Patent ID: 8597354
Filing Date: 2013-12-03
Classification: A61F

Abstract:
1. An implant for installation between two adjacent spinal vertebrae, the implant comprising: a body extending along a body axis, fittable between the adjacent vertebrae, having a pair of ends, and adapted to be fitted with its ends axially juxtaposed with respective confronting faces of the two adjacent vertebrae, the body having at one of the ends a radially outwardly directed convex outer surface; an inner ring pivotal on the one end of the body about a first axis extending transversely of the body axis through the body, the inner ring having a radially inwardly directed concave inner surface riding on the outwardly convex surface of the one end of the body; and an outer ring pivotal on the inner ring about a second axis extending nonparallel to the first axis transversely of the body axis through the inner ring and body, the outer ring having an end face adapted to engage the respective vertebral face, the outer ring being pivotal on the inner ring and the inner ring being pivotal on the body for force-transmission between the outer ring and the body through the inner body.