Patent ID: 6610089
Filing Date: 2003-08-26
Classification: A61B,A61F

Abstract:
An implant for insertion between a first vertebra and a second vertebra, the first vertebra having a first cortical bone endplate and the second vertebra having a second cortical bone endplate, wherein the implant comprises:a first terminal part defining a first bearing surface substantially planar and adapted to bear against the first cortical bone endplate and an opposite second bearing surface substantially planar and adapted to bear against the second cortical bone endplate; a second terminal part opposite said first terminal part, said second terminal part defining a third bearing surface adapted to bear against the first cortical bone endplate, a fourth bearing surface adapted to bear against the second cortical bone endplate, and an insertion face extending arcuately from the third bearing surface to the fourth bearing surface, said third bearing surface and said fourth bearing surface include an anti-expulsion feature; and an elongated body including a central portion extending from said first terminal part to said second terminal part, said body defining a longitudinal axis and having an upper bearing surface and a lower bearing surface, wherein the upper bearing surface and the second lower bearing surface are arcuate along the longitudinal axis.