecting lug 2 of a connecting ring 1 and the connecting concave 3 of the adjacent connecting ring 1, and one end of the connecting piece 4 is connected with the connecting lug 2 of a connecting ring 1 or The concave lug 3 is fixed, the connecting piece 4 includes a polished rod segment 41, the connecting lug 2 or the connecting concave lug 3 of the adjacent connecting ring 1 is sleeved on the polished rod segment 41, and the length of the polished rod segment 41 is greater than that sleeved on the polished rod segment 41. Thickness of connecting lug 2 or connecting lug 3.

One end of the connector 4 of the present invention is fixed, and the length of the polished rod section 41 of the connector 4 is greater than the thickness of the connecting lug 2 or the connecting concave lug 3 sleeved on the polished rod section 41. Therefore, the polished rod section 41 is covered with The provided connecting ring 1 can be tilted flexibly to avoid the situation that the connecting ring 1 is stuck. The connecting ring 1 can be tilted flexibly, so that the coil tube can be more easily bent to a specific angle, ensuring that when the endoscope is used, the end of the catheter of the endoscope can be conveniently and actively bent to a specific degree. A gap is reserved on both sides of the connecting lug 2 or the connecting concave lug 3, then the connecting lug 2 or the connecting concave lug 3 can now be inclined at a certain angle to the polished rod section 41, and the coil pipe can be passively bent along the vertical direction of the tilting direction. A certain angle makes it easier for the end of the catheter to move forward, and at the same time reduces the damage to the human body caused by the end of the catheter.

Further, one end of the polished rod segment 41 is fixed on the connecting concave lug 3 of the connecting ring 1, the connecting lug 2 of the adjacent connecting ring 1 is sleeved on the polished rod segment 41, and the polished rod segment 41 is away from one end of the connecting concave lug 3 Several blocks 412 are fixed. The connecting lugs 2 of the connecting ring 1 are sleeved on the polished rod segment 41 , and one end of the polished rod segment 41 is fixed with the connecting concave lugs 3 of the other connecting ring 1 , then the connecting lugs 3 form a blocking edge on one side of the polished rod segment 41 . A plurality of blocks 412 are fixed at one end of the polished rod segment 41 away from the connecting lug 3 , and the blocks 412 form a blocking edge on the other side of the polished rod segment 41 . The length of the polished rod segment 41 is greater than the thickness of the connecting lug 2 sleeved on it, then when the connecting lug 2 is sleeved on the polished rod segment 41, the connecting lug 2 can freely rotate or slide, then the adjacent connecting ring 1 Can be flexibly tilted between. The connecting lug 2 can also be inclined to a certain extent relative to the polished rod section 41, so that the coiled tube can be passively bent to a certain extent, which is convenient for the movement of the endoscope catheter.

Furthermore, the number of the blocking blocks 412 is two, and the two blocking blocks 412 are respectively disposed on both sides of the polished rod section 41 . 7. The two blocks 412 can block the side of the polished rod segment 41 away from the connecting concave lug 3, so that the connecting lug 2 will not come out of the polished rod segment 41, so as to ensure the reliable connection between the adjacent connecting rings 1. The two blocks 412 can limit the two sides of the connecting lug 2 , so that the connecting lug 2 can be stably sleeved on the polished rod section 41 to prevent the connecting lug 2 from falling off. The stopper 412 is bent by a flanging process.

The polished rod section 41 is provided with a central hole 413, the weight of the polished rod section 41 is reduced, and the weight of the entire coiled tube is correspondingly reduced.

The present utility model is not limited to the above-mentioned optional embodiments, and anyone can draw other various forms of products under the inspiration of the present utility model. The technical solutions within the scope defined by the claims all fall within the protection scope of the present invention.

Claims (8)

1. A flexible bending coil pipe for an endoscope is characterized in that: the connecting device comprises a plurality of connecting rings (1), one side of each connecting ring (1) is fixed with a connecting lug (2), the other end of each connecting ring (1) is fixed with a connecting concave lug (3), a connecting piece (4) is arranged between the connecting lug (2) of one connecting ring (1) and the connecting concave lug (3) of the adjacent connecting ring (1), one end of each connecting piece (4) is fixed with the connecting lug (2) or the connecting concave lug (3) of one connecting ring (1), each connecting piece (4) comprises a polished rod section (41), the connecting lug (2) or the connecting concave lug (3) of the adjacent connecting ring (1) is sleeved on the polished rod section (41), and the length of each polished rod section (41) is greater than the thickness of the connecting lug (2) or the connecting concave lug (3) sleeved on the polished rod section (41).

2. A flexible bending coil for an endoscope according to claim 1, wherein: the connecting piece (4) further comprises a fixing section (42), the fixing end is fixed with the polished rod section (41), the connecting concave lug (3) of the connecting ring (1) is sleeved on the polished rod section (41), and the connecting convex lug (2) of the adjacent connecting ring (1) is fixed with the fixing section (42).

3. A flexible bending coil for an endoscope according to claim 2, wherein: one end of the polished rod section (41) far away from the fixed section (42) is fixed with a flange (411) used for blocking the connection concave lug (3).

4. A flexible bending coil for an endoscope according to claim 2, wherein: the fixing section (42) is riveted and fixed with the connecting lug (2).

5. A flexible bending coil for an endoscope according to claim 2, wherein: the connecting piece (4) is internally provided with a through hole which penetrates through the polished rod section (41) and the fixing section (42), a fastening piece (43) is connected in the through hole, the fastening piece (43) is a pin or a screw, and the diameter of the polished rod section (41) is larger than that of the fixing section (42).

6. A flexible bending coil for an endoscope according to claim 1, wherein: one end of each polished rod section (41) is fixed on the corresponding connecting concave lug (3) of the corresponding connecting ring (1), the connecting lugs (2) of the adjacent connecting rings (1) are sleeved on the polished rod sections (41), and a plurality of stop blocks (412) are fixed at one ends, far away from the corresponding connecting concave lugs (3), of the polished rod sections (41).

7. A flexible bending snake for an endoscope according to claim 6, wherein: the number of the stop blocks (412) is two, and the two stop blocks (412) are respectively arranged on two sides of the polished rod section (41).

8. A flexible bending snake for an endoscope according to claim 6, wherein: a central hole (413) is arranged in the polished rod section (41).

Images