Scaphoid fracture fixer

Abstract

The invention discloses a scaphoid fracture fixer. The scaphoid fracture fixer comprises a bow back and pins, wherein the bow back and the pins form an integrated structure and are connected through a fixing arc. The scaphoid fracture fixer is made from nickel titanium memory alloy. The special structural form of the scaphoid fracture fixer is designed by the structural requirements in the fracture fixation engineering science according to the characteristic that the nickel titanium memory alloy can cause memory deformation in a temperature range of 0-40 DEG C. The scaphoid fracture fixer is in ice salt water being 0-5 DEG C. The two pins of the scaphoid fracture fixer are unfolded and directly embedded into the two broken ends of the scaphoid fracture part, hot salt water at 40 DEG C is wetly compressed on the scaphoid fracture fixer, a dynamic pressure is generated by the Magus effect of a nickel titanium memory alloy plate, the pressure is naturally and softly applied, and the scaphoid fracture fixer is fused with bones and is stable and reliable. Due to the design of the fixing arc and the special angle of the fixing arc is beneficial to bone grafting, compressed reduction and fixation, and a fusion device is directly embedded in the subcutaneous part without being externally fixed, so that the scaphoid fracture fixer is simple and convenient to operate, avoids infection and is beneficial to postoperative early mobilization and wrist joint function recovery of a patient.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and further belongs to the technical field of orthopedic devices, in particular to a fixer for fusion and fixation of fractures, especially suitable for reduction of scaphoid fractures. Background technique [0002] Fracture is a situation that often occurs when the human body is injured, and fracture reduction and fixation are the most commonly used medical means. The wrist is the most flexible functional part of human beings. The wrist bone is composed of many bones with different structures, which can be described as complex in structure. Once injured, its reduction and fixation are much more difficult than the reduction of fractures in other parts. The reduction in the prior art generally uses Kirschner wires, fixed steel plates, etc. to reset and fix the fractured carpal bones. Since these devices have no pressurizing effect on the intercarpal joints, a long period of external fixat...

AI Technical Summary

Problems solved by technology

The reduction in the prior art generally uses Kirschner wires, fixed steel plates, etc. to reset and fix the fractured carpal bones. Since these devices have no pressurizing effect on the intercarpal joints, a long period of external fixation is required after the operation, which will cause serious damage to the patient's functional recovery. A certain impact, that is able to recover slowly

Moreover, plate and screw fixation requires drilling holes in the smaller carpal bones, which is complicated to operate, increases surgical trauma, and affects joint function

Especially for the fixation of the scaphoid, postoperative complications such as pain and infection may occur, which is extremely unfavorable to the recovery of the wrist joint

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