Patent ID: 7749258

Claim:
A bone anchoring device comprising: a receiving part for receiving a rod, the receiving part having a longitudinal axis, a first bore coaxial with the longitudinal axis and a second bore; an anchoring element having a first end for insertion into the bone and a second end positionable within the second bore, the second end including a head, the anchoring element being movable relative to the receiving part in a limited angular range about the longitudinal axis, the angular range lying in a single plane; and a fixation element cooperating with the receiving part to lock the anchoring element relative to the receiving part; a pressure element having a recess shaped to receive the rod, the pressure element configured to lock an angular position of the anchoring element with respect to said receiving part; wherein movement of the anchoring element before locking is limited to the single plane by a form-fit connection between the head of the anchoring element and the pressure element, wherein the form-fit connection comprises a guiding surface of the head that engages a guiding surface of the pressure element, the engaging guiding surfaces cooperating to permit movement of the anchoring element relative to the receiving part in the single plane and to prevent movement of the anchoring element relative to the receiving part out of the single plane, and wherein the engaging guiding surfaces are transverse to the single plane.