Intra-osseous self-restoring high-efficiency bone fracture resetting and fixing device

Abstract

The invention discloses an intraosseous self-reforming high-efficiency fracture reduction and fixation device, which comprises a body and an expansion fork. The expansion forks are respectively arranged on both sides of the body and are made of memory alloy materials. The invention is made of nickel-titanium memory alloy material, and is designed according to the characteristics of memory deformation of the material in the range of 0°C to 40°C, and in combination with ergonomics. When in use, the present invention closes the two expansion forks in ice salt water at 0°C to 5°C, drills the hole and puts it into the scaphoid from the fracture tubercle, wets it with hot salt water at 40°C on the fixation device, and uses The Martens effect of nickel-titanium memory alloy plate produces dynamic pressure, which is natural and soft, and makes the organs and bones integrated, stable and reliable, and is conducive to pressure reduction and fracture fixation. The invention is widely applicable, especially suitable for reduction and fixation of scaphoid fractures, does not need external fixation after internal fixation, is easy to operate, can avoid postoperative infection, and is beneficial to patients' early postoperative movement and recovery of wrist joint function.

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 an intraosseous self-reforming high-efficiency fracture reduction and fixation device for fracture fusion and fixation, especially suitable for reduction and fixation 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 methods. The wrist is the most flexible functional part of human beings. The wrist bone is composed of many bones with different structures, and the structure is very complicated. Once injured, its reduction and fixation are more difficult than the reduction of fractures in other parts. The reduction of the prior art generally uses Kirschner wires, fixed steel plates, etc. to reset and fix the fractured carpal bones. Since these devices have no pre...

AI Technical Summary

Problems solved by technology

The reduction of the prior art generally uses Kirschner wires, fixed steel plates, etc. to reset and fix the fractured carpal bone. Since these instruments have no pressurizing effect on the intercarpal joints, a long period of external fixation is required after the operation, which affects the postoperative function of the patient. Restoration has a certain impact, i.e. the restoration is slower

In addition, plate screw fixation needs to drill holes in the smaller carpal bone, which is complicated to operate, increases surgical trauma, and affects joint function. Especially for carpal scaphoid fixation, postoperative complications such as pain and wound infection may occur. Post-recovery is extremely unfavorable

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