US 11,730,492 B2
Method and device for joint replacement
Patrick M Birmingham, Chicago, IL (US)
Assigned to Zimmer, Inc., Warsaw, IN (US)
Filed by Zimmer, Inc., Warsaw, IN (US)
Filed on Dec. 30, 2019, as Appl. No. 16/730,503.
Application 14/559,260 is a division of application No. 13/943,862, filed on Jul. 17, 2013, abandoned.
Application 16/730,503 is a continuation of application No. 15/637,798, filed on Jun. 29, 2017, granted, now 10,555,743.
Application 15/637,798 is a continuation of application No. 14/559,260, filed on Dec. 3, 2014, granted, now 9,737,315.
Claims priority of provisional application 61/676,041, filed on Jul. 26, 2012.
Prior Publication US 2020/0129189 A1, Apr. 30, 2020
Int. Cl. A61B 17/16 (2006.01); A61F 2/32 (2006.01); A61F 2/36 (2006.01); A61B 17/17 (2006.01); A61B 17/00 (2006.01); A61F 2/30 (2006.01); A61F 2/46 (2006.01)
CPC A61B 17/1664 (2013.01) [A61B 17/00234 (2013.01); A61B 17/1666 (2013.01); A61B 17/175 (2013.01); A61F 2/32 (2013.01); A61F 2/3603 (2013.01); A61F 2002/30754 (2013.01); A61F 2002/3208 (2013.01); A61F 2002/4635 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A prosthesis comprising:
a hemiarthroplasty cup including:
an inner surface shaped and sized to accommodate a reamed or unreamed femoral head outer surface of a femoral head, wherein the inner surface comprises a hemisphere and is porous,
an outer surface shaped and sized to accommodate a reamed or unreamed acetabulum outer surface of an acetabulum socket, wherein the outer surface comprises a hemisphere and is smooth,
an edge wall connecting the inner surface and the outer surface, the edge wall extending contiguously to form a planar and circular surface,
wherein the hemiarthroplasty cup is configured to maintain allowance of articulation of the femoral head outer surface and the acetabulum socket relative to the hemiarthroplasty cup after implantation;
a cup femoral head prosthesis comprising;
a hemispherical inner surface configured to mate with a reamed femoral head outer surface; and
a hemispherical outer surface configured to mate with and freely articulate against the inner surface of the hemiarthroplasty cup; and
a receiving aperture extending between the inner surface and the outer surface, the receiving aperture configured to receive an end portion of a fastener; and
a fastener couplable to the cup femoral head prosthesis at the receiving aperture to provide securement of the cup femoral head prosthesis to the femoral head outer surface,
wherein the fastener comprises an end portion configured to be inserted into the receiving aperture without extending beyond the hemispherical outer surface.