Patent ID: 9078772
Filing Date: 2015-07-14
Classification: A61B,A61F

Abstract:
1. A patella drill guide for use in preparing a resected patellar bone surface to receive a prosthetic patellar implant for a patient's knee joint, the patella drill guide comprising: a bone-gripping component for gripping a portion of the resected patellar bone surface; a base portion having a flat patella bone-facing surface, wherein a portion of the bone-gripping component extends outwardly from the flat patella bone-facing surface of the base in a first direction perpendicular the flat patella bone-facing surface; a patella trial portion having a curved contoured asymmetric articulation surface extending in a second direction opposite to the first direction and spaced apart from the flat patella bone-facing surface of the base portion in the second direction, the articulation surface being for evaluating a track of the patella during flexion of the knee joint; wherein the base portion has a plurality of drill guide bores extending through the base portion to the flat patella bone-facing surface of the base portion; and wherein the patella trial portion has a plurality of bores coaxially aligned with the drill guide bores of the base portion and the portion of each bore through the patella trial portion has a larger diameter than the aligned portion of the drill guide bore through the base portion.