Patent ID: 9730734
Date: 2017-08-15
CPC Classifications: A61B

Claim:
1. A bone anchoring device for coupling a rod to a bone anchoring element, the bone anchoring device comprising: a receiving part having a first end configured to pivotably receive a head of the bone anchoring element, the receiving part further having a recess with a substantially U-shaped cross-section for receiving the rod, the recess defining two legs, the legs having an internal advancement structure; a pressure element configured to contact the head to exert pressure on the head to lock an angular position of the head relative to the receiving part; and a locking assembly comprising: wherein when the locking assembly is in the receiving part and the first locking element is advanced axially in the receiving part at a first speed, the second locking element is configured to move axially relative to the receiving part at a speed different than the first speed, such that the second locking member urges the pressure element towards the first end of the receiving part to lock an inserted head relative to the receiving part and the first locking element locks an inserted rod relative to the receiving part.