Patent ID: 7608075
Filing Date: 2009-10-27
Classification: A61B

Abstract:
1. A humeral nail for consolidating bone fragments of a humeral head, the humeral nail comprising: an elongated body adapted for insertion into a medullary canal of a humerus, the elongated body having a proximal part with a plurality of orifices and a stud; a plurality of screws insertable into the orifices to engage with, and to consolidate, the fragments of the humeral head; a hollow sheath comprising a notch sized to accept the stud and a plurality of openings which correspond approximately to locations of the plurality of orifices on the proximal part, the plurality of openings comprising a first portion with a diameter that corresponds approximately to a diameter of the orifices, and a second portion with a cross-section less than the diameter of the orifices; and the hollow sheath sized to freely slide axially along an external surface of the proximal part between a free passage position in which the first portions of the openings on the sheath are approximately aligned with the orifices on the proximal part, and a locking position in which the first portions of the openings on the hollow sheath are no longer coincident with the orifices on the proximal part and edges of the second portion of the openings contact surfaces on the screws, respectively.