Endoscope thumbwheel assembly, endoscope handle and endoscope

Abstract

The present invention relates to the technical field of medical devices, and discloses a thumbwheel assembly of an endoscope, an endoscope handle, and an endoscope. The thumbwheel assembly of the endoscope comprises: an adjusting disk is provided with a guide groove; a thumbwheel body is coaxially connected with a traction rope wheel disk; a plurality of retractable lever members extend outward from the thumbwheel body, and the free ends of the plurality of lever members are respectively slidably matched with the guide groove; the thumbwheel body and the guide groove are configured to have a coaxial state and an eccentric state; the adjusting disk can be moved relative to the thumbwheel body to change the size of the eccentricity of the thumbwheel body and the guide groove; the movement of the adjusting disk can also switch the thumbwheel body and the guide groove between the coaxial state and the eccentric state. The endoscope handle comprises a thumbwheel assembly. The endoscope comprises an endoscope handle. The present invention can solve the technical problem that the length of the lever member cannot be adjusted according to individual differences in the endoscope in the related art through the above technical scheme.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to an endoscope thumbwheel assembly, an endoscope handle and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device that can directly access the body's natural channels for inspection, providing doctors with comprehensive diagnostic information for treating diseases. In the case of endoscopes used as digestive endoscopes, the active bending section has a larger diameter, requiring greater traction when bending. Consequently, the circumferential size of the traction rope sheave within the endoscope's control handle is reduced, sacrificing the rotation angle of the dial wheel to achieve the goal of reducing the effort required to drive the active bending section. Consequently, a larger rotation angle of the dial wheel is required.

[0003] At the same time, to further reduce the effort required to use the thumbwheel, existing digestive endoscopes have large thumbwheels. Furthermore, when the doctor grips the handle, the thumb and ring finger must wrap around the thumbwheel at corresponding angles, coordinating the force required to rotate the thumbwheel. Existing endoscopes cannot adjust the length of the thumbwheel lever to accommodate individual differences. Due to individual differences, the size of the doctor's palm and the force required to operate the endoscope vary significantly, both by individual and by gender, making it difficult to operate the endoscope effectively.

[0004] Therefore, providing an endoscope thumbwheel assembly, an endoscope handle and an endoscope that can adjust the length of the thumbwheel according to individual differences is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0005] The present invention discloses a thumbwheel assembly of an endoscope, an endoscope handle and an endoscope, so as to solve the technical problem that the length of a thumbwheel component of an endoscope in the related art cannot be adjusted according to individual differences.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] In a first aspect, a thumbwheel assembly of an endoscope is disclosed, comprising:

[0008] An adjusting disk is provided with a guide groove;

[0009] The thumbwheel body is coaxially connected to the traction rope wheel; a plurality of retractable thumbwheel members extend outward from the thumbwheel body, and the free ends of the plurality of thumbwheel members are respectively slidably engaged with the guide grooves;

[0010] The thumbwheel body and the guide groove are configured to have a coaxial state and an eccentric state; when in the eccentric state, the free end of the thumbwheel lever moves toward or away from the axis of the thumbwheel body during the rotation of the thumbwheel body;

[0011] The adjusting disk can move relative to the dial body to change the eccentricity of the dial body and the guide groove; the movement of the adjusting disk can also switch the dial body and the guide groove between a coaxial state and an eccentric state.

[0012] In some solutions, the adjusting disk is provided with a sliding groove, which extends radially along the adjusting disk; the dial body is in sliding engagement with the sliding groove.

[0013] In some embodiments, the adjustment disk can be rotated relative to the thumbwheel body to change the position of the slide slot;

[0014] And / or, a locking member is further included to limit the movement and rotation of the adjusting disk.

[0015] In some solutions, the free ends of the plurality of lever members extend to the outside of the adjusting disk.

[0016] In some embodiments, the lever member includes a lever body and a telescopic sleeve;

[0017] The telescopic sleeve is slidably sleeved on the distal end of the lever body; the telescopic sleeve is provided with a fixing rod, the end of the fixing end extends into the guide groove and slidably cooperates with the guide groove.

[0018] In some solutions, the end portion of the fixing rod extending into the guide groove has a spherical structure.

[0019] In some embodiments, the guide groove has a first guide portion and a second guide portion, and the curvature of the second guide portion is smaller than the curvature of the first guide portion;

[0020] In the eccentric state, the plurality of lever members are configured such that when the extension of one of the lever members is greater than the extension of the other lever members, the free end of the lever member is engaged with the second guide portion.

[0021] In some embodiments, an opening is provided on the end surface of the telescopic sleeve facing the thumbwheel body, and the width of the opening along the axial direction of the thumbwheel body is greater than or equal to the width of the thumbwheel body along its own axial direction;

[0022] There is a gap between the regulating disc and the dial body; the width of the gap along the axial direction of the dial body is greater than or equal to the width between the bottom of the opening and the bottom of the telescopic sleeve.

[0023] In a second aspect, an endoscope handle is disclosed, comprising the endoscope thumbwheel assembly of the first aspect.

[0024] In a third aspect, an endoscope is disclosed, comprising the endoscope handle in the second aspect.

[0025] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0026] In the thumbwheel assembly of the endoscope of the present application, in the initial use state, the thumbwheel body and the guide groove are in a coaxial state. In this coaxial state, the lengths of the plurality of lever members remain fixed during the rotation of the thumbwheel body. The operator moves the position of the adjustment dial so that the thumbwheel body and the guide groove are in an eccentric state. In this eccentric state, the free ends of the plurality of lever members move toward or away from the axis of the thumbwheel body during the rotation of the thumbwheel body, thereby achieving a labor-saving effect by increasing the length of the lever arm. In addition, the operator can move the adjustment dial according to their own usage needs, change the size of the eccentricity of the thumbwheel body and the guide groove, adjust the maximum extension of the lever member, and select a lever arm of appropriate length. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] Figure 1 is an axial view of the endoscope handle of the present invention;

[0029] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 This is an axial view of the concentric state of the thumbwheel assembly of the present invention

[0031] Figure 4 This is an axial view of the thumbwheel assembly of the present invention in an eccentric state;

[0032] Figure 5 It is a structural schematic diagram of the telescopic sleeve of the present invention;

[0033] Figure 6 is an axial view of the locking member of the present invention;

[0034] Figure 7 This is a schematic structural diagram of the present invention in which the guide groove of the adjusting disk is circular;

[0035] Figure 8 This is a schematic structural diagram of the present invention in which the guide groove of the adjusting disk is elliptical;

[0036] Figure 9 This is a schematic structural diagram of the adjustment disk of the present invention with a mounting hole;

[0037] Figure 10 2. It is a schematic structural diagram of the first guide portion and the second guide portion of the present invention;

[0038] Figure 11This is a schematic diagram of the structure of the fixing rod in some embodiments of the present invention. Figure 1 ;

[0039] Figure 12 This is a schematic diagram of the structure of the fixing rod in some embodiments of the present invention. Figure 2 .

[0040] In the picture:

[0041] 100 - dial assembly, 110 - dial body, 120 - adjustment disk, 121 - guide groove, 1211 - first guide portion, 1212 - second guide portion, 122 - slide groove, 123 - mounting hole, 130 - lever, 131 - lever body, 132 - telescopic sleeve, 1321 - opening, 1322 - anti-slip structure, 133 - fixing rod, 1331 - spherical structure, 140 - locking member;

[0042] 200-Endoscope handle. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0044] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0045] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0046] The applicant discovered during use that, for an endoscope used as a digestive scope, since the active bending section of the digestive scope has a larger diameter, a greater traction force is required when bending. Therefore, the circumferential size of the traction rope pulley in the corresponding endoscope control handle becomes smaller, and the purpose of driving the active bending section to save effort is achieved by sacrificing the rotation angle of the dial wheel. Therefore, this also requires the dial wheel to rotate at a larger angle. At the same time, in order to further improve the purpose of saving effort in the dial wheel, the dial wheels of existing digestive scopes are all larger in size, and when the doctor holds the handle, the thumb and ring finger are required to wrap around the dial wheel from the corresponding angle, and coordinate the force to drive the dial wheel to rotate. Existing endoscopes cannot adjust the length of the dial rod on the dial wheel according to individual differences. Due to individual differences, the size of the doctor's palm and the strength of the finger dialing vary greatly due to individual or gender differences, and the endoscope cannot be operated well.

[0047] The following is combined with Figures 1 to 12 , an endoscope thumbwheel assembly 100, an endoscope handle 200 and an endoscope provided in the present application are described in detail through specific embodiments and their application scenarios.

[0048] Some embodiments of the present application provide a thumbwheel assembly 100 of an endoscope, such as Figure 2-Figure 4 As shown, it includes an adjusting disk 120 and a dial body 110.

[0049] like Figure 2-Figure 4 As shown, the thumbwheel body 110 is coaxially connected to the traction rope sheave. In this embodiment, the traction rope sheave is located inside the endoscope handle 200, and the traction rope is wound around the traction rope sheave. The thumbwheel body 110 is located outside the endoscope handle 200. The end of the thumbwheel body 110 passes through the endoscope handle 200 and is coaxially connected to the traction rope sheave. By rotating the thumbwheel body 110, the traction rope sheave rotates synchronously, thereby moving the traction rope back and forth.

[0050] like Figure 2-Figure 4 As shown, several levers 130 extend outward from the thumbwheel body 110. The levers 130 serve as levers for rotating the thumbwheel body 110, allowing the operator to more easily rotate the thumbwheel body 110. During use, the operator grasps the endoscope handle 200 at the base of their palm and uses any two of their thumb, index finger, middle finger, ring finger, or pinky finger to move the distal end of the levers 130, thereby rotating the thumbwheel body 110.

[0051] In this embodiment, the number of the lever members 130 can be two, three, four or more, and can be flexibly set according to usage requirements.

[0052] In this embodiment, the angles between any two adjacent levers 130 are equal, so that the operator can more accurately control the rotation angle and speed of the dial body 110 when rotating the dial body 110 by shifting the lever 130, thereby improving the accuracy of the operation.

[0053] like Figure 3 and Figure 4 As shown, the lever 130 is a telescopic structure. The free end of the lever 130 moves toward or away from the thumbwheel body 110, so that the length of the lever 130 can be changed, thereby changing the length of the lever arm for rotating the thumbwheel body 110.

[0054] like Figure 2-Figure 4 As shown, the adjusting disk 120 has a guide groove 121, and the free ends of the plurality of lever members 130 are slidably engaged with the guide groove 121. The guide groove 121 and the dial body 110 are configured to have a coaxial state and an eccentric state, as shown in FIG. Figure 3 and Figure 4 shown.

[0055] When the thumbwheel body 110 is in the eccentric state, the free ends of the plurality of thumbwheel members 130 move toward or away from the axis of the thumbwheel body 110 during rotation, thereby increasing the length of the lever arm and achieving a labor-saving effect.

[0056] When in the coaxial state, at any two symmetrical positions of the guide groove 121 , the extension amount of the lever member 130 is the same, which is the same as the existing endoscope handle 200 .

[0057] In some embodiments, as Figure 7 As shown, the guide groove 121 is circular in shape. When the guide groove 121 and the thumbwheel body 110 are coaxial, the lengths of the plurality of thumbwheel members 130 remain constant during the rotation of the thumbwheel body 110.

[0058] In some embodiments, as shown in FIG8 , the guide groove 121 is elliptical. When the guide groove 121 and the dial body 110 are coaxial, the free end of the lever 130 moves toward or away from the axis of the dial body 110 during rotation.

[0059] Among them, in this embodiment, the guide groove 121 is preferably circular, so that the thumbwheel assembly 100 can also have the same state as a conventional endoscope, meeting the needs of operators with greater strength.

[0060] like Figure 3 and Figure 4As shown, the adjustment disk 120 can be moved relative to the dial body 110 to change the eccentricity between the dial body 110 and the guide slot 121. The operator can move the adjustment disk 120 according to their needs, change the eccentricity between the dial body 110 and the guide slot 121, adjust the maximum extension of the lever 130, and select an appropriate length of the lever arm to better rotate the dial body 110.

[0061] Correspondingly, by moving the adjustment disk 120 , the dial body 110 and the guide groove 121 can be switched between a coaxial state and an eccentric state.

[0062] In some embodiments, as Figure 7 and Figure 8 As shown, the adjusting disk 120 is provided with a slide groove 122 , which extends radially along the adjusting disk 120 , and the dial body 110 slides in cooperation with the slide groove 122 , thereby achieving the purpose of the adjusting disk 120 being able to move relative to the dial body 110 .

[0063] In some embodiments, as Figure 9 As shown, the adjusting disk 120 is provided with a plurality of mounting holes 123 in the radial direction. The dial body 110 is connected to the traction rope sheave and the adjusting disk 120 in a plug-in manner. The dial body 110 is pulled out from the traction rope sheave and then mounted on different mounting holes 123 of the adjusting disk 120, so that the adjusting disk 120 can be moved relative to the dial body 110.

[0064] Among them, this embodiment preferably provides the adjusting disk 120 with a slide groove 122. Compared with setting a number of mounting holes 123 on the adjusting disk 120, setting the slide groove 122 can make the method of moving the adjusting disk 120 simpler and closer to the actual usage scenario. Secondly, it can make the adjusting disk 120 steplessly adjustable, with a larger adjustable range, which is suitable for use by more different individual operators.

[0065] like Figure 7 As shown, the adjustment dial 120 is rotatable relative to the dial body 110. In the eccentric position, the guide slot 121 has a farthest point P1 relative to the dial body 110. During rotation of the dial body 110, the lever 130 reaches its maximum extension when its free end is at the farthest point P1, compared to lever 130 in other positions. The farthest point P1 of the guide slot 121 is collinear with the extension direction of the guide slot 121. Therefore, by rotating the adjustment dial 120, the position of the guide slot 122 is changed, thereby changing the position of the lever 130 at its maximum extension. When the operator grasps the endoscope handle 200, by rotating the adjustment dial 120, the lever 130 with the greatest extension can correspond to any of the thumb, index finger, middle finger, ring finger, or little finger, thereby meeting the usage habits of different operators.

[0066] like Figure 2-Figure 4 and Figure 6 As shown, the apparatus further includes a locking member 140 for limiting the movement and rotation of the adjustment disk 120. During surgery, if the position and angle of the adjustment disk 120 change, this can easily disrupt the operator's muscle memory, which has been developed through endoscope use, requiring them to re-adapt to the thumbwheel assembly 100, which can negatively impact the surgical process. Therefore, this embodiment includes a locking member 140 to prevent the position and angle of the adjustment disk 120 from changing during surgery, ensuring a smooth surgical procedure.

[0067] Accordingly, by releasing the locking member 140 , the position and angle of the adjustment disk 120 can be changed.

[0068] In this embodiment, the adjustment disk 120 is arranged between the endoscope handle 200 and the dial body 110, and one end of the locking member 140 is inserted into the slide groove 122 of the adjustment disk 120 along the axis of the dial body 110, using friction to limit the sliding and rotation of the adjustment disk 120.

[0069] like Figure 2-Figure 4 As shown, the free end of the lever 130 extends outside the adjustment disk 120. When the operator grasps the endoscope handle 200, since the free end of the lever 130 extends outside the adjustment disk 120, the operator's fingers can easily touch the lever 130 and thus move the lever 130. In contrast, if the free end of the lever 130 is located inside the adjustment disk 120, the operator would need to deliberately bend the tips of their fingers inward when grasping the endoscope handle 200 to possibly touch the lever 130. During intraoperative operation, the tips of the fingers being bent for a long time will cause increased fatigue, which is not conducive to long-term use by the operator.

[0070] like Figure 2-Figure 4 As shown, the lever 130 includes a lever body 131 and a telescopic sleeve 132. The proximal end of the lever body 131 is connected to the dial body 110, while the distal end is slidably engaged with the telescopic sleeve 132. The telescopic sleeve 132 slides on the lever body 131 to adjust the length of the lever 130, thereby adjusting the length of the lever arm when rotating the dial body 110.

[0071] like Figure 3-Figure 5 As shown, the telescopic sleeve 132 has a dial surface, and the dial surface has an anti-slip structure 1322. When the operator holds the endoscope handle 200, the operator's fingers are in direct contact with the dial surface of the telescopic sleeve 132. Therefore, the anti-slip structure 1322 is provided on the dial surface. When the operator dials the lever 130, the anti-slip structure 1322 is provided to minimize relative sliding between the operator's fingers and the dial surface, thereby allowing the operator to better operate the thumbwheel assembly 100.

[0072] In this embodiment, the anti-slip structure 1322 is a plurality of wave-shaped protrusions; of course, the anti-slip structure 1322 may also be in other shapes, which is not limited in this embodiment.

[0073] like Figure 5 As shown, the telescopic sleeve 132 is provided with a fixed rod 133. The end of the fixed rod 133 extends into the guide groove 121 and slides with the guide groove 121. During the rotation of the dial body 110, the guide groove 121 guides the movement of the telescopic sleeve 132, so that the movement trajectory of the telescopic sleeve 132 has the same shape as the guide groove 121. When in an eccentric state, due to the interference between the guide groove 121 and the fixed rod 133, the telescopic sleeve 132 can move toward or away from the axis of the dial body 110 during rotation of the dial body 110, thereby linking the adjustment disk 120 with the plurality of deflecting rods 130. By changing the position of the adjustment disk 120, the maximum extension of the deflecting rods 130 can be changed, making it easier for the operator to quickly and easily adjust the length of the deflecting rods 130 to a desired range during surgery.

[0074] In some embodiments, as Figure 11 As shown, the fixing rod 133 is linear. In this state, the pattern formed by the connection line of several fixing rods 133 is identical with the track of the guide groove 121.

[0075] In some embodiments, as Figure 12 As shown, the fixing rod 133 has a bent structure. In this state, the pattern formed by the connection line of the plurality of fixing rods 133 covers the track of the guide groove 121, or is covered by the track of the guide groove 121.

[0076] As preferred, a spring is provided between the telescopic sleeve 132 and the dial body 110. Through the spring, the telescopic sleeve 132 can be well prevented from falling off the dial rod body 131.

[0077] like Figure 5 、 Figure 11 and Figure 12 As shown, the end portion of the fixing rod 133 extending into the guide groove 121 has a spherical structure 1331. During the rotation of the dial body 110, due to the presence of the spherical structure 1331, the contact area between the fixing rod 133 and the guide groove 121 is small, thereby reducing the friction force during the rotation of the dial body 110, allowing the operator to rotate the dial body 110 more easily.

[0078] As a preferred solution of this embodiment, Figure 10As shown, the guide groove 121 has a first guide portion 1211 and a second guide portion 1212, wherein the curvature of the second guide portion 1212 is smaller than that of the first guide portion 1211. In the eccentric state, the plurality of lever members 130 are configured such that when the extension of one lever member 130 is greater than the extension of the other lever members 130, the free end of the lever member 130 engages with the second guide portion 1212.

[0079] During the rotation of the thumbwheel body 110, when one of the lever members 130 is extended to the maximum extent, the lever member 130 corresponds exactly to one of the operator's fingers, and the free end of the lever member 130 with the maximum extension is located exactly within the second guide portion 1212. Due to the smaller curvature of the second guide portion 1212, the displacement of the free end of the lever member 130 during movement in the second guide portion 1212 is smaller than that during movement in the first guide portion 1211, i.e., the reduction in the lever arm is smaller.

[0080] In actual use, the operator's finger does not flick the lever 130 just once, but rather continuously moves the lever 130 within a range. Therefore, by providing the second guide portion 1212 with a smaller slope, the lever 130 maintains a longer moment arm within the second guide portion 1212, further reducing the force required by the operator to rotate the dial body 110.

[0081] In some embodiments, the first guide portion 1211 and the second guide portion 1212 are each one, and two ends of the first guide portion 1211 are connected to two ends of the second guide portion 1212 respectively.

[0082] In some embodiments, there are two first guide portions 1211 and two second guide portions 1212 , and the two first guide portions 1211 and the two second guide portions 1212 are alternately connected.

[0083] like Figure 5 As shown, the end surface of the telescopic sleeve 132 facing the dial body 110 is provided with an opening 1321 , and the width of the opening 1321 along the axial direction of the dial body 110 is greater than or equal to the width of the dial body 110 along its own axial direction.

[0084] In the eccentric state, the guide groove 121 has a farthest point P1 relative to the dial body 110. Naturally, the guide groove 121 also has a closest point P2 relative to the dial body 110. Figure 7As shown in the figure, the closer the end of the chute 122 is to the nearest point P2, the greater the maximum extension of the lever 130 and the greater the lever arm. Therefore, by providing an opening 1321 on the end surface of the telescopic sleeve 132 facing the thumbwheel body 110, the thumbwheel body 110 can be inserted into the opening 1321, so that the end of the chute 122 is as close as possible to the nearest point P2 of the guide groove 121, thereby maximizing the maximum extension of the lever 130 and increasing the lever arm.

[0085] like Figure 4 As shown, there is a gap between the adjusting disk 120 and the dial body 110, and the width of the gap along the axial direction of the dial body 110 is greater than or equal to the width between the bottom of the opening 1321 and the bottom of the telescopic sleeve 132. When the telescopic sleeve 132 moves toward the axis of the dial body 110 and contacts the dial body 110, the bottom portion of the telescopic sleeve 132 can move within the gap between the adjusting disk 120 and the dial body 110, thereby avoiding motion interference between the adjusting disk 120, the dial body 110, and the telescopic sleeve 132.

[0086] Some embodiments of the present application also provide an endoscope handle 200, such as Figure 1 As shown, a thumbwheel assembly 100 is included.

[0087] Some embodiments of the present application further provide an endoscope, including an endoscope handle 200 .

[0088] The endoscope in the embodiment of the present application is preferably a digestive scope. Of course, the endoscope can also be a bronchoscope, pyeloscope, esophagoscope, gastroscope, otoscope, rhinoscope, oral scope, laryngoscope, colposcope, laparoscope, arthroscope, etc.

[0089] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0090] Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in reverse order depending on the functions involved. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0091] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A thumbwheel assembly for an endoscope, characterized in that: include: An adjusting disk provided with a guide groove; The pulley body is coaxially connected to the traction rope wheel; the pulley body is provided with a plurality of retractable pull rods extending outwardly, and the free ends of the plurality of pull rods are respectively slidably matched with the guide grooves; The thumbwheel body and the guide groove are configured to have a coaxial state and an eccentric state; when in the eccentric state, the free end of the lever moves toward or away from the axis of the thumbwheel body during the rotation of the thumbwheel body; The adjusting disk can move relative to the dial body to change the eccentricity of the dial body and the guide groove; the movement of the adjusting disk can also switch the dial body and the guide groove between a coaxial state and an eccentric state.

2. The thumbwheel assembly of an endoscope according to claim 1, characterized in that: The adjusting disk is provided with a slide groove, and the slide groove extends along the radial direction of the adjusting disk; the dial body is slidably matched with the slide groove.

3. The thumbwheel assembly of an endoscope according to claim 2, characterized in that: The adjusting disk can rotate relative to the dial body to change the position of the slide slot; And / or, a locking member is further included to limit the movement of the adjusting disk and the rotation of the adjusting disk.

4. The thumbwheel assembly of an endoscope according to claim 1, characterized in that: The free ends of the plurality of lever members extend to the outside of the adjusting disk.

5. The thumbwheel assembly of an endoscope according to claim 1, characterized in that: The lever member comprises a lever body and a telescopic sleeve; The telescopic sleeve is slidably sleeved on the distal end of the lever body; the telescopic sleeve is provided with a fixing rod, and the end of the fixing rod extends into the guide groove and slidably cooperates with the guide groove.

6. The thumbwheel assembly of an endoscope according to claim 5, characterized in that: The end portion of the fixing rod extending into the guide groove has a spherical structure.

7. The thumbwheel assembly of an endoscope according to claim 1, characterized in that: The guide groove has a first guide portion and a second guide portion, and the curvature of the second guide portion is smaller than the curvature of the first guide portion; When in the eccentric state, the plurality of lever members are configured such that when the elongation of one of the lever members is greater than the elongation of the other lever members, the free end of the lever member is cooperatively connected with the second guide portion.

8. The thumbwheel assembly of an endoscope according to claim 5, characterized in that: The telescopic sleeve is provided with an opening on the end surface facing the thumbwheel body, and the width of the opening along the axial direction of the thumbwheel body is greater than or equal to the width of the thumbwheel body along its own axial direction; There is a gap between the adjusting disk and the dial body; the width of the gap along the axial direction of the dial body is greater than or equal to the width between the bottom of the opening and the bottom of the telescopic sleeve.

9. An endoscope handle, characterized in that: A thumbwheel assembly for an endoscope comprising the invention as described in any one of claims 1 to 8.

10. An endoscope, characterized in that: Including the endoscope handle as described in claim 9.

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