Patent ID: 7195643
Filing Date: 2007-03-27
Classification: A61B,A61F

Abstract:
1. A biologically inactive non-metal spinal fusion interbody spacer comprising: (a) an anterior end surface and an opposite posterior end surface spaced from said anterior end surface; (b) a superior abutment surface and an opposite inferior abutment surface spaced from said superior abutment surface, said superior and inferior abutment surfaces extending respectively between said anterior and posterior end surfaces; (c) a center reference plane positioned substantially equidistant between said anterior and posterior end surfaces and intersecting said superior and inferior abutment surfaces; (d) each of said abutment surfaces being effectively convex and having a respective peak of convexity located at a position spaced substantially anterior of said center reference plane; (e) at least one of said abutment surfaces is formed by a plurality of substantially planar facets; and (f) said spacer being formed from a non-metallic material which is biologically inactive.