CN218792195U

CN218792195U - Endoscope snake bone, endoscope insertion part and endoscope

Info

Publication number: CN218792195U
Application number: CN202223579010.4U
Authority: CN
Inventors: 周震华
Original assignee: Hunan Vathin Medical Instrument Co Ltd
Current assignee: Hunan Vathin Medical Instrument Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-07
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to an endoscope snake bone, endoscope insertion portion and endoscope, including the snake bone unit that a plurality of heads and tails connected gradually, along the axial direction of snake bone unit, the both ends of snake bone unit are provided with inner connecting portion, outer connecting portion respectively, between two adjacent snake bone units, the inner connecting portion of a snake bone unit and the outer connecting portion overlap joint of another snake bone unit are provided with the rotation hole on the outer connecting portion, rotate downthehole connecting axle that is equipped with, be equipped with the protection tube between connecting axle and the rotation downthehole wall, the tip and the inner connecting portion of connecting axle are connected. The utility model discloses utilize the connecting axle in the outside and the protection tube cooperation to realize the rotation between the snake bone unit and connect, can not cause crowded occupation of space to snake bone unit inner space, and can reduce the connecting axle and at the downthehole activity space of rotation for the connecting axle roughly is in the axis position of rotating the hole all the time, can improve the rotation connection stability between the snake bone unit, can increase again and control the precision that the snake bone takes place directional bending deformation.

Description

Endoscope snake bone, endoscope insertion part and endoscope

Technical Field

The utility model belongs to the technical field of the endoscope technique and specifically relates to an endoscope snake bone, endoscope insertion portion and endoscope are related to.

Background

Endoscopes are increasingly used in modern minimally invasive procedures, which may enter the body through a natural orifice or a minimally invasive aperture of the body. The endoscope includes handle and insertion portion, is provided with the apparatus pipe in the insertion portion and makes a video recording the module pipeline, and in actual operation, through stirring the driving lever on the handle and drive the traction wheel and rotate to carry out the gesture to the bending section of insertion portion and adjust, thereby the orientation of adjustment distal end module realizes functions such as fixed point observation. In the process of implementing the present invention, the applicant finds that in the prior art, the bent section usually includes a snake bone formed by riveting a plurality of snake bone units, however, the riveted structure can occupy the internal cavity space of the snake bone units, and the installation and use of the instrument tube or the camera module pipeline are affected.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an endoscope snake bone, an endoscope insertion portion and an endoscope, which solve the above technical problems in the prior art, and mainly include the following three aspects:

the utility model provides a first aspect provides an endoscope snake bone, including a plurality of snake bone units that connect gradually end to end, be provided with the chamber way that supplies the haulage rope to pass through on the snake bone unit, along the axial direction of snake bone unit, the left end of snake bone unit is provided with inner connecting portion, the inner wall of inner connecting portion and the inner wall of snake bone unit are located same curved surface, the right-hand member of snake bone unit is provided with outer connecting portion, between two adjacent snake bone units, the inner connecting portion of a snake bone unit and the outer connecting portion overlap joint of another snake bone unit, and inner connecting portion is located the inboard of outer connecting portion, be provided with the rotation hole on the outer connecting portion, be equipped with the connecting axle in the rotation hole, be equipped with annular gap between connecting axle and the rotation hole inner wall, be provided with the protection tube in the annular gap, the connecting axle passes through the protection tube and rotates the hole rotation to be connected, and the tip and the inner connecting portion of connecting axle are connected.

Further, the protection tube is connected to a peripheral wall of the connection shaft or an inner wall of the rotation hole.

Further, the outside of outer joint portion is provided with the locating part, the locating part is connected with connecting axle or protection tube, outer joint portion is located between locating part and the inner joint portion.

Furthermore, an avoiding cavity for accommodating the limiting part is arranged on the outer side wall of the outer connecting part.

Further, the outer diameter of the end portion of the protection tube near the inner connecting portion is gradually changed, and the outer diameter of the end portion of the protection tube is gradually reduced in a direction toward the inner connecting portion.

Further, the sum of the thicknesses of the inner connecting part and the outer connecting part is less than or equal to the thickness of the snake bone unit.

Further, the length of the overlapping part of the inner connecting part and the outer connecting part is less than that of the inner connecting part and that of the outer connecting part.

Furthermore, the connecting shaft and the inner connecting part are welded or glued.

The application provides in a second aspect an endoscope insertion portion, including haulage rope and foretell endoscope snake bone, the haulage rope is worn to locate in the chamber way.

A third aspect of the present application provides an endoscope characterized by comprising a handle and the above-mentioned endoscope insertion section, the proximal end of which is connected to the handle.

The utility model discloses for prior art has following technological effect at least:

the utility model discloses utilize the connecting axle and the protection tube cooperation in the outside to realize the rotation between in-connection portion and the outer joint portion and connect, can not cause crowded occupation of space to snake bone unit inner space, and can reduce the connecting axle and rotate downthehole activity space, make the connecting axle roughly be in the axis position who rotates the hole all the time, can improve the rotation connection stability between in-connection portion and the outer joint portion, can increase again and control the precision that the snake bone takes place directional crooked deformation, and avoid the connecting axle and rotate the mutual wearing and tearing between the downthehole wall, increase equipment life and safety in utilization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a snake bone of the endoscope of the present invention;

FIG. 2 is a schematic view of the connection structure between the snake bone units of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an exploded view of the connection mechanism between the snake bone units of the present invention;

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

FIG. 6 is a schematic structural view of the snake bone unit of the present invention;

FIG. 7 is a schematic view of the connection structure between the snake bone units (with the limiting members) according to the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at C;

in the figure, the position of the upper end of the main shaft,

10. a snake bone unit; 110. an inner connection portion; 120. an outer connecting portion; 121. rotating the hole; 130. a connecting shaft; 140. protecting the tube; 150. a limiting member; 160. a cavity channel.

Detailed Description

The following description provides many different embodiments, or examples, for implementing different features of the invention. The particular examples set forth below are intended as illustrations of a matter of simplicity of description and are not intended as limitations on the invention.

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the present disclosure, unless expressly stated or limited otherwise, a first feature may comprise a first and a second feature in direct contact, or the first and second features may be in contact by means of another feature not in direct contact but in between. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

In addition, in the utility model, the "near end" and the "far end" are far and near positions of the structure relative to the operation of the human body in the use environment, so as to conveniently describe the position relationship between the components and facilitate understanding; for the same component, "proximal" and "distal" are relative positional relationships of the component, and are not absolute; therefore, the concept of the present invention should be understood in view of the implementation of the principle, without deviating from the essence of the present invention.

Example 1:

the embodiment of the application provides an endoscope snake bone, as shown in fig. 1, including a plurality of snake bone units 10 that connect gradually end to end, be provided with the chamber 160 that supplies the haulage rope to pass through on the snake bone unit 10, along the axial direction of snake bone unit 10, the left end of snake bone unit 10 is provided with interior connecting portion 110, the inner wall of interior connecting portion 110 and the inner wall of snake bone unit 10 are located same curved surface, the right-hand member of snake bone unit 10 is provided with outer connecting portion 120, between two adjacent snake bone units 10, as shown in fig. 2-6, the interior connecting portion 110 of one snake bone unit 10 and the outer connecting portion 120 overlap joint of another snake bone unit 10, and interior connecting portion 110 is located the inboard of outer connecting portion 120, be provided with on the outer connecting portion 120 and rotate the hole 121, be equipped with connecting axle 130 in the rotation hole 121, be equipped with the annular gap between connecting axle 130 and the rotation hole 121 inner wall, the annular gap is provided with protection tube 140, connecting axle 130 rotates with rotation hole 121 through protection tube 140 and is connected, the tip of connecting axle 130 is connected with interior connecting axle 110.

In the prior art, the bending section generally includes a snake bone formed by riveting a plurality of snake bone units 10, however, the riveting structure needs to rivet in the inner side of the inner connecting part 110 and the outer side of the outer connecting part 120 simultaneously by using rivets to realize riveting, the inner rivet occupies the inner cavity space of the snake bone units 10, the installation and use of the instrument tube or the camera module pipeline are affected, and the connection stability between the snake bone units 10 is deteriorated due to only riveting in the outer side; in the present embodiment, the inner wall of the inner connecting portion 110 located at the inner side is set to be on the same curved surface as the inner wall of the snake bone unit 10, so that the inner connecting portion 110 does not occupy the inner space of the snake bone unit 10, and the passing resistance between the inner walls of the snake bone unit 10 can be reduced; the inner connecting part 110 and the outer connecting part 120 are rotatably connected by the outer connecting shaft 130, and the inner connecting part 110 is respectively arranged on two sides of the same end part of one snake bone unit 10 and is limited by the two inner connecting parts 110, so that the connecting shaft 130 is always positioned in the rotating hole 121, and the connection stability and the rotation stability of the snake bone units 10 are ensured; in addition, in order to further improve the connection stability between the snake bone units 10, the protection tube 140 is arranged in the annular gap between the connecting shaft 130 and the rotating hole 121, the moving space of the connecting shaft 130 in the rotating hole 121 is reduced by the protection tube 140, so that the connecting shaft 130 is always approximately located at the axis position of the rotating hole 121, the rotating connection stability between the inner connecting part 110 and the outer connecting part 120 can be improved, the precision of directional bending deformation of the snake bone can be increased, meanwhile, the protection tube 140 is additionally arranged, the connecting shaft 130 can be prevented from contacting with the inner wall of the rotating hole 121, the mutual abrasion between the connecting shaft 130 and the inner wall of the rotating hole 121 is avoided, the service life of the device is prolonged, and the use safety is improved.

Specifically, in order to secure the connection stability between the connection shaft 130, the protective tube 140, and the inner wall of the rotation hole 121, the protective tube 140 may be connected to the circumferential wall of the connection shaft 130 with a certain gap left between the protective tube 140 and the rotation hole 121 so that the outer connection part 120 rotates around the connection shaft; in some embodiments, it is also possible to connect the protective tube 140 to the inner wall of the rotation hole 121 with a certain gap between the protective tube 140 and the connection shaft 130 so that the outer connection part 120 rotates around the connection shaft; preferably, the protection pipe 140 may be welded to the inner wall of the rotation hole 121, or the protection pipe 140 may be welded to the circumferential wall of the connection shaft 130.

Specifically, in order to further improve the connection stability between the snake bone units 10, a limiting member 150 may be disposed outside the outer connecting portion 120, as shown in fig. 7 and 8, the limiting member 150 is connected to the protective tube 140, the outer connecting portion 120 is located between the limiting member 150 and the inner connecting portion 110, and neither the limiting member 150 nor the inner connecting portion 110 can pass through the rotation hole 121, so that the connecting shaft 130 and the protective tube 140 are always located in the rotation hole 121 under the simultaneous constraint of the limiting member 150 and the inner connecting portion 110, thereby improving the connection stability between the snake bone units 10; in addition, in the processing process, the connecting shaft 130 passes through the rotating hole 121 and then abuts against the inner connecting part 110, then the connecting shaft 130 and the inner connecting part 110 are welded by laser welding, then the connecting shaft 130 is sleeved with the protective tube 140, the protective tube 140 is pushed into the rotating hole 121, then the protective tube 140 is welded with the inner wall of the rotating hole 121, and then the limiting part 150 is welded on the protective tube 140, so that the rotating connection of the inner connecting part 110 and the outer connecting part 120 is realized; in some embodiments, a longer protection tube 140 may be adopted, after one end of the protection tube 140 sleeved on the connecting shaft 130 abuts against the inner connecting portion 110, the other end of the protection tube 140 is still outside the rotating hole 121, at this time, the tube wall at the end of the protection tube 140 may be bent, so that the tube wall of the bent protection tube 140 serves as the limiting member 150, and the limiting member 150 and the protection tube 140 are integrally disposed.

In some embodiments, the limiting member 150 may be connected to the connecting shaft 130, and at this time, the protecting tube 140 may not be connected to the connecting shaft 130 and the inner wall of the rotation hole 121, but the limiting member 150 and the inner connecting portion 110 are engaged to limit and restrict the protecting tube 140 and the connecting shaft 130 in the rotation hole 121.

Specifically, in the production and processing process of the insertion portion, the cladding body is generally arranged outside the snake bone, and in order to avoid the influence of the limiting member 150 on the installation and setting of the cladding body, an avoiding cavity for accommodating the limiting member 150 can be arranged on the outer side wall of the outer connecting portion 120, so that the flat packaging of the cladding body can be realized.

Specifically, for improving the processing convenience of the connection structure between the snake bone units 10, the outer diameter of the end of the protective tube 140 close to the inner connection part 110 can be gradually changed, and along the direction toward the inner connection part 110, the outer diameter of the end of the protective tube 140 is gradually reduced, so that the wall of the insertion end of the protective tube 140 is thinner, the insertion end can be easily inserted into the annular gap, the time for inserting the protective tube 140 is shortened, and the processing efficiency of the device is improved.

Specifically, in order to avoid the influence of the connection structure between the snake bone units 10 on the installation arrangement of the cladding body, the sum of the thicknesses of the inner connecting part 110 and the outer connecting part 120 can be smaller than or equal to the thickness of the snake bone units 10, so as to further ensure the smooth installation of the cladding body.

Specifically, for facilitating the snake bone to realize bending deformation, the length of the lap joint part of the inner connecting part 110 and the outer connecting part 120 can be smaller than the length of the inner connecting part 110 and the length of the outer connecting part 120, so between two adjacent snake bone units 10, a gap is left between the end parts of the inner connecting part 110 of the first snake bone unit 10 and the second snake bone unit 10, and similarly, a gap is also left between the end parts of the outer connecting part 120 of the first snake bone unit 10 and the second snake bone unit 10, so that the inner connecting part 110, the outer connecting part 120, the connecting shaft 130 and the protective tube 140 can be driven by a traction rope to quickly realize pivoting, and the bending control convenience and the flexibility of the snake bone are improved.

In some embodiments, when the snake bone unit 10 is made of plastic, the connecting shaft 130 can pass through the rotation hole 121 to abut against the inner connecting portion 110, and then the abutting portion is heated, so that the inner connecting portion 110 of the abutting end face is melted by heat, thereby facilitating the bonding between the connecting shaft 130 and the inner connecting portion 110.

Specifically, to facilitate the pull-cord passing through, the channel 160 may be configured as a hole or a channel; in order to facilitate the instrument tube and the camera module pipeline to pass through the snake bone, an instrument cavity for installing the instrument tube and a camera cavity for installing the camera module pipeline can be arranged on the snake bone unit 10.

Specifically, the snake bone unit 10 is provided with two inner connecting portions 110 and two outer connecting portions 120, and the inner connecting portions 110 and the outer connecting portions 120 are arranged in one-to-one correspondence.

Specifically, the inner connection portion 110 and the corresponding outer connection portion 120 are disposed in the same radial direction of the snake bone unit 10, and the inner connection portion 110 and the traction rope channel 160 are disposed in different radial directions of the snake bone unit 10.

Specifically, two traction rope channels 160 are arranged on the snake bone unit 10, and a connecting line of the two traction rope channels 160 intersects with an axis of the snake bone unit 10.

Specifically, the line connecting the two pull-cord channels 160 is perpendicular to the line connecting the two inner connectors 110.

Example 2:

the embodiment of the application provides an endoscope insertion part, which comprises a traction rope and an endoscope snake bone in the embodiment 1, wherein the traction rope is arranged in a cavity 160 in a penetrating mode. The drive haulage rope can let the snake bone of inserted part realize directional crooked, because snake bone unit 10 realizes connecting through the connecting axle 130 and the protection tube 140 in the outside, connection structure can not cause crowded occupation of inner space to the snake bone, and then effectively guarantees to make a sound the installation safety in utilization of apparatus pipe or the module pipeline of making a video recording.

Example 3:

an endoscope is provided in an embodiment of the present application, comprising a handle and the insertion portion of embodiment 2, wherein the proximal end of the insertion portion is connected to the handle.

It should be noted that the endoscope in the embodiment of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, an enteroscope, an otoscope, a rhinoscope, an odontoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, and the like, and the kind of the endoscope is not particularly limited in the embodiment of the present application.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an endoscope snake bone, a serial communication port, including a plurality of snake bone units that connect gradually end to end, be provided with the chamber way that supplies the haulage rope to pass through on the snake bone unit, along the axial direction of snake bone unit, the left end of snake bone unit is provided with inner connecting portion, the inner wall of inner connecting portion is located same curved surface with the inner wall of snake bone unit, the right-hand member of snake bone unit is provided with outer connecting portion, between two adjacent snake bone units, the inner connecting portion of a snake bone unit and the outer connecting portion overlap joint of another snake bone unit, and inner connecting portion is located the inboard of outer connecting portion, be provided with the rotation hole on the outer connecting portion, be equipped with the connecting axle in the rotation hole, be equipped with the annular gap between connecting axle and the rotation hole inner wall, be provided with the protection tube in the annular gap, the connecting axle passes through the protection tube and rotates the hole and is connected, the tip and the inner connecting portion of connecting axle are connected.

2. An endoscope snake bone according to claim 1 wherein said protective tube is connected to the peripheral wall of the connecting shaft or the inner wall of the rotation hole.

3. The endoscope snake bone according to claim 1, wherein a stopper is provided on an outer side of the outer connecting portion, the stopper being connected to the connecting shaft or the protective tube, and the outer connecting portion being located between the stopper and the inner connecting portion.

4. An endoscope snake bone according to claim 3 wherein an escape cavity is provided in the outer side wall of said external connection portion for receiving a stop member.

5. An endoscope snake bone according to any of claims 1 to 4, wherein the outer diameter of the end portion of the protection tube adjacent to the inner connecting portion is gradually reduced and the outer diameter of the end portion of the protection tube is gradually reduced in a direction toward the inner connecting portion.

6. An endoscope snake bone according to any of claims 1 to 4, wherein the sum of the thicknesses of the inner and outer connecting portions is less than or equal to the thickness of the snake bone unit.

7. An endoscope snake bone according to claim 6 wherein the length of the overlapping portions of the inner and outer connection portions is less than the length of the inner and outer connection portions.

8. An endoscope snake bone according to any of claims 1 to 4, wherein said connecting shaft is welded or glued to the inner connecting portion.

9. An endoscope insertion portion comprising a pulling cord and the snake bone of any one of claims 1 to 8, wherein the pulling cord is inserted into a lumen.

10. An endoscope, comprising a handle and the endoscope insertion portion of claim 9, the proximal end of the endoscope insertion portion being connected to the handle.