Sternum fracture reduction fixator

Abstract

The utility model discloses a sternum fracture reduction fixator which comprises a rack, a first reduction plate and a second reduction plate, the first reduction plate and the second reduction plate are used for conducting reduction on a fractured sternum, the first reduction plate is installed at one end of the rack, the second reduction plate is arranged on the rack in a sliding mode, and the second reduction plate and the first reduction plate are symmetrically arranged. The second reset plate is connected with a sliding support arranged on the rack in a sliding mode. The sliding support is provided with a driving assembly for driving the second reset plate to move in the direction of the rack and a locking assembly for locking the second reset plate. The sternum fracture reduction device is simple in structure and convenient to operate, the two reduction plates installed on the fractured sternum are matched, reduction of the fractured sternum is rapidly completed under driving of the driving assembly, and the successful reduction efficiency of the sternum fracture surgery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a sternum fracture reduction and fixation device. Background Art

[0002] Sternum fractures are very rare and are often caused by direct violence or compression of the sternum. Fractures often occur near the sternum where the sternum and the manubrium connect. The fracture line is mostly horizontal. If there is displacement, the lower fold moves forward, and its upper end overlaps the lower end of the upper sternum. The periosteum behind the sternum often remains intact. Clinical manifestations include swelling and pain in the sternum, which may be accompanied by respiratory and circulatory dysfunction.

[0003] If the sternal fracture is obviously displaced, surgical treatment is required. Generally, an incision is made after anesthesia to expose the sternum, and the fracture is reduced under direct vision using a periosteal elevator or a prying pry. After satisfactory reduction, holes are drilled in the upper and lower fracture segments, and the fracture is fixed with wires or sutures. This manual reduction method is more complicated, requires high stability in manual operation, and requires precise control of force, which affects the efficiency of the operation. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a sternum fracture reduction and fixation device, which can solve the problem of complex operation and difficult reduction of the sternum in manual reduction of the sternum during clinical surgery, and improve the efficiency of successful reduction of the sternum fracture surgery.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0006] A sternum fracture reduction and fixation device comprises a rack, a first reduction plate and a second reduction plate for reducing the fractured sternum, wherein the first reduction plate is mounted on one end of the rack, the second reduction plate is slidably disposed on the rack, and the second reduction plate is symmetrically disposed with the first reduction plate, the second reduction plate is connected to a sliding bracket slidably disposed on the rack, and a driving component for driving the second reduction plate to move along the rack direction and a locking component for locking the second reduction plate are mounted on the sliding bracket.

[0007] In the above-mentioned sternum fracture reduction and fixation device, the sliding bracket is arranged in a C shape, and the sliding bracket is connected to the second reduction plate through a connecting block slidably arranged on the rack.

[0008] In the above-mentioned sternum fracture reduction and fixation device, the first reduction plate and the second reduction plate are arranged in an L shape, wherein the vertical parts of the first reduction plate and the second reduction plate are installed on the rack, and a plurality of threaded holes are provided on the horizontal parts of the first reduction plate and the second reduction plate, and the horizontal parts of the first reduction plate and the second reduction plate are installed on the sternum through a bolt assembly.

[0009] The above-mentioned sternum fracture reduction and fixation device, the driving component includes a gear shaft installed between the two side plates on the sliding bracket through a bearing seat, and a gear meshing with the rack is installed on the gear shaft; a rotating handle is installed at one end of the gear shaft.

[0010] The above-mentioned sternum fracture reduction and fixation device, the locking assembly includes a rotating shaft installed on the sliding bracket, a locker is installed on the rotating shaft, a torsion spring is installed between the locker and the rotating shaft, and a curved hook is provided on one side of the locker to lock with the tooth gap on the rack.

[0011] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0012] The utility model provides a sternum fracture reduction and fixation device with a simple structure and easy operation. The broken sternum is quickly reduced by the cooperation of two reduction plates installed on the broken sternum and driven by a driving component, thereby improving the efficiency of successful reduction of sternum fracture surgery and saving time and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the specific structure of the utility model.

[0014] Wherein: 1. rack, 2. first reset plate, 3. second reset plate, 4. sliding bracket, 5. gear, 6. gear shaft, 7. rotating handle, 8. lock, 9. rotating shaft, 10. hook, 11. threaded hole, 12. connecting block. DETAILED DESCRIPTION

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0016] Sternum fracture reduction fixator, such as Figure 1 As shown, it includes a rack 1, a first reset plate 2 is installed at one end of the rack 1, a second reset plate 3 symmetrically arranged with the first reset plate 2 is slidably arranged on the rack 1, the second reset plate 3 is connected to a sliding bracket 4 slidably arranged on the rack 1, and a driving component for driving the second reset plate 3 to move along the rack direction and a locking component for locking the second reset plate 3 are installed on the sliding bracket 4.

[0017] The sliding bracket 4 is arranged in a C shape. The sliding bracket 4 is connected to the second reset plate 3 via a connecting block 12 . The connecting block 12 is also slidably arranged on the rack 1 .

[0018] The first reset plate 2 and the second reset plate 3 are arranged in an L shape, wherein the vertical parts of the first reset plate 2 and the second reset plate 3 are installed on the rack 1, and a plurality of threaded holes 11 are provided on the horizontal parts of the first reset plate 2 and the second reset plate 3, and the horizontal parts of the first reset plate 2 and the second reset plate 3 are installed on the sternum through bolt assemblies.

[0019] The driving assembly includes a gear shaft 6 installed between the two side plates on the sliding bracket 4 through a bearing seat, and a gear 5 meshing with the rack 1 is installed on the gear shaft 6. A rotating handle 7 is installed at one end of the gear shaft 6, which can drive the gear 5 to rotate, thereby completing the movement of the second reset plate 3.

[0020] The locking assembly includes a rotating shaft 9 installed on the sliding bracket 4, and a locker 8 is installed on the rotating shaft 9. A hook 10 is provided on one side of the locker 8 to lock the tooth gap on the rack 1. When the hook 10 contacts the tooth gap on the rack 1, the rack 1 and the locker 8 are locked to prevent the second reset plate 3 from continuing to move when the gear 5 rotates.

[0021] A torsion spring is installed between the lock 8 and the rotating shaft 9. When the lock 8 needs to be released, the other side of the lock 8 is pressed inward. Under the action of the torsion spring, the lock 8 rotates around the rotating shaft to make the hook 10 leave the tooth gap on the rack 1.

[0022] When in use, the first resetting plate 2 and the second resetting plate 3 are respectively installed on the two sternums in a direction perpendicular to the sternal fracture.

[0023] Next, the side of the locker 8 close to the gear 5 is pressed inward, the locker 8 rotates around the rotating shaft 9, and the hook 10 moves away from the tooth gap on the rack 1, and the locking of the rack 1 stops.

[0024] Then, the gear 5 is rotated by rotating the rotary handle 7 , thereby driving the second reset plate 3 to move toward the first reset plate 2 along the direction of the rack 1 .

[0025] When the second reset plate 3 contacts the first reset plate 2, the lock 8 is released, and the lock 8 is automatically reset under the action of the torsion spring, so that the hook 10 at the end of the lock 8 contacts the tooth gap on the rack 1, preventing the second reset plate 3 from moving further.

[0026] Finally, multiple sets of steel plates are respectively installed on the broken sternums on both sides for fixation. After fixation is completed, the bolt assemblies on the first reset plate 2 and the second reset plate 3 are screwed to remove the first reset plate 2 and the second reset plate 3 from the sternum.

[0027] The utility model provides a sternum fracture reduction and fixation device with a simple structure and easy operation. The broken sternum is quickly reduced by the cooperation of two reduction plates installed on the broken sternum and driven by a driving component, thereby improving the efficiency of successful reduction of sternum fracture surgery and saving time and cost.

Claims

1. A sternal fracture reduction and fixation device, characterized in that: The invention comprises a rack (1), a first reset plate (2) and a second reset plate (3) for resetting a broken sternum, wherein the first reset plate (2) is mounted on one end of the rack (1), the second reset plate (3) is slidably arranged on the rack (1), and the second reset plate (3) is symmetrically arranged with the first reset plate (2), the second reset plate (3) is connected to a sliding bracket (4) slidably arranged on the rack (1), and a driving component for driving the second reset plate (3) to move along the rack direction and a locking component for locking the second reset plate (3) are mounted on the sliding bracket (4).

2. The sternal fracture reduction and fixation device according to claim 1, characterized in that: The sliding bracket (4) is arranged in a C shape, and the sliding bracket (4) is connected to the second reset plate (3) via a connecting block (12) slidably arranged on the rack (1).

3. The sternal fracture reduction and fixation device according to claim 1, characterized in that: The first reset plate (2) and the second reset plate (3) are arranged in an L shape, wherein the vertical parts of the first reset plate (2) and the second reset plate (3) are mounted on the rack (1), a plurality of threaded holes (11) are provided on the horizontal parts of the first reset plate (2) and the second reset plate (3), and the horizontal parts of the first reset plate (2) and the second reset plate (3) are mounted on the sternum via a bolt assembly.

4. The sternal fracture reduction and fixation device according to claim 1, characterized in that: The driving assembly comprises a gear shaft (6) mounted between two side plates on a sliding bracket (4) via a bearing seat, a gear (5) meshing with a rack (1) being mounted on the gear shaft (6); a rotating handle (7) is mounted at one end of the gear shaft (6).

5. The sternal fracture reduction and fixation device according to claim 1, characterized in that: The locking assembly comprises a rotating shaft (9) mounted on a sliding bracket (4), a locker (8) mounted on the rotating shaft (9), a torsion spring mounted between the locker (8) and the rotating shaft (9), and a curved hook (10) for locking with a tooth gap on a rack (1) is arranged on one side of the locker (8).

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