Patent ID: 8491653
Filing Date: 2013-07-23
Classification: A61B,A61F

Abstract:
1. An intervertebral spinal fusion implant comprising: a D-shaped body including a peripheral wall that encloses an inner cavity, said peripheral wall having a D-shaped cross-section and including a curved anterior end and an opposite posterior end with an anterior-posterior axis drawn from said curved anterior end to said posterior end, said body having superior and inferior sides with said superior side adapted to engage an upper vertebral body and said inferior side adapted to engage a lower vertebral body, said superior and inferior sides each including an opening communicating with said inner cavity, said peripheral wall defining apertures located on opposite sides of the peripheral wall substantially parallel to said anterior-posterior axis, said apertures communicating with said inner cavity to place said inner cavity in communication with an exterior of said body; a rib extending across said inner cavity and including a first end joined to said peripheral wall adjacent said curved anterior end and a second end joined to said peripheral wall adjacent said posterior end; and a first keel extending from said rib in a superior direction, a second keel extending from said rib in an inferior direction, and wherein each of said keels extends along a longitudinal axis substantially parallel to said anterior-posterior axis and at least one of said keels has a maximum width that is greater than a minimum width of said rib.