US 12,220,319 B2
Shoulder arthroplasty implant system
Armodios M. Hatzidakis, Denver, CO (US); Heinz R. Hoenecke, Jr., Del Mar, CA (US); Scott R. Jacobson, Bend, OR (US); James D. Kelly, II, San Francisco, CA (US); Drew Miller, Atlanta, GA (US); Darryl D'Lima, San Diego, CA (US); and Nathaniel E. Skinner, Salt Lake City, UT (US)
Assigned to Integrated Shoulder Collaboration, Inc., Plainsboro, NJ (US)
Filed by Integrated Shoulder Collaboration, Inc., Plainsboro, NJ (US)
Filed on Apr. 12, 2021, as Appl. No. 17/228,377.
Application 17/228,377 is a continuation of application No. 16/208,324, filed on Dec. 3, 2018, granted, now 11,033,399.
Application 16/208,324 is a continuation of application No. 15/445,658, filed on Feb. 28, 2017, granted, now 10,172,714, issued on Jan. 8, 2019.
Claims priority of provisional application 62/300,853, filed on Feb. 28, 2016.
Prior Publication US 2021/0228368 A1, Jul. 29, 2021
Int. Cl. A61F 2/40 (2006.01); A61B 17/16 (2006.01); A61B 17/17 (2006.01); A61B 17/68 (2006.01); A61F 2/28 (2006.01); A61F 2/30 (2006.01); A61F 2/46 (2006.01)
CPC A61F 2/40 (2013.01) [A61B 17/1659 (2013.01); A61B 17/1684 (2013.01); A61B 17/1778 (2016.11); A61B 17/68 (2013.01); A61F 2/28 (2013.01); A61F 2/30 (2013.01); A61F 2/4003 (2013.01); A61F 2/4059 (2013.01); A61F 2002/2835 (2013.01); A61F 2002/30331 (2013.01); A61F 2002/30332 (2013.01); A61F 2002/305 (2013.01); A61F 2002/30841 (2013.01); A61F 2002/30884 (2013.01); A61F 2002/4022 (2013.01); A61F 2/4612 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A shoulder arthroplasty implant comprising:
a stem having a proximal portion, a distal portion, an anterior portion, a posterior portion, a medial portion, and a lateral portion, wherein the stem has a size and shape for insertion into an intramedullary canal of the humerus bone, the humerus having a metaphysis and a diaphysis, wherein the proximal portion comprises a cylindrical rim defining a face that is configured to sit flush with respect to the resection plane,
wherein the proximal portion of the stem comprises a proximal taper having a generally conical shape that is centered with respect to a central axis of the cylindrical rim, the proximal taper decreasing in size in a direction extending from the proximal portion toward the distal portion,
wherein the distal portion comprises a distal taper decreasing in size in a direction extending from the proximal portion toward the distal portion,
wherein the distal taper comprises at least a first taper in a direction extending between the medial portion and the lateral portion, the first taper comprising a convex lateral curve that extends from a most lateral edge of the cylindrical rim toward a distal end of the stem, and the first taper comprising a concave medial curve that extends from a most medial edge of the cylindrical rim toward the distal end of the stem, wherein the first taper is curved such that the distal end of the stem is offset laterally with respect to the central axis of the cylindrical rim,
wherein an anterior-posterior width at the distal portion is less than a medial-lateral width at the distal portion, and
wherein the shape of the stem is configured to load the metaphysis with a load greater than a load on the diaphysis.