Wire-passing structure, handle component, handle, and endoscope

Abstract

The application discloses a wire passing structure, a handle component, a handle and a endoscope, and relates to the technical field of medical devices. The wire passing structure is applied to an endoscope, and the wire passing structure comprises a mounting base and a separation piece. The mounting base is provided with a wire passing hole. The separation piece comprises a sleeve part for accommodating a traction rope and two open parts connected to two ends of the sleeve part respectively. The sleeve part is movably arranged in the wire passing hole. The open parts are arranged at the hole openings of the wire passing hole. The open parts are outwardly bent along the radial direction of the separation piece and are arranged in a spaced manner with the outer wall of the mounting base. The above scheme can weaken the abrasion problem caused by the traction rope when being pulled.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a wire-passing structure, a handle component, a handle, and an endoscope. Background Technology

[0002] With the continuous development of medical technology, endoscopes are being used more and more widely in diagnostic examinations, minimally invasive surgeries, and other fields. In the actual use of endoscopes, the traction rope can be pulled by the operating handle, thereby pulling the curved section of the insertion part to achieve the bending action of the curved section and adjust the orientation of the front end of the insertion part.

[0003] In related technologies, the housing of the endoscope has a cable pass-through hole for threading a traction rope. However, during the bending control process of the endoscope, the traction rope is gradually pulled under tension, causing wear in the cable pass-through hole area. Summary of the Invention

[0004] This application provides a cable guide structure, a handle component, a handle, and an endoscope, which can reduce wear and tear caused by the traction cable when it is pulled.

[0005] To solve the above problems, this application adopts the following technical solution:

[0006] In a first aspect, embodiments of this application provide a wiring structure for use in an endoscope. The wiring structure includes a mounting base and a spacer, wherein:

[0007] The mounting base has a wire-passing hole. The isolation member includes a sleeve for accommodating the traction rope and two open portions connected to both ends of the sleeve. The sleeve is movably disposed in the wire-passing hole, and the open portions are disposed at the opening of the wire-passing hole. The open portions are bent outward along the radial direction of the isolation member and are spaced apart from the outer wall of the mounting base.

[0008] Secondly, embodiments of this application provide a handle component, including the wire-passing structure described in the first aspect of this application; the handle component is a disposable or reusable section of an endoscope.

[0009] Thirdly, embodiments of this application provide a handle, including the wire-passing structure described in the first aspect of embodiments of this application.

[0010] Fourthly, embodiments of this application provide an endoscope, including an insertion part and a handle as described in the third aspect of embodiments of this application, wherein the handle is connected to the insertion part.

[0011] The technical solution adopted in the embodiments of this application can achieve the following beneficial effects:

[0012] In the cable-passing structure disclosed in this application embodiment, the sleeve is movably disposed in the cable-passing hole and can move with the pulled traction rope. Within the range of the movement of the isolation member, relative misalignment between the traction rope and the isolation member can be avoided. At the same time, the opening is spaced apart from the outer wall of the mounting base. Thus, the opening can be attached to the outer wall of the mounting base under the pressure of the traction rope. During this process, the opening allows the traction rope to be displaced a certain distance through deformation, and there is no relative misalignment between the traction rope and the isolation member.

[0013] Compared to related technologies, the cable-passing structure disclosed in this application achieves the displacement of the traction rope by moving the isolator and deforming the opening, thereby avoiding mutual wear between the traction rope and the isolator. This not only successfully achieves bending control of the curved section but also avoids damage to the isolator, thus ensuring that the range of motion of the traction rope remains approximately unchanged during the long-term use of the endoscope, so as to always obtain high bending control accuracy. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the handle component disclosed in some embodiments of this application, and a partial enlarged view of point A therein;

[0017] Figure 2 This is a schematic diagram of the handle component disclosed in some embodiments of this application from another perspective, and a partial enlarged view of point B therein;

[0018] Figure 3 This is a cross-sectional view along the CC direction of a handle component disclosed in some embodiments of this application, and a partial enlarged view of point D therein;

[0019] Figure 4 This is a schematic diagram of the structure of the isolation component disclosed in the first embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the mating relationship of the wire-passing structure disclosed in the first embodiment of this application;

[0021] Figure 6 This is a schematic diagram illustrating the principle of the cable-passing structure disclosed in the first embodiment of this application during the pulling process of the traction rope;

[0022] Figure 7 This is a schematic diagram of the structure of the isolation member disclosed in the second embodiment of this application.

[0023] Figure 8This is a schematic diagram of the mating relationship of the wire-passing structure disclosed in the second embodiment of this application;

[0024] Figure 9 This is a schematic diagram of the mating relationship of the wire-passing structure disclosed in the third embodiment of this application;

[0025] Figure 10 This is a schematic diagram showing the fit between the sleeve portion and the wall of the through hole as disclosed in some embodiments of this application.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100-Handle components,

[0028] 110-Shell, 111-Proximal end face, 112-Inner cavity, 113-Wire hole, 113a-Proximal orifice, 113b-Distal orifice, 114-Second arc surface, 115-Guide groove

[0029] 120 - First traction rope, 130 - Second traction rope, 140 - Transmission component

[0030] 150 - Isolator, 151 - Sleeve section, 151a - First tube body, 151b - Second tube body, 151c - Guide protrusion, 152 - Opening section, 152a - First arc surface, 152b - Third arc surface

[0031] 200-Insert section. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] The technical solutions disclosed in the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0034] In related technologies, to prevent the traction rope from abrading the housing when pulled, a protective structure needs to be installed inside the cable passage hole of the housing to separate the traction rope from the housing. Although the protective structure can protect the housing, the traction rope will still move relative to the surface of the protective structure. In this way, the traction rope can pull the curved section through axial displacement.

[0035] As can be seen, wear still exists between the traction rope and the protective structure. The surface of the protective structure may be worn into grooves, which reduces the traction range of the traction rope and thus affects the accuracy of bending control. For example, after the protective structure has worn into grooves, a slight pull on the traction rope will cause a large bending motion in the bending section, thus reducing the accuracy of bending control. To address the above technical problems, embodiments of this application provide a wire-passing structure for use in endoscopes.

[0036] Please participate Figures 1-10 The wiring structure disclosed in this application includes a mounting base and an isolation component 150.

[0037] The mounting base component has a wire-passing hole 113 for the traction rope to pass through. In the embodiments of this application, the specific application scenario of the wire-passing structure is not limited, that is, the specific type of mounting base component is not limited. For example, the mounting base component can be the handle housing 110. If the handle includes a disposable section and a reusable section, the mounting base component can be the housing 110 of either the disposable or reusable section. Alternatively, in some embodiments based on the internal structural layout of the handle, some functional components interfere with the traction rope. In such cases, these functional components can have wire-passing holes 113 to allow the traction rope to pass through. In this case, these functional components constitute the mounting base component.

[0038] The isolation member 150 includes a sleeve portion 151 for accommodating the traction rope and two open portions 152 respectively connected to both ends of the sleeve portion 151. The sleeve portion 151 is movably disposed in the wire passage hole 113, and the open portions 152 are disposed at the opening of the wire passage hole 113. The open portions 152 are bent outward along the radial direction of the isolation member 150 and are spaced apart from the outer wall of the mounting base.

[0039] It is understood that the isolation component 150 is a protective component of the cable passage structure, which can accommodate the traction rope at the cable passage hole 113 and isolate the traction rope from the surface of the mounting base in the area where the cable passage hole 113 is located, thereby preventing mutual wear between the traction rope and the mounting base.

[0040] Specifically, such as Figure 4 and Figure 5As shown, the sleeve portion 151 is the main part of the isolator 150 used to accommodate the traction rope, and it can separate the traction rope from the wall of the cable passage hole 113 in the circumferential direction, thereby preventing the traction rope from abrading the wall of the cable passage hole 113 when pulled. After the isolator 150 is installed in place, the opening portion 152 will be located at the opening of the cable passage hole 113, and the opening portion 152 bends outward along the radial direction of the isolator 150, which can cover the edge of the cable passage hole 113 in the axial direction, so as to separate the traction rope from the edge of the cable passage hole 113, thereby preventing the traction rope from abrading each other with the mounting base at the edge of the cable passage hole 113 when pulled.

[0041] Since the sleeve portion 151 is movably disposed within the wire passage hole 113, meaning there is a movable gap between the sleeve portion 151 and the wall of the wire passage hole 113, the sleeve portion 151 can undergo relative displacement with the mounting base within the wire passage hole 113. When it moves to the point where the open portion 152 abuts against the mounting base, the open portion 152 can mutually limit the outer wall of the mounting base to prevent the isolator 150 from detaching from the wire passage hole 113.

[0042] Next, through Figure 6 The examples illustrate the working principle of the guide structure disclosed in the embodiments of this application. Solid arrows represent the movement trend of the traction rope, while dashed arrows represent the movement trend of the separator 150 and its components.

[0043] Please see Figure 6 (a) Before pulling the traction rope (refer to the second traction rope 130 in the figure), the traction rope is in a slack state. As the traction rope is gradually pulled, it will shift along its axial direction and tend to tighten. During this process, the traction rope located inside the isolator 150 will gradually move upward toward the isolator 150 until it contacts the isolator 150, such as... Figure 6 As shown in (b).

[0044] Please see again. Figure 6 (b) Continue pulling the traction rope, due to the open section on the left side at 152 (refer to...). Figure 6 The open portion 152 of the distal orifice 113b of the wire passage hole 113 is spaced apart from the outer wall of the mounting base, with a movable gap between them. The sleeve portion 151 can move within the wire passage hole 113. Through the friction between the traction rope and the isolator 150, the traction rope will move the isolator 150 to the right in the direction it is pulled, until the left open portion 152 moves and abuts against the mounting base, thus limiting their movement. Figure 6 As shown in (c).

[0045] Please see again. Figure 6 (c) Continue pulling the traction rope, due to the open section on the right side at 152 (refer to...). Figure 6The open portion 152 of the near end opening 113a of the wire hole 113 is spaced apart from the outer wall of the mounting base, with a movable gap between them. Under the action of pulling the traction rope, the right open portion 152 is gradually pressed against the outer wall of the mounting base. During this process, the right open portion 152 deforms to adapt to the shape of the outer wall of the mounting base, such as... Figure 6 As shown in (d).

[0046] It should be noted that the descriptions of positional relationships in the above content are only used to indicate the relative positional features of the corresponding structures in the illustrated embodiments, and are not intended to limit the concept of this application.

[0047] It should be understood that the bending control of the endoscope's curved section is achieved by the displacement of the traction rope within a preset travel range.

[0048] Specifically, in use, the cable-passing structure disclosed in this application, based on the corresponding layout features of the open portion 152 and the sleeve portion 151, allows the isolation member 150 to move within the cable-passing hole 113. Thus, when the traction rope is pulled, the isolation member 150 will displace with the pulled traction rope, and within the range of movement of the isolation member 150, no relative misalignment will occur between the traction rope and the isolation member 150. Since the isolation member 150 can reciprocate, the range of movement of the traction rope will not be changed.

[0049] Meanwhile, after the isolator 150 moves into place with the traction rope, the traction rope continues to be pulled. One of the open portions 152 will adhere to the outer wall of the mounting base under the pressure of the traction rope. During this process, the open portion 152 deforms, allowing the traction rope to shift a certain distance, and there is no relative misalignment between the traction rope and the isolator 150. Since the open portion 152 can recover its deformation, it does not change the range of movement of the traction rope.

[0050] Compared to related technologies, the cable-passing structure disclosed in this application realizes the displacement of the traction rope by moving the isolator 150 and deforming the opening 152, thereby avoiding mutual wear between the traction rope and the isolator 150. This not only successfully achieves bending control of the curved section, but also avoids damage to the isolator 150, thus ensuring that the range of motion of the traction rope remains approximately unchanged during the long-term use of the endoscope, so as to always obtain high bending control accuracy.

[0051] In the embodiments of this application, the specific shape of the opening 152 is not limited, and it can be a closed annular structure.

[0052] In another embodiment, such as Figure 7 and Figure 8As shown, the opening 152 is an open annular structure. It can be understood that the opening 152 needs to be located on the side of the mounting base where the traction rope abuts when tensioned, in order to separate the traction rope from the edge of the cable hole 113.

[0053] With this structural layout, the bending performance of the opening 152 is significantly improved, making it easier for the opening 152 to deform and adhere to the outer wall of the mounting base under the pressure of the traction rope. Simultaneously, the optimized bending performance of the opening 152 reduces creases caused by the traction rope pressing against the mounting base, thus lowering the probability of deformation or damage to the opening 152 during multiple bending control operations and extending the service life of the separator 150.

[0054] like Figure 5 As shown, in some embodiments of this application, the thickness of the opening portion 152 is greater than the thickness of the sleeve portion 151.

[0055] It is understandable that the opening 152 needs to deform to achieve the displacement of the traction rope. However, after repeated deformation, it may exceed the elastic deformation limit and undergo plastic deformation, which may even directly lead to the damage of the opening 152. In the structural layout of this embodiment, the strength of the opening 152 in the separator 150 is significantly enhanced, thereby improving the performance of the opening 152 in resisting deformation or damage and extending its service life. At the same time, the increased strength also optimizes the performance of the opening 152 in resisting the wear of the traction rope.

[0056] Furthermore, such as Figure 5 As shown, in the direction away from the sleeve portion 151, the thickness of the open portion 152 first increases and then decreases. It can be understood that during the process of the open portion 152 being deformed by the pressure of the traction rope and adhering to the outer wall of the mounting base, the bending deformation of the central region of the open portion 152 is greater than that of the edge region. With this arrangement, the thickness of the central region of the open portion 152 is increased to improve the strength of the central region of the open portion 152, so as to prevent damage to the central region with a greater bending amplitude.

[0057] like Figure 10 As shown, in some embodiments of this application, a guide protrusion 151c is provided on one of the outer peripheral wall of the sleeve portion 151 and the wall of the wire passage hole 113, and a guide groove 115 is provided on the other. The guide groove 115 extends axially along the wire passage hole 113. It is understood that the embodiments of this application do not limit the specific arrangement of the guide protrusion 151c and the guide groove 115. Figure 10As shown, the guide protrusion 151c is provided on the sleeve portion 151, and the guide groove 115 is provided on the wall of the wire passage hole 113; or, the guide protrusion 151c is provided on the wall of the wire passage hole 113, and the guide groove 115 is provided on the sleeve portion 151.

[0058] In this structural layout, the guide groove 115 can not only guide the movement of the sleeve portion 151 along the axial direction of the wire passage hole 113, but also the guide protrusion 151c and the guide groove 115 can mutually limit each other in the circumferential direction of the sleeve portion 151 to prevent the sleeve portion 151 from rotating in the circumferential direction within the wire passage hole 113. This ensures that the isolator 150 can stably cooperate with the traction rope, thereby avoiding sudden changes in the bending section of the traction rope as it moves in the circumferential direction with the isolator 150.

[0059] like Figure 5 As shown, in some embodiments of this application, the surface of the opening 152 opposite to the mounting base is provided as a first arc surface 152a, and the mounting base is provided with a second arc surface 114 at the edge of the wire hole 113.

[0060] With this configuration, the first arc surface 152a and the second arc surface 114 are positioned opposite each other. When the traction rope is tensioned and presses against the open portion 152, the shapes of the first arc surface 152a and the second arc surface 114 are adapted to each other. This reduces the gap between the open portion 152 and the mounting base when they come into contact, which means that the contact area between the open portion 152 and the mounting base can be increased, thereby optimizing the stability of the fit between the open portion 152 and the mounting base.

[0061] At the same time, this structural layout can optimize the effect of the opening 152 in transmitting the pressure of the traction rope to the mounting base, and avoid stress concentration in the contact area between the mounting base and the opening 152, thereby avoiding stress damage to both. In particular, it can prevent excessive internal stress in the opening 152 that transmits the pressure of the traction rope from causing damage.

[0062] And / or, the opening surface of the opening portion 152 is provided as a third arc surface 152b.

[0063] It is understandable that when the traction rope is taut and presses against the open portion 152, it will deform according to the shape of the open surface. Precisely because the open surface is the third arc surface 152b, the traction rope can also be in a smooth bending posture. Compared with the scheme of making the traction rope bend due to the open surface with sharp edges, it is obviously possible to avoid damage to the traction rope due to bending.

[0064] Meanwhile, the third arc surface 152b makes the surface of the opening 152 smoothly transition. During the process of the traction rope abutting and being pulled against the opening surface, stress concentration in the contact area between the two can be avoided, thereby reducing wear between the traction rope and the opening 152. Since the bending control of the endoscope is achieved by pulling the traction rope, this layout can reduce the resistance encountered by the traction rope when pulling and make it easier to achieve bending control.

[0065] like Figure 9 As shown, in some embodiments of this application, the sleeve portion 151 includes a first tube body 151a and a second tube body 151b. The first tube body 151a and the second tube body 151b are fixedly connected at their opposite ends. One opening portion 152 is provided at the opposite end of the first tube body 151a relative to the second tube body 151b, and the other opening portion 152 is provided at the opposite end of the second tube body 151b relative to the first tube body 151a.

[0066] Under this structural layout, the first tube 151a and the second tube 151b are components of the sleeve portion 151. They can also move within the wire passage hole 113. The two open portions 152 can be matched with the outer wall of the mounting base for limiting. The fixed connection of the first tube 151a and the second tube 151b also limits each other, thereby preventing the first tube 151a and the second tube 151b from detaching from the wire passage hole 113.

[0067] Meanwhile, the opposite ends of the first tube 151a and the second tube 151b can be assembled by mating. In the specific assembly process, the first tube 151a can be assembled through one of the openings of the wire hole 113 (e.g., Figure 9 The second tube 151b can be inserted through another opening of the wire through hole 113 (e.g., the proximal orifice 113a) and can be inserted through another opening of the wire through hole 113 (e.g., the proximal orifice 113a). Figure 9 The distal end of the hole 113b) extends into the hole, and the opposite ends of the two are fixedly connected in the wire hole 113. This facilitates the installation of the isolation component 150 in the wire hole 113, thereby improving the ease of installation and removal of the isolation component 150.

[0068] In an embodiment where the isolation member 150 is an integral component, the isolation member 150 can be installed by deforming the open portion 152 to pass through the wire hole 113; or, the side of the mounting base is provided with an installation channel communicating with the wire hole 113, the installation channel allowing the sleeve portion 151 to pass through and engage with the open portion 152 for limiting cooperation, thereby assembling the isolation member 150 into the wire hole 113 from the side through the installation channel.

[0069] In some embodiments of this application, the coefficient of friction of the surface of the isolator 150 is less than the coefficient of friction of the surface of the area where the wire hole 113 is located in the mounting base.

[0070] With this configuration, the frictional resistance exerted by the isolator 150 on the traction rope is smaller. When the traction rope is tensioned and comes into contact with the isolator 150 while continuing to be pulled, it is easier for the traction rope and the isolator 150 to slide relative to each other, which reduces mutual wear and facilitates bending control. Of course, the coefficient of friction of the isolator 150 surface needs to be configured to ensure that the traction rope can move the isolator 150 through friction and deform the opening 152 to adhere to the mounting base. After the above process, it is allowed to move relative to the traction rope to achieve continued pulling of the traction rope.

[0071] like Figures 1-10 As shown, embodiments of this application also provide a handle component 100, which includes the wire guide structure mentioned in any of the foregoing solutions, thus enabling the handle component 100 to possess the beneficial effects of the aforementioned wire guide structure, which will not be elaborated further here.

[0072] like Figures 1-3 As shown, the handle component 100 can be a disposable section, and the mounting base can be the housing 110 of the disposable section; or, the handle component 100 can be a reusable section, and the mounting base can be the housing of the reusable section.

[0073] Next, the concept of this application will be described using an embodiment in which the handle component 100 is a disposable segment.

[0074] like Figures 1-3 As shown, the disposable section may include a transmission member 140, which is movably disposed on the proximal end face 111 of the housing 110. The first traction rope 120 and the second traction rope 130 pass through the cable hole 113 through the inner cavity 112 of the housing 110, and their proximal ends are connected to the transmission member 140. After the reusable section and the disposable section are docked, the drive mechanism in the reusable section can drive the transmission member 140 to move, thereby tensioning or loosening each traction rope.

[0075] During the process of pulling the first traction rope 120 or the second traction rope 130 through the transmission component 140, the traction rope will gradually tighten and come into contact with the isolation component 150, and drive the isolation component 150 to move from the distal end opening 113b side of the wire passage hole 113 towards its proximal end opening 113a side, until the open portion 152 located on the distal end opening 113b side of the wire passage hole 113 comes into contact with the housing 110; if the traction rope is pulled further, the traction rope will continue to tighten and press against the open portion 152 located on the proximal end opening 113a side of the wire passage hole 113, and press the open portion 152 against and attach it to the outer wall of the housing 110. The open portion 152 releases the tightening action of the traction rope by deforming.

[0076] like Figure 2 and Figure 3 As shown, in the above embodiment, when the transmission member 140 moves downward, it pulls the first traction rope 120 and loosens the second traction rope 130; when the transmission member 140 moves upward, it pulls the second traction rope 130 and loosens the first traction rope 120.

[0077] As can be seen from the above, in the handle component 100 disclosed in this application embodiment, the displacement of the traction rope can be achieved by the movement of the isolator 150 and the deformation of the opening 152, thereby avoiding mutual wear between the traction rope and the isolator 150. This not only achieves smooth bending control of the bending section, but also avoids damage to the isolator 150, thereby ensuring that the range of movement of the traction rope remains approximately unchanged during the long-term use of the endoscope, so as to always obtain high bending control accuracy.

[0078] Embodiments of this application also provide a handle that includes the wire-passing structure mentioned in any of the foregoing solutions, thus enabling the handle to possess the beneficial effects of the aforementioned wire-passing structure, which will not be elaborated further here.

[0079] Embodiments of this application also provide an endoscope, which includes an insertion portion 200 and the aforementioned handle, the endoscope having the beneficial effects of the aforementioned handle. The handle is connected to the insertion portion 200, and the operator can control the bending segment of the insertion portion 200 by manipulating the handle to achieve bending movements.

[0080] The endoscopes used in this application can be bronchoscopes, pyeloscopes, esophagoscopes, gastroscopes, colonoscopes, otoscopes, rhinoscopes, oral endoscopes, laryngoscopes, colposcopes, laparoscopes, arthroscopes, etc. This application does not impose specific limitations on the types of endoscopes.

[0081] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be described in detail here.

[0082] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A wire-passing structure for use in an endoscope, characterized in that, The wiring structure includes a mounting base and an isolation component, wherein: The mounting base has a wire-passing hole. The isolation member includes a sleeve for accommodating the traction rope and two open portions respectively connected to both ends of the sleeve. The sleeve is movably disposed in the wire-passing hole, and the open portions are disposed at the opening of the wire-passing hole. The open portions are bent outward along the radial direction of the isolation member and are spaced apart from the outer wall of the mounting base. The open portions can deform under the pressure of the traction rope and adhere to the outer wall of the mounting base.

2. The wire-passing structure according to claim 1, characterized in that, The opening is an open ring structure.

3. The wire guide structure according to claim 1, characterized in that, The thickness of the open portion is greater than the thickness of the sleeve portion.

4. The wire-passing structure according to claim 1, characterized in that, In the outer peripheral wall of the sleeve and the wall of the wire passage hole, one is provided with a guide protrusion and the other is provided with a guide groove, the guide groove being arranged to extend along the axial direction of the wire passage hole.

5. The wire guide structure according to any one of claims 1 to 4, characterized in that, The surface of the open portion opposite to the mounting base is provided with a first arc surface, and the mounting base is provided with a second arc surface at the edge of the wire hole; And / or, the opening surface of the opening portion is provided as a third arc surface.

6. The wire guide structure according to any one of claims 1 to 4, characterized in that, The sleeve includes a first tube and a second tube, which are fixedly connected at their opposite ends. One of the openings is located at the opposite end of the first tube relative to the second tube, and the other opening is located at the opposite end of the second tube relative to the first tube.

7. The wire guide structure according to any one of claims 1 to 4, characterized in that, The coefficient of friction of the surface of the isolator is less than the coefficient of friction of the surface of the area where the wire hole is located in the mounting base.

8. A handle component, characterized in that, Includes the thread-passing structure as described in any one of claims 1 to 7; the handle component is a disposable or reusable section of an endoscope.

9. A handle, characterized in that, The wiring structure includes any one of claims 1 to 7.

10. An endoscope, characterized in that, It includes an insertion part and a handle as described in claim 9, wherein the handle is connected to the insertion part.

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