Steering mechanism and endoscope

Abstract

The utility model discloses a steering mechanism and an endoscope, and the steering mechanism comprises a rotating wheel and a clamping piece. The rotating wheel comprises a first main body part and a connecting shaft, the axial end part of the first main body part is provided with a first clamping surface, the connecting shaft is connected to the first main body part, the connecting shaft is used for connecting an endoscope main body and enabling the first main body part to rotate relative to the endoscope main body, the clamping piece comprises a second main body part and a clamping part, and the second main body part is provided with a second clamping surface; the clamping part is connected with the second main body part, the clamping part is connected to the first main body part in a clamped mode, and the first clamping face and the second clamping face are oppositely arranged and used for clamping the two traction ropes. In the process of installing the traction ropes, the ends of the two traction ropes can be arranged on the first clamping face firstly, then the clamping piece is clamped to the first main body part so that the ends of the two traction ropes can be jointly clamped between the first clamping face and the second clamping face, installation is easy and convenient, winding of the traction ropes is not needed, and the risk that a user is cut is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of endoscopes, in particular to a steering mechanism and an endoscope. Background Art

[0002] An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, and software. It has image sensors, optical lenses, lighting sources, mechanical devices, etc. As an important auxiliary medical instrument for detecting lesions in human internal organs, it is widely used in various surgical operations. Through the endoscope, the lesion site can be clearly and intuitively understood, and the accuracy of lesion diagnosis can be improved. In some technologies, in order to achieve the steering of the endoscope, a traction rope is fixed to the steering wheel with a screw, and the other end of the traction rope is connected to the head of the endoscope, thereby driving the head of the endoscope to turn by turning the steering wheel. However, since the endoscope is a slender structure, the traction rope used is smaller in diameter. The screw locking method is not only difficult to operate, but also the user's hands are easily cut by the traction rope during installation. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a steering mechanism that can be used in an endoscope, making the installation of a traction wire simpler and improving the safety during installation.

[0004] The utility model also provides an endoscope comprising the steering mechanism.

[0005] The steering mechanism according to the first aspect of the present utility model is used to drive the actuator of the endoscope to rotate through a traction rope, and the steering mechanism includes a rotating wheel and a clamping member.

[0006] The rotating wheel includes a first main body and a connecting shaft, the axial end of the first main body has a first clamping surface, the connecting shaft is connected to the first main body, the connecting shaft is used to connect the endoscope body and enable the first main body to rotate relative to the endoscope body, the clamping member includes a second main body and a clamping portion, the second main body has a second clamping surface, the clamping portion is connected to the second main body, the clamping portion is clamped to the first main body, the first clamping surface and the second clamping surface are arranged opposite to each other, and are used to clamp the two traction ropes.

[0007] The steering mechanism according to the embodiment of the utility model has at least the following beneficial effects:

[0008] The first clamping surface is located at the axial end surface of the first main body, and the clamping piece is clamped to the first main body. Therefore, in the process of installing the traction rope, the ends of the two traction ropes can be set on the first clamping surface first, and then the clamping piece can be clamped to the first main body, so that the ends of the two traction ropes are clamped together between the first clamping surface and the second clamping surface, and the installation of the traction rope and the steering mechanism can be completed. The installation is simple and convenient, and there is no need to wind the traction rope during the installation process, which effectively reduces the risk of the traction rope causing cuts to the user.

[0009] According to some embodiments of the present invention, the plane where the axis of the first main body is located is defined as a cutting plane, the portion of the first main body located on one side of the cutting plane is the first half, and the portion on the other side is the second half;

[0010] The first main body portion has a mounting groove and two guide grooves, the mounting groove forming a mounting opening on the axial end face of the first main body portion, one end of the two guide grooves are connected to the mounting groove, and the other ends are respectively connected to the radial side face of the first half portion and the radial side face of the second half portion, and the side wall of the mounting groove opposite to the mounting opening includes the first clamping surface, so that the ends of the two traction ropes are clamped in the mounting groove and pass through the two guide grooves respectively.

[0011] According to some embodiments of the utility model, the radial side surfaces of the first main body portion define limiting grooves, the limiting grooves are communicated with the guide grooves, and the limiting grooves are used to accommodate the traction rope.

[0012] According to some embodiments of the utility model, a step structure is provided on the radial side of the first main body, and the step structure has an arc surface extending around the axis of the first main body. The outer contour of the clamping member is circular, and the outer edge of the clamping member protrudes from the arc surface along the radial direction of the first main body, and is defined by the step structure to form the limiting groove.

[0013] According to some embodiments of the utility model, the axial end surface of the first main body portion further has an insertion groove and a connecting hole, the connecting hole is connected to the insertion groove and penetrates the first main body portion axially, the clamping portion includes an insertion portion and a buckle, the buckle includes an elastic portion and a supporting portion, one end of the elastic portion is connected to the insertion portion, and the other end is connected to the supporting portion, and the supporting portion protrudes from the side surface of the connecting shaft along the first direction, the insertion portion is inserted into the insertion groove, the buckle can pass through the connecting hole, and make the supporting portion abut against the surface of the first main body portion away from the insertion groove;

[0014] Wherein, the first direction is perpendicular to the direction in which the clamping portion is inserted into the plug-in slot.

[0015] According to some embodiments of the utility model, the traction rope is a steel wire rope, the rotating wheel also includes a first gasket, and the clamping member also includes a second gasket. The first gasket and the second gasket are both soft structures. The first gasket is connected to the first clamping surface, and the second gasket is connected to the second clamping surface. The first gasket and the second gasket are used to clamp the steel wire rope.

[0016] According to some embodiments of the present invention, the first gasket and the first main body are split structures, and the second gasket and the second main body are split structures.

[0017] According to some embodiments of the present utility model, the first gasket and the second gasket are connected to form a clamping block of an integral structure, and the clamping block has a clamping hole, and the clamping hole is used to accommodate the end of the traction rope.

[0018] According to some embodiments of the present invention, the clamping block has a first contact plane and a second contact plane that are arranged opposite to each other, the first contact plane is in contact with the first clamping surface, and the second contact plane is in contact with the second clamping surface.

[0019] An endoscope according to an embodiment of the second aspect of the utility model comprises: an endoscope body, a traction rope and the steering mechanism implemented in the first aspect.

[0020] The endoscope body includes a handle, a flexible tube and an actuator, one end of the flexible tube is connected to the handle, and the other end is connected to the actuator, the steering mechanism is rotatably connected to the handle, and the traction rope endoscope includes two traction ropes, one end of the two traction ropes are clamped between the first gasket and the second gasket, and the other end is connected to the actuator at intervals, and the connecting shaft is located between the two traction ropes.

[0021] The endoscope according to the embodiment of the utility model has at least the following beneficial effects:

[0022] The steering mechanism of the first aspect embodiment is adopted, and the first clamping surface is located at the axial end surface of the first main body part, and the clamping piece is clamped to the first main body part. Therefore, in the process of installing the traction rope, the ends of the two traction ropes can be first set on the first clamping surface, and then the clamping piece can be clamped to the first main body part, so that the ends of the two traction ropes are clamped together between the first clamping surface and the second clamping surface, and the installation of the traction rope and the steering mechanism can be completed. The installation is simple and convenient, and there is no need to wrap the traction rope during the installation process, which effectively reduces the risk of the traction rope causing cuts to the user.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 It is a structural schematic diagram of a steering mechanism of an embodiment of the first aspect of the utility model;

[0026] Figure 2 for Figure 1 Exploded diagram of

[0027] Figure 3 for Figure 2 The structural diagram of the middle steering wheel;

[0028] Figure 4 for Figure 2 A schematic diagram of the structure of the middle clamping member;

[0029] Figure 5 for Figure 2 Schematic diagram of the structure of the middle clamping block;

[0030] Figure 6 A schematic structural diagram of an endoscope according to a second embodiment of the utility model;

[0031] Figure 7 for Figure 6 Schematic diagram of the structure of the steering mechanism and traction rope.

[0032] Reference numerals:

[0033] Steering mechanism 1000; endoscope body 2000;

[0034] Rotating wheel 100, first main body 110, first clamping surface 111, mounting groove 112, mounting opening 113, guide groove 114, step structure 115, arc surface 116, plug-in groove 117, connecting hole 118, connecting shaft 120, cutting surface 130, first half 140, second half 150, first gasket 160;

[0035] The clamping member 200 , the second main body 210 , the second clamping surface 211 , the clamping portion 220 , the plugging portion 221 , the buckle 222 , the connecting portion 2221 , the abutting portion 2222 , the second gasket 230 , the limiting portion 240 , and the clamping slot 250 ;

[0036] Limiting groove 300, rotating handle 400;

[0037] Clamping block 500, clamping hole 510, first contact plane 520, second contact plane 530;

[0038] A handle 600 , a flexible tube 700 , an actuator 800 , and a traction rope 900 . DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0043] An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, and software. It has image sensors, optical lenses, lighting sources, mechanical devices, etc. As an important auxiliary medical instrument for detecting lesions in human internal organs, it is widely used in various surgical operations. Through the endoscope, the lesion site can be clearly and intuitively understood, and the accuracy of lesion diagnosis can be improved. In some technologies, in order to achieve the steering of the endoscope, a traction rope is fixed to the steering wheel by a screw, and the other end of the traction rope is connected to the head of the endoscope, thereby driving the head of the endoscope to turn by turning the steering wheel. However, since the endoscope is a slender structure, the traction rope used is smaller in diameter. The screw locking method requires the traction rope to be wrapped around the outside of the screw, and then the screw head is clamped to the traction rope by tightening the screw. Since the traction rope is thin, it is more troublesome to wrap it, and it is easy to cut the user's hand when wrapping it.

[0044] Based on the above problems, the utility model provides a steering mechanism 1000, which can be used for steering an endoscope. During the installation of the traction rope 900, there is no need to wind the traction rope 900, and two traction ropes 900 can be fixed with only one clamping member 200 (such as Figure 7 The installation process is simple and convenient with high safety. Figures 1 to 4 , Figure 1 1 is a schematic structural diagram of a steering mechanism 1000 according to an embodiment of the first aspect of the present utility model. Figure 2 for Figure 1 Exploded diagram of Figure 3 for Figure 2 Schematic diagram of the structure of the middle steering wheel. Figure 4 for Figure 2 The steering mechanism 1000 of this embodiment includes a rotating wheel 100 and a clamping member 200.

[0045] The rotating wheel 100 includes a first main body 110 and a connecting shaft 120 (eg, Figure 3 The axial end of the first main body 110 has a first clamping surface 111, and the connecting shaft 120 is connected to the first main body 110. The connecting shaft 120 is used to connect the endoscope body 2000 and enable the first main body 110 to rotate relative to the endoscope body 2000, such as the connecting shaft 120 is rotatably connected to the endoscope body 2000, or the first main body 110 is rotatably connected to the connecting shaft 120. The clamping member 200 includes a second main body 210 and a clamping portion 220 (such as Figure 2As shown in the figure, the second main body 210 has a second clamping surface 211, the clamping portion 220 is connected to the second main body 210, and the clamping portion 220 is connected to the first connecting portion 2221 by a rotational clamping method, or as in some embodiments, the axial end surface of the first main body 110 further has a plug-in groove 117 and a connecting hole 118, the connecting hole 118 is connected to the plug-in groove 117 and axially penetrates the first main body 110, the clamping portion 220 includes a plug-in portion 221 and a buckle 222, and the buckle 22 2 comprises an elastic part and a resisting part 2222, one end of the elastic part is connected to the plug-in part 221, and the other end is connected to the resisting part 2222, and the resisting part 2222 protrudes from the side of the connecting shaft 120 along the first direction, the plug-in part 221 is plugged into the plug-in slot 117, the buckle 222 can pass through the connecting hole 118, and the resisting part 2222 is abutted against the surface of the first main body part 110 away from the plug-in slot 117, so as to realize the clamping of the clamping member 200 and the first main body part 110. Among them, the first clamping surface 111 and the second clamping surface 211 are arranged opposite to each other, and are used to clamp the two traction ropes. It is not limited to that the first clamping surface 111 and the second clamping surface 211 are in direct contact with the traction rope 900. Other structures (such as the first gasket 160 and the second gasket 230 in the following embodiment) can be arranged between the first clamping surface 111 and the traction rope 900 and between the second clamping surface 211 and the traction rope 900. Specifically, the first clamping surface 111 is located at the axial end surface of the first main body 110, and the clamping member 200 is clamped to the first main body 110. Therefore, in the process of installing the traction rope 900, the ends of the two traction ropes 900 can be first set on the first clamping surface 111, and then the clamping member 200 can be clamped to the first main body 110, so that the ends of the two traction ropes 900 are clamped together between the first clamping surface 111 and the second clamping surface 211, and the installation of the traction rope 900 and the steering mechanism 1000 can be completed. The installation is simple and convenient, and there is no need to wind the traction rope 900 during the installation process, which effectively reduces the risk of the traction rope 900 causing cuts to the user.

[0046] Specifically, after the steering mechanism 1000 of this embodiment is installed on the endoscope body 2000, the two traction ropes 900 can be pulled by rotating the first main body 110, thereby achieving the steering of the endoscope execution part 800. Furthermore, in order to make the steering mechanism 1000 more convenient to use, the radial surface of the first main body 110 is also provided with a rotating handle 400. Therefore, during use, the user can achieve the rotation of the first main body 110 by pushing the rotating handle 400. Furthermore, in some embodiments, the first main body 110 also has a limit member, which protrudes from the radial side or axial side of the first main body 110. The limit member is used to cooperate with the limit hole on the endoscope body 2000 to achieve the position fixation of the first main body 110. Specifically, for example, the limit member is connected to the axial end face of the first main body portion 110, and correspondingly, the endoscope body 2000 is provided with a plurality of limit holes, and the plurality of limit holes are distributed around the axis of the first main body portion 110. During use, the position of the first main body portion 110 can be fixed by the cooperation between the limit member and different limit holes. Therefore, during use, the user does not need to continuously apply force to the rotating handle 400 to fix the execution part 800 in one direction, thereby making the endoscope more convenient to use.

[0047] Reference Figure 3 In some embodiments, the plane where the axis of the first main body 110 is located is defined as the cutting surface 130, the part of the first main body 110 located on one side of the cutting surface 130 is the first half 140, and the part on the other side is the second half 150. The first main body 110 has a mounting groove 112 and two guide grooves 114. The mounting groove 112 forms a mounting opening 113 on the axial end surface of the first main body 110. One end of the two guide grooves 114 is connected to the mounting groove 112, and the other end is respectively connected to the radial side surface of the first half 140 and the radial side surface of the second half 150. The side wall of the mounting groove 112 opposite to the mounting opening 113 includes a first clamping surface 111, so that the ends of the two traction ropes 900 are clamped in the mounting groove 112 and pass through the two guide grooves 114 respectively. Therefore, during the steering process, the traction rope 900 can be wound around the radial side of the first main body 110, thereby increasing the degree of traction of the traction rope 900 on the actuator 800, that is, the sensitivity of the actuator 800 is higher. Specifically, the steering degree of the actuator 800 is determined by the pulling degree of the traction rope 900, and the pulling degree of the traction rope 900 is determined by the degree of the traction rope 900 winding around the first main body 110. Based on this, the radial end surface of the first main body 110 is provided with a guide groove 114. During installation, the traction rope 900 can be guided to the radial side of the first main body 110, so as to achieve the maximum degree of winding of the traction rope 900 and the first main body 110, thereby improving the sensitivity of the actuator 800 of the endoscope.

[0048] Reference Figure 3 On the basis of the above-mentioned embodiment, the side wall of the guide groove 114 is smoothly connected to the radial side surface of the first main body 110, so that the traction rope 900 can be smoothly transitioned to the side surface of the first main body 110 to reduce the stress concentration of the traction rope 900 and the first main body 110. On the one hand, it can reduce the risk of breakage of the traction rope 900, and on the other hand, it can reduce the wear of the first main body 110, thereby improving the service life of the endoscope.

[0049] Reference Figure 2 In some embodiments, the radial side of the first main body 110 defines a limiting groove 300, which is connected to the guide groove 114 and is used to accommodate the traction rope 900. Specifically, the limiting groove 300 is directly formed on the radial side of the first main body 110, or is defined by the first main body 110 and other parts. During the installation process, after the traction rope 900 is passed through the guide groove 114, the traction rope 900 is extended along the limiting groove 300. Therefore, during use, the risk of the traction rope 900 being separated from the radial side of the first main body 110 due to axial deviation of the first main body 110 can be effectively reduced, thereby improving the reliability of the endoscope. Specifically, if the traction rope 900 is separated from the radial side of the first main body 110, not only will the sensitivity of the endoscope actuator 800 be reduced, but there may also be a risk that the traction rope 900 is stuck and the actuator 800 cannot be turned. In this embodiment, a limit groove 300 is provided on the radial side of the first main body 110, which can effectively improve this problem.

[0050] Reference Figure 2 and Figure 3 On the basis of the above embodiment, a step structure 115 is provided on the radial side of the first main body portion 110, and the step structure 115 has an arc surface 116 extending around the axis of the first main body portion 110. The outer contour of the clamping member 200 is circular, and the outer edge of the clamping member 200 protrudes from the arc surface 116 along the radial direction of the first main body portion 110, and is defined with the step structure 115 to form a limiting groove 300. Therefore, if the first main body 110 is machined, a milling machine can be used to form a guide groove 114 and a step surface on the end face of the first main body 110 at one time, without the need to use other equipment for processing. If the first main body 110 is injection molded, the first main body 110 can be easier to demold. It can be seen that no matter whether the first main body 110 is machined or injection molded, the present embodiment utilizes the step structure 115 on the side of the first main body 110 and the clamping member 200 to jointly define the limit groove 300, which can make the processing of the first main body 110 simpler, thereby reducing the processing cost of the first main body 110.

[0051] On the basis of the above embodiment, the clamping member 200 also includes a limiting portion 240, which is connected to the outer edge of the second main body portion 210 and protrudes from the second main body portion 210, and forms a card slot 250 between the limiting portion 240 and the clamping portion 220. The step structure 115 is inserted into the card slot 250, and a limiting groove 300 is defined between the limiting portion 240, thereby preventing the traction rope 900 from moving axially and getting stuck between the axial end face of the rotating wheel 100 and the clamping member 200, thereby avoiding the traction rope 900 from getting stuck, so as to improve the reliability of the endoscope.

[0052] Reference Figure 2 In some embodiments, the traction rope 900 is a steel wire rope, and the steering mechanism 1000 further includes a first gasket 160 and a second gasket 230. The first gasket 160 and the second gasket 230 are both soft structures. The first gasket 160 is connected to the first clamping surface 111, and the second gasket 230 is connected to the second clamping surface 211. The first gasket 160 and the second gasket 230 are used to clamp the traction rope. Specifically, the first gasket 160 and the second gasket 230 are soft structures. For example, the first gasket 160 and the second gasket 230 are made of copper or aluminum. Therefore, when the traction rope 900 is clamped by the first gasket 160 and the second gasket 230, the traction rope 900 can form a groove of a certain depth on the surface of the first gasket 160 and the second gasket 230. On the one hand, the stability of the clamping of the traction rope 900 can be improved, and on the other hand, the contact area between the traction rope 900 and the first gasket 160 and the second gasket 230 can be increased, so that the first main body 110 and the clamping member 200 are crushed.

[0053] Reference Figure 5 In some embodiments, the first gasket 160 and the first main body 110 are split structures, and the second gasket 230 and the second main body 210 are split structures. Therefore, the first gasket 160 and the first main body 110 can be formed by processing different materials, thereby reducing the manufacturing cost of the steering mechanism 1000. Specifically, for example, the first main body 110 is formed by processing low-cost non-metallic materials, and the first gasket 160 used for contacting the wire rope is formed by processing aluminum or copper, so that the first gasket 160 has a certain softness and has a higher strength. Therefore, there is no need to process the entire rotating wheel 100 with aluminum, thereby reducing the manufacturing cost, and at the same time, the weight of the steering mechanism 1000 can be reduced, which is more convenient for users to use. The second gasket 230 is the same, and will not be repeated here.

[0054] It should be noted that the first gasket 160 and the second gasket 230 may both be provided with two (eg Figure 2 As shown), they are used to clamp the ends of the two steel wire ropes respectively. The first gasket 160 and the second gasket 230 may also be provided with only one, which can clamp the ends of the two steel wire ropes together.

[0055] In some embodiments, the first gasket 160 and the second gasket 230 are connected to form a clamping block 500 of an integrated structure, and the clamping block 500 has a clamping hole 510, and the clamping hole 510 is used to accommodate the end of the traction rope 900. Specifically, for example, the first main body 110 has a mounting groove 112. During the installation process, the end of the traction rope 900 can be first inserted into the clamping hole 510 of the clamping block 500, and then the clamping block 500 is set in the mounting groove 112 to be clamped between the first clamping surface 111 and the second clamping surface 211, so that the clamping block 500 is deformed and clamps the wire rope, making the installation of the wire rope easier. Similarly, as described above, one clamping block 500 can be set, or two clamping blocks 500 can be set.

[0056] Based on the above facts, the clamping block 500 has a first contact plane 520 and a second contact plane 530 which are arranged opposite to each other. The first contact plane 520 is in contact with the first clamping surface 111, and the second contact plane 530 is in contact with the second clamping surface 211, thereby improving the stability of the clamping block 500 after being clamped, thereby improving the reliability of the steering mechanism 1000.

[0057] The endoscope of the second embodiment of the utility model comprises: an endoscope body 2000, a traction rope 900 and a steering mechanism 1000 implemented in the first aspect. The endoscope body 2000 comprises a handle 600, a flexible tube 700 and an actuator 800, one end of the flexible tube 700 is connected to the handle 600, and the other end is connected to the actuator 800, the steering mechanism 1000 is connected to the handle 600, and the endoscope comprises two traction ropes 900, one end of the two traction ropes 900 are clamped between the first clamping surface 111 and the second clamping surface 211, and the other end is connected to the actuator 800 at intervals, and the connecting shaft 120 is located between the two traction ropes 900. Specifically, the first clamping surface 111 is located at the axial end surface of the first main body 110, and the clamping member 200 is clamped to the first main body 110. Therefore, in the process of installing the traction rope 900, the ends of the two traction ropes 900 can be first set on the first clamping surface 111, and then the clamping member 200 can be clamped to the first main body 110, so that the ends of the two traction ropes 900 are clamped together between the first clamping surface 111 and the second clamping surface 211, and the installation of the traction rope 900 and the steering mechanism 1000 can be completed. The installation is simple and convenient, and there is no need to wind the traction rope 900 during the installation process, which effectively reduces the risk of the traction rope 900 causing cuts to the user.

[0058] The above is a detailed description of the embodiment of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiment, and various changes can be made without departing from the purpose of the utility model within the scope of knowledge possessed by ordinary technicians in the relevant technical field. In addition, in the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A steering mechanism, used to drive the actuator of the endoscope to rotate through a traction rope, characterized in that: The rotating wheel comprises a first main body and a connecting shaft, wherein the axial end of the first main body has a first clamping surface, the connecting shaft is connected to the first main body, the connecting shaft is used to connect to the endoscope body and enable the first main body to rotate relative to the endoscope body; The clamping member includes a second main body and a clamping portion, the second main body has a second clamping surface, the clamping portion is connected to the second main body, the clamping portion is clamped to the first main body, the first clamping surface and the second clamping surface are arranged opposite to each other and are used to clamp the two traction ropes.

2. The steering mechanism according to claim 1, characterized in that: The plane where the axis of the first main body is located is defined as a cutting plane, the part of the first main body located on one side of the cutting plane is defined as a first half, and the part on the other side is defined as a second half; The first main body portion has a mounting groove and two guide grooves, the mounting groove forming a mounting opening on the axial end face of the first main body portion, one end of the two guide grooves are connected to the mounting groove, and the other ends are respectively connected to the radial side face of the first half portion and the radial side face of the second half portion, and the side wall of the mounting groove opposite to the mounting opening includes the first clamping surface, so that the ends of the two traction ropes are clamped in the mounting groove and pass through the two guide grooves respectively.

3. The steering mechanism according to claim 2, characterized in that: The radial side surfaces of the first main body are defined to form limiting grooves, the limiting grooves are communicated with the guide grooves, and the limiting grooves are used to accommodate the traction rope.

4. The steering mechanism according to claim 3, characterized in that: A step structure is provided on the radial side of the first main body, and the step structure has an arc surface extending around the axis of the first main body. The outer contour of the clamping member is circular, and the outer edge of the clamping member protrudes from the arc surface along the radial direction of the first main body, and defines the limiting groove with the step structure.

5. The steering mechanism according to claim 1, characterized in that: The axial end surface of the first main body portion further comprises an inserting groove and a connecting hole, the connecting hole communicates with the inserting groove and penetrates the first main body portion in the axial direction, the clamping portion comprises an inserting portion and a buckle, the buckle comprises an elastic portion and a resisting portion, one end of the elastic portion is connected to the inserting portion, and the other end is connected to the resisting portion, and the resisting portion protrudes from the side surface of the connecting shaft in the first direction, the inserting portion is inserted into the inserting groove, the buckle can pass through the connecting hole, and make the resisting portion resist against the surface of the first main body portion away from the inserting groove; Wherein, the first direction is perpendicular to the direction in which the clamping portion is inserted into the plug-in slot.

6. The steering mechanism according to any one of claims 1 to 5, characterized in that: The traction rope is a steel wire rope, the rotating wheel also includes a first gasket, and the clamping member also includes a second gasket. The first gasket and the second gasket are both soft structures. The first gasket is connected to the first clamping surface, and the second gasket is connected to the second clamping surface. The first gasket and the second gasket are used to clamp the steel wire rope.

7. The steering mechanism according to claim 6, characterized in that: The first gasket and the first main body are a split structure, and the second gasket and the second main body are a split structure.

8. The steering mechanism according to claim 7, characterized in that: The first gasket and the second gasket are connected to form a clamping block of an integrated structure. The clamping block has a clamping hole, and the clamping hole is used to accommodate the end of the traction rope.

9. The steering mechanism according to claim 8, characterized in that: The clamping block has a first contact plane and a second contact plane which are arranged opposite to each other, the first contact plane is in contact with the first clamping surface, and the second contact plane is in contact with the second clamping surface.

10. An endoscope, characterized in that include: The endoscope body comprises a handle, a flexible tube and an actuator, wherein one end of the flexible tube is connected to the handle, and the other end is connected to the actuator; The steering mechanism according to any one of claims 1 to 9, wherein the steering mechanism is rotatably connected to the handle; The traction rope, the endoscope comprises two traction ropes, one end of the two traction ropes are clamped between the first clamping surface and the second clamping surface, the other end is connected to the execution part at intervals, and the connecting shaft is located between the two traction ropes.

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