Patent ID: 7722646
Filing Date: 2010-05-25
Classification: A61B

Abstract:
1. A spinal implant apparatus affixable to bone comprising: a coupling element including a first compression surface; a screw, the screw having a head with a curvate portion and a shaft extending from the curvate portion, wherein the head of the screw provides the first compression surface and the coupling element further includes a seat for receiving the head such that the shaft protrudes from the coupling element, wherein the seat is defined by a bore in the coupling element and further includes a socket defined by a curvate volume adjacent the bore, that corresponds to the curvate proximal portion such that the head nests in the socket and the shaft protrudes from the bore; and a locking element rotatably disposed in the coupling element and selectively rotatable through a plurality of positions including an unlocked position and a locked position, the locking element being rotatably disposed in the coupling element in each position of the plurality of positions such that,