Patent ID: 6482234
Filing Date: 2002-11-19
Classification: A61F

Abstract:
A prosthetic spinal disc, comprising:a biocompatible annulus comprising a first material density, wherein said biocompatible annulus comprises (i) a first outer portion, (ii) a second outer portion and (iii) at least one lip, wherein at least one of said (i), (ii) or (iii) are contoured to substantially correspond to a surface of a vertebrae prior to placement against said vertebra against which at least one of said (i), (ii) or (iii) will be located; and a nucleus within said biocompatible annulus, wherein said nucleus comprises a second material density, wherein an outer portion of said spinal disc comprises at least one pore to allow ingrowth of biological material, wherein said outer portion is selected from a group consisting of said first outer portion and said second outer portion, wherein said at least one pore comprises a plurality of pores formed at an angle with respect to said outer portion, wherein said plurality of pores are each formed at about 30 degrees in a spiral pattern.