Nail-stick system used for treating femoral fracture postoperation refractures

Abstract

The invention provides a nail-stick system used for treating femoral fracture postoperation refractures of children. The nail-stick system comprises a round stick, a connecting block and a screw; the connecting block comprises a block body; the block body comprises two connected hinge sheets; one hinge sheet is provided with a stick hole; the other hinge sheet is provided with a nail hole; when the two hinge sheets are combined together, a cavity is formed in the connecting position of the two hinge sheets; the round stick passes through the cavity to be connected with the connecting block; the screw sequentially passes through the stick hole and the nail hole to be fixed to the bone. According to the nail-stick system, multi-plane fracture fixation and fracture end blood supply protection can be achieved. According to the nail-stick system, minimally invasive operation is achieved; local injuries are small; fractures of the children do not insist on anatomical reduction; fracture healing is facilitated; the fracture stabilization is facilitated through multi-shaft locking; compared with an intramedullary nail, the nail-stick system has the advantages that the epiphysis is not injured, and the skeletal development is not influenced; the nail-stick system is particularly suitable for an repairing operation after fixing of an external fixator and a steel plate loses efficacy.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a nail-rod system for treating refracture after femur fracture in children. Background technique [0002] Children are active and their bones are soft, so they are prone to fractures. Children's fracture injuries are different from those of adults. Children's bones are constantly growing and developing, and their physiological functions and biomechanical properties are constantly changing. Children's bones are relatively Many fractures, thick periosteum, etc., are less likely to be completely fractured and displaced during fractures. Most of the fractures in children do not require surgery, but they occur near the joints, especially when the growth plate is injured, and surgical reduction is often required. [0003] Unlike the bones of adults, most fractures in children can be manually reduced. Sometimes the fractures are not well reset and there are dislocati...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a nail-rod system for treating postoperative refracture of femur fracture in children, which solves the problems in the prior art that children's fractures avoid internal fixation damage to the epiphysis, and the scope of internal fixation is limited; postoperative refracture of femur fracture It is necessary to avoid the problem of the original internal fixation screw hole or external fixation screw path

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