Patent ID: 9173748
Filing Date: 2015-11-03
Classification: A61F

Abstract:
1. An intervertebral implant comprising: a first component having a first articulating surface, the first articulating surface being generally convex; and a second component being generally in the shape of a toroid and having a second articulating surface, the second articulating surface being generally concave and articulable with the first articulating surface for retaining motion between a first vertebra and a second vertebra; wherein the second articulating surface has a larger radius of curvature than the first articulating surface such that a portion of the first articulating surface extends into an aperture defined by the generally toroid shape, the aperture extending into the second articulating surface and a portion of the first articulating surface abutting the second articulating surface at a location defining a perimeter of the aperture; and wherein the first component is a single component, the first component and the second component define a first vertebral engaging surface and a second vertebral engaging surface, respectively, and the first vertebral engaging surface and the second vertebral engaging surface each include a plurality of protrusions.