Lockable gooseneck boom nail system

Abstract

A lockable goose head nail system used as an internally fixing transplant for treating the fracture of femur is composed of a goose head nail with front screw, anti-turn polygonal rod at its rear part and a pressurizing screwed hole at its tail, a slide locking nail, a steel plate with several pressurizing screwed holes and a sleeve tube for containing the anti-turn polygonal rod and slide locking nail in it, and a locking unit.

Description

technical field [0001] The lockable goose head screw system Locked&Dynamic Hip Screw (LDHS) of the present invention relates to an internal fixation implant for fracture treatment, which is suitable for femoral neck base fracture, femoral intertrochanteric fracture, femoral subtrochanteric fracture, femoral Intertrochanteric osteotomy and hip arthrodesis are especially suitable for surgical treatment of intertrochanteric fractures accompanied by subtrochanteric fractures. Background technique [0002] Intertrochanteric fractures are very common, with 60% of femoral fractures being intertrochanteric fractures. Intertrochanteric fractures are often accompanied by subtrochanteric fractures, forming unstable fractures with multiple fracture lines. According to statistics, more than 40% of intertrochanteric fractures are unstable fractures. The main causes of unstable fractures: (1) falls in adults; (2) osteoporosis in the elderly. [0003] The currently recognized internal fi...

AI Technical Summary

Problems solved by technology

The compression goose-head nail system fixes the fractured femur through the goose-head plate, pressurizes the goose-head nail, and fixes the goose-head plate to the backbone with the help of sliding locking nails. However, this compression goose-head nail system is only suitable for Single fracture line fracture, in the unstable fracture with multiple fracture lines, because multiple free bone fragments are difficult to fix, the following problems will occur: (1) each fracture fragment collapses; (2) each fracture fragment is difficult to heal; (3) Dislocation of the femoral head, and may lead to avascular necrosis of the femoral head; (4) bone growth deformity

Gamma intramedullary nail is composed of main nail, lag screw and locking nail. By inserting the main nail into the medullary cavity of the fracture end, the main nail is fixed on the femoral head and femoral shaft through lag screw and locking. However, during the operation, Gamma intramedullary The nails have the following problems: (1) The wound surface is very large; (2) The surgical skills are high; (3) The surgical equipment is high, requiring C-arm X-ray machines, orthopedic operating tables and other equipment; (4) ) patients cannot complete the operation if the medullary cavity is too small

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