Single-arm integrated external fixing support hinge
By introducing a worm gear mechanism into the hinge of a single-arm, single-body external fixation bracket, the problem of difficulty in achieving longitudinal angle adjustment in existing technologies is solved, thereby improving the longitudinal angle adjustment of the bracket and enhancing operational safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN HONGLIYUAN AUTO PARTS CO LTD
- Filing Date
- 2025-01-09
- Publication Date
- 2026-04-14
AI Technical Summary
The existing single-arm, single-body external fixation frame hinges are difficult to adjust longitudinally, requiring adjustment of the traction pin, which is difficult to operate.
A hinge for a single-arm, single-body external fixation bracket was designed. It adopts a worm gear mechanism, in which the worm drives the worm wheel and the mounting shaft to rotate, thereby realizing the longitudinal angle adjustment of the connecting parts. It also uses a hexagonal hole to cooperate with an L-shaped wrench to avoid accidental contact with the worm and improve operational safety.
The longitudinal angle of the single-arm, single-body external fixation brace has been adjusted, improving the effectiveness and safety of use and simplifying the operation process.
Smart Images
Figure CN224112740U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of orthopedic support connector technology, and more specifically, to a hinge for a single-arm external fixation bracket. Background Technology
[0002] A single-arm external fixator is a medical device used to externally reinforce bones after fracture or bone cutting surgery.
[0003] The hinge of a single-arm external fixation bracket is a connector used to adjust the angle of the external fixation bracket. However, the existing external fixation bracket hinge can only achieve horizontal angle adjustment between the external fixation brackets. When vertical angle adjustment is required, the traction pin also needs to be adjusted, which is quite difficult. Utility Model Content
[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a single-arm, single-body external fixation bracket hinge, which aims to solve the problems mentioned in the background art.
[0005] To solve the above problems, the present invention adopts the following technical solution:
[0006] A hinge for a single-arm external fixation brace, comprising:
[0007] A first connector and a second connector, wherein the second connector is rotatably connected to the first connector; and
[0008] An adjustment mechanism includes two mounting shells, which are respectively fixedly connected to the outer walls of a first connector and a second connector. A mounting shaft is rotatably embedded between the outer walls of each mounting shell, and a worm gear is fixedly sleeved on the outer surface of each mounting shaft. A worm is rotatably embedded between the inner walls of each mounting shell, and one end of each worm extends to the outside of the corresponding mounting shell. A clamping block is fixedly sleeved on the outer surface of each mounting shaft.
[0009] As a preferred embodiment of this utility model, each of the mounting shells has a groove on its top and each of the worm gears has a hexagonal hole at its top.
[0010] As a preferred embodiment of this utility model, each clamping block has two clamping plates fixedly connected to its outer wall.
[0011] As a preferred embodiment of this utility model, a locking bolt is movably inserted between the outer walls of each pair of clamping plates, and a locking nut is threaded onto the outer surface of each locking bolt.
[0012] As a preferred embodiment of this utility model, a transparent plate is fixedly embedded between the inner walls of the first connector, and an installation hole is provided through the top of the transparent plate.
[0013] As a preferred embodiment of this utility model, the top and bottom of the first connector are both equidistantly engraved with scales.
[0014] Beneficial effects
[0015] Compared with the prior art, this utility model provides a hinge for a single-arm, single-body external fixation bracket, which has the following advantages:
[0016] 1. In this solution, the first and second connecting parts are rotatably connected, which facilitates the lateral angle adjustment of the bracket. The clamping block is used to clamp and fix the traction needle mounting rod. The worm gear on the mounting shell rotates, which facilitates the rotation of the worm wheel, and then facilitates the rotation of the mounting shaft, thereby adjusting the longitudinal angle of the clamping block. This realizes the longitudinal angle adjustment of the single-arm, single-body external fixation bracket and improves its performance.
[0017] 2. In this solution, an L-shaped wrench is used, along with a hexagonal hole for easy operation of the worm gear, which can avoid accidental contact with the worm gear and improve the safety of the adjustment mechanism. The groove facilitates the use of the L-shaped wrench. Attached Figure Description
[0018] Figure 1 This is a perspective view of the present utility model;
[0019] Figure 2 This is an exploded view of the present invention;
[0020] Figure 3 This is a cross-sectional view of the present invention.
[0021] Explanation of the labels in the diagram:
[0022] 1. First connecting piece; 2. Second connecting piece; 3. Adjusting mechanism; 301. Mounting shell; 302. Mounting shaft; 303. Worm gear; 304. Worm; 305. Clamping block; 4. Hexagonal hole; 5. Clamping plate; 6. Locking bolt; 7. Locking nut; 8. Transparent plate; 9. Mounting hole; 10. Scale. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0024] Example:
[0025] Please see Figure 1-3 A hinge for a single-arm external fixation brace, comprising:
[0026] A first connector 1 and a second connector 2, wherein the second connector 2 is rotatably connected to the first connector 1; and
[0027] The adjustment mechanism 3 includes two mounting shells 301, which are fixedly connected to the outer walls of the first connector 1 and the second connector 2, respectively. A mounting shaft 302 is rotatably embedded between the outer walls of each mounting shell 301. A worm gear 303 is fixedly sleeved on the outer surface of each mounting shaft 302. A worm 304 is rotatably embedded between the inner walls of each mounting shell 301, and one end of each worm 304 extends to the outside of the corresponding mounting shell 301. A clamping block 305 is fixedly sleeved on the outer surface of each mounting shaft 302.
[0028] In this embodiment, the first connector 1 and the second connector 2 are rotatably connected to facilitate the lateral angle adjustment of the bracket. The clamping block 305 is used to clamp and fix the traction needle mounting rod. The worm gear 304 on the mounting shell 301 rotates to facilitate the rotation of the worm wheel 303, which in turn facilitates the rotation of the mounting shaft 302, thereby adjusting the longitudinal angle of the clamping block 305. This achieves the longitudinal angle adjustment of the single-arm, single-body external fixation bracket and improves its performance.
[0029] Please refer to the specific details. Figure 3 As shown, each mounting shell 301 has a groove on its top, and each worm gear 304 has a hexagonal hole 4 at its top.
[0030] In this embodiment, an L-shaped wrench is used, along with a hexagonal hole 4, to facilitate operation of the worm gear 304. This avoids accidental contact with the worm gear 304, improves the safety of the adjustment mechanism 3, and the groove facilitates the use of the L-shaped wrench.
[0031] Please refer to the specific details. Figure 2 As shown, each clamping block 305 has two clamping plates 5 fixedly connected to its outer wall.
[0032] In this embodiment, by bringing the two clamping plates 5 close to each other, it is convenient to reduce the inner diameter of the reserved hole in the clamping rod block 305, thereby facilitating the fixing of the traction needle mounting rod.
[0033] Please refer to the specific details. Figure 2 As shown, a locking bolt 6 is movably inserted between the outer walls of each pair of clamping plates 5, and a locking nut 7 is threaded onto the outer surface of each locking bolt 6.
[0034] In this embodiment, the stability of the clamping plate 5 is improved by using the locking bolt 6 and the locking nut 7 together.
[0035] Please refer to the specific details. Figure 2 As shown, a transparent plate 8 is fixedly embedded between the inner walls of the first connector 1, and an installation hole 9 is provided through the top of the transparent plate 8.
[0036] In this embodiment, the transparent plate 8 facilitates viewing of the patient's fracture site during installation, and the mounting hole 9 facilitates the installation of the traction needle.
[0037] Please refer to the specific details. Figure 2 As shown, the first connector 1 has 10 markings equidistantly engraved on its top and bottom.
[0038] In this embodiment, scale 10 facilitates recording when the first connector 1 and the second connector 2 rotate.
[0039] Working principle: During use, the first connecting piece 1 and the second connecting piece 2 are rotatably connected to facilitate the lateral angle adjustment of the bracket. The clamping block 305 is used to clamp and fix the traction needle mounting rod. The worm gear 304 on the mounting shell 301 rotates, driving the worm wheel 303 to rotate, which in turn drives the mounting shaft 302 to rotate, thereby adjusting the longitudinal angle of the clamping block 305. This realizes the longitudinal angle adjustment of the single-arm, single-body external fixation bracket and improves its performance.
[0040] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.
[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.
Claims
1. A hinge for a single-arm external fixation brace, characterized in that, include: A first connector (1) and a second connector (2), wherein the second connector (2) is rotatably connected to the first connector (1); as well as The adjustment mechanism (3) includes two mounting shells (301), which are respectively fixedly connected to the outer walls of the first connector (1) and the second connector (2). A mounting shaft (302) is rotatably embedded between the outer walls of each mounting shell (301). A worm gear (303) is fixedly sleeved on the outer surface of each mounting shaft (302). A worm (304) is rotatably embedded between the inner walls of each mounting shell (301), and one end of each worm (304) extends to the outside of the corresponding mounting shell (301). A clamping block (305) is fixedly sleeved on the outer surface of each mounting shaft (302).
2. The hinge of a single-arm external fixation bracket according to claim 1, characterized in that, Each of the mounting housings (301) has a groove on its top, and each of the worm gears (304) has a hexagonal hole (4) at its top.
3. The hinge for a single-arm external fixation bracket according to claim 2, characterized in that, Two clamping plates (5) are fixedly connected to the outer wall of each clamping block (305).
4. The hinge for a single-arm external fixation bracket according to claim 3, characterized in that, A locking bolt (6) is movably inserted between the outer walls of each pair of clamps (5), and a locking nut (7) is threaded onto the outer surface of each locking bolt (6).
5. The hinge of a single-arm external fixation bracket according to claim 4, characterized in that, A transparent plate (8) is fixedly embedded between the inner walls of the first connector (1), and an installation hole (9) is provided through the top of the transparent plate (8).
6. The hinge of a single-arm external fixation bracket according to claim 5, characterized in that, The first connector (1) has equidistant scales (10) engraved on its top and bottom.