A bone anchoring device includes an anchoring element having a shank to be anchored in a bone or a vertebra and a head, a connection element for connecting at least two anchoring elements, a receiving part having a first end receiving the head, wherein the head is pivotable in the receiving part, and...http://www.google.com/patents/US7731749?utm_source=gb-gplus-sharePatent US7731749 - Bone anchoring device
