Patent ID: 7892259

Claim:
A bone anchoring device, comprising: a receiving part for receiving a rod, the receiving part having a first bore coaxial with a longitudinal axis and a second bore, the receiving part comprising a through hole; an anchoring element having a first end for insertion into the bone and a second end positionable within the second bore, the second end comprising a surface having a spherically shaped surface portion and a portion recessed from the spherically shaped surface portion; at least one pin provided to the second bore of the receiving part by insertion into the through hole, such that the pin protrudes from an inner surface of the second bore and engages with the portion recessed from the spherically shaped surface portion of the second end of the anchoring element, such that the anchoring element is pivotable relative to the receiving part around a single axis of rotation; a fixation element; a pressure element configured to be arranged between the second end of the anchoring element and the fixation element for transmitting pressure from the fixation element to the second end in order to lock the angular position of the anchoring element; wherein the pressure element is movable from a first position wherein the pressure element contacts the second end of the anchoring element and the anchoring element is pivotable relative to the receiving part around the single axis of rotation to a second position wherein the angular position of the anchoring element is locked; wherein the pin is spaced apart from the pressure element in the first position.