Patent ID: 7731749

Claim:
A bone anchoring device comprising: an anchoring element to be anchored to a bone or a vertebra and having a head; a connection element; a receiving part having a first end receiving the head, wherein the head is pivotable in the receiving part, and a second end comprising a recess for receiving the connection element; a first pressure element which exerts pressure on the head to lock the head in the receiving part; a second pressure element which exerts pressure on the connection element to press the connection element against the first pressure element and wherein the second pressure element directly applies pressure to the first pressure element; a closure element configured to exert pressure on the second pressure element; wherein a contour of the surface of at least the first pressure element or the second pressure element facing the connection element deviates from a contour of the surface of the connection element; and wherein the connection element is made of an elastic material.