Patent ID: 9149300
Filing Date: 2015-10-06
Classification: A61B

Abstract:
1. A bone anchoring device comprising: an anchoring element comprising a shaft for anchoring in the bone, and a head; a receiving part for receiving the head and for receiving a rod to be connected to the anchoring element, the receiving part being formed in one piece and having a top end and a bottom end, a bore extending from the top end to the bottom end, an inner wall defining the bore and forming a spring element having a spring force, a substantially U-shaped channel adjacent to the top end for receiving the rod, and a seat adjacent to the bottom end for accommodating the head, wherein the anchoring element is to be inserted from the top end; and a pressure element that is able to exert pressure onto the head, wherein the anchoring element is pivotable with respect to the receiving part and can be fixed at an angle by exerting pressure via the pressure element onto the head, wherein the spring element comprises a protrusion at a distal end that, in a relaxed state, extends into the bore, and wherein, a top surface of the protrusion facing the top end and a bottom surface of the pressure element are shaped such that, when the pressure element is inserted through the top end and contacts the protrusion, the spring element moves away from the bore to allow the pressure element to pass farther into the receiving part.