Endoscope handle and endoscope

Abstract

The application relates to the technical field of endoscopes, in particular to an endoscope handle and an endoscope, which comprise a shell, a traction wheel and a push rod, the shell is provided with a rotating hole, the inner side port of the rotating hole is provided with an inner taper surface, and the inner wall of the shell is provided with a mounting groove; the traction wheel comprises a rotating shaft and a rotating disc, the rotating shaft comprises a first rotating fit part, a transition part and a second rotating fit part which are sequentially arranged along an axial direction, and the push rod is detachably connected with the first rotating fit part. According to the application, the transition taper surface is matched with the inner taper surface, and the damping ring, the second rotating fit part and the inner wall of the mounting groove are matched, the ability of the rotating shaft to resist lateral deviation is enhanced, the problem of angle deviation caused by the directional bending of the distal end of the insertion part is avoided due to the assembly gap, the bending control precision of the endoscope is improved, meanwhile, the endoscope handle and the endoscope allow a larger assembly gap between the rotating shaft and the rotating hole, the production efficiency of the endoscope is improved, and the production cost of the endoscope is reduced.

Description

Technical Field

[0001] This application relates to the field of endoscope technology, and more particularly to an endoscope handle and an endoscope. Background Technology

[0002] An endoscope is a medical device that integrates optics, electronics, precision mechanics, and software processing. Its core mission is to "penetrate deep into the body's natural orifices or small surgical incisions to observe and manipulate internal organs." An endoscope generally consists of a handle and an insertion section. To achieve directional bending of the distal end of the insertion section, a lever and a traction wheel assembly are typically installed on the handle. The lever actuates the traction wheel assembly, which in turn winds up / releases the traction rope, pulling the distal end of the insertion section and causing it to bend in a specific direction.

[0003] To reduce the rotational resistance between the traction wheel and the housing, existing technologies typically use a damping ring between them to reduce the contact area and thus decrease rotational resistance. However, during the development of this invention, the applicant discovered that the angle of directional bending at the distal end of the insertion part deviates when the lever is pressed and when it is released from pressure. The applicant's analysis revealed that because the traction wheel and damping ring are located inside the housing, while the lever is outside, the connecting structure between the traction wheel and lever must pass through the housing. Due to the influence of component machining precision, an assembly gap inevitably exists between the connecting structure and the housing. This gap is caused by the pressing of the lever. When the damping ring and the housing contact point are used as the fulcrum, and the connection structure between the traction wheel and the lever is used as the lever arm, the damping ring will undergo unilateral pressing deformation, causing the traction wheel and the damping ring to deviate from their original axes. This results in play when the traction wheel presses the lever. When the lever is released, the damping ring recovers its elastic deformation, causing the traction wheel to return to its original axis after the insertion part completes directional bending. During the recovery process of the traction wheel, the traction rope will affect the directional bending angle of the insertion part. This will cause a certain deviation in the directional bending angle of the distal end of the insertion part when the lever is pressed and when the lever is released, reducing the endoscope bending control accuracy and operating feel. Summary of the Invention

[0004] The purpose of this application is to provide an endoscope handle and endoscope, which at least solves the problem that the angle of directional bending of the distal end of the insertion part will deviate when pressing the lever and stopping the pressing of the lever, thereby improving the endoscope bending control accuracy and operating feel.

[0005] This application is implemented as follows: In a first aspect, this application provides an endoscope handle, comprising: The housing has a rotating hole, the inner port of the rotating hole has an inner conical surface, and the inner wall of the housing has a mounting groove. The traction wheel includes a rotating shaft and a rotating disk. The rotating disk has a mounting position for fixing a traction rope. The rotating shaft includes a first rotating mating part, a transition part, and a second rotating mating part arranged sequentially along the axial direction. The first rotating mating part passes through a rotating hole, and the second rotating mating part is located close to the traction wheel and is located in a mounting groove. A damping ring is provided between the second rotating mating part and the inner wall of the mounting groove. The transition part has a transition conical surface, which corresponds to the inner conical surface. Based on the mating of the transition conical surface and the inner conical surface, as well as the mating between the damping ring, the second rotating mating part, and the inner wall of the mounting groove, the coaxial arrangement of the rotating shaft and the rotating hole is achieved. A lever, the lever including a connecting part, the connecting part being detachably connected to a first rotating engagement part.

[0006] Secondly, this application provides an endoscope, including an insertion part and the aforementioned endoscope handle, wherein the proximal end of the insertion part is connected to the distal end of the handle.

[0007] The technical solution provided in this application can achieve the following beneficial effects: This application enhances the ability of the rotating shaft to resist lateral offset by utilizing the fit between the transition conical surface and the inner conical surface, as well as the fit between the damping ring, the second rotating mating part, and the inner wall of the mounting groove. This ensures that the traction wheel remains coaxial with the rotating hole during pressing and traction, thereby avoiding the angular deviation problem caused by the assembly gap between the rotating shaft and the rotating hole when the distal end of the insertion part is bent. This improves the bending control accuracy of the endoscope and achieves a stable and smooth operating feel. At the same time, it allows for a larger assembly gap between the rotating shaft and the rotating hole, which not only reduces the machining accuracy requirements of the rotating shaft and the rotating hole, but also helps to reduce the assembly difficulty and the operating resistance when the lever is pressed and rotated, thereby improving the production efficiency of the endoscope and reducing the manufacturing cost of the endoscope. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of the structure of the endoscope disclosed in the embodiments of this application; Figure 2 This is a schematic diagram of the internal structure of the endoscope handle disclosed in the embodiments of this application; Figure 3 This is an exploded view of the endoscope handle (view from inside the housing) disclosed in the embodiments of this application; Figure 4 This is an exploded view of the endoscope handle (viewed from the outside of the housing) disclosed in the embodiments of this application; Figure 5 This is a front view of the endoscope handle disclosed in the embodiments of this application; Figure 6 yes Figure 5 Sectional view along line AA; Figure 7 yes Figure 6 A magnified view of a section at point B in the middle; Figure 8 yes Figure 6 A magnified view of a section at point C; Figure 9 This is a schematic diagram of the structure of the traction wheel disclosed in the embodiments of this application; Figure 10 This is a schematic diagram of the lever structure disclosed in the embodiments of this application.

[0010] In the picture: 100. Housing; 110. Mounting groove; 120. Rotating hole; 121. Inner conical surface; 122. Outer conical surface; 130. Protrusion; 210. Rotating disk; 211. Mounting position; 220. Rotating shaft; 221. First rotating mating part; 222. Transition part; 223. Second rotating mating part; 224. Annular groove; 230. Damping ring; 300. Toggle lever; 310. Mating surface; 320. Through hole; 400. Fixing member; 410. Abutting part; 411. Stopping surface; 420. Rod part; 500. Insertion part; L1. First preset gap; L2. Second preset gap. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0012] In the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0013] In various embodiments of this application, "proximal end" and "distal end" refer to the position of the endoscope and its accessories relative to the user in the usage environment. 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".

[0014] This application provides a channel interface component, an endoscope handle, and an endoscope, which at least solve the technical problem of surgical risks caused by accidental activation of a rotary switch, and reduce assembly difficulty and packaging and transportation costs, as described in the following embodiments.

[0015] Example 1

[0016] This embodiment provides an endoscope, such as Figure 1 As shown, the endoscope includes a handle and an insertion part 500. The insertion part 500 has an instrument channel along the axial direction. The proximal port of the instrument channel can be located on the handle. There can be one or more proximal ports of the instrument channel. The distal port of the instrument channel is located at the distal end of the insertion part 500. The instrument channel is used to allow surgical instruments, irrigation fluid, or negative pressure aspiration fluid to pass through. The surgical instruments are existing technologies and can be injection needles, dilators, stents, stone retrieval baskets, optical fibers, biopsy forceps, hemostatic clips, etc., without specific limitations. The irrigation fluid can be physiological saline, a drug, or a gas, without specific limitations.

[0017] Specifically, a traction rope assembly is provided on the handle. This assembly controls the directional bending of the distal end of the insertion part 500. The traction rope assembly is existing technology; exemplarily, it includes a traction rope, the distal end of which is connected to the distal end of the insertion part, and the proximal end of which is connected to a traction wheel. A lever is connected to the traction wheel. By manipulating the lever 300, the traction wheel is rotated, pulling the traction rope on one side of the insertion part 500 towards the proximal end, while simultaneously releasing the traction rope on the other side of the insertion part 500 towards the distal end. The traction ropes on both sides of the insertion part 500 move in opposite directions. The movement causes the distal end of the insertion part 500 to bend in a specific direction. In other examples, a single-sided traction rope can be used to control the unilateral directional bending of the insertion part 500. Multiple traction ropes can also be used to achieve four-way bending of the insertion part 500. All examples of traction rope assemblies that achieve the directional bending function of the insertion part 500 can directly adopt existing designs. An illumination unit and a camera module are provided on the distal end surface of the insertion part 500. The illumination unit is used to provide illumination light, and the camera module is used to acquire image information of the interior of the distal end cavity of the insertion part.

[0018] For endoscope handles, such as Figures 2-4 As shown, it specifically includes: The housing 100 has a rotating hole 120, an inner conical surface 121 on the inner port of the rotating hole 120, and an installation groove 110 on the inner wall of the housing 100. Traction wheel, such as Figure 9As shown, the traction wheel includes a rotating shaft 220 and a rotating disk 210. The rotating disk 210 is provided with a mounting position 211 for fixing and connecting the traction rope. The rotating shaft 220 includes a first rotating mating part 221, a transition part 222, and a second rotating mating part 223 arranged sequentially along the axial direction. The first rotating mating part 221 passes through the rotating hole 120. The second rotating mating part 223 is arranged closer to the traction wheel than the transition part 222. The second rotating mating part 223 is located in the mounting groove 110. A damping ring 230 is provided between the second rotating mating part 223 and the inner wall of the mounting groove 110. A transition cone surface is provided on the transition part 222. The transition cone surface is corresponding to the inner cone surface 121. Based on the mating between the transition cone surface and the inner cone surface 121, and the mating between the damping ring 230, the second rotating mating part 223, and the inner wall of the mounting groove 110, the rotating shaft 220 and the rotating hole 120 are coaxially arranged. The lever 300 includes a connecting part, which is detachably connected to the first rotating engagement part 221.

[0019] Based on the above structural design, during production and assembly, the damping ring 230 can be first fitted onto the second rotating mating part 223, and then the rotating shaft 220 can be inserted from the inside of the housing 100 into the rotating hole 120, allowing the second rotating mating part 223 to be placed into the mounting groove 110. The second rotating mating part 223 abuts against the inner wall of the mounting groove 110 through the damping ring 230. At this time, based on the fit between the damping ring 230, the second rotating mating part 223, and the inner wall of the mounting groove 110, pre-fixation between the traction wheel and the housing 100 can be achieved, preventing shaking between the traction wheel and the housing 100 during subsequent assembly, reducing assembly difficulty. Then, the lever 300 is fixedly connected to the first rotating mating part 221. During the fixed connection of the rotating mating part 221, the traction wheel is pulled outward along the circumference of the rotating shaft 220, causing the transition cone surface to abut against the inner cone surface 121. Based on the fit between the transition cone surface and the inner cone surface 121, the rotating shaft 220 and the rotating hole 120 adaptively approach coaxiality during assembly. When the lever 300 and the first rotating mating part 221 are fixedly connected, the rotating shaft 220 and the rotating hole 120 are coaxial. At this time, if it is necessary to press the lever 300 to control the rotation of the traction wheel, the force is transmitted to the rotating shaft 220. Even if there is an assembly gap between the rotating shaft 220 and the rotating hole 120, this embodiment, based on the cone surface fit between the transition cone surface and the inner cone surface 121, can effectively resist the force. In the event of lateral displacement under force (lateral displacement refers to the rotation shaft 220 deviating from the axis of the rotation hole 120), the rotation shaft 220 can still resist lateral displacement by using the mating point between the transition cone surface and the inner cone surface 121 as a fulcrum and generating a reaction force based on the abutment between the mating damping ring 230 and the inner wall of the mounting groove 110. This enhances the rotation shaft 220's ability to resist lateral displacement, ensuring that the traction wheel remains coaxial with the rotation hole 120 during rotation. This avoids the problem in the prior art where the assembly gap between the rotation shaft 220 and the rotation hole 120 causes a certain deviation in the directional bending angle of the distal end of the insertion part 500 when pressing and unpressing the lever 300. This improves the endoscope's bending control accuracy and achieves a stable and smooth operating feel. Meanwhile, the rotating shaft 220 achieves radial contact with the rotating hole 120 at one point based on the cooperation between the transition conical surface and the inner conical surface 121, and also achieves radial contact through the damping ring 230 and the inner wall of the mounting groove 110. The two radial contacts not only ensure the coaxial stability of the rotating shaft 220 and the rotating hole 120, but also allow for a larger assembly clearance between the rotating shaft 220 and the rotating hole 120. This not only reduces the machining accuracy requirements of the rotating shaft 220 and the rotating hole 120, but also facilitates the rapid passage of the rotating shaft 220 through the rotating hole 120 for assembly and fixation, reduces the assembly difficulty and the control resistance when the lever 300 is pressed and rotated, improves the endoscope production efficiency, and reduces the endoscope manufacturing cost.

[0020] In some embodiments, to improve the ability of the rotating shaft 220 to resist lateral displacement during directional bending, and to improve the control precision of the directional bending of the insertion portion 500, such as... Figures 3-8 As shown, an axial abutment fit can be set between the lever 300 and the housing 100. When the lever 300 is pressed to rotate the traction wheel, the force is transmitted to the rotating shaft 220. Using the mating point of the transition cone surface and the inner cone surface 121 as a fulcrum, and based on the axial abutment fit between the lever 300 and the housing 100, the damping ring 230 and the inner wall of the mounting groove 110 are replaced to increase the resistance to lateral displacement of the rotating shaft 220. This ensures that even when there is an assembly gap between the rotating shaft 220 and the rotating hole 120... The rotating shaft 220 can always remain coaxial with the rotating hole 120, avoiding the problem of reduced directional bending accuracy of the insertion part 500 due to lateral displacement of the traction wheel. At the same time, it can also reduce the frequency of elastic deformation of the damping ring 230 due to resisting lateral displacement, thereby extending the service life of the damping ring 230. This ensures long-term stability of the control resistance of the lever 300 and the lateral displacement resistance of the traction wheel, thus maintaining long-term stability of the directional bending control accuracy of the endoscope and effectively improving the quality of the endoscope product and the user experience.

[0021] In some embodiments, to improve the structural assembly stability of the traction wheel and the housing 100, an annular groove 224 can be provided on at least one of the second rotating mating part 223 and the inner wall of the mounting groove 110. The annular groove 224 is used to install the damping ring 230, making it less prone to axial movement after assembly, thereby improving the stability of the traction wheel during rotation. Simultaneously, the annular groove 224 also provides a limiting effect on the damping ring 230, effectively preventing the damping ring 230 from shifting or deforming due to compression when the traction wheel is subjected to radial loads, further ensuring the coaxiality between the rotating shaft 220 and the rotating hole 120. Furthermore, this structural design simplifies the assembly process, prevents the damping ring 230 from slipping or misaligning during installation, and improves product consistency and reliability.

[0022] In some embodiments, to reduce the resistance of the control lever 300 in adjusting the directional bending angle of the insertion portion 500, such as... Figure 6 and Figure 7 As shown, a first preset gap L1 can be provided between the second rotating mating part 223 and the inner wall of the mounting groove 110. The size of the first preset gap L1 is configured to ensure that the damping ring 230 can effectively play a drag-reducing role while avoiding assembly difficulties due to excessively small gaps. This gap also reduces the resistance of inserting the second rotating mating part 223 into the mounting groove 110 during the assembly process, thereby reducing the assembly difficulty and cost of the endoscope handle.

[0023] In some embodiments, to reduce manufacturing costs, the damping ring 230 can be set to a radially compressed state under normal conditions, using its own elastic reaction force to simultaneously abut against the second rotating mating part 223 and the inner wall of the mounting groove 110. This allows the damping ring 230 to provide stable radial support for the rotating shaft 220, thereby achieving structural stability while allowing a larger gap between the second rotating mating part 223 and the inner wall of the mounting groove 110. This reduces the precision requirements for the processing of the second rotating mating part 223 and the mounting groove 110, reduces assembly difficulty, and lowers component manufacturing costs. At the same time, during assembly, the radial support provided by the damping ring 230 for the rotating shaft 220 within the mounting groove 110 can stably achieve the pre-positioning of the traction wheel and the housing 100, reducing the difficulty of subsequent fixed connection of the lever 300 and the traction wheel, and improving the endoscope production and assembly quality and efficiency.

[0024] In some embodiments, to improve the ability of the rotating shaft 220 to resist lateral displacement during directional bending and to enhance the structural stability between the lever 300, the traction wheel, and the housing 100, an outer conical surface 122 can be provided at the outer port of the rotating hole 120, such as... Figure 4 As shown; the lever 300 is provided with a mating surface 310, such as Figure 10 As shown, the mating surface 310 is a conical structure, and the mating surface 310 is correspondingly set with the outer conical surface 122. The mating surface 310 and the outer conical surface 122 are used to achieve the coaxial setting of the rotating shaft 220 and the rotating hole 120. During the pressing process of the lever 300, the mating surface 310 and the outer conical surface 122 are tightly fitted to form an additional radial positioning support, which further limits the lateral displacement tendency of the rotating shaft 220 when under force. In addition, during the assembly process, the structure also coordinates the mating between the transition conical surface and the inner conical surface 121, which not only enhances the coaxial stability of the rotating shaft 220 and the rotating hole 120, but also effectively disperses the local stress applied to the rotating shaft 220 when the lever 300 is operated, avoiding component wear or deformation due to stress concentration, and keeping the coaxiality stable for a long time.

[0025] In some embodiments, to enhance the structural stability between the rotating shaft 220 and the rotating hole 120, the housing 100 may further include a protrusion 130. The lever 300 abuts against the protrusion 130 of the housing 100 along the axial direction of the rotating shaft 220. The rotating hole 120 is disposed on the protrusion 130. The protrusion 130 provides additional structural support space for the rotating hole 120 and the lever 300, which can increase the contact area between the transition cone surface and the inner cone surface 121, disperse the force transmitted by the lever 300, improve the structural stability of the rotating shaft 220 under stress, avoid wobbling caused by insufficient structural rigidity due to insufficient wall thickness of the housing 100, and ensure that the rotating shaft 220 always remains coaxial with the rotating hole 120.

[0026] In some embodiments, to improve the ease of assembly of the endoscope handle, the endoscope handle may further include a fixing member 400. The fixing member 400 includes an abutment portion 410 and a rod portion 420. The abutment portion 410 is provided with a stop surface 411 that abuts against the lever 300. The rod portion 420 passes through the lever 300 and connects to the first rotating engagement portion 221. By using the fixing member 400 to connect and fix the traction wheel, lever 300 and housing 100 from the outside of the housing 100, the space obstruction of components such as the traction wheel located inside the housing 100 when fixing from the inside of the housing 100 can be avoided, thus improving the degree of freedom of assembly. At the same time, no additional positioning operation is required for the internal structure of the housing 100 during the assembly process. Assembly can be completed simply by passing through and fixing from the outside, which greatly simplifies the assembly process and reduces the difficulty of assembly operation.

[0027] In some embodiments, to reduce assembly difficulty, a through hole 320 can be provided on the connecting part of the lever 300. The outer end face of the first rotating fitting part 221 protrudes from the housing 100 and is located inside the through hole 320. Based on the cooperation between the first rotating fitting part 221 and the through hole 320, the lever 300 can be pre-positioned on the housing 100, which facilitates quick adjustment of the position of the lever 300 during assembly and can also prevent the lever 300 from shifting or falling off before fixing, thereby reducing the difficulty of assembly operations and improving assembly efficiency.

[0028] When the insertion part 500 is directionally bent by controlling the lever 300, different operators have different requirements for the rotational resistance of the lever 300. To improve the flexibility of directional bending control adaptation, in some embodiments, such as Figure 6 and Figure 8 As shown, a second preset gap L2 can be provided between the outer end face of the first rotating mating part 221 and the stop surface 411. During assembly or use, the second preset gap L2 can be adjusted by the fixing part 400 to change the tightness between the transition cone surface and the inner cone surface 121, as well as the tightness between the mating surface 310 and the outer cone surface 122. When the second preset gap L2 decreases, the tightness between the transition cone surface and the inner cone surface 121 increases, and the rotational resistance of the rotating shaft 220 increases accordingly. When the second preset gap L2 increases, the tightness between the transition cone surface and the inner cone surface 121 decreases, and the rotational resistance of the rotating shaft 220 decreases accordingly. This adapts to the operating needs of different operators and also facilitates the adjustment of rotational resistance in the production process according to the actual assembly situation, reducing the resistance non-conformity rate caused by part tolerances in mass production and improving product yield. The change in the tightness between the mating surface 310 and the outer cone surface 122 is similar to the change in the tightness between the transition cone surface and the inner cone surface 121.

[0029] In some embodiments, the connecting part and the first rotating mating part 221 are detachably fixed by snap-fit, threaded connection, or pin connection, which facilitates the disassembly and processing of parts during production, and also facilitates the individual replacement of the damaged lever 300 or traction wheel during subsequent maintenance, reducing maintenance costs. Figure 6 and Figure 8 As shown, in this embodiment, the rod portion 420 is preferably threadedly connected to the first rotating engagement portion 221, so as to facilitate the adjustment of the second preset gap L2 between the outer end face of the first rotating engagement portion 221 and the stop surface 411. Based on this structural design, the size of the second preset gap L2 can be directly adjusted by controlling the fixing member 400, thereby adjusting the rotational resistance of the lever 300 when it is directionally bent, and improving the flexibility and convenience of using the endoscope.

[0030] In some embodiments, to achieve a fixed connection between the lever 300, the traction wheel, and the housing 100, a groove can be provided on the lever 300, and the abutment portion 410 is provided in the groove. The abutment surface 411 and the inner wall of the groove abut against each other to achieve the abutment between the fixing member 400 and the lever 300, making the overall structure of the fixing member 400 more compact after installation and reducing the space volume of the handle. In some examples, the groove can also be provided to form a circumferential limit on the abutment portion 410, preventing the fixing member 400 from loosening during use and improving the overall stability of the connection structure.

[0031] In some embodiments, to reduce the resistance when the rotating shaft 220 rotates circumferentially within the rotating hole 120, the diameter of the first rotating mating part 221 can be set to be smaller than the diameters of the through hole 320 and the rotating hole 120, thereby reducing the frictional resistance when the lever 300 is operated and improving the smoothness of operation; at the same time, this dimensional relationship can also provide sufficient radial movement space for the first rotating mating part 221 during assembly, avoiding jamming due to machining errors or assembly deviations, ensuring that the traction wheel runs smoothly during rotation, and further optimizing the operating feel and reliability of the endoscope handle.

[0032] In this embodiment, the damping ring 230 is a prior art material, which can be a rubber ring, a silicone ring, or an elastic plastic ring. The appropriate material can be selected according to the usage scenario, load requirements, and cost budget of the endoscope handle. No specific limitation is made here. All of the above elastic materials can meet the functional requirements of this application for providing radial support and buffer limit for the damping ring.

[0033] The endoscope provided in this application embodiment can be a nephroscope, or a bronchoscope, suction endoscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, oral endoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. This application embodiment does not specifically limit the type of endoscope.

[0034] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0035] The above description is merely a specific embodiment of this application, but the scope of protection of this application 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 this application should be included within the scope of protection of this application.

Claims

1. An endoscope handle, characterized in that, include: The housing has a rotating hole, the inner port of the rotating hole has an inner conical surface, and the inner wall of the housing has a mounting groove. The traction wheel includes a rotating shaft and a rotating disk. The rotating disk has a mounting position for fixing a traction rope. The rotating shaft includes a first rotating mating part, a transition part, and a second rotating mating part arranged sequentially along the axial direction. The first rotating mating part passes through a rotating hole, and the second rotating mating part is located close to the traction wheel and is located in a mounting groove. A damping ring is provided between the second rotating mating part and the inner wall of the mounting groove. The transition part has a transition conical surface, which corresponds to the inner conical surface. Based on the mating of the transition conical surface and the inner conical surface, as well as the mating between the damping ring, the second rotating mating part, and the inner wall of the mounting groove, the coaxial arrangement of the rotating shaft and the rotating hole is achieved. A lever, the lever including a connecting part, the connecting part being detachably connected to a first rotating engagement part.

2. An endoscope handle according to claim 1, characterized in that, At least one of the second rotating mating part and the inner wall of the mounting groove is provided with an annular groove, the annular groove being used to install a damping ring; And / or, there is a first preset gap between the second rotating mating part and the inner wall of the mounting groove; And / or, under normal conditions, the damping ring is in a radially compressed state.

3. An endoscope handle according to claim 1, characterized in that, The outer port of the rotating hole is provided with an outer conical surface, and the lever is provided with a mating surface. The mating surface is a conical structure and is provided in correspondence with the outer conical surface. The mating surface and the outer conical surface are used to achieve the coaxial setting of the rotating shaft and the rotating hole.

4. An endoscope handle according to claim 1, characterized in that, The lever abuts against the housing along the axial direction of the rotation axis.

5. An endoscope handle according to claim 1, characterized in that, The housing also includes a protrusion, the rotating hole is disposed on the protrusion, and / or the lever abuts against the protrusion of the housing along the axial direction of the rotating shaft.

6. An endoscope handle according to any one of claims 1 to 5, characterized in that, The endoscope handle also includes a fixing member, which includes an abutting part and a rod part. The abutting part is provided with a stop surface that abuts against the lever, and the rod part passes through the lever and connects to the first rotating engagement part.

7. An endoscope handle according to claim 6, characterized in that, The lever connection part is provided with a through hole, the outer end face of the first rotating engagement part protrudes from the housing, and the outer end face of the first rotating engagement part is located inside the through hole.

8. An endoscope handle according to claim 7, characterized in that, There is a second preset gap between the outer end face of the first rotating mating part and the stop surface; And / or, the lever is provided with a groove, and the abutting part is provided in the groove. The abutting surface and the inner wall of the groove abut against each other to achieve the abutting of the fixing part and the lever.

9. An endoscope handle according to claim 6, characterized in that, The rod portion is threadedly connected to the first rotating mating portion; And / or, the diameter of the first rotating mating part is smaller than the diameter of the through hole and the rotating hole.

10. An endoscope, characterized in that, It includes an insertion part and an endoscope handle as described in any one of claims 1 to 9, wherein the proximal end of the insertion part is connected to the distal end of the handle.

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