Patent ID: 8506611

Claim:
A bone anchoring device comprising: a receiving part for receiving a rod, the receiving part having a longitudinal axis, a first end and a second end, the receiving part further having a first bore coaxial with the longitudinal axis and extending from the first end to an opening at the second end, the opening is smaller than the bore and the first bore tapers toward the opening in a tapered section that forms a seat; an anchoring element having a first end for insertion into the bone and a second end, the second end including a head that is positionable against the seat, 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; and a pressure element configured to lock an angular position of the anchoring element with respect to said receiving part, the pressure element having two legs extending toward the seat of the receiving part and terminating in the bore at the start or before the tapered section when assembled and locked in place; 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.