Novel elbow joint external fixation support

Abstract

The utility model discloses a novel elbow joint external fixation support, which relates to the technical field of elbow joint fixation, and comprises two support bodies, a rotating mechanism is rotatably connected between the two support bodies, the support bodies are provided with fixed joints distributed in a linear array, the support bodies comprise two short rods arranged in parallel, and the short rods are connected with the rotating mechanism. The novel elbow joint external fixing support comprises a support body, a fixing joint is arranged on the support body, two through type first rod clamping grooves are formed in one side of the fixing joint, the short rods are connected with the first rod clamping grooves in the fixing joint in a sliding mode, and limiting assemblies for limiting the short rods to slide in cavities of the first rod clamping grooves are arranged on the fixing joint. Accordingly, the corresponding length of the elbow joint external fixation support can be adjusted according to the length of the arm of the patient, the applicability of the elbow joint external fixation support is effectively improved, the situation that life rehabilitation of the patient is affected due to the fact that the elbow joint external fixation support is too long and fixation is affected due to the fact that the elbow joint external fixation support is too short is avoided, and the applicability of the elbow joint external fixation support is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of elbow joint fixation technology, specifically a novel external fixation bracket for the elbow joint. Background Technology

[0002] The elbow joint is composed of the distal end of the humerus and the proximal articular surfaces of the radius and ulna. Structurally, it comprises three joints, all enclosed within a joint capsule. Injuries are common orthopedic conditions. In clinical orthopedic treatment of the elbow joint, the goal is to improve its range of motion while maintaining its stability, enabling early functional exercises after treatment. Currently, external fixators are typically used, with a vertically rotatable connecting section in the middle of the fixator.

[0003] In fracture treatment, doctors surgically insert metal pins into the fracture site to fix the bone in the correct position. Then, they use connecting rods and other fixation structures to connect and fix the individual metal pins. Currently, the connecting rod structure used in elbow joint external fixation devices is simple and its length is not adjustable. Therefore, when encountering patients with long or short arms, as well as different affected areas, the distance between the individual metal pins will vary. Thus, if the connecting rod is too long, it will affect the patient's daily life and rehabilitation treatment (causing obstacles), while if the connecting rod is too short, it will affect the connection and fixation of the individual metal pins, thereby reducing the applicability of elbow joint external fixation devices. Utility Model Content

[0004] The purpose of this invention is to provide a novel external fixation brace for the elbow joint, in order to solve the problem of low applicability of existing external fixation braces for the elbow joint.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel external fixation brace for the elbow joint, comprising two frames, a rotating mechanism rotatably connecting the two frames, fixed sections arranged in a linear array on the frames, the frames comprising two short rods arranged parallel to each other, two through-type first rod clamping grooves opened on one side of the fixed sections, the short rods being slidably connected to the first rod clamping grooves on the fixed sections, and a limiting component on the fixed sections restricting the sliding of the short rods within the cavity of the first rod clamping grooves.

[0006] Preferably, the rotating mechanism includes turntables arranged vertically and vertically. The bottom of the top turntable has a mounting groove, and a worm gear is rotatably connected to the inner wall of the mounting groove. The bottom of the worm gear is fixedly connected to the upper part of the bottom turntable, and a worm is meshed with one side of the worm gear. An adjustment mechanism is provided on the inner wall of the mounting groove, and the worm is rotatably connected to the adjustment mechanism. The bottom short bar on the right side of the frame is fixedly connected to the side wall of the bottom turntable.

[0007] Preferably, the adjusting mechanism includes a slider, a first threaded rod, and a threaded sleeve. The worm gear is rotatably connected to one side of the slider, the slider is slidably connected to the inner wall of the mounting groove, the inner wall of the mounting groove is formed with a through first rotating hole, the threaded sleeve is rotatably connected to the cavity of the first rotating hole, and the threaded sleeve is threaded onto the outside of the first threaded rod. One end of the first threaded rod is fixedly connected to one side of the slider.

[0008] Preferably, a limiting rod is fixedly connected to one side of the turntable at the top layer, and a moving block is slidably sleeved on the outer side of the limiting rod. A second threaded rod is threadedly connected to a threaded hole at one end of the limiting rod. A long rod is fixedly connected to one end of the second threaded rod, and the long rod is rotatably connected to a second rotating hole at one side of the moving block. The frame on the left side is fixedly connected to the left side of the moving block, and the top layer short rod on the frame on the left side is fixedly connected to one side of the moving block.

[0009] Preferably, the fixing section includes a rod-side clamp, a rod-needle center clamp, and a needle-side clamp arranged sequentially. Two first rod clamping slots are formed between the rod-side clamp and the rod-needle center clamp. Two parallel and through-type needle clamping slots are formed on one side between the rod-needle center clamp and the needle-side clamp. Metal bone needles are clamped in the needle clamping slots. The fixing section is provided with a fixing component that defines the rod-side clamp, the rod-needle center clamp, and the needle-side clamp. The first rod clamping slots and the needle clamping slots are staggered and perpendicular to each other.

[0010] Preferably, the fixing component includes a third threaded rod, one end of which is fixedly connected to one side of the bar-side clamp, and the other end of which is threaded with a first nut disc. The first nut disc contacts the side of the needle-side clamp away from the center clamp. Both the center clamp and the needle-side clamp have a first through hole on one side, and the third threaded rod passes through the cavity of the first through hole.

[0011] Preferably, the frame is provided with a stabilizing plate, which includes a first clamping plate and a second clamping plate arranged in mirror symmetry. Two parallel and through-type second rod clamping grooves are opened between the first clamping plate and the second clamping plate. A fourth threaded rod is fixedly connected to one side of the first clamping plate. The movable end of the fourth threaded rod is threaded with a second nut disc. The second nut disc contacts the side of the second clamping plate opposite to the first clamping plate. A through-type second perforation is opened on one side of the second clamping plate, and the fourth threaded rod passes through the cavity of the first perforation.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This application uses a frame consisting of two short rods, which allows for adjustment of the length of the external fixation brace for the elbow joint according to the length of the patient's arm. This effectively improves the applicability of the external fixation brace for the elbow joint and avoids the impact on the patient's life and rehabilitation due to the external fixation brace being too long, or the impact on fixation due to its being too short. Therefore, it effectively improves the applicability of the external fixation brace for the elbow joint.

[0014] 2. This application utilizes a sliding worm gear, which allows for adjustment of the fixation angle of the elbow joint external fixator and self-locking fixation using the worm wheel and worm gear. Simultaneously, the worm wheel and worm gear can be separated, thereby facilitating free movement of the patient's elbow joint. This facilitates postoperative exercise and rehabilitation, thus improving the practicality and ease of use of the elbow joint external fixator. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a novel external fixation bracket for the elbow joint according to this utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the rotating mechanism of a novel external fixation bracket for elbow joints according to this utility model.

[0017] Figure 3 This is a three-dimensional schematic diagram of the fixing section of a novel external fixation bracket for elbow joints according to this utility model.

[0018] Figure 4 This is a three-dimensional schematic diagram of the stabilizing plate of a novel external fixation bracket for the elbow joint according to this utility model.

[0019] The diagram is labeled as follows: 1. Frame; 2. Fixed section; 201. Bar side clamp; 202. Bar needle center clamp; 203. Needle side clamp; 204. Needle clamp groove; 3. First bar clamp groove; 4. Limiting component; 5. Rotating mechanism; 501. Turntable; 502. Mounting groove; 503. Worm gear; 504. Worm; 6. Slider; 7. First threaded rod; 8. Threaded sleeve; 9. Limiting rod; 10. Moving block; 11. Second threaded rod; 12. Metal bone needle; 13. Third threaded rod; 14. First nut disc; 15. First clamping plate; 16. Second clamping plate; 17. Fourth threaded rod; 18. Second nut disc; 19. Second bar clamp groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Figures 1-4 As shown, this utility model provides a technical solution for a novel external fixation brace for the elbow joint, including two frame bodies 1, a rotating mechanism 5 rotatably connecting the two frame bodies 1, fixed sections 2 arranged in a linear array on the frame body 1, the frame body 1 including two short rods arranged parallel to each other, two through-type first rod clamping grooves 3 opened on one side of the fixed section 2, the short rods are slidably connected to the first rod clamping grooves 3 on the fixed section 2, and a limiting component 4 is provided on the fixed section 2 to restrict the sliding of the short rods in the cavity of the first rod clamping grooves 3;

[0022] During the patient's surgery, metal bone pins 12 will be installed. Then, the length of the frame 1 will be adjusted according to the distance between the metal bone pins 12 on the forearm or the distance between the metal bone pins 12 on the upper arm. Then, the frame 1 and the metal bone pins 12 will be fixed to each other in a staggered and perpendicular manner using the fixing section 2. The connecting rod consists of two short rods.

[0023] When adjusting the length of frame 1, simply adjust the distance between the two short rods in frame 1 that are parallel and overlapping.

[0024] like Figure 2 As shown, the rotating mechanism 5 includes a turntable 501 that is staggered vertically. The bottom of the top turntable 501 is provided with a mounting groove 502. A worm gear 503 is rotatably connected to the inner wall of the mounting groove 502. The bottom of the worm gear 503 is fixedly connected to the upper part of the bottom turntable 501. A worm 504 is meshed with one side of the worm gear 503. An adjustment mechanism is provided on the inner wall of the mounting groove 502. The worm 504 is rotatably connected to the adjustment mechanism. The bottom short bar on the right frame 1 is fixedly connected to the side wall of the bottom turntable 501.

[0025] The angle between the two frames 1 is adjusted according to the optimal angle position to be maintained after surgery for the forearm and upper arm;

[0026] When adjusting the angle, rotate the worm gear 504. The worm gear 504 then uses the worm wheel 503 to drive the two turntables 501 to rotate relative to each other. Since the worm gear 504 and the worm wheel 503 have a self-locking effect, the stability of the angle adjustment of the two turntables 501 is improved, and the problem of self-rotation is avoided, thereby improving the stability of the angle adjustment of the frame 1.

[0027] like Figure 2 As shown, the adjustment mechanism includes a slider 6, a first threaded rod 7, and a threaded sleeve 8. A worm gear 504 is rotatably connected to one side of the slider 6. The slider 6 is slidably connected to the inner wall of the mounting groove 502. A through-hole is formed on the inner wall of the mounting groove 502. The threaded sleeve 8 is rotatably connected to the cavity of the first hole, and the threaded sleeve 8 is threaded onto the outside of the first threaded rod 7. One end of the first threaded rod 7 is fixedly connected to one side of the slider 6.

[0028] When patients need to perform simple movements of their upper and lower arms to facilitate rehabilitation treatment, they only need to rotate the threaded sleeve 8. The threaded sleeve 8 then uses the first threaded rod 7 to drive the slider 6 to slide in the mounting groove 502, thus disengaging the worm 504 from the meshing relationship with the worm wheel 503. At this time, the two turntables 501 can be rotated relative to each other at will, thereby freely adjusting the angle between the two frames 1.

[0029] When restricting the adjustment of the elbow joint external fixation bracket angle, the threaded sleeve 8 is rotated in the opposite direction, so that the slider 6 is brought closer to the worm wheel 503, and the worm 504 and the worm wheel 503 are meshed with each other. When the worm 504 and the worm wheel 503 are in contact and meshing, the angle of the frame 1 needs to be simply or slightly adjusted to facilitate the meshing and tooth groove connection between the worm 504 and the worm wheel 503.

[0030] like Figure 2 As shown, a limiting rod 9 is fixedly connected to one side of the turntable 501 at the top layer. A moving block 10 is slidably sleeved on the outer side of the limiting rod 9. A second threaded rod 11 is threadedly connected to a threaded hole at one end of the limiting rod 9. A long rod is fixedly connected to one end of the second threaded rod 11. The long rod is rotatably connected to a second rotating hole at one side of the moving block 10. The left frame 1 is fixedly connected to the left side of the moving block 10. The top short rod on the left frame 1 is fixedly connected to one side of the moving block 10.

[0031] By rotating the second threaded rod 11, the left frame 1 is moved away from or closer to the turntable 501, thereby facilitating the adjustment of the fixed position of the frame 1 according to the position of the metal bone pin 12 on the forearm, thus improving the applicability of the elbow joint external fixation bracket installation.

[0032] like Figure 3 As shown, the fixing section 2 includes a rod-side clamp 201, a rod-needle center clamp 202, and a needle-side clamp 203 arranged in sequence. Two first rod clamping grooves 3 are opened between the rod-side clamp 201 and the rod-needle center clamp 202. Two parallel and through needle clamping grooves 204 are opened on one side between the rod-needle center clamp 202 and the needle-side clamp 203. Metal bone needles 12 are clamped in the needle clamping grooves 204. The fixing section 2 is provided with a fixing component that limits the rod-side clamp 201, the rod-needle center clamp 202, and the needle-side clamp 203. The first rod clamping grooves 3 and the needle clamping grooves 204 are staggered and vertically arranged.

[0033] The short rod is installed in the cavity of the first rod clamping groove 3 between the rod side clamp 201 and the rod needle center clamp 202, thus using the rod side clamp 201 and the rod needle center clamp 202 to clamp and fix the short rod. The metal bone needle 12 is installed in the cavity of the needle clamping groove 204 between the rod needle center clamp 202 and the needle side clamp 203, thus using the rod needle center clamp 202 and the needle side clamp 203 to clamp and fix the metal bone needle 12. In this way, the metal bone needle 12 and the short rod are fixed together by the fixing section 2.

[0034] like Figure 3 As shown, the fixing assembly includes a third threaded rod 13. One end of the third threaded rod 13 is fixedly connected to one side of the bar-side clamp 201, and the other end of the third threaded rod 13 is threaded with a first nut disc 14. The first nut disc 14 contacts the side of the needle-side clamp 203 away from the bar needle center clamp 202. Both the bar needle center clamp 202 and the needle-side clamp 203 have a first through hole on one side, and the third threaded rod 13 passes through the cavity of the first through hole.

[0035] Both the needle center clamp 202 and the needle side clamp 203 are fitted onto the third threaded rod 13. Then, the first nut disc 14 is threaded onto the end of the third threaded rod 13. In this way, the first nut disc 14 and the needle side clamp 201 cooperate to clamp the needle center clamp 202 and the needle side clamp 203, thereby improving the stability of the installation of the three clamps.

[0036] like Figure 4 As shown, a stabilizing plate is provided on the frame 1. The stabilizing plate includes a first clamping plate 15 and a second clamping plate 16 arranged in mirror symmetry. Two parallel and through-type second rod clamping grooves 19 are opened between the first clamping plate 15 and the second clamping plate 16. A fourth threaded rod 17 is fixedly connected to one side of the first clamping plate 15. A second nut disc 18 is threadedly sleeved on the movable end of the fourth threaded rod 17. The second nut disc 18 contacts the side of the second clamping plate 16 away from the first clamping plate 15. A through-type second perforation is opened on one side of the second clamping plate 16. The fourth threaded rod 17 passes through the cavity of the first perforation.

[0037] The stabilizing plate is used to improve the stability of the two short rods installed on the frame 1. The two short rods on the frame 1 are placed between the first clamping plate 15 and the second clamping plate 16, and the two short rods are respectively located in the cavities of the two second rod clamping grooves 19. Then, the second nut plate 18 and the first clamping plate 15 are connected by the fourth threaded rod 17 and the second nut plate 18, so that the second nut plate 18 and the first clamping plate 15 cooperate to clamp the second clamping plate 16 and the two short rods.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel external fixation brace for the elbow joint, comprising two frames (1), wherein a rotating mechanism (5) is rotatably connected between the two frames (1), and the frames (1) are provided with linearly arrayed fixing segments (2), characterized in that: The frame (1) includes two short rods arranged parallel to each other. Two through-type first rod clamping grooves (3) are opened on one side of the fixed section (2). The short rods are slidably connected to the first rod clamping grooves (3) on the fixed section (2). A limiting component (4) is provided on the fixed section (2) to restrict the short rods from sliding in the cavity of the first rod clamping grooves (3).

2. The novel elbow joint external fixation brace according to claim 1, characterized in that: The rotating mechanism (5) includes a turntable (501) arranged vertically and vertically. The bottom of the top turntable (501) is provided with a mounting groove (502). A worm gear (503) is rotatably connected to the inner wall of the mounting groove (502). The bottom of the worm gear (503) is fixedly connected to the upper part of the bottom turntable (501). A worm (504) is meshed with one side of the worm gear (503). An adjustment mechanism is provided on the inner wall of the mounting groove (502). The worm (504) is rotatably connected to the adjustment mechanism.

3. The novel elbow joint external fixation brace according to claim 2, characterized in that: The adjustment mechanism includes a slider (6), a first threaded rod (7), and a threaded sleeve (8). The worm gear (504) is rotatably connected to one side of the slider (6). The slider (6) is slidably connected to the inner wall of the mounting groove (502). A through-hole is formed on the inner wall of the mounting groove (502). The threaded sleeve (8) is rotatably connected to the cavity of the first hole, and the threaded sleeve (8) is threaded onto the outside of the first threaded rod (7). One end of the first threaded rod (7) is fixedly connected to one side of the slider (6).

4. The novel elbow joint external fixator according to claim 3, characterized in that: A limiting rod (9) is fixedly connected to one side of the turntable (501) at the top layer. A moving block (10) is slidably sleeved on the outer side of the limiting rod (9). A second threaded rod (11) is threadedly connected to a threaded hole at one end of the limiting rod (9). A long rod is fixedly connected to one end of the second threaded rod (11). The long rod is rotatably connected to a second rotating hole at one side of the moving block (10). The frame (1) on the left side is fixedly connected to the left side of the moving block (10).

5. A novel external fixator for the elbow joint according to claim 4, characterized in that: The fixing section (2) includes a rod-side clamp (201), a rod-needle center clamp (202), and a needle-side clamp (203) arranged in sequence. Two first rod clamping grooves (3) are opened between the rod-side clamp (201) and the rod-needle center clamp (202). Two parallel and through needle clamping grooves (204) are opened on one side between the rod-needle center clamp (202) and the needle-side clamp (203). Metal bone needles (12) are clamped in the needle clamping grooves (204). The fixing section (2) is provided with a fixing component that limits the rod-side clamp (201), the rod-needle center clamp (202), and the needle-side clamp (203).

6. The novel elbow joint external fixator according to claim 1, characterized in that: The fixing assembly includes a third threaded rod (13), one end of which is fixedly connected to one side of the bar-side clamp (201), and the other end of which is threaded with a first nut disc (14). The first nut disc (14) contacts the side of the needle-side clamp (203) away from the needle center clamp (202). Both the needle center clamp (202) and the needle-side clamp (203) have a first through hole on one side, and the third threaded rod (13) passes through the cavity of the first through hole.

7. The novel elbow joint external fixator according to claim 1, characterized in that: The frame (1) is provided with a stabilizing plate, which includes a first clamping plate (15) and a second clamping plate (16) arranged in mirror symmetry. Two parallel and through-type second rod clamping grooves (19) are opened between the first clamping plate (15) and the second clamping plate (16). A fourth threaded rod (17) is fixedly connected to one side of the first clamping plate (15). The movable end of the fourth threaded rod (17) is threaded with a second nut disc (18). The second nut disc (18) is in contact with the side of the second clamping plate (16) away from the first clamping plate (15). A through-type second perforation is opened on one side of the second clamping plate (16). The fourth threaded rod (17) passes through the cavity of the first perforation.

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