Interbody prosthetic device with compound-arc, blade anchor

摘要

An intervertebral implant includes a body and a plate. The body has an upper surface defining an upper plane and a lower surface defining a lower plane. First and second fastener holes of the plate are configured to retain the heads of first and second fasteners. A portion of each of the shanks of the first and second fasteners extends from the first and second fastener holes beyond the upper plane. The shank portions of the first and second fasteners are curved in a direction away from the upper surface. The third fastener hole is configured to retain the head of the third fastener between the upper and lower planes. A portion of the shank of the third fastener extends from the third fastener hole beyond the lower plane. The shank portion of the third fastener is curved in a direction away from the lower surface.

主权项

1. An implant comprising an insert, a plate, and a fastener cooperatively sized and shaped to fit fixedly between a first bone and a second bone to be mechanically joined to encourage growing together to become a single bone, the fastener comprising:
a head portion having a central axis and a head cross section perpendicular to the central axis; a shank portion, transitioning from the head cross section at a proximal end, proximate the head portion, to a spline cross section having splines extending radially away from the central axis and axially along the central axis to a distal end opposite the head portion; wherein the splines are arranged helically on the shank portion.