US 12,263,271 B2
Polymer interlock support structure and method of manufacture thereof
Reginald Lee, West Chester, PA (US); Philip Harris Frank, Maplewood, NJ (US); and Alvin Perez, Ringwood, NJ (US)
Assigned to Howmedica Osteonics Corp., Mahwah, NJ (US)
Filed by Howmedica Osteonics Corp., Mahwah, NJ (US)
Filed on Jul. 21, 2022, as Appl. No. 17/870,005.
Application 17/870,005 is a continuation of application No. 16/003,411, filed on Jun. 8, 2018, granted, now 11,400,181, issued on Aug. 2, 2022.
Claims priority of provisional application 62/517,456, filed on Jun. 9, 2017.
Prior Publication US 2022/0354989 A1, Nov. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61L 27/16 (2006.01); A61F 2/28 (2006.01); A61F 2/30 (2006.01); A61F 2/34 (2006.01); A61F 2/38 (2006.01); A61F 2/40 (2006.01); A61F 2/42 (2006.01); A61F 2/44 (2006.01); A61L 27/04 (2006.01); A61L 27/56 (2006.01)
CPC A61L 27/16 (2013.01) [A61F 2/28 (2013.01); A61F 2/30907 (2013.01); A61F 2/34 (2013.01); A61F 2/3877 (2013.01); A61F 2/389 (2013.01); A61F 2/4081 (2013.01); A61F 2/4202 (2013.01); A61F 2/4225 (2013.01); A61F 2/4261 (2013.01); A61F 2/44 (2013.01); A61L 27/04 (2013.01); A61L 27/56 (2013.01); A61F 2002/30011 (2013.01); A61F 2002/3028 (2013.01); A61F 2002/30331 (2013.01); A61F 2002/30609 (2013.01); A61F 2002/30733 (2013.01); A61F 2002/30784 (2013.01); A61F 2002/3092 (2013.01); A61F 2002/3093 (2013.01); A61F 2/3094 (2013.01); A61F 2002/30971 (2013.01); A61F 2002/30985 (2013.01); A61L 2430/02 (2013.01); A61L 2430/38 (2013.01)] 20 Claims
OG exemplary drawing
 
13. An orthopedic implant comprising:
a polymeric structure;
a metallic support structure;
an intermediate layer; and
a porous bone ingrowth layer having a different porosity than the intermediate layer, the intermediate layer being located between and inseparable from the bone ingrowth layer and the support structure,
wherein the polymeric structure extends through the support structure,
wherein the intermediate layer has a lesser porosity than the support structure and thereby prevents interdigitation of the polymeric structure across the intermediate layer and into the bone ingrowth layer, and
wherein the support structure adjoins the bone ingrowth layer.