Vertebral disk prosthesis and set of elements for the constitution of a vertebral disk prosthesis

Vertebral disk prosthesis (1), characterized in that it comprises:

• an upper plate (2), provided, on one side, with anchoring means (10, 11) to the lower side of the overlying vertebra (100) to be treated;
• a lower plate (4), provided, on one side, with anchoring means (20, 21) to the upper side of the underlying vertebra (101) to be treated;
• two assemblies (23, 15) forming first installation means, wherein each is attached to the upper plate (2) or the lower plate (4), both assemblies (23, 15) being arranged at a distance from each other in the frontal plane and substantially at equidistance from the median anteroposterior plane of the plate (4);
• and
• two elongated elastic rings (3), perpendicularly compressible to their lengths, and each comprising second installation means (15, 23) on a longitudinal portion (3a), each of these rings (3) being intended to be installed on one of said assemblies (23, 15) forming the first installation means by means of said second installation means (15, 23), being arranged substantially parallel with the anteroposterior plane of the prosthesis (1), and each of these rings (3) being intended to bear against the lower plate (4) and receive the upper plate (2).