Drive structure for pull wire, operation handle, and endoscope

Abstract

Disclosed in the present invention are a drive structure for a pull wire, an operation handle, and an endoscope, which relate to the technical field of medical instruments. The drive structure comprises a fixing portion and a traction wheel, and the pull wire is wound around a guide portion. The guide portion can rotate at the same angle along with the traction wheel, the pull wire located on both sides of the guide portion is tightened or loosened, and the overall tightening or loosening distance of the pull wire increases. When an insertion portion of the endoscope rotates to the same position, compared with the prior art, this configuration can reduce the amplitude required for the medical staff to actuate a regulation member. A small actuation amplitude is more suitable for long-term operation of the medical staff, thereby reducing the discomfort experienced by the medical staff when operating the operation handle, and improving the use effect and application prospects of the endoscope.

Description

A traction rope drive structure, an operating handle, and an endoscope Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a traction rope drive structure, an operating handle, and an endoscope. Background Technology

[0002] Endoscopes are typically used to diagnose and treat lesions inside a patient's body. An endoscope consists of a handle and an insertion section. During operation, by controlling the handle, the insertion section at its tip can be pulled via a traction cable to achieve a bending motion, thereby changing the orientation of the insertion section.

[0003] In related technologies, the operating handle contains a traction wheel. Medical staff use the adjustment control on the operating handle to drive the traction wheel, which in turn drives the insertion part through a traction rope to achieve bending motion. When diagnosing and treating lesions inside a patient's body, medical staff need to significantly manipulate the adjustment control to rotate the insertion part to the desired position. Repeated and continuous manipulation can lead to finger fatigue for medical staff, which is not conducive to prolonged and continuous medical treatment, affecting the effectiveness and application prospects of the endoscope. Summary of the Invention

[0004] In view of the shortcomings of the above-mentioned related technologies, this application provides a drive structure for a traction rope, an operating handle, and an endoscope to solve the above-mentioned technical problems.

[0005] This application provides a drive structure for a traction rope, including a fixed part and a traction wheel. The fixed part is used to connect to the proximal end of the traction rope. The traction wheel is rotatably disposed relative to the fixed part. The traction wheel has a guide part for winding the traction rope and making the winding direction of the traction rope in the traction wheel opposite to the winding direction. When the traction wheel rotates, the guide part and the fixed part move away from or closer to each other.

[0006] To achieve the above and other related objectives, this application provides an operating handle, including the aforementioned drive structure and adjustment control, the adjustment control being connected to the traction wheel.

[0007] To achieve the above and other related objectives, this application provides an endoscope including the operating handle as described above.

[0008] The technical solution adopted in this invention achieves the following beneficial effects: the fixed part connects to the proximal end of the traction rope, and the guide part wraps around the traction rope. The guide part can rotate with the traction wheel at the same angle, and the traction ropes on both sides of the guide part will be tightened or loosened simultaneously. At the same rotation angle, the overall tightening or loosening distance of the traction rope is increased. The insertion part of the endoscope rotates to the same position. Compared with the prior art, this setting can reduce the amplitude of the adjustment control for medical staff. The smaller amplitude of adjustment is more suitable for medical staff to operate for a long time, reducing the discomfort caused by medical staff operating the operating handle, and improving the use effect and application prospects of the endoscope. Furthermore, the fixed end connected to the traction rope is stable and does not rotate relative to the outer shell of the operating handle, allowing the traction rope to rotate more stably and not easily shake due to changes in external force or load. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 is a schematic diagram of the driving structure shown in an exemplary embodiment of this application;

[0011] Figure 2 is a schematic diagram of another driving structure shown in an exemplary embodiment of this application;

[0012] Figure 3 is a schematic diagram of the driving structure from another perspective, illustrating an exemplary embodiment of this application;

[0013] Figure 4 is a cross-sectional view along line AA in Figure 3;

[0014] Figure 5 is a schematic diagram of another driving structure shown in an exemplary embodiment of this application;

[0015] Figure 6 is a schematic diagram of yet another driving structure shown in an exemplary embodiment of this application;

[0016] Figure 7 is a schematic diagram of the structure of an endoscope shown in an exemplary embodiment of this application.

[0017] In the diagram: 1. Endoscope; 100. Drive structure; 110. Fixing part; 120. Traction wheel; 121. Guide part; 122. Reversing part; 123. Rotary groove; 124. Through hole; 125. Guide groove; 126. Receiving groove; 127. Limiting part; 131. First sub-guide part; 132. Second sub-guide part; 133. First sub-reversing part; 134. Second sub-reversing part; 140. Traction rope; 200. Operating handle; 300. Adjustment control. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. The words "and / or" in the specification and claims indicate at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] In the various embodiments of this application, "near end" and "far end" refer to the distance of each component from the user in the usage environment. The end closer to the user is designated as the "near end", and the end farther from the user is designated as the "far end".

[0021] In related technologies, the operating handle contains a traction wheel. Medical staff use the adjustment control on the operating handle to drive the traction wheel, which in turn drives the insertion section via a traction rope to achieve bending motion. When medical staff hold the endoscope, it is difficult to make large-scale adjustments to the adjustment control, which greatly limits the already limited bending range of the insertion section, thus affecting the endoscope's effectiveness and application prospects.

[0022] This embodiment provides a drive structure 100 for a traction rope. Please refer to Figure 1. The drive structure 100 may include a fixing part 110 and a traction wheel 120. The traction wheel 120 is rotatably disposed relative to the fixing part 110.

[0023] Referring to Figure 1, the fixing part 110 may be formed in the housing of the operating handle or other structures. The fixing part 110 may be a columnar structure or a plate-like structure, etc. This embodiment does not limit the specific position and shape of the fixing part 110. The fixing part 110 is used to connect to the proximal end of the traction rope 140. The fixing part 110 has a connection hole (not shown in the figure). The shape and size of the connection hole are generally determined according to the diameter and shape of the proximal end of the traction rope 140. The traction rope 140 can pass through and connect to the connection hole. The traction rope 140 can be interference-fitted with the connection hole to ensure a stable connection between the two.

[0024] In the embodiments of this application, the connecting hole may or may not pass through the fixing part 110, and no specific limitation is made here.

[0025] In other cases, the hole wall forming the connection hole and the traction rope 140 can be glued, fastened, or connected, but this embodiment is not limited to these methods.

[0026] Please refer to Figure 1. The traction wheel 120 can be generally a wheel-shaped structure, etc., and this embodiment is not limited to this. The traction wheel 120 has a rotating shaft, which can be mounted on the housing of the operating handle, and the rotating shaft can be rotatably configured relative to the housing to realize that the traction wheel 120 is rotatably configured relative to the fixed part 110. The traction wheel 120 has a guide part 121, which can be a guide hole, a guide post, or other structures, and the guide part 121 can rotate together with the traction wheel 120.

[0027] As one of the supporting bases for the traction rope 140, the traction wheel 120 is circumferentially sleeved on the traction wheel 120 when the traction rope 140 and the guide part 121 are assembled. That is, part of the traction rope 140 is wound around the traction wheel 120. Thus, when the traction wheel 120 is rotated, the insertion part of the endoscope can be pulled by the winding of the traction rope 140 to achieve a bending action, thereby changing the orientation of the front end of the insertion part of the endoscope to adjust the shooting direction of the endoscope camera or the working area of ​​the medical device.

[0028] Referring to Figure 1, the guide section 121 is used to wind the traction rope 140, ensuring that the winding direction and exit direction of the traction rope 140 within the traction wheel 120 are opposite. The traction rope 140 can rotate around at least a portion of the guide section 121, meaning it can rotate around the guide section 121 at a certain angle. The winding direction can be the direction in which the traction rope 140 extends when it enters the guide section 121, and the exit direction can be the direction in which it extends when it exits the guide section 121. It is understood that the winding direction and the exit direction are not necessarily opposite or parallel; they can have a certain angle between them. This arrangement allows the guide section 121 to change the extension direction of the traction rope 140, and the winding direction and exit direction can be adjusted according to actual needs to adapt to different usage requirements and operating environments.

[0029] When the traction wheel 120 rotates, the guide portion 121 and the fixing portion 110 move away from or closer to each other. For example, the guide portion 121 can be located on the outer periphery of the traction wheel 120, and the fixing portion 110 is located on one side of the traction wheel 120. During the rotation of the traction wheel 120, the guide portion 121 and the fixing portion 110 move away from or closer to each other. During this period, the traction wheel 120 drives the guide portion 121 to rotate together, thereby pulling the traction rope 140. The guide portion 121 can rotate at the same angle as the traction wheel 120, and the traction ropes 140 located on both sides of the guide portion 121 are tightened or loosened, increasing the overall tightening or loosening distance of the traction ropes 140. The insertion part of the endoscope rotates to the same position. Compared with the prior art, this arrangement can reduce the amplitude of the adjustment control operated by medical staff. The smaller amplitude of the adjustment is more suitable for medical staff to operate for a long time, reducing the discomfort caused by the operation handle, and improving the effectiveness and application prospects of the endoscope.

[0030] Furthermore, the fixing part 110 of the traction rope 140 is stable and does not rotate relative to the housing of the operating handle, so the traction rope 140 can rotate more stably and is not easily shaken by changes in external force or load.

[0031] In one embodiment, referring to FIG1, the distal and proximal ends of the traction rope 140 are located on the same side of the guide portion 121. During the rotation of the traction wheel 120, the distal end of the traction rope 140 extends in the outward direction, and the proximal end extends in the inward direction. The guide portion 121 increases the extension and retraction stroke of the traction rope 140 while reducing the number of other components, thus lowering the maintenance cost of the drive structure 100.

[0032] In another embodiment, referring to Figures 2 and 3, the traction wheel 120 may further include a reversing section 122. A guide section 121 is connected to the reversing section 122. The reversing section 122 is used to wind the traction rope 140 wound from the guide section 121, with the proximal and distal ends of the traction rope 140 positioned on opposite sides of the traction wheel 120. The guide section 121 guides the traction rope 140 along a predetermined path, ensuring its stable operation within the system. The reversing section 122, closely connected to the guide section 121, ensures that the winding direction and the winding direction of the traction rope 140 are opposite. The reversing section 122 not only smoothly receives the traction rope 140 wound from the guide section 121, achieving a uniform force distribution on both sides of the traction wheel 120 between the proximal and distal ends of the traction rope 140, but also allows the distal end of the traction rope 140 to extend over a wider range, thereby improving the implementation effect of the drive structure 100 and facilitating cable routing by the operating handle 200. This setup not only ensures the continuity and stability of the traction rope 140 during the winding process, but also effectively avoids tension imbalance caused by uneven distribution of the traction rope 140.

[0033] Specifically, as shown in Figure 2, the traction wheel 120 has a swivel groove 123 extending around the rotation axis of the traction wheel 120. A guide portion 121 is connected to the groove wall forming the swivel groove 123, and a fixing portion 110 is slidably fitted within the swivel groove 123. The shape and size of the fixing portion 110 correspond to the swivel groove 123. For example, the guide portion 121 can be connected to the groove wall, allowing the fixing portion 110 and the guide portion 121 to move closer or further apart during the rotation of the traction wheel 120. Furthermore, the guide portion 121 can be connected to the end of the swivel groove 123. This arrangement increases the distance between the fixing portion 110 and the guide portion 121, ensuring the traction wheel 120 has a sufficient range of rotation and improving the operational efficiency of the operating handle 200. Moreover, the fixing portion 110's rotatable arrangement along the swivel groove 123 makes the movement path between the guide portion 121 and the fixing portion 110 clearer, preventing instability in their rotation and improving the rotational efficiency of the fixing portion 110.

[0034] Understandably, during the rotation of the traction wheel 120, the fixed part 110 and the guide part 121 move closer to or further away from each other. Simultaneously, as shown in Figures 4 and 5 (Figure 4 shows a cross-sectional view of the drive structure 100 in its initial position, and Figure 5 shows a cross-sectional view of the drive structure 100 after rotation), the reversing part 122 around which the traction rope 140 is wound also moves closer to or further away from the fixed part 110. The reversing part 122 can tighten or loosen the traction rope 140, further increasing the extension range of the traction rope 140. A larger extension stroke of the traction rope 140 also improves the operational effect of the operating handle on the traction rope 140; that is, when driving the insertion part to rotate to the same angle, the amplitude of the operating handle's movement can be further reduced compared to existing technologies, thus expanding the scope of application of the endoscope.

[0035] In one embodiment, referring to Figures 3 and 4, the groove wall forming the swirl groove 123 has a through hole 124. The through hole 124 connects to the swirl groove 123 and is used to pass through the traction rope 140. The through hole 124 ensures that the traction rope 140 has a clear extension direction, preventing the groove wall from affecting the smooth extension of the traction rope 140. In addition, the groove wall can be composed of a reversing part 122, that is, the through hole 124 is formed in the reversing part 122. The through hole 124 can guide the traction rope 140 to the periphery of the reversing part 122, ensuring that the traction rope 140 can be guided by the reversing part 122, so that the proximal end and distal end of the traction rope 140 are respectively located on both sides of the traction wheel 120.

[0036] In some other cases, the surface of the reversing part 122 is provided with a connecting groove that connects the swivel groove 123 and the outer periphery of the reversing part 122, ensuring that the traction rope 140 extends smoothly out of the groove wall. This will not be described in detail here.

[0037] Furthermore, referring to Figure 3, a guide groove 125 is provided on the outer peripheral surface of the reversing part 122. The guide groove 125 can be adapted to the size and shape of the traction rope 140. The guide groove 125 is used to guide the traction rope 140 so that the proximal end and distal end of the traction rope 140 are respectively located on both sides of the traction wheel 120. The guide groove 125 can accommodate at least a portion of the traction rope 140, guide the traction rope 140, and give the traction rope 140 a clear winding path, preventing the traction rope 140 from detaching from the reversing part 122 and improving the driving effect of the traction wheel 120. In addition, the guide groove 125 can be connected to the through hole 124 to ensure that the traction rope 140 can extend from the through hole 124 to the guide groove 125 and be guided by the guide groove 125.

[0038] Preferably, referring again to Figure 2, to ensure that the fixing part 110 can slide within the swivel groove 123, the outer diameter of the fixing part 110 in this embodiment is smaller than the width of the swivel groove 123. When the outer diameter of the fixing part 110 is greater than or equal to the width of the swivel groove 123, the fixing part 110 cannot extend into the swivel groove 123 or slide relative to it. A fixing part 110 with a smaller outer diameter can be clearance-fitted with the swivel groove 123 to ensure the effect of relative sliding of the fixing part 110 within the swivel groove 123.

[0039] To protect the insertion portion of the endoscope, in this embodiment, referring again to FIG2, a limiting portion 127 is provided between the guide portion 121 and the fixing portion 110. The limiting portion 127 is used to limit the rotation angle of the traction wheel 120. For example, the limiting portion 127 can be provided on the groove wall forming the swirl groove 123. When the traction wheel 120 rotates to a certain position relative to the fixing portion 110, the limiting portion 127 abuts against the fixing portion 110, thereby limiting the rotation angle of the traction wheel 120. This arrangement can prevent the traction wheel 120 from rotating excessively, ensuring that the insertion portion of the endoscope can work normally. Furthermore, the limiting portion 127 can also abut against the traction rope 140 to push the traction rope 140 away from the groove wall forming the swirl groove 123, reducing the contact area between the traction rope 140 and the traction wheel 120, avoiding friction between the traction rope 140 and the groove wall, improving the stability of the endoscope, and reducing manufacturing costs.

[0040] In one embodiment, the traction rope 140 experiences sliding friction with the guide portion 121 during winding. This friction not only increases wear on the traction rope 140, reducing its service life, but also decreases the efficiency of the entire traction system due to the loss of frictional force. Referring to Figure 2, in this embodiment, the guide portion 121 is rotatably arranged relative to the traction wheel 120. This arrangement changes the friction between the traction rope 140 and the guide portion 121 from sliding friction to rolling friction, reducing wear on the guide portion 121 and increasing its service life. The introduction of rolling friction allows the traction rope 140 to slide more smoothly during winding around the guide portion 121, reducing energy loss due to frictional resistance. Under the same external force, the traction rope 140 can transmit more force and achieve a greater sliding distance, thereby improving the efficiency and performance of the entire traction system.

[0041] In another embodiment, referring to Figure 3, the guide portion 121 has a receiving groove 126, which cooperates with the traction rope 140. The receiving groove 126 is distributed circumferentially along the guide portion 121 and is used for winding the traction rope 140. The receiving groove 126 can accommodate at least a portion of the traction rope 140, and the receiving groove 126 can give the traction rope 140 a defined winding path, preventing the traction rope 140 from detaching from the guide portion 121 and improving the driving effect of the traction wheel 120.

[0042] To allow the insertion section to bend in at least two directions, the endoscope is driven by at least two traction ropes 140, i.e., one traction rope 140 pulls one side of the insertion section, and the other traction rope 140 pulls the other side of the insertion section. In this embodiment, referring to Figures 4 and 6, the guide section 121 may include a first sub-guide section 131 and a second sub-guide section 132, and the structures of the first sub-guide section 131 and the second sub-guide section 132 may be identical. The first sub-guide section 131 and the second sub-guide section 132 are rotatably disposed relative to the fixing section 110. The fixing section 110 is used to connect to the proximal ends of the first traction rope and the second traction rope. The first sub-guide section 131 is used to wrap around the first traction rope, and the second sub-guide section 132 is used to wrap around the second traction rope.

[0043] Please refer to Figures 4 and 6. The first sub-guide section 131 and the second sub-guide section 132 form a dual-guide structure, which are rotatably configured relative to the fixed section 110. When the first traction rope is pulled, it winds around the first sub-guide section 131, transmitting the tension to one side of the insertion section and causing it to bend. Similarly, when the second traction rope is pulled, it winds around the second sub-guide section 132, transmitting the tension to the other side of the insertion section and achieving bending in the other direction. This configuration not only improves the flexibility and accuracy of the endoscope insertion section but also ensures the stability and reliability of the traction rope 140 during the winding process. It allows the endoscope to be more adaptable to various complex examination and treatment environments, providing medical personnel with a more convenient and efficient tool.

[0044] The first and second traction ropes can each be multiple, thereby strengthening the overall strength of the traction rope 140 and preventing it from breaking after prolonged use.

[0045] Please refer to Figures 4 and 6. When the traction wheel 120 rotates in the first direction, the first sub-guide portion 131 and the fixed portion 110 move closer together, while the second sub-guide portion 132 moves away from the fixed portion 110. When the traction wheel 120 rotates in the second direction, the first sub-guide portion 131 and the fixed portion 110 move away from each other, while the second sub-guide portion 132 and the fixed portion 110 move closer together. The first and second directions are opposite. Furthermore, a through hole 124 is formed between the first sub-guide portion 131 and the second sub-guide portion 132. This arrangement allows two traction ropes 140 to be driven by a single traction wheel 120, enabling the insertion portion to bend in at least two directions.

[0046] Understandably, the first sub-guide portion 131 and the second sub-guide portion 132 are rotatably disposed relative to the traction wheel 120, and / or, both the first sub-guide portion 131 and the second sub-guide portion 132 have receiving grooves 126. The aforementioned related arrangements of the guide portion 121 can all be disposed in the first sub-guide portion 131 and the second sub-guide portion 132 to improve the driving effect of the traction wheel 120.

[0047] In one embodiment, referring to Figures 4 and 6, the reversing section 122 may also have a first sub-reversing section 133 and a second sub-reversing section 134. The first sub-reversing section 133 is provided corresponding to the first sub-guide section 131, and is used to wind a first traction rope wound from the first sub-guide section 131, with the proximal and distal ends of the first traction rope located on opposite sides of the first sub-guide section 131. The second sub-reversing section 134 is provided corresponding to the second sub-guide section 132, and is used to wind a second traction rope wound from the second sub-guide section 132, with the proximal and distal ends of the second traction rope located on opposite sides of the second sub-guide section 132.

[0048] To achieve the above and other related objectives, please refer to Figure 7. This application provides an operating handle 200. The operating handle 200 can adjust the control 300 and the drive structure 100 of the traction rope mentioned in any of the aforementioned solutions. Thus, the operating handle 200 possesses the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here. Specifically, the control 300 is connected to the traction wheel 120. The control 300 can be an adjustment control or a motor, etc. Medical personnel can operate the control 300 to drive the traction wheel 120 to rotate, so that the guide part 121 and the fixing part 110 move away from or closer to each other.

[0049] To achieve the above and other related objectives, this application provides an endoscope 1. Please refer to Figure 7. The endoscope 1 includes the aforementioned operating handle 200, thus enabling the endoscope 1 to possess the beneficial effects of any of the aforementioned solutions, which will not be elaborated further here. The endoscope 1 in the embodiments of this application can be a nephroscope, bronchoscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc.

[0050] This embodiment provides a drive structure 100 for a traction rope, an operating handle 200, and an endoscope 1. A fixing part 110 is connected to the proximal end of a traction rope 140, and a guide part 121 is wound around the traction rope 140. The guide part 121 can rotate at the same angle with the traction wheel 120, and the traction ropes 140 on both sides of the guide part 121 are tightened or loosened, increasing the overall tightening or loosening distance of the traction ropes 140. The insertion part of the endoscope 1 rotates to the same position. Compared with the prior art, this setting can reduce the amplitude of the adjustment control 300 operated by medical staff. The smaller amplitude of the adjustment is more suitable for medical staff to operate for a long time, reducing the discomfort caused by medical staff operating the operating handle 200, and improving the use effect and application prospects of the endoscope 1. Furthermore, the fixing end connected to the traction rope 140 is stable and does not rotate relative to the outer shell of the operating handle 200, allowing the traction rope 140 to rotate more stably and not easily shake due to changes in external force or load.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A driving structure for a traction rope, characterized in that, include: A fixing part, which is used to connect to the proximal end of the traction rope; as well as A traction wheel is rotatably disposed relative to the fixed part. The traction wheel has a guide part for winding the traction rope around it, and the winding direction and the winding direction of the traction rope in the traction wheel are opposite. When the traction wheel rotates, the guide part and the fixing part move away from or closer to each other.

2. The driving structure according to claim 1, characterized in that, The distal and proximal ends of the traction rope are located on the same side of the guide portion.

3. The driving structure according to claim 1, characterized in that, The traction wheel also includes a reversing part, and the guide part is connected to the reversing part. The reversing part is used to wind the traction rope that is wound around the guide part, and to place the proximal end and the distal end of the traction rope on both sides of the traction wheel.

4. The driving structure according to claim 3, characterized in that, The traction wheel has a swivel groove that extends around the axis of rotation of the traction wheel. The guide part is connected to the groove wall that forms the swivel groove, and the fixing part is slidably fitted inside the swivel groove.

5. The driving structure according to claim 4, characterized in that, The groove wall forming the vortex has a through hole, which connects to the vortex and is used to thread the traction rope through it; And / or, the outer peripheral surface of the reversing part is provided with a guide groove, the guide groove is used to guide the traction rope so that the proximal end and the distal end of the traction rope are respectively located on both sides of the traction wheel; And / or, the outer diameter of the fixing part is smaller than the width of the swivel groove.

6. The driving structure according to claim 1, characterized in that, A limiting part is provided between the guide part and the fixing part, and the limiting part is used to limit the rotation angle of the traction wheel.

7. The driving structure according to claim 1, characterized in that, The guide portion is rotatably disposed relative to the traction wheel; And / or, the guide portion is provided with a receiving groove, the receiving groove is distributed along the circumference of the guide portion, and the receiving groove is used to wind the traction rope.

8. The driving structure according to any one of claims 1-7, characterized in that, The guide portion includes a first sub-guide portion and a second sub-guide portion, which are rotatably disposed relative to the fixing portion. The fixing portion is used to connect to the proximal ends of the first traction rope and the second traction rope. The first sub-guide portion is used to wrap around the first traction rope, and the second sub-guide portion is used to wrap around the second traction rope.

9. An operating handle, characterized in that, It includes the drive structure and adjustment control as described in any one of claims 1-8, wherein the adjustment control is connected to the traction wheel.

10. An endoscope, characterized in that, Includes the operating handle as described in claim 9.

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