Patent ID: 9078676
Filing Date: 2015-07-14
Classification: A61B,A61F

Abstract:
1. A patella drilling system for use in preparing a resected patellar bone surface to receive a prosthetic patellar implant component, the patella drilling system comprising: a patella drill guide comprising a flat patella bone-facing surface, an opposite upper surface and an edge extending between the flat patella bone-facing surface and the opposite upper surface, the edge including a plurality of spaced openings; a plurality of spaced drill guide bores extending from the upper surface to and through the flat patella bone-facing surface, each drill guide bore having a central longitudinal axis that is perpendicular to the flat patella bone-facing surface; a recess in the upper surface of the patella drill guide; a clamp comprising a first arm and a second arm, the first arm having a first end and a second end and the second arm having a first end and a second end; the first end of the first arm having a free end segment adjacent to a contiguous segment and including a tip that is sized and shaped to be received in the recess in the upper surface of the patella drill guide; the first end of the second arm including a bone-gripping member, the bone gripping member including a spike; wherein: the first arm and second arm are connected through a pivotal connection and are pivotable with respect to each other to a position wherein the end segment of the first arm is oriented substantially perpendicular to the patella bone-facing surface of the drill guide, the tip of the first arm is received within the recess of the patella drill guide and the bone-gripping member extends toward the bone-facing surface of the patella drill guide; the patella drill guide has a thickness between the upper surface and the flat patella bone-facing surface; and the thickness of the patella drill guide adjacent to the drill guide bores is greater than the thickness of the patella drill guide adjacent to the spaced openings; the drill guide bores are spaced from the spaced openings; and the upper surface of the drill guide includes sizing indicia adjacent to the spaced openings, the sizing indicia including a plurality of lines intersecting the spaced openings.