Patent ID: 8348982
Filing Date: 2013-01-08
Classification: A61B

Abstract:
1. A bone fixation kit for stabilizing skeletal bone across a discontinuity comprising: a plate having a first end and a second end with an intermediate length to span a discontinuity and a width including at least one screw hole in each of said first end and said second end, said plate including a thickness with a first surface for contacting a bone and an opposite second surface, said plurality of screw holes extending through said thickness for accepting locking screws, said plurality of screw holes each having a first countersink defined by an enlarged depression in said second surface, each said depressions having a bottom wall between said first and said second surfaces, each said screw holes and each said depressions having a longitudinal axis; a plurality of locking screws with each locking screw having external threads, each locking screw being adapted to penetrate each of said plurality of screw holes, said locking screws each having an enlarged head adapted to engage said bottom wall of each said depression; and an attachment system having a plurality of tubular bone anchors each having a helical member wherein each of the helical members is a deformable helical coil, each of said deformable helical coils includes a first end and a second end with interior threads and exterior threads, the turns of the deformable coil define the external threads while the internal surface of some of the turns of the deformable coil define a plurality of roots of the internal threads, wherein each of said tubular bone anchors has a uniform outer diameter that allows threading through said plate and positioned into a hole located in said skeletal bone, said interior threads of said helical members frictionally engaging the external threads on each of said locking screws, wherein said locking screws are inserted through said plate and are threadably engaged with said helical members for use in expanding the outer diameter of the external thread of said helical member to stabilize the bone across the discontinuity.