Patent ID: 7060099

Claim:
Disk prosthesis for cervical vertebrae comprising: a first ( 2 ) and a second plate ( 3 ) intended to be fixed on neighboring cervical vertebrae, and a means of articulation ( 7 ) inserted between the two plates placed in superimposed position, characterized in that the means of articulation ( 7 ) further comprises: a means authorizing flexion-extension movements in a sagittal plane (S) according to an angular clearance limited by a means of stop in flexion-extension ( 9 ), a means authorizing lateral inflexion movements in a plane perpendicular to the sagittal plane (S) according to an angular clearance limited by a means of stop in lateral inflexion ( 12 ), a means authorizing relative rotation movements between the first ( 2 ) and second ( 3 ) plates according to an angular clearance limited by a means of stop in relative rotation, a means for assembling ( 17 ) the first ( 2 ) and second ( 3 ) plates so as to form a prosthesis consisting of a single piece.