Patent ID: 7338493

Claim:
A bone screw anchor system operable to secure an implant to a bone using a fastening device comprising: an intermediary portion having external threads; an open tip located proximate a first end of said intermediary portion; a head defining a groove capable of cooperating with a driving tool operable to facilitate implantation of said anchor within said bone, said head located proximate a second end of said intermediary portion opposite said open tip; a proximal portion between said head and said intermediary portion, said proximal portion is devoid of external threads, said proximal portion has a diameter that is at least approximately the same as a diameter of said external threads of said intermediary portion; and an interior bore extending through said head, through said proximal portion, and through said intermediary portion, said bore having threads at said proximal portion operable to cooperate with corresponding threads of the fastening device; wherein said fastening device secures the implant to the bone such that the implant is secured between the fastening device and the anchor.