Patent ID: 9066805
Filing Date: 2015-06-30
Classification: A61B,A61F,F04C

Abstract:
1. A shoulder prosthesis for use with a proximal humerus, the shoulder prosthesis comprising: a fixation plate comprising an elongate body portion arranged to extend distally along the lateral external surface of the humerus, the elongate body portion having a lateral side with an opening formed thereon and a plurality of fastener holes arranged to receive bone fasteners for securing the fixation plate to the bone; a tubular barrel integrally formed with and extending from the fixation plate, the barrel configured to be inserted into a bore formed in the proximal humerus extending from a lateral bone surface to a resected humeral head, the barrel having an axis and a barrel bore, the barrel bore communicating with the opening in the fixation plate; a connector rod having a first end and a second end, the second end being slidable within the barrel bore, the connector rod having a connector bore extending therethrough; and an articulation component having a bearing surface, the articulation component coupled to the first end of the connector rod; a tubular adjustment sleeve rotatably and entirely disposed within the barrel, the adjustment sleeve having a first end with an exterior screw thread, a second end defining a sleeve head portion, and an adjustment sleeve bore extending therethrough, the first end of the adjustment sleeve being threadably coupled to the connector bore of the connector rod, the adjustment sleeve rotatable between a first position, whereat the first end of the connector rod is a first distance as measured from the lateral side of the fixation plate, to a second position, whereat the first end of the connector rod is a second distance as measured from the lateral side of the fixation plate, the second distance being greater than the first distance; and a locking screw disposed within the adjustment sleeve bore and threadably coupled to the connector rod, the locking screw comprising a screw head portion, wherein the barrel includes an inner surface that forms the barrel bore, the barrel comprises an annular flange formed on the inner surface and adjacent to the opening formed on the lateral side of the fixation plate, the annular flange extending from the inner surface toward the axis of the barrel and defining a first side and a second side, the sleeve head portion disposed on the first side of the annular flange and the screw head portion disposed on the second side of the annular flange, and wherein when the locking screw engages the connector rod bore the annular flange is positioned between the sleeve head portion and the screw head portion.