A controllable bending medical device

Abstract

The present invention relates to a controllable bending medical device, comprising a controllable bending tube, a traction assembly and a rotating disk, wherein one end of the traction assembly is fixedly connected to the rotating disk, and the other end of the traction assembly is connected to the controllable bending tube, and the controllable bending tube in the controllable bending medical device is driven to bend by rotating the rotating disk to pull or loosen the traction assembly, and the rotating disk is provided with an adjustment boss, wherein when assembling the traction assembly, the tightness of the traction assembly is adjusted by adjusting the path of the traction assembly around the adjustment boss to meet the initial assembly requirements.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to a controllable bending medical device. Background Art

[0002] The controllable bending tube (i.e., snake bone) is an important component of the endoscope and a core component that controls the direction of the visual component. Its assembly effect directly determines the performance of the product. When assembling the controllable bending tube, the tension of the traction line is an important indicator. If the traction line is too tight, the controllable bending tube will bend in its initial state, affecting its use; if the traction line is too loose, the controllable bending tube will not be able to bend to the limit when in use, affecting the visual control effect. Summary of the invention

[0003] In order to solve the problem of how to adjust the tension of the traction wire when assembling the traction wire of the endoscope, the main purpose of the present invention is to provide a controllable bending medical device, which can adjust the tension of the traction wire.

[0004] In a first aspect, the present disclosure provides a controllable bending medical device, comprising a controllable bending tube, a traction assembly and a rotating disk, wherein one end of the traction assembly is fixedly connected to the rotating disk, and the other end of the traction assembly is connected to the controllable bending tube, and the controllable bending tube in the controllable bending medical device is driven to bend by rotating the rotating disk to pull or loosen the traction assembly, and the rotating disk is provided with an adjustment boss, wherein, when assembling the traction assembly, the tightness of the traction assembly is adjusted by adjusting the path of the traction assembly around the adjustment boss.

[0005] Optionally, the rotating disk is provided with a first fixed boss, and at least a portion of the traction assembly is fixedly mounted to the first fixed boss.

[0006] Optionally, the traction assembly includes a first traction line, and the adjustment boss includes a first adjustment boss. One end of the first traction line is fixedly connected to the first fixed boss, and the other end of the first traction line is connected to the controllable bending tube. The tightness of the first traction line can be adjusted by adjusting the path of the first traction line around the first adjustment boss.

[0007] Optionally, the traction assembly further includes a second traction line, one end of which is fixedly connected to the rotating disk, and the other end of which is connected to the controllable bending tube.

[0008] Optionally, the rotating disk is provided with a second fixed boss, the adjusting boss includes a second adjusting boss, one end of the second traction line is fixedly connected to the second fixed boss, the other end of the second traction line is connected to the controllable bending tube, and the tightness of the second traction line can be adjusted by adjusting the path of the second traction line around the second adjusting boss.

[0009] Optionally, the rotating disk further includes a plurality of the first adjusting bosses and a plurality of the second adjusting bosses.

[0010] Optionally, the first traction line goes around one or more of the first adjustment bosses, or the first traction line does not go around one or more of the first adjustment bosses; and

[0011] The second pulling wire goes around one or more of the second adjusting bosses, or the second pulling wire does not go around one or more of the second adjusting bosses.

[0012] Optionally, the rotating disk further includes a first steering boss and / or a second steering boss, wherein the first steering boss is used to change the winding direction of the first traction line, and the second steering boss is used to change the winding direction of the second traction line.

[0013] Optionally, the rotating disk is formed with a first through hole and a second through hole, the first traction line passes through the first through hole to limit the position of the first traction line, and the second traction line passes through the second through hole to limit the position of the second traction line.

[0014] Optionally, a damping member is further included, through which resistance is provided for the rotation of the rotating disk.

[0015] The controllable bending medical device of the above scheme installs and fixes the traction component by adjusting the component, so that the extension path of the traction component changes and the tightness of the traction component is adjusted, so that the controllable bending tube can be smoothly bent to a preset angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a controllable bending medical device in one embodiment of the present disclosure.

[0017] Figure 2a It is a schematic diagram of the structure of a rotating disk in one embodiment of the present disclosure.

[0018] Figure 2b for Figure 2a A schematic diagram of the structure when the rotating disk cooperates with part of the first traction line and part of the second traction line.

[0019] Figure 3aIt is a structural schematic diagram of the rotating disk at a certain angle when it cooperates with the first traction line, the second traction line and the controllable bending tube (the first steering boss and the second steering boss are provided on the rotating disk).

[0020] Figure 3b It is a structural schematic diagram of the rotating disk at another angle when it cooperates with the first traction line, the second traction line and the controllable bending tube.

[0021] Figure 3c It is a structural schematic diagram of the rotating disk at a certain angle when it cooperates with the first traction line, the second traction line and the controllable bending tube (the first steering boss and the second steering boss are not provided on the rotating disk).

[0022] Figure 3d It is a structural schematic diagram of the rotating disk, the first traction line and the controllable bending tube when they cooperate at a certain angle.

[0023] Figure 4a It is a schematic diagram of the structure when the rotating disk cooperates with part of the first traction line (the first traction line is connected to one of the first adjustment bosses).

[0024] Figure 4b It is a structural schematic diagram when the rotating disk cooperates with part of the first traction line (the first traction line is connected to a certain first adjustment boss).

[0025] Figure 4c It is a schematic diagram of the structure when the rotating disk cooperates with part of the first traction line (the first traction line is connected to another first adjustment boss).

[0026] Figure 4d It is a structural schematic diagram of the rotating disk and part of the first traction line when they cooperate (the first traction line is connected to another first adjustment boss).

[0027] Figure 4e It is a structural diagram of the rotating disk and part of the first traction line when they cooperate (the first traction line is not connected to the first adjustment boss)

[0028] Figure 5 This is a schematic diagram of the structure of a controllable bending medical device. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments:

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components. The term "connected" should also be understood in a broad sense, that is, it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] As used in this disclosure and the appended claims, the singular forms "a", "an", "said", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0034] In the present disclosure and the appended claims, the terms "plurality" and "multiples" refer to two or more than two unless otherwise specified.

[0035] It should be noted that the controllable bending tube 30 includes a plurality of interconnected bending tube units (also called snake bone units), and adjacent bending tube units can rotate relative to each other, thereby making the entire controllable bending tube 30 bendable. Since the structure of the controllable bending tube 30 is varied, this disclosure will not describe it. Specifically, Figure 5As shown, the controllable bending medical device 1 includes an insertion portion 70, and the insertion portion 70 includes a controllable bending tube 30 and an insertion tube 90. The proximal end of the insertion tube 90 is connected to the handle 20, and the distal end of the insertion tube 90 is connected to the controllable bending tube 30. More precisely, the distal end of the insertion tube 90 is connected to the bending tube unit located at the closest end of the controllable bending tube 30. The bending tube unit located at the farthest end of the controllable bending tube 30 is connected to the pioneer part (also called the head end), and the pioneer part is used to install structures such as optical sensors. One end of the traction assembly 50, 60 is installed on the rotating disk 10, and the other end of the traction assembly 50, 60 passes through the inside of the insertion tube 90 and the controllable bending tube 30, and is connected to the bending tube unit located at the farthest end. The methods of fixing the traction assembly 50, 60 to the rotating disk 10 include but are not limited to glue bonding, bolt fixing, riveting fixing, hot melting, screws, etc. It should be understood that the above description is only for better explaining the connection relationship of various structures in the controllable bending medical device 1, and does not limit the structure of the controllable bending medical device 1. In addition, the proximal end refers to the end close to the user (i.e., the end where the handle is located), and the distal end refers to the end away from the user (mainly the end where the fore end is located).

[0036] Since there may still be errors in the production and assembly process of parts, the tightness of the traction components 50, 60 may not meet the requirements, and the controllable bending tube 30 may not be bent normally or in place. Therefore, the present disclosure provides a controllable bending medical device 1, including a controllable bending tube 30, a traction component 50, 60 and a rotating disk 10. One end of the traction component 50, 60 is fixedly connected to the rotating disk 10, and the other end of the traction component 50, 60 is connected to the controllable bending tube 30. The traction component 50, 60 is pulled or loosened by rotating the rotating disk 10 to drive the controllable bending tube 30 in the controllable bending medical device 1 to bend. The rotating disk 10 is provided with adjustment bosses 12, 15. When assembling the traction components 50, 60, the tightness of the traction components 50, 60 is adjusted by adjusting the path of the traction components 50, 60 around the adjustment bosses 12, 15. Specifically, the extension path of the traction components 50, 60 is changed by making the traction components 50, 60 go around the adjustment bosses 12, 15, thereby adjusting the tightness of the traction components 50, 60. In addition to being steel wires, the traction components 50, 60 can also be made of any suitable material, such as metal and metal alloys, carbon fiber, glass fiber, polymer wire, natural fiber and / or any other suitable material or material combination. Assembling the traction components 50, 60 specifically means installing the traction components 50, 60 on the adjustment bosses 12, 15, the rotating disk 10 and the controllable bending tube 30.

[0037] Specifically, Figure 3dAs shown, the rotating disk 10 is provided with a first fixed boss 11, and at least part of the traction components 50, 60 are fixedly mounted to the first fixed boss 11. More specifically, the traction components 50, 60 include a first traction line 50, and the adjustment bosses 12, 15 include a first adjustment boss 12, one end of the first traction line 50 is fixedly connected to the first fixed boss 11, and the other end of the first traction line 50 is connected to the controllable bending tube 30, and the tightness of the first traction line 50 is adjusted by adjusting the path of the first traction line 50 to bypass the first adjustment boss 12. It should be understood that in some embodiments, only the first fixed boss 11 and the first adjustment boss 12 are provided on the rotating disk 10, such as Figure 3d As shown, it is not necessary to set the second fixed boss 14 and the second adjustment boss 15. Moreover, in order to facilitate the fixing of the first traction line 50, a first fixed boss 11 is set on the rotating disk 10. However, in other embodiments, the first traction line 50 may not be fixedly installed on the first fixed boss 11, but may be fixedly installed at other positions of the rotating disk 10. Optionally, the traction assembly 50, 60 also includes a second traction line 60, one end of which is fixedly connected to the rotating disk 10, and the other end of the second traction line 60 is connected to the controllable bending tube 30.

[0038] Optional, such as Figure 1 , Figure 2a as well as Figure 2b As shown, the rotating disk 10 is provided with a second fixed boss 14, and the adjusting bosses 12, 15 include a second adjusting boss 15. One end of the second traction line 60 is fixedly connected to the second fixed boss 14, and the other end of the second traction line 60 is connected to the controllable bending tube 30. The tightness of the second traction line 60 can be adjusted by adjusting the path of the second traction line 60 to bypass the second adjusting boss 15. The controllable bending tube 30 is bent by rotating the rotating disk 10 to pull or loosen the first traction line 50 and the second traction line 60. For example, the rotating disk 10 can be in a state of Figure 3a When the rotating disk 10 is rotated counterclockwise, the first pulling wire 50 is tightened, so that the other end of the first pulling wire 50 pulls one side of the controllable bending tube 30, and the second pulling wire 60 is loosened at the same time, so that the controllable bending tube 30 is bent toward the side connected to the first pulling wire 50. Figure 3b Similarly, when the rotating disk 10 is rotated clockwise, the first pulling wire 50 is loosened and the second pulling wire 60 is tightened, so that the other end of the second pulling wire 60 pulls the other side of the controllable bending tube 30 to make the controllable bending tube 30 bend toward the other side connected to the second pulling wire 60.

[0039] In addition, the first traction line 50 can be fixedly connected to the first fixing boss 11 by glue bonding, bolting, riveting, hot melting, screws, etc. The second traction line 60 can be fixedly connected to the second fixing boss 14 by glue bonding, bolting, riveting, hot melting, screws, etc.

[0040] In the above embodiment, the traction assembly 50, 60 includes a first traction line 50 and a second traction line 60, and the rotating disk 10 is provided with a first fixed boss 11 and a second fixed boss 14, and the adjustment bosses 12, 15 include a first adjustment boss 12 and a second adjustment boss 15. It should be understood that, although in the above embodiment, only one first traction line 50 and one second traction line 60 are included to control the controllable bending tube 30 to bend left and right or up and down. However, in some embodiments, two groups of traction lines may be included, namely a first traction line group and a second traction line group, each group of traction lines includes a first traction line 50 and a second traction line 60. Among them, the first traction line group is used to drive the controllable bending tube 30 to bend left and right, and the second traction line group is used to drive the controllable bending tube 30 to bend up and down. Moreover, the first traction line 50 may be wound around the first adjustment boss 12 for multiple turns, or may not be wound around the first adjustment boss 12 for more than one turn. The specific number of turns depends on the actual situation, and the present disclosure does not limit it. Similarly, the second pulling wire 60 may circle around the second adjusting boss 15 for multiple times, or may not circle around the second adjusting boss 15 for more than one time.

[0041] Optional, such as Figure 2a as well as Figure 2b As shown, the rotating disk 10 also includes a first steering boss 13 and / or a second steering boss 16. The first steering boss 13 is used to change the winding direction of the first traction line 50, and the second steering boss 16 is used to change the winding direction of the second traction line 60. The first steering boss 13 and the second steering boss 16 respectively share the pulling force of the first fixed boss 11 and the second fixed boss 14. Specifically, by changing the winding direction of the first traction line 50 and the second traction line 60, a part of the pulling force along the extension direction of the first traction line 50 and the second traction line 60 is separated to act on the side of the first traction line 50 and the second traction line 60, thereby reducing the possibility that the first traction line 50 and the second traction line 60 cannot withstand the excessive tension and are broken. It should be understood that the winding direction refers to the extension direction or winding direction of the traction line. Figure 2b As shown, the first pulling line 50 passes through two first turning bosses 13 , and the winding direction of the first pulling line 13 changes each time it passes through a first turning boss 13 .

[0042] In addition, the number of the first turning boss 13 and the second turning boss 16 can be adjusted according to the situation, such as 1, 2, 3 or more, which is not specifically limited in the present disclosure. Figure 3c As shown, the rotating disk 10 is not necessarily provided with the first deflection boss 13 and the second deflection boss 16 .

[0043] Optional, such as Figure 1 As shown, the rotating disk 10 is formed with a first through hole 17 and a second through hole 18, and the first traction line 50 passes through the first through hole 17. Compared with the portion where the first traction line 50 is connected to the first adjustment boss 12, the portion where the first traction line 50 is located in the first through hole 17 is closer to the other end of the first traction line 50 (i.e., the end connected to the controllable bending tube 30) along the extension direction of the first traction line 50. And compared with the portion where the first traction line 50 is connected to the first steering boss 13, the portion where the first traction line 50 is located in the first through hole 17 is closer to the other end of the first traction line 50 along the extension direction of the first traction line 50. Specifically, one end of the first traction line 50 is firstly wound and fixed on the first fixed boss 11, then detoured around the first adjustment boss 12 and the first steering boss 13, and finally the other end of the first traction line 50 passes through the first through hole 17 and is connected to the controllable bending tube 30. The purpose of such a design is to limit the position of the first traction line 50 after it enters the rotating disk 10, so as to prevent the position of the first traction line 50 on the rotating disk 10 from changing during the rotation of the rotating disk 10, thereby preventing the winding direction of the first traction line 50 on the first steering boss 13 and the first adjustment boss 12 from changing.

[0044] Similarly, the second traction line 60 passes through the second through hole 18. Moreover, compared with the portion where the second traction line 60 is connected to the second adjustment boss 15, the portion where the second traction line 60 is located in the second through hole 18 is closer to the other end of the second traction line 60 along the extension direction of the second traction line 60. And compared with the portion where the second traction line 60 is connected to the second steering boss 16, the portion where the second traction line 60 is located in the second through hole 18 is closer to the other end of the second traction line 60 along the extension direction of the second traction line 60. Specifically, one end of the second traction line 60 first goes around the second fixed boss 14, then goes around the second adjustment boss 15 and the second steering boss 16, and finally the other end of the second traction line 60 passes through the second through hole 18 and is connected to the controllable bending tube 30. The above design is also to avoid a large change in the position of the second traction line 60 located on the rotating disk 10 during the rotation of the rotating disk 10.

[0045] In order to increase the adjustable gear of the controllable bending medical device 1 and allow the factory to better adjust the tightness of the first traction line 50 and the second traction line 60, in some embodiments, such as Figure 2a as well as Figure 2bAs shown, the rotating disk 10 also includes a plurality of first adjustment bosses 12 and a plurality of second adjustment bosses 15. Specifically, the factory can select the first adjustment boss 12 fixedly connected to the first traction line 50 according to the situation, such as Figure 4a As shown, the first traction line 50 can only be wound around one of the first adjustment bosses 12. If the first traction line 50 is desired to be more tightened, the position and tension of the first traction line 50 can be adjusted by winding the first traction line 50 around different first adjustment bosses 12, as shown in FIG. Figure 4b , Figure 4c as well as Figure 4d If the first traction line 50 is desired to be relaxed, the first traction line 50 may be prevented from being routed around any first adjustment boss 12, as shown in FIG. Figure 4e shown.

[0046] It should be understood that the first traction line 50 can be selected to bypass one or more first adjustment bosses 12 according to the situation to adjust the tension of the first traction line 50. Similarly, the factory can also select the second traction line 60 to bypass the second adjustment boss 15 according to the situation to adjust the tension of the second traction line 60. Moreover, the number of the first adjustment boss 12 and the second adjustment boss 15 is not limited to Figure 2a as well as Figure 2b , the number of which can be 1, 2, 3 or more than 4.

[0047] It should be understood that the method of adjusting the tension of the traction assembly by the first adjustment boss 12 and the second adjustment boss 15 is mainly during the assembly of the controllable bending medical device 1. During the debugging period, the factory selects the first adjustment boss 12 and the second adjustment boss 15 on which the first traction line 50 and the second traction line 60 are respectively wound according to the tension of the first traction line 50 and the second traction line 60, so that the controllable bending tube 30 can be bent normally. When the user uses the controllable bending medical device 1, it is impossible to change the first traction line 50 to wind around the first adjustment boss 12 and the second traction line 60 to wind around the second adjustment boss 15 by rotating the rotating disk 10.

[0048] In some embodiments, the controllable bending medical device 1 further includes an operating member 40, which is connected to the rotating disk 10, and the rotating disk 10 is driven to rotate by operating the operating member 40. Specifically, the operating member 40 is an operating rod, and the operating rod is located outside the housing 210, while the controllable bending medical device 1 is located inside the housing 210, which is conducive to the user to control the rotation of the rotating disk 10 through the operating rod outside the housing 210 to control the bending of the controllable bending tube 30. It should be understood that although in some embodiments, the operating member 40 is an operating rod, in other embodiments, the operating member 40 can be a handle, a knob or other structures, and the present disclosure is not limited to this.

[0049] Reference Figure 1 and Figure 5 The controllable bending medical device 1 also includes a handle 20 and an insertion tube 90 , wherein the rotating disk 10 is mounted on the handle 20 , and the proximal end of the insertion tube 90 is connected to the handle 20 , while the distal end of the insertion tube 90 is connected to the controllable bending tube 30 .

[0050] Optionally, a damping member 80 is further included, and the damping member 80 provides resistance to the rotation of the rotating disk 10 .

[0051] Optionally, the handle 20 is provided with a housing 210 , and the damping member 80 is located between the rotating disk 10 and the housing 210 , so that the damping member 80 provides resistance to the rotation of the rotating disk 10 relative to the housing 210 .

[0052] Specifically, the damping member 80 is a damping pad. Due to the function of the damping member 80, a certain force is required to rotate the rotating disk 10, so that the rotating disk 10 can stop at any position within the rotation range of the rotating disk 10 so that the user can control the bending degree of the controllable bending tube 30 by rotating the rotating disk 10.

[0053] Optionally, the rotating disk 10 is a rotating wheel. Of course, in some embodiments, it can also be other structures, which is not limited in the present disclosure.

[0054] It should be understood that the first fixed boss 11, the first adjustment boss 12, the second fixed boss 14, and the second adjustment boss 15 are columnar boss structures formed on the surface of the rotating disk 10. Of course, in some embodiments, the first fixed boss 11, the first adjustment boss 12, the second fixed boss 14, and the second adjustment boss 15 can be fixedly connected to the rotating disk 10 by glue bonding, hot melting, ultrasonic welding, etc.

[0055] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A controllable bending medical device, comprising a controllable bending tube (30), a traction assembly (50, 60) and a rotating disk (10), wherein one end of the traction assembly (50, 60) is fixedly connected to the rotating disk (10), and the other end of the traction assembly (50, 60) is connected to the controllable bending tube (30), and the controllable bending tube (30) in the controllable bending medical device is driven to bend by rotating the rotating disk (10) to pull or loosen the traction assembly (50, 60), characterized in that: The rotating disk (10) is provided with adjusting bosses (12, 15). Wherein, when assembling the traction assembly (50, 60), the tightness of the traction assembly (50, 60) is adjusted by adjusting the path of the traction assembly (50, 60) around the adjustment boss (12, 15); The specific method of changing the path of the traction assembly (50, 60) around the adjustment boss (12, 15) is as follows: changing the number of the traction assembly (50, 60) around the adjustment boss (12, 15); the rotating disk (10) is provided with a first fixed boss (11), and at least part of the traction assembly (50, 60) is fixedly mounted on the first fixed boss (11); The traction assembly (50, 60) comprises a first traction line (50), the adjustment boss (12, 15) comprises a first adjustment boss (12), one end of the first traction line (50) is fixedly connected to the first fixed boss (11), the other end of the first traction line (50) is connected to the controllable bending tube (30), and the tightness of the first traction line (50) is adjusted by adjusting the path of the first traction line (50) bypassing the first adjustment boss (12); The traction assembly (50, 60) further comprises a second traction line (60), one end of the second traction line (60) is fixedly connected to the rotating disk (10), and the other end of the second traction line (60) is connected to the controllable bending tube (30); the rotating disk (10) is provided with a second fixed boss (14), the adjustment boss (12, 15) comprises a second adjustment boss (15), one end of the second traction line (60) is fixedly connected to the second fixed boss (14), and the tightness of the second traction line (60) is adjusted by adjusting the path of the second traction line (60) bypassing the second adjustment boss (15); The rotating disk (10) further comprises a plurality of the first adjusting bosses (12) and a plurality of the second adjusting bosses (15); the rotating disk (10) further comprises a first steering boss (13) and / or a second steering boss (16), wherein the first steering boss (13) is used to change the winding direction of the first traction line (50), and the second steering boss (16) is used to change the winding direction of the second traction line (60); The rotating disk (10) is formed with a first through hole (17) and a second through hole (18); the first pulling line (50) passes through the first through hole (17) to limit the position of the first pulling line (50); the second pulling line (60) passes through the second through hole (18) to limit the position of the second pulling line (60); wherein, compared with the portion where the first pulling line (50) is connected to the first adjusting boss (12), the portion of the first pulling line (50) located in the first through hole (17) is closer to the first pulling line (50) along the extension direction of the first pulling line (50). 50), so as to avoid that during the rotation of the rotating disk (10), the position of the first traction line (50) on the rotating disk (10) changes, causing the winding direction of the first traction line (50) on the first steering boss (13) and the first adjustment boss (12) to change; compared with the portion where the second traction line (60) is connected to the second adjustment boss (15), the portion of the second traction line (60) located in the second through hole (18) is closer to the other end of the second traction line (60) along the extension direction of the second traction line (60).

2. The controllable bending medical device according to claim 1, characterized in that: The first traction line (50) is routed around one or more of the first adjustment bosses (12), or the first traction line (50) does not route around one or more of the first adjustment bosses (12); and The second pulling line (60) passes around one or more of the second adjusting bosses (15), or the second pulling line (60) does not pass around one or more of the second adjusting bosses (15).

3. The controllable bending medical device according to claim 1 or 2, characterized in that: It also comprises a damping member (80), through which resistance is provided for the rotation of the rotating disk (10).

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