Traction rope far-end fixing structure, insertion part and endoscope

Abstract

The utility model discloses a traction rope far-end fixing structure, an insertion part and an endoscope, and relates to the technical field of medical instruments. The traction rope far-end fixing structure is applied to an endoscope and comprises a fixing groove, the fixing groove is used for containing the far end of a traction rope, the fixing groove is fixedly connected with the far end of the traction rope, and the fixing groove is located on the outer surface of the tail section snake bone of an active bending section. The fixing groove extends from the near end of the tail section of snake bone to the far end of the tail section of snake bone; or the fixing groove is positioned on the outer surface of the lens seat and extends from the near end of the lens seat to the far end of the lens seat. The traction rope far-end fixing structure has the advantages that the tail end of the traction rope is easy to position, the welding operation difficulty of the tail end of the traction rope and the fixing groove is reduced, the welding reliability of the tail end of the traction rope and the fixing groove is improved, and burrs at welding spots are easy to polish.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a traction rope distal end fixing structure, an insertion part and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device that can directly enter the natural cavity of the human body for inspection and provide doctors with sufficient diagnostic information. An endoscope usually includes: an insertion part for inserting into the human body, a handle for controlling the bending of the front end of the insertion part, and a display device for displaying the internal environment of the natural cavity of the human body; the cooperation of the above three parts can realize the internal observation of the human body, the exploration of lesions and the treatment.

[0003] The distal end of the insertion part is the active bending section, and a traction rope is arranged in the handle. The distal end of the traction rope is fixedly connected to the active bending section or the lens mount located at the distal end of the active bending section. The proximal end of the traction rope is wound around the dial wheel. The traction rope is in a taut state. By turning the dial wheel, the traction rope can be synchronously moved in different directions, thereby making the active bending section bend, so that the camera module can shoot different positions inside the body.

[0004] In the related art, a welding part is provided on the inner side of the last snake bone of the active bending section or the inner side of the lens seat, and the distal end of the traction rope is inserted into the welding part, and then the distal end of the traction rope is welded to the welding part, so as to fix the distal end of the traction rope. However, the inventors found that the welding part is located on the inner side of the last snake bone of the active bending section or the inner side of the lens seat. Due to the small radial dimension of the insertion part, the internal space of the snake bone or the lens seat is limited, and the operation is difficult during welding; on the other hand, the welding part is usually only located at the proximal end of the last snake bone of the active bending section or the proximal end of the lens seat, and the length of the distal end of the traction rope extending into the welding part is short, and there are fewer welding points between the distal end of the traction rope and the welding part, resulting in poor reliability of welding between the distal end of the traction rope and the insertion part, and the risk of the distal end of the traction rope falling off.

[0005] Therefore, providing an insertion portion with low difficulty in fixing the distal end of a traction rope and high reliability has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0006] The utility model discloses a traction rope distal end fixing structure, an insertion part and an endoscope, so as to solve the technical problems of great fixing difficulty and poor fixing reliability when the traction rope distal end is fixed in the related technology.

[0007] In order to solve the above problems, the utility model adopts the following technical solutions:

[0008] A first aspect of the utility model provides a traction rope distal end fixing structure.

[0009] The distal end fixing structure of the traction rope of the utility model is applied to an endoscope, and the distal end fixing structure of the traction rope includes a fixing groove, and the fixing groove is used to accommodate the distal end of the traction rope. The fixing groove is fixedly connected to the distal end of the traction rope, and the fixing groove is located on the outer surface of the terminal snake bone of the active bending section, and the fixing groove extends from the proximal end of the terminal snake bone to the distal end of the terminal snake bone; or the fixing groove is located on the outer surface of the lens mount, and the fixing groove extends from the proximal end of the lens mount to the distal end of the lens mount.

[0010] Furthermore, the fixing groove is recessed from the outer surface of the distal snake bone to the center of the distal snake bone; or the fixing groove is recessed from the outer surface of the lens mount to the center of the lens mount.

[0011] Furthermore, the recessed depth of the fixing groove is greater than the diameter of the traction rope, and the traction ropes fixed on the insertion part are located on the same straight line.

[0012] Furthermore, the bottom of the fixing groove passes through the wall surface of the distal snake bone or the wall surface of the lens mount, and forms a first notch at the bottom of the fixing groove.

[0013] Furthermore, the width of the first notch is less than or equal to the diameter of the traction rope.

[0014] Furthermore, when the fixing groove is located on the terminal serpentine bone, the distance between the distal end face of the fixing groove and the proximal end face of the terminal serpentine bone is smaller than the distance between the distal end face of the terminal serpentine bone and the proximal end face of the terminal serpentine bone, and a gap is formed between the distal end face of the fixing groove and the distal end face of the terminal serpentine bone.

[0015] Furthermore, when the fixing groove is located on the terminal serpentine bone, a second gap is provided between the proximal end surface of the fixing groove and the terminal serpentine bone.

[0016] Furthermore, the width of the second notch along the circumferential direction of the terminal serpentine is greater than the width of the fixing groove along the circumferential direction of the terminal serpentine.

[0017] A second aspect of the present invention provides an insertion portion.

[0018] The insertion part of the utility model comprises an active bending section, a lens mount and a passive bending section, wherein the active bending section is connected to the distal end of the passive bending section, and the lens mount is installed at the distal end of the active bending section, wherein a traction rope distal end fixing structure is provided on the active bending section or the lens mount, and the traction rope distal end fixing structure is the traction rope distal end fixing structure described in any one of the technical solutions in the utility model.

[0019] A third aspect of the utility model provides an endoscope.

[0020] The endoscope of the utility model comprises an insertion part, a handle and a display device, wherein the insertion part is the insertion part described in any technical solution of the utility model, the insertion part is connected to the handle, and the handle is also connected to the display device.

[0021] The technical solution adopted by the utility model can achieve the following beneficial effects:

[0022] In the first aspect, the distal end fixing structure of the traction rope of the utility model includes a fixing groove, which is located on the outer surface of the distal segment of the serpentine bone or the outer surface of the lens seat. Since the space on the outer surface of the distal segment of the serpentine bone or the outer surface of the lens seat is large, the difficulty of operation when welding the end of the traction rope and the fixing groove can be reduced; in the second aspect, the fixing groove is located on the outer surface of the distal segment of the serpentine bone or the outer surface of the lens seat, and the fixing groove can extend from the proximal end of the distal segment of the serpentine bone to the distal end, or from the proximal end of the lens seat to the distal end, so that the length of the fixing groove along the axial direction of the insertion part can be set to be longer, which can facilitate the positioning of the end of the traction rope, and can also increase the number of welding points between the end of the traction rope and the fixing groove, thereby increasing the length of the traction rope welded with the fixing groove and improving the reliability of the connection between the end of the traction rope and the fixing groove; in the third aspect, the fixing groove is located on the outer surface of the distal segment of the serpentine bone or the outer surface of the lens seat, so that the welding point when the end of the traction rope is welded to the fixing groove is also located on the outer surface of the distal segment of the serpentine bone or the outer surface of the lens seat, which can facilitate the grinding of burrs at the welding point, and can also avoid the welding point being too large and occupying the internal space of the insertion part.

[0023] That is, the far-end fixing structure of the traction rope of the utility model has the advantages of easy positioning of the end of the traction rope, reduced difficulty in welding the end of the traction rope and the fixing groove, improved reliability of welding the end of the traction rope and the fixing groove, and easy grinding of burrs at the welding point, which solves the technical problems of great difficulty and poor fixing reliability when fixing the far-end of the traction rope in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic diagram of an embodiment of the present application in which the lens mount is assembled at the far end of the active bending section;

[0026] Figure 2 yes Figure 1 Exploded diagram of

[0027] Figure 3is a first partial schematic diagram of the insertion portion of the first embodiment of the present application;

[0028] Figure 4 It is a schematic diagram of the last segment of the snake bone of the first embodiment of the present application;

[0029] Figure 5 yes Figure 4 A magnified view of part A;

[0030] Figure 6 is a second partial schematic diagram of the insertion portion of the first embodiment of the present application;

[0031] Figure 7 It is a partial schematic diagram of the insertion portion of the second embodiment of the present application;

[0032] Figure 8 It is a schematic diagram of the last segment of the snake bone of the second embodiment of the present application;

[0033] Fig. 9 yes Figure 8 A magnified view of part B;

[0034] Fig.10 It is a partial schematic diagram of the insertion portion of the third embodiment of the present application;

[0035] Fig.11 It is a schematic diagram of the last segment of the snake bone of the third embodiment of the present application;

[0036] Fig.12 yes Fig.11 Enlarged view of part C;

[0037] Fig.13 It is a schematic diagram of an endoscope according to an embodiment of the present application.

[0038] In the figure: 110, fixing groove; 111, first notch; 112, notch; 113, second notch; 114, first end face; 200, traction rope; 300, insertion part; 310, active bending section; 311, distal snake bone; 312, groove; 313, second end face; 320, lens mount; 321, positioning groove; 322, camera module; 323, instrument tube; 330, passive bending section; 400, handle. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0040] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0041] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0042] In the related art, a welding part is provided on the inner side of the last snake bone of the active bending section or the inner side of the lens seat, and the distal end of the traction rope is inserted into the welding part, and then the distal end of the traction rope is welded to the welding part. Since the welding part is located on the inner side of the last snake bone or the inner side of the lens seat, in order to facilitate the welding operation, the length of the welding part along the axial direction of the insertion part is usually set shorter, and the traction rope usually only has a welding point at the entrance of the welding part, which not only makes the welding of the end of the traction rope difficult, but also the reliability of the welding between the distal end of the traction rope and the insertion part is poor.

[0043] To this end, the present application provides a distal end fixing structure of a traction rope, which includes a fixing groove, which is located on the outer surface of the terminal snake bone or the outer surface of the lens mount, and the fixing groove extends from the proximal end of the terminal snake bone to the distal end of the terminal snake bone, or extends from the proximal end of the lens mount to the distal end of the lens mount, which can reduce the difficulty of welding the end of the traction rope to the fixing groove, and can also improve the reliability of welding the end of the traction rope to the fixing groove.

[0044] The following is combined with Figures 1 to 13 , the traction rope distal end fixing structure, insertion part and endoscope provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0045] The first aspect of this embodiment provides a detailed description of the traction rope distal end fixing structure of the present application.

[0046] The traction rope distal end fixing structure of this embodiment is applied to an endoscope, specifically to an endoscope insertion portion 300, to fix the traction rope 200 located at the distal end of the insertion portion 300.

[0047] The distal end fixing structure of the traction rope of this embodiment includes a fixing groove 110, such as Figure 1 and Figure 2The fixing groove 110 is used to accommodate the distal end of the traction rope 200, and the fixing groove 110 is fixedly connected to the distal end of the traction rope 200, as shown in FIG. Figure 1 and Figure 2 As shown. Exemplarily, the fixing groove 110 is fixedly connected to the distal end of the traction rope 200 by welding, bonding or the like.

[0048] Preferably, the fixing groove 110 is located on the outer surface of the terminal snake bone 311 of the active bending section 310, and the fixing groove 110 extends from the proximal end of the terminal snake bone 311 to the distal end of the terminal snake bone 311. Figure 1 to Figure 4 More preferably, the fixing groove 110 extends from the proximal end of the last segment of the snake bone 311 to the distal end surface of the last segment of the snake bone 311, which is not only conducive to the processing of the fixing groove 110, but also can make the connection length between the end of the traction rope 200 and the fixing groove 110 as long as possible. Not limited to this, the fixing groove 110 of this embodiment can also be located on the outer surface of the lens mount 320, and the fixing groove 110 extends from the proximal end of the lens mount 320 to the distal end of the lens mount 320.

[0049] Exemplarily, except for the last snake bone 311, the remaining snake bones are provided with a groove 312, and the groove 312 is used to fix the traction rope 200. The groove 312 is located in the middle of the remaining snake bones, such as Figure 1 to Figure 4 The remaining snake bones include the remaining snake bones on the active bending section 310 except the last snake bone 311, and also include the snake bones on the passive bending section 330. The length of the fixing groove 110 along the axial direction of the insertion part 300 of this embodiment is greater than the length of the groove 312 along the axial direction of the insertion part 300, so as to ensure the reliability of welding between the end of the traction rope 200 and the fixing groove 110. Figure 1 to Figure 4 shown.

[0050] It is known that the structure on the other snake bones for fixing the traction rope 200 is not limited to the groove 312, and can also be other structures, such as a fixing structure in the form of a spiral tube.

[0051] Preferably, the fixing groove 110 and the grooves 312 on the remaining snake bones are in the same straight line, so that the distal end of the traction rope 200 can also be positioned through the fixing groove 110. After the distal end of the traction rope 200 is fixed to the fixing groove 110, the traction rope 200 remains in a straight state, which ensures the strength of the traction rope 200.

[0052] Preferably, the fixing groove 110 and the last snake bone 311 or the lens holder 320 are an integrated structure. Figure 1 to Figure 4 As shown. Exemplarily, the fixing groove 110 is a concave structure formed on the end snake bone 311 or the lens holder 320 by stamping.

[0053] The distal end fixing structure of the traction rope of this embodiment has the advantages of easy positioning of the end of the traction rope 200, reduced difficulty in welding the end of the traction rope 200 and the fixing groove 110, improved reliability of welding the end of the traction rope 200 and the fixing groove 110, and easy grinding of burrs at the welding point.

[0054] Specifically: First, the fixing groove 110 of the present embodiment is located on the outer surface of the last segment of the serpentine bone 311 or the outer surface of the lens holder 320. Since the outer surface of the last segment of the serpentine bone 311 or the outer surface of the lens holder 320 has a large space, the difficulty of operation when welding the end of the traction rope 200 with the fixing groove 110 can be reduced. Second, the fixing groove 110 is located on the outer surface of the last segment of the serpentine bone 311 or the outer surface of the lens holder 320. The fixing groove 110 can extend from the proximal end to the distal end of the last segment of the serpentine bone 311, or from the proximal end to the distal end of the lens holder 320, so that the length of the fixing groove 110 along the axial direction of the insertion part 300 can be set longer, which can facilitate the positioning of the end of the traction rope 200, and can also increase the number of welding points between the end of the traction rope 200 and the fixing groove 110, thereby increasing the length of the traction rope 200 welded with the fixing groove 110, and improving the reliability of the connection between the end of the traction rope 200 and the fixing groove 110. Thirdly, the fixing groove 110 is located on the outer surface of the last segment of the serpentine bone 311 or the outer surface of the lens mount 320, so that the welding point when the end of the traction rope 200 is welded to the fixing groove 110 is also located on the outer surface of the last segment of the serpentine bone 311 or the outer surface of the lens mount 320, which can facilitate the grinding of burrs at the welding point and avoid the problem of excessive welding points occupying the internal space of the insertion part 300.

[0055] According to an optional embodiment, the fixing groove 110 is recessed from the outer surface of the last snake bone 311 to the center of the last snake bone 311. Figure 1 to Figure 4 or the fixing groove 110 is recessed from the outer surface of the lens mount 320 to the center of the lens mount 320. The fixing groove 110 is recessed toward the center of the distal snake bone 311 or the center of the lens mount 320, so that the structure of the fixing groove 110 does not cause the diameter of the insertion portion 300 to increase.

[0056] For example, Figure 1 and Figure 2 As shown, when the fixing groove 110 is located on the terminal snake bone 311, since the fixing groove 110 is recessed toward the center of the terminal snake bone 311, when the lens mount 320 is assembled with the terminal snake bone 311, a positioning groove 321 may be provided on the lens mount 320, the positioning groove 321 matches the fixing groove 110, and the positioning groove 321 is used to accommodate the fixing groove 110, thereby realizing the positioning of the lens mount 320, and the rotation of the lens mount 320 may also be limited by the cooperation between the positioning groove 321 and the fixing groove 110, thereby improving the reliability of the installation of the lens mount 320 and the assembly accuracy of the camera module 322 and the instrument tube 323 on the lens mount 320.

[0057] According to an optional embodiment, the recessed depth of the fixing groove 110 is greater than the diameter of the traction rope 200, and the traction rope 200 fixed on the insertion part 300 is located on the same straight line. The recessed depth of the fixing groove 110 refers to the height of the fixing groove 110 from the surface of the terminal serpentine 311 to the bottom of the groove. Exemplarily, when the fixing groove 110 is located on the terminal serpentine 311, the recessed depth of the fixing groove 110 is the same as the sum of the wall thickness of the terminal serpentine 311 and the diameter of the traction rope 200, so that the traction rope 200 fixed on the insertion part 300 is located on the same straight line to ensure the strength of the traction rope 200.

[0058] According to an optional embodiment, the bottom of the fixing groove 110 passes through the wall of the last snake bone 311 or the wall of the lens holder 320, and forms a first notch 111 at the bottom of the fixing groove 110, such as Figure 7 to Figure 9 The bottom of the fixing groove 110 forms a first notch 111 , which can reduce the internal space of the insertion part 300 occupied by the fixing groove 110 , so that the insertion part 300 can reserve a larger installation space for the instrument tube 323 .

[0059] On the other hand, the bottom of the fixing groove 110 forms a first notch 111. During production and processing, an opening can be first made on the wall surface of the last segment of the serpentine 311 or the wall surface of the lens holder 320, and then punched, so that it is easier to form the fixing groove 110 by punching. The bottom of the fixing groove 110 forms the first notch 111. When the lens holder 320 is assembled with the last segment of the serpentine 311, the first notch 111 can adapt to the processing error of the lens holder 320. Specifically, if the processing size of the lens holder 320 is too small, the lens holder 320 can be assembled on the last segment of the serpentine 311 by reducing the gap width of the first notch 111.

[0060] Preferably, the width of the first notch 111 is less than or equal to the diameter of the traction rope 200. Figure 8 As shown, the length of the first notch 111 is the same as the length of the entire fixing slot 110 along the axial direction of the insertion portion 300. In the preferred technical solution of the traction rope distal end fixing structure of this embodiment, the gap width of the first notch 111 is less than or equal to the diameter of the traction rope 200, which can avoid the problem that the gap width of the first notch 111 is too large, causing the end of the traction rope 200 to fall off from the first notch 111.

[0061] According to an optional embodiment, when the fixing groove 110 is located on the terminal serpentine 311, the distance between the distal end surface of the fixing groove 110 and the proximal end surface of the terminal serpentine 311 is smaller than the distance between the distal end surface of the terminal serpentine 311 and the proximal end surface of the terminal serpentine 311, and a gap 112 is formed between the distal end surface of the fixing groove 110 and the distal end surface of the terminal serpentine 311, such as Figure 3 to Figure 5As shown. That is, the distal end surface of the fixing groove 110 is not flush with the distal end surface of the last snake bone 311. Figure 5 As shown, the distal end surface of the fixing groove 110 (such as Figure 5 The first end surface 114 shown in FIG. 1 is located at the distal end surface of the last snake bone 311 (eg Figure 5 The distal end fixing structure of the traction rope of the preferred technical solution of this embodiment forms a notch 112 between the distal end face of the fixing groove 110 and the distal end face of the last snake bone 311. After the distal end of the traction rope 200 is fixed to the fixing groove 110, the portion of the distal end of the traction rope 200 that exceeds the fixing groove 110 can be bent into the notch 112 (such as Figure 6 As shown), the problem of the distal end of the traction rope 200 bending outwards and causing damage to the outer skin of the insertion part 300 can be avoided.

[0062] According to an optional embodiment, when the fixing groove 110 is located on the terminal snake bone 311, a second notch 113 is provided between the proximal end surface of the fixing groove 110 and the terminal snake bone 311. By forming the second notch 113, the fixing groove 110 can be formed by stamping. Fig.12 shown.

[0063] Preferably, the width of the second gap 113 along the circumferential direction of the last segment of the snake bone 311 is greater than the width of the fixing groove 110 along the circumferential direction of the last segment of the snake bone 311. Figure 10 to Figure 12 As shown. Fig.12 As shown, there are second gaps 113 of a certain width on both sides of the fixing groove 110. In the preferred technical solution of the traction rope distal end fixing structure of this embodiment, the width of the second gap 113 along the circumferential direction of the last segment snake bone 311 is greater than the width of the fixing groove 110 along the circumferential direction of the last segment snake bone 311, which can further reduce the difficulty of processing when processing the fixing groove 110.

[0064] The second aspect of this embodiment describes the insertion part of the present application in detail.

[0065] The inserting portion of this embodiment includes an active bending section 310, a lens holder 320 and a passive bending section 330. Figure 1 and Figure 2 The active bending section 310 is connected to the far end of the passive bending section 330, and the lens holder 320 is installed at the far end of the active bending section 310. Figure 1 and Figure 2 Preferably, a traction rope distal end fixing structure is provided on the active bending section 310 or the lens mount 320, and the traction rope distal end fixing structure is the traction rope distal end fixing structure of any technical solution in this embodiment.

[0066] The insertion part of this embodiment is provided with a traction rope distal end fixing structure of any one of the technical solutions in this embodiment on the active bending section 310 or the lens mount 320, so that the insertion part of this embodiment has the advantages of easy positioning of the end of the traction rope 200, reduced difficulty in welding the end of the traction rope 200 and the fixing groove 110, improved reliability of welding the end of the traction rope 200 and the fixing groove 110, and easy grinding of burrs at the welding points.

[0067] The third aspect of this embodiment provides a detailed description of the endoscope of the present application.

[0068] The endoscope of this embodiment includes an insertion portion 300, a handle 400 and a display device, such as Fig.13 As shown. The insertion part 300 is the insertion part of any technical solution in this embodiment. The insertion part 300 is connected to the handle 400, and the handle 400 is also connected to the display device. The structure of the handle 400 and the display device can be the same as the prior art, and will not be repeated here.

[0069] The endoscope of this embodiment may be a disposable endoscope, a limited-time multiplex endoscope, or an unlimited-time multiplex endoscope. The endoscope of this embodiment may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal mirror, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. This embodiment does not specifically limit the type of endoscope.

[0070] The endoscope of this embodiment has the insertion portion of any one of the technical solutions in this embodiment, so that the endoscope of this embodiment has the advantages of low assembly difficulty and high assembly reliability of the traction rope 200.

[0071] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0072] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.

Claims

1. A traction rope distal end fixing structure, applied to an endoscope, characterized in that: The traction rope distal end fixing structure comprises a fixing groove (110), the fixing groove (110) is used to accommodate the distal end of the traction rope (200), the fixing groove (110) is fixedly connected to the distal end of the traction rope (200), and The fixing groove (110) is located on the outer surface of the terminal snake bone (311) of the active bending section (310), and the fixing groove (110) extends from the proximal end of the terminal snake bone (311) to the distal end of the terminal snake bone (311); or the fixing groove (110) is located on the outer surface of the lens mount (320), and the fixing groove (110) extends from the proximal end of the lens mount (320) to the distal end of the lens mount (320).

2. The traction rope distal end fixing structure according to claim 1, characterized in that: The fixing groove (110) is recessed from the outer surface of the terminal snake bone (311) toward the center of the terminal snake bone (311); or the fixing groove (110) is recessed from the outer surface of the lens mount (320) toward the center of the lens mount (320).

3. The traction rope distal end fixing structure according to claim 2, characterized in that: The recessed depth of the fixing groove (110) is greater than the diameter of the traction rope (200), and enables the traction rope (200) fixed on the insertion part (300) to be located on the same straight line.

4. The traction rope distal end fixing structure according to claim 1, characterized in that: The bottom of the fixing groove (110) penetrates the wall surface of the distal snake bone (311) or the wall surface of the lens seat (320), and forms a first notch (111) at the bottom of the fixing groove (110).

5. The traction rope distal end fixing structure according to claim 4, characterized in that: The width of the first notch (111) is less than or equal to the diameter of the traction rope (200).

6. The traction rope distal end fixing structure according to any one of claims 1 to 5, characterized in that: When the fixing groove (110) is located on the terminal serpentine bone (311), the distance between the distal end surface of the fixing groove (110) and the proximal end surface of the terminal serpentine bone (311) is smaller than the distance between the distal end surface of the terminal serpentine bone (311) and the proximal end surface of the terminal serpentine bone (311), and a gap (112) is formed between the distal end surface of the fixing groove (110) and the distal end surface of the terminal serpentine bone (311).

7. The traction rope distal end fixing structure according to any one of claims 1 to 5, characterized in that: When the fixing groove (110) is located on the terminal snake bone (311), a second gap (113) is provided between the proximal end surface of the fixing groove (110) and the terminal snake bone (311).

8. The traction rope distal end fixing structure according to claim 7, characterized in that: The width of the second notch (113) along the circumferential direction of the last segment of the snake bone (311) is greater than the width of the fixing groove (110) along the circumferential direction of the last segment of the snake bone (311).

9. An insertion portion, characterized in that: The invention comprises an active bending section (310), a lens mount (320) and a passive bending section (330), wherein the active bending section (310) is connected to the distal end of the passive bending section (330), and the lens mount (320) is installed at the distal end of the active bending section (310), wherein: The active bending section (310) or the lens mount (320) is provided with a traction rope distal end fixing structure, and the traction rope distal end fixing structure is the traction rope distal end fixing structure according to any one of claims 1 to 8.

10. An endoscope, characterized in that: It comprises an insertion part (300), a handle (400) and a display device, wherein the insertion part (300) is the insertion part according to claim 9, the insertion part (300) is connected to the handle (400), and the handle (400) is also connected to the display device.

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