Patent attributes
The present invention relates to elongation nails for long bones or similar. The elongation nail according to the invention is principally characterized in that it comprises a tube (10), another tube (20) mounted slidably and rotatably in the tube (10) in such a way that the end (21) of the tube (20) emerges from the end (11) of the tube (10), means (30) for coupling the two tubes (10, 20) in such a way that successive rotational oscillations of the two tubes with respect to each other about their longitudinal axis (100) cause a step-by-step translation of the two tubes with respect to each other. The nail also comprises an insert (40), mounted in a completely recessed position in the open end (12) of the first tube (10), and means (41) for locking the insert (40) with respect to the first tube, this insert having means (42) for cooperating with a lug of an ancillary instrument used to position the nail, said lug being able to be introduced into the end (12) of the tube (10) so as to cooperate with this insert (40).
