Patent ID: 9011544
Filing Date: 2015-04-21
Classification: A61F,A61L,C08L

Abstract:
1. A method for relieving back pain with an intervertebral disc comprising: implanting an upper plate comprising a body having an upper vertebra contacting surface and a lower bearing surface and a metal screen covering the upper vertebra contacting surface, wherein the body of the upper plate consists of polyaryletherketone (PAEK) and the metal screen is attached to the upper surface of the plate by insert molding, peripheral locking features, or adhesives and the metal screen provides improved bone attachment; implanting a lower plate comprising a body having a lower vertebra contacting surface and an upper bearing surface and a metal screen covering the lower vertebra contacting surface, wherein the body of the lower plate is formed of PAEK and the metal screen is attached to the upper surface of the plate by insert molding, peripheral locking features, or adhesives and the metal screen provides improved bone attachment; and positioning a ceramic core between the upper and lower plates with the ceramic core having upper and lower bearing surfaces in contact with the PAEK of the upper and lower plates; and allowing the upper and lower plates to articulate with respect to one another and with respect to the core.