Manipulation assembly of endoscope and endoscope

Abstract

The present invention relates to a manipulation assembly of an endoscope, and an endoscope. The manipulation assembly of the endoscope comprises: a housing; a connecting assembly arranged on an inner wall of the housing; a limiting support connected to the connecting assembly; and a pull wire assembly. The pull wire assembly comprises a pull wire and a pull wire tube sleeved outside the pull wire, and the pull wire is arranged through the limiting support. One end portion of the pull wire tube abuts against the limiting support, and the other end portion is configured for abutting against a bending portion of the endoscope. The limiting support and the connecting assembly have an adjustable connection position in a first direction, and the first direction is an extension direction of the pull wire tube. According to the manipulation assembly of the endoscope and the endoscope of the present invention, the assembly accuracy of the pull wire tube is relatively high, and the control effect on the bending portion is relatively good.

Description

Manipulation assembly of endoscope and endoscope TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a manipulation assembly of an endoscope and an endoscope. BACKGROUND

[0002] In clinical medicine, endoscopy is the most common minimally invasive diagnosis and treatment method, and medical endoscopes can reach the designated position through natural body orifices or small holes when necessary, which causes less damage to patients.

[0003] Endoscopes are currently divided into hard endoscopes and soft endoscopes. The soft endoscope in the prior art generally comprises a tip assembly, a bending portion, an insertion portion and a manipulation assembly connected in sequence. The manipulation assembly comprises a housing, a winding wheel and a limiting portion located in the housing, and a manipulation portion provided on the housing. A traction line is wound on the winding wheel, the traction line passes through the limiting portion, and the traction line is connected to the distal end of the bending portion. The traction line is further sleeved with a traction line tube and an insertion portion outer tube in sequence, and the two ends of the traction line tube are respectively abutted against the limiting portion and the bending portion. The traction line is moved relative to the limiting portion by rotating the manipulation portion to drive the winding wheel to rotate, so that the bending portion is bent, and the tip assembly is adjusted in angle.

[0004] Since the tolerance of the traction line tube and the insertion portion outer tube outside the traction line tube usually exists, the relative length of the traction line tube and the insertion portion outer tube is accumulated due to the size chain, and the tolerance is further increased. If the traction line tube is too short, the end surface of the traction line tube close to the manipulation assembly cannot be reliably abutted against the limiting portion, which makes the traction line tube not effectively fixed, affecting the control effect of the bending portion; if the traction line tube is too long, the traction line tube will be bent under stress, increasing the friction and wear of the traction line, also affecting the control effect of the bending portion. SUMMARY

[0005] Therefore, it is necessary to provide a manipulation assembly of an endoscope and an endoscope with high assembly precision of the traction line tube and good control effect on the bending portion.

[0006] The present application provides a manipulation assembly of an endoscope, comprising:

[0007] a housing;

[0008] a connecting assembly provided on the inner wall of the housing;

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

[0010] The traction line assembly comprises a traction line and a traction line tube sleeved outside the traction line, the traction line is arranged in a limiting support, one end of the traction line tube abuts against the limiting support, and the other end is used for abutting against a bending part of an endoscope;

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

[0012] In one of the embodiments, the limiting support and the connecting assembly are guided in the first direction.

[0013] In one of the embodiments, the connecting assembly comprises a first positioning wall, a second matching part and a third positioning wall which are arranged at intervals along a second direction, and the first positioning wall and the third positioning wall both extend along the first direction.

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

[0015] The limiting support is located between the first positioning wall and the third positioning wall, the guide rib is inserted into the guide groove, and the guide groove and the guide rib are guided in the first direction; and the second direction is perpendicular to the first direction.

[0016] In one of the embodiments, the guide rib is arranged on the second matching part, and the guide groove is arranged on the limiting support.

[0017] The guide rib and the second matching part are configured as an integrally formed guide wall structure, and the guide groove is arranged on a surface of the limiting support facing the second matching part.

[0018] The guide rib is arranged on the limiting support, and the guide groove is arranged on the second matching part.

[0019] The guide rib extends from a surface of the limiting support facing the second matching part to the second matching part, and the guide groove is arranged on a surface of the second matching part facing the limiting support.

[0020] In one of the embodiments, ends of the limiting support along the second direction respectively abut against mutually facing surfaces of the first positioning wall and the third positioning wall.

[0021] In one of the embodiments, the inner wall of the shell is further provided with a plurality of supporting ribs, and the limiting support is supported on the supporting ribs.

[0022] Part of the supporting ribs are located between the first positioning wall and the third positioning wall, and part of the supporting ribs are located between the second matching part and the third positioning wall.

[0023] In one of the embodiments, a dot glue hole is formed on each of the first positioning wall and the third positioning wall.

[0024] In one of the embodiments, the dispensing opening on the first positioning wall and the dispensing opening on the third positioning wall are staggered in the first direction.

[0025] In one of the embodiments, the limiting support is provided with a through hole for the traction line to pass through.

[0026] The traction line assembly further comprises a bushing, the bushing is sleeved outside the traction line, one end of the traction line tube is located in the through hole and abuts against the inner wall of the through hole through the bushing.

[0027] In one of the embodiments, the through hole comprises an expanding section and a necking section, and a step surface is arranged at the junction of the expanding section and the necking section.

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

[0029] The second aspect of the embodiments of the present application provides an endoscope, which comprises the above-mentioned endoscope operating assembly.

[0030] The endoscope operating assembly and the endoscope have the following advantages:

[0031] One end of the traction line tube abuts against the limiting support, and the other end is used to abut against the curved part of the endoscope. When the two ends of the traction line are connected with the distal end of the curved part and the winding wheel in the operating assembly of the endoscope respectively, if the traction line is pulled to move relative to the limiting support, the curved part can be driven to bend. Since the limiting support and the connecting assembly have an adjustable connecting position along the extension direction of the traction line tube, even if the length of the traction line tube changes slightly due to the tolerance of the traction line tube or the external insertion part outer tube, the actual length of the traction line tube can be adjusted by adjusting the relative position of the limiting support and the connecting assembly, so that one end of the traction line tube always abuts against the limiting support. The traction line tube can be effectively fixed, the assembly precision can be improved, and the control effect of the curved part can be ensured. Moreover, the problem of large friction and wear of the traction line caused by the excessive length of the traction line tube can be avoided, and the control effect of the curved part is enhanced. In addition, the tolerance change of the size of the traction line tube can be allowed within a certain range, which can also reduce the processing precision requirement of the traction line tube, thereby reducing the cost and increasing the benefit. BRIEF DESCRIPTION OF DRAWINGS

[0032] FIG. 1 is an exploded structural schematic view of the endoscope operating assembly provided by the embodiments of the present application;

[0033] FIG. 2 is a sectional view of the endoscope operating assembly provided by the embodiments of the present application;

[0034] FIG. 3 is a partial enlarged view of A in FIG. 2;

[0035] Fig. 4 is another sectional view of the steering assembly of the endoscope according to an embodiment of the present application;

[0036] Fig. 5 is a structural schematic view of the endoscope according to an embodiment of the present application.

[0037] Explanation of reference numerals:

[0038] 100, endoscope;

[0039] 10, steering assembly of the endoscope; 11, housing; 12, support rib; 20, traction wire assembly; 21, traction wire; 22, traction wire tube; 23, bushing; 30, connecting assembly; 31, first positioning wall; 32, second mating portion; 321, guide rib; 33, third positioning wall; 34, dispensing port; 35, reinforcing rib; 40, limiting support; 41, through hole; 411, diameter expansion section; 412, necking section; 413, step surface; 42, guide groove; 421, base body; 422, side wall; 423, flange;

[0040] 50, insertion portion; 60, bending portion;

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

[0042] In order to make the above objectives, characteristics and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of ways beyond the specific embodiments described and illustrated herein, and it is therefore intended that the present application not be limited to the embodiments disclosed but will include all embodiments falling within the scope of the present application. Accordingly, the present application should not be construed as being limited to the following embodiments.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0044] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or a quantity of the indicated elements. Thus, a feature defined with "first", "second", etc. can include at least one of the features, explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless explicitly specified and limited otherwise.

[0045] In the present application, unless explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In the present application, unless explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0047] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0048] The endoscope operating assembly and endoscope of the embodiments of the present application will be described below with reference to the accompanying drawings.

[0049] Fig. 1 is an exploded structural schematic view of the endoscope operating assembly provided by the embodiments of the present application; Fig. 2 is a cross-sectional view of the endoscope operating assembly provided by the embodiments of the present application; Fig. 3 is a local enlarged view of A in Fig. 2; Fig. 4 is another cross-sectional view of the endoscope operating assembly provided by the embodiments of the present application; Fig. 5 is a structural schematic view of the endoscope provided by the embodiments of the present application.

[0050] With reference to FIG. 1, FIG. 2 and FIG. 5, the operating assembly 10 of the endoscope provided in the embodiments of the present application comprises a housing 11, a connecting assembly 30, a limiting support 40 and a traction wire assembly 20.

[0051] The connecting assembly 30 is arranged on the inner wall of the housing 11. The limiting support 40 is connected to the connecting assembly 30. The traction wire assembly 20 comprises a traction wire 21 and a traction wire tube 22 sleeved outside the traction wire 21. The traction wire 21 is arranged in the limiting support 40. One end of the traction wire tube 22 abuts against the limiting support 40, and the other end is used to abut against the bending part 60 of the endoscope 100.

[0052] The limiting support 40 and the connecting assembly 30 have adjustable connection positions along a first direction F, and the first direction F is the extension direction of the traction wire tube 22.

[0053] When the two ends of the traction wire 21 are connected to the distal end of the bending part 60 and the winding wheel in the operating assembly 10 of the endoscope respectively, if the traction wire 21 is pulled to move relative to the limiting support 40, the bending part 60 can be bent. Since the limiting support 40 and the connecting assembly 30 have adjustable connection positions along the extension direction of the traction wire tube 22, even if the length of the traction wire tube 22 changes slightly due to the tolerance of the insertion part outer tube, the actual length of the traction wire tube 22 can be adjusted by adjusting the relative positions of the limiting support 40 and the connecting assembly 30, so that one end of the traction wire tube 22 always abuts against the limiting support 40. The traction wire tube 22 can be effectively fixed, the assembly precision can be improved, and the problem of large friction and wear of the traction wire 21 caused by the excessive length of the traction wire tube 22 can be avoided, and the control effect of the bending part 60 is enhanced. In addition, the tolerance change of the size of the traction wire tube 22 can be allowed within a certain range, and the machining precision requirement of the traction wire tube 22 can be reduced, thereby reducing cost and increasing efficiency.

[0054] The first direction F can be the direction in which the operating assembly points to the bending part 60. When the housing 11 is in a strip shape, the first direction F can be parallel to the length direction of the housing 11.

[0055] In addition, in specific implementation, the connecting assembly 30, the limiting support 40 and the traction wire assembly 20 arranged on the housing 11 can be one group, or two or more groups, as long as the control requirement of the bending part 60 is met.

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

[0057] In this way, the position adjustment of the limiting support 40 along the connecting assembly 30 can be adjusted along the first direction F, which can better adapt to the length size of the traction line pipe 22.

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

[0059] One of the second matching part 32 and the limiting support 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 support 40 is located between the first positioning wall 31 and the third positioning wall 33, the guide rib 321 is inserted into the guide groove 42, and the guide groove 42 is guided and matched along the first direction F; wherein the second direction S is perpendicular to the first direction F.

[0061] Further, referring to FIG. 1, as a possible implementation, the guide rib 321 is provided on the second matching part 32, and the guide groove 42 is provided on the limiting support 40. At this time, the guide rib 321 and the second matching part 32 are configured as an integrally formed guide wall structure, and the guide groove 42 is provided on the surface of the limiting support 40 facing the second matching part 30. The guide groove 42 penetrates through the limiting support 40 along the first direction F, so as to facilitate the sliding of the limiting support 40 relative to the second matching part 32 along the first direction F, so as to adjust the relative position between the limiting support 40 and the connecting assembly 30.

[0062] In combination with FIG. 1 and FIG. 4, the limiting support 40 is located between the first positioning wall 31 and the third positioning wall 33, the second matching part 32 is inserted into the guide groove 42, and the guide groove 42 is guided and matched, wherein the second direction S is perpendicular to the first direction F.

[0063] In this way, when the limiting support 40 moves relative to the connecting assembly 30, it can rely on the cooperation of the guide groove 42 and the second matching part 32 to slide along the first direction F.

[0064] In the implementation, referring to FIG. 1 and FIG. 4, the positioning bracket 40 can include a base 421, two side walls 422 arranged on the base 421, and two flanges 423, each of which is connected to an end of the side wall 422 away from the base 421, the two flanges 423 extend towards each other, and the extended ends have a gap therebetween, which defines a guide slot 42, the gap can match the thickness of the guide rib 321, so as to facilitate the guide rib 321 to 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 positioning bracket 40 and the connecting assembly 30. Since the guide rib 321 passes through the guide slot 42 and enters the inside of the space, the height of the positioning bracket 40 is avoided to be too high, the space in the shell 11 can be saved, and the structure is more compact.

[0065] In other embodiments, the guide rib 321 can be arranged on the positioning bracket 40, and the guide slot 42 can be arranged on the second matching part 32. At this time, the guide rib 321 extends from the surface of the positioning bracket 40 facing the second matching part 32 to the second matching part 32, and the guide slot 42 is arranged on the surface of the second matching part 32 facing the positioning bracket 40. The positioning bracket 40 and the connecting assembly 30 still rely on the cooperation of the guide slot 42 and the guide rib 321 to realize the guiding cooperation.

[0066] In this way, the adjustment process of the positioning bracket 40 along the connecting assembly 30 is more stable.

[0067] In the embodiments of the present application, the ends of the positioning bracket 40 along the second direction S abut against the mutually facing surfaces of the first positioning wall 31 and the third positioning wall 33, respectively.

[0068] In this way, the positioning bracket 40 is accommodated in the space defined between the first positioning wall 31 and the third positioning wall 33, and after the ends of the positioning bracket 40 along the second direction S contact the mutually facing surfaces of the first positioning wall 31 and the third positioning wall 33, respectively, the positioning bracket 40 can be prevented from shaking during movement, so that the movement and adjustment process is more stable.

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

[0070] In this way, when the inner wall surface of the shell 11 is not flat, the second matching part 32 can be used to support the positioning bracket 40. In addition, the mutually facing surfaces of the first positioning wall 31 and the third positioning wall 33 can each be provided with a reinforcing rib 35 to increase the strength.

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

[0072] Part of the support ribs 12 are located between the first positioning wall 31 and the third positioning wall 33, and the other part of the support ribs 12 are located between the second matching part 32 and the third positioning wall 33.

[0073] In this way, the limiting support 40 can be supported in a larger range in the second direction S.

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

[0075] In this way, after the limiting support 40 is adjusted to the appropriate position on the connecting assembly 30, the limiting support 40 can be fixedly connected to the appropriate position on the connecting assembly 30 by gluing on the point glue hole 34.

[0076] In the embodiment of the present application, the point glue hole 34 on the first positioning wall 31 and the point glue hole 34 on the third positioning wall 33 are staggered in the first direction F.

[0077] In this way, when the limiting support 40 is located at different positions of the connecting assembly 30 along the first direction F, it can be fixedly connected to the connecting assembly 30 by gluing at least one point glue hole 34.

[0078] In the embodiment of the present application, in combination with FIGS. 1, 2 and 3, the limiting support 40 is provided with a through hole 41 for the traction line 21 to pass through.

[0079] The traction line assembly 20 further comprises a bushing 23, the bushing 23 is sleeved outside the traction line 21, one end of the traction line tube 22 is located in the through hole 41 and abuts against the inner wall of the through hole 41 through the bushing 23.

[0080] In this way, the problem that the connecting assembly 30 is easily worn due to the direct contact and frequent friction of the traction line tube 22 with the connecting assembly 30 can be avoided, and the service life of the limiting support 40 is improved.

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

[0082] In the embodiment of the present application, the through hole 41 comprises an enlarged diameter section 411 and a necked section 412, and a step surface 413 is arranged at the joint position of the enlarged diameter section 411 and the necked section 412. One end of the pull wire tube 22 abuts against one axial end surface of the bushing 23, and the other axial end surface of the bushing 23 abuts against the step surface 413. In this way, the pull wire tube 22 abuts against the step surface 413 through the bushing 23. The bushing 23 can be made of soft material, so as to prevent the limiting support 40 from wearing the pull wire tube 22 after being used for a period of time, and increase the service life. The diameter of the enlarged diameter section 411 can be slightly larger than the diameter of the bushing 23, so as to more stably accommodate the bushing 23.

[0083] In addition, in some other embodiments, the number of the enlarged diameter sections 411 of the through hole 41 can also be two, and the two enlarged diameter sections 411 can be distributed on opposite sides of the necked section 412, and the joint position of the other enlarged diameter section 411 and the necked section 412 can also be provided with a step surface 413.

[0084] Referring to FIG. 1 and FIG. 5, the embodiment of the present application further provides an endoscope 100, which comprises the above-mentioned endoscope operating assembly 10.

[0085] In addition, the endoscope 100 further comprises an insertion portion 50 and a bending portion 60 which are sequentially connected to one end of the endoscope operating assembly 10, and the pull wire 21 and the externally sleeved pull wire tube 22 pass through the insertion portion 50 and the bending portion 60, one end of the pull wire tube 22 away from the endoscope operating assembly 10 abuts against the proximal end surface of the bending portion 60, and the side of the pull wire 21 away from the operating assembly is connected to the distal end of the bending portion 60. In this way, since one end of the pull wire tube 22 abuts against the limiting support 40 and the other end abuts against the proximal end surface of the bending portion 60 of the endoscope 100, when the pull wire 21 is pulled to move relative to the limiting support 40, the bending portion 60 can be driven to bend.

[0086] The technical features of the above-mentioned embodiments can be combined in any manner, and for the sake of brevity, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0087] The above-mentioned embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it should not be understood as the limitation to the patent scope of the present application. It should be pointed out that, for the ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A steering assembly for an endoscope, the steering assembly comprising: The utility model relates to an endoscope's operating assembly, including: A shell; A connecting assembly arranged on the inner wall of the shell; A limiting support connected with the connecting assembly; and A traction line assembly including a traction line and a traction line tube sleeved outside the traction line, the traction line is arranged in the limiting support, one end of the traction line tube abuts against the limiting support, and the other end is used for abutting against the bending part of the endoscope. The limiting support and the connecting assembly have adjustable connection positions along a first direction, and the first direction is the extension direction of the traction line tube. The limiting support and the connecting assembly are guided and matched along the first direction.

2. The steering assembly of an endoscope according to claim 1, characterized in that, The connecting assembly includes a first positioning wall, a second matching part and a third positioning wall arranged at intervals along a second direction, and the first positioning wall and the third positioning wall extend along the first direction.

3. The steering assembly of an endoscope according to claim 2, wherein One of the second matching part and the limiting support is provided with a guide groove extending along the first direction, and the other is provided with a guide rib. The limiting support is located between the first positioning wall and the third positioning wall, the guide rib is inserted into the guide groove, and the guide rib and the guide groove are guided and matched along the first direction. The guide rib is arranged on the second matching part, and the guide groove is arranged on the surface of the limiting support facing the second matching part.

4. The steering assembly of an endoscope according to claim 3, wherein The guide rib and the second matching part are configured as an integrally formed guide wall structure, and the guide groove is arranged on the surface of the limiting support facing the second matching part. The guide rib is arranged on the limiting support, and the guide groove is arranged on the second matching part. The guide rib extends from the surface of the limiting support facing the second matching part to the second matching part, and the guide groove is arranged on the surface of the second matching part facing the limiting support. The ends of the limiting support along the second direction respectively abut against the mutually facing surfaces of the first positioning wall and the third positioning wall.

5. The steering assembly of an endoscope according to claim 3, wherein Point glue openings are arranged on the first positioning wall and the third positioning wall.

6. The steering assembly of an endoscope according to claim 3, wherein The point glue openings on the first positioning wall and the third positioning wall are staggered in the first direction.

7. A steering assembly for an endoscope according to claim 6, wherein, The limiting support is provided with a through hole for the traction line to pass through.

8. A steering assembly for an endoscope according to any one of claims 1-6, wherein, The traction line assembly further includes a bushing sleeved outside the traction line, one end of the traction line tube is located in the through hole and abuts against the inner wall of the through hole through the bushing. The through hole includes an expanded diameter section and a necked section, and a step surface is arranged at the junction position of the expanded diameter section and the necked section.

9. A steering assembly for an endoscope according to claim 8, wherein, One end of the traction line tube abuts against one axial end surface of the bushing, and the other axial end surface of the bushing abuts against the step surface. The utility model relates to an endoscope's operating assembly, including:

10. An endoscope characterized by comprising: The operating assembly of the endoscope as claimed in any one of claims 1-9.

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