External fixer for radius distal fracture

Abstract

The invention relates to an external fixator for treating fractures of the distal end of the radius. The present invention adopts spherical pads arranged on the ball head structures connected by long and short fixed rods, eccentric pins are arranged on the long and short fixed rods to form a ball head structure locking structure, and long and short screw rods are arranged in the hollow parts of the long and short fixed rods , the slide block on it contacts and connects with the fixing blocks on the long and short fixing rods, and threaded needle fixing grooves are arranged on the side of the fixing block in contact with the long and short fixing rods, so as to realize the effect of treating fractures of the distal end of the radius. It solves the problem of poor mechanical properties of similar external fixation brackets in the past, and the threaded needle cannot be adjusted, so the wrist joint and forearm cannot gradually make the wrist joint and forearm have a certain range of motion and can be exercised and restored. The invention has the advantages of simple structure, good effect, low cost and light weight.

Description

technical field [0001] The invention relates to an external fixation device for fractures, in particular to an external fixator for treating fractures at the distal end of the radius. Background technique [0002] Distal radius fracture is a common and frequently-occurring disease in clinic. The first clinical treatment method is non-surgical treatment, that is, manual reduction, splint or plaster external fixation, but this method is prone to fracture displacement, and the proportion is relatively high; the other is surgical treatment, using open reduction and internal fixation with plates , take out the plate in a second operation, and if the fracture end is comminuted or osteoporosis, the distal end cannot be fixed with screws, and the radius will be shortened in the later stage, and plaster external fixation is often used for fear of fracture displacement after operation. [0003] The use of plaster external fixation prevents early functional exercise of the wrist joint...

AI Technical Summary

Problems solved by technology

[0006] 1. The range of wrist joint functional exercise cannot be gradually increased as the patient's distal radius fracture heals;

[0007] 2. The 360-degree rotation of the bone clamping needle around the frame body is redundant (because the frame itself can be rotated), and the rotation of the bone clamping needle makes the bracket not as close to the human body as possible, which weakens the mechanical properties of the external fixation bracket;

[0008] 3. The extender of the external fixation bracket is a coarse adjustment structure, which is not accurate enough;

[0009] 4. There are high requirements for the position of the threaded needle, and it cannot be adjusted if there is a deviation, and there is no choice for the distance of the threaded needle;

[0010] 5. Relatively speaking, the external fixation bracket has many components and heavy structure

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