Proximal femur internal fixation based on triangular stabilization principle

Abstract

The invention belongs to the technical field of medical apparatus and instruments, and discloses a proximal femur internal fixation based on a triangular stabilization principle, the proximal femur internal fixation comprises an intramedullary main nail, a lock nail, a first femur nail and a second femur nail, the intramedullary main nail is provided with a first through hole, a second through hole and a third through hole, the second femur nail is provided with a limiting bulge, and the limiting bulge is hinged with a stabilizing rod; the second femur nail is connected with a sliding sleeve and a memory spring, the sliding sleeve is hinged to a supporting rod, the memory spring is connected with a limiting ball, and the sliding sleeve is provided with a limiting hole; the using method of the proximal femur internal fixation based on the triangular stabilization principle comprises the steps that S1, the main intramedullary nail is connected; s2, the main intramedullary nail is connected with the thighbone body through a lock nail; s3, S4, the femoral body, the femoral neck and the femoral head are connected through the first femur nail and the second femur nail respectively; the proximal femur internal fixation solves the problems of redisplacement, bone nonunion, displacement of an internal fixation object and internal fixation fracture of a fracture end in the prior art, and is suitable for internal fixation of proximal femoral fractures.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a proximal femur internal fixation based on the triangular stabilization principle. Background technique [0002] Fractures of the proximal femur (neck and trochanter) account for 90% of hip fractures, and the disability rate of proximal femoral fractures in the elderly is as high as 50%. Even after active treatment and rehabilitation training, the mortality rate within one year is still 20% to 30% %, because intramedullary fixation has obvious advantages in the treatment of fractures at this site, intramedullary fixation has become the primary surgical method for the treatment of proximal femoral fractures. [0003] Fracture healing requires mechanical stability. The compression between the fracture fragments can provide mechanical stability for the fracture. The separation or distraction between the fracture fragments will affect the fracture healing. Therefore, the ten...

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Problems solved by technology

[0004] The present invention intends to provide an internal fixation of the proximal femur based on the principle of triangular stability, so as to solve the problem of redisplacement of the fracture end, nonunion, position change of internal fixation and internal fixation in the prior art proximal femur fracture surgery. The problem of breaking

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