Endoscope traction cable fixing structure and endoscope

Abstract

The utility model relates to an endoscope traction cable fixing structure and an endoscope. The fixing structure comprises a reel, a traction cable and a fastener; the traction cable comprises a first cable and a second cable, a first end, far away from the insertion part, of the first cable and a second end, far away from the insertion part, of the second cable are wound on the reel in opposite directions, and the first end and the second end partially coincide; the fastener is connected with the overlapping area of the first end and the second end and connected with the reel so that the first end and the second end can be fixed to the reel. Wherein the first end and the second end are respectively tensioned through the special tensioning jig, the tension value displayed on the special tensioning jig ensures that the tensioning force of the first cable and the tensioning force of the second cable are consistent, and the first cable and the second cable can be made to be the same in tightness degree through connection of the fastener and the overlapping area of the first end and the second end. Therefore, when the reel rotates in the forward direction and the reverse direction around the axial direction of the reel, the bending angle of the insertion part is controlled to be consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an endoscope traction cable fixing structure and an endoscope. Background Art

[0002] An endoscope is a commonly used instrument in clinical medical diagnosis and treatment. Generally, it includes an insertion part for inserting into the human body, a connection part for connecting to a main unit, and an operation part for manual control operation. Most of the existing operation parts include a handle, a rotating wheel installed on the handle, and two traction cables installed on the rotating wheel. The rotating wheel is connected to both sides of the insertion part through the two traction cables, so that when the rotating wheel rotates, it can drive the two traction cables to adjust the bending angle of the end of the insertion part, thereby realizing the diagnosis and examination of the endoscope in different directions and regions within human tissues. However, since the two traction cables independently complete the pulling work on both sides of the insertion part, the two traction cables are likely to have inconsistent tightness, thus affecting the adjustment effect of the bending angle of the end of the insertion part. Summary of the Utility Model

[0003] Based on this, in view of the technical problem that the two traction cables are likely to have inconsistent tightness, thus affecting the adjustment effect of the bending angle of the end of the insertion part, it is necessary to provide an endoscope traction cable fixing structure.

[0004] An endoscope traction cable fixing structure includes:

[0005] A winding wheel;

[0006] A traction cable, including a first cable and a second cable. The first end of the first cable away from the insertion part and the second end of the second cable away from the insertion part are wound around the winding wheel in opposite directions, and the first end and the second end partially overlap; and

[0007] A fastener, which is connected to the overlapping area of the first end and the second end and is connected to the winding wheel to fix the first end and the second end on the winding wheel.

[0008] In one embodiment, the fastener includes a fastening block and a fastening column. The fastening block is connected to the winding wheel, and the fastening block is provided with a through hole and a fastening hole that communicate with each other. The first end and the second end partially overlap and pass through the through hole and extend outside the through hole. The fastening column passes through the fastening hole and abuts against the overlapping area of the first end and the second end and is connected to the fastening block to fix the first end and the second end on the fastening block.

[0009] In one embodiment, the winding wheel is provided with a mounting groove, the notch of the mounting groove faces one axial side of the winding wheel, the mounting groove has an opening, the opening is arranged on the wheel wall of the winding wheel, the fastening block is in plug-in fit with the mounting groove, and the first end and the second end extend into the mounting groove through the opening.

[0010] In one embodiment, the mounting groove extends along the circumferential direction of the winding wheel, the mounting groove has two openings, the two openings are respectively arranged at both ends of the mounting groove, and the first end and the second end respectively extend into the through hole from opposite ends of the fastening block through the two openings.

[0011] In one embodiment, the mounting groove includes a first groove section and a second groove section that communicate with each other. The first groove section is provided with the second groove section at both circumferential ends of the winding wheel. The two openings are respectively arranged at one ends of the two second groove sections away from the first groove section. The fastening block is accommodated in the first groove section, and the parts of the first end and the second end extending out of the through hole are respectively accommodated in the two second groove sections.

[0012] In one embodiment, the width of the first groove section is greater than the width of the second groove section to form two limiting walls spaced along the circumferential direction of the winding wheel. The fastening block is plugged in the first groove section, the width of the fastening block is greater than the width of the second groove section, and the two limiting walls respectively abut against both ends of the fastening block.

[0013] In one embodiment, a groove is arranged on the wheel wall of the winding wheel along its circumferential direction, the opening is arranged on the groove wall of the groove, and the first end and the second end are wound around the groove.

[0014] In one embodiment, the number of the grooves is two, the two grooves are arranged along the axial direction of the winding wheel, and the first end and the second end respectively surround the two grooves.

[0015] In one embodiment, the fastener is located at one end of the winding wheel close to the insertion part.

[0016] The present utility model also provides an endoscope, which can solve at least one of the above technical problems.

[0017] An endoscope includes the above endoscopic traction cable fixing structure.

[0018] Beneficial effects:

[0019] The fixed structure of the endoscope traction cable provided by the embodiment of the utility model comprises a wire winding wheel, a traction cable and a fastener; the traction cable comprises a first cable and a second cable, the first end of the first cable far away from the insertion part and the second end of the second cable far away from the insertion part are wound around the wire winding wheel in opposite directions, and the first end and the second end partially overlap; the fastener is connected with the overlapping area of the first end and the second end and is connected with the wire winding wheel to fix the first end and the second end on the wire winding wheel. In this application, the first end of the first cable far away from the insertion part and the second end of the second cable far away from the insertion part are wound around the wire winding wheel in opposite directions. By connecting the fastener with the overlapping area of the first end and the second end and connecting with the wire winding wheel, the first end and the second end can be fixed on the wire winding wheel to realize the fixation of the traction cable. Among them, the first end and the second end are respectively tightened by a special tightening jig, and the tension values displayed on the special tightening jig ensure that the tightening forces of the first cable and the second cable are consistent. By connecting the fastener with the overlapping area of the first end and the second end, the tightness of the first cable and the second cable can be made the same, so that when the wire winding wheel rotates forward and backward around its own axis, the bending angle control degree of the insertion part is consistent.

[0020] The utility model also provides an endoscope, comprising the above-mentioned fixed structure of the endoscope traction cable, and the endoscope can achieve at least one of the above technical effects. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the fixed structure of the endoscope traction cable provided by an embodiment of the utility model.

[0022] Figure 2 It is an exploded view of the fixed structure of the endoscope traction cable provided by an embodiment of the utility model.

[0023] Figure 3 It is a top view of the fixed structure of the endoscope traction cable provided by an embodiment of the utility model.

[0024] Figure 4 It is a side view of the fixed structure of the endoscope traction cable provided by an embodiment of the utility model.

[0025] Reference Signs in the Drawings:

[0026] 100 - wire winding wheel; 110 - mounting groove; 120 - notch; 121 - first groove section; 122 - second groove section; 123 - limiting wall; 130 - opening; 140 - groove; 200 - traction cable; 210 - first cable; 211 - first end; 220 - second cable; 221 - second end; 300 - fastener; 310 - fastening block; 320 - fastening post; 330 - through hole; 340 - fastening hole. Detailed Embodiment

[0027] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following detailed description of the specific embodiments of the present utility model will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0033] Refer to Figure 1 and Figure 2 , Figure 1 is a schematic diagram of a fixing structure for an endoscope traction cable provided by an embodiment of the present utility model. Figure 2 is an exploded view of a fixing structure for an endoscope traction cable provided by an embodiment of the present utility model. An embodiment of the present utility model provides a fixing structure for an endoscope traction cable, including a wire winding wheel 100, a traction cable 200 and a fastener 300; the traction cable 200 includes a first cable 210 and a second cable 220. The first end 211 of the first cable 210 far from the insertion part and the second end 221 of the second cable 220 far from the insertion part are wound around the wire winding wheel 100 in opposite directions, and the first end 211 and the second end 221 partially overlap; the fastener 300 is connected to the overlapping area of the first end 211 and the second end 221 and is connected to the wire winding wheel 100 to fix the first end 211 and the second end 221 on the wire winding wheel 100.

[0034] Specifically, in the present application, the first end 211 of the first cable 210 away from the insertion part and the second end 221 of the second cable 220 away from the insertion part are wound around the reel 100 in opposite directions, and are connected to the overlapping area of the first end 211 and the second end 221 through the fastener 300, and are connected to the reel 100, so that the first end 211 and the second end 221 can be fixed on the reel 100 to achieve the fixation of the traction cable 200. Among them, the first end 211 and the second end 221 are tightened respectively by a special tightening fixture, and the tension value displayed on the special tightening fixture ensures that the tension of the first cable 210 and the second cable 220 is consistent, and the fastener 300 is connected to the overlapping area of the first end 211 and the second end 221, so that the first cable 210 and the second cable 220 can have the same degree of tightness, so that the reel 100 can control the bending angle of the insertion part in a consistent manner when rotating forward and reversely around its own axis.

[0035] It should be noted that the instructions are attached Figure 1 Taking an example to illustrate, when the winding wheel 100 rotates in a clockwise direction, it can apply tension to the first cable 210, and when the winding wheel 100 rotates in a counterclockwise direction, it can apply tension to the second cable 220. Since the first cable 210 and the second cable 220 have the same tightness, when the winding wheel 100 rotates clockwise and counterclockwise at the same angle, the forces applied to the first cable 210 and the second cable 220 are the same, so that the first cable 210 and the second cable 220 apply the same force to the insertion portion, and thus the degree of control over the bending angle of the insertion portion is consistent, thereby improving the accuracy of controlling the bending angle of the insertion portion.

[0036] See also Figure 1 and Figure 2 In one embodiment, the fastener 300 includes a fastening block 310 and a fastening column 320. The fastening block 310 is connected to the winding wheel 100, and a communicating through hole 330 and a fastening hole 340 are provided on the fastening block 310. The first end 211 and the second end 221 are partially overlapped and penetrated through the through hole 330 and extend out of the through hole 330. The fastening column 320 is penetrated in the fastening hole 340, and abuts against the overlapping area of the first end 211 and the second end 221, and is connected to the fastening block 310 to fix the first end 211 and the second end 221 to the fastening block 310.

[0037] Specifically, when both the first end 211 and the second end 221 are inserted through the through hole 330 and partially extend outside the through hole 330, the portions of the first end 211 and the second end 221 extending outside the through hole 330 can be respectively tightened by a special tightening jig, and when the tension values displayed on the special tightening jig ensure that the tightening forces of the first cable 210 and the second cable 220 are the same, the first end 211 and the second end 221 are pressed against the fastening block 310 by the fastening post 320, so that the tightness of the first cable 210 and the second cable 220 can be ensured to be the same, and the first cable 210 and the second cable 220 are prevented from moving around, resulting in a difference in the tightness of the first cable 210 and the second cable 220, thereby improving the reliability of the endoscope traction cable fixing structure.

[0038] Further, the fastening post 320 is threadedly connected to the inner wall of the fastening hole 340, which facilitates the installation and disassembly of the fastening post 320 relative to the fastening block 310. Wherein, the number of the fastening posts 320 can be two or more, and the fastening posts 320 are arranged at intervals along the extending direction of the through hole 330 to improve the stability of the connection between the first end 211 and the second end 221 and the fastener 300. Preferably, the number of the fastening posts 320 is two.

[0039] Refer to Figure 1 and Figure 2 In one embodiment, an installation groove 110 is provided on the winding wheel 100. The notch 120 of the installation groove 110 faces one side in the axial direction of the winding wheel 100. The installation groove 110 has an opening 130, and the opening 130 is provided on the wheel wall of the winding wheel 100. The fastening block 310 is in plug-in fit with the installation groove 110, and the first end 211 and the second end 221 extend into the installation groove 110 through the opening 130.

[0040] Specifically, when the fastener 300 is arranged in the installation groove 110, during the rotation of the winding wheel 100 around its own axis, interference with the first cable 210 and the second cable 220 wound around the winding wheel 100 can be reduced. The fastening block 310 is in plug-in fit with the installation groove 110, so that the fastening block 310 has freedom only in the plugging direction with the installation groove 110. Since the notch 120 of the installation groove 110 faces one side in the axial direction of the winding wheel 100, the plugging direction of the fastening block 310 and the installation groove 110 is parallel to the axial direction of the winding wheel 100, that is, the fastening block 310 has freedom only in the axial direction of the winding wheel 100, and the pulling directions of the first cable 210 and the second cable 220 on the fastening block 310 are perpendicular to the axial direction of the winding wheel 100, thereby enabling the fastening block 310 to be stably connected to the winding wheel 100.

[0041] Further, the fastening block 310 is bonded to the inner wall of the installation groove 110, which further improves the stability of the connection between the fastening block 310 and the winding wheel 100.

[0042] Refer to Figure 1 , Figure 2 and Figure 3 , Figure 3 is a top view of the endoscope traction cable fixing structure provided by an embodiment of the present invention. In one embodiment, the installation groove 110 extends along the circumferential direction of the winding wheel 100. The installation groove 110 has two openings 130, and the two openings 130 are respectively arranged at both ends of the installation groove 11. The first end 211 and the second end 221 respectively extend into the through hole 330 from opposite ends of the fastening block 310 through the two openings 130.

[0043] Specifically, the two openings 130 are arranged on the wheel wall of the winding wheel 100 and are located at both ends of the installation groove 110 in the circumferential direction of the winding wheel 100, so that the first end 211 and the second end 221 surrounding the wheel wall of the winding wheel 100 respectively extend into the installation groove 110 through the two openings 130 and extend into the through hole 330 through opposite ends of the fastening block 310, thereby being able to reduce the bending degree of the first end 211 and the second end 221, avoid stress concentration of the first cable 210 and the second cable 220 during the stress process, and improve the service life.

[0044] Refer to Figure 1 , Figure 2 and Figure 3 , in one embodiment, the installation groove 110 includes a first groove section 121 and a second groove section 122 that communicate with each other. The first groove section 121 is provided with second groove sections 122 at both ends in the circumferential direction of the winding wheel 100. The two openings 130 are respectively arranged at one end of the two second groove sections 122 away from the first groove section 121. The fastening block 310 is accommodated in the first groove section 121, and the parts of the first end 211 and the second end 221 extending out of the through hole 330 are respectively accommodated in the two second groove sections 122.

[0045] Specifically, the arrangement that the first groove section 121 is provided with second groove sections 122 at both ends in the circumferential direction of the winding wheel 100 enables the parts of the first end 211 and the second end 221 extending out of the through hole 330 to be accommodated in the two second groove sections 122, thereby playing a protective role. At the same time, it enables the parts of the first end 211 and the second end 221 extending out of the through hole 330 to extend out of the installation groove 110, so as to facilitate tightening the first end 211 and the second end 221 through a special tightening tool to realize the adjustment of the tightness.

[0046] Refer to Figure 1 , Figure 2 and Figure 3, in one embodiment, the width of the first groove section 121 is greater than that of the second groove section 122 to form two limiting walls 123 spaced circumferentially along the winding wheel 100. The fastening block 310 is inserted into the first groove section 121. The width of the fastening block is greater than that of the second groove section 122. The two limiting walls 123 respectively abut against both ends of the fastening block 310, thereby stably restricting the circumferential movement of the fastening block 310 along the mounting groove 110, so that the fastening block 310 and the mounting groove 110 are stably inserted and matched.

[0047] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 4 is a side view of the endoscope traction cable fixing structure provided by an embodiment of the present utility model. In one embodiment, a groove 140 is provided on the wheel wall of the winding wheel 100 and is arranged circumferentially around it. The opening 130 is provided on the groove wall of the groove 140. The first end 211 and the second end 221 are wound around the groove 140.

[0048] Specifically, the first end 211 of the first cable 210 and the second end 221 of the second cable 220 are both wound around the groove 140. Thus, when the winding wheel 100 rotates around its own axis, it can play a guiding role for the first cable 210 and the second cable 220, so that the first cable 210 and the second cable 220 are stably wound around the winding wheel 100.

[0049] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , in one embodiment, the number of the grooves 140 is two. The two grooves 140 are arranged axially along the winding wheel 100. The first end 211 and the second end 221 are respectively wound around the two grooves 140. Thus, when the winding wheel 100 rotates around its own axis, interference between the first cable 210 and the second cable 220 can be avoided, and the reliability of the endoscope traction cable fixing structure is improved.

[0050] Furthermore, the two openings 130 are respectively arranged on the bottom walls of the two grooves 140 and extend towards the groove side walls of the corresponding grooves 140 to communicate with the notch 120 of the second groove section 122, so as to facilitate the first end 211 and the second end 221 to extend into the corresponding second groove section 122 from the corresponding openings 130, and the installation efficiency is improved.

[0051] Refer to Figure 1 , Figure 2 and Figure 3, in one embodiment, the fastener 300 is located at one end of the wire winding wheel 100 close to the insertion portion, that is, the first groove section 121 is arranged at one end close to the insertion portion, so that the length between the starting point of the winding of the first end 211 and the second end 221 around the wire winding wheel 100 and the fastening block 310 is greater than half of the circumference of the wire winding wheel 100. Thus, when the wire winding wheel 100 rotates around its own axis to tighten the first cable 210 or the second cable 220, it can avoid the reverse winding of the second cable 220 or the first cable 210 around the wire winding wheel 100.

[0052] Further, the first groove section 121 is arranged at the middle position between the starting point of the winding of the first end 211 around the wire winding wheel 100 and the starting point of the winding of the second end 221 around the wire winding wheel 100.

[0053] The embodiment of the present application also provides an endoscope, including the above-mentioned endoscope traction cable fixing structure. In the present application, the first end 211 of the first cable 210 far from the insertion portion and the second end 221 of the second cable 220 far from the insertion portion are wound around the wire winding wheel 100 in opposite directions, and are connected to the overlapping area of the first end 211 and the second end 221 through the fastener 300 and are connected to the wire winding wheel 100, so that the first end 211 and the second end 221 can be fixed on the wire winding wheel 100 to realize the fixation of the traction cable 200. Among them, the first end 211 and the second end 221 are respectively tightened by a special tightening jig, and the tensile force values displayed on the special tightening jig ensure that the tightening forces of the first cable 210 and the second cable 220 are consistent, and by connecting the fastener 300 to the overlapping area of the first end 211 and the second end 221, the tightness of the first cable 210 and the second cable 220 can be made the same, so that when the wire winding wheel 100 rotates around its own axis in the forward and reverse directions, the bending angle control degree of the insertion portion is consistent.

[0054] The technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0055] The above-mentioned embodiments only express several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. An endoscope traction cable fixing structure, characterized in that, The endoscopic traction cable fixing structure includes: A wire reel; A traction cable, including a first cable and a second cable. The first end of the first cable away from the insertion part and the second end of the second cable away from the insertion part are wound around the wire reel in opposite directions, and the first end and the second end partially overlap; and, A fastener, which is connected to the overlapping area of the first end and the second end and is connected to the wire reel to fix the first end and the second end to the wire reel.

2. The endoscopic traction cable fixing structure according to claim 1, wherein, The fastener includes a fastening block and a fastening column. The fastening block is connected to the wire reel, and the fastening block is provided with a through hole and a fastening hole that communicate with each other. The first end and the second end partially overlap and pass through the through hole and extend out of the through hole. The fastening column passes through the fastening hole and abuts against the overlapping area of the first end and the second end and is connected to the fastening block to fix the first end and the second end to the fastening block.

3. The endoscopic traction cable fixing structure according to claim 2, characterized in that, An installation groove is provided on the wire reel. The notch of the installation groove faces one side of the axial direction of the wire reel. The installation groove has an opening, and the opening is arranged on the wheel wall of the wire reel. The fastening block is in plug-in fit with the installation groove, and the first end and the second end extend into the installation groove through the opening.

4. The endoscopic traction cable fixing structure according to claim 3, wherein, The installation groove extends along the circumferential direction of the wire reel. The installation groove has two openings, and the two openings are respectively arranged at both ends of the installation groove. The first end and the second end respectively extend into the through hole from the opposite ends of the fastening block through the two openings.

5. The endoscopic traction cable fixing structure according to claim 4, characterized in that, The installation groove includes a first groove section and a second groove section that communicate with each other. The first groove section is provided with the second groove section at both circumferential ends of the wire reel. The two openings are respectively arranged at one end of the two second groove sections away from the first groove section. The fastening block is accommodated in the first groove section, and the part of the first end extending out of the through hole and the part of the second end extending out of the through hole are respectively accommodated in the two second groove sections.

6. The endoscopic traction cable fixing structure according to claim 5, characterized in that, The width of the first groove section is greater than the width of the second groove section to form two limiting walls spaced along the circumferential direction of the wire reel. The fastening block is inserted into the first groove section, and the width of the fastening block is greater than the width of the second groove section. The two limiting walls respectively abut against both ends of the fastening block.

7. The endoscopic traction cable fixing structure according to claim 3, wherein, A groove is provided on the wheel wall of the wire reel and is arranged along its circumferential direction. The opening is arranged on the groove wall of the groove. The first end and the second end are wound around the groove.

8. The endoscopic traction cable fixing structure according to claim 7, wherein, The number of the grooves is two, and the two grooves are arranged axially along the wire reel. The first end and the second end are respectively wound around the two grooves.

9. The endoscopic traction cable fixing structure according to any one of claims 1-8, characterized in that, The fastener is located at one end of the wire reel close to the insertion part.

10. An endoscope, characterized in that, It includes the endoscopic traction cable fixing structure according to any one of claims 1-9.

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