CN219397180U

CN219397180U - Endoscope bending part

Info

Publication number: CN219397180U
Application number: CN202222822165.XU
Authority: CN
Inventors: 孔维彪; 张民言; 李承玖
Original assignee: Shanghai Eda Photoelectronic Technology Co ltd
Current assignee: Zhongke Intelligent Wuxi Technology Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-07-25
Anticipated expiration: 2032-10-25

Abstract

The utility model provides an endoscope bending part, which comprises a traction wire, end snake bones and a plurality of snake bone joints; wherein: the snake bone joints are sequentially abutted end to form a snake bone body, and two ends of the snake bone body are abutted against end snake bones; the traction wire sequentially passes through the snake bone joints to limit the snake bone joints; the snake bone joint comprises a first snake bone joint and a second snake bone joint which are abutted, and the upper end face and/or the lower end face of the first snake bone joint is a convex face; the upper and lower surfaces of the second snake bone joint are both planes. Compared with the traditional mode of arranging the convex blocks and the gaps, the utility model avoids the phenomenon of blocking when the snake bone joints are misplaced by contacting the first snake bone joints with the second snake bone joints. The utility model is composed of a plurality of snake bone joints, and compared with the integrally formed bending part, the bending performance of the utility model is greatly improved in both processing and bending.

Description

Endoscope bending part

Technical Field

The utility model relates to the field of endoscopes, in particular to an endoscope bending part.

Background

The connection mode of the bending part of the endoscope adopted by the existing bending part of the endoscope is that the snake bone joint is connected in a clamping mode through the notch and the clamping block. The snake bone joint with the structure can have the problem of blocking after joint dislocation. The snake bone joint is integrally formed, but the processing cost of the snake bone joint is high, and the bending performance is not obvious.

The utility model patent with patent document CN105911687A discloses an endoscope bending part which comprises a snake bone body; wherein the snake bone body comprises a plurality of snake bone joints which are hinged in sequence; a hinged support piece is arranged in the inner cavity of the snake bone joint; the two side ends of the hinged support piece are connected with the inner wall surface of the snake bone joint to divide the inner cavity into a first built-in space and a second built-in space; one end of the hinge support piece is provided with a first hinge piece, and the other end of the hinge support piece is provided with a second hinge piece matched with the first hinge piece; the hinge support is provided with a plurality of traction holes penetrating axially. The scheme has the defect that snake bones are dislocated and blocked.

Disclosure of Invention

In view of the drawbacks of the prior art, an object of the present utility model is to provide an endoscope bending section.

The utility model provides an endoscope bending part, which comprises a traction wire, end snake bones and a plurality of snake bone joints; wherein:

the snake bone joints are sequentially abutted end to form a snake bone body, and two ends of the snake bone body are abutted against end snake bones;

the traction wire sequentially passes through the snake bone joints to limit the snake bone joints;

the snake bone joint comprises a first snake bone joint and a second snake bone joint which are abutted, and the upper end face and/or the lower end face of the first snake bone joint is a convex face; the upper and lower surfaces of the second snake bone joint are both planes.

Preferably, the upper end surface of the first snake bone joint is a convex first convex surface; the lower end surface is a concave second convex surface; and the first bulge surface and the second bulge surface are arranged at 90 degrees in the circumferential direction of the first snake bone joint.

Preferably, an upper cutting groove and a lower cutting groove are formed in the side face of the first snake bone joint along the circumferential direction of the first snake bone joint, and a region arranged between the upper cutting groove and the lower cutting groove is recessed inwards through stamping to form a traction wire limiting groove.

Preferably, the outer surface of the traction wire limiting groove, the inner side surface of the first snake bone joint above the upper cutting groove and the inner side surface of the first snake bone joint below the lower cutting groove limit the traction wire together.

Preferably, the plurality of first snake bone joints are coaxially arranged, and the first convex surfaces or the second convex surfaces of the plurality of first snake bone joints are arranged in the same direction.

Preferably, the inner side surface of the second snake bone joint extends inwards to form an inner convex part, and a traction wire perforation is arranged on the inner convex part.

Preferably, the traction wire perforation and the traction wire limiting groove are positioned on the same straight line along the axial direction of the snake bone joint.

Preferably, the first and second snake bone joints have the same inner and outer diameters.

Preferably, the end snake bone comprises a head snake bone and a tail snake bone, and the side surface of the tail snake bone is provided with a strip-shaped hole along the circumferential direction.

Preferably, the upper end face, the lower end face, the upper cutting groove and the lower cutting groove of the first snake bone joint are formed by laser centripetal cutting.

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

1. the utility model has the advantages of ingenious structure, reasonable design and lower cost.

2. Compared with the traditional mode of arranging the convex blocks and the gaps, the utility model avoids the phenomenon of blocking when the snake bone joints are misplaced by contacting the first snake bone joints with the second snake bone joints.

3. The utility model is composed of a plurality of snake bone joints, and compared with the integrally formed bending part, the bending performance of the utility model is greatly improved in both processing and bending.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

fig. 1 is a schematic view of the structure of a bending portion of an endoscope.

Fig. 2-4 are schematic structural views of a first snake bone joint of an endoscope bend.

Fig. 5 is a schematic view of a second embodiment of a first snake bone joint of an endoscope bend.

Fig. 6 is a schematic view of a second snake bone joint of the bending section of the endoscope.

Fig. 7 is a schematic view of a third embodiment of a first snake bone joint of an endoscope bend.

The figure shows:

head snake bone 1

Communication hole 101

Tail snake bone 2

Strip-shaped hole 201

First snake bone joint 3

First raised surface 301

Second raised surface 302

Upper cutting groove 303

Lower cutting groove 304

Traction wire limit groove 305

Second snake bone joint 4

Inner convex part 401

Traction wire perforation 402

Detailed Description

The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.

As shown in fig. 1 to 7, an endoscope bending part provided according to the present utility model includes a pull wire, an end snake bone, and a plurality of snake bone joints; wherein: the snake bone joints are sequentially abutted end to form a snake bone body, and two ends of the snake bone body are abutted against end snake bones; the traction wire sequentially passes through the snake bone joints to limit the snake bone joints; the snake bone joint comprises a first snake bone joint and a second snake bone joint which are abutted, and the upper end face and/or the lower end face of the first snake bone joint is a V-shaped surface; the upper and lower surfaces of the second snake bone joint are both planes. The upper end surface of the first snake bone joint is a convex first V-shaped surface; the lower end surface is a concave second V-shaped surface; and the first V-shaped surface and the second V-shaped surface are arranged at 90 degrees in the circumferential direction of the first snake bone joint. As can be seen from fig. 2, the junction between two surfaces of the first V-shaped surface is a contact portion with the adjacent second snake bone joint, and the contact portion is preferably an arc surface, and smoothly transitions with the planes of the two sides, so as to facilitate the rotation of the snake bone joint. The two surface joints of the second V-shaped surface and the two surface joints of the first V-shaped surface are arranged in a 90-degree dislocation mode, and therefore adjustment in four directions can be achieved. The first snake bone joints are coaxially arranged, and the arrangement directions of the first V-shaped surfaces or the second V-shaped surfaces of the first snake bone joints are the same. As another embodiment, when the first snake bone joint is provided with the V-shaped surface of the upper end surface or the lower end surface only, the other surface opposite to the V-shaped surface is provided as a plane and is attached to the second snake bone joint. When the plurality of coaxial first snake bone joints are arranged in the same direction, the bending part can realize bending in two directions; when the adjacent first snake bone joints are arranged in a 90-degree dislocation mode, the bending parts can achieve bending in four directions.

In more detail, the side of the first snake bone joint is provided with an upper cutting groove and a lower cutting groove along the circumference of the first snake bone joint, and the area arranged between the upper cutting groove and the lower cutting groove is inwards sunken through stamping to form a traction wire limiting groove. The outer surface of the traction wire limiting groove, the inner side surface of the first snake bone joint above the upper cutting groove and the inner side surface of the first snake bone joint below the lower cutting groove limit the traction wire together. In this embodiment, four traction wire limit grooves are provided at equal intervals along the circumferential direction.

However, for the bending portion of the endoscope, the overall outer diameter is limited in size, so that the size of the traction wire limiting grooves on the first snake bone joint is limited, and the problem that the four traction wire limiting grooves are arranged on the same circumference and sometimes cause transitional crowding and insufficient space is solved. Therefore, in the second embodiment of the present utility model, as shown in fig. 5, adjacent traction wire limiting grooves are staggered from the axial direction in the circumferential direction of the first snake bone joint, so that the problem that the sizes of the traction wire limiting grooves are too small can be avoided.

The inner side surface of the second snake bone joint extends inwards to form an inner convex part, and a traction wire perforation is arranged on the inner convex part. Along the axial direction of the snake bone joint, the traction wire perforation and the traction wire limiting groove are positioned on the same straight line. The inner diameter and the outer diameter of the first snake bone joint and the second snake bone joint are the same. The traction wire sequentially passes through the traction wire perforation and the traction wire limiting groove which are alternately arranged and is connected with the end snake bone, so that the limiting effect can be achieved, and the corner bending effect can be realized.

The end snake bone comprises a head snake bone and a tail snake bone, and a strip-shaped hole is formed in the side face of the tail snake bone along the circumferential direction of the tail snake bone. Through the setting in bar hole, the silica gel overcoat cover is established and is fixed through the rubber band on snake bone joint, and the rubber band can block in the bar hole.

The upper end face, the lower end face, the upper cutting groove and the lower cutting groove of the first snake bone joint are formed by laser centripetal cutting, and the processing is convenient.

According to another embodiment of the present utility model, the first snake bone joint may be a plane or V-shaped surface, and may be a fixture block with hinged rotation, and the upper and lower surfaces of the second snake bone joint may be planes, and may be notches with hinged rotation. The clamping block is clamped into the notch to realize rotation.

According to another embodiment of the present utility model, as shown in fig. 7, the V-shaped surface on the first snake bone joint may be replaced by an arcuate raised surface.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.

The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular 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 affecting the spirit of the utility model. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.

Claims

1. An endoscope bending part is characterized by comprising a traction wire, end snake bones and a plurality of snake bone joints; wherein:

2. The endoscope bending portion according to claim 1, wherein when both the upper end surface and the lower end surface of the first snake bone joint are convex surfaces, the upper end surface of the first snake bone joint is a first convex surface; the lower end surface is a second convex surface; the first bulge surface and the second bulge surface are arranged at 90 degrees in the circumferential direction of the first snake bone joint.

3. The bending portion of the endoscope according to claim 2, wherein the side surface of the first snake bone joint is provided with an upper cutting groove and a lower cutting groove along the circumferential direction of the first snake bone joint, and a region provided between the upper cutting groove and the lower cutting groove is recessed inward by punching to form a pull wire limiting groove.

4. The endoscope curvature of claim 3, wherein the exterior surface of the pull wire limiting groove, the interior side of the first snake bone joint above the upper cutting groove, and the interior side of the first snake bone joint below the lower cutting groove collectively limit the pull wire.

5. The endoscope bending portion according to claim 2, wherein the plurality of first snake bone joints are coaxially arranged, and the first convex surfaces or the second convex surfaces of the plurality of first snake bone joints are arranged in the same direction.

6. An endoscope curvature according to claim 3, wherein the inner side of the second snake bone joint extends inwardly to form an inner protrusion, the inner protrusion having a pull wire aperture provided therein.

7. The endoscope curvature of claim 6, wherein the pull wire perforation and the pull wire limiting groove are in a common line along an axial direction of the snake joint.

8. The endoscope curvature of claim 1, wherein the first and second snake bone joints have the same inside and outside diameters.

9. The endoscope bending portion according to claim 1, wherein the end snake bone comprises a head snake bone and a tail snake bone which are respectively provided at both sides of the snake bone body, and the side surface of the tail snake bone is provided with a bar-shaped hole along the circumferential direction thereof.

10. The endoscope curvature of claim 3, wherein the upper end surface, the lower end surface, the upper cutting groove, and the lower cutting groove of the first snake bone joint are formed by laser centripetal cutting.