Patent ID: 7722649
Filing Date: 2010-05-25
Classification: A61B

Abstract:
1. A dynamic stabilization device for bones, said device comprising: a first bone anchoring element; a second bone anchoring element; a rod having a longitudinal axis connecting the two bone anchoring elements; and an elastic element between the first and the second bone anchoring elements and acting on the first and the second bone anchoring elements to exert a force in a direction of the longitudinal axis; each bone anchoring element comprising a first section to be anchored in a bone and a second section to be connected to the rod; at least one of the bone anchoring elements comprising a polyaxial bone screw wherein the first section of the polyaxial bone screw comprises a shank for anchoring in the bone and the second section of the polyaxial bone screw comprises a receiving part, the receiving part being connected in an articulated manner to the shank for receiving the rod, and wherein the shank and the receiving part can be fixed relative to one another at an angle.