CN211408972U

CN211408972U - Endoscope bending part

Info

Publication number: CN211408972U
Application number: CN201922067673.XU
Authority: CN
Inventors: 孔维彪; 李承玖; 张民言; 陆文浩
Original assignee: Shanghai Edascope Photoelectronic Technology Co ltd
Current assignee: Zhongke Optoelectronics Beijing Intelligent Technology Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-09-04
Anticipated expiration: 2029-11-26

Abstract

The utility model provides an endoscope flexion, including spiral piece, operation line and locating part, wherein: the limiting piece is arranged on the periphery of the spiral piece; the operating wire extends into the spiral piece, and one end of the operating wire is fixed at the end part of the spiral piece; pulling the other end of the operating wire, the spiral piece can be bent along a set direction; the utility model has reasonable structure, ingenious design and convenient operation; the utility model creatively adopts the spring as the bending part, and compared with the existing endoscope bending part, the cost is greatly reduced while the bending function is satisfied; the utility model limits the direction of the spring through the limiting part, ensures that the spring is bent along the stretching direction of the operating wire when the operating wire pulls the spring, and prevents the bending deviation of the spring; the utility model discloses a design the interval of spring for the part of the different intervals of spring, crooked radian, the order is also different.

Description

Endoscope bending part

Technical Field

The utility model relates to an endoscope field specifically, relates to an endoscope flexion.

Background

Endoscopes are a common medical device. Comprises a bendable part, a light source and a group of lenses. Enter the human body through natural orifices of the human body or small incisions made by operation. When in use, the endoscope is introduced into the pre-examined organ, and the change of the relevant part can be directly observed.

All known endoscope bends at present consist of a plurality of snake bone segments connected to each other or of bending blocks, the connection means of which allow them to pivot with respect to each other. For example, patent application No. 201811592756.4 discloses a bending section of an endoscope and an endoscope. A bending section of an endoscope includes a plurality of bending blocks connected end to end. Two adjacent crooked pieces pass through connecting portion rotatable coupling between, and connecting portion include recess and arch. The bulges can be rotatably accommodated in the grooves, the end surfaces of the bending blocks are respectively provided with abutting surfaces on two sides of the connecting part, the bulges relatively rotate to the maximum angle in the grooves, the abutting surfaces of two adjacent bending blocks are abutted, so that the two bending blocks are at the maximum bending angle, the heights of the bending blocks are the same, the bending blocks are divided into a plurality of groups of bending block groups along the extension direction of the bending part, and the maximum bending angle of the bending block group close to the front end of the bending part is the maximum. The bending part of the endoscope and the front end of the endoscope have larger bending angles and can conveniently stretch into the endoscope. For another example, patent application No. 200880017615.8 discloses an endoscope bending portion. The endoscope bending section is provided at an insertion section of an endoscope, can perform a bending operation, can perform a smooth bending operation, and can be easily manufactured. The endoscope bending portion includes a plurality of joint rings (26a, 26b) having a cylindrical portion (28) and coaxially arranged in parallel with each other, one joint ring (26a) of two adjacent joint rings (26a, 26b) has a protruding portion (32) integrally provided with the cylindrical portion (28) and extending in a radial direction of the cylindrical portion (28), the other joint ring (26b) of two adjacent joint rings (26a, 26b) has a receiving portion (42) integrally provided with the cylindrical portion (28) and into which the protruding portion (32) is rotatably inserted about a longitudinal axis of the protruding portion (32), and each joint ring (26a, 26b) has a non-joined or joined discontinuous portion (34) extending in the cylindrical portion (28) so as to intersect with a circumferential direction of the cylindrical portion (28). The above patents all use the splicing of snake bone segments or curved segments, which are extremely complex in terms of the manufacture of the snake bone segments; it is also particularly complicated in terms of the joint assembly of the snake condyles. Therefore, not only are few manufacturers capable of producing endoscope bending parts at home and abroad, but also the large-scale production difficulty is high and the cost is high.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims at providing an endoscope bending part.

According to the utility model provides a pair of endoscope flexion, including spiral piece, operation line and locating part, wherein:

the limiting piece is arranged on the periphery of the spiral piece;

the operating wire extends into the spiral piece, and one end of the operating wire is fixed at the end part of the spiral piece; pulling the other end of the operating wire, the spiral piece being capable of bending in the direction in which the operating wire is arranged on the spiral piece;

the limiting piece is fixed on the side face of the spiral piece.

Preferably, the screw comprises a spring.

Preferably, the limiting member is disposed on an inner side surface or an outer side surface of the screw member, and a length direction of the limiting member is the same as a length direction of the screw member.

Preferably, the length of the operating wire is greater than the length of the helix.

Preferably, the spring has the same or different ring spacing.

Preferably, the device further comprises an operating wire protecting sleeve, and the operating wire protecting sleeve is sleeved on the operating wire.

Preferably, the set direction comprises a set radial direction of the screw element, the set radial direction comprising a radial direction in which the position of the operating wire fixed on the screw element is located.

Preferably, the operating line and the limiting member comprise a steel wire rope.

Preferably, the limiting member and the operating wire are respectively disposed on the upper and lower sides and the left and right sides of the screw in the circumferential direction.

Preferably, both ends of the spiral part are provided with fixed connecting pieces, and the fixed connecting pieces are fixedly connected with external equipment.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model has reasonable structure, ingenious design and convenient operation;

2. the utility model creatively adopts the spring as the bending part, and compared with the existing endoscope bending part, the cost is greatly reduced while the bending function is satisfied;

3. the utility model limits the direction of the spring through the limiting part, ensures that the spring is bent along the stretching direction of the operating wire when the operating wire pulls the spring, and prevents the bending deviation of the spring;

4. the utility model designs the space between the springs, so that the radian of the bending is different and the sequence of the bending is different for the parts with different spaces between the springs;

5. the traditional endoscope bending part adopts snake bone bending, and the bending mode cannot achieve the effect of complete bending. The technical scheme innovatively adopts the spring as the bending part, can completely replace the function of bending the snake bone, and greatly reduces the cost; the limiting parts are further arranged on the springs, and meanwhile, the springs are designed according to different intervals, so that deviation is avoided when the springs are bent, and the self-defined radian and the self-defined sequence of the springs can be bent.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 and 2 are schematic structural views of a bending portion of an endoscope.

The figures show that:

spring 1

Operating line 2

Limiting part 3

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

As shown in fig. 1 and 2, the present invention provides an endoscope bending portion, which includes a spring 1, an operation wire 2, and a limiting member 3, wherein: the limiting member 3 and the operating wire 2 may be steel wire ropes. The limiting member 3 and the operating wire 2 are respectively disposed in the circumferential direction of the spring 1, and specifically, the limiting member 3 and the operating wire 2 of the present embodiment are respectively disposed at the upper side, the lower side, and the left side and the right side of the circumferential direction of the spring 1. The operating wires 2 arranged on the left side and the right side extend into the spring 1, and one end of each operating wire 2 is fixed at the left end part of the spring 1; pulling the other end of the operating wire 2, the spring 1 can be bent along the direction of the operating wire 2 arranged on the spring 1; the limiting piece 3 is fixed on the side surface of the spring 1. Specifically, the limiting member 3 may be disposed on an inner side surface or an outer side surface of the spring 1, and a length direction of the limiting member 3 is the same as a length direction of the spring 1.

The length of the operating wire 2 is greater than the length of the spring 1, and the excess portion is used to manipulate the bending of the spring 1.

The endoscope bending part also comprises an operating wire protecting sleeve, not shown in the figure, which is sleeved on the operating wire 2. The protective sleeve is used for protecting the operating wire and can be sleeved on the excess part of the operating wire 2.

More specifically, the two ends of the spring 1 are provided with fixed connecting pieces, and the fixed connecting pieces are fixedly connected with external equipment.

Fig. 2 shows a variation, in which the ring pitch of the spring 1 of fig. 2 differs from that of the spring 1 of fig. 1, and the ring pitch increases from left to right as viewed in the drawing. By setting different ring spacings, the curvature of the spring 1 can be adjusted. Specifically, when the wire 2 is stretched, the portion having the larger ring pitch is bent to a smaller extent.

According to the technical scheme of the invention, one endoscope bending part can realize bending in two directions, and two endoscope bending parts can be selected to be matched in an angle of 90 degrees according to actual requirements, so that connection in 4 directions can be realized.

The utility model has reasonable structure, ingenious design and convenient operation; compared with the existing endoscope bending part, the flexible endoscope bending part has the advantages that the flexible endoscope bending part adopts the spring 1 as the bending part creatively, meets the bending function and greatly reduces the cost.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. An endoscope bending section, comprising a screw, an operation wire and a stopper, wherein:

the limiting piece is arranged on the periphery of the spiral piece;

the operating wire extends into the spiral piece, and one end of the operating wire is fixed at the end part of the spiral piece; pulling the other end of the operating wire, the spiral piece can be bent along the set direction; the limiting piece is fixed on the side face of the spiral piece.

2. The endoscope bending section of claim 1, wherein the coil comprises a spring.

3. The bending portion according to claim 1, wherein the stopper is provided on an inner side surface or an outer side surface of the screw, and a longitudinal direction of the stopper is the same as a longitudinal direction of the screw.

4. The endoscope bending section of claim 1, wherein the length of the steering wire is greater than the length of the helix.

5. The endoscopic flexure of claim 2, wherein the spring has the same or different inter-annular spacing.

6. The bending portion of an endoscope according to claim 1, further comprising an operation wire sheath tube which is fitted over the operation wire.

7. The endoscope bending section of claim 1, wherein the set direction comprises a radial direction set by the screw, the set radial direction comprising a radial direction in which a position on the screw where the operation wire is fixed is located.

8. The endoscopic flexure of claim 1, wherein the manipulation wire and stop comprise a wire cable.

9. The bending portion of an endoscope according to claim 1, wherein the stopper and the operation wire are provided on upper and lower sides and left and right sides of the screw in a circumferential direction, respectively.

10. The bending section according to claim 1, wherein the helical member is provided at both ends thereof with fixed connectors fixedly connected to an external device.