Patent ID: 8673009
Filing Date: 2014-03-18
Classification: A61B,A61F

Abstract:
1. A lumbar disc prosthesis defining a medial-lateral plane and a anterior-posterior plane, the lumbar disc comprising: a first pair of disc members including a first member having a vertebral endplate contact surface and a recessed portion on an opposing surface thereof, and a second member having a vertebral endplate contact surface and a protruding portion on an opposing surface thereof, the protruding portion of the second member engaging the recessed portion of the first member during use, the protruding portion defining a curvature in the medial-lateral plane defining a plurality of different radii values, the protruding portion extending along substantially the entire width of the medial-lateral plane; and a second pair of disc members, said second pair of disc members also including first and second members.