US 12,220,320 B2
Implant and anchor assembly
George Sikora, Bridgewater, MA (US); and Steven W. Ek, Bolton, MA (US)
Assigned to ARTHROSURFACE INCORPORATED, Franklin, MA (US)
Filed by ARTHROSURFACE INCORPORATED, Franklin, MA (US)
Filed on Aug. 10, 2021, as Appl. No. 17/398,783.
Application 17/398,783 is a continuation of application No. 15/943,956, filed on Apr. 3, 2018, granted, now 11,083,587.
Application 15/943,956 is a continuation of application No. 14/640,529, filed on Mar. 6, 2015, granted, now 9,931,219, issued on Apr. 3, 2018.
Claims priority of provisional application 61/950,762, filed on Mar. 10, 2014.
Claims priority of provisional application 61/949,789, filed on Mar. 7, 2014.
Claims priority of provisional application 61/949,824, filed on Mar. 7, 2014.
Claims priority of provisional application 61/949,774, filed on Mar. 7, 2014.
Prior Publication US 2022/0062000 A1, Mar. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/40 (2006.01); A61B 17/064 (2006.01); A61F 2/28 (2006.01); A61F 2/30 (2006.01); A61F 2/46 (2006.01); A61B 17/04 (2006.01)
CPC A61F 2/40 (2013.01) [A61B 17/0642 (2013.01); A61F 2/28 (2013.01); A61F 2/30 (2013.01); A61F 2/30756 (2013.01); A61F 2/4081 (2013.01); A61F 2/4606 (2013.01); A61F 2/4618 (2013.01); A61F 2/4637 (2013.01); A61B 2017/0409 (2013.01); A61B 2017/044 (2013.01); A61B 2017/0648 (2013.01); A61F 2002/30331 (2013.01); A61F 2002/30364 (2013.01); A61F 2002/30405 (2013.01); A61F 2002/30462 (2013.01); A61F 2002/305 (2013.01); A61F 2002/30649 (2013.01); A61F 2002/3085 (2013.01); A61F 2002/4627 (2013.01); A61F 2002/4628 (2013.01); A61F 2310/00011 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An implant assembly comprising:
an implant having a load bearing surface with a contour corresponding to a patient's articular surface, and a bone facing surface including a first fixation element;
an anchor configured to be secured to bone beneath said patient's articular surface, said anchor including a second fixation element; and
wherein said first fixation element is configured to be secured to said second fixation element;
wherein said first fixation element and said second fixation element are configured to mechanically connect with each other to form a mechanical connection therebetween, said first fixation element and said second fixation element are further configured to frictionally engage with each other to form a frictional connection therebetween;
one of said first fixation element and said second fixation element comprises a protrusion comprising a protrusion sidewall having an exterior surface, an interior surface defining a cavity, and a thickness extending therebetween;
said protrusion sidewall includes at least one protrusion sidewall fixation feature, said at least one protrusion sidewall fixation feature comprises a plurality of ribs and at least one plurality of relief recesses extending through the exterior surface of the protrusion sidewall to a non-zero distance from the interior surface of the protrusion sidewall, and wherein the plurality of ribs are separated by the plurality of relief recesses.