CN210727704U

CN210727704U - Endoscope with a detachable handle

Info

Publication number: CN210727704U
Application number: CN201920867830.2U
Authority: CN
Inventors: 李奕; 刘红宇; 孙平
Original assignee: Daichuan Medical Shenzhen Co ltd; Shenzhen Xianzan Technology Co ltd
Current assignee: Daichuan Medical Shenzhen Co ltd; Shenzhen Xianzan Technology Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-06-12
Anticipated expiration: 2029-06-06

Abstract

The utility model provides an endoscope. The endoscope comprises an insertion part, a traction wire, a spring tube and a handle. The insertion portion includes an insertion tube and a bent portion. The bending portion is provided at the distal end of the insertion tube. The insertion tube is located at the end of the bend. One end of the traction wire is inserted from the end of the insertion tube and connected to the front end of the bending part. The spring tube is accommodated in the insertion tube and sleeved on the traction line, and one end of the spring tube is connected with the tail end of the bending part. The handle is provided with a driving structure, a bracket and a connecting pipe. The bracket is provided with a threaded hole. The connecting pipe is provided with external threads. One end of the connecting pipe is in threaded connection with the bracket through the threaded hole, the other end of the traction wire penetrates through the connecting pipe and the threaded hole to be connected with the driving structure on the handle, and the other end of the spring pipe is abutted to one end, close to the insertion part, of the connecting pipe. The endoscope is simple in structure and convenient for accurate installation of the spring tube.

Description

Endoscope with a detachable handle

Technical Field

The utility model relates to an endoscope part, in particular to an endoscope.

Background

The endoscope includes a handle and a bending portion. The handle is provided with a driving structure. One end of the traction steel wire is connected with the driving structure, and the other end of the traction steel wire penetrates into the bending part. The driving structure drives the bending part to turn through the traction steel wire. In order to facilitate the force conduction of the traction steel wire, the traction effect of the traction steel wire on the bending part is ensured, the traction steel wire in the bending part is generally sleeved with a spring tube, and the two ends of the spring tube need to be abutted and fixed to play a role in traction of the traction steel wire.

Usually, one end of the spring tube needs to abut against the handle and the other end abuts against the bending part. However, errors may exist in the manufacturing process and the assembling process of the handle, the bending part and the spring tube, so that the two ends of the spring tube cannot be completely and accurately abutted and fixed, the use of the spring tube is limited, and the use effect of the whole endoscope is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an endoscope of simple structure, be convenient for realize the accurate installation of spring pipe.

An endoscope, comprising:

an insertion part including an insertion tube and a bent part, the bent part being provided at a front end of the insertion tube, the insertion tube being located at a distal end of the bent part;

a traction wire, one end of which penetrates from the tail end of the insertion tube and is connected with the front end of the bending part;

the spring tube is accommodated in the insertion tube and sleeved on the traction line, and one end of the spring tube is connected with the tail end of the bending part; and

the handle is equipped with drive structure, support and connecting pipe, the support is seted up threaded hole, the connecting pipe is equipped with the external screw thread, the one end of connecting pipe with the support passes through screw hole threaded connection, the other end of pull wire passes the connecting pipe the screw hole with drive structure on the handle is connected, the spring tube other end supports to hold and locates the connecting pipe and be close to one of flexion is served.

In one embodiment, one end of the connecting pipe is screwed in the threaded hole.

In one embodiment, an end surface of the connecting pipe located outside the threaded hole is further provided with a receiving groove, so that an end portion of the spring pipe is received in the receiving groove.

In one embodiment, the end surface of the connecting pipe outside the threaded hole is arranged on a step part, and the end part of the spring pipe abuts against the step part.

In one embodiment, a slit is formed at an end of the connecting tube near one end of the bracket, and the slit extends along an axial direction of the connecting tube.

In one embodiment, the number of the slits is two, and the slits are located in the same radial direction of the connecting pipe.

In one embodiment, the plurality of pulling wires are provided, the plurality of spring tubes are also provided, the bracket comprises a plurality of threaded holes, and each pulling wire corresponds to one threaded hole.

In one embodiment, the plurality of threaded holes are distributed in a central symmetry manner.

In one embodiment, the connecting tube is provided with an external thread at one end close to the bracket.

In one embodiment, the driving structure comprises a plurality of sets of gears and racks, and the gears rotate to drive the traction wire to stretch.

In the above-described endoscope structure, the connection pipe may be screwed in and out with respect to the screw hole of the holder, thereby adjusting a distance between the connection pipe and the spring tube. When there is the error in the length of spring pipe, the spring pipe is close to the one end of handle can not be accurate, spacing in the tip of handle steadily, be located the outside length of screwed pipe through adjusting the connecting pipe, can be in order to guarantee the length of connecting pipe can just in time with the length looks adaptation of spring pipe, the one end that makes the spring pipe be close to the handle can just in time support and hold on the tip of handle, thereby can make the traction force of pull wire can conduct smoothly, guarantee the traction effect to the flexion of pull wire, guarantee the installation quality of endoscope product.

And the connecting pipe is in threaded connection with the threaded pipe of the bracket, so that the structure is simple and the installation is convenient. Moreover, the connecting position of the connecting pipe and the bracket can be adjusted by rotating the connecting pipe, and the adjusting operation is convenient and simple.

Drawings

Fig. 1 is a perspective view of an endoscope of the present embodiment;

FIG. 2 is a schematic view of another angle configuration of the endoscope shown in FIG. 1;

fig. 3 is a partially enlarged view of a portion a of the endoscope shown in fig. 1.

The reference numerals are explained below: 1. an endoscope; 10. an insertion portion; 11. a bending section; 111. a front end; 112. a terminal end; 113. a bending block; 12. a pull wire; 13. a spring tube; 14. a handle; 141. a support; 142. a connecting pipe; 1421. cutting a seam; 143. a drive structure; 15. a hose; 16. a head end.

Detailed Description

While the present invention may be susceptible to embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present description is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to that as illustrated herein.

Thus, a feature indicated in this specification will serve to explain one of the features of an embodiment of the invention, and not to imply that every embodiment of the invention must have the described feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, directional references (such as upper, lower, left, right, front and rear) are used to explain the structure and movement of the various elements of the invention not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

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

The utility model provides an endoscope. An endoscope includes a bending portion and a pull wire provided in the bending portion. The traction wire pulls the bending part to bend the bending part, so that the purpose of pulling the bending part to bend is achieved.

Referring to fig. 1, an endoscope 1 of the present embodiment includes an insertion portion 10, a pull wire 12, a spring tube 13, and a handle 14. The insertion part 10 is used to enter the cavity of the human body, and the insertion part 10 may gradually enter the affected part as the body of the human body is bent. The insertion section 10 is connected to a handle 10 of the endoscope. The insertion portion 10 includes an insertion tube 15, a bent portion 11, and a tip 16.

For convenience of explanation, the end of the endoscope 1 entering the human body is the front end of the endoscope 1, and the end of the endoscope 1 located outside the human body is the rear end of the endoscope 1. The bending portion 11 is located at the distal end of the endoscope 1 and enters the human body. The handle 14 is located outside the body for manipulation and is located at the rear end of the endoscope 1.

The bending portion 11 includes a front end 111 and a tip end 112. The tip end 16 is located at the front end 111 of the bending portion 11, which is the foremost end of the endoscope 1, and the tip end 113 enters the human body first. The front end 111 of the bending part 11 enters the human body first. The distal end 112 of the bending portion 11 is connected to the insertion tube 15. The distal end of the insertion tube 15 is connected to the handle 14. The insertion tube 15 covers the outer sides of the pull wire 12 and the spring tube 13, and the insertion tube 15 can ensure that the part of the endoscope 1 entering the human body can be in a completely closed state, and ensure that the surface of the part of the endoscope 1 entering the human body is smooth, so that the endoscope 1 can smoothly enter the human body.

The bending portion 11 includes a plurality of annular bending pieces 113 connected in series. The adjacent two bending blocks 113 are rotatably connected. The bending portion 11 is tubular and forms an inner cavity. The side of each bending piece 113 facing the interior is provided with a guide for threading the traction wire 12.

The pulling wire 12 is connected to the insertion portion 10 and the handle 14, and the bending portion 11 can be controlled by the pulling wire 12. One end of the traction wire 12 is inserted from the end of the insertion tube 15, enters the lumen of the bending portion 11, is sequentially inserted into the guide portion of each bending piece 113, and is connected to the front end 111 of the bending portion 11. The traction wire 12 is connected with each bending block 113 of the bending part 11, and each bending block 113 can accurately follow the traction movement of the traction wire 12.

The traction wire 12 is in a plurality. The plurality of traction wires 12 perform traction control on the bending portion 11 in a plurality of directions of the bending portion 11, respectively. Specifically, in the present embodiment, the number of the traction wires 12 is four. On the cross section of the bending part 11, four traction wires 12 are respectively positioned at the upper, lower, left and right of the inner cavity of the bending part 11.

It is understood that in other embodiments, the number of the pulling wires 12 may be 6, 8, or the like, in order to improve the accuracy of the motion trajectory of the bending portion 11.

The spring tube 13 is accommodated in the insertion tube 15 and is fitted over the traction wire 12. The spring tube 13 is used to conduct traction. Since the traction wire 12 pulls the plurality of bending blocks 113, the spring tube 13 can transmit the force on the traction wire 12 to each bending block 113. One end of the spring tube 13 is connected with the end 112 of the bending part 11, and the other end of the spring tube 13 is abutted with the front end of the handle 14 for limiting.

Referring to fig. 2, the handle 14 is provided with a bracket 141, a connecting tube 142 and a driving structure 143.

The driving structure 143 is adapted to be drivingly connected to the traction wire 12, thereby moving the bending portion 11 via the traction wire 12. The driving structure 143 includes a plurality of sets of gears and racks. One end of the traction wire 12 far away from the bending part 11 is in driving connection with the gear and the rack. The gear rotates to drive the rack to move, and the traction wire 12 stretches. It is understood that the driving structure 143 can also be driven in other manners, and is not limited to the driving connection manner of the gear and the rack.

The bracket 141 is provided with an end portion of the handle 14 near the front, and the bracket 141 is used to pass through the plurality of traction wires 12, respectively.

Referring to fig. 2, the bracket 141 is provided with a plurality of threaded holes 1411. The plurality of threaded holes 1411 are arranged in a centrosymmetric manner. Each threaded hole 1411 corresponds to a traction wire 12. The accurate control direction of the traction wire 12 is ensured, and the threaded holes 1411 on the bracket 141 are distributed in central symmetry to completely correspond to the traction direction of the traction wire 12.

Specifically, the bracket 141 is provided with four threaded holes 1411. Each threaded hole 1411 is correspondingly provided with one traction wire 12, so that mutual interference among the traction wires 12 is avoided. The four threaded holes 1411 are distributed in a rectangular shape, and correspond to the distribution directions of the four traction wires 12.

The connection pipe 142 is provided with one end of the bracket 141 near the bending part 11. The traction wire 12 is inserted into the screw hole 1411 of the bracket 141 through the connection tube 142. One end of the spring tube 13 abuts against and is limited on the end surface of the connecting tube 142 close to the bending part 11.

The connection pipe 142 is provided with external threads. One end of the connection pipe 142 is screw-coupled to the bracket 141 through the screw hole 1411. By adjusting the length of the connection pipe 142 screwed into and out of the screw hole 1411, the length of the connection pipe 142 outside the bracket 141 can be adjusted. When the end of the spring tube 13 close to the handle 14 cannot abut against the end of the connecting tube 142, the length of the connecting tube 142 outside the bracket 141 can be adjusted by adjusting the length of the connecting tube 142 screwed into the threaded hole 1411 until the ends of the spring tube 13 can be held in abutment against each other at the end of the connecting tube 142. Therefore, the two ends of the spring tube 13 can be relatively limited, and the spring tube 13 can smoothly pull each bending block.

Specifically, in the present embodiment, one end of the connection pipe 142 is screwed into the screw hole 1411. The end of the connection pipe 142 adjacent to the bracket 141 is provided with external threads. The external thread extends to an end surface of the connection pipe 142 near the bracket 141. One end of the connection pipe 142 enters from the screw hole 1411 of the bracket 141, and the length of the connection pipe 142 inside the bracket 141 is adjusted by rotating the connection pipe 142.

Referring to fig. 2 and 3, a slit 1421 is formed at an end of the connecting tube 142 near the bracket 141. The slit 1421 extends in the axial direction of the coupling pipe 142. The diameter of the connecting tube 142 is adapted to the diameter of the screw thread. When the connecting pipe 142 is rotated to enter the connecting pipe 142, the end of the connecting pipe 142 is slightly deformed, the slit 1421 can disperse the deformation stress of the connecting pipe 142, so as to ensure that the connecting pipe 142 can smoothly enter the threaded hole 1411, and ensure that the connecting pipe 142 can be stably and threadedly connected to the bracket 141.

The slits 1421 are two and are located in the same radial direction of the connecting pipe 142. The slit 1421 may be provided in plural as long as the strength of the connection pipe 142 is not affected.

In other embodiments, the end surface of the connecting tube 142 outside the threaded hole 1411 is further opened with a receiving groove, so that the end of the spring tube 13 is received in the receiving groove (not shown). The receiving groove is annular and is adapted to the cross-sectional shape of the spring tube 13. The accommodating groove can prevent the abutting end faces of the spring tube 13 and the connecting tube 142 from shifting in the process of the turning motion of the pull wire 12, and the limiting state of the spring tube 13 is influenced.

In another embodiment, a step portion is provided on an end surface of the connection pipe 142 outside the threaded hole 1411, and an end portion of the spring pipe 13 abuts against the step portion. The stepped part can keep the end surface of the spring tube 13 to be relatively stably limited and abutted.

The spring tube 13 is also provided with a plurality of spring tubes, the bracket 141 comprises a plurality of threaded holes 1411, and each pull wire 12 corresponds to one threaded hole 1411.

In the above-described structure of the endoscope 1, the connection pipe 142 can be screwed in and out with respect to the screw hole 1411 of the bracket 141, thereby adjusting the distance between the connection pipe 142 and the spring tube 13. When there is an error in the length of the spring tube 13, the end of the spring tube 13 close to the handle 14 cannot be accurately and stably limited at the end of the handle 14, and the length of the connecting tube 142 outside the threaded tube is adjusted, so that the length of the connecting tube 142 can be just matched with the length of the spring tube 13, and the end of the spring tube 13 close to the handle 14 can just abut against the end of the handle 14, so that the traction force of the traction wire 12 can be smoothly conducted, the traction effect of the traction wire 12 on the bending portion 11 is ensured, and the installation quality of the endoscope 1 product is ensured.

In addition, the connecting pipe 142 is connected with the threaded pipe of the bracket 141 by a thread, so that the structure is simple and the installation is convenient. In addition, the connection position between the connection pipe 142 and the bracket 141 can be adjusted by rotating the connection pipe 142, and the adjustment operation is convenient and simple.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. An endoscope, comprising:

the handle is provided with a driving structure, a support and a connecting pipe, the support is provided with a threaded hole, the connecting pipe is provided with external threads, one end of the connecting pipe is connected with the support through the threaded hole in a threaded manner, the other end of the traction wire penetrates through the connecting pipe, the threaded hole is connected with the driving structure on the handle, and the other end of the spring pipe is abutted to and arranged at one end, close to the insertion part, of the connecting pipe.

2. The endoscope of claim 1, wherein one end of the connecting tube is threaded into the threaded bore.

3. The endoscope of claim 1, wherein an end surface of the connection tube located outside the threaded hole is further provided with a receiving groove, so that an end portion of the spring tube is received in the receiving groove.

4. The endoscope of claim 1, wherein the end surface of the connecting tube outside the threaded hole is provided at a step portion, and the end portion of the spring tube abuts against the step portion.

5. The endoscope of claim 1, wherein the connecting tube has a slit formed at an end thereof adjacent to the end of the stent, the slit extending in an axial direction of the connecting tube.

6. The endoscope of claim 5, wherein the slit is two and is located in the same radial direction of the connecting tube.

7. The endoscope of claim 1, wherein said pull wire is a plurality of wires and said spring tube is a plurality of wires, and said frame includes a plurality of threaded holes, one for each of said pull wires.

8. The endoscope of claim 1, wherein the plurality of threaded holes are arranged in a central symmetry.

9. The endoscope of claim 1, wherein an end of the connecting tube adjacent to the stent is externally threaded.

10. The endoscope of claim 1, wherein the driving structure comprises a plurality of sets of gears and racks, and the gears rotate to drive the traction wire to extend and retract.