Ureteral flexible scope bending device

CN122701262APending Publication Date: 2026-09-08CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202611201949.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-08-10
Publication Date
2026-09-08

AI Technical Summary

Technical Problem

[0004]本发明的目的是提供一种输尿管软镜弯曲装置,解决了医疗人员在使用传统输尿管软镜时,需要频繁向各个方向转动手柄,导致医疗人员手部疲劳的技术问题

Benefits of technology

[0021]Compared to the aforementioned background technology, the ureteroscope bending device provided by the present invention includes a mounting base, a rotating rod at the end of the mounting base, the rotating rod being rotatably inserted through the base, and a transmission rod coaxially and rotatably inserted within the rotating rod. One end of the transmission rod is connected to the bending handle of the ureteroscope, allowing the ureteroscope to be rotatably connected to the mounting base, with the rotation axis of the ureteroscope perpendicular to the mounting base. A shifting assembly is provided on the side wall of the base away from the ureteroscope. The shifting assembly includes a housing fixedly connected to the base, and a first linkage member inside the housing. The first linkage member can slide axially within the housing, moving the first linkage member to different positions, thereby connecting the first linkage member to the transmission rod or the rotating rod. The first linkage member is connected to... The driving component is used to drive the first linkage component to rotate around its own axis. When the flexible ureteroscope needs to be bent, the medical personnel control the first linkage component to slide to different positions according to the direction of bending. When the flexible ureteroscope needs to rotate around an axis perpendicular to the mounting base and the flexible tube needs to be bent, the first linkage component is slid away from the driving component, so that the first linkage component is only engaged with the transmission rod. The driving component drives the transmission rod to rotate, and the bending handle connected to the transmission rod drives the flexible ureteroscope to rotate around a rotation axis perpendicular to the flexible ureteroscope's own axis. When the flexible ureteroscope rotates around its own axis and the flexible tube needs to be bent, the first linkage component is only engaged with the rotation rod, so that the driving component can drive the mounting base to rotate, and the flexible ureteroscope mounted on the mounting base rotates around its own axis.

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Abstract

The application discloses a ureter flexible mirror bending device and relates to the technical field of medical devices.The device comprises a mounting seat for bearing a ureter flexible mirror, the end of the mounting seat is provided with a rotating rod, the rotating rod is rotatably arranged on the base, a transmission rod is coaxially arranged in the rotating rod, one end of the transmission rod extending out of the rotating rod is in transmission connection with a bending handle of the ureter flexible mirror, a gear shifting assembly is connected with the base and comprises a shell, a first linkage is slidably arranged in the shell, the sliding direction of the first linkage is parallel to the axis of the transmission rod, the first linkage is in transmission connection with the transmission rod or the rotating rod by sliding the first linkage, a driving element in transmission connection with the first linkage is used for driving the first linkage to rotate, and the application solves the technical problem that the existing ureter flexible mirror needs to manually operate the bending handle to bend the front end of the flexible tube, the medical staff needs to frequently rotate the handle in various directions when long-time handle operation is performed, and the hands of the medical staff are tired.
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Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a flexible ureteroscope bending device. Background Technology

[0002] Flexible ureteroscopy is commonly used in urology for the examination and treatment of kidney and ureteral diseases. It offers advantages such as minimal invasiveness, less pain, and faster recovery, and has been widely adopted in urological diagnosis and treatment, becoming a primary clinical method. Clinically, a combination of holmium laser fiber optics and a miniature ureteroscope can be used for lithotripsy. When using existing flexible ureteroscopes for related treatments, the end of the flexible ureteroscope's handle needs to be rotated to allow the handle to bend and adapt to the body's curved passages. Prolonged manipulation of the handle requires frequent rotation in various directions, leading to hand fatigue.

[0003] In summary, how to provide an auxiliary device that can assist in the rotation of a flexible ureteroscope and reduce the physical exertion of medical personnel is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a flexible ureteroscope bending device, which solves the technical problem that medical personnel need to frequently rotate the handle in various directions when using traditional flexible ureteroscopes, resulting in hand fatigue.

[0005] To achieve the above objectives, the present invention provides a flexible ureteroscope bending device, comprising:

[0006] The mounting base is used to support the flexible ureteroscope. The end of the mounting base is provided with a rotating rod, which is rotatably inserted into the base.

[0007] A transmission rod is coaxially inserted inside the rotating rod. One end of the transmission rod, which extends out of the rotating rod, is connected to the curved handle of the ureteroscope to drive the curved handle to rotate.

[0008] A shift assembly is connected to a base. The shift assembly includes a housing. A first linkage member is slidably provided inside the housing. The sliding direction of the first linkage member is parallel to the axis of the transmission rod. By sliding the first linkage member, the first linkage member is connected to the transmission rod or the rotating rod.

[0009] The driving component is connected to the first linkage component in a transmission manner, and is used to drive the first linkage component to rotate.

[0010] Preferably, the shifting assembly further includes a magnetic ring, which is slidably disposed within the inner cavity of the housing. A first linkage is coaxially disposed within the magnetic ring and fixed to the magnetic ring. An electromagnetic component is provided on the side of the magnetic ring away from the rotating rod and is fixedly connected to the housing.

[0011] When the electromagnetic component is not energized, the magnetic ring attracts the electromagnetic component, and the first linkage component and the rotating rod are connected by transmission.

[0012] When the electromagnetic component is energized, the magnetic ring repels the electromagnetic component, and the first linkage component and the transmission rod are connected.

[0013] Preferably, the driving member is located at the end of the housing away from the base, the output shaft of the driving member extends into the inner cavity of the housing, and a second linkage is connected between the output shaft and the first linkage member.

[0014] Preferably, the first linkage member has a first docking groove and a second docking groove at both ends along its own axis. Compared with the first docking groove, the second docking groove is closer to the driving member. The first docking groove is inserted into the transmission rod, and the second docking groove is inserted into the second linkage member.

[0015] Preferably, the transmission rod has a tapered portion at the end near the driving member, the diameter of the tapered portion gradually decreasing towards the driving member, and the first mating groove is specifically a conical groove with a friction surface on its inner wall. The first mating groove can press tightly against the tapered portion so that the transmission rod can rotate when the first linkage rotates.

[0016] Preferably, the second mating groove is a rib groove, which is used to restrict the relative rotation of the second linkage member and the first linkage member about their axis.

[0017] Preferably, a first convex ring is provided on the outer periphery of the port of the first docking groove, and a second convex ring is provided on the inner wall of the port of the rotating rod near the driving member. The outer diameter of the first convex ring is smaller than the inner diameter of the rotating rod, and the outer wall of the first convex ring is in close contact with the inner wall of the second convex ring.

[0018] Preferably, both the mounting base and the base are L-shaped bent plates, with the rotating rod vertically disposed on the side wall of the bent portion of the mounting base and the rotating rod vertically passing through the bent portion of the base.

[0019] Preferably, the bending handle includes a rotating base, the end of the transmission rod extends into the inner cavity of the rotating base, and a rotating disk is rotatably provided at the port of the rotating base. The rotating disk carries a flexible ureteroscope, and the end face edge of the rotating disk facing the mounting seat is provided with drive teeth, which are connected to the transmission rod in a transmission connection.

[0020] Preferably, a reinforcing plate is provided between the bent portion of the rotating base and the mounting base, and the transmission rod passes vertically through the reinforcing plate.

[0021] Compared to the aforementioned background technology, the ureteroscope bending device provided by the present invention includes a mounting base, a rotating rod at the end of the mounting base, the rotating rod being rotatably inserted through the base, and a transmission rod coaxially and rotatably inserted within the rotating rod. One end of the transmission rod is connected to the bending handle of the ureteroscope, allowing the ureteroscope to be rotatably connected to the mounting base, with the rotation axis of the ureteroscope perpendicular to the mounting base. A shifting assembly is provided on the side wall of the base away from the ureteroscope. The shifting assembly includes a housing fixedly connected to the base, and a first linkage member inside the housing. The first linkage member can slide axially within the housing, moving the first linkage member to different positions, thereby connecting the first linkage member to the transmission rod or the rotating rod. The first linkage member is connected to... The driving component is used to drive the first linkage component to rotate around its own axis. When the flexible ureteroscope needs to be bent, the medical personnel control the first linkage component to slide to different positions according to the direction of bending. When the flexible ureteroscope needs to rotate around an axis perpendicular to the mounting base and the flexible tube needs to be bent, the first linkage component is slid away from the driving component, so that the first linkage component is only engaged with the transmission rod. The driving component drives the transmission rod to rotate, and the bending handle connected to the transmission rod drives the flexible ureteroscope to rotate around a rotation axis perpendicular to the flexible ureteroscope's own axis. When the flexible ureteroscope rotates around its own axis and the flexible tube needs to be bent, the first linkage component is only engaged with the rotation rod, so that the driving component can drive the mounting base to rotate, and the flexible ureteroscope mounted on the mounting base rotates around its own axis.

[0022] This application allows for switching the transmission connection between the drive component and the transmission rod or rotating rod by sliding the first linkage component. Medical personnel can switch the rotation mode of the ureteroscope according to their own needs, so that the tubing bends in the target direction, reducing the need for manual rotation by medical personnel and reducing their physical exertion. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a structural diagram of the flexible ureteroscope bending device provided in an embodiment of the present invention;

[0025] Figure 2 This is a side view of the flexible ureteroscope bending device provided in an embodiment of the present invention;

[0026] Figure 3 This is a first partial cross-sectional view of the flexible ureteroscope bending device provided in an embodiment of the present invention;

[0027] Figure 4 This is a second partial cross-sectional view of the flexible ureteroscope bending device provided in an embodiment of the present invention.

[0028] Among them, 1-mounting base; 101-rotating rod; 102-second convex ring; 2-base; 3-transmission rod; 4-housing; 5-first linkage component; 501-first docking groove; 502-second docking groove; 503-first convex ring; 6-magnetic ring; 7-electromagnetic component; 8-driving component; 9-second linkage component; 10-rotating base; 11-rotating disk; 1101-driving gear; 12-ureteroscope; 13-reinforcing plate. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] This invention provides a flexible ureteroscope bending device; please refer to the appendix of the instruction manual. Figure 1 With appendix Figure 2 This application includes a mounting base 1, with a rotating rod 101 at one end of the mounting base 1. A flexible ureteroscope 12 is rotatably connected to the mounting base 1. The flexible ureteroscope 12 is arranged parallel to the rotating rod 101, and the rotation axis of the flexible ureteroscope 12 is perpendicular to the end face of the mounting base 1. Furthermore, the rotating rod 101 has a hollow cavity, and a transmission rod 3 is provided inside the hollow cavity. The transmission rod 3 can rotate around its own axis within the hollow cavity. The transmission rod 3 is connected to the bending handle of the flexible ureteroscope 12. That is, when the transmission rod 3 rotates around its own axis, the bending handle is fixedly connected to the flexible ureteroscope 12 and drives the flexible ureteroscope 12 to rotate around an axis perpendicular to the end face of the mounting base 1. The rotating rod 101 is rotatably mounted on the side wall of the base 2. A shifting assembly is provided on the side of the base 2 away from the flexible ureteroscope 12. The shifting assembly includes a housing 4 fixedly connected to the side wall of the base 2. The housing 4 is coaxially arranged with the transmission rod 3 and the rotating rod 101. The ends of the transmission rod 3 and the rotating rod 101 extend into the inner cavity of the housing 4. A first linkage 5 is slidably provided in the inner cavity of the housing 4. The first linkage 5 can be connected to the transmission rod 3 or the rotating rod 101. A driving member 8 is connected to the end of the first linkage 5 away from the transmission rod 3. The driving member 8 is used to drive the first linkage 5 to rotate.

[0032] When using the flexible ureteroscope 12 of this application to bend the tubing, the medical personnel can slide the first linkage 5 as needed. After sliding the first linkage 5 towards the side closer to the drive member 8, the first linkage 5 engages with the rotating rod 101. The drive member 8 drives the rotating rod 101 to rotate around its own axis through the first linkage 5. The mounting base 1, which is fixed to the rotating rod 101, rotates accordingly. The flexible ureteroscope 12, which is mounted on the mounting base 1, rotates around its own axis, causing the tubing to bend in the target direction. After sliding the first linkage 5 away from the drive member 8, the first linkage 5 engages with the transmission rod 3. The drive member 8 drives the transmission rod 3 to rotate around its own axis through the first linkage 5. The flexible ureteroscope 12, which is connected to the transmission rod 3, rotates around an axis perpendicular to the mounting base 1, causing the tubing to bend in the target direction.

[0033] Please continue to refer to the instruction manual appendix. Figure 1 The shifting assembly also includes a magnetic ring 6, which can slide along the axis of the housing 4. Preferably, the first linkage 5 is fixedly connected to the inner hole of the magnetic ring 6, that is, the magnetic ring 6 can drive the first linkage 5 to slide. An electromagnetic element 7 is provided between the magnetic ring 6 and the driving element 8. The electromagnetic element 7 is fixedly connected to the housing 4. When the electromagnetic element 7 is not energized, it does not generate a magnetic field. At this time, the electromagnetic element 7 can be equivalent to an armature. The electromagnetic element 7 can attract the magnetic ring 6, causing the magnetic ring 6 to move closer to the driving element 8, so that the first linkage 5 fixedly connected to the magnetic ring 6 and the magnetic ring 6 can slide together. The rotating rod 101 is engaged. When the electromagnetic component 7 is energized, it generates a magnetic field. The magnetic fields of the electromagnetic component 7 and the magnetic ring 6 are of the same pole. The electromagnetic component 7 and the magnetic ring 6 repel each other. The magnetic ring 6 drives the first linkage 5 to slide away from the driving component 8, so that the first linkage 5 is engaged with the transmission rod 3. Preferably, a switching button is provided on the side wall of the shifting assembly. The switching button is electrically connected to the electromagnetic component 7. When the medical personnel need to change the rotation mode of the ureteroscope 12, they only need to press the switching button to switch the rotation mode.

[0034] Please refer to the instruction manual appendix. Figure 2 With appendix Figure 3The driving component 8 is located on the outer wall of the end of the housing 4 away from the flexible ureteroscope 12. The driving component 8 extends the output shaft into the inner cavity of the housing 4. Preferably, the end of the output shaft is engaged with the second linkage 9. The end face of the second linkage 9 near the driving component 8 is provided with a transmission groove, and the output shaft extends into the transmission groove. Similarly, the two ends of the first linkage 5 are respectively provided with a first docking groove 501 and a second docking groove 502. The first docking groove 501 and the second docking groove 502 are distributed sequentially along the direction close to the driving component 8. When the first linkage 5 slides away from the driving component 8, the first docking groove 501 engages with the transmission rod 3, and the inner cavity of the second docking groove 502 is inserted into the second linkage 9. It should be noted that during the process of the first linkage 5 moving away from the driving component 8, the second docking groove 502 is always inserted into the second linkage 9 to ensure that the first linkage 5 can always receive the power output by the driving component 8 during the process of switching the rotation direction of the flexible ureteroscope 12.

[0035] Preferably, both the transmission groove and the second docking groove 502 are specifically prismatic grooves, that is, the port shape of the groove is polygonal. Correspondingly, the ends of the second linkage 9 and the output shaft of the drive member 8 are prisms. The prisms and the prismatic grooves are tightly fitted to ensure that the second linkage 9 and the output shaft of the drive member 8, and the first linkage 5 and the second linkage 9 can slide axially, while restricting the rotational freedom between the above components, so that the power of the drive member 8 can be stably transmitted to the ureteroscope 12. In addition, the first docking groove 501 is specifically a conical groove with a friction surface on its inner wall. The transmission rod 3 has a tapered part at one end near the drive member 8. The diameter of the tapered part gradually decreases towards the drive member 8, making the side wall of the tapered part conical. When the first linkage 5 slides away from the drive member 8, the outer wall of the tapered part is pressed tightly against the inner wall of the first docking groove 501. When the first linkage 5 rotates, the first docking groove 501 drives the transmission rod 3 to rotate through friction.

[0036] Furthermore, a first protruding ring 503 is provided on the outer wall of the first docking groove 501. Correspondingly, a second protruding ring 102 is provided on the inner wall of the rotating rod 101 near the driving member 8. When the first linkage 5 slides towards the driving member 8, the transmission rod 3 separates from the first docking groove 501, and the outer wall of the first protruding ring 503 fits against the inner wall of the second protruding ring 102. At this time, the first linkage 5 and the rotating rod 101 are connected by frictional transmission. It should be noted that the width of the first protruding ring 503 and the second protruding ring 102 is smaller than that of the first docking groove. The groove depth of 501, that is, after the first docking groove 501 is fully docked with the transmission rod 3, the first convex ring 503 and the second convex ring 102 are completely separated, so as to avoid the transmission rod 3 and the rotating rod 101 rotating at the same time, which would affect the bending effect of the hose. In addition, the outer diameter of the first convex ring 503 is smaller than the inner diameter of the rotating rod 101. When the first linkage 5 slides away from the driving member 8, the first convex ring 503 does not contact the inner wall of the rotating rod 101, so as to avoid the friction between the first convex ring 503 and the inner wall of the rotating rod 101 after the first convex ring 503 rotates, causing the rotating rod 101 to rotate accordingly.

[0037] Please refer to the instruction manual appendix. Figure 1 Both the mounting base 1 and the base 2 are specifically L-shaped bent plates. Preferably, the rotating rod 101 passes through the bent portion of the base 2. The length of the base body of the base 2 is greater than the length of the bent portion. The longer base body has a larger bearing area, which allows the base 2 to be set stably. The rotating rod 101 is set on the bent portion of the mounting base 1. The mounting base body and the rotating rod 101 are located on opposite sides of the bent portion. The bent portion of the mounting base 1 provides a more stable setting area for the rotating rod 101. It also makes the horizontal height of the transmission rod 3 higher than the end face of the mounting base body, so that the transmission rod 3 can be connected to the ureteroscope 12 above the mounting base 1 body.

[0038] Please refer to the instruction manual appendix. Figure 3 With appendix Figure 4The curved handle on the end face of the mounting base 1 includes a rotating base 10. A mounting groove is provided at the port of the rotating base 10. The mounting groove forms a positioning ring platform on the side wall of the rotating base 10. A rotating disk 11 is provided at the port of the rotating base 10. The edge of the rotating disk 11 abuts against the positioning ring platform. The positioning ring platform and the side wall of the mounting groove together restrict the setting position of the rotating disk 11. Furthermore, a number of driving teeth 1101 are provided on the edge of the end face of the rotating disk 11 facing the mounting base 1. Each driving tooth 1101 is circumferentially distributed around the axis of the rotating disk 11. In addition, a reinforcing plate 13 is provided on the mounting base 1. The reinforcing plate 13 is set perpendicular to the mounting base body. The transmission rod 3 passes through the reinforcing plate 13. The reinforcing plate 13 provides an additional support point for the transmission rod 3, ensuring that the rotation process of the transmission rod 3 is more stable. Preferably, a bearing is provided between the transmission rod 3 and the reinforcing plate 13. The bearing is used to reduce the friction experienced by the transmission rod 3 during rotation. The end of the transmission rod 3 extends into the inner cavity of the rotating base 10, and the outer periphery of the end is provided with transmission teeth. The transmission teeth mesh with the drive teeth 1101. When the transmission rod 3 rotates around its own axis, the transmission teeth drive the rotating disk 11 to rotate through the drive teeth 1101. The flexible ureteroscope 12 on the rotating disk 11 rotates accordingly.

[0039] In one embodiment of this application, a medical professional performs a related treatment procedure. When it is necessary to bend the flexible tubing, the medical professional adjusts the transmission state of the first linkage 5 according to the desired bending direction. When it is necessary to rotate the flexible ureteroscope 12 around an axis perpendicular to the mounting base 1, the medical professional presses the switching button, energizes the electromagnetic component 7 and generates a magnetic field. The electromagnetic component 7 and the magnetic ring 6 repel each other through magnetic force, and the magnetic ring 6 slides away from the drive component 8. The first protruding ring 503 of the first linkage 5 separates from the second protruding ring 102 of the rotating rod 101, and the first docking groove 501 of the first linkage 5 is inserted into the transmission rod 3. At this time, the first linkage 5 and the transmission rod 3 complete the transmission connection. Subsequently, the medical professional starts the drive component 8, and the output shaft of the drive component 8 is connected to the second linkage 9. The first linkage 5 transmits power, causing the transmission rod 3 to rotate around its own axis. The transmission rod 3 extends into the transmission gear of the rotating base 10, driving the drive gear 1101 of the rotating disk 11, causing the rotating disk 11 and the flexible ureteroscope 12 to rotate around an axis perpendicular to the mounting base 1. When it is necessary for the flexible ureteroscope 12 to rotate around its own axis, only the drive component 8 needs to be activated. The unpowered electromagnetic component 7 and the magnetic ring 6 attract each other. The outer wall of the first convex ring 503 of the first linkage 5 abuts against the inner wall of the second convex ring 102 of the rotating rod 101. The drive component 8 provides power to the rotating rod 101, which drives the mounting base 1 to rotate around the axis of the rotating rod 101. The flexible ureteroscope 12 mounted on the mounting base 1 rotates around its own axis. Medical personnel can bend the flexible tubing through the above operations.

[0040] This application controls the start and stop of the electromagnetic component 7 by pressing a button, drives the first linkage component 5 to slide to different positions, and switches the transmission connection between the drive component 8 and the transmission rod 3 or the rotating rod 101. Medical personnel can switch the rotation mode of the flexible ureteroscope 12 according to their own needs, so that the tubing bends in the target direction, reducing the need for manual rotation by medical personnel and reducing the physical exertion of medical personnel.

[0041] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0042] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A flexible ureteroscope bending device, characterized in that, include: Mounting base (1) is used to support a flexible ureteroscope. The end of the mounting base (1) is provided with a rotating rod (101), which is rotatably mounted on the base (2). The rotating rod (101) is coaxially rotatably connected to a transmission rod (3). One end of the transmission rod (3) extending out of the rotating rod (101) is connected to the curved handle of the flexible ureteroscope (12) for driving the curved handle to rotate. The shift assembly is connected to the base (2). The shift assembly includes a housing (4). A first linkage member (5) is slidably provided in the housing (4). The sliding direction of the first linkage member (5) is parallel to the axis of the transmission rod (3). By sliding the first linkage member (5), the first linkage member (5) is connected to the transmission rod (3) or the rotating rod (101). The driving component (8) is connected to the first linkage component (5) for driving the first linkage component (5) to rotate.

2. The ureteroscope bending device according to claim 1, characterized in that, The shifting assembly also includes a magnetic ring (6), which is slidably disposed in the inner cavity of the housing (4). The first linkage (5) is coaxially disposed inside the magnetic ring (6) and is fixed to the magnetic ring (6). An electromagnetic component (7) is provided on the side of the magnetic ring (6) away from the rotating rod (101), and the electromagnetic component (7) is fixedly connected to the housing (4). When the electromagnetic component (7) is not energized, the magnetic ring (6) attracts the electromagnetic component (7), and the first linkage component (5) and the rotating rod (101) are connected in transmission. When the electromagnetic component (7) is energized, the magnetic ring (6) repels the electromagnetic component (7), and the first linkage component (5) and the transmission rod (3) are connected in transmission.

3. The ureteroscope bending device according to claim 2, characterized in that, The drive member (8) is located at one end of the housing (4) away from the base (2), and the output shaft of the drive member (8) extends into the inner cavity of the housing (4). A second linkage member (9) is connected between the output shaft and the first linkage member (5).

4. The ureteroscope bending device according to claim 3, characterized in that, The first linkage (5) has a first docking groove (501) and a second docking groove (502) at both ends along its own axis. Compared with the first docking groove (501), the second docking groove (502) is closer to the driving member (8). The first docking groove (501) is inserted into the transmission rod (3), and the second docking groove (502) is inserted into the second linkage (9).

5. The ureteroscope bending device according to claim 4, characterized in that, The transmission rod (3) has a tapered portion at one end near the driving member (8). The diameter of the tapered portion gradually decreases towards the driving member (8). The first docking groove (501) is specifically a conical groove with a friction surface on its inner wall. The first docking groove (501) can press and fit tightly with the tapered portion so that the transmission rod (3) rotates when the first linkage member (5) rotates.

6. The ureteroscope bending device according to claim 4, characterized in that, The second docking groove (502) is specifically a rib groove, which is used to restrict the relative rotation of the second linkage (9) and the first linkage (5) about their axis.

7. The ureteroscope bending device according to claim 4, characterized in that, The first docking groove (501) has a first protruding ring (503) on the outer periphery of its port, and the rotating rod (101) has a second protruding ring (102) on the inner wall of its port near the driving member (8). The outer diameter of the first protruding ring (503) is smaller than the inner diameter of the rotating rod (101), and the outer wall of the first protruding ring (503) is in close contact with the inner wall of the second protruding ring (102).

8. The ureteroscope bending device according to claim 1, characterized in that, Both the mounting base (1) and the base (2) are specifically L-shaped bent plates. The rotating rod (101) is vertically arranged on the side wall of the bent part of the mounting base (1), and the rotating rod (101) is vertically inserted into the bent part of the base (2).

9. The ureteroscope bending device according to claim 1, characterized in that, The curved handle includes a rotating base (10), the end of the transmission rod (3) extends into the inner cavity of the rotating base (10), and a rotating disk (11) is rotatably provided at the port of the rotating base (10). The rotating disk (11) carries the ureteroscope (12), and the edge of the rotating disk (11) facing the mounting base (1) is provided with a drive tooth (1101), which is connected to the transmission rod (3) in a transmission connection.

10. The ureteroscope bending device according to claim 9, characterized in that, A reinforcing plate (13) is provided between the rotating base (10) and the bent portion of the mounting base (1), and the transmission rod (3) is vertically inserted into the reinforcing plate (13).