Patent ID: 7850718

Claim:
A connector device for spinal osteosynthesis, said connector device comprising bone anchor means, a connector designed to receive a coupling rod and assembled to one end of the anchor means, said connector being pivotable relative to said bone anchor means in a first direction parallel to an axial direction of said coupling rod and in a second direction on an axis perpendicular to the axial direction of said coupling rod, and tightening means for immobilizing the coupling rod, the connector and the anchor means being assembled together by a pin passing through the anchor means, said pin constituting a pivot coupling, and stabilization means for stabilizing the connector relative to the anchor means in a plane containing the rod and the anchor means when implanted in the patient, and wherein said pin has a fixed integral peripheral convex portion forming a portion of an exterior surface of said pin and which convex portion of the pin is disposed inside said anchor means so as to enable said anchor means to move over an angular displacement on said pin, wherein said stabilization means are constituted by said pin having an axial direction parallel to an axial direction of said coupling rod, allowing a degree of axial rotation only, to the exclusion of tilting in a plane perpendicular to the rod.