Ball head lock pin regulator

Abstract

The utility model relates to a ball head lock pin adjuster which comprises a clamping piece, an adjusting block connected with the clamping piece and a lock head connected to the adjusting block through a ball head rod, the ball head rod comprises a ball head clamped in the adjusting block and a connecting rod fixedly arranged on the ball head, and the connecting rod is fixedly connected with the lock head. A through lock hole is formed in the lock head, a first screw hole communicated with the lock hole is formed in the lock head, a puller bolt is arranged in the first screw hole, and a handle is arranged at the outer end of the puller bolt. The ball head lock pin adjuster is composed of a puller bolt, a lock head, an adjusting block, a ball head rod, a threaded column and a clamping piece, the ball head lock pin adjuster is simple and light in structure and convenient to produce and assemble, the ball head lock pin adjuster is fixed to the pelvis fixator through the clamping piece, a bone pin can be locked by rotating a handle, and operation is easy and convenient. The ball head can freely rotate and incline within a certain range, and the ball head is locked by rotating the adjusting block, so that the direction of the bone needle can be flexibly adjusted in a three-dimensional space.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic surgery technology, and in particular to a ball-head locking pin adjuster. Background Technology

[0002] The pelvis is an important part of the human skeleton, containing vital organs and important blood vessels and nerves that control the lower limbs. With the development of industries such as construction and transportation, traffic accidents and other personal injury accidents are frequent in daily life, with a year-on-year increase in patients with multiple injuries including pelvic and acetabular fractures. Pelvic fractures are a serious form of trauma, often accompanied by damage to pelvic organs, blood vessels, and nerves. If not treated promptly, they can seriously endanger the patient's life. The traditional treatment method is open reduction of the fracture site. While this method allows direct visualization of the injured area, the large incision and extensive soft tissue dissection required for pelvic surgery increase the risk of damage to important blood vessels and nerves, as well as the risk of wound infection. It also leads to significant bleeding during treatment, which can severely endanger the patient's life. Closed reduction of pelvic fractures has the advantages of smaller incisions, reduced risk of infection, less damage to blood vessels and nerves in the surgical area, and faster recovery. The locking pin adjuster plays a crucial role. Once the bone pin is adjusted to the appropriate position, the adjusting device can fix it in place, preventing displacement during subsequent procedures and ensuring the stability and safety of the fracture site throughout the treatment process. To address this, this invention provides a simple and flexible ball-head locking pin adjuster. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a ball-head locking pin adjuster that is easy to operate and flexible to use.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0005] A ball-head locking pin adjuster includes a clamping member, an adjusting block connected to the clamping member, and a locking head connected to the adjusting block via a ball-head rod. The ball-head rod includes a ball head locked within the adjusting block and a connecting rod fixed to the ball head. The connecting rod is fixedly connected to the locking head. The locking head has a through-hole and a first screw hole communicating with the through-hole. A tightening bolt is disposed in the first screw hole, and a handle is provided at the outer end of the tightening bolt.

[0006] In one embodiment of this utility model, the adjusting block is cylindrical, with a through third screw hole in its middle part along the axial direction, and a retaining ring with an inner diameter smaller than the diameter of the ball head is provided at the top edge of the third screw hole.

[0007] The third screw hole is screwed with a first threaded post, the upper end face of which is provided with a spherical groove that matches the profile of the ball head, and the lower end of the first threaded post is connected to the clamping member.

[0008] In one embodiment of this utility model, the clamping member includes an upper clamping block and a lower clamping block. The upper clamping block and the lower clamping block are respectively provided with corresponding first through holes and second through holes. The lower end of the first threaded post is coaxially fixed with a second threaded post. The lower end of the second threaded post passes through the first through hole and the second through hole and is screwed with a nut. The bottom surface of the upper clamping block and the top surface of the lower clamping block are provided with corresponding arc-shaped grooves.

[0009] In one embodiment of this utility model, the bottom surface of the upper clamping block is fixed with an insert block, and the top surface of the lower clamping block is provided with a slot corresponding to the insert block.

[0010] In one embodiment of this utility model, a locking block is provided between the first threaded post and the second threaded post, and a locking groove corresponding to the locking block is provided on the top of the upper clamping block.

[0011] In one embodiment of this utility model, the bottom edge of the upper clamping block is provided with a first arc-shaped groove and a second arc-shaped groove with different diameters, and the top edge of the lower clamping block is provided with a third arc-shaped groove corresponding to the first arc-shaped groove and a fourth arc-shaped groove corresponding to the second arc-shaped groove.

[0012] In one embodiment of this utility model, the bottom of the second through hole is a conical hole with a smaller inner diameter and a larger outer diameter, and a conical gasket is provided inside the conical hole.

[0013] In one embodiment of this utility model, the lock head is a horizontally arranged cylinder, the lock hole is arranged along its axis, the first screw hole is arranged at the top along the radial direction of the lock head, the bottom of the lock head is arranged with a second screw hole along its radial direction, the connecting rod is arranged radially along the ball head, the connecting rod is provided with external threads, and the connecting rod is screwed into the second screw hole.

[0014] In one embodiment of this utility model, the first screw hole and the second screw hole are coaxially arranged.

[0015] In one embodiment of this utility model, the adjusting block is vertically arranged and has cutting planes symmetrically arranged on its side; the clamping member is cylindrical in shape.

[0016] The beneficial effects of adopting the above technical solution are as follows:

[0017] The ball-head locking pin adjuster provided by this utility model consists of a tightening bolt, a locking head, an adjusting block, a ball-head rod, a threaded post, and a clamping component. Its structure is simple and lightweight, easy to manufacture and assemble. The clamping component fixes the ball-head locking pin adjuster to the pelvic fixator, and the bone pin can be locked by rotating the handle. Operation is simple. The ball head can rotate and tilt freely within a certain range, and the ball head is locked by rotating the adjusting block, allowing the bone pin to flexibly adjust its direction in three-dimensional space. It is particularly suitable for fractures of complex structures such as the pelvis. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0020] Figure 3 This is an exploded structural diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the adjusting block in this utility model.

[0022] Figure 5 This is a schematic diagram of the adjustment block from another angle in this utility model.

[0023] Figure 6 This is a schematic diagram of the ball head rod in this utility model.

[0024] Figure 7 This is a schematic diagram of the threaded column in this utility model.

[0025] Figure 8 This is a schematic diagram of the threaded column from another angle in this utility model.

[0026] Figure 9 This is a schematic diagram of the clamping component in this utility model.

[0027] Figure 10 This is a schematic diagram of the clamping component from another angle in this utility model.

[0028] Figure 11 This is a schematic diagram of the upper clamping block in this utility model.

[0029] Figure 12 This is a schematic diagram of the structure of the lower clamping block in this utility model.

[0030] Figure 13 This is a schematic diagram of the conical gasket in this utility model.

[0031] Figure 14 This is a schematic diagram of the usage state of this utility model.

[0032] The components are as follows: 1. Handle, 2. Tightening bolt, 3. Lock head, 4. First screw hole, 401. Second screw hole, 5. Lock hole, 6. Adjusting block, 7. Third screw hole, 8. Retaining ring, 9. Cutting plane, 10. Ball head, 11. Connecting rod, 12. First threaded post, 13. Groove, 14. Locking block, 15. Second threaded post, 16. Upper clamping block, 17. Locking groove, 18. First through hole, 19. First arc groove, 20. Second arc groove, 21. Insert block, 22. Lower clamping block, 23. Second through hole, 24. Third arc groove, 25. Fourth arc groove, 26. Slot, 27. Tapered hole, 28. Nut, 29. Tapered washer, 30. Bone pin, 31. Fixing rod. Detailed Implementation

[0033] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be clearly and completely described below in conjunction with specific embodiments.

[0034] like Figures 1-3 The ball-head locking pin adjuster shown includes a clamping member, an adjusting block 6 connected to the clamping member, and a locking head 3 connected to the adjusting block 6 via a ball-head rod. The ball-head rod includes a ball head 10 locked in the adjusting block 6 and a connecting rod 11 fixed on the ball head 10. The connecting rod 11 is fixedly connected to the locking head 3. The locking head 3 is provided with a through locking hole 5 and a first screw hole 4 communicating with the locking hole 5. A tightening bolt 2 is provided in the first screw hole 4. The outer end of the tightening bolt 2 is provided with a handle 1. After inserting the bone pin 30 into the locking hole 5, the bone pin 30 can be locked by rotating the handle 1.

[0035] The ball-head locking pin adjuster consists of a tightening bolt 2, a locking head 3, an adjusting block 6, a ball-head rod, threaded posts (first threaded post 12 and second threaded post 15), and a clamping component. Its structure is simple and lightweight, easy to manufacture and assemble. The clamping component secures the ball-head locking pin adjuster to the pelvic fixator, and the bone pin 30 can be locked by rotating the handle 1, making operation simple. The ball head 10 can rotate and tilt freely within a certain range, and is locked by rotating the adjusting block 6, allowing the bone pin 30 to flexibly adjust its direction in three-dimensional space. This is particularly suitable for fractures of complex structures such as the pelvis.

[0036] like Figures 4-8 As shown, in this embodiment, the adjusting block 6 is cylindrical, with a through third screw hole 7 in its middle part along the axial direction, and a retaining ring 8 with an inner diameter smaller than the diameter of the ball head 10 is provided at the top edge of the third screw hole 7.

[0037] The third screw hole 7 is screwed with a first threaded post 12. The upper end face of the first threaded post 12 is provided with a spherical groove 13 that matches the contour of the ball head 10. The lower end of the first threaded post 12 is connected to the clamping member.

[0038] like Figures 9-12 As shown, the clamping member includes an upper clamping block 16 and a lower clamping block 22. The upper clamping block 16 and the lower clamping block 22 are respectively provided with corresponding first through holes 18 and second through holes 23. The lower end of the first threaded post 12 is coaxially fixed with a second threaded post 15. The lower end of the second threaded post 15 passes through the first through hole 18 and the second through hole 23 and is screwed with a nut 28. The bottom surface of the upper clamping block 16 and the top surface of the lower clamping block 22 are provided with corresponding arc-shaped grooves.

[0039] As a further optimization, such as Figure 10 and Figure 12 As shown, the bottom surface of the upper clamping block 16 is fixed with an insert 21, and the top surface of the lower clamping block 22 is provided with a slot 26 corresponding to the insert 21. By providing the insert 21 and the slot 26, relative rotation between the upper clamping block 16 and the lower clamping block 22 can be prevented.

[0040] like Figure 8 and Figure 11 As shown, a locking block 14 is provided between the first threaded post 12 and the second threaded post 15, and a locking groove 17 corresponding to the locking block 14 is provided on the top of the upper clamping block 16. By providing the locking block 14 and the locking groove 17, relative rotation between the threaded post and the upper clamping block 16 can be prevented. In this embodiment, both the locking block 14 and the locking groove 17 are large arc shapes composed of a large arc and a chord.

[0041] like Figure 2 As shown, the upper clamping block 16 has a first arc-shaped groove 19 and a second arc-shaped groove 20 with different diameters at its bottom edge, and the lower clamping block 22 has a third arc-shaped groove 24 corresponding to the first arc-shaped groove 19 and a fourth arc-shaped groove 25 corresponding to the second arc-shaped groove 20 at its top edge. By providing two sets of arc-shaped grooves of different sizes, the clamping component can be fixed to the fixing rods 31 of different thicknesses in the pelvic fixator.

[0042] like Figure 10 and Figure 13 As shown, the bottom of the second through hole 23 is a tapered hole 27 with a smaller inner diameter and a larger outer diameter, and a tapered gasket 29 is provided inside the tapered hole 27. By providing the tapered gasket 29, the clamping component can be secured more firmly.

[0043] The lock head 3 is a horizontally positioned cylinder. The lock hole 5 is positioned along its axis. The first screw hole 4 is located at the top along the radial direction of the lock head 3. The bottom of the lock head 3 has a second screw hole 401 along the radial direction of its axis. The connecting rod 11 is arranged radially along the ball head 10. The connecting rod 11 has external threads and is screwed into the second screw hole 401. The first screw hole 4 and the second screw hole 401 are coaxial. The second threaded hole 401 may or may not be connected to the lock hole 5. Alternatively, the second threaded hole 401 may not have threads, and the connecting rod 11 can be inserted and fixed directly by welding.

[0044] The adjusting block 6 is a vertically arranged cylinder with symmetrical cutting planes 9 on its side, which facilitates the rotation of the adjusting block 6 and the locking of the ball head 10. The clamping component is cylindrical in shape as a whole, with both the upper clamping block 16 and the lower clamping block 22 being cylindrical.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ball-head locking pin adjuster, characterized in that: It includes a clamping component, an adjusting block (6) connected to the clamping component, and a lock head (3) connected to the adjusting block (6) via a ball head rod. The ball head rod includes a ball head (10) locked in the adjusting block (6) and a connecting rod (11) fixed on the ball head (10). The connecting rod (11) is fixedly connected to the lock head (3). The lock head (3) is provided with a through lock hole (5). The lock head (3) is provided with a first screw hole (4) connected to the lock hole (5). A tightening bolt (2) is provided in the first screw hole (4). A handle (1) is provided at the outer end of the tightening bolt (2).

2. The ball-head locking pin adjuster according to claim 1, characterized in that: The adjusting block (6) is cylindrical, with a through third screw hole (7) in the middle along the axial direction. A retaining ring (8) with an inner diameter smaller than that of the ball head (10) is provided at the top edge of the third screw hole (7). The third screw hole (7) is screwed with a first threaded post (12), the upper end face of the first threaded post (12) is provided with a spherical groove (13) that matches the contour of the ball head (10), and the lower end of the first threaded post (12) is connected to the clamping member.

3. The ball-head locking pin adjuster according to claim 2, characterized in that: The clamping component includes an upper clamping block (16) and a lower clamping block (22). The upper clamping block (16) and the lower clamping block (22) are respectively provided with a first through hole (18) and a second through hole (23). The lower end of the first threaded post (12) is coaxially fixed with a second threaded post (15). The lower end of the second threaded post (15) passes through the first through hole (18) and the second through hole (23) and is screwed with a nut (28). The bottom surface of the upper clamping block (16) and the top surface of the lower clamping block (22) are provided with corresponding arc-shaped grooves.

4. A ball-head locking pin adjuster according to claim 3, characterized in that: The bottom surface of the upper clamping block (16) is fixed with an insert (21), and the top surface of the lower clamping block (22) is provided with a slot (26) corresponding to the insert (21).

5. A ball-head locking pin adjuster according to claim 4, characterized in that: A locking block (14) is provided between the first threaded post (12) and the second threaded post (15), and a slot (17) corresponding to the locking block (14) is provided on the top of the upper clamping block (16).

6. A ball-head locking pin adjuster according to any one of claims 3-5, characterized in that: The upper clamping block (16) has a first arc groove (19) and a second arc groove (20) with different diameters at its bottom edge, and the lower clamping block (22) has a third arc groove (24) corresponding to the first arc groove (19) and a fourth arc groove (25) corresponding to the second arc groove (20) at its top edge.

7. A ball-head locking pin adjuster according to claim 6, characterized in that: The bottom of the second through hole (23) is a tapered hole (27) with a smaller inner diameter and a larger outer diameter, and a tapered gasket (29) is provided inside the tapered hole (27).

8. A ball-head locking pin adjuster according to claim 1, characterized in that: The lock head (3) is a horizontally arranged cylindrical shape, the lock hole (5) is arranged along its axis, the first screw hole (4) is arranged at the top along the radial direction of the lock head (3), the bottom of the lock head (3) is arranged with a second screw hole (401) along its radial direction, the connecting rod (11) is arranged in a radial manner along the ball head (10), the connecting rod (11) is provided with external threads, and the connecting rod (11) is screwed into the second screw hole (401).

9. A ball-head locking pin adjuster according to claim 8, characterized in that: The first screw hole (4) and the second screw hole (401) are coaxially arranged.

10. A ball-head locking pin adjuster according to claim 1, characterized in that: The adjusting block (6) is vertically arranged, and its side is symmetrically provided with cutting planes (9); the clamping member is cylindrical in shape.

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