Patent ID: 6551322
Filing Date: 2003-04-22
Classification: A61B,A61F

Abstract:
An apparatus for implantation into a bone in a patient's spine or pelvis, said apparatus, when implanted, being resistant to toggling in the bone and to being pulled from the bone, said apparatus comprising:a platform having a first surface for facing a bone in a patient's spine or pelvis, said first surface being solid and extending generally transverse to a longitudinal axis of said apparatus, said platform including structure for connection to a spinal fixation implant; and at least one helical spike for embedding into the bone upon rotation of said platform, said at least one helical spike projecting tangentially from said first surface of said platform and extending around said longitudinal axis, said at least one helical spike having a proximal end and a distal end; said at least one helical spike including a tip portion at said distal end which penetrates into the bone as said platform is rotated, a connecting portion at said proximal end connected to said first surface of said platform, and an intermediate portion extending between said connecting portion and said tip portion.