The invention concerns a device comprising at least a fixed element (2), secured to a vertebra, at least a mobile element (10), capable of moving relative to the or each fixed element, and at least an intermediate element (22) for articulating the mobile element relative to the fixed element. The intermediate...http://www.google.fr/patents/US7691131?utm_source=gb-gplus-shareBrevet US7691131 - Intervertebral connecting device
