Knife edge structure, hip screw and femoral fracture treatment device

Abstract

The invention discloses a knife edge structure, a hip screw and a femoral fracture treatment device, the body of the knife edge structure has a hub-and-spoke type cross section, each hub-and-spoke type portion of the knife edge structure comprises at least one knife groove and knife blades formed at tops of two side walls of the knife groove, and projections of tops of the knife blades are disposed in the bottom of the knife groove. The knife edge structure has a special structure with a small opening and a large cavity, the problem that a fixed position is not stable due to the fact that rotation easily occurs can be prevented, position of the femoral fracture treatment device having the hip screw with the knife edge structure can be durable during a long-term use process, and the bone can be properly healed.

Description

technical field [0001] The invention relates to a medical device, in particular to a blade structure, a hip screw and a femur fracture treatment device with the blade structure. Background technique [0002] In the medical sense, a femoral fracture is a disease in which the femur is partially or completely broken due to trauma. The so-called "one hundred days of bone injury", femur fracture is even more difficult to recover, the fracture is very painful, the movement is inconvenient and the recovery period is long. Treatment of femoral fractures should follow the three basic principles of reduction, fixation, and functional exercise. Reduction is to restore the displaced femoral end to its normal or near-normal position after the fracture, so as to restore the supporting function of the femur. In order to maintain the position of the bone structure after correction and reduction, a femoral fracture treatment device is usually used. [0003] Femoral fractures typically occu...

AI Technical Summary

Problems solved by technology

In order to achieve this requirement, positioning bolts are generally used in the intramedullary nail to position the hip screw passing through the transverse hole to prevent relative movement or rotation between the intramedullary nail and the hip screw, or the hip screw is set in a non-circular shape to prevent However, these measures still cannot completely control the rotation and lateral micromotion of the broken end of the fracture, and the positioning part is gradually twisted and loosened due to the long-term external force in the use process, which may easily lead to rotation and axial screw rotation of the hip screw. Offset, delaying the bone healing process

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