06997955 is referenced by 49 patents and cites 58 patents.

An apparatus for replacing at least a portion of an intervertebral disc in a spinal column includes: a first member having a first vertebral contact surface for engagement with an endplate of a first vertebral bone in the spinal column, and having a first articulation surface that is defined by a plurality of concave arcs each having a respective radius of curvature about a corresponding axis substantially perpendicular to an anterior-posterior plane of the spinal column, and a plurality of convex arcs each having a respective radius of curvature about a corresponding axis substantially perpendicular to a lateral plane of the spinal column; and a second member having a second vertebral contact surface for engagement with an endplate of a second vertebral bone in the spinal column, and having a second articulation surface that is defined by a plurality of convex arcs each having a radius of curvature about a corresponding axis substantially perpendicular to the anterior-posterior plane of the spinal column, and a plurality of concave arcs each having a radius of curvature about a corresponding axis substantially perpendicular to the lateral plane of the spinal column, wherein: an intervertebral disc space is defined substantially between the first and second endplates of the first and second vertebral bones, and the radii of curvature of the first and second articulation surfaces are sized such that the first and second articulation surfaces engage one another when the first and second members are disposed in the intervertebral disc space to enable the first and second vertebral bones to articulate in at least one of flexion, extension and lateral bending.

Title
Cervical disc replacement
Application Number
10/776651
Publication Number
6997955 (B2)
Application Date
February 11, 2004
Publication Date
February 14, 2006
Inventor
Joseph P Errico
Greenbrook
NJ, US
Michael W Dudasik
Nutley
NJ, US
Antonio Valdevit
Fishkill
NY, US
Rafail Zubok
Midland Park
NJ, US
Agent
Lerner David Littenberg Krumholz & Mentlik
Assignee
SpineCore
NJ, US
IPC
A61F 2/44
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