Endoscope

Abstract

The utility model provides an endoscope. The endoscope comprises a handle, a bending control adjusting component, an insertion tube and a tip, the bending control adjusting part comprises a rotating shaft, a deflector rod, a control wheel and a pull wire; the pull wires are made of high polymer materials and comprise the first pull wire and the second pull wire, and the near end of the first pull wire and the near end of the second pull wire are connected with the two winding parts correspondingly. The far end of the first pull wire and the far end of the second pull wire are connected with the pipe walls, close to the two sides of the end face of one side of the tip end, of the bending structure correspondingly, and when the shifting rod shifts, the control wheel is driven to pull the first pull wire or the second pull wire so as to control the bending direction of the bending structure. According to the technical scheme, the technical problem that in the prior art, the production cost of the pull wire of the endoscope is high is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to an endoscope. Background Art

[0002] An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision mechanics, modern electronics, mathematics, and software. It has an image sensor, light source, mechanical device, etc. It can enter the stomach through the mouth or enter the body through other natural orifices.

[0003] The bending structure of the endoscope is connected to the control wheel through a traction line, so that the traction lines in different directions are pulled by the rotation of the control wheel to achieve bending of the bending structure in the corresponding direction. In the prior art, the traction lines are mostly made of steel wire ropes, which have high production costs. Utility Model Content

[0004] The utility model aims to provide an endoscope to solve the technical problem of high production cost of the traction wire of the endoscope in the prior art.

[0005] The utility model provides an endoscope, which comprises:

[0006] Handle, bend control adjustment component, insertion tube and tip;

[0007] The two ends of the insertion tube are respectively connected to the handle and the tip, and a curved structure is provided on one side of the insertion tube close to the tip;

[0008] The bending control adjustment component includes a rotating shaft, a lever, a control wheel and a traction line;

[0009] The rotating shaft is rotatably arranged in the housing of the handle, and the rotating shaft is connected to the control wheel; the control wheel is formed with at least two winding parts, and the two winding parts are located on both sides of the rotating shaft; one end of the shifting rod is connected to the control wheel, and the other end of the shifting rod extends from the opening of the handle;

[0010] The traction wire is made of polymer material, and includes a first traction wire and a second traction wire. The proximal end of the first traction wire and the proximal end of the second traction wire are respectively connected to the two winding parts, and the distal end of the first traction wire and the distal end of the second traction wire are respectively connected to the tube walls on both sides of the end face of the bending structure close to the tip end. When the lever is turned, it drives the control wheel to pull the first traction wire or the second traction wire to control the bending direction of the bending structure.

[0011] As an embodiment of the utility model, both side walls of the control wheel centered on the rotating shaft form limit line grooves, and the first traction line and the second traction line arranged on the side walls of the control wheel are respectively located in the corresponding limit line grooves.

[0012] As an embodiment of the present invention, the peripheral wall of the control wheel protrudes to form a convex eaves structure, and the convex eaves structure is located on one side or both sides of the first traction line and the second traction line.

[0013] As an embodiment of the utility model, the end surface of the control wheel is recessed to form at least two winding grooves, and the two winding grooves are respectively arranged around the two winding parts, and the first traction line and the second traction line are respectively connected to the two winding parts and are located in the corresponding winding grooves.

[0014] As an embodiment of the utility model, the endoscope further comprises a cover shell, and the cover shell covers the winding groove.

[0015] As an embodiment of the utility model, the control wheel is formed with a mounting groove, the winding groove passes through the bottom of the mounting groove, and the cover shell is clamped in the mounting groove.

[0016] And / or, the cover shell is formed with a first connecting hole;

[0017] The control wheel is also formed with a first connecting column, and the first connecting column is inserted into the first connecting hole.

[0018] As an embodiment of the present utility model, the rotating shaft is integrally formed with the end surface of the control wheel, the shifting rod is integrally formed with the end surface of the control wheel, and the shifting rod is extended to be integrally formed with the rotating shaft.

[0019] As an embodiment of the present invention, the wheel surface of the control wheel is formed with a slot extending from the edge of the wheel surface to the center of the rotating shaft, and a mating portion mating with the slot is provided on the side of the lever contacting the wheel surface of the control wheel.

[0020] As an embodiment of the present utility model, the housing is further formed with at least two guide posts, and the two guide posts are located between the control wheel and the curved structure;

[0021] Wherein, the proximal end of the first pulling line and the proximal end of the second pulling line are respectively wound around the two guide posts and then respectively connected to the two winding parts.

[0022] As an embodiment of the utility model, the endoscope further includes a first clamping tube and a second clamping tube;

[0023] The main body of the first traction line and the proximal end of the first traction line after winding around the winding portion both pass through the first clamp, and the first clamp clamps the main body of the first traction line and the proximal end of the first traction line;

[0024] The main body of the second traction wire and the proximal end of the second traction wire after winding around the winding portion both pass through the second clamp, and the second clamp clamps the main body of the second traction wire and the proximal end of the second traction wire.

[0025] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0026] In the utility model, the proximal end of the first traction wire and the proximal end of the second traction wire are respectively connected to the two winding parts, and the distal end of the first traction wire and the distal end of the second traction wire are respectively connected to the tube walls on both sides of the end face of the bending structure close to the tip end, so that the first traction wire and the second traction wire are connected between the control wheel and the bending structure to realize the bending control of the bending structure by the first traction wire and the second traction wire; the first traction wire and the second traction wire are made of polymer material, which reduces the production cost of the traction wire and solves the technical problem of high production cost of the traction wire of the endoscope in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of the exploded structure of an endoscope in one embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the structure of a control wheel in an embodiment of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the cover shell in one embodiment of the utility model;

[0031] Figure 4 It is a cross-sectional view of an endoscope in one embodiment of the utility model.

[0032] Among them: 100, endoscope; 10, handle; 101, opening; 102, guide column; 1021, second connecting hole; 11, first shell; 12, second shell; 20, insertion tube; 30, bending control adjustment component; 31, rotating shaft; 32, lever; 33, control wheel; 331, winding part; 332, convex eaves structure; 333, winding groove; 334, installation groove; 335, first connecting column; 34, traction line; 341, first traction line; 342, second traction line; 35, first clamp; 36, second clamp; 37, cover shell; 371, first connecting hole; 40, tip. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] See also Figure 1-Figure 4 The utility model provides an endoscope 100 , which includes a handle 10 , a bending control adjustment component 30 , an insertion tube 20 and a tip 40 .

[0039] Both ends of the insertion tube 20 are connected to the handle 10 and the tip 40 respectively, and a bending structure is provided on one side of the insertion tube 20 close to the tip 40. The bending structure is a controllable bending structure, such as a snake-bone structure.

[0040] The tip head 40 may be provided with a camera structure (not shown in the figure) and a light source structure (not shown in the figure) so that the tip head 40 can illuminate and take pictures inside the human body to obtain sample pictures about the human health condition.

[0041] The bending control adjustment component 30 includes a rotating shaft 31, a lever 32, a control wheel 33 and a traction line 34; the handle 10 has a housing structure that is convenient for gripping, and the housing structure has a cavity, and the rotating shaft 31 is rotatably arranged in the cavity of the housing of the handle 10. The rotating shaft 31 is connected to the control wheel 33, and the control wheel 33 is formed with at least two winding parts 331, and the two winding parts 331 are located on both sides of the rotating shaft 31. One end of the lever 32 is connected to the control wheel 33, and the other end of the lever 32 extends from the opening of the handle 10.

[0042] Among them, the traction line material of the endoscope 100 is currently mostly made of steel wire rope material, which has a high production cost and a relatively complicated fixing method. The traction line 34 in this embodiment is made of polymer material, and the traction line 34 includes a first traction line 341 and a second traction line 342. The proximal end of the first traction line 341 and the proximal end of the second traction line 342 are respectively connected to the winding parts 331 on the control wheel 33 located on both sides of the rotating shaft 31. At this time, the first traction line 341 and the second traction line 342 are also respectively located on both sides of the rotating shaft 31.

[0043] The distal ends of the first traction line 341 and the second traction line 342 are respectively connected to the tube walls on both sides of the end surface of the bending structure close to the tip head 40. When the lever 32 is turned, it drives the control wheel 33 to pull the first traction line 341 or the second traction line 342 to control the bending direction of the bending structure, thereby further driving the direction adjustment of the tip head 40, which is more conducive to surgical observation.

[0044] It should be noted that, since the first traction line 341 and the second traction line 342 are located on both sides of the rotating shaft 31, and the distal ends of the first traction line 341 and the second traction line 342 are respectively connected to the tube walls on both sides of the end surface of the bending structure close to the tip 40, when the lever 32 is moved in different directions, the pulling effects on the first traction line 341 and the second traction line 342 are different, and the bending structure is also driven to bend in different directions. Figure 4 In the structural design, when the lever 32 is moved clockwise, the lever 32 drives the control wheel 33 to pull the first traction line 341, but does not pull the second traction line 342. At this time, the first traction line 341 can drive the bending structure to bend toward the side close to the first traction line 341. When the lever 32 is moved counterclockwise, the situation is opposite to the above situation, which will not be described here.

[0045] It should be noted that, for the convenience of description, in the embodiment of the present utility model, the "proximal end" is defined as the end close to the handle 10, and the "distal end" is defined as the end close to the tip 40, which will not be repeated later.

[0046] In the utility model, the proximal end of the first traction line 341 and the proximal end of the second traction line 342 are respectively connected to the two winding parts 331, and the distal end of the first traction line 341 and the distal end of the second traction line 342 are respectively connected to the tube walls on both sides of the end face of the bending structure close to the tip head 40, so that the first traction line 341 and the second traction line 342 are connected between the control wheel 33 and the bending structure, and the first traction line 341 and the second traction line 342 control the bending structure; the first traction line 341 and the second traction line 342 are made of polymer material, which reduces the production cost of the traction line 34 and solves the technical problem of high production cost of the traction line of the endoscope in the prior art.

[0047] It should be noted that, in some specific embodiments, the proximal end of the first pulling line 341 and the proximal end of the second pulling line 342 can be connected to the winding portion 331 by bonding, sleeve connection or other connection methods.

[0048] In some specific embodiments, see Figure 4The proximal end of the first traction line 341 is arranged on the side circumferential wall of the control wheel 33 centered on the rotating shaft 31 until it is connected to the first winding portion 331 therein; the proximal end of the second traction line 342 is arranged on the other side circumferential wall of the control wheel 33 centered on the rotating shaft 31 until it is connected to the second winding portion 331 therein.

[0049] Therefore, no matter the control wheel 33 pulls the first traction line 341 or the control wheel 33 pulls the second traction line 342, the first traction line 341 and the second traction line 342 move along the peripheral wall of the control wheel 33, that is, the movement path of the first traction line 341 and the second traction line 342 is arc-shaped, thereby increasing the traction stroke of the first traction line 341 and the second traction line 342.

[0050] In some specific embodiments, both sides of the control wheel 33 are formed with limit line grooves (not shown in the figure) on the peripheral walls centered on the rotating shaft 31, and the first traction line 341 and the second traction line 342 arranged on the peripheral walls on both sides of the control wheel 33 are respectively located in the corresponding limit line grooves. The first traction line 341 and the second traction line 342 arranged on the peripheral walls on both sides of the control wheel 33 are arranged in the corresponding limit line grooves, and the limit line grooves are used to limit the first traction line 341 and the second traction line 342, so as to prevent the first traction line 341 and the second traction line 342 from loosening when pulling.

[0051] In some specific embodiments, see Figure 2 The peripheral wall of the control wheel 33 is raised to form a convex eave structure 332, and the convex eave structure 332 is located on one side or both sides of the first traction line 341 and the second traction line 342. When the first traction line 341 and the second traction line 342 arranged on the peripheral walls on both sides of the control wheel 33 swing, the convex eave structure 332 limits the swing range of this section of the line, so that it can only swing on the peripheral wall of the control wheel 33 and cannot be detached from the peripheral wall of the control wheel 33, thereby achieving stable routing of the first traction line 341 and the second traction line 342 relative to the peripheral wall of the control wheel 33.

[0052] In some specific embodiments, the eaves structure 332 can be continuous or composed of multiple sections. It can be set on both sides of the first traction line 341 and the second traction line 342, or on the side where the first traction line 341 and the second traction line 342 are easily loosened from the peripheral wall of the control wheel 33. The embodiments of the utility model do not impose specific restrictions.

[0053] See also Figure 2 and Figure 4The end surface of the control wheel 33 is recessed to form at least two winding grooves 333, and the two winding grooves 333 are respectively arranged around the two winding parts 331. The first traction line 341 and the second traction line 342 are respectively connected to the wiring on the two winding parts 331 and are located in the corresponding winding grooves 333.

[0054] In this embodiment, two winding grooves 333 are respectively arranged around the two winding parts 331, so that when the proximal end of the first traction line 341 and the proximal end of the second traction line 342 are respectively connected to the two winding parts 331, the winding grooves 333 can store and restrict the routing connected to the winding parts 331.

[0055] In some specific embodiments, the limiting wire grooves formed by the two side walls of the control wheel 33 are respectively connected to the two winding grooves 333, so that the proximal ends of the first traction wire 341 and the proximal ends of the second traction wire 342 extend into the winding grooves 333 after passing through the corresponding limiting wire grooves.

[0056] In one embodiment, see Figure 1 , Figure 3 as well as Figure 4 The endoscope 100 also includes a cover shell 37, which covers the winding groove 333. The cover shell 37 restricts the routing of the first traction line 341 and the second traction line 342 connected to the winding portion 331 in the winding groove 333, thereby preventing them from escaping from the winding groove 333, further improving the connection stability of the first traction line 341 and the second traction line 342 relative to the winding portion 331.

[0057] In some specific embodiments, see Figure 2 and Figure 4 The control wheel 33 is also formed with a mounting groove 334 , and the winding groove 333 passes through the bottom of the mounting groove 334 ; wherein the cover shell 37 is clamped in the mounting groove 334 .

[0058] The winding groove 333 passes through the bottom of the mounting groove 334 . Therefore, when the cover shell 37 is clamped in the mounting groove 334 , the cover shell 37 can restrict the routing of the wires in the winding groove 333 . The mounting groove 334 can be used to fix the cover shell 37 relative to the control wheel 33 .

[0059] In some specific embodiments, see Figure 2 , Figure 3 as well as Figure 4 The cover shell 37 is formed with a first connecting hole 371; the control wheel 33 is also formed with a first connecting column 335, and the first connecting column 335 is inserted into the first connecting hole 371, thereby further realizing the positioning, installation and stability of the cover shell 37 relative to the control wheel 33.

[0060] In some specific embodiments, see Figure 1 The handle 10 includes a first shell 11 and a second shell 12 covering the first shell 11; thereby facilitating the assembly of the rotating shaft 31, the control wheel 33, the first traction line 341, the second traction line 342, etc. into the handle 10.

[0061] In one embodiment, see Figure 4 The handle 10 is also formed with at least two guide posts 102, and the two guide posts 102 are located between the control wheel 33 and the bending structure; wherein the proximal end of the first traction line 341 and the proximal end of the second traction line 342 are respectively wound around the two guide posts 102 and then respectively connected to the two winding portions 331.

[0062] The two guide posts 102 are used to guide the proximal ends of the first traction line 341 and the proximal ends of the second traction line 342 relative to the connection of the two winding parts 331, while increasing the tension of the first traction line 341 and the second traction line 342, thereby increasing the bending accuracy of the bending structure controlled by the control wheel 33.

[0063] In some specific embodiments, see Figure 4 The guide column 102 is formed by the first shell 11, and the end surface of the guide column 102 is recessed to form a second connecting hole 1021; the second shell 12 is protruding to form a second connecting column (not shown in the figure), and the second connecting column is clamped into the second connecting hole 1021, so as to achieve a tighter covering connection between the second shell 12 and the first shell 11.

[0064] It should be noted that the connection between the proximal end of the first traction line 341 , the proximal end of the second traction line 342 and the two winding portions 331 may be achieved by bonding, sleeve connection or other connection methods.

[0065] In one embodiment, see Figure 1 and Figure 4 The endoscope 100 also includes a first clamp 35 and a second clamp 36; the main body of the first traction line 341 and the proximal end of the first traction line 341 after bypassing the winding portion 331 both pass through the first clamp 35, and the first clamp 35 clamps the main body of the first traction line 341 and the proximal end of the first traction line 341; the main body of the second traction line 342 and the proximal end of the second traction line 342 after bypassing the winding portion 331 both pass through the second clamp 36, and the second clamp 36 clamps the main body of the second traction line 342 and the proximal end of the second traction line 342.

[0066] In this embodiment, the proximal end of the first traction line 341, the proximal end of the second traction line 342 and the two winding parts 331 are connected by a sleeve connection. Specifically, the main body of the first traction line 341 is inserted into the first clamp 35, the proximal end of the first traction line 341 is firstly wound around one of the winding parts 331, and then the proximal end of the first traction line passes through the first clamp 35, and then the first clamp 35 is flattened, so that the main body of the first traction line 341 and the proximal end of the first traction line 341 are clamped by the first clamp 35. The first traction line 341 is sleeved on one of the winding parts 331; the main body of the second traction line 342 is passed through the second clamp 36, the proximal end of the second traction line 342 is firstly wound around another of the winding parts 331, and then the proximal end of the second traction line 342 is passed through the second clamp 36, and then the second clamp 36 is flattened, so that the main body of the second traction line 342 and the proximal end of the second traction line 342 are clamped by the second clamp 36, so that the second traction line 342 is sleeved on the other of the winding parts 331.

[0067] It should be noted that the control wheel 33 and the rotating shaft 31 can be split or integrated; the lever 32 can be connected to the control wheel 33, or to the rotating shaft 31, or to the control wheel 33 and the rotating shaft 31, and the connection between the lever 32 and the control wheel 33 can be a fixed connection or a detachable connection, and the connection between the lever 32 and the rotating shaft 31 can be a fixed connection or a detachable connection.

[0068] In some specific embodiments, see Figure 2 The rotating shaft 31 is integrally formed with the end surface of the control wheel 33, the shifting rod 32 is integrally formed with the end surface of the control wheel 33, and the shifting rod 32 extends to be integrally formed with the rotating shaft 31, thereby ensuring the connection stability of the rotating shaft 31, the control wheel 33 and the shifting rod 32.

[0069] In some specific embodiments, the wheel surface of the control wheel 33 is formed with a slot (not shown in the figure) extending from the edge of the wheel surface to the center of the rotating shaft 31, or a hole (not shown in the figure) is provided on the wheel surface, and the side of the lever 32 in contact with the wheel surface may be provided with a mating portion (not shown in the figure) that cooperates with the slot or the hole, such as a protruding ridge with a cross-section consistent with the slot or a mounting column with a cross-section consistent with the hole (not shown in the figure), thereby realizing a detachable connection between the lever 32 and the control wheel 33.

[0070] In some specific embodiments, a mounting hole (not shown in the figure) may be formed in the center of the control wheel 33, and the rotating shaft 31 may be pinned to the mounting hole, or a transition fit or interference fit may be used to achieve a detachable connection between the rotating shaft 31 and the control wheel 33.

[0071] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. An endoscope, characterized in that: include: Handle, bend control adjustment component, insertion tube and tip; The two ends of the insertion tube are respectively connected to the handle and the tip, and a curved structure is provided on one side of the insertion tube close to the tip; The bending control adjustment component includes a rotating shaft, a lever, a control wheel and a traction line; The rotating shaft is rotatably arranged in the housing of the handle, and the rotating shaft is connected to the control wheel; the control wheel is formed with at least two winding parts, and the two winding parts are located on both sides of the rotating shaft; one end of the shifting rod is connected to the control wheel, and the other end of the shifting rod extends from the opening of the handle; The traction wire is made of polymer material, and includes a first traction wire and a second traction wire. The proximal end of the first traction wire and the proximal end of the second traction wire are respectively connected to the two winding parts, and the distal end of the first traction wire and the distal end of the second traction wire are respectively connected to the tube walls on both sides of the end face of the bending structure close to the tip end. When the lever is turned, it drives the control wheel to pull the first traction wire or the second traction wire to control the bending direction of the bending structure.

2. The endoscope according to claim 1, characterized in that The control wheel has two side walls centered on the rotating shaft to form limit line grooves, and the first traction line and the second traction line arranged on the two side walls of the control wheel are respectively located in the corresponding limit line grooves.

3. The endoscope according to claim 1, characterized in that The peripheral wall of the control wheel protrudes to form a convex eave structure, and the convex eave structure is located on one side or both sides of the first traction line and the second traction line.

4. The endoscope according to claim 1, characterized in that The end surface of the control wheel is recessed to form at least two winding grooves, and the two winding grooves are respectively arranged around the two winding parts. The first traction line and the second traction line are respectively connected to the two winding parts and are located in the corresponding winding grooves.

5. The endoscope according to claim 4, characterized in that The endoscope further comprises a cover shell, wherein the cover shell covers the winding groove.

6. The endoscope according to claim 5, characterized in that The control wheel is also formed with a mounting groove, the winding groove passes through the groove bottom of the mounting groove, and the cover shell is clamped in the mounting groove; And / or, the cover shell is formed with a first connecting hole; The control wheel is also formed with a first connecting column, and the first connecting column is inserted into the first connecting hole.

7. The endoscope according to any one of claims 1 to 6, characterized in that: The rotating shaft is integrally formed with an end surface of the control wheel, the shifting rod is integrally formed with the end surface of the control wheel, and the shifting rod is extended to be integrally formed with the rotating shaft.

8. The endoscope according to any one of claims 1 to 6, characterized in that: The wheel surface of the control wheel is formed with a slot extending from the edge of the wheel surface to the center of the rotating shaft, and the side of the lever contacting the wheel surface of the control wheel is provided with a matching portion matching with the slot.

9. The endoscope according to any one of claims 1 to 6, characterized in that: The housing is further formed with at least two guide posts, and the two guide posts are located between the control wheel and the curved structure; Wherein, the proximal end of the first pulling line and the proximal end of the second pulling line are respectively wound around the two guide posts and then respectively connected to the two winding parts.

10. The endoscope according to any one of claims 1 to 6, characterized in that: The endoscope further comprises a first cartridge and a second cartridge; The main body of the first traction line and the proximal end of the first traction line after winding around the winding portion both pass through the first clamp, and the first clamp clamps the main body of the first traction line and the proximal end of the first traction line; The main body of the second traction wire and the proximal end of the second traction wire after winding around the winding portion both pass through the second clamp, and the second clamp clamps the main body of the second traction wire and the proximal end of the second traction wire.

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