Patent ID: 6328746
Filing Date: 2001-12-11
Classification: A61B,Y10S

Abstract:
Combination apparatus for improved bone fixation, comprising:improved bone fixation screws each having a head and thread, the improvement comprising:a split point tip adapted to prevent said screw from moving laterally during use; andtwo cutting flutes running substantially the entire length of said threads,wherein said screws are self-tapping; andtubular cartridges each having a hollow interior and each placeable around one of said screws, each cartridge having a proximal end and distal end, said proximal end being openable and adapted to accommodate a surgical screwdriver and said distal end being adapted to loosely retain one of said screws;each of said cartridges further comprising a first annular rim formed in said interior of said cartridge at said distal end of said cartridge, said annular rim adapted to receive and gently retain said head of said screw;each of said cartridges further comprising a second annular rim formed in said interior of said cartridge at said proximal end of said cartridge, said second annular rim adapted to rest against a screwdriver shaft inserted into said proximal end.