Patent ID: 7655044
Filing Date: 2010-02-02
Classification: A61B,A61F

Abstract:
1. A prosthetic facet joint device comprising: a) a first component adapted for fixation to a first vertebra comprising: b) a second component adapted for fixation to a second vertebra comprising: wherein the first side of the first component opposes the first side of the second component at a first location to form a first interface, and wherein the second side of the first component opposes the second side of the second component at a second location to form a second interface, wherein the second side of the first component opposes the second side of the second component at a third location to form a third interface, and c) a first compression resistance means associated with the first interface, and d) a second compression resistance means associated with the second interface, and e) a third compression resistance means associated with the third interface, wherein the lateral arms of the first component form a concave profile having a first radius, wherein the central region of the first component forms a concave profile having a second radius, wherein the second radius is smaller than the first radius, wherein the central region has a general U-shape having an apex, and wherein central region further comprises an extension extending laterally from the apex.