| http://www.w3.org/ns/prov#value | - The spinal disc device as recited in claim 12, wherein one or more of said biocompatible materials is formed of a material selected from the group consisting of hydrophilic polymers, hydrogels, homopolymer hydrogels, copolymer hydrogels, multi-polymer hydrogels, or interpenetrating hydrogels, acrylonitrile, acrylic acid, acrylimide, acrylimidine, including but not limited to PVA, PVP, PHEMA, PNVP,
|
