CN220546263U - Traction wheel, endoscope handle and endoscope - Google Patents

Abstract

The application discloses traction wheel, endoscope handle and endoscope belongs to medical instrument technical field. The traction wheel comprises a wheel body, at least one axial end of the wheel body is provided with an axial protruding rotating shaft, the rotating shaft is integrally formed with the wheel body, the rotating shaft comprises a shaft body and a first reinforcing rib arranged on the side wall of the shaft body, and the proximal end of the first reinforcing rib in the length direction is connected to the wheel body. Through setting up bellied pivot at the axial of wheel body at least one end to with pivot and wheel body integrated into one piece, on the one hand in the aspect of production assembly, can get rid of the assembly process of wheel body and pivot, improve the production assembly efficiency of endoscope, on the other hand, through setting up first strengthening rib outside the axis body of pivot, can improve the bending strength of axis body, reduce the traction wheel in the use, the bending deformation's of pivot condition appears.

Description

Traction wheel, endoscope handle and endoscope

Technical Field

The application belongs to the technical field of medical equipment, and particularly relates to a traction wheel, an endoscope handle and an endoscope.

Background

The endoscope is used as a medical diagnosis instrument, the insertion tube part of the endoscope can enter the body through a natural duct or incision of a human body, medical staff rotates the traction wheel by controlling a poking piece on a handle of the endoscope, so that a traction rope connected to the traction wheel moves, and the traction rope pulls an active bending section at the distal end of the insertion tube to bend so as to achieve the purpose of adjusting the bending action of the active bending section at the distal end of the insertion tube.

In the related art, the traction wheel of the endoscope needs to rotate through the rotating shaft, and on one hand, the traction wheel is connected with the rotating shaft through assembly, so that the traction wheel and the rotating shaft can slide relatively in the use process, the traction wheel and the rotating shaft slip, and the normal use of the traction wheel is influenced; on the other hand, because the diameter of the rotating shaft is generally smaller than that of the traction wheel, the pulling force of the traction rope borne by the traction wheel can act on the rotating shaft, so that the rotating shaft is easy to bend, deform or even break, and the normal use of the traction wheel is influenced.

Disclosure of Invention

The application aims to solve the technical problem that the normal use of the traction wheel is easily influenced by the assembly connection of the traction wheel and a rotating shaft at least to a certain extent. To this end, the present application provides a traction wheel, an endoscope handle, and an endoscope.

The embodiment of the application provides a traction sheave, include: the wheel body, the axial at least one end of wheel body all is provided with the bellied pivot of axial, the pivot with wheel body integrated into one piece, the pivot include the axis body and set up in the first strengthening rib of axis body lateral wall, first strengthening rib length direction's proximal end connect in on the wheel body.

Optionally, for better implementing the present application, a plurality of the first reinforcing ribs are parallel to each other, and a plurality of the first reinforcing ribs are uniformly distributed on the side wall of the shaft body at intervals.

Alternatively, for better realizing the present application, the distal end of the first reinforcing rib is provided with a guide surface, one end of the guide surface is connected with the side surface of the first reinforcing rib, and the other end of the guide surface is connected with the side wall of the shaft body.

Optionally, for better implementing the present application, the rotating shaft further includes a plurality of second reinforcing ribs, a plurality of second reinforcing ribs are all distributed on the side wall of the shaft body with the interval, the length of the first reinforcing rib is greater than the length of the second reinforcing rib, and the height of the first reinforcing rib in the radial direction of the shaft body is less than the height of the second reinforcing rib in the radial direction of the shaft body.

Alternatively, for better implementing the present application, the first reinforcing ribs and the second reinforcing ribs are alternately arranged at intervals.

Alternatively, for better implementing the present application, the distal end faces of the second reinforcing ribs are located on the same plane, and the distal end faces of the second reinforcing ribs are perpendicular to the side wall of the shaft body.

Optionally, for better realizing the application, both sides of the wheel body are provided with the rotating shafts, and the rotating shafts on both sides of the wheel body are coaxially arranged.

Optionally, for better realization this application, the traction sheave still includes the protection casing, the protection casing is fixed in on the wheel body, the protection casing is including the connecting portion cover body that is connected, the cover body is semicircle arc or minor arc, connecting portion with the wheel body can dismantle the connection, the cover body is located the circumference of wheel body, the rope groove that holds the haulage rope has been seted up to the circumference of wheel body, the cover body with interval between the circumference wall of wheel body is less than the diameter of haulage rope.

The embodiment of the application also provides an endoscope handle, which comprises a shell and the traction wheel, wherein the rotating shaft is rotatably connected to the shell.

Embodiments of the present application also provide an endoscope comprising an insertion tube and the above-described endoscope handle, the insertion tube being connected to the endoscope handle.

Compared with the prior art, the application has the following beneficial effects:

the application provides a traction wheel is through setting up bellied pivot at least one end in the axial of wheel body to with pivot and wheel body integrated into one piece, on the one hand in the aspect of production assembly, can get rid of the assembly process of wheel body and pivot, improve the production assembly efficiency of endoscope, on the other hand, through set up first strengthening rib outside the axis body of pivot, can improve the bending strength of axis body, reduce the traction wheel in the use, the bending deformation's of pivot condition appears.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic diagram of the traction wheel;

FIG. 2 shows a partial enlarged view at A in FIG. 1;

FIG. 3 shows a schematic view of the connection structure of the wheel body and the protective cover;

FIG. 4 is a schematic view showing the wheel and the protective cover in FIG. 3 from another view;

FIG. 5 shows a schematic view of the internal structure of an endoscope handle;

fig. 6 shows a schematic structural view of an endoscope.

Reference numerals:

100-wheel body; 110-rope grooves; 120-clamping grooves; 130-positioning holes;

200-rotating shaft; 210-a shaft body; 220-a first stiffener; 221-guiding surfaces; 230-a second reinforcing rib; 231-distal end face;

300-protecting cover; 310-connecting part; 320-a cover; 330-snap; 340-positioning columns;

400-bearing; 500-a housing; 600-insertion tube.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all the directional indicators in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The present application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

as shown in fig. 1 to 5, the traction sheave structure provided in the present application includes a wheel body 100 and a rotating shaft 200. The wheel body 100 is used for connecting a traction rope, and the rotating shaft 200 is used for connecting with a shell 500 of an endoscope handle. The wheel body 100 has opposite end surfaces in the axial direction. At least one end surface of the wheel body 100 in the axial direction is provided with a rotating shaft 200 protruding in the axial direction, so that after the rotating shaft 200 is rotatably connected with the housing 500 of the endoscope handle, the wheel body 100 can rotate by taking the axial direction of the rotating shaft 200 as a rotation center, thereby driving the traction rope to move. The fixing manner between the traction rope and the wheel body 100 includes, but is not limited to, pressing and fixing the traction rope on the wheel body 100 by a pressing plate, or arranging a hole on the wheel body 100, and tying the traction rope on the wheel body 100 after passing through the hole. The rotating shaft 200 may be connected to a shift lever to realize a function of the shift lever to control the traction wheel to rotate. In this embodiment, the circumferential direction of the wheel body 100 is provided with rope grooves 110, and the rope grooves 110 can accommodate the traction rope, so that the traction rope can be drawn into the rope grooves 110 when the wheel body 100 rotates.

In this embodiment, the rotation shaft 200 is integrally formed with the wheel body 100, so that an assembling process between the rotation shaft 200 and the wheel body 100 is omitted, and the assembling efficiency of the endoscope handle is improved to a certain extent. Meanwhile, the integrally formed rotating shaft 200 and the wheel body 100 can also improve stability and consistency between the rotating shaft 200 and the wheel body 100, and can avoid the phenomenon that the rotating shaft 200 and the wheel body 100 slide relatively, so that the wheel body 100 slides on the rotating shaft 200.

Specifically, the rotating shaft 200 includes a shaft body 210 and a first reinforcing rib 220 disposed on a surface of the shaft body 210, where the shaft body 210 and the first reinforcing rib 220 are also integrally formed, a proximal end of the first reinforcing rib 220 in a length direction is connected to the wheel body 100 and integrally formed with the wheel body 100, and a distal end of the first reinforcing rib 220 extends along the length direction of the shaft body 210. The first reinforcing ribs 220 can strengthen the bending strength of the rotating shaft 200 when the rotating shaft 200 receives the tensile force in the radial direction, so that the phenomenon that the rotating shaft 200 is bent and deformed or broken due to the tensile force of the traction rope on the wheel body 100 acting on the rotating shaft 200 is avoided. It should be noted that, the "distal end" and the "proximal end" referred to in this embodiment are defined as the distal ends of the corresponding components, compared to the distal end of the wheel 100, wherein the end of the component closer to the wheel 100 is defined as the proximal end of the component, and the end of the component farther from the wheel 100 is defined as the distal end of the component.

In addition, in the related art, in order to reduce the cost, the wheel body 100 which is not easy to deform is generally made of plastic material, and the rotating shaft 200 is made of metal material, so as to improve the bending strength of the rotating shaft 200, so that the problem of bending deformation or even fracture of the rotating shaft 200 can be solved, but the production cost of the traction wheel can be increased to a certain extent, and the assembly process cannot be eliminated because the wheel body 100 and the rotating shaft 200 are made of different materials and must be completed in an assembly mode. And the traction wheel that this application provided, then can all adopt plastics material to make traction wheel and pivot 200 and first strengthening rib 220, reduce the manufacturing cost of whole traction wheel, simultaneously, also complete the assembly process of having removed pivot 200 and wheel body 100, can also avoid appearing axial slip and circumference phenomenon emergence that skids between wheel body 100 and the pivot 200.

Further, in the present embodiment, the plurality of first reinforcing ribs 220 are distributed on the side wall of the shaft body 210 at uniform intervals with the axis of the rotating shaft 200 as the center, and the plurality of first reinforcing ribs 220 are disposed parallel to each other. Because the acting force of the traction rope to the wheel body 100 always faces the far end of the endoscope, that is, the acting force of the traction rope to the wheel body 100 always faces the same direction, more uniform bending resistance can be provided for the shaft body 210 by arranging a plurality of uniformly distributed first reinforcing ribs 220, the shaft body 210 can be rotated to any angle, and the first reinforcing ribs 220 can provide enough bending strength for the shaft body 210 to prevent the shaft body 200 from bending deformation or fracture. Of course, in some alternative embodiments, the plurality of first reinforcing ribs 220 may be distributed without being uniformly distributed, so long as the plurality of first reinforcing ribs 220 are spaced apart from each other by a certain distance, so that the first reinforcing ribs 220 cover different positions of the shaft body 210.

The protrusions of the plurality of first reinforcing ribs 220 along the radial direction of the shaft body 210 have the same height, so that an end surface of the plurality of first reinforcing ribs 220 away from the shaft body 210 is a side surface of the first reinforcing ribs 220, and an area surrounded by the side surfaces of the plurality of first reinforcing ribs 220 can form a substantially circular arc shape, thereby enabling the first reinforcing ribs 220 to be used for fixing the bearing 400. For example, the inner ring of the bearing 400 is sleeved on the first reinforcing rib 220 to realize fixation, and the outer ring of the bearing 400 is used for being connected with the endoscope housing 500, so that the traction wheel rotates smoothly through the bearing 400. The manner in which the bearing 400 is secured to the first stiffener 220 includes, but is not limited to, an interference fit and a transition fit.

Further, as shown in fig. 2, the distal end of the first stiffener 220 is provided with an inclined guiding surface 221, one end of the guiding surface 221 is connected to the side surface of the first stiffener 220, and the other end of the guiding surface 221 is connected to the side wall of the shaft 210, so that the self-centering function of the bearing 400 can be achieved through the guiding surface 221, and the bearing 400 can be more conveniently mounted on the first stiffener 220. The guide surface 221 may be a flat surface or an arc surface having an arc.

Preferably, in the present embodiment, the guide surface 221 is connected with the side arc of the first reinforcing rib 220 in a transitional manner to reduce friction between the bearing 400 and the first reinforcing rib 220.

Further, the side surface of the first reinforcing rib 220 may be provided as an arc surface, which is adapted to the inner ring surface of the bearing 400.

Further, as shown in fig. 1 and 2, the rotating shaft 200 further includes a plurality of second reinforcing ribs 230, wherein the plurality of second reinforcing ribs 230 are uniformly spaced on the side wall of the shaft body 210, the proximal ends of the second reinforcing ribs 230 in the length direction are connected to the wheel body 100, and the distal ends of the second reinforcing ribs 230 in the length direction extend along the axial direction of the shaft body 210. The second reinforcing rib 230 has a length smaller than that of the first reinforcing rib 220, and since one end of the first reinforcing rib 220 and the proximal end of the second reinforcing rib 230 are connected to the wheel body 100, it is possible to arrange the first reinforcing rib 220 closer to the distal end of the shaft 210 than the shaft 210 of the second reinforcing rib 230. The height of the first reinforcing rib 220 in the radial direction of the shaft body 210 is smaller than the height of the second reinforcing rib 230 in the radial direction of the shaft body 210. By the arrangement, the bearings 400 with different diameters can be fixed by the first reinforcing ribs 220 and the second reinforcing ribs 230, so that the traction wheel can be suitable for endoscopes with different models.

Preferably, the first reinforcing ribs 220 and the second reinforcing ribs 230 are alternately arranged along the circumferential direction of the shaft body 210, so that one reinforcing rib and the second reinforcing rib 230 can be more uniformly stressed.

Further, as shown in fig. 2 and 3, the distal end faces 231 of the plurality of second reinforcing ribs 230 are located on the same plane in the present embodiment, and the distal end faces 231 of the second reinforcing ribs 230 are perpendicular to the side wall of the shaft body 210, that is, the axial direction of the planar shaft body 210 where the distal end faces of the second reinforcing ribs 230 are located. This arrangement enables the distal end face 231 of the second reinforcing bead 230 to serve as an abutment face for the bearing 400 mounted on the first reinforcing bead 220. The bearing 400 mounted on the first reinforcing rib 220 is limited such that the mounting positions of the bearing 400 can be unified.

In the traction wheel provided in the present embodiment, the two sides of the wheel body 100 are provided with the rotating shafts 200, and the two rotating shafts 200 are coaxially arranged. So that the wheel body 100 can be coupled with the housing 500 of the endoscope handle through the two shafts 200 to better support the traction wheel when the wheel body 100 is applied to the endoscope handle. Of course, in some alternative embodiments, the shaft 200 may be provided on only one side of the wheel body 100, if the service life is not considered. For example, the traction wheel applied to the disposable endoscope can be provided with the rotating shaft 200 only at one side of the wheel body 100 because it does not need to be reused, so that the cost of a part of traction wheel can be reduced.

Further, as shown in fig. 3 and 4, the traction wheel further includes a protective cover 300, the protective cover 300 is fixed on the wheel body 100, and the protective cover 300 includes a connecting portion 310 and a cover body 320 that are connected. Specifically, the cover 320 is in a semi-circular arc shape or a poor arc shape, i.e., the arc of the cover 320 is less than or equal to 180 ° to reduce interference and friction between the cover 320 and the traction rope. The connecting portion 310 is detachably connected with the wheel body 100, the cover 320 is located in the circumferential direction of the wheel body 100, and the distance between the cover 320 and the circumferential wall surface of the wheel body 100 is smaller than the diameter of the traction rope. Because the traction wheel should be completely covered by the outer shell of the endoscope handle after being arranged on the endoscope handle, whether the traction rope falls off or not can not be directly observed, and the traction rope is inconvenient to maintain after falling off, the protective cover 300 is arranged, so that the traction rope can be prevented from falling off from the rope groove 110, and a series of problems caused by falling off of the traction rope are avoided.

The fixing manner between the protection cover 300 and the wheel body 100 is detachable connection, and in this embodiment, the detachable connection structure is realized by adopting the clamping groove 120 and the clamping buckle 330 which are matched. Specifically, the wheel body 100 is provided with a clamping groove 120, the clamping groove 120 penetrates through two axial ends of the wheel body 100, and the buckle 330 penetrates through the clamping groove 120 to be clamped with the clamping groove 120.

In order to more conveniently assemble the protection cover 300 and the wheel body 100, in the embodiment, a plurality of positioning holes 130 are further provided on the wheel body 100, and a plurality of positioning posts 340 are provided on the connecting portion 310 of the protection cover 300, and each positioning post 340 corresponds to one positioning hole 130. The positioning posts 340 are inserted into the positioning holes 130 to position the wheel body 100 and the protective cover 300, so that the buckle 330 can be accurately inserted into the clamping groove 120 to be clamped and fixed.

As shown in fig. 4, the embodiment of the present application also provides an endoscope handle, which includes a housing 500 and the traction wheel described above, and the rotation shaft 200 in the traction wheel is rotatably connected with the housing 500. The endoscope handle of this embodiment is used for grasping and manipulating by medical personnel.

Based on the endoscope handle, the embodiment of the application also provides an endoscope, and the endoscope structure is as shown in fig. 5, and comprises an insertion tube 600 and an endoscope handle, wherein the distal end of the insertion tube 600 is provided with an active bending section, the insertion tube 600 is connected with the endoscope handle, and a haulage rope in the active bending section enters the endoscope handle shell 500 through the insertion tube 600 and is connected with a haulage wheel. The endoscope in the embodiment of the application may be a bronchoscope, a pyeloscope, a esophagoscope, a gastroscope, a enteroscope, an otoscope, a nasoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, and the like, and the type of the endoscope is not particularly limited in the embodiment of the application.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

Claims (10)

1. A traction sheave, comprising: wheel body (100), at least one end of wheel body (100) axial all is provided with axial bellied pivot (200), pivot (200) with wheel body (100) integrated into one piece, pivot (200) include axis body (210) and set up in first strengthening rib (220) of axis body (210) lateral wall, first strengthening rib (220) length direction's proximal end connect in on wheel body (100).

2. A traction wheel according to claim 1, wherein a plurality of said first ribs (220) are parallel to each other and wherein a plurality of said first ribs (220) are uniformly spaced on a side wall of said axle body (210).

3. A traction wheel according to claim 2, wherein the distal end of the first reinforcement rib (220) is provided with a guiding surface (221), one end of the guiding surface (221) being connected to a side surface of the first reinforcement rib (220), the other end of the guiding surface (221) being connected to a side wall of the shaft body (210).

4. The traction wheel of claim 2, wherein the rotating shaft (200) further comprises a plurality of second reinforcing ribs (230), the plurality of second reinforcing ribs (230) are all distributed on the side wall of the shaft body (210) at intervals, the length of the first reinforcing rib (220) is greater than the length of the second reinforcing rib (230), and the height of the first reinforcing rib (220) in the radial direction of the shaft body (210) is smaller than the height of the second reinforcing rib (230) in the radial direction of the shaft body (210).

5. A traction sheave according to claim 4, characterized in that the first ribs (220) and the second ribs (230) are alternately arranged at intervals.

6. A traction sheave according to claim 5, characterized in that the distal end faces (231) of the second ribs (230) lie on the same plane and the distal end faces (231) of the second ribs (230) are perpendicular to the side walls of the shaft body (210).

7. A traction wheel according to any one of claims 1-6, wherein the shafts (200) are provided on both sides of the wheel body (100), and wherein the shafts (200) on both sides of the wheel body (100) are coaxially arranged.

8. The traction wheel according to claim 1, further comprising a protective cover (300), wherein the protective cover (300) is fixed on the wheel body (100), the protective cover (300) comprises a connecting portion (310) and a cover body (320) which are connected, the cover body is in a semicircular arc shape or a minor arc shape, the connecting portion (310) is detachably connected with the wheel body (100), the cover body (320) is located in the circumferential direction of the wheel body (100), a rope groove (110) for accommodating a traction rope is formed in the circumferential direction of the wheel body (100), and a distance between the cover body (320) and a circumferential wall surface of the wheel body (100) is smaller than the diameter of the traction rope.

9. An endoscope handle comprising a housing (500) and the traction wheel of any one of claims 1-8, said shaft (200) being rotatably connected to said housing (500).

10. An endoscope comprising an insertion tube (600) and the endoscope handle of claim 9, said insertion tube (600) being connected to said endoscope handle.