A dynamic fixation medical implant having at least two bone anchors includes a longitudinal connecting member assembly having at least one transition portion and cooperating outer sleeve, both the transition portion and sleeve being disposed between the two bone anchors. In a first embodiment, the transition...http://www.google.es/patents/US20080177317?utm_source=gb-gplus-sharePatente US20080177317 - Dynamic stabilization connecting member with cord connection
Dynamic stabilization connecting member with cord connection