阅读说明：本技术 一种微型蛇骨组件 (Miniature snake bone subassembly ) 是由 林敏� 杨长胜 于 2019-06-28 设计创作，主要内容包括：本发明公开了一种微型蛇骨组件,属于软性管内镜配件技术领域。该微型蛇骨组件包括多个首尾相接的蛇骨节环,每一蛇骨节环的上端对称设置有至少两个向上凸起的扣位；所述蛇骨节环的下端对称设置有与扣位相匹配的扣槽；所述扣位的内壁上设置有转角定位筋,所述转角定位筋的下端两侧与蛇骨节环的上端圆滑过渡；所述扣槽的内壁上设置有用于容置转角定位筋的转角定位槽；装配时其中一个蛇骨节环的扣位卡接在下一个蛇骨节环的扣槽内,且转角定位筋卡设于转角定位槽内,使每两个相邻的蛇骨节环转动连接。本发明的微型蛇骨组件能够在较细的软性镜中实现弯曲转向功能,体积小、直径细,转角灵活,无需通过铆钉铆合连接,便于装配,且能够有效防止松脱。(The invention discloses a miniature snake bone component, and belongs to the technical field of flexible tube endoscope accessories. The miniature snake bone component comprises a plurality of snake bone joint rings which are connected end to end, and the upper end of each snake bone joint ring is symmetrically provided with at least two buckling positions which are raised upwards; the lower end of the snake bone joint ring is symmetrically provided with buckling grooves matched with the buckling positions; the inner wall of the buckling position is provided with a corner positioning rib, and two sides of the lower end of the corner positioning rib are in smooth transition with the upper end of the snake bone joint ring; the inner wall of the buckling groove is provided with a corner positioning groove for accommodating a corner positioning rib; when the snake bone joint ring is assembled, the buckling position of one snake bone joint ring is clamped in the buckling groove of the next snake bone joint ring, and the corner positioning ribs are clamped in the corner positioning grooves, so that every two adjacent snake bone joint rings are rotatably connected. The miniature snake bone component can realize the bending and steering functions in a thin flexible mirror, has small volume, thin diameter and flexible corner, does not need to be riveted and connected through rivets, is convenient to assemble, and can effectively prevent loosening.)

1. A miniature snake bone subassembly which is characterized in that: the snake bone joint hoop comprises a plurality of snake bone joint hoops which are connected end to end, wherein the upper end of each snake bone joint hoop is symmetrically provided with at least two buckling positions which are protruded upwards; the lower end of the snake bone joint ring is symmetrically provided with buckling grooves matched with the buckling positions; the inner wall of the buckling position is provided with a corner positioning rib, and two sides of the lower end of the corner positioning rib are in smooth transition with the upper end of the snake bone joint ring; the inner wall of the buckling groove is provided with a corner positioning groove for accommodating the corner positioning rib; during assembly, one of the two Snake bone joint rings is clamped in the next buckling groove of the next Snake bone joint ring, and the corner positioning ribs are clamped in the corner positioning grooves, so that every two adjacent Snake bone joint rings are rotatably connected.

2. A micro snake bone assembly according to claim 1 wherein: an anti-slip wall is formed between the corner positioning rib and the inner wall of the buckling position; an anti-skid blocking rib matched with the anti-skid wall is arranged between the corner positioning groove and the buckling groove; when every two adjacent snake bone joint rings are assembled, the antiskid blocking ribs are attached to the antiskid wall.

3. A micro snake bone component according to claim 1 or 2 wherein: and two steel wire holes for the steering steel wire to pass through are symmetrically arranged on the inner wall of the snake bone joint ring.

4. A micro snake bone assembly according to claim 3 wherein: the connecting line of the circle centers of the two steel wire holes is vertical to the connecting line of the central points of the two buckling positions.

5. A micro snake bone assembly according to claim 3 wherein: an avoidance inclined plane is arranged at the position, corresponding to the steel wire hole, of the upper end of the snake bone joint ring, and the avoidance inclined plane is in smooth transition with the upper end face of the snake bone joint ring.

6. A micro snake bone component according to claim 1 or 2 wherein: the buckling position comprises a circular handle body and a handle rod, and the circular handle body and the handle rod are integrally formed; the catching groove is a circular groove with an opening, and the minimum width of the opening of the circular groove is smaller than the minimum width of the handle rod.

7. A micro snake bone component according to claim 6 wherein: two sides of the opening are protruded downwards to form symmetrical lead-in buckles.

8. A micro snake bone component according to claim 1 or 2 wherein: the snake bone segment ring is made of plastic or metal.

9. A micro snake bone component according to claim 1 or 2 wherein: the snake bone fixing device also comprises a fixing frame arranged at the end part of the snake bone component, and one end of the fixing frame is provided with the buckling position; the fixing frame is buckled with a snake bone joint ring positioned at the tail end of the snake bone component.

10. A micro snake bone component according to claim 1 or 2 wherein: the lens holder is also included, and the end part of the lens holder is provided with the catching groove; the lens support is buckled with a snake bone joint ring positioned at the front end of the snake bone component.

Technical Field

The invention relates to the technical field of flexible tube endoscope accessories, in particular to a miniature snake bone component suitable for medical flexible tube endoscopes and industrial flexible tube endoscopes.

Background

Along with the popularization of minimally invasive surgery, various flexible mirrors with bendable heads are used in various surgeries, so that the pain of patients is well reduced. When the head of the existing soft mirror is bent and turned at a bending angle, the head is very difficult to bend, and particularly, the structure of the soft mirror with a small diameter is very limited. The existing soft endoscope is bent by a built-in snake bone through a method of pulling a steel wire rope connected with the snake bone. The snake bones in the prior art are all riveted and connected by rivets, and due to the rivet riveting connection mode, the following defects are easy to occur: firstly, the riveting position of the knuckle ring in the snake bone is deformed if the riveting tool and the axis of the rivet are not on the same axis or the riveting force is too large; secondly, in the riveting process, if the riveting pressure is too high, the surface of the workpiece is easily damaged or the rivet is deformed or the rivet head is cracked; thirdly, the riveted workpiece is easy to have the phenomenon of incomplete riveting or insufficient firmness in riveting; therefore, the riveting process of workers has high skill requirements, so that the production efficiency is low, the large-scale production is difficult, the situation that the riveting quality is not qualified is easy to occur, the phenomenon that rivets fall off sometimes occurs, the defects of final finished products are more, the rejection rate is high, and the production cost is high.

Particularly, in clinical use, thin medical soft endoscopes are needed in the fields of nasal cavities, bladders, pediatrics and the like of human bodies, and because existing snake bones are thick, thin snake bones cannot be manufactured, and thin endoscopes cannot be manufactured; the existing medical endoscope is thick, and causes great pain to patients in the using process.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the miniature snake bone component which can realize the bending and steering functions in a thin flexible mirror, has small volume, thin diameter and flexible corner, is not required to be riveted and connected through a rivet, is convenient to assemble and can effectively prevent loosening.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

a miniature snake bone component comprises a plurality of snake bone joint rings which are connected end to end, wherein the upper end of each snake bone joint ring is symmetrically provided with at least two buckling positions which are convex upwards; the lower end of the snake bone joint ring is symmetrically provided with buckling grooves matched with the buckling positions; the inner wall of the buckling position is provided with a corner positioning rib, and two sides of the lower end of the corner positioning rib are in smooth transition with the upper end of the snake bone joint ring; the inner wall of the buckling groove is provided with a corner positioning groove for accommodating the corner positioning rib; during assembly, one of the two Snake bone joint rings is clamped in the next buckling groove of the next Snake bone joint ring, and the corner positioning ribs are clamped in the corner positioning grooves, so that every two adjacent Snake bone joint rings are rotatably connected.

As a preferred embodiment of the present invention, an anti-slip wall is formed between the corner positioning rib and the inner wall of the buckling position; an anti-skid blocking rib matched with the anti-skid wall is arranged between the corner positioning groove and the buckling groove; when every two adjacent snake bone joint rings are assembled, the antiskid blocking ribs are attached to the antiskid wall.

In a preferred embodiment of the invention, two wire holes for passing through a steering wire are symmetrically arranged on the inner wall of the snake bone node ring.

Further preferably, a connecting line of circle centers of the two steel wire holes is perpendicular to a connecting line of center points of the two buckling positions.

In a preferred embodiment of the present invention, an avoidance slope is provided at a position corresponding to the wire hole at the upper end of the serpentine segment ring, and the avoidance slope is in smooth transition with the upper end surface of the serpentine segment ring.

As a preferred embodiment of the present invention, the buckling position comprises a circular handle body and a handle rod, wherein the circular handle body and the handle rod are integrally formed; the catching groove is a circular groove with an opening, and the minimum width of the opening of the circular groove is smaller than the minimum width of the handle rod.

As a preferred embodiment of the invention, two sides of the opening are protruded downwards to form symmetrical lead-in buckles.

As a preferred embodiment of the invention, the snake bone segment ring is made of plastic or metal.

As a preferred embodiment of the invention, the miniature snake bone component further comprises a fixing frame arranged at the end part of the snake bone component, and one end of the fixing frame is provided with the buckling position; the fixing frame is buckled with a snake bone joint ring positioned at the tail end of the snake bone component.

As a preferred embodiment of the present invention, the micro snake bone assembly of the present invention further comprises a lens holder, wherein the end of the lens holder is provided with the catching groove; the lens support is buckled with a snake bone joint ring positioned at the front end of the snake bone component.

Compared with the prior art, the invention has the beneficial effects that:

the miniature snake bone component enables the plurality of snake bone joint rings to be axially and rotatably connected through the matching of the buckling positions and the buckling grooves, and the connection strength of the snake bone component can be enhanced through the corner positioning ribs and the corner positioning grooves, so that the snake bone joint rings are effectively prevented from loosening; furthermore, the radial movement between two adjacent snake bone joint rings can be effectively prevented through the matching of the anti-slip wall and the anti-slip blocking ribs; according to the invention, through the micro structural design, the micro snake bone joint rings are quickly assembled together without rivet riveting connection, so that the assembly is convenient while the material cost is saved, the head of the soft lens can flexibly rotate, the production efficiency is improved, and the production and processing cost is greatly reduced.

Drawings

FIG. 1 is a schematic perspective view of a micro snake bone assembly according to the present invention;

FIG. 2 is a schematic perspective view of a snake bone segment ring according to the present invention;

FIG. 3 is a schematic view of another angle of the snake bone segment ring of the present invention;

FIG. 4 is a front view of a snake bone segment ring of the present invention;

FIG. 5 is a cross-sectional view of a serpentine segment ring of the present invention taken along the axial direction thereof;

FIG. 6 is a cross-sectional view of a serpentine segment ring of the present invention taken along a radial direction thereof;

FIG. 7 is a cross-sectional view of a micro snake bone assembly of the present invention taken along the axial direction thereof;

the reference numbers illustrate: 1. a snake bone ganglion loop; 2. buckling; 3. buckling grooves; 4. corner positioning ribs; 5. an anti-slip wall; 6. anti-skid blocking ribs; 7. a corner positioning groove; 8. a steel wire hole; 9. a lead-in buckle; 10. avoiding the inclined plane; 11. a circular shank; 12. a handle bar; 13. a pipeline channel; 14. a fixed mount; 15. a lens holder.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 7, the miniature snake bone assembly of the present invention comprises a snake bone assembly, a fixing frame 14 for connecting a soft lens main body, and a lens holder 15 as a front end of the soft lens; the holder 14 is detachably provided on the distal end of the snake bone assembly, and the lens holder 15 is detachably provided on the front end of the snake bone assembly.

Specifically, as shown in fig. 2 to 6, the snake bone component includes a plurality of snake bone joint rings 1 connected end to end, the snake bone joint rings 1 are in an annular structure, the snake bone joint rings 1 are connected end to end in pairs to form the snake bone component, a pipeline channel 13 is formed on the inner wall of the snake bone component, and the pipeline channel 13 is used for connecting pipelines such as a working channel, an electric wire or a light guide bundle in the soft lens to the lens holder 15. The upper end of each snake bone node ring 1 is symmetrically provided with at least two buckling positions 2 which are vertically and upwards protruded, and the end face of the connecting end of each buckling position 2 is an arc-shaped surface. More specifically, the button 2 is composed of a circular handle 11 and a handle 12 connected with the circular handle 11, the circular handle 11 and the handle 12 are integrally formed, and the handle 12 is smoothly transited with the circular handle 11 and the upper end face of the snake bone joint ring 1. Correspondingly, the lower end of the snake bone node ring 1 is symmetrically provided with two catching grooves 3 matched with the catching positions 2, the catching grooves 3 are positioned under the catching positions 2, and the catching grooves 3 are formed by circular grooves with openings. During assembly, the buckling position 2 of one snake bone joint ring 1 is clamped in the buckling groove 3 of the next snake bone joint ring 1, so that each two adjacent snake bone joint rings 1 are in rotating connection through the matching of the buckling position 2 and the buckling groove 3. Preferably, the minimum width of the opening of the catching groove 3 is slightly smaller than the minimum width of the handle 12, so that the catching position 2 can be clamped in the catching groove 3 through the deformation force of the snake bone joint ring 1 when every two adjacent snake bone joint rings 1 are assembled, and the handle 12 is clamped at the opening of the catching groove 3 in a natural state, thereby realizing the axial fixation of the snake bone joint rings 1 and effectively preventing the snake bone joint rings 1 from loosening. Further preferably, two sides of the opening of the catching groove 3 protrude downwards to form symmetrical guiding buckles 9, so that the snake bone joint ring 1 is easy to mount and effectively prevented from falling off, and meanwhile, due to the fact that the guiding buckles 9 protrude, a gap is formed between the assembled snake bone joint ring 1, and a rotating space is provided for bending of the snake bone assembly.

Furthermore, the inner wall of each buckling position 2 is provided with a corner positioning rib 4, the corner positioning rib 4 extends downwards along the axial direction of the snake bone joint ring 1, and two sides of the lower end of the corner positioning rib 4 are in smooth transition with the upper end face of the snake bone joint ring 1, so that a left anti-slip wall 5 and a right anti-slip wall 5 are formed between the corner positioning rib 4 and the inner walls of the circular handle body 11 and the handle rod 12. Be provided with the corner constant head tank 7 that is used for holding corner location muscle 4 on the diapire of catching groove 3, the inside profile of this corner constant head tank 7 and the outside profile phase-match of corner location muscle 4. Two anti-skid blocking ribs 6 matched with the anti-skid walls 5 are symmetrically arranged between the corner positioning grooves 7 and the circular grooves. When every two adjacent snake bone joint rings 1 are assembled, the buckling position 2 of one snake bone joint ring 1 is clamped in the buckling groove 3 of the next snake bone joint ring 1, and the corner positioning ribs 4 are clamped in the corner positioning grooves 7, so that every two adjacent snake bone joint rings 1 are rotatably connected, and the structural strength of the snake bone assembly is further enhanced; when every two adjacent snake bone festival rings 1 assemble, antiskid fender muscle 6 and antiskid wall 5 laminate mutually, can effectively prevent the radial movement between two snake bone festival rings 1 through the cooperation of antiskid fender muscle 6 and antiskid wall 5. Preferably, the width of the corner positioning groove 7 is larger than that of the corner positioning rib 4, so that the snake bone assembly can be bent and turned conveniently.

Two steel wire holes 8 for passing through a steering steel wire are symmetrically arranged on the inner wall of each snake bone joint ring 1, so that the steering of the snake bone component can be adjusted through the steering steel wire. Preferably, the connecting line of the centers of the two wire holes 8 is perpendicular to the connecting line of the centers of the two buttons 2, so that the largest corner space can be provided for bending of the snake bone component. Furthermore, an avoidance inclined plane 10 is arranged at the position, corresponding to the steel wire hole 8, of the upper end face of the snake bone joint ring 1, the avoidance inclined plane 10 is in smooth transition with the upper end face of the snake bone joint ring 1, the avoidance inclined plane 10 can avoid the lower end face of the snake bone joint ring 1 when the snake bone component is bent, and the corner angle of the snake bone component is further improved; preferably, the included angle between the avoiding inclined plane 10 and the upper end face of the snake bone joint ring 1 is 30-60 degrees.

Specifically, one end of the fixing frame 14 is provided with a buckling position 2, and when the fixing frame 14 is assembled with the snake bone component, the buckling position 2 on the fixing frame 14 is clamped on a buckling groove 3 on the snake bone joint ring 1 at the tail end of the snake bone component, so that the fixing frame and the snake bone component are connected and fixed. The fixing frame 14 is buckled with the snake bone node ring 1 at the tail end of the snake bone component through the matching of the buckling position 2 and the buckling groove 3. Similarly, the end of the lens holder 15 is provided with a fastening groove 3, and when the lens holder 15 is assembled with the snake bone component, the fastening position 2 on the snake bone joint ring 1 at the front end of the snake bone component is fastened on the fastening groove 3 of the lens holder 15, so that the connection and fixation of the two components are realized. During assembly, one end of the steering steel wire is fixed on the lens bracket 15, and the other end of the steering steel wire sequentially penetrates through the steel wire hole 8 of the snake bone component, the fixing frame 14 and the soft lens main body and then is connected with the soft lens handle; when the steering steel wire on the left is pulled in the steering process, the first snake bone joint ring 1 is firstly steered to the left and reaches a preset angle, then the second snake bone joint ring 1 is steered to the left, and each snake bone joint ring 1 is sequentially steered to the left in sequence, so that the snake bone assembly is steered to the left and reaches the preset angle. After the steering is completely turned to the left, if the steering is to be turned to the right, the steering steel wire on the left is loosened, the steering steel wire on the right is pulled, the first serpentine knuckle ring 1 is firstly turned to the right to a preset angle, then the second serpentine knuckle ring 1 is turned to the right, and each serpentine knuckle ring 1 is sequentially turned to the right in sequence according to the sequence to realize the right and the preset angle. Further preferably, the snake bone segment ring 1 is made of plastic or metal.

Above-mentioned snake bone subassembly produces the clearance easily between the adjacent snake bone nodal ring 1 when crooked, makes liquid such as body fluid get into in the snake bone subassembly and causes the corruption to parts such as working channel, in order to avoid above problem, can have the crooked hose through mode cladding such as gluing on the surface of snake bone subassembly, plays sealed and guard action to the snake bone subassembly. Preferably, the length of the bent hose is greater than that of the snake bone component, and two ends of the bent hose respectively cover the connection part of the lens holder 15 and the snake bone component and the connection part of the snake bone component and the soft lens main body, so that the connection strength of the lens holder 15 and the snake bone component and the connection strength of the snake bone component and the soft lens main body are further enhanced. Similarly, in order to enhance the connection strength between the bent hose and other components, the joint between the lens holder 15 and the bent hose and the joint between the bent hose and the soft lens body are wrapped with heat-shrinkable tubes by means of heat shrinkage; further, the outer surface of the lens holder 15 and the outer surface of the soft lens body may be respectively provided with heat-shrinkable grooves to enhance the fastening and sealing effects of the heat-shrinkable tube.

According to the scheme, the miniature snake bone component enables the plurality of snake bone joint rings 1 to be axially and rotatably connected through the matching of the buckling positions 2 and the buckling grooves 3, and the connecting strength of the snake bone component can be enhanced through the corner positioning ribs 4 and the corner positioning grooves 7, so that the snake bone joint rings 1 are effectively prevented from loosening; further, the radial movement between two adjacent snake bone joint rings 1 can be effectively prevented through the matching of the anti-skid wall 5 and the anti-skid blocking ribs 6; according to the invention, through the micro structural design, the micro snake bone joint rings 1 are quickly assembled together without rivet riveting connection, so that the material cost is saved, the assembly is convenient, the head of the soft lens can flexibly rotate, the production efficiency is improved, and the production and processing cost is greatly reduced.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.