Patent ID: 7083650
Filing Date: 2006-08-01
Classification: A61B,A61F,Y10S

Abstract:
1. A total artificial expansible disc for placement between two adjacent vertebral end plates, comprising: at least two pairs of substantially parallel shells, each pair is adapted to interface directly with only one of two adjacent vertebral endplates, each shell moves along at least two same substantially perpendicular axes increasing the space between each shell apart in order to fill a space between adjacent vertebral endplates; an expansion device having at least one jack mechanism coupled to the shells to actively move the shells apart along the at least two substantially perpendicular axes; and a core from the group consisting of at least a pair of directly cooperating elements having at least one element that includes a curved shape, a ball, an elastic element and a sheath filled with elastic material, said core being disposed between the pairs of shells and adapted to actively permit the vertebral endplates to move relative to one another.