Patent ID: 8382760

Claim:
A intramedullary nail to be inserted into a fractured long bone, for example a femur, comprising: a rod extending between a proximal part and a distal part; a tubular sleeve into which said rod is inserted coaxially, said tubular sleeve having an opening on its apex; at least a first pair of expansion means located in the distal part of said rod, said expansion means being made of a shape-memory material in order to assume a first configuration of rest in which they are arranged inside recesses in the lateral wall of the nail, and a second configuration of use in which said means are located projecting from the lateral wall of the nail; slots are present on the tubular sleeve in correspondence with the shape-memory means to allow for the fastening onto the bone when the means assume said second configuration of use; wherein said rod is of the cannulated type having an internal cavity with an opening on its apex; and wherein said rod comprises in correspondence with the proximal end a transversal channel for the passage of a stop screw, said tubular sleeve comprising a pair of opposite apertures placed in alignment with said channel, an inlet for said channel being located directly on the apex of the rod in correspondence with the opening of its internal cavity and one of said opposite aperture of the tubular sleeve coinciding with the opening that is present on the apex of the tubular sleeve; and wherein the distal part of the rod does not have any through-channel for a screw.