US 12,310,856 B2
Femoral component for bone conservation
Mark Ellsworth Nadzadi, Memphis, TN (US); Jason Karl Otto, Sioux Falls, SD (US); and Amit Mistry, Weston, FL (US)
Assigned to Mako Surgical Corp., Weston, FL (US)
Filed by Mako Surgical Corp., Weston, FL (US)
Filed on Sep. 21, 2023, as Appl. No. 18/370,945.
Application 18/370,945 is a continuation of application No. 17/360,095, filed on Jun. 28, 2021, granted, now 11,793,649.
Application 17/360,095 is a continuation of application No. 16/249,462, filed on Jan. 16, 2019, abandoned.
Application 16/249,462 is a continuation of application No. 14/578,007, filed on Dec. 19, 2014, granted, now 10,219,908, issued on Mar. 5, 2019.
Claims priority of provisional application 61/921,964, filed on Dec. 30, 2013.
Prior Publication US 2024/0008992 A1, Jan. 11, 2024
Int. Cl. A61F 2/38 (2006.01); A61B 17/16 (2006.01); A61B 34/30 (2016.01); A61B 34/37 (2016.01); A61F 2/30 (2006.01)
CPC A61F 2/3859 (2013.01) [A61B 17/1675 (2013.01); A61B 34/30 (2016.02); A61B 34/37 (2016.02); A61F 2002/30878 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A distal femoral implant comprising:
an anterior portion including an anterior planar bone interface surface sized and configured to engage a resected anterior surface of a distal femur and an anterior protrusion on the anterior portion, the anterior protrusion having a convex surface along its length;
a distal portion extending from the anterior portion, the distal portion including a concavely contoured bone interface surface sized and configured to engage a resected distal surface of the distal femur; and
a pair of posterior condylar portions extending posteriorly from the distal portion, each posterior condylar portion of the pair of posterior condylar portions including a posterior planar bone interface surface sized and configured to engage a resected posterior surface of the distal femur and a posterior protrusion on the posterior planar bone interface surface, the posterior protrusion of each posterior condylar portion having a convex surface along its length,
wherein the anterior protrusion is oriented such that when the distal femoral implant is positioned on a distal femur, an elongate dimension of the anterior protrusion is at least partially in a superior-inferior direction,
wherein a first part of each of the posterior protrusions overlies a concave portion of the concavely contoured bone interface surface of the distal portion, and a second part of each of the posterior protrusions overlies a flat portion of the posterior planar bone interface surface of each of the posterior condylar portions, and
wherein each posterior planar bone interface surface faces the anterior planar bone interface surface.