Patent ID: 6669732
Filing Date: 2003-12-30
Classification: A61F

Abstract:
A spinal disc prosthesis, comprising:a first plate having a superior surface and an inferior surface; a second plate; and an elastomeric core interposed between said first plate and said second plate, wherein said first plate has an outer peripheral edge portion, wherein said outer peripheral edge portion includes (i) a first rim extending from said superior surface and configured to define a first recess on said superior surface, (ii) a second rim extending from said inferior surface and configured to define a second recess on said inferior surface, and (iii) a flange interposed between a first plane defined by said superior surface and a second plane defined by said inferior surface, and wherein said flange has (i) an upper surface which is parallel to said first plane, (ii) a lower surface which is parallel to said upper surface, and (iii) a curved surface which connects said upper surface and said lower surface.