A dynamic longitudinal connecting member assembly includes an anchor member having an integral or otherwise fixed elongate core of circular or non-circular cross-section. The core is pre-tensioned and extends through at least one elastic spacer and at least one outer sleeve. The anchor member and the...http://www.google.fr/patents/US7951170?utm_source=gb-gplus-shareBrevet US7951170 - Dynamic stabilization connecting member with pre-tensioned solid core
Dynamic stabilization connecting member with pre-tensioned solid core
