interlocking intramedullary nail

Abstract

The invention discloses an intramedullary nail with a lock. At present, the intramedullary nail with the lock can be used for well controlling the bent shearing twisting stress at a fracture end, and becomes the application trend for the treatment of long bone fracture. The intramedullary nail comprises a compression screw (1), wherein the compression screw comprises a screw cap (6) and a screw rod (7); the screw cap is connected with the screw rod; the outer surface of the screw rod is provided with a coarse thread (8); the compression screw is screwed into an intramedullary nail rod (2); the intramedullary nail rod is connected with a fixing rod (3); the fixing rod is connected with a decompression head (4). The intramedullary nail is applied to internal fixation of femoral shaft fracture, tibial shaft fracture, femoral neck fracture, femoral intertrochanteric fracture or combined femoral shaft fracture, supracondylar fracture of femur, femoral intercondylar fracture or combined femoral shaft fracture and humeral shaft fracture, and is taken as a surgical tool for diaphyseal fractures.

Description

Technical field: [0001] The invention relates to a locking intramedullary nail. Internal fixation for femoral shaft fractures, tibial shaft fractures, femoral neck fractures, femoral intertrochanteric fractures or combined femoral shaft fractures, femoral supracondylar fractures, femoral intercondylar fractures or combined femoral shaft fractures, and humeral shaft fractures. Background technique: [0002] Currently, there are three types of intramedullary nails, including standard intramedullary nails, elastic intramedullary nails, and interlocking intramedullary nails. Because the interlocking intramedullary nail can better control the bending, shearing and torsion stress of the fracture end, it has become the mainstream application in the treatment of long bone fractures in the world. However, due to structural reasons, the original interlocking intramedullary nail has no The axial stress is often blocked, which can easily lead to fracture nonunion or delayed union, and ...

AI Technical Summary

Problems solved by technology

Because the interlocking intramedullary nail can better control the bending, shearing and torsion stress of the fracture end, it has become the mainstream application in the treatment of long bone fractures in the world. However, due to structural reasons, the original interlocking intramedullary nail has no There is often blocking axial stress, which can easily lead to nonunion or delayed union of fractures, and cannot achieve medical effects

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