Patent ID: 7862614

Claim:
An intervertebral prosthesis system comprising: (a) at least one first type of intervertebral prosthesis comprising a first cover plate configured to be connected to a first vertebral body endplate and comprising a seat, a second cover plate configured to be connected to a second vertebral body endplate, and a first prosthesis core which is held by the seat of the first cover plate and forms an articulation with the second cover plate, the first cover plate, the second cover plate and the first prosthesis core being configured relative to one another so that the first prosthesis core remains movable relative to the first cover plate at least in an anterior-posterior direction relative to the first and second vertebral body endplates after the intervertebral prosthesis system is implanted, wherein the seat comprises a movement-limiting device configured as a guide device with two opposite, parallel lateral guide rails for guiding a displacement of the prosthesis core in the anterior-posterior direction; and (b) at least one second type of intervertebral prosthesis having an external configuration corresponding to an external configuration of the first type of intervertebral prosthesis and comprising a third cover plate configured to be connected to a third vertebral body endplate, a fourth cover plate configured to be connected to a fourth vertebral body endplate and a second prosthesis core which is held by a seat on the third cover plate and forms an articulation with the fourth cover plate, wherein the second type of intervertebral prosthesis does not permit anterior-posterior mobility between the second prosthesis core and the third cover plate.