Patent ID: 8070816
Filing Date: 2011-12-06
Classification: A61F

Abstract:
1. An arthroplasty prosthesis, comprising: first and second support members configured for cooperatively supporting opposing articulated bones, the first support member having a first at anterior-posterior and lateral pivotal axis, and the second support member having a second anterior-posterior and lateral pivotal axis; and first and second articulation portions, the first articulation portion having a first pivotal joint member in pivotal association with the first support member for pivoting at the first pivotal axis, and the second articulation portion having a second pivotal joint member in pivotal association with the second support member for pivoting at the second pivotal axis, wherein the first and second articulation portions are in sliding contact with each other between the first and second pivotal joint members to permit translation of the first and second support members and pivotal joint members with respect to each other, wherein the prosthesis is configured such that, when implanted in the spinal column, the articulation portions are disposed in a location corresponding to an intervertebral disk; wherein the first and second articulation portions comprise blocking members juxtaposed radially with respect to a spinal axes that extends axially between the support members for abutting each other to limit the translational movement therebetween, and the blocking members comprise: