Operation assembly of endoscope and endoscope

Abstract

The utility model relates to a control assembly of an endoscope and the endoscope. A manipulation assembly of an endoscope includes: a housing; the connecting assembly is arranged on the inner wall of the shell; the limiting bracket is connected to the connecting assembly; the pull wire assembly comprises a pull wire and a pull wire pipe arranged on the outer side of the pull wire in a sleeving mode, the pull wire is arranged in the limiting support in a penetrating mode, one end of the pull wire pipe abuts against the limiting support, and the other end of the pull wire pipe is used for abutting against the bent part of the endoscope; the limiting support and the connecting assembly are provided with adjustable connecting positions in the first direction, and the first direction is the extending direction of the traction line pipe. According to the control assembly of the endoscope and the endoscope, the assembly precision of the traction line pipe is high, and the control effect on the bending part is good.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an endoscope operating component and an endoscope. Background Art

[0002] In clinical medicine, the use of endoscopes for examination and treatment is currently the most commonly used minimally invasive diagnosis and treatment method. Medical endoscopes only need to use natural holes in the human body or make small holes when necessary to reach the designated location. This method causes less damage to patients.

[0003] At present, endoscopes are divided into rigid endoscopes and flexible endoscopes. The flexible endoscopes in the prior art usually include a tip assembly, a bending part, an insertion part and a manipulation assembly connected in sequence. The manipulation assembly includes a housing, a winding wheel and a limiting part located in the housing, and a manipulation part provided on the housing. A traction line is wound around the winding wheel, the traction line passes through the limiting part, and the traction line is connected to the distal end of the bending part. The outside of the traction line is also sequentially provided with a traction line tube and an insertion part outer tube, and the two ends of the traction line tube are respectively in contact with the limiting part and the bending part. By rotating the manipulation part to drive the winding wheel to rotate, the traction line is pulled and moved relative to the limiting part, thereby driving the bending part to bend, and then driving the tip assembly to adjust the angle.

[0004] Because tolerances typically exist between the incoming materials of the traction wire tube and the outer tube of the insert, the relative lengths of the two tubes accumulate after assembly, further increasing the tolerances due to the accumulated dimensional chain. If the traction wire tube is too short, the end face of the traction wire tube near the control assembly will not be able to reliably abut the stopper, resulting in an ineffective fixation of the traction wire tube and affecting the control of the bend. If the traction wire tube is too long, it will bend under stress, increasing friction and wear on the traction wire, also affecting the control of the bend. Utility Model Content

[0005] Based on this, it is necessary to provide an endoscope control component and an endoscope with high assembly accuracy of the traction wire tube and good control effect on the bending part.

[0006] In one aspect, an embodiment of the present application provides an endoscope manipulation assembly, comprising:

[0007] shell;

[0008] A connecting component is provided on the inner wall of the housing;

[0009] a limiting bracket connected to the connecting assembly; and

[0010] A traction wire assembly, comprising a traction wire and a traction wire tube sleeved on the outside of the traction wire, wherein the traction wire is passed through the limit bracket, one end of the traction wire tube abuts against the limit bracket, and the other end is used to abut against the curved portion of the endoscope;

[0011] The limiting bracket and the connecting assembly have an adjustable connection position along a first direction, and the first direction is the extension direction of the traction wire tube.

[0012] In one embodiment, the limiting bracket and the connecting assembly are guided and matched along the first direction.

[0013] In one embodiment, the connecting assembly includes a first positioning wall, a second matching portion, and a third positioning wall spaced apart along the second direction, and the first positioning wall and the third positioning wall both extend along the first direction;

[0014] One of the second matching portion and the limiting bracket is provided with a guide groove extending along the first direction, and the other is provided with a guide rib;

[0015] The limiting bracket is located between the first positioning wall and the third positioning wall. The guide rib is inserted into the guide groove and cooperates with the guide groove to guide along the first direction; wherein the second direction is perpendicular to the first direction.

[0016] In one embodiment, the guide rib is provided on the second matching portion, and the guide groove is provided on the limiting bracket;

[0017] The guide rib and the second matching portion are constructed as an integrally formed guide wall structure, and the guide groove is provided on the surface of the limiting bracket facing the second matching portion;

[0018] When the guide rib is provided on the limiting bracket and the guide groove is provided on the second matching portion;

[0019] The guide rib extends from a surface of the limiting bracket facing the second matching portion toward the second matching portion, and the guide groove is provided on a surface of the second matching portion facing the limiting bracket.

[0020] In one embodiment, the end portions of the limiting bracket along the second direction respectively abut against the mutually facing surfaces of the first positioning wall and the third positioning wall.

[0021] In one embodiment, a plurality of support ribs are further provided on the inner wall of the housing, and the limiting bracket is supported on the support ribs;

[0022] A portion of the support rib is located between the first positioning wall and the third positioning wall, and another portion of the support rib is located between the second matching portion and the third positioning wall.

[0023] In one embodiment, both the first positioning wall and the third positioning wall are provided with glue dispensing openings.

[0024] In one embodiment, the glue dispensing opening on the first positioning wall and the glue dispensing opening on the third positioning wall are staggered with each other in the first direction.

[0025] In one embodiment, a through hole is provided in the limiting bracket for the traction line to pass through;

[0026] The traction wire assembly also includes a bushing, which is sleeved on the outside of the traction wire. One end of the traction wire tube is located in the through hole and abuts against the inner wall of the through hole through the bushing.

[0027] In one embodiment, the through hole includes an expanded diameter section and a necked section, and a step surface is provided at the junction of the expanded diameter section and the necked section;

[0028] One end of the pulling wire tube abuts against one axial end surface of the bushing, and the other axial end surface of the bushing abuts against the step surface.

[0029] A second aspect of an embodiment of the present application provides an endoscope, comprising the above-mentioned endoscope manipulation assembly.

[0030] Beneficial effects of the above-mentioned endoscope control assembly and endoscope:

[0031] With one end of the pull wire tube abutting against a stop bracket and the other end abutting against the curved portion of the endoscope, when the two ends of the pull wire are respectively connected to the distal end of the curved portion and the winding reel in the operating assembly of the endoscope, when the pull wire is pulled and moves relative to the stop bracket, the curved portion can bend. Because the stop bracket and the connecting assembly have an adjustable connection position along the extension direction of the pull wire tube, even if the pull wire tube or its external insertion portion outer tube has tolerances causing the pull wire tube's length to vary slightly, the relative positions of the stop bracket and the connecting assembly can be adjusted according to the actual length of the pull wire tube to ensure that one end of the pull wire tube always abuts against the stop bracket, effectively securing the pull wire tube, improving assembly accuracy, and ensuring the control effect of the curved portion. Furthermore, the problem of excessive friction and wear on the pull wire caused by an overly long pull wire tube can be avoided, thereby enhancing the control effect of the curved portion. In addition, because the tolerance variation in the pull wire tube's dimensions can be tolerated within a certain range, the processing accuracy requirements for the pull wire tube can be reduced, reducing costs and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the exploded structure of the manipulation assembly of the endoscope provided in an embodiment of the present application;

[0033] Figure 2 A cross-sectional view of a manipulation assembly of an endoscope provided in an embodiment of the present application;

[0034] Figure 3 for Figure 2 A local enlarged view of point A;

[0035] Figure 4 Another cross-sectional view of the manipulation assembly of the endoscope provided in an embodiment of the present application;

[0036] Figure 5 A schematic structural diagram of the endoscope provided in an embodiment of the present application.

[0037] Description of Figure Numbers:

[0038] 100. Endoscope;

[0039] 10. Endoscope operating assembly; 11. Housing; 12. Support ribs; 20. Pull wire assembly; 21. Pull wire; 22. Pull wire tube; 23. Bushing; 30. Connecting assembly; 31. First positioning wall; 32. Second mating portion; 321. Guide rib; 33. Third positioning wall; 34. Glue dispensing port; 35. Reinforcement rib; 40. Limiting bracket; 41. Through hole; 411. Expanded diameter section; 412. Neck section; 413. Step surface; 42. Guide groove; 421. Base; 422. Side wall; 423. Flanging;

[0040] 50. Insertion portion; 60. Bend portion;

[0041] F, first direction; S, second direction. DETAILED DESCRIPTION

[0042] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0045] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0046] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0047] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0048] The following describes the endoscope control assembly and the endoscope according to the embodiment of the present application with reference to the accompanying drawings.

[0049] Figure 1 A schematic diagram of the exploded structure of the manipulation assembly of the endoscope provided in an embodiment of the present application; Figure 2 A cross-sectional view of a manipulation assembly of an endoscope provided in an embodiment of the present application; Figure 3 for Figure 2 A local enlarged view of point A; Figure 4Another cross-sectional view of the manipulation assembly of the endoscope provided in an embodiment of the present application; Figure 5 A schematic structural diagram of the endoscope provided in an embodiment of the present application.

[0050] Reference Figure 1 、 Figure 2 、 Figure 5 The endoscope manipulation assembly 10 provided in the embodiment of the present application includes: a housing 11, a connecting assembly 30, a limiting bracket 40 and a traction wire assembly 20.

[0051] The connecting assembly 30 is disposed on the inner wall of the housing 11. The limiting bracket 40 is connected to the connecting assembly 30. The traction wire assembly 20 includes a traction wire 21 and a traction wire tube 22 that is sleeved on the outside of the traction wire 21. The traction wire 21 is inserted into the limiting bracket 40. One end of the traction wire tube 22 abuts the limiting bracket 40, and the other end is used to abut the curved portion 60 of the endoscope 100.

[0052] The limiting bracket 40 and the connecting assembly 30 have an adjustable connection position along the first direction F, and the first direction F is the extension direction of the pulling wire tube 22.

[0053] One end of the traction wire tube 22 is abutted against the limit bracket 40, and the other end is used to abut against the bending portion 60 of the endoscope 100. When the two ends of the traction wire 21 are respectively connected to the distal end of the bending portion 60 and the winding wheel in the operating assembly 10 of the endoscope, if the traction wire 21 is pulled and moves relative to the limit bracket 40, it can drive the bending portion 60 to bend. Since the limit bracket 40 and the connecting assembly 30 have an adjustable connection position along the extension direction of the traction wire tube 22, even if the traction wire tube 22 or the outer tube of the insertion portion thereof has a tolerance that causes a slight change in the length of the traction wire tube 22, the relative positions of the limit bracket 40 and the connecting assembly 30 can be adjusted according to the actual length of the traction wire tube 22 to ensure that one end of the traction wire tube 22 is always in contact with the limit bracket 40. The traction wire tube 22 can be effectively fixed, which can improve the assembly accuracy. In addition, it can also avoid the problem of large friction and wear of the traction wire 21 caused by the traction wire tube 22 being too long, thereby enhancing the control effect of the bending portion 60. In addition, since the tolerance variation in the size of the traction wire tube 22 can be allowed within a certain range, the processing accuracy requirements for the traction wire tube 22 can also be reduced, thereby reducing costs and increasing efficiency.

[0054] The first direction F may be a direction from the operating component to the bending portion 60. When the housing 11 is in an elongated shape, the first direction F may be parallel to the length direction of the housing 11.

[0055] In addition, in a specific implementation, the connection assembly 30, the limiting bracket 40, and the traction line assembly 20 provided on the housing 11 can be a group, or can be set to two or more groups, as long as the control requirements of the bending portion 60 are met.

[0056] In the embodiment of the present application, the limiting bracket 40 and the connecting assembly 30 are guided and matched along the first direction F.

[0057] With such a configuration, the position of the limiting bracket 40 along the connecting assembly 30 can be adjusted along the first direction F, and can be adjusted to better adapt to the length of the pulling wire tube 22 .

[0058] In the embodiment of the present application, the connecting assembly 30 includes a first positioning wall 31 , a second matching portion 32 and a third positioning wall 33 arranged at intervals along the second direction S. Both the first positioning wall 31 and the third positioning wall 33 extend along the first direction F.

[0059] One of the second matching portion 32 and the limiting bracket 40 is provided with a guide groove 42 extending along the first direction F, and the other is provided with a guide rib 321;

[0060] The limiting bracket 40 is located between the first positioning wall 31 and the third positioning wall 33 , and the guide rib 321 is inserted into the guide groove 42 and cooperates with the guide groove 42 to guide along the first direction F; wherein the second direction S is perpendicular to the first direction F.

[0061] Further, refer to Figure 1 As a possible embodiment, a guide rib 321 is provided on the second mating portion 32, and a guide groove 42 is provided on the position-limiting bracket 40. In this case, the guide rib 321 and the second mating portion 32 are constructed as an integrally formed guide wall structure, and the guide groove 42 is provided on the surface of the position-limiting bracket 40 facing the second mating portion 30. The guide groove 42 penetrates the position-limiting bracket 40 along the first direction F, facilitating sliding of the position-limiting bracket 40 relative to the second mating portion 32 along the first direction F, thereby adjusting the relative position between the position-limiting bracket 40 and the connecting assembly 30.

[0062] Combine Figure 1 and Figure 4 The limiting bracket 40 is located between the first positioning wall 31 and the third positioning wall 33, and the second matching portion 32 is inserted into the guide groove 42 and matched with the guide groove 42, wherein the second direction S is perpendicular to the first direction F.

[0063] With such a configuration, when the limiting bracket 40 moves relative to the connecting assembly 30 , it can slide along the first direction F by virtue of the cooperation between the guide groove 42 and the second matching portion 32 .

[0064] When implementing it, refer to Figure 1 and Figure 4The positioning bracket 40 may include a base 421, two side walls 422 provided on the base 421, and two flanges 423. The two side walls 422 are spaced apart along the second direction S, and the two flanges 423 are each connected to the end of the side wall 422 facing away from the base 421. The two flanges 423 extend toward each other, and there is a gap between the extended ends. The gap defines a guide groove 42. The gap can match the thickness of the guide rib 321 so that the guide rib 321 can pass through the gap and enter the space defined by the two flanges 423, the two side walls 422, and the base 421. At this time, the two flanges 423 abut against the opposite sides of the guide rib 321, guiding the relative movement of the limiting bracket 40 and the connecting assembly 30. Since the guide rib 321 passes through the guide groove 42 and enters the inner side of the above-mentioned space, the height of the limiting bracket 40 is prevented from being too high, which can save space in the housing 11 and make the structure more compact.

[0065] In other embodiments, the guide rib 321 can be provided on the position-limiting bracket 40, and the guide groove 42 can be provided on the second mating portion 32. In this case, the guide rib 321 extends from the surface of the position-limiting bracket 40 facing the second mating portion 32 toward the second mating portion 32, and the guide groove 42 is provided on the surface of the second mating portion 32 facing the position-limiting bracket 40. The position-limiting bracket 40 and the connecting assembly 30 still rely on the cooperation of the guide groove 42 and the guide rib 321 to achieve guided cooperation.

[0066] Such a configuration can make the adjustment process of the limiting bracket 40 along the connecting assembly 30 more stable.

[0067] In the embodiment of the present application, the ends of the limiting bracket 40 along the second direction S are respectively in contact with the mutually facing surfaces of the first positioning wall 31 and the third positioning wall 33 .

[0068] In this way, the limiting bracket 40 is accommodated in the space defined between the first positioning wall 31 and the third positioning wall 33, and the ends of the limiting bracket 40 along the second direction S respectively contact the facing surfaces of the first positioning wall 31 and the third positioning wall 33, which can prevent the limiting bracket 40 from shaking during the movement, making its movement and adjustment process more stable.

[0069] In addition, when the limiting bracket 40 is located between the first positioning wall 31 and the third positioning wall 33 , the second matching portion 32 is inserted into the guide groove 42 and abuts against the bottom wall of the guide groove 42 .

[0070] Thus, when the inner wall surface of the housing 11 is uneven, the second matching portion 32 can be used to support the limiting bracket 40. In addition, reinforcing ribs 35 can be provided on the mutually opposing surfaces of the first positioning wall 31 and the third positioning wall 33 to increase strength.

[0071] In the embodiment of the present application, a plurality of support ribs 12 are further provided on the inner wall of the housing 11 , and the limiting bracket 40 is supported on the support ribs 12 .

[0072] A portion of the support rib 12 is located between the first positioning wall 31 and the third positioning wall 33 , and another portion of the support rib 12 is located between the second matching portion 32 and the third positioning wall 33 .

[0073] With such an arrangement, the limiting bracket 40 can be supported within a relatively large range in the second direction S.

[0074] In the embodiment of the present application, both the first positioning wall 31 and the third positioning wall 33 are provided with glue dispensing openings 34 .

[0075] With such arrangement, after the limiting bracket 40 is adjusted to a suitable position on the connecting component 30 , the limiting bracket 40 can be fixedly connected to a suitable position on the connecting component 30 by applying glue on the glue dispensing port 34 .

[0076] In the embodiment of the present application, the glue dispensing opening 34 on the first positioning wall 31 and the glue dispensing opening 34 on the third positioning wall 33 are staggered with each other in the first direction F.

[0077] In this way, when the limiting bracket 40 is located at different positions of the connecting component 30 along the first direction F, it can be bonded and fixed to the connecting component 30 by dispensing glue at at least one of the glue dispensing openings 34 .

[0078] In the embodiment of this application, Figure 1 、 Figure 2 and Figure 3 The limiting bracket 40 is provided with a through hole 41 for the traction line 21 to pass through.

[0079] The pull wire assembly 20 further includes a bushing 23 , which is sleeved on the outside of the pull wire 21 . One end of the pull wire tube 22 is located in the through hole 41 and abuts against the inner wall of the through hole 41 via the bushing 23 .

[0080] Such a configuration can avoid the problem that the traction wire tube 22 directly contacts the connection component 30 and frequently rubs against it, thereby causing the connection component 30 to be easily worn, thereby increasing the service life of the limiting bracket 40.

[0081] In addition, the pulling wire tube 22 can be a metal capillary tube or a tightly wound metal spiral spring tube.

[0082] In the embodiment of the present application, the through hole 41 includes an expanded diameter section 411 and a necked section 412, and a step surface 413 is provided at the junction of the expanded diameter section 411 and the necked section 412. One end of the traction wire tube 22 abuts against one axial end face of the bushing 23, and the other axial end face of the bushing 23 abuts against the step surface 413. In this way, the traction wire tube 22 abuts against the step surface 413 across the bushing 23. The bushing 23 can be made of a soft material, etc., to prevent the limit bracket 40 from wearing out the traction wire tube 22 after a period of use, thereby increasing its service life. The diameter of the expanded diameter section 411 can be slightly larger than the diameter of the bushing 23, so as to accommodate the bushing 23 more stably.

[0083] In addition, in some other embodiments, the number of the expanding sections 411 of the through hole 41 can also be two, and the two expanding sections 411 can be distributed on opposite sides of the necking section 412, and a step surface 413 can also be set at the junction of the other expanding section 411 and the necking section 412.

[0084] Reference Figure 1 and Figure 5 On the other hand, an embodiment of the present application further provides an endoscope 100, comprising the above-mentioned endoscope manipulation assembly 10.

[0085] In addition, the endoscope 100 further includes an insertion portion 50 and a bending portion 60, which are sequentially connected to one end of the endoscope's control assembly 10. The pull wire 21 and the externally sheathed pull wire tube 22 pass through the insertion portion 50 and the bending portion 60. The end of the pull wire tube 22 facing away from the endoscope's control assembly 10 abuts the proximal end surface of the bending portion 60, and the side of the pull wire 21 facing away from the control assembly is connected to the distal end of the bending portion 60. With this arrangement, since one end of the pull wire tube 22 abuts the limiting bracket 40 and the other end abuts the proximal end surface of the bending portion 60 of the endoscope 100, when the pull wire 21 is pulled and moves relative to the limiting bracket 40, it can cause the bending portion 60 to bend.

[0086] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, 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, they should be considered to be within the scope of this specification.

[0087] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An endoscope control assembly, characterized in that: include: shell; a connecting assembly, disposed on the inner wall of the housing; A limiting bracket connected to the connecting assembly; as well as A pull wire assembly, comprising a pull wire and a pull wire tube sleeved outside the pull wire, wherein the pull wire is passed through the limit bracket, one end of the pull wire tube abuts against the limit bracket, and the other end is used to abut against the curved portion of the endoscope; The limiting bracket and the connecting assembly have an adjustable connection position along a first direction, and the first direction is the extension direction of the traction wire tube.

2. The endoscope manipulation assembly according to claim 1, characterized in that: The limiting bracket is guided and matched with the connecting assembly along the first direction.

3. The endoscope manipulation assembly according to claim 2, characterized in that: The connecting assembly includes a first positioning wall, a second matching portion, and a third positioning wall spaced apart along the second direction, wherein the first positioning wall and the third positioning wall both extend along the first direction; One of the second matching portion and the limiting bracket is provided with a guide groove extending along the first direction, and the other is provided with a guide rib; The limiting bracket is located between the first positioning wall and the third positioning wall, and the guide rib is inserted into the guide groove and cooperates with the guide groove to guide along the first direction; wherein, the second direction is perpendicular to the first direction.

4. The endoscope manipulation assembly according to claim 3, characterized in that: When the guide rib is provided on the second matching portion and the guide groove is provided on the limiting bracket; The guide rib and the second matching portion are constructed as an integrally formed guide wall structure, and the guide groove is provided on the surface of the limiting bracket facing the second matching portion; When the guide rib is provided on the limiting bracket and the guide groove is provided on the second matching portion; The guide rib extends from a surface of the limiting bracket facing the second matching portion toward the second matching portion, and the guide groove is provided on a surface of the second matching portion facing the limiting bracket.

5. The endoscope manipulation assembly according to claim 3, characterized in that: Ends of the limiting bracket along the second direction are respectively in contact with surfaces of the first positioning wall and the third positioning wall that face each other.

6. The endoscope manipulation assembly according to claim 3, characterized in that: The first positioning wall and the third positioning wall are both provided with glue dispensing openings.

7. The endoscope manipulation assembly according to claim 6, characterized in that: The glue dispensing opening on the first positioning wall and the glue dispensing opening on the third positioning wall are staggered with each other in the first direction.

8. The manipulation assembly of an endoscope according to any one of claims 1 to 6, characterized in that: The limiting bracket is provided with a through hole for the traction line to pass through; The pull wire assembly further includes a bushing, which is sleeved on the outside of the pull wire. One end of the pull wire tube is located in the through hole and abuts against the inner wall of the through hole via the bushing.

9. The endoscope manipulation assembly according to claim 8, characterized in that: The through hole includes an expanded diameter section and a necked section, and a step surface is provided at the junction of the expanded diameter section and the necked section; One end of the pulling wire tube abuts against one axial end surface of the bushing, and the other axial end surface of the bushing abuts against the step surface.

10. An endoscope, characterized in that: A manipulation assembly comprising an endoscope as claimed in any one of claims 1 to 9.

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