Internal fixation system for femur

Abstract

The invention relates to an internal fixation system for femur. The internal fixation system comprises a fixing block, wherein the fixing block is composed of a plurality of independent blocks throughconnecting rods; the connecting rods are bent to enable the fixing block to be attached to the outer surface of the proximal end of the femur; a pressurizing nail penetrates through a pressurizing nail hole of the fixing block to fix the fixing block on the outer surface of the proximal end of the femur; an inner sleeve of the pressurizing nail is rotated through a special wrench, so that a central nail goes deep into the femoral neck to realize pressurization of the broken end of the femoral neck; a locking screw penetrates through a locking screw hole of the fixing block and also penetratesthrough a rectangular through hole of the pressurizing nail to prevent the pressurizing nail from rotating and retreating; an expansion rod is inserted into an expansion rod connector at the bottom of the fixing block and is pre-bent; a bone holding fixing block is connected to the expansion rod in a sleeving manner through a mounting hole and is adjusted to a corresponding fracture part of the femoral shaft part; the bone holding fixing block is fixed on the femoral shaft part through a side block locking nail; the bone holding fixing block is locked through self-expansion of the expansion rod; and meanwhile, the bone holding fixing block can also pre-tighten the locking screw through the expansion rod, so that the effect of preventing the locking screw from retreating is achieved.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a femoral internal fixation system. Background technique [0002] Proximal femoral fractures include femoral neck fractures, intertrochanteric fractures, and subtrochanteric fractures, accounting for about 7.3% of adult systemic fractures, and up to 23.8% of elderly fractures. With the aging of the global population, the incidence of proximal femoral fractures increases with age. According to reports, there are about 4.5 million cases of proximal femoral fractures in the elderly every year in the world, and the number of patients with proximal femoral fractures in the world is expected to increase to 21 million in the next 40 years, and the incidence of Asians accounts for about 50% of the global incidence. . The increasing treatment demands of proximal femoral fractures and the high quality of life of patients have become a challenge for orthopedic surgeons. [00...

AI Technical Summary

Problems solved by technology

[0004] At present, the implementation form of bone plate for the treatment of femoral fractures is relat

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