Patent ID: 9681895
Date: 2017-06-20
CPC Classifications: A61B

Claim:
1. A bone anchoring device comprising: a receiving part for coupling a rod to a bone anchoring element, the receiving part comprising: a locking ring configured to be arranged around the head receiving portion, wherein an engagement structure projects from an outer surface of the locking ring for engagement with a tool; wherein when the locking ring is around the head receiving portion at a first position, an end of the locking ring abuts a wall of the receiving part to restrict movement of the locking ring towards the first end of the rod receiving portion, and the engagement structure projects farther radially outwardly than the wall extends relative to a central axis of the bone anchoring device; wherein the locking ring can assume a locking position where the locking ring exerts a compressive force on the head receiving portion of the receiving part to lock the head of the bone anchoring element when the head is held in the head receiving portion; and wherein the locking ring is movable out of the locking position towards the first end of the rod receiving portion.