Patent ID: 9421107
Filing Date: 2016-08-23
CPC Classification: A61F

Claim Text:
1. An intervertebral disc comprising: a superior endplate having an upper vertebra contacting surface and a lower bearing surface, wherein the upper vertebra contacting surface of the superior endplate has a domed central portion and wherein the lower bearing surface has a concavity disposed opposite the domed central portion; an inferior endplate having a lower vertebra contacting surface and an upper bearing surface, wherein the lower vertebra contacting surface of the inferior endplate has a domed central portion and wherein the upper bearing surface has a concavity disposed opposite the domed central portion; and a core positioned between the superior and inferior endplates, the core having upper and lower surfaces configured to mate with the lower bearing surface of the superior and the upper bearing surface of the inferior endplate, respectively; wherein the domed central portion of the upper vertebral contacting surface of the superior end plate has a height relative to a peripheral edge which is greater than a height of the domed central portion relative to a peripheral edge of the lower vertebral contacting surface of the inferior endplate to accommodate patient anatomy; and wherein the superior endplate comprises an upper keel extending upwardly from the top of the domed central portion, and the inferior endplate comprises a lower keel extending downwardly from the bottom of the domed central portion.