An emergency fixation device for limb bone injuries

Abstract

The present invention relates to the technical field of limb bone injury, and in particular to an emergency fixation device for limb bone injury, comprising a connecting plate, two movable plates connected to a fixed frame through a sliding mechanism; hinged rods are fixedly hinged on the two movable plates, the two hinged rods are hinged with movable plates, the movable plates are rotatably connected with threaded rods through bearings, and the threaded rods are threadedly connected to the fixed frame; first springs are fixedly connected to the relative inner sides of the two movable plates, clamping parts are fixedly connected to the relative inner sides of the two groups of first springs, first racks are fixedly connected to the two clamping parts, gears are meshed on the two first racks, the two gears are rotatably connected to the movable plate through bearings, second racks are meshed on the two gears, and the two second racks are limited by a limiting mechanism. The present invention has the function of ensuring that the force size is constant each time the clamping is fixed, so as to control the force size during clamping and fixation, and prevent the clamping force from being too large or too small.

Description

Technical Field

[0001] The invention relates to the technical field of limb bone injuries, and in particular to an emergency fixation device for limb bone injuries. Background Art

[0002] When performing surgery on a patient's bone injury, it is often necessary to fix the patient's limbs to prevent the limbs from moving during the operation, so as to facilitate the operation. When performing emergency fixation, clamping fixation is generally used to fix the patient's limbs. However, when performing clamping fixation, due to the different thicknesses of the patient's arms, it is difficult to control the force of the clamping fixation when adjusting the fixation, which can easily lead to excessive clamping force, resulting in blood circulation problems and local tissue necrosis, or too small clamping force, affecting the fixation effect during surgery. In order to provide an emergency fixation device for limb bone injuries. Summary of the invention

[0003] The purpose of the present invention is to solve the disadvantage in the prior art that it is difficult to control the force during clamping and fixing, and to propose an emergency fixation device for limb bone injuries.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An emergency fixation device for limb bone injuries is designed, comprising a connecting plate, both ends of which are fixedly connected to fixing frames, and two first movable plates are connected to the two fixing frames through a sliding mechanism;

[0006] The two first movable plates are both fixedly hinged with hinged rods, the two hinged rods are hinged with second movable plates, the second movable plates are rotatably connected with threaded rods through bearings, and the threaded rods are threadedly connected with the fixed frame;

[0007] The first springs are fixedly connected to the relative inner sides of the two first movable plates, the clamping parts are fixedly connected to the relative inner sides of the two groups of the first springs, the first racks are fixedly connected to the two clamping parts, the two first racks are meshed with gears, the two gears are rotatably connected to the first movable plates through bearings, the two gears are meshed with second racks, and the two second racks are limited by a limiting mechanism;

[0008] The inner sides of the two second racks are in contact with the second moving plate through an abutment mechanism.

[0009] Preferably, the sliding mechanism comprises a T-shaped slide groove, the T-shaped slide groove is arranged on the fixed frame, the two first movable plates are fixedly connected with a T-shaped slider, and the two T-shaped sliders are slidably arranged in the T-shaped slide groove.

[0010] Preferably, the limiting mechanism comprises a sliding rod, the sliding rod is fixedly connected to the first movable plate, a sliding sleeve is sleeved on the sliding rod, and the sliding sleeve is fixedly connected to the second rack.

[0011] Preferably, a positioning rod is fixedly connected to the clamping portion, and the positioning rod passes through the first movable plate.

[0012] Preferably, the abutment mechanism includes a connecting sleeve, the connecting sleeve is fixedly connected to the second rack, the connecting sleeve is sleeved with a vertical edge, the vertical edge is fixedly connected to a sleeve, a connecting rod can be inserted in the sleeve, the connecting rod is fixedly connected to the second movable plate, the vertical edge is fixedly connected to a push rod, a slide groove is provided on the second movable plate, both ends of the slide groove are slidably provided with sliders, the two sliders are rotatably connected to hinge plates through pins, the two hinge plates are hinged to the moving rod, the moving rod and the second moving plate are fixedly connected with a second spring, both ends of the slide groove are connected to a through hole, the push rod can be inserted into the through hole, the moving rod passes through the fixed frame, the moving rod is rotatably connected to a rotating part through a bearing, and the rotating part is connected to the threaded rod through a coaxial connection mechanism.

[0013] Preferably, the coaxial connection mechanism comprises a rectangular block, a rectangular sleeve is sleeved on the rectangular block, and the rectangular sleeve is fixedly connected to the rotating part.

[0014] Preferably, a buffer layer is provided on the opposite inner sides of the two clamping parts.

[0015] The emergency fixation device for limb bone injuries proposed by the present invention has the beneficial effects that: under the action of the abutment mechanism, it abuts against the moving plate to limit and fix the moving plate, thereby increasing the resistance of the moving plate when it moves. When the first spring is compressed to a certain extent, the threaded rod becomes unable to rotate. Since the compression amount of the first spring is constant, the force exerted by the first spring on the clamping part is constant, which ensures that the force size is constant each time the clamping is fixed, so as to control the size of the force during clamping and fixation, and prevent the clamping force from being too large or too small. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an emergency fixation device for limb bone injuries proposed by the present invention;

[0017] Figure 2 A three-dimensional cross-sectional view of an emergency fixation device for limb bone injuries proposed by the present invention Figure 1 ;

[0018] Figure 3 A three-dimensional cross-sectional view of an emergency fixation device for limb bone injuries proposed by the present invention Figure 2 ;

[0019] Figure 4 The present invention provides an emergency fixation device for limb bone injuries. Figure 3 A front view of

[0020] Figure 5 A three-dimensional cross-sectional view of an emergency fixation device for limb bone injuries proposed by the present invention Figure 3 ;

[0021] Figure 6 A three-dimensional cross-sectional view of an emergency fixation device for limb bone injuries proposed by the present invention Figure 4 ;

[0022] Figure 7 A three-dimensional cross-sectional view of an emergency fixation device for limb bone injuries proposed by the present invention Figure 5 ;

[0023] Figure 8 A three-dimensional diagram of a hinged plate portion of an emergency fixation device for limb bone injuries proposed by the present invention;

[0024] Fig. 9 An emergency fixation device for limb bone injuries proposed by the present invention Figure 7 Enlarged view of part A.

[0025] In the figure: 1, fixed frame; 2, rotating part; 3, threaded rod; 4, first movable plate; 5, clamping part; 6, connecting rod; 7, T-shaped slide groove; 8, T-shaped slider; 9, hinged rod; 10, second movable plate; 11, positioning rod; 12, first spring; 13, first rack; 14, gear; 15, second rack; 16, vertical edge; 17, connecting sleeve; 18, movable rod; 19, rectangular sleeve; 20, rectangular block; 21, sliding rod; 22, sliding sleeve; 23, push rod; 24, through hole; 25, hinged plate; 26, second spring; 27, slide groove; 28, slider; 29, sleeve; 30, connecting plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example 1: Reference Figure 1-7 An emergency fixation device for limb bone injuries includes a connecting plate 30, both ends of which are fixedly connected to a fixing frame 1. Two fixing frames 1 are used to clamp and fix the limb at two positions, which is beneficial to the clamping and fixing effect.

[0028] A fixing hole can be opened on the fixing frame 1, and the fixing hole is installed on the operating table by bolts. Two first movable plates 4 are connected to the two fixing frames 1 through a sliding mechanism. The sliding mechanism includes a T-shaped slide groove 7. The T-shaped slide groove 7 is opened on the fixing frame 1. The two first movable plates 4 are fixedly connected with a T-shaped slider 8. The two T-shaped sliders 8 can be slidably set in the T-shaped slide groove 7. When the first movable plate 4 moves, the position of the T-shaped slider 8 in the T-shaped slide groove 7 is adjusted to adjust the distance between the two first movable plates 4 so as to clamp and fix limbs of different thicknesses. At the same time, the T-shaped slider 8 plays a connecting role between the first movable plate 4 and the fixing frame 1 in the T-shaped slide groove 7.

[0029] The two first movable plates 4 are fixedly hinged with hinged rods 9, and the second movable plates 10 are hinged on the two hinged rods 9. The second movable plates 10 are rotatably connected with threaded rods 3 through bearings. The threaded rods 3 are threadedly connected to the fixed frame 1. By rotating the threaded rods 3, the second movable plates 10 will be driven to move, and the inclination angle of the hinged rods 9 will be adjusted, thereby driving the two first movable plates 4 to move and adjusting the distance between the two first movable plates 4.

[0030] The relative inner sides of the two first movable plates 4 are fixedly connected with the first springs 12, and the relative inner sides of the two groups of first springs 12 are fixedly connected with the clamping parts 5. The clamping parts 5 are arc-shaped structures, and the relative inner sides of the two clamping parts 5 are provided with buffer layers. The buffer layers are made of rubber material or other soft materials so as to play a buffering role when contacting the limbs. A positioning rod 11 is fixedly connected to the clamping parts 5, and the positioning rod 11 passes through the first movable plate 4. The positioning rod 11 is used to support and limit the clamping parts 5.

[0031] The two clamping parts 5 are fixedly connected with the first racks 13, and the two first racks 13 are meshed with gears 14. The two gears 14 are rotatably connected to the first movable plate 4 through bearings. The two gears 14 are meshed with second racks 15. The two second racks 15 are limited by a limiting mechanism. The limiting mechanism includes a sliding rod 21, which is fixedly connected to the first movable plate 4. A sliding sleeve 22 is sleeved on the sliding rod 21, and the sliding sleeve 22 is fixedly connected to the second rack 15. The sliding rod 21 and the sliding sleeve 22 ensure the stability of the second rack 15 when it moves.

[0032] When fixing, first move through the first movable plate 4, when the clamping part 5 contacts with the limb, the first movable plate 4 continues to move, the first spring 12 will be compressed, so that the distance between the clamping part 5 and the first movable plate 4 is reduced, and the clamping part 5 has a relative outward movement relative to the movable plate 4, so that the first rack 13 drives the gear 14 to rotate, and the gear 14 drives the second rack 15 to move, and the inner sides of the two second racks 15 abut against the second movable plate 10 through the abutment mechanism. Under the action of the abutment mechanism, they abut against the second movable plate 10, and the second movable plate 10 is limited and fixed, thereby increasing the resistance of the second movable plate 10 when moving. When the first spring 12 is compressed to a certain extent, the threaded rod 3 cannot rotate. Since the compression amount of the first spring 12 is constant, the force exerted by the first spring 12 on the clamping part 5 is constant, which ensures that the force size is constant each time the clamping is fixed, so as to control the size of the force during clamping and fixation to prevent the clamping force from being too large or too small.

[0033] Embodiment 2: In embodiment 1, although the second movable plate 10 is limited and fixed by the force during abutment, which increases the resistance when the threaded rod 3 is rotated, the second movable plate 10 is limited by the friction force during abutment. Since the friction force is related to the friction coefficient, long-term friction will lead to the smoothness of the contact surface, which is easy to lead to the reduction of friction resistance, so that when the first spring 12 has been compressed to the specified size, the threaded rod 3 can still be rotated, resulting in excessive clamping force, and the clamping force cannot be stably controlled when the limb is fixed. Figure 1-9 , as another preferred embodiment of the present invention, based on Example 1.

[0034] The abutment mechanism includes a connecting sleeve 17, which is fixedly connected to the second rack 15. A vertical edge 16 is sleeved in the upper connecting sleeve 17. When the second rack 15 drives the connecting sleeve 17 to move, it drives the vertical edge 16 to move so that the push rod 23 is inserted into the through hole 24. At the same time, when the vertical edge 16 moves, it will slide in the connecting sleeve 17. A sleeve 29 is fixedly connected to the vertical edge 16. A connecting rod 6 can be inserted in the sleeve 29. The connecting rod 6 is fixedly connected to the second movable plate 10. The sleeve 29 and the connecting rod 6 enable the vertical edge 16 to move synchronously with the second movable plate 10, so that the push rod 23 can align the through hole 24.

[0035] A push rod 23 is fixedly connected to the vertical edge 16, a slide groove 27 is provided on the second movable plate 10, and sliders 28 are slidably provided at both ends of the slide groove 27. The two sliders 28 are rotatably connected to the hinged plate 25 through a pin shaft. The two hinged plates 25 are hinged to the movable rod 18. A second spring 26 is fixedly connected between the movable rod 18 and the second movable plate 10. Both ends of the slide groove 27 are connected with through holes 24. The through holes 24 are provided on the second movable plate 10. The push rod 23 can be inserted into the through holes 24. The movable rod 18 passes through the fixed frame 1. The movable rod 18 is rotatably connected to the rotating part 2 through a bearing. The rotating part 2 is connected to the threaded rod 3 through a coaxial connection mechanism. When moving, the vertical edge 16 will be driven to move, so that the vertical edge 16 drives the push rod 23 to move. The push rod 23 is inserted into the through hole 24, and the slider 28 will be pushed to slide in the slide groove 27, so that the inclination angle of the hinge plate 25 is changed, so that the hinge plate 25 pushes the moving rod 18 to move upward, and the moving rod 18 will drive the rectangular sleeve 19 to move upward, so that the rectangular sleeve 19 is separated from the rectangular block 20, so that when the rotating part 2 rotates, it cannot drive the rectangular block 20 to rotate, and thus cannot drive the threaded rod 3 to rotate, ensuring that the compression amount of the first spring 12 is constant, and the compression amount of the first spring 12 is stably controlled, so that the clamping force is stably controlled each time the limb is fixed.

[0036] The coaxial connection mechanism includes a rectangular block 20, on which a rectangular sleeve 19 is sleeved. The rectangular sleeve 19 is fixedly connected to the rotating part 2. When the rectangular sleeve 19 and the rectangular block 20 are connected, they play a coaxial rotation role, and no transmission is performed when separated.

[0037] When in use: by placing the limb between the two clamping parts 5 and rotating the threaded rod 3, the second movable plate 10 will be driven to move, and the inclination angle of the hinge rod 9 will be adjusted, thereby driving the two first movable plates 4 to move and adjusting the distance between the two first movable plates 4. When the clamping part 5 contacts the limb and the first movable plate 4 continues to move, the first spring 12 will be compressed, so that the distance between the clamping part 5 and the first movable plate 4 will be reduced, and the clamping part 5 will move outward relative to the movable plate 4, so that the first rack 13 drives the gear 14 to rotate, and the gear 14 drives the second rack 15 to move inward, and the second rack 15 drives the connecting sleeve 17 to move, driving the vertical edge 1 6 is moved, so that the push rod 23 is inserted into the through hole 24, and the slider 28 is pushed to slide in the slide groove 27, so that the inclination angle of the hinge plate 25 is changed, so that the hinge plate 25 pushes the moving rod 18 to move upward, and the moving rod 18 will drive the rectangular sleeve 19 to move upward, so that the rectangular sleeve 19 is separated from the rectangular block 20, so that the rotating part 2 cannot drive the threaded rod 3 to rotate when rotating, ensuring that the compression amount of the first spring 12 is constant, and the compression amount of the first spring 12 is stably controlled, so as to stably control the clamping force when the limb is fixed each time; when releasing, the rotating part 2 is pressed downward, so that the rectangular sleeve 19 is re-set on the rectangular block 20, and the rotating part 2 is rotated in the opposite direction to release.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An emergency fixation device for limb bone injuries, comprising a connecting plate (30), characterized in that: Both ends of the connecting plate (30) are fixedly connected to a fixing frame (1), and two first movable plates (4) are connected to the two fixing frames (1) via a sliding mechanism; The two first movable plates (4) are both fixedly hinged with hinged rods (9), the two hinged rods (9) are hinged with second movable plates (10), the second movable plates (10) are rotatably connected with threaded rods (3) via bearings, and the threaded rods (3) are threadedly connected to the fixed frame (1); The relative inner sides of the two first movable plates (4) are fixedly connected with first springs (12), the relative inner sides of the two groups of the first springs (12) are fixedly connected with clamping parts (5), the two clamping parts (5) are fixedly connected with first racks (13), the two first racks (13) are meshed with gears (14), the two gears (14) are rotatably connected to the first movable plates (4) via bearings, the two gears (14) are meshed with second racks (15), and the two second racks (15) are limited by a limiting mechanism; The inner sides of the two second racks (15) are in contact with the second movable plate (10) via an abutment mechanism; the abutment mechanism comprises a connecting sleeve (17), the connecting sleeve (17) being fixedly connected to the second rack (15), a vertical edge (16) being sleeved in the connecting sleeve (17), a sleeve (29) being fixedly connected to the vertical edge (16), a connecting rod (6) being insertable in the sleeve (29), the connecting rod (6) being fixedly connected to the second movable plate (10), a top rod (23) being fixedly connected to the vertical edge (16), a slide groove (27) being provided on the second movable plate (10), both ends of the slide groove (27) being A slider (28) is slidably provided, and the two sliders (28) are rotatably connected to a hinge plate (25) via a pin shaft. The two hinge plates (25) are hinged to a moving rod (18). A second spring (26) is fixedly connected between the moving rod (18) and the second moving plate (10). Both ends of the slide groove (27) are connected to each other with a through hole (24), and the push rod (23) can be inserted into the through hole (24). The moving rod (18) passes through the fixed frame (1). A rotating part (2) is rotatably connected to the moving rod (18) via a bearing, and the rotating part (2) is connected to the threaded rod (3) via a coaxial connection mechanism.

2. The emergency fixation device for limb bone injuries according to claim 1, characterized in that: The sliding mechanism comprises a T-shaped sliding groove (7), wherein the T-shaped sliding groove (7) is provided on the fixed frame (1), and the two first movable plates (4) are both fixedly connected with a T-shaped sliding block (8), and the two T-shaped sliding blocks (8) are slidably arranged in the T-shaped sliding groove (7).

3. The emergency fixation device for limb bone injuries according to claim 1, characterized in that: The limiting mechanism comprises a sliding rod (21), the sliding rod (21) being fixedly connected to the first movable plate (4), a sliding sleeve (22) being sleeved on the sliding rod (21), and the sliding sleeve (22) being fixedly connected to the second rack (15).

4. The emergency fixation device for limb bone injuries according to claim 1, characterized in that: A positioning rod (11) is fixedly connected to the clamping portion (5), and the positioning rod (11) passes through the first movable plate (4).

5. The emergency fixation device for limb bone injuries according to claim 1, characterized in that: The coaxial connection mechanism comprises a rectangular block (20), a rectangular sleeve (19) is sleeved on the rectangular block (20), and the rectangular sleeve (19) is fixedly connected to the rotating part (2).

6. The emergency fixation device for limb bone injuries according to claim 5, characterized in that: Buffer layers are provided on the opposite inner sides of the two clamping parts (5).

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