Patent ID: 6695845
Filing Date: 2004-02-24
Classification: A61B,Y10S

Abstract:
A nonmetallic stabilizing plate system, for the purpose of fixing one bone segment with respect to one or more other bone segments within a bone column said system comprising:(a) a nonmetallic plate member having a posterior side for fixation to individual bone segments, said plate having a plurality of attachment holes for receiving nonmetallic bone screws; (b) a plurality of nonmetallic bone screws configured to engage said nonmetallic plate, and to engage the bone segments, for the purpose of retaining said plate to said bone segments, and (c) said bone screws having a threaded portion, an interference fit portion and a head portion, the interference fit portion having at least one plate contacting surface, and the plate having at least one screw contacting surface, wherein the interference fit portion is configured and sized such that when the screw is tightened, the at least one plate contacting surface of the interference fit portion is affixed to the plate by an interference fit, wherein the interference fit produces a substantially uniform shear stress at the plate and the bone screw contacting surface.