Patent ID: 7867279
Filing Date: 2011-01-11
Classification: A61F

Abstract:
1. An intervertebral disc prosthesis comprising: a) a first plate including a socket; b) a second plate having a first coupling member that includes an inner wall structure that defines a recess; and c) a core positioned between the socket and the recess, the core comprising a domed surface engaging the socket of the first plate and a plug engaging the second plate, wherein the core has a second coupling member that includes a substantially cylindrically-shaped outer wall structure that defines the plug, and further the second coupling member is positioned within the recess so that the substantially cylindrically-shaped outer wall structure contacts the inner wall structure in a friction fit manner, wherein the second plate further includes a rim positioned completely around an opening defined by the recess, and the core further includes a ledge positioned in contact with the rim.