Patent ID: 9439775
Filing Date: 2016-09-13
CPC Classification: A61F

Claim Text:
1. An intervertebral disc comprising: an upper plate having an upper vertebra contacting surface and a lower bearing surface, wherein the upper surface of the upper plate has a convex central portion and at least one anchoring element extending from an upper surface of the convex central portion, and wherein the lower bearing surface has a concavity disposed opposite the convex central portion and wherein the convex central portion and the concavity have matching curvatures; a lower plate having a lower vertebra contacting surface and an upper surface; and, wherein the lower surface of the lower plate has a convex central portion, and wherein the upper bearing surface has a concavity disposed opposite the convex central portion and wherein the convex central portion and the concavity have matching curvatures; a core positioned between the upper and lower plates, the core having upper and lower convex surfaces configured to mate with the bearing surfaces of the upper and lower plates, and a plurality of teeth provided on the upper surface of the upper plate and the lower surface of the lower plate wherein the teeth having a posterior facing surface formed at an angle of less than 40 degrees with respect to the vertebra contacting surfaces and an anterior facing surface formed at an angle of more than 50 degrees with respect to the vertebra contacting surfaces.