Handle and endoscope

Abstract

The present application discloses a handle and an endoscope, and relates to the technical field of medical devices. The handle is applied to an endoscope, and the handle comprises a first traction rope, a second traction rope, a traction wheel, a pressure piece and a stopper, wherein: the first traction rope and the second traction rope are relatively sleeved on the traction wheel, the stopper is arranged between the first traction rope and the second traction rope, the pressure piece is arranged on the side of the first traction rope away from the second traction rope, and the pressure piece is connected to the traction wheel, and the first traction rope is located on the movement path of the pressure piece. The above scheme can simplify the structure and operation process of the handle.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a handle and an endoscope. Background Art

[0002] With the continuous development of medical technology, endoscopes are increasingly used in diagnostic examinations, minimally invasive surgery, etc. In actual use of the endoscope, the traction rope can be pulled by the operating handle to pull the curved section at the front end of the insertion part, thereby achieving a bending action of the curved section to adjust the direction of the front end of the insertion part.

[0003] In related endoscope technologies, in order to obtain clear images inside the human body cavity, a bending section capable of realizing segmented bending can be configured in the insertion part, and this is achieved by adjusting the line of sight between the front camera of the insertion part and the target tissue. However, the above solution requires two traction wheels to be arranged in the handle to pull the two traction ropes that realize the segmented bending of the bending section, which makes the handle structure too complicated and the operation process more cumbersome. Summary of the invention

[0004] The present application provides a handle and an endoscope, which can simplify the structure and operation process of the handle.

[0005] In order to solve the above problems, this application adopts the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a handle for use in an endoscope, the handle comprising a first traction rope, a second traction rope, a traction wheel, a pressing member, and a stopper, wherein:

[0007] The first traction rope and the second traction rope are relatively sleeved on the traction wheel, the stopper is arranged between the first traction rope and the second traction rope, the pressure member is arranged on the side of the first traction rope away from the second traction rope, and the pressure member is connected to the traction wheel, and the first traction rope is located on the movement path of the pressure member.

[0008] In a second aspect, an embodiment of the present application provides an endoscope, comprising the handle described in the first aspect of the present application.

[0009] The technical solution adopted in the embodiments of the present application can achieve the following beneficial effects:

[0010] (1) By providing a pressing member connected to the traction wheel, and the pressing member is disposed on the side of the first traction rope away from the second traction rope. In this way, when the traction wheel rotates, it can simultaneously pull the first traction rope and the second traction rope in the direction away from the bending section, thus successfully realizing the segmented bending action of the bending section. Compared with the related art, the handle disclosed in the embodiment of the present application reduces the setting of the traction wheel and its accessories, and can effectively simplify the structure of the handle; at the same time, when specifically operating the handle, only one traction wheel needs to be controlled, and the operation process is more concise, and it also avoids the situation that it is difficult to cooperate when controlling two traction wheels in the related art.

[0011] (2) By providing a stop member between the first traction rope and the second traction rope, and the first traction rope is stopped and limited by the stop member to further bend and deform and tension the first traction rope. In this way, the release length of the first traction rope when the traction wheel rotates can be offset, thereby improving the pulling efficiency of the first traction rope on the bending section and ensuring that the first traction rope can effectively pull the bending section to achieve the bending action. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application.

[0013] In the drawings:

[0014] Figure 1 is a schematic diagram of the bending action of the bending section of the related art;

[0015] Figure 2 is a longitudinal sectional side view of the bending section disclosed in some embodiments of the present application and partial enlarged views at A and B therein;

[0016] Figure 3 is a schematic diagram of the structure of the endoscope disclosed in the first embodiment of the present application before the pressing member presses the first traction rope and a partial enlarged view at C therein;

[0017] Figure 4 is a schematic diagram of the structure of the endoscope disclosed in the first embodiment of the present application after the pressing member presses the first traction rope and a partial enlarged view at D therein (the bending action of the insertion portion is not shown);

[0018] Figure 5 is a schematic diagram of the cooperation relationship between the first traction rope and the stop member disclosed in the first embodiment of the present application;

[0019] Figure 6 is a schematic diagram of the structure of the endoscope disclosed in the second embodiment of the present application when the stop member is in the first working position and a partial enlarged view at E therein;

[0020] Figure 7 Schematic diagram of the endoscope disclosed in the second embodiment of the present application when the stopper is in the second working position and a partial enlarged view at F therein;

[0021] Figure 8 Schematic diagram of the cooperation relationship between the first traction rope and the stopper disclosed in the second embodiment of the present application;

[0022] Figure 9 Schematic diagram of the bending action of the bending section when the stopper is in different working positions in the second embodiment of the present application.

[0023] Explanation of reference numerals:

[0024] 120'-First traction rope, 130'-Second traction rope, 210'-Bending section,

[0025] 100-Handle,

[0026] 110-Housing, 111-Open end, 120-First traction rope, 121-Third limiting part, 130-Second traction rope, 131-Fourth limiting part, 140-Traction wheel, 150-Compression member, 151-Second limiting part, 160-Stopper, 161-First limiting part, 162-Operating part, 170-Second connecting member,

[0027] 200-Insertion part, 210-Bending section, 211-Snake bone unit, 211a-Card slot. Detailed description of the specific implementation

[0028] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0029] The technical solutions disclosed in each embodiment of the present application will be described in detail below with reference to the drawings.

[0030] Please refer to Figure 1 , in some related technologies, the first traction rope 120' is connected to a position at a distance from the distal end of the bending section 210', and the second traction rope 130' is connected to the distal end of the bending section 210'. In this way, when the two traction ropes are pulled simultaneously, the bending section 210' can show Figure 1 a stepped segmented bending posture similar to that in

[0031] However, in order to control the above-mentioned bending section 210', two traction wheels need to be configured in the handle of the related art to respectively control the pulling of the first traction rope 120' and the second traction rope 130'. This results in an overly complex structure of the handle and an increase in production costs. At the same time, during specific use, the operator needs to cooperate to control the two traction wheels to achieve the segmented bending action of the bending section 210', making the operation process cumbersome.

[0032] In view of the above technical problems, an embodiment of the present application provides a handle for use in an endoscope.

[0033] Please refer to Figures 2 to 9 , the handle 100 disclosed in the embodiment of the present application includes a first traction rope 120, a second traction rope 130, a traction wheel 140, a pressing member 150, and a stopper 160, where:

[0034] The first traction rope 120, the second traction rope 130, and the traction wheel 140 all belong to the traction mechanism of the handle 100. The distal ends of the first traction rope 120 and the second traction rope 130 are both connected to the bending section 210, and their proximal ends are connected to the traction wheel 140. Thus, when controlling the rotation of the traction wheel 140, the corresponding traction rope can be pulled to pull the bending section 210, thereby achieving the corresponding bending action of the bending section 210.

[0035] Specifically, the first traction rope 120 and the second traction rope 130 are relatively sleeved on the traction wheel 140. In this way, when the traction wheel 140 rotates, the first traction rope 120 and the second traction rope 130 will be wound around the traction wheel 140 to achieve tensioning, or will be disengaged from the traction wheel 140 to be relaxed, thereby pulling or releasing the bending section 210. To facilitate the socketing of each traction rope with the traction wheel 140, as Figure 3 shown, the traction wheel 140 is provided with positioning grooves on its circumference for positioning and installing the traction ropes.

[0036] It should be noted that in the embodiment of the present application, "proximal end" and "distal end" refer to the relative positions of the endoscope and its accessories with respect to the user in the use environment. Among them, 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".

[0037] The handle 100 may further include a control member (such as a lever, a dial, a handle, etc.) provided outside the housing 110. The control member is connected to the traction wheel 140, and the operator can drive the traction wheel 140 to rotate by driving the control member.

[0038] In an embodiment of the present application, the pressing member 150 is disposed on a side of the first towing rope 120 away from the second towing rope 130, and the pressing member 150 is connected to the towing wheel 140. The first towing rope 120 is located on the movement path of the pressing member 150.

[0039] It can be understood that in such a structural layout, the stop member 160 and the pressing member 150 are respectively located on both sides of the first towing rope 120. Among them, since the pressing member 150 is connected to the towing wheel 140, when the towing wheel 140 rotates, the pressing member 150 will also move along an arc trajectory around the axis of the towing wheel 140. At the same time, as Figure 3 shown, since the first towing rope 120 is located on the movement path of the pressing member 150, during the counterclockwise rotation of the towing wheel 140, the pressing member 150 will move to a position in contact with the first towing rope 120.

[0040] Please refer to Figure 4 , if the towing wheel 140 continues to rotate counterclockwise, the pressing member 150 will continue to move towards the second towing rope 130, and it will press the first towing rope 120 to deform towards the second towing rope 130, and the part of the first towing rope 120 in contact with the pressing member 150 will be in a bent state, so as to be able to pull the first towing rope 120 in a direction away from the bent section 210, and pull the bent section 210 through the first towing rope 120 to achieve a bending action.

[0041] At the same time, during the counterclockwise rotation of the towing wheel 140, the towing wheel 140 will pull the second towing rope 130, and the second towing rope 130 will move in a direction away from the bent section 210, so as to pull the bent section 210 to achieve a bending action.

[0042] It can be seen that in the handle disclosed in the embodiment of the present application, when the towing wheel 140 rotates, it can simultaneously pull the first towing rope 120 and the second towing rope 130 in a direction away from the bent section 210, thus successfully realizing the segmented bending action of the bent section 210. Compared with the related art, the handle 100 of the embodiment of the present application reduces the setting of the towing wheel and its accessories, and can effectively simplify the structure of the handle 100; at the same time, when the handle 100 of the embodiment of the present application is specifically operated, only one towing wheel 140 needs to be controlled, and the operation process is more concise, and it also avoids the situation that it is difficult to cooperate when two towing wheels need to be controlled in the related art.

[0043] It should be noted that in order to ensure that the pressure piece 150 can smoothly press the first traction rope 120, the pressure piece 150 needs to be arranged at an interval from the traction wheel 140 in the radial direction of the traction wheel 140. Then, when the pressure piece 150 is pressing the first traction rope 120, the length of the first traction rope 120 pulled by the pressure piece 150 in the direction away from the curved section 210 must be greater than the length of the first traction rope 120 released when the traction wheel 140 rotates counterclockwise. Therefore, when the traction wheel 140 rotates counterclockwise, the pressure piece 150 can pull the first traction rope 120 to move in the direction away from the curved section 210.

[0044] Of course, by rotating the traction wheel 140 in a clockwise direction, the first traction rope 120 and the second traction rope 130 can be released. In the embodiment of the present application, when describing the rotation of the traction wheel 140, the clockwise direction and the counterclockwise direction are only used to indicate relative directions, and do not limit the structure inside the handle 100.

[0045] In order to facilitate the specific description of the concept of the present application, the relative matching relationship of each structure in the endoscope and the relative bending direction of the bending section 210 are represented by the component spatial coordinate system in the accompanying drawings, but the direction indication of the spatial coordinate system does not limit the inventive concept embodied in the present application.

[0046] As mentioned above, Figures 2 to 4 As shown, when the traction wheel 140 is rotated in the counterclockwise direction, the first traction rope 120 can be pressed by the pressing member 150 in the direction away from the curved section 210 (in Figure 2 It is reflected in that the first traction rope 120 is roughly pulled in the direction to the right along the X-axis), but the traction wheel 140 rotating in the counterclockwise direction will release the winding of the first traction rope 120, and the first traction rope 120 needs to be in a tensioned state to effectively pull the bending section 210, that is, the pulling length of the bending section 210 by the first traction rope 120 needs to be subtracted from the release length of the traction wheel 140 to obtain the effective pulling length. As a result, when the bending section 210 is controlled to be bent in sections by rotating the traction wheel 140, the pulling efficiency of the first traction rope 120 on the bending section 210 is low, resulting in the problem that the corresponding section of the corresponding bending section 210 has no obvious bending action.

[0047] In this regard, the handle 100 of the embodiment of the present application further includes a stopper 160, and the stopper 160 is disposed between the first traction rope 120 and the second traction rope 130. It can be understood that with such a setting, the stopper 160 and the pressing member 150 are respectively disposed on both sides of the first traction rope 120. During the movement of the pressing member 150 along with the traction wheel 140, the stopper 160 will stop and limit the first traction rope 120; as the pressing member 150 continuously moves towards the direction where the second traction rope 130 is located, the first traction rope 120 will deform at the contact part under the limiting action of the stopper 160 and be in a bent state.

[0048] Combined with Figure 5 Specifically, in the handle disclosed in the embodiment of the present application, the length of the rope segment of the first traction rope 120 on the right side of the pressing member 150 has nothing to do with whether the stopper 160 is provided. Therefore, only the rope segment of the first traction rope 120 on the left side of the pressing member 150 where deformation exists needs to be considered. In order to visually display the differences of the handle disclosed in the embodiment of the present application before and after the stopper 160 is provided, the dotted line on the left side of the pressing member 150 represents the rope segment of the first traction rope 120 where deformation exists in the solution without the stopper 160, and the solid line on the left side of the pressing member 150 represents the rope segment of the first traction rope 120 where deformation exists in the solution with the stopper 160.

[0049] Among them, it is assumed that Figure 5 the length of the rope segment of the first traction rope 120 represented by the dotted line is c1, and in the solution with the stopper 160 provided, among the rope segments within the corresponding dotted line range along the X-axis direction, it is assumed that the length of the rope segment on the right side of the stopper 160 is a1, and the length of the rope segment on the left side of the stopper 160 is b1. Based on the shape of the first traction rope 120 before and after the stopper 160 is provided, according to the principle that one side of a triangle is less than the sum of the other two sides, a1 + b1 > c1. Then, during the process of pressing the first traction rope 120 by the pressing member 150, the stopper 160 of the embodiment of the present application can effectively increase the pulling length of the first traction rope 120 along the direction away from the bent section 210.

[0050] From the above analysis, it can be seen that in the handle 100 disclosed in the embodiment of the present application, the stopper 160 can stop and limit the first traction rope 120 to make the first traction rope 120 further bend and deform to be tensioned, so as to offset the release length of the first traction rope 120 when the traction wheel 140 rotates, thereby improving the pulling efficiency of the first traction rope 120 on the bent section 210, ensuring that the first traction rope 120 can effectively pull the bent section 210 to achieve a bending action, and thus realizing the segmented bending control of the bent section 210.

[0051] Such as Figure 6 and Figure 7As shown, in some embodiments of the present application, the stopper 160 is movably disposed along the axial direction of the handle 100. It should be noted that the axial direction of the handle 100 refers to the direction on the handle 100 that matches the extension direction of the towing rope, and is usually the direction with the largest size specification on the handle 100.

[0052] It can be understood that with such a setting, the stopper 160 can change its position relative to the first towing rope 120 by moving, thereby changing the contact part between the first towing rope 120 and the stopper 160. In Figure 6 and Figure 7 the illustrated embodiment, the dashed arrow in the drawing indicates the movable direction of the stopper 160, and specifically, it can be located on the X-axis.

[0053] Among them, as Figure 6 shown, when the stopper 160 moves to a position relatively closer to the pressing member 150, the bending degree of the first towing rope 120 in the illustration is larger; as Figure 7 shown, when the stopper 160 moves to a position relatively farther from the pressing member 150, the bending degree of the first towing rope 120 in the illustration is smaller. In comparison, Figure 6 the bending degree of the first towing rope 120 in

[0054] is larger, which can illustrate that the length of the first towing rope 120 pulled in the direction away from the bending section 210 is longer. Figure 8 Specifically, in the handle disclosed in the embodiments of the present application, the length of the rope segment of the first towing rope 120 on the right side of the pressing member 150 has nothing to do with whether the stopper 160 is provided. Therefore, only the deformed rope segment in the first towing rope 120 on the left side of the pressing member 150 needs to be considered. In order to visually display the difference in the pulling length of the first towing rope 120 changed by moving the stopper 160 disclosed in the embodiments of the present application, among the rope segments with different shapes of the first towing rope 120 on the left side of the pressing member 150, the solid line represents the deformed rope segment of the first towing rope 120 in the scheme where the stopper 160 is relatively closer to the pressing member 150, and the dashed line represents the deformed rope segment of the first towing rope 120 in the scheme where the stopper 160 is relatively farther from the pressing member 150.

[0055] Among them, in the solution where the stopper 160 is relatively closer to the pressing member 150, the length of the rope segment between the pressing member 150 and the stopper 160 is a2, and the length of the deformed rope segment on the left side of the stopper 160 is b2. In the solution where the stopper 160 is relatively closer to the pressing member 150, the length of the rope segment between the pressing member 150 and the stopper 160 is c2. Based on the shape of the first traction rope 120 before and after adjusting the stopper 160, and also according to the principle that one side of a triangle is less than the sum of the other two sides, it can be known that a2 + b2 > c2. Then, when the stopper 160 is moved to a position relatively closer to the pressing member 150, the length by which the first traction rope 120 is pulled in the direction away from the bending section 210 increases; when the stopper 160 is moved to a position relatively farther from the pressing member 150, the length by which the first traction rope 120 is pulled in the direction away from the bending section 210 decreases.

[0056] In the practical application of this embodiment, when the bending section 210 corresponding section cannot achieve an obvious or expected (able to achieve the purpose of adjusting the front end of the insertion part) bending action by pressing the first traction rope 120 through the pressing member 150, the distance between the stopper 160 and the pressing member 150 can be reduced by driving the stopper 160 to move towards the pressing member 150, so as to increase the length by which the first traction rope 120 is pulled in the direction away from the bending section 210, thereby enabling the first traction rope 120 to achieve an obvious or corresponding bending action.

[0057] Meanwhile, when the pressing member 150 is in place, the length by which the first traction rope 120 is pulled in the direction away from the bending section 210 can be changed by driving the stopper 160 to move along the axial direction of the handle 100. In this way, the tension of the first traction rope 120 pulling the bending section 210 can be adjusted in real time, and thus the bending posture of the bending section 210 can be adjusted in real time, which can be specifically manifested as the real-time change of the orientation of the front end of the insertion part 200.

[0058] Please refer to Figure 9 When, as Figure 6 the stopper 160 is moved to a position relatively closer to the pressing member 150, the bending amplitude of the bending section 210 along the Z-axis upward is greater, the front end of the insertion part 200 moves upward along the Z-axis, thereby increasing the viewing distance between the front-end camera and the target part, and the orientation of the front end of the insertion part 200 also deflects upward as a whole, specifically as shown by the front section of the bending section 210 drawn with a solid line in Figure 9 ; when, as Figure 7 the stopper 160 is moved to a position relatively farther from the pressing member 150, the bending amplitude of the bending section 210 along the Z-axis upward is smaller, and both the effect of the upward deflection of the orientation of the front end of the insertion part 200 and the effect of increasing the viewing distance of the front-end camera are relatively weakened compared to the former.

[0059] In addition, since the pulling length of the first traction rope 120 along the direction away from the bending section 210 can be adjusted by the moving stopper 160, when the pulling length of the first traction rope 120 is longer, the bending section 210 achieves a greater bending amplitude, and when the pulling length of the first traction rope 120 is shorter, the bending section 210 achieves a smaller bending amplitude. Therefore, before controlling the bending of the bending section 210, the response sensitivity of the bending action of the bending section 210 can be adjusted by debugging the position of the stopper 160.

[0060] In the embodiments of the present application, the specific moving setting manner of the stopper 160 is not limited.

[0061] As Figure 6 and Figure 7 shown, in some embodiments of the present application, the handle 100 includes a housing 110, and the stopper 160 is movably connected to the housing 110. In such a structural layout, the housing 110 is the mounting carrier of the stopper 160, and the stopper 160 can directly extend to be connected to the side wall of the housing 110.

[0062] Furthermore, as Figure 6 and Figure 7 shown, the stopper 160 can partially extend outside the housing 110 so that the part of the stopper 160 located outside the housing 110 can be held and operated by the operator. Among them, an operation part 162 convenient for holding can be provided at one end of the stopper 160 located outside the housing 110.

[0063] In another embodiment, the handle 100 may further include a first connecting member. One end of the first connecting member is connected to the stopper 160, and the other end can extend to be connected to the housing 110 and movably pass through the housing 110. The operator can control the first connecting member outside the housing 110 to drive the stopper 160 to move. For example, the first connecting member can extend along the Figure 8 Z-axis direction in

[0064] to be connected to the housing 110.

[0065] With such a setting, the stopper 160 is movably arranged through the first connecting member, which can ensure that the stopper 160 is always located between the first traction rope 120 and the second traction rope 130, and the position of controlling the first connecting member on the handle 100 can be changed by setting the extending position of the first connecting member, so as to match the hand operation habit of the operator. For example, the first connecting member can extend to a position adjacent to the external lever of the control traction wheel 140.

[0065] As Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, in some embodiments of the present application, the handle 100 further includes a second connecting member 170, and the pressing member 150 is connected to the end face of the traction wheel 140 through the second connecting member 170.

[0066] In such a structural layout, the second connecting member 170 extends from one side of the end face of the traction wheel 140 to be connected to the pressing member 150. Inside the handle 100, the space on the end face side of the traction wheel 140 is relatively abundant. Such a setting not only improves the space utilization rate inside the handle 100 but also can prevent the second connecting member 170 from interfering with other structures.

[0067] Of course, the specific layout manner of the second connecting member 170 is not limited in the embodiments of the present application. For example, the second connecting member 170 can also be connected to the side surface of the traction wheel 140 in the circumferential direction, and it can also be in limit cooperation with the first traction rope 120 on one side of the first traction rope 120 to prevent the first traction rope 120 from detaching from the traction wheel 140.

[0068] In the embodiments of the present application, when the first traction rope 120 is pulled, it will be worn against both the stopper 160 and the pressing member 150. To prevent the first traction rope 120 from breaking after long-term wear and the stopper 160 and the pressing member 150 from slipping easily due to excessive wear, both the stopper 160 and the pressing member 150 can be set as pulleys, and the pulleys can rotate as the first traction rope 120 is pulled, thereby avoiding mutual wear. Further, the stopper 160 and the pressing member 150 can be pulleys made of a material such as nylon with a relatively high friction coefficient to improve the anti-slip performance between the pulleys and the first traction rope 120.

[0069] As Figure 6 and Figure 7 shown, in some embodiments of the present application, the housing 110 is provided with an opening 111, and the opening 111 is correspondingly arranged with at least one of the stopper 160 and the pressing member 150.

[0070] It can be understood that the opening 111 can be correspondingly arranged with only one of the stopper 160 and the pressing member 150, or it can be correspondingly arranged with both of them. For the convenience of description, the case where both the stopper 160 and the pressing member 150 are correspondingly arranged with the opening 111 is taken as an example for illustration.

[0071] In such a structural layout, the stopper 160 and the pressing member 150 are exposed through the opening 111, so that it is convenient for the operator to observe the cooperation relationship between the first traction rope 120 and the stopper 160 and the pressing member 150. When there is a risk of the first traction rope 120 shifting or detaching, tools can be inserted through the opening 111 to adjust the position of the first traction rope 120. Even if the first traction rope 120 has separated from the stopper 160 and the pressing member 150, the first traction rope 120 can be adjusted and reset through tools at the opening 111.

[0072] As Figures 3 to 8 shown, in some embodiments of the present application, both the stopper 160 and the pressing member 150 are circular rod-shaped structural members, and the rod diameter of the stopper 160 is greater than that of the pressing member 150.

[0073] It can be understood that the circular rod shape makes the circumferential sides of the stopper 160 and the pressing member 150 smoother, so that the wear between them and the first traction rope 120 can be reduced. At the same time, since the rod diameter of the pressing member 150 is smaller, the contact area between the two when the pressing member 150 presses the first traction rope 120 is smaller, so that a greater pressure can be obtained, so that the first traction rope 120 is more easily deformed and bent when the first traction rope 120 is pressed. Since the rod diameter of the stopper 160 is larger, the contact area between the two when it cooperates with the first traction rope 120 is larger, so that its limiting and supporting effect on the first traction rope 120 can be optimized, preventing the first traction rope 120 from skewing, thereby improving the cooperation stability of the first traction rope 120.

[0074] As Figure 7 shown, in some embodiments of the present application, at least one of the stopper 160 and the pressing member 150 is arranged to extend along the axial direction of the traction wheel 140.

[0075] It can be understood that only one of the stopper 160 and the pressing member 150 can be arranged along the axial direction of the traction wheel 140, or both can be arranged along the axial direction of the traction wheel 140. For the convenience of subsequent description, the example in which both the stopper 160 and the pressing member 150 extend along the axial direction of the traction wheel 140 is taken for illustration.

[0076] As described above, the first traction rope 120 is generally arranged to extend along the axial direction of the handle 100, that is, generally along the X-axis direction. For the convenience of the structural layout of the handle 100, the traction wheel 140 is usually configured such that its axial direction is perpendicular to the axial direction of the handle 100, so that the stopper 160 and the pressing member 150 are arranged to extend in a direction perpendicular to the first traction rope 120, that is, generally along the Y-axis direction. Of course, in the embodiments of the present application, there can be various position layout manners for the stopper 160 and the pressing member 150. For example, both the stopper 160 and the pressing member 150 can form an acute angle relationship with the first traction rope 120.

[0077] Comparing the above two layout schemes of the two stoppers 160 and the pressing member 150, it can be seen that when the stopper 160 and the pressing member 150 are arranged along the axial direction of the traction wheel 140, their extension length in the Y-axis direction is the longest. When the stopper 160 and the pressing member 150 extend at an acute angle to the first traction rope 120, there will be a component in the X-axis direction, and the component in the Y-axis direction will decrease. During the cooperation of the first traction rope 120 with the pressing member 150 and the stopper 160, the first traction rope 120 extending substantially along the X-axis direction is very likely to slip laterally in the Y-axis direction. In the embodiment where the stopper 160 and the pressing member 150 slide axially along the traction wheel 140, since their extension length in the Y-axis direction is the longest, the situation where the first traction rope 120 slips out from the ends of the stopper 160 and the pressing member 150 can be avoided.

[0078] As Figure 7 shown, in some embodiments of the present application, the stopper 160 includes a first limiting portion 161 provided at at least one end of its axial direction, and the first limiting portion 161 can be in limiting cooperation with the first traction rope 120 in the axial direction of the stopper 160.

[0079] It can be understood that during the cooperation of the stopper 160 and the first traction rope 120, the first limiting portion 161 can prevent the first traction rope 120 from slipping out of the end of the stopper 160. Among them, as Figure 7 shown, in the embodiment where the stopper 160 is directly connected to the housing 110 along its axial direction, the first limiting portion 161 can be provided only at the end of the stopper 160 facing away from the housing 110; in the embodiment where the stopper 160 is connected to the first connecting member through its middle part, the first limiting portions 161 can be provided at both ends of the stopper 160.

[0080] And / or, the pressing member 150 includes a second limiting portion 151 provided at at least one end of its axial direction, and the second limiting portion 151 can be in limiting cooperation with the first traction rope 120 in the axial direction of the pressing member 150.

[0081] It can be understood that during the cooperation of the pressing member 150 and the first traction rope 120, the second limiting portion 151 can prevent the first traction rope 120 from slipping out of the end of the pressing member 150. Among them, as Figure 7 shown, in the embodiment where the pressing member 150 is connected to the traction wheel 140 through the second connecting member 170, the second limiting portion 151 can be provided only at the end of the pressing member 150 facing away from the second connecting member 170; in the embodiment where the pressing member 150 is connected to the second connecting member 170 through its middle part, the second limiting portions 151 can be provided at both ends of the pressing member 150.

[0082] As Figures 2 to 9As shown, an embodiment of the present application further provides an endoscope, which includes the handle 100 mentioned in any of the aforementioned schemes, so that the endoscope of this embodiment has the beneficial effects of the aforementioned handle 100, which will not be repeated here.

[0083] The endoscope in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of the endoscope.

[0084] like Figure 2 As shown, in some embodiments of the present application, the endoscope includes an insertion portion 200, the insertion portion 200 includes a bending section 210, and the first traction rope 120 and the second traction rope 130 are arranged relatively to each other in the radial direction of the bending section 210, so that the bending section 210 can perform bending movements in two opposite directions respectively.

[0085] At the same time, the first traction rope 120 is connected to the first position of the curved section 210, and the second traction rope 130 is connected to the distal end of the curved section 210, and the first position and the distal end of the curved section 210 are arranged at intervals along the axial direction of the curved section 210. It can be understood that the connection point between each traction rope and the curved section 210 is the force application point of each traction rope pulling the curved section 210. Under this structural layout, the second traction rope 130 pulls the distal end of the curved section 210 to make the curved section 210 bend downward approximately along the Z axis, and the first traction rope 120 pulls the first position of the curved section 210 to make the curved section 210 bend upward approximately along the Z axis.

[0086] Since the first position and the distal end of the curved segment 210 are arranged at intervals along the axial direction of the curved segment 210, that is, on the curved segment 210, there is a distance between the first position and its distal end, so that the force application point of the second traction rope 130 on the curved segment 210 and the force application point of the first traction rope 120 on the curved segment 210 are distributed at intervals along the axial direction. Since the curved segment 210 starts to contract at the force application point when being pulled to achieve the bending action, then when the first traction rope 120 pulls the curved segment 210, the section of the curved segment 210 between its distal end and the first position will not be pulled by the first traction rope 120, and combined with the pulling action of the second traction rope 130 on the distal end of the curved segment 210, the traction of the curved segment 210 in different regions is achieved, thereby achieving the segmented bending control of the curved segment 210.

[0087] In order to ensure that each traction rope can smoothly pull the curved section 210, the traction ropes are usually arranged on the curved section 210 at intervals. Figure 2As shown, card slots 211a may be provided at intervals on the bending section 210, and the towing rope may be threaded through the card slots 211a. Specifically, the card slots 211a may be formed by the inward concavity of partial side walls of the bending section 210.

[0088] For the convenience of processing and installation, as Figure 3 shown, a third limiting portion 121 may be provided at the distal end of the first towing rope 120, and the third limiting portion 121 and an adjacent card slot 211a are in axial limiting cooperation, so as to realize the assembly with the bending section 210; a fourth limiting portion 131 may be provided at the distal end of the second towing rope 130, and the fourth limiting portion 131 and an adjacent card slot 211a are in axial limiting cooperation, so as to realize the assembly with the bending section 210.

[0089] In the embodiments of the present application, the specific type of the bending section 210 is not limited. As Figure 2 shown, the bending section 210 may be a snake bone structure and is composed of a plurality of snake bone units 211 connected in sequence; the bending section 210 may also be an integrally cut bending pipe body, or a pipe body made of a flexible material (for example, a flexible pipe body in the shape of a corrugated pipe).

[0090] In the above embodiments of the present application, the differences between the various embodiments are mainly described. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a more optimal embodiment. Considering the simplicity of the text, it will not be elaborated here.

[0091] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A handle used for an endoscope. It is characterized in that The handle comprises a first traction rope, a second traction rope, a traction wheel, a pressing member and a stopper, wherein: The first traction rope and the second traction rope are relatively sleeved on the traction wheel, and one of the first traction rope and the second traction rope is used to connect to the distal end of the curved section of the endoscope, and the other is used to connect to a position on the curved section spaced apart from the distal end thereof; The stopper is arranged between the first traction rope and the second traction rope, the pressing member is arranged on the side of the first traction rope away from the second traction rope, and the pressing member is connected to the traction wheel, and the first traction rope is located on the movement path of the pressing member; The handle is configured so that, when the pressing member presses the first traction rope, the length of the first traction rope pulled by the pressing member in a direction away from the curved section is greater than the length of the first traction rope released by the traction wheel due to rotation.

2. The handle according to claim 1, It is characterized in that The stopper is movably arranged along the axial direction of the handle.

3. The handle according to claim 2, It is characterized in that The handle includes a housing, the stopper is movably connected to the housing, and the stopper partially extends to the outside of the housing.

4. The handle according to claim 1, It is characterized in that The handle further comprises a second connecting piece, and the pressing piece is connected to the end surface of the traction wheel via the second connecting piece.

5. The handle according to claim 1, It is characterized in that The handle comprises a shell, the shell is provided with an opening, and the opening is arranged corresponding to at least one of the stopper and the pressing member.

6. A handle according to any one of claims 1 to 5, It is characterized in that The stopper and the pressing member are both round rod-shaped structural members, and the rod diameter of the stopper is greater than the rod diameter of the pressing member.

7. A handle according to any one of claims 1 to 5, It is characterized in that At least one of the stopper and the pressing member is arranged to extend along the axial direction of the traction wheel.

8. A handle according to any one of claims 1 to 5, It is characterized in that The stopper comprises a first limiting portion provided at at least one end thereof in the axial direction, and the first limiting portion can be limitedly matched with the first traction rope in the axial direction of the stopper; And / or, the pressing member includes a second limiting portion provided at at least one end thereof in the axial direction, and the second limiting portion can cooperate with the first traction rope in the axial direction of the pressing member.

9. An endoscope, It is characterized in that A handle comprising the handle according to any one of claims 1 to 8.

10. The endoscope according to claim 9, It is characterized in that The endoscope includes an insertion portion, which includes a curved segment. The first traction rope and the second traction rope are arranged opposite to each other in the radial direction of the curved segment. The first traction rope is connected to a first position of the curved segment, and the second traction rope is connected to a distal end of the curved segment. The first position and the distal end of the curved segment are spaced apart along the axial direction of the curved segment.

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