Damping locking cantilever for surgical navigation robot

Abstract

The damping locking cantilever used in the surgical navigation robot comprises a support connecting base, a fixing base, a spherical hinge assembly connected with an optical positioning device and a connecting arm connected between the fixing base and the spherical hinge assembly, the fixing base is rotationally connected with the support connecting base, a rotating column is connected to the support connecting base, and the spherical hinge assembly is connected with the rotating column. A clamping groove allowing the rotating column to be inserted therein is formed in the fixing base, a plug screw is arranged on the fixing base in a penetrating mode, one end of the plug screw extends into the clamping groove and is in threaded connection with the rotating column, a plastic spacer bush is installed between the rotating column and the inner side wall of the clamping groove in the circumferential direction, and a first locking rotary knob is in threaded connection with the outer side wall of the fixing base. One end of the first locking knob extends into the clamping groove and abuts against the plastic spacer bush. The first locking knob is screwed tightly, so that the first locking knob abuts against the plastic spacer bush, the friction force between the plastic spacer bush and the rotating column of the support connecting base is improved, the stability of the fixing base in the rotating process is improved, and the whole structure is convenient to adjust and easy to operate.

Description

Technical Field

[0001] This application relates to the field of robot-assisted devices, and in particular to a damped locking cantilever for use in surgical navigation robots. Background Technology

[0002] In modern medicine, especially during complex joint replacement surgeries, the use of robotic-assisted devices has become a trend. Among these, optical positioning devices, as a key component of surgical navigation systems, play a crucial role in the surgical process. They not only adjust the field of view according to the patient's condition to ensure the surgeon has the optimal perspective, but also need to be stably locked in the new position after adjustment to continuously provide accurate navigation information. However, traditional positioning devices often suffer from inconvenient adjustment and unreliable locking, especially when frequent position adjustments are required. These shortcomings can affect the surgical procedure and therefore require improvement. Utility Model Content

[0003] To address the shortcomings of existing technologies, this application provides a damped locking cantilever for use in surgical navigation robots, aiming to solve the aforementioned problems.

[0004] A damping locking cantilever for use in a surgical navigation robot includes a support connecting seat, a fixed seat, a ball joint assembly connected to an optical positioning device, and a connecting arm connected between the fixed seat and the ball joint assembly. The fixed seat is rotatably connected to the support connecting seat. A rotating column is connected to the support connecting seat. The fixed seat has a slot for inserting the rotating column. A plug screw passes through the fixed seat. One end of the plug screw extends into the slot and is threadedly connected to the rotating column. A plastic spacer is installed circumferentially between the rotating column and the inner sidewall of the slot. A first locking knob is threadedly connected to the outer sidewall of the fixed seat. One end of the first locking knob extends into the slot and abuts against the plastic spacer.

[0005] By adopting the above technical solution, tightening the first locking knob will cause the first locking knob to press against the plastic spacer, thereby increasing the friction between the plastic spacer and the rotating column of the bracket connecting seat, thus improving the damping between the fixed seat and the bracket connecting seat, and improving the stability of the fixed seat when rotating. The whole structure is easy to adjust and simple to operate.

[0006] Optionally, a fixed base support plate is bolted to the fixed base, one end of the connecting arm is rotatably connected between the fixed base and the fixed base support plate, one end of the connecting arm is provided with a central shaft, one end of the central shaft is connected with a D-shaped shaft end, a D-shaped groove is provided on the side wall of the fixed base for the D-shaped shaft end to be inserted, and a second locking knob is provided on the fixed base support plate, one end of the second locking knob is threaded to one end of the central shaft.

[0007] By adopting the above technical solution, rotating the second locking knob causes it to be screwed into the central shaft. The central shaft then tightens the D-shaped shaft end, causing the D-shaped shaft end and the fixed base support plate to press against the connecting arm, thereby maintaining the damping feel of the connecting arm and improving its stability.

[0008] Optionally, damping pads are provided at both ends of the connecting arm.

[0009] By adopting the above technical solution, the damping pad enables the connecting arm to maintain a certain damping effect even when it is not locked, so that the connecting arm can remain relatively stable when it is not locked.

[0010] Optionally, the ball joint assembly includes a ball joint base, a wedge-shaped locking block, a third locking knob, a ball joint shaft, and a movable ball head. The ball joint base has a ball bladder for the movable ball head to be inserted into. The wedge-shaped locking block is installed inside the ball bladder. One end of the wedge-shaped locking block is shaped like a ball socket and fits against the movable ball head, while the other end is an arc-shaped end. The third locking knob is threaded onto the ball joint base. One end of the third locking knob extends into the ball bladder and abuts against the arc-shaped end of the wedge-shaped locking block.

[0011] By adopting the above technical solution, rotating the third locking knob causes it to press against the wedge-shaped locking block, thereby increasing the friction between the wedge-shaped locking block and the movable ball head, and thus increasing the stability of the ball joint shaft.

[0012] Optionally, a support spring is installed inside the spherical base of the ball joint, with one end of the support spring abutting against the wedge-shaped locking block and the other end abutting against the inner wall of the spherical base.

[0013] By adopting the above technical solution, the support spring can provide a supporting force to the wedge-shaped locking block, so that the wedge-shaped locking block presses against the movable ball head, and the movable ball head always maintains a certain damping feeling.

[0014] Optionally, one end of the ball joint shaft is connected to an adapter plate for connecting an optical positioning device.

[0015] By adopting the above technical solution, the optical positioning device is fixed to the adapter plate with bolts, making it easy to assemble and disassemble.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. Tighten the first locking knob so that it presses against the plastic spacer, increasing the friction between the plastic spacer and the rotating column of the bracket connecting seat, thereby increasing the damping between the fixed seat and the bracket connecting seat, and improving the stability of the fixed seat when rotating. The whole structure is easy to adjust and simple to operate.

[0018] 2. Rotate the second locking knob so that it is screwed into the central shaft. The central shaft tightens the D-shaped shaft end, causing the D-shaped shaft end and the fixed base support plate to press against the connecting arm, thereby maintaining the damping feel of the connecting arm and improving its stability.

[0019] 3. The support spring provides a supporting force to the wedge-shaped locking block, causing the wedge-shaped locking block to press against the movable ball head, so that the movable ball head always maintains a certain damping sensation. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0021] Figure 2 This is a cross-sectional schematic diagram of the fixed base and the bracket connection base in the embodiments of this application.

[0022] Figure 3 This is a cross-sectional view of the fixed base and the bracket connecting base in the embodiments of this application from another perspective.

[0023] Figure 4 This is a schematic diagram of the structure of the fixed base and the central shaft in the embodiments of this application.

[0024] Figure 5 This is a cross-sectional schematic diagram of the ball joint assembly in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Bracket Connector; 11. Rotating Column; 2. Fixed Base; 21. Slot; 22. First Locking Knob; 23. Fixed Base Support Plate; 24. D-Slot; 25. Second Locking Knob; 3. Ball Joint Assembly; 31. Ball Joint Base; 311. Ball Bladder; 312. Support Spring; 32. Wedge Locking Block; 33. Third Locking Knob; 34. Ball Joint Shaft; 35. Movable Ball Head; 4. Connecting Arm; 41. Central Shaft; 411. D-Shaped Shaft End; 42. Damping Pad; 5. Plug Screw; 6. Plastic Spacer; 7. Adapter Plate. Detailed Implementation

[0027] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0029] This application discloses a damped locking cantilever for use in a surgical navigation robot. (Refer to...) Figure 1 and Figure 2 The system includes a bracket connecting seat 1, a fixed seat 2, a ball joint assembly 3 connected to the optical positioning device, and a connecting arm 4 connecting the fixed seat 2 and the ball joint assembly 3. The fixed seat 2 is rotatably connected to the bracket connecting seat 1. A rotating column 11 is fixedly connected to the bracket connecting seat 1, and a slot 21 for inserting the rotating column 11 is provided on the fixed seat 2. A stop screw 5 is inserted through the upper end of the fixed seat 2, and one end of the stop screw 5 extends into the slot 21 and is threadedly connected to the rotating column 11. A plastic spacer 6 is installed circumferentially between the rotating column 11 and the inner sidewall of the slot 21. A first locking knob 22 is threadedly connected to the outer sidewall of the fixed seat 2, and one end of the first locking knob 22 extends into the slot 21 and abuts against the plastic spacer 6. Tighten the first locking knob 22 so that it presses against the plastic spacer 6, increasing the friction between the plastic spacer 6 and the rotating column 11 of the bracket connecting seat 1, thereby increasing the damping between the fixed seat 2 and the bracket connecting seat 1, and improving the stability of the fixed seat 2 when rotating. The whole structure is easy to adjust and simple to operate.

[0030] Reference Figure 3 and Figure 4 A fixed base support plate 23 is bolted to the fixed base 2. One end of the connecting arm 4 is rotatably connected between the fixed base 2 and the fixed base support plate 23. A central shaft 41 passes through one end of the connecting arm 4, and a D-shaped shaft end 411 is fixedly connected to one end of the central shaft 41. A D-shaped groove 24 is provided on the side wall of the fixed base 2 for the D-shaped shaft end 411 to be inserted. A second locking knob 25 passes through the fixed base support plate 23, and one end of the second locking knob 25 is threaded to the end of the central shaft 41 away from the D-shaped shaft end 411. Rotating the second locking knob 25 causes it to screw into the central shaft 41, which tightens the D-shaped shaft end 411. This causes the D-shaped shaft end 411 and the fixed base support plate 23 to press the connecting arm 4, thereby maintaining the damping feel of the connecting arm 4 and improving its stability.

[0031] Reference Figure 3 and Figure 4 Damping pads 42 are installed at both ends of the connecting arm 4. The damping pads 42 enable the connecting arm 4 to maintain a certain damping effect even when it is not locked, so that the connecting arm 4 can remain relatively stable when it is not locked.

[0032] Reference Figure 5 The ball joint assembly 3 includes a ball joint base 31, a wedge-shaped locking block 32, a third locking knob 33, a ball joint shaft 34, and a movable ball head 35. The ball joint base 31 is fixedly connected to the end of the connecting arm 4 away from the fixed base 2. A ball bladder 311 is provided inside the ball joint base 31 for the movable ball head 35 to engage. The wedge-shaped locking block 32 is installed inside the ball bladder 311, with one end being a ball-and-socket shape that fits against the movable ball head 35, and the other end being an arc-shaped end. The third locking knob 33 is threaded onto the ball joint base 31, with one end extending into the ball bladder 311 and abutting against the arc-shaped end of the wedge-shaped locking block 32. Rotating the third locking knob 33 causes it to press against the wedge-shaped locking block 32, thereby increasing the friction between the wedge-shaped locking block 32 and the movable ball head 35, and thus increasing the stability of the ball joint shaft 34.

[0033] Reference Figure 5 A support spring 312 is installed inside the ball joint base 31's bladder 311. One end of the support spring 312 abuts against the wedge-shaped locking block 32, and the other end abuts against the inner wall of the bladder 311. The support spring 312 provides a supporting force to the wedge-shaped locking block 32, causing the wedge-shaped locking block 32 to press against the movable ball head 35, thus ensuring that the movable ball head 35 always maintains a certain degree of damping.

[0034] Reference Figure 1 and Figure 5 One end of the ball joint shaft 34 is fixedly connected to an adapter plate 7 for connecting an optical positioning device. The optical positioning device is fixed to the adapter plate 7 with bolts, making it easy to assemble and disassemble.

[0035] The implementation principle of a damping locking cantilever in a surgical navigation robot according to an embodiment of this application is as follows: tighten the first locking knob 22 so that the first locking knob 22 presses against the plastic spacer 6, increasing the friction between the plastic spacer 6 and the rotating column 11 of the bracket connecting seat 1, thereby increasing the damping between the fixed seat 2 and the bracket connecting seat 1, and improving the stability of the fixed seat 2 when rotating. The whole structure is easy to adjust and simple to operate.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A damped locking cantilever for use in a surgical navigation robot, characterized in that: The device includes a bracket connecting seat (1), a fixed seat (2), a ball joint assembly (3) connected to an optical positioning device, and a connecting arm (4) connecting the fixed seat (2) and the ball joint assembly (3). The fixed seat (2) is rotatably connected to the bracket connecting seat (1). A rotating column (11) is connected to the bracket connecting seat (1). The fixed seat (2) has a slot (21) for the rotating column (11) to be inserted. A plug screw (5) is passed through the fixed seat (2). One end of the plug screw (5) extends into the slot (21) and is threadedly connected to the rotating column (11). A plastic spacer (6) is installed circumferentially between the rotating column (11) and the inner sidewall of the slot (21). A first locking knob (22) is threadedly connected to the outer sidewall of the fixed seat (2). One end of the first locking knob (22) extends into the slot (21) and abuts against the plastic spacer (6).

2. A damping locking cantilever for use in a surgical navigation robot according to claim 1, characterized in that: A fixed base support plate (23) is bolted to the fixed base (2). One end of the connecting arm (4) is rotatably connected between the fixed base (2) and the fixed base support plate (23). A central shaft (41) is passed through one end of the connecting arm (4). A D-shaped shaft end (411) is connected to one end of the central shaft (41). A D-shaped groove (24) is opened on the side wall of the fixed base (2) for the D-shaped shaft end (411) to be inserted. A second locking knob (25) is passed through the fixed base support plate (23). One end of the second locking knob (25) is threaded to one end of the central shaft (41).

3. A damping locking cantilever for use in a surgical navigation robot according to claim 2, characterized in that: Damping pads (42) are provided at both ends of the connecting arm (4).

4. A damping locking cantilever for use in a surgical navigation robot according to claim 1, characterized in that: The ball joint assembly (3) includes a ball joint base (31), a wedge-shaped locking block (32), a third locking knob (33), a ball joint shaft (34), and a movable ball head (35). The ball joint base (31) has a ball bladder (311) for the movable ball head (35) to be inserted into. The wedge-shaped locking block (32) is installed in the ball bladder (311). One end of the wedge-shaped locking block (32) is shaped like a ball socket and fits against the movable ball head (35), while the other end is an arc-shaped end. The third locking knob (33) is threaded onto the ball joint base (31). One end of the third locking knob (33) extends into the ball bladder (311) and abuts against the arc-shaped end of the wedge-shaped locking block (32).

5. A damping locking cantilever for use in a surgical navigation robot according to claim 4, characterized in that: A support spring (312) is installed inside the balloon (311) of the ball joint base (31). One end of the support spring (312) abuts against the wedge-shaped locking block (32), and the other end abuts against the inner wall of the balloon (311).

6. A damping locking cantilever for use in a surgical navigation robot according to claim 5, characterized in that: One end of the ball joint shaft (34) is connected to an adapter plate (7) for connecting an optical positioning device.

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