Patent ID: 9480506
Filing Date: 2016-11-01
CPC Classification: A61B

Claim Text:
1. An interlocking compression nailing system comprising: an intramedullary nail adapted to be driven into a hollow bone, and wherein the intramedullary nail comprises a longitudinal bore, and wherein the longitudinal bore is open at both free ends of the intramedullary nail, and wherein the intramedullary nail comprises three portions, and wherein the three portions are a proximal portion, middle portion and a distal portion; a plurality of fastener screws provided to fix the intramedullary nail to a plurality of bone fragments in a fractured bone to avoid rotational and axial instability, and wherein the intramedullary nail is interlocked proximally and distally by the plurality of fasteners, and wherein the plurality of fasteners are self-tapping fastener screws, and wherein each fastener screw contains a self-cutting threaded nib, a threaded shaft and a head with a countersunk surface for a screw driver and a compression device configured to provide a compression force on a fracture site and the plurality of bone fragments that are fixed between proximal and distal portion of intramedullary nail and wherein the compression device comprises four pre-assembled components, and wherein the pre-assembled components are a set screw, an elastic component, a distal cap and a connector screw, and wherein the elastic component is made of a biocompatible material configured to apply a desired compression force on the fracture site, and wherein the biocompatible material is polycaprolactone; wherein the set screw is a cylindrical headless screw with female threads, and wherein the female threads are arranged along an entire length of the screw, and wherein the female threads are adapted to be in direct engagement with the internal threaded portion in the longitudinal bore of the intramedullary nail, and wherein the set screw has a longitudinal bore, and wherein the setscrew has openings at both free ends, and wherein a distal opening of the set screw is restricted by a surrounding flange that limits an outlet diameter of the bore in the setscrew.