Internal fixation device for femoral intertrochanteric fracture

Abstract

The invention discloses an internal fixation device for a femoral intertrochanteric fracture. The device comprises an intramedullary main nail, a near-end locking nail and a far-end locking nail, a first through hole is formed in the near end of the intramedullary main nail, a preset included angle is formed between the axis of the first through hole and the axis of the near end, and a second through hole is formed in the far end of the intramedullary main nail; the near-end locking nail penetrates through the first through hole, and one end of the near-end locking nail can be fixedly clampedinto the caput femoris through an expandable mode; the far-end locking nail penetrates through the second through hole. According to the internal fixation device for the femoral intertrochanteric fracture, one end of the near-end locking nail can be fixedly clamped into the caput femoris through the expandable mode, in this way, fixation of the near-end locking nail is firmer and more reliable, and the stability is better; fixation is conducted through an expansion mode, the expansion degree can be adjusted according to the degree of osteoporosis, then the fixation effect is achieved, and in addition, the device is convenient to operate.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an internal fixation device for femoral intertrochanteric fractures. Background technique [0002] Intertrochanteric fractures are more common in the elderly. Due to osteoporosis in the elderly, fractures can occur when the lower limbs are suddenly twisted or sharply excessively abducted or adducted during a fall, or when an external force directly impacts the greater trochanter. If left untreated, prolonged bed rest can cause complications such as bedsores. And improper treatment can cause malunion and affect the function of the affected limb, so it should be treated in time. [0003] At present, the surgical treatment of intertrochanteric fractures includes: gama nail fixation, PFNA (proximal femoral nail-spiral blade) fixation, PFN (proximal femoral nail) fixation and other fixation systems, each of which has its own characteristics and advantages, but there are sti...

AI Technical Summary

Problems solved by technology

[0003] At present, the surgical treatment of intertrochanteric fractures includes: gama nail fixation, PFNA (proximal femoral nail-spiral blade) fixation, PFN (proximal femoral nail) fixation and other fixation systems, each of which has its own characteristics and advantages, but there are still some problems in clinical application, such as unstable fixation, poor stability, poor anti-osteoporosis effect, cumbersome operation, etc.

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