Patent ID: 7594932
Filing Date: 2009-09-29
Classification: A61F

Abstract:
1. A device utilized in reconstruction and fusion of a human spine providing direct rigid fixation of an anterior spinal column in flexion, extension and rotation, the device comprising: a housing including a leading deep surface conforming to a posterior aspect of an intervertebral disk and a trailing outer surface conforming to an anterior surface of the intervertebral disk, weight bearing sides and top and bottom surfaces with a plurality of openings enabling ingrowths of bone; a shaft running from a center of the leading deep surface and perpendicular to the leading deep surface of the housing to the center of the trailing outer surface of the housing, the shaft being affixed at least to the leading deep surface of the housing; and a plurality of fixation members individually disposed on the shaft of the housing, the plurality of fixation members including at least one first fixation member having at least one extension in a first orientation about the axis of the shaft and at least one second fixation member having at least one extension in a second orientation about the axis of the shaft that is opposite to the first orientation, wherein upon rotation of each fixation member of the plurality of fixation members about the axis of the shaft in a direction in which the at least one extension of each fixation member is oriented, the at least one extension of each fixation member is configured to break an endplate of a vertebra, hook into the vertebra, and rigidly secure the vertebra to the device to prevent separation of the vertebra from the device during spinal motion.