Patent ID: 8506636
Filing Date: 2013-08-13
Classification: A61F

Abstract:
1. A spinal implant for posterior or lateral placement between adjacent vertebrae, said implant comprising: a first dimension along a medial-lateral axis between a lateral end and a medial end of said implant; a second dimension along an anterior-posterior axis substantially orthogonal to said medial-lateral axis and less than said first dimension; a first bearing surface configured to abut a first vertebra; a second bearing surface configured to abut a second vertebra; a compound curve comprising a first radius in a first plane of curvature perpendicular to said anterior-posterior axis and a second radius in a second plane of curvature perpendicular to said medial-lateral axis, said second plane of curvature being orthogonal to said first plane of curvature and said compound curve defining at least one of said first bearing surface and said second bearing surface, said first radius in said first plane of curvature of said compound curve being longitudinally offset at a first non-zero distance along said medial-lateral axis from a longitudinal center axis of said implant; wherein said first radius is continuous from said lateral end to said medial end of said implant; a first cavity and a second cavity configured to extend through at least said first bearing surface and said second bearing surface; and an intermediate member interposed between said first cavity and said second cavity.