Intermarrow nail to be inserted into a fractured long bone

Abstract

The invention concerns an 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; 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 disposed 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; where said rod () comprises in correspondence with the proximal end () a transversal channel () for the passage of a stop screw (S), said tubular sleeve () comprising a pair of opposite apertures () placed in alignment with said channel (); and where the distal part () of the rod () does not have any through-channel for a screw.