Patent ID: 8894709
Filing Date: 2014-11-25
Classification: A61B,A61F

Abstract:
1. An intervertebral disc prosthesis, comprising: a first end plate securable to a first vertebral body; a second end plate securable to a second vertebral body; and a nucleus having an inferior side and a superior side, the nucleus having a superior articulating surface on the superior side and an inferior articulating surface on the inferior side, the superior articulating surface having a first articulating portion between a second articulating portion and a third articulating portion, wherein the first articulating portion includes a first planar surface which directly engages one of the first and second end plates, wherein the first, second and third articulating portions are separated from each other, the inferior articulating surface having a fourth articulating portion between a fifth articulating portion and sixth articulating portion, wherein the fourth articulating portion includes a planar surface, wherein the fourth, fifth, and sixth articulating portions are separated from each other, and wherein the fourth articulating portion of the inferior articulating surface is between two curved sections of the inferior articulating surface.