Patent ID: 8388657

Claim:
A prosthetic device for implantation between adjacent vertebral bodies in a vertebral column, the prosthetic device comprising: a body comprising a central support portion having top, bottom, front and back surfaces, the central support portion extending laterally along a lateral axis between first and second end portions, the first end portion extending longitudinally along a first longitudinal axis and the second end portion extending longitudinally along a second longitudinal axis, and the first and second longitudinal axes are generally perpendicular to the lateral axis, wherein at least a portion of first and second end portions protrude beyond the top and bottom surfaces of the support portion in the cranial-caudal direction, protrude beyond the front and the back surfaces of the support portion in the anterior-posterior direction to further distract at least a portion of the adjacent vertebral bodies of the vertebral column, and wherein the central support portion has first and second concave portions extending from the first end portion to the second end portion on the upper and lower surfaces for supporting the adjacent vertebral bodies and third and fourth concave portions extending from the first end portion to the second end portion on the front and back surfaces for supporting and centering the adjacent vertebral bodies on the central support portion, wherein the second end portion comprises a plate having a uniform thickness and an opening to engage an insertion tool, the opening extending from the second end portion through the central support portion and the first end portion, wherein the second end portion comprises an anterior cutout to accommodate lamina in an implanted position, and wherein the first and second end portions further comprise multiple grooves extending laterally along a portion of the front and back surface of the first and second end portions for preventing movement in any non-parallel direction with respect to spinous processes.