US 12,383,407 B2
Tibial bearing component for a knee prosthesis with improved articular characteristics
Raymond C. Parisi, Wakarusa, IN (US); Abraham P. Habegger, Warsaw, IN (US); and Jeff Blaylock, Fort Wayne, IN (US)
Assigned to Zimmer, Inc., Warsaw, IN (US)
Filed by Zimmer, Inc., Warsaw, IN (US)
Filed on Dec. 28, 2020, as Appl. No. 17/134,885.
Application 14/740,690 is a division of application No. 13/459,041, filed on Apr. 27, 2012, granted, now 9,072,607.
Application 17/134,885 is a continuation of application No. 15/720,866, filed on Sep. 29, 2017, granted, now 10,898,337.
Application 15/720,866 is a continuation of application No. 14/740,690, filed on Jun. 16, 2015, granted, now 9,788,954.
Claims priority of provisional application 61/561,657, filed on Nov. 18, 2011.
Claims priority of provisional application 61/577,293, filed on Dec. 19, 2011.
Claims priority of provisional application 61/592,576, filed on Jan. 30, 2012.
Claims priority of provisional application 61/621,361, filed on Apr. 6, 2012.
Claims priority of provisional application 61/621,363, filed on Apr. 6, 2012.
Claims priority of provisional application 61/621,364, filed on Apr. 6, 2012.
Claims priority of provisional application 61/621,366, filed on Apr. 6, 2012.
Prior Publication US 2021/0113340 A1, Apr. 22, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/38 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/3868 (2013.01) [A61F 2/3886 (2013.01); A61F 2/389 (2013.01); A61F 2002/30604 (2013.01); A61F 2002/30616 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A tibial bearing component for articulation with a medial femoral condyle and a lateral femoral condyle, the tibial bearing component defining a tibial bearing component coordinate system comprising:
a bearing component transverse plane extending along a medial/lateral direction and an anterior/posterior direction;
a bearing component coronal plane extending along a proximal/distal direction and the medial/lateral direction, the bearing component coronal plane perpendicular to the bearing component transverse plane; and
a bearing component sagittal plane extending along the anterior/posterior direction and the proximal/distal direction, the bearing component sagittal plane perpendicular to the bearing component transverse plane and the bearing component coronal plane,
the tibial bearing component comprising:
an articular surface and an opposing distal surface, the distal surface is parallel to the bearing component transverse plane, the articular surface including a medial articular compartment and a lateral articular compartment that are sized and dished shaped for articulation with the medial femoral condyle and the lateral femoral condyle respectively, the medial articular compartment and lateral articular compartment separated from one another by the bearing component sagittal plane,
the lateral articular compartment comprising a plurality of coronal cross-sectional profiles defining a lateral set of coronal distal-most points spanning a lateral anterior/posterior extent, the lateral set of coronal distal-most points defining a lateral articular track,
the lateral articular track having an anterior portion and a posterior portion, the posterior portion defining a curved line when projected onto the bearing component transverse plane.