A traction rope tension adjustment mechanism, endoscope handle and endoscope

Abstract

The present invention provides a traction rope tension adjustment mechanism, an endoscope handle and an endoscope, and belongs to the technical field of endoscopes. The adjustment mechanism includes a handle shell, a sleeve, an operating structure and a fixed structure; the sleeve is used to be sleeved outside the traction rope; the operating structure is fixedly connected to the sleeve, and the operating structure has an abutment portion, the abutment portion is in contact and cooperated with the handle shell, and the operating structure can move relative to the handle shell along the axial direction of the traction rope under the drive of an external force; the fixed structure is detachably connected to the handle shell to press and fix the abutment portion between the fixed structure and the handle shell. The present application controls the movement of the sleeve by fixedly connecting the operating structure to the sleeve and controlling the movable distance of the operating structure to adjust the length of the traction rope, thereby adjusting the tension of the traction rope. The operation is simple and convenient, and the adjustment accuracy of the movable distance of the operating structure is high, which can improve the adjustment accuracy of the traction rope tension.

Description

Technical Field

[0001] The invention belongs to the technical field of endoscopes, and in particular relates to a traction rope tension adjustment mechanism, an endoscope handle and an endoscope. Background Art

[0002] As a medical device, the insertion part of the endoscope can enter the human body to take images of the lesions and provide doctors with sufficient diagnostic information to treat the disease.

[0003] The distal end of the insertion part is the active bending section, and a traction wheel is provided in the endoscope handle, and a traction rope is connected between the traction wheel and the active bending section. Due to the irregularity of the human body cavity, when the active bending section enters different human cavities, it is necessary to rotate the traction wheel, thereby pulling the traction rope to control the bending of the active bending section, and adaptively adjust the bending angle of the active bending section to adapt to different cavities.

[0004] The endoscope handle is also provided with a tension adjustment mechanism for adjusting the tension of the traction rope to ensure the operational flexibility and accuracy of the bending angle of the active bending section. However, the existing tension adjustment mechanism has poor tension adjustment accuracy for the traction rope. Summary of the invention

[0005] The purpose of this application is to provide a traction rope tension adjustment mechanism, an endoscope handle and an endoscope to solve the above-mentioned technical problems existing in the prior art.

[0006] This application is implemented as follows:

[0007] In the first aspect, an embodiment of the present application provides a traction rope tension adjustment mechanism, which is applied to an endoscope, and includes a handle shell, a sleeve, an operating structure and a fixed structure; the sleeve is used to be sleeved on the outside of the traction rope; the operating structure is fixedly connected to the sleeve, and the operating structure has an abutment portion, which is in contact and cooperates with the handle shell, and the operating structure can move relative to the handle shell along the axial direction of the traction rope under the drive of an external force; the fixed structure is detachably connected to the handle shell to press and fix the abutment portion between the fixed structure and the handle shell.

[0008] In a second aspect, an embodiment of the present application provides an endoscope handle, comprising the traction rope tension adjustment mechanism provided in the embodiment of the first aspect.

[0009] In a third aspect, an endoscope provided in an embodiment of the present application includes the endoscope handle provided in the embodiment of the second aspect.

[0010] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0011] In the present application, the operating structure is fixedly connected to the sleeve, and the movement of the sleeve is controlled by controlling the movement of the operating structure. Since both ends of the traction rope are fixed to the endoscope and the length of the traction rope in the sleeve remains unchanged, the overall length of the traction rope can be adjusted by controlling the position of the sleeve, thereby adjusting the tension of the traction rope; the present application adjusts the length of the traction rope by controlling the movable distance of the operating structure, thereby adjusting the tension of the traction rope, and the operation is simple and convenient, and the adjustment accuracy of the movable distance of the operating structure is high, which can improve the adjustment accuracy of the traction rope tension; the present application directly fixes the relative position of the operating structure and the handle shell by pressing and fixing the abutting part of the operating structure between the fixed structure and the handle shell, and the fixing operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. 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 creative work.

[0013] Figure 1 The overall structure of the tension adjustment mechanism provided in some embodiments of the present application is shown in FIG. Figure 1 ;

[0014] Figure 2 This application is about Figure 1 Detailed view of point A;

[0015] Figure 3 The overall structure of the tension adjustment mechanism provided in some embodiments of the present application is shown in FIG. Figure 2 ;

[0016] Figure 4 This application is about Figure 3 Detail of point B;

[0017] Figure 5 The overall structure of the tension adjustment mechanism provided in some embodiments of the present application is shown in FIG. Figure 3 ;

[0018] Figure 6 This application is about Figure 5 Detailed view of point C;

[0019] Figure 7 is a cross-sectional view of a tension adjustment mechanism provided in some embodiments of the present application Figure 1 ;

[0020] Figure 8 This application is about Figure 7 Detailed view of point D;

[0021] Fig. 9 is a cross-sectional view of a handle shell provided in some embodiments of the present application Figure 1 ;

[0022] Fig.10 This application is about Fig. 9 Detailed view of point E;

[0023] Fig.11 is a cross-sectional view of a tension adjustment mechanism provided in some embodiments of the present application Figure 2 ;

[0024] Fig.12 This application is about Fig.11 Detail of F;

[0025] Fig.13 is a cross-sectional view of a handle shell provided in some embodiments of the present application Figure 2 ;

[0026] Fig.14 This application is about Fig.13 Detailed view of G;

[0027] Fig.15 This is a partial structural diagram of the tension adjustment mechanism provided in some embodiments of the present application. Figure 1 ;

[0028] Fig.16 This is a partial structural diagram of the tension adjustment mechanism provided in some embodiments of the present application. Figure 2 ;

[0029] Fig.17 is a schematic diagram of a positioning structure provided in some embodiments of the present application;

[0030] Fig.18 This is a schematic diagram of a fixed structure provided in some embodiments of the present application. Figure 1 ;

[0031] Fig.19 This is a schematic diagram of a fixed structure provided in some embodiments of the present application. Figure 2 ;

[0032] Fig. 20 The overall structure of the tension adjustment mechanism provided in some embodiments of the present application is shown in FIG. Figure 4 .

[0033] In the figure: 100-handle shell, 110-card slot, 120-card-connecting through hole, 200-sleeve, 300-operating structure, 310-abutment part, 400-fixing structure, 410-fixed body, 420-spring, 421-limiting protrusion, 430-pressing protrusion, 500-through hole group, 510-first through hole, 520-second through hole, 530-third through hole, 600-positioning structure, 610-movable channel, 620-movable opening, 630-support foot, 700-sliding member, 800-sheath, 900-traction rope. DETAILED DESCRIPTION

[0034] The following description provides many different embodiments or examples for implementing different features of the present invention. The components and arrangements described in the following specific examples are only used to simplify the present invention and are only used as examples, not to limit the present invention.

[0035] It should be noted that, in each embodiment of the present application, "proximal end" and "distal end" refer to the position of the endoscope and its accessories 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".

[0036] In existing endoscopes, the tension of the traction rope is easily too large or too small, and it is difficult to adjust to an appropriate size. The inventors have found that in the existing endoscope structure, the tension of the traction rope is generally adjusted by fixing a clamping structure outside the sleeve, and then setting multiple clamping slots in the handle, and installing the clamping structure in different clamping slots. The clamping structure can only adjust the tension of the traction rope by changing the position between multiple clamping slots, and the adjustment accuracy is poor.

[0037] In view of this, an embodiment of the present application provides a traction rope tension adjustment mechanism, which is applied to an endoscope and can improve the adjustment accuracy of the tension of the traction rope 900.

[0038] The tension adjustment mechanism of the traction rope 900 provided in the embodiment of the present application includes a handle shell 100, a sleeve 200, an operating structure 300 and a fixing structure 400. Figure 1 and Figure 3 As shown, the handle shell 100 is the shell of the handle of the endoscope, and its interior is hollow for assembling endoscope accessories such as traction wheels.

[0039] The casing 200 is a tubular structure, refer to Figure 2 , Figures 7 to 10 As shown, the sleeve 200 is used to be sleeved onto the outside of the traction rope 900 to protect the traction rope 900 and prevent the traction rope 900 from rubbing against other devices during the process of pulling the traction rope 900, thereby preventing the traction rope 900 from being damaged in the structure.

[0040] It should be explained that the sleeve 200 is a tubular structure that is difficult to be axially compressed and difficult to be stretched in the axial direction. Specifically, it can be a spring tube, a braided tube, or a full-circle tube, etc., and the material can be metal or plastic. Since the sleeve 200 is difficult to be axially compressed or stretched, the sleeve 200 is sleeved on the traction rope 900, and the length of the traction rope 900 in the sleeve 200 is unchanged. Even if the sleeve 200 is bent and deformed under the action of external force, the axial length of the sleeve 200 is almost unchanged, and the length of the traction rope 900 in the sleeve 200 will not change.

[0041] refer to Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the operating structure 300 is fixedly connected to the sleeve 200 and is used to control the movement of the sleeve 200. The operating structure 300 can move relative to the handle housing 100 along the axial direction of the traction rope 900 under the drive of an external force. The operating structure 300 is fixed to the sleeve 200, and the movement of the sleeve 200 is controlled by controlling the movement of the operating structure 300.

[0042] In the endoscope, both ends of the traction rope 900 are fixed, wherein the distal end of the traction rope 900 is fixed to the distal end of the endoscope insertion part, and the proximal end of the traction rope 900 is fixed to the traction wheel in the handle shell 100. The sleeve 200 is sleeved outside the traction rope 900. When the operator controls the operating structure 300 to drive the sleeve 200 to move toward the distal end, when the distal end of the sleeve 200 is pressed against the insertion part, the distal end of the sleeve 200 can no longer move. If the operating structure 300 continues to move toward the distal end of the sleeve 200, the sleeve 200 will bend.

[0043] Since the positions of the proximal and distal ends of the traction rope 900 are fixed, and the length of the traction rope 900 in the sleeve 200 is also unchanged, even if the sleeve 200 is bent, the length of the traction rope 900 in the sleeve 200 will not change. However, during the bending of the sleeve 200, the proximal end of the sleeve 200 will move toward its distal end along with the operating structure 300, and the distance between the proximal end of the sleeve 200 and the proximal end of the traction rope 900 will gradually increase. However, since the length of the traction rope 900 in the sleeve 200 will not change, and the length of the traction rope 900 between the proximal end of the sleeve 200 and the proximal end of the traction rope 900 will gradually stretch, this will cause the overall length of the traction rope 900 to increase, thereby increasing the tension of the traction rope 900.

[0044] When it is necessary to lower the tension of the traction rope 900, the operating structure 300 is moved toward the proximal end of the traction rope 900 to reduce the bending degree of the sleeve 200, and the proximal end of the sleeve 200 is moved closer to the proximal end of the traction rope 900 to shorten the length of the traction rope 900 between the proximal ends of the sleeve 200 and the proximal ends of the traction rope 900, thereby lowering the tension of the traction rope 900.

[0045] In the embodiment provided in the present application, the tension of the traction rope 900 is directly controlled by controlling the movement of the operating structure 300. Since the movement of the operating structure 300 is approximately steplessly adjustable, the tension adjustment of the traction rope 900 is also approximately steplessly adjustable. Compared with the prior art, the tension adjustment of the traction rope 900 has higher accuracy, which is more conducive to adjusting the traction rope 900 to a preset tension size and more conducive to the use of the endoscope.

[0046] When adjusting the tension of the traction rope 900, the tension of the traction rope 900 can be adjusted directly by controlling the movement of the operating structure 300. The operation is simple and convenient. In addition, the operator can judge the tension of the traction rope 900 by the control feel of the operating structure 300, and can adjust the traction rope 900 to the preset tension more quickly and conveniently.

[0047] The operating structure 300 also includes an abutment portion 310, which is a part of the operating structure 300. The abutment portion 310 contacts and cooperates with the handle shell 100. When the operating structure 300 moves relative to the handle shell 100, the abutment portion 310 is always in contact with the handle shell 100. The tension adjustment mechanism provided in the embodiment of the present application also includes a fixing structure 400, referring to Figures 1 to 4 As shown, the fixing structure 400 is detachably connected to the handle shell 100 to press and fix the abutting portion 310 between the fixing structure 400 and the handle shell 100. The fixing structure 400 is directly connected to the handle shell 100, and the position of the abutting portion 310 is fixed by squeezing the abutting portion 310 and increasing the friction between the abutting portion 310 and the handle shell 100 and the fixing structure 400.

[0048] Since the abutment portion 310 is always in contact with the handle shell 100, when the fixing structure 400 is used to squeeze and fix the abutment portion 310, the position of the abutment portion 310 relative to the handle shell 100 will not change. After the operator moves the operating structure 300 to a suitable position, the position of the abutment portion 310 and the position of the operating structure 300 will not change during the process of fixing the abutment portion 310 using the fixing structure 400, and the position of the sleeve 200 will not change, ensuring that the position of the operating structure 300 will not change relative to the handle shell 100 during the process of moving the operating structure 300 to a suitable position and fixing the operating structure 300, and the tension of the traction rope 900 can be maintained stable, thereby improving the tension adjustment accuracy of the traction rope 900. It is ensured that the tension of the traction rope 900 will not change in both cases when the tension of the traction rope 900 is adjusted to a preset value by the operating structure 300 and when the operating structure 300 is subsequently fixed to the handle shell 100 by the fixing structure 400.

[0049] In some prior arts, after the traction rope 900 is adjusted to a suitable tension, the traction rope 900 needs to be restricted to the corresponding installation position. However, in the process of restricting the traction rope 900, the overall length of the traction rope 900 will also change, resulting in the final tension of the traction rope 900 not being the preset tension. In the embodiment provided by the present application, in the process of fixing the operating structure 300, the tension of the traction rope 900 does not change.

[0050] It should be explained that the abutment portion 310 can be a clear part of the operating structure 300, which is always in contact with the handle shell 100. Even if the operating structure 300 moves relative to the handle shell 100, the abutment portion 310 is always in stable contact with the handle shell 100. The abutment portion 310 can also be an uncertain part of the operating structure 300. The abutment portion 310 is directly set as a part of the operating structure 300 that is always in contact with the handle shell 100. No matter how the operating structure 300 moves, there is always a part of the operating structure 300 that is in contact with the handle shell 100. This part is the abutment portion 310 referred to in some embodiments of the present application.

[0051] The operator can install the fixing structure 400 on the handle shell 100 or remove it from the handle shell 100 according to actual needs. When the operating structure 300 needs to be moved, the fixing structure 400 is removed from the handle shell 100, and the operator can control the operating structure 300 to move and adjust the tension of the traction rope 900. When the operating structure 300 does not need to be moved, the fixing structure 400 is installed on the handle shell 100, and the abutting portion 310 of the operating structure 300 is pressed and fixed to the handle shell 100, and the relative position of the abutting portion 310 and the handle shell 100 is fixed, thereby fixing the relative position of the operating portion and the handle shell 100, so that the tension of the traction rope 900 can be kept stable.

[0052] In some preferred embodiments, the handle housing 100 is provided with a through hole group 500. Fig. 9 and Fig.10 As shown. The end of the operating structure 300 away from the sleeve 200 passes through the through hole group 500 and extends to the outside of the handle shell 100. The end of the operating structure 300 away from the sleeve 200 is located outside the handle shell 100. Compared with the inside of the handle shell 100, there is enough space outside the handle shell 100, which is convenient for the operator to hold the operating structure 300 to control the movement of the operating structure 300. And, referring to Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the length of the operating structure 300 outside the handle shell 100 is easier to observe, which can assist the operator in determining whether the operating structure 300 has moved into place, and further improve the adjustment accuracy of the tension of the traction rope 900. Figure 3 and Figure 4 As shown, a marking device may be provided outside the handle housing 100 to facilitate determination of the moving distance of the operating structure 300 .

[0053] In some embodiments, the outer wall of the handle shell 100 is further provided with a slot 110, Figure 5 and Figure 6 As shown, the slot 110 is directly opened on the outer wall of the handle housing 100. Fig. 9 and Fig.10As shown, the abutment portion 310 is located in the card slot 110. The fixing structure 400 is snap-fitted and fixed into the card slot 110. The card slot 110 is provided on the outer wall of the handle shell 100, and the fixing structure 400 can be directly installed to the card slot 110 or removed from the card slot 110 outside the handle shell 100. On the one hand, the external operating space of the handle shell 100 is large, which is more conducive to controlling the fixing structure 400; on the other hand, when adjusting the position of the fixing structure 400, there is no need to open the handle shell 100, and even in the later use of the endoscope, the fixing structure 400 can be removed, thereby controlling the movement of the operating structure 300, adjusting the tension of the traction rope 900, reducing the use restrictions of the tension adjustment mechanism of the traction rope 900, and its use is more flexible. Since the tension of the traction rope 900 can be adjusted during use, it is not necessary to adjust the tension of the traction rope 900 during the shipment of the endoscope. In this way, the traction rope 900 can avoid pulling the insertion part when the endoscope is not in use, thereby preventing the snake joints of the insertion part from being deformed due to long-term tension.

[0054] The part of the operating structure 300 located in the slot 110 is the abutment portion 310. When the fixing structure 400 is installed in the slot 110, the fixing structure 400 can squeeze and fix the abutment portion 310 to the handle shell 100 to fix the position of the operating structure 300. In a specific implementation, the abutment portion 310 contacts the bottom of the slot 110, and the fixing structure 400 extends into the slot 110 through the opening of the slot 110 and is clamped in the slot 110, thereby squeezing and fixing the abutment portion 310.

[0055] In some embodiments, the operating structure 300 can be a structure with relatively high rigidity, and its overall structure cannot be bent. Correspondingly, the structure of the handle shell 100 needs to be adaptively changed according to the operating structure 300 so that the operating structure 300 can move axially along the traction rope 900 relative to the handle shell 100. At the same time, it is also necessary to ensure that the fixing structure 400 can always squeeze and fix the abutment portion 310 to the handle shell 100.

[0056] In other embodiments, the operating structure 300 may be a structure with low rigidity, which may be bent under the action of an external force. The operating structure 300 may bend to adapt to the position of the through hole group 500, as shown in FIG. Figure 7 and Figure 8 The through hole group 500 includes a first through hole 510 and a second through hole 520 connected to the card slot 110. Fig. 9 and Fig.10 The operating structure 300 is sequentially disposed through the first through hole 510, the card slot 110 and the second through hole 520. The portion of the operating structure 300 located in the card slot 110 is the abutment portion 310. Figure 8 As shown, the abutting portion 310 abuts against the bottom of the slot 110 .

[0057] The first through hole 510 and the second through hole 520 disposed on both sides of the card slot 110 can limit the operating structure 300, so that the part of the operating structure 300 located in the card slot 110 can always be stably fitted to the bottom of the card slot 110, which is convenient for the fixing structure 400 to squeeze and fix. The operating structure 300 passes through the first through hole 510 and enters the card slot 110, and then extends into the second through hole 520. The positions of the first through hole 510 and the second through hole 520 are determined. Therefore, the position of the part of the operating structure 300 located between the first through hole 510 and the second through hole 520, that is, the position of the abutment portion 310 is also determined. The card slot 110 is set between the first through hole 510 and the second through hole 520, so that the abutment portion 310 can always be fitted to the bottom of the card slot 110.

[0058] The operating structure 300 can be bent. In the process of controlling the operation structure 300 to move, the operating structure 300 moves in the first through hole 510, the slot 110 and the second through hole 520. Due to the restrictions of the inner walls of the first through hole 510 and the second through hole 520, the operating structure 300 continuously bends and deforms to fit to the bottom of the slot 110.

[0059] Further preferably, reference Fig.10 As shown, the through hole group 500 also includes a third through hole 530, the first through hole 510 connects the interior of the handle shell 100 and the slot 110, the second through hole 520 connects the slot 110 and the interior of the handle shell 100, and the third through hole 530 connects the interior of the handle shell 100 and the exterior of the handle shell 100, and the operating structure 300 is sequentially penetrated through the first through hole 510, the slot 110, the second through hole 520 and the third through hole 530, and the end of the operating structure 300 can extend to the outside of the handle shell 100 through the third through hole 530.

[0060] The first through hole 510 and the second through hole 520 on both sides of the slot 110 are connected to the slot 110 and the inner wall of the handle shell 100, so that the forces at both ends of the abutment part 310 located in the slot 110 are directed toward the inside of the handle shell 100, which is beneficial for the abutment part 310 to stably contact with the bottom of the slot 110. Even if the fixing structure 400 is used to squeeze and fix the abutment part 310 later, the position of the abutment part 310 will not move or will hardly move, thereby ensuring that the tension of the traction rope 900 will not change during the control process of fixing the abutment part 310.

[0061] In some preferred embodiments, reference Fig.10As shown, in order to ensure that the operating structure 300 will not be damaged when moving back and forth in the first through hole 510, the slot 110, the second through hole 520 and the third through hole 530, an arc surface is provided at the junction of the first through hole 510 and the slot 110, and an arc surface is also provided at the junction of the slot 110 and the second through hole 520. An arc surface is also provided at the junction of the second through hole 520 and the inner wall of the handle shell 100, and at the junction of the inner wall of the handle shell 100 and the third through hole 530, so as to reduce the friction resistance encountered by the operating structure 300 during movement, reduce the degree of bending deformation of the operating structure 300, and further avoid damage to the operating structure 300.

[0062] In some specific implementations, the operating structure 300 may be made of a steel wire rope, which has a high structural strength, is not easy to break, can withstand a large tensile force, and can also bend under the action of an external force.

[0063] The fixing structure 400 needs to be stably fixed in the card slot 110 to stably fix the abutting portion 310. In some embodiments, the fixing structure 400 is engaged with the card slot 110, and the fixing structure 400 is clamped in the card slot 110. In other embodiments, the fixing structure 400 includes a fixing body 410 and a spring 420, Fig.11 , Fig.12 , Fig.18 and Fig.19 As shown, the spring piece 420 is fixed to the fixed body 410 , and the spring piece 420 can be deformed under the action of external force to approach the fixed body 410 , and a limiting protrusion 421 is provided on the surface of the spring piece 420 away from the fixed body 410 .

[0064] refer to Fig.13 and Fig.14 As shown, the handle shell 100 is further provided with a card-connecting through hole 120, which passes through the bottom of the card slot 110 and connects the card slot 110 and the inside of the handle shell 100. The spring piece 420 is provided in the card-connecting through hole 120, a part of the spring piece 420 is located in the card-connecting through hole 120, and another part of the spring piece 420 passes through the card-connecting through hole 120 and extends into the inside of the handle shell 100, and the limiting protrusion 421 provided on the spring piece 420 is located inside the handle shell 100. The limiting protrusion 421 and the handle shell 100 are limitedly matched along the first direction, and the first direction is the disassembly direction of the fixing structure 400 and the card slot 110.

[0065] The limiting protrusion 421 is in a limiting cooperation with the handle shell 100 to prevent the fixing structure 400 from being separated from the handle shell 100, thereby stabilizing the position of the fixing structure 400. When the fixing structure 400 needs to be removed from the handle shell 100, the spring sheet 420 is moved so that the spring sheet 420 is close to the fixing body 410, thereby reducing the overall size of the fixing structure 400, so that the limiting protrusion 421 is separated from the handle shell 100, and the fixing structure 400 as a whole can be taken out from the slot 110.

[0066] The limiting cooperation between the limiting protrusion 421 and the handle shell 100 improves the connection stability between the fixing structure 400 and the handle shell 100, and avoids the fixing structure 400 from accidentally detaching. The overall size of the fixing structure 400 is adjusted by controlling the deformation of the spring sheet 420, so that the fixing structure 400 can be smoothly inserted into or removed from the slot 110. In some embodiments, refer to Fig.18 and Fig.19 As shown, one end of the spring piece 420 is fixed to the fixed body 410 , and the other end is a free end and is provided with a limiting protrusion 421 .

[0067] Preferably, in order to facilitate the operator to operate the fixing structure 400, some fixing structures 400 further include a pressing protrusion 430, and the pressing protrusion 430 is fixed to the spring piece 420. Fig.19 As shown, when the fixing structure 400 is installed in the card slot 110, the pressing protrusion 430 needs to be exposed outside the card slot 110. By pressing the pressing protrusion 430, the spring piece 420 can be pushed toward the fixing body 410, so that the fixing structure 400 can be smoothly removed from the card slot 110.

[0068] Generally, one fixing structure 400 is provided with one spring piece 420 and one limiting protrusion 421, so that the fixing structure 400 as a whole is not too complicated and is easier to assemble. In other embodiments, the fixing structure 400 may also be provided with two spring pieces 420, which are respectively located on both sides of the fixing body 410, so as to improve the connection stability between the fixing structure 400 and the handle shell 100.

[0069] In some embodiments of the present application, the adjustment mechanism further includes a positioning structure 600, referring to Figure 1 and Figure 2 As shown, the positioning structure 600 is fixed inside the handle housing 100. Fig.17 As shown, the positioning structure 600 has a movable channel 610 . The sleeve 200 is movably arranged in the movable channel 610 , and the part of the sleeve 200 located in the movable channel 610 is coaxially arranged with the movable channel 610 , and the connection part between the operating structure 300 and the sleeve 200 moves in the movable channel 610 .

[0070] The positioning member can support and limit the position of the sleeve 200, so that the sleeve 200 can only move in a preset direction, and prevent the sleeve 200 from moving randomly in the handle to affect the adjustment of the tension of the traction rope 900. At the same time, the connection part of the sleeve 200 and the operating structure 300 is located in the movable channel 610, and the area where the sleeve 200 is bent and deformed is located at the far end of the movable channel 610, while the sleeve 200 in the movable channel 610 and at its proximal end will not bend and deform. Therefore, the extension path of the traction rope 900 at the proximal end of the movable channel 610 is stable and will not change due to the movement of the sleeve 200, which is more conducive to the adjustment of the tension of the traction rope 900.

[0071] In some preferred embodiments, reference Fig.17 As shown, the positioning structure 600 includes an active opening 620 communicating with the active channel 610. The active opening 620 is mainly used to provide an active space for the operating structure 300 so that the operating structure 300 can smoothly pull the sleeve 200 to move. Fig.15 As shown, the movable opening 620 is located on the side of the movable channel 610 close to the fixed structure 400, and the operating structure 300 can directly extend toward the fixed structure 400 after passing through the movable opening 620, so that it is convenient for the fixed structure 400 to squeeze and fix it. In addition, the length direction of the movable opening 620 is parallel to the axial direction of the movable channel 610, and the operating structure 300 passes through the movable opening 620, and the operating structure 300 can move along the length direction of the movable opening 620 under the action of external force.

[0072] In some embodiments, reference Fig.15 and Fig.16 As shown, a sliding member 700 is usually fixed outside the sleeve 200, and the sliding member 700 is slidably arranged in the movable channel 610, and the operating structure 300 is connected to the sliding member 700. The radial dimension of the sliding member 700 is large, and it is easier to connect with the operating structure 300, and the sliding member 700 is sleeved outside the sleeve 200, which can prevent the part of the sleeve 200 from being deformed, and ensure that the sleeve 200 and the movable channel 610 slide smoothly.

[0073] The positioning structure 600 is usually also provided with a support leg 630, see Fig.15 As shown, the legs 630 are located on both sides of the movable opening 620, and the legs 630 are fixed to the handle shell 100. For endoscopes of different specifications, the distance between the traction rope 900 and the handle shell 100 is different, and the legs 630 of different heights can be set according to the distance to ensure the stability of the height position of the traction rope 900.

[0074] When one end of the operating structure 300 extends out of the handle housing 100, a sheath 800 may be provided. Fig. 20As shown, the sheath 800 is used to be sleeved outside the handle shell 100. The sheath 800 can cover the operating structure 300 to prevent the operating structure 300 protruding from the outer wall of the handle shell 100 from affecting the doctor's hand feeling. When the operating structure 300 needs to be operated, the sheath 800 can be removed. An avoidance groove can be set inside the sheath 800 to avoid the operating structure 300 and the fixed structure 400.

[0075] An embodiment of the present application also provides an endoscope handle, comprising a tension adjustment mechanism of the traction rope 900 provided in any of the above embodiments.

[0076] An embodiment of the present application also provides an endoscope, comprising an endoscope handle provided by any of the above embodiments.

[0077] The endoscope provided in the embodiments of the present application may be a nephroscope, or a suction endoscope, a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal endoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A traction rope tension adjustment mechanism, applied to an endoscope, characterized in that: include: Handle shell (100); A sleeve (200), the sleeve (200) being used to be sleeved onto the outside of the traction rope (900); an operating structure (300), the operating structure (300) being fixedly connected to the sleeve (200), the operating structure (300) having an abutment portion (310), the abutment portion (310) being in contact with and mating with the handle shell (100), and the operating structure (300) being able to move relative to the handle shell (100) along the axial direction of the traction rope (900) under the drive of an external force; a fixing structure (400), the fixing structure (400) being detachably connected to the handle shell (100) so as to press and fix the abutting portion (310) between the fixing structure (400) and the handle shell (100); The handle shell (100) is provided with a through hole group (500), and one end of the operating structure (300) away from the sleeve (200) passes through the through hole group (500) and protrudes out of the handle shell (100).

2. A traction rope tension adjustment mechanism according to claim 1, characterized in that: The outer wall of the handle shell (100) is provided with a slot (110), the abutment portion (310) is located in the slot (110), and the fixing structure (400) is fixedly connected to the slot (110).

3. A traction rope tension adjustment mechanism according to claim 2, characterized in that: The operating structure (300) is configured to be able to bend under the action of external force; The through hole group (500) comprises a first through hole (510) and a second through hole (520) which are in communication with the card slot (110); the operating structure (300) is sequentially arranged through the first through hole (510), the card slot (110) and the second through hole (520); the portion of the operating structure (300) located in the card slot (110) is the abutment portion (310); and the abutment portion (310) is pressed against the bottom of the card slot (110).

4. A traction rope tension adjustment mechanism according to claim 3, characterized in that: The through hole group (500) further comprises a third through hole (530), The first through hole (510) is connected to the interior of the handle shell (100) and the card slot (110), the second through hole (520) is connected to the card slot (110) and the interior of the handle shell (100), and the third through hole (530) is connected to the interior of the handle shell (100) and the exterior of the handle shell (100), and the operating structure (300) is sequentially penetrated through the first through hole (510), the card slot (110), the second through hole (520) and the third through hole (530).

5. A traction rope tension adjustment mechanism according to claim 2, characterized in that: The fixing structure (400) comprises a fixing body (410) and a spring sheet (420), wherein the spring sheet (420) is fixed to the fixing body (410), the spring sheet (420) can be deformed under the action of an external force to approach the fixing body (410), and a limiting protrusion (421) is provided on a surface of the spring sheet (420) facing away from the fixing body (410); The handle shell (100) is further provided with a card-connecting through hole (120), the card-connecting through hole (120) passing through the bottom of the card slot (110) and connecting the card slot (110) and the interior of the handle shell (100), the spring sheet (420) passing through the card-connecting through hole (120), and the limiting protrusion (421) being located inside the handle shell (100), the limiting protrusion (421) being limitedly matched with the handle shell (100) along a first direction, the first direction being a disassembly direction of the fixing structure (400) and the card slot (110).

6. A traction rope tension adjustment mechanism according to claim 1, characterized in that: The adjustment mechanism further comprises a positioning structure (600), wherein the positioning structure (600) is fixed inside the handle shell (100), the positioning structure (600) has a movable channel (610), the sleeve (200) is movably arranged in the movable channel (610), and the portion of the sleeve (200) located in the movable channel (610) is coaxially arranged with the movable channel (610), and the connection portion between the operating structure (300) and the sleeve (200) moves in the movable channel (610).

7. A traction rope tension adjustment mechanism according to claim 6, characterized in that: The positioning structure (600) comprises a movable opening (620) connected to the movable channel (610); the movable opening (620) is located on a side of the movable channel (610) close to the fixed structure (400); the length direction of the movable opening (620) is parallel to the axial direction of the movable channel (610); the operating structure (300) passes through the movable opening (620) and can move along the length direction of the movable opening (620) under the action of an external force.

8. An endoscope handle, characterized in that: It comprises the traction rope tension adjustment mechanism as described in any one of claims 1-7.

9. An endoscope, characterized in that: Includes the endoscope handle as described in claim 8.

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