Patent ID: 9510868
Filing Date: 2016-12-06
CPC Classification: A61B

Claim Text:
1. A polyaxial bone anchoring device comprising: a bone anchoring element having a shank configured to be anchored to a bone and a head; a receiving part configured to be coupled to the shank and to pivotably receive the head, the receiving part having a longitudinal axis and a channel for receiving a rod; a pressure member configured to be received in the receiving part and to exert pressure onto the head to lock the head in the receiving part; a locking member that is insertable into the channel, the locking member comprising a top end, a bottom end configured to face the pressure member, a deformable first portion provided at the bottom end, and a second portion provided at the bottom end; wherein when the head of the bone anchoring element, the pressure member and the rod are in the receiving part and the locking member is advanced into the channel along the longitudinal axis, the locking member is moveable between a first position wherein the deformable first portion is deformed axially towards the top end of the locking member while a load is applied by the deformable first portion to the pressure member such that the pressure member clamps the head in an angular position that remains adjustable, and a second position further into the channel wherein the deformable first portion is deformed further axially towards the top end of the locking member and wherein the second portion is in contact with the rod and clamps the rod.