Bundling and fixing device based on proximal femoral nail antirotation (PFNA) system

Abstract

The invention discloses a steel wire bundling and fixing device based on a proximal femoral nail antirotation (PFNA) system, comprising a ring-shaped gasket and an insertion-type U-shaped belt loops steel plate, etc., and the ring-shaped gasket is matched with a tail cap and attached between the tail end of a main nail and the tail cap of the PFNA system, being a ring-shaped titanium alloy sheet.The insertion-type U-shaped belt loops steel plate is matched with the trochanter spiral blade or lag screw of the PFNA system, and comprises an insertion rod, a clamping block, and a U-shaped sheet.On the basis of fixing intertrochanteric fracture by the PFNA system, by the ring-shaped gasket and an insertion-type U-shaped belt loops steel plate, wires are utilized for bundling and fixing the fracture of front and back walls, and outer side walls of the trochanter part and the rip parts of the large trochanter part, to provide a support with sufficient strength for the intertrochanteric fracture, so as to give a guarantee for early movement out of a bed and smooth healing of the fracture of a patient, while providing a minimally invasive surgery operation device, with simple operation and low cost.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a binding fixation device based on a proximal femoral intramedullary nail system. Background technique [0002] Intertrochanteric fractures accompanied by fractures of the anterior and posterior walls of the trochanter, the lateral wall, and the tip of the greater trochanter are unstable fractures, which have always been difficult in clinical treatment. The goal of treatment is to achieve stable internal fixation after reduction. The patient returned to preinjury level of function without pain or limp. For unstable intertrochanteric fractures, especially when the medial wall is incomplete, the stress on the lateral wall as a tension side increases significantly, and deformities such as coxa varus are prone to occur. Most patients with hip fractures are elderly. Even if there is a small trochanteric support on the medial side, it is less likely that the medial side ca...

AI Technical Summary

Problems solved by technology

[0004] At present, the internal fixation methods for reconstruction of the lateral wall have been controversial. Reconstruction methods such as long screws or small metaphyseal plates cannot use the small incision of the minimally invasive intramedullary nail, and require complete incision and exposure of the lateral wall before internal fixation can be performed. , thereby disrupting the biological environment of the fracture

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