Intervertebral Implant With Integrated Fixation

Abstract

A system for spinal surgery includes a prosthesis comprising a plurality of bone anchors which engage an intervertebral construct for fusion or motion preservation. The fusion construct comprises a spacer optionally encircled by a jacket. The motion preservation construct may comprise an articulating disc assembly or an elastomeric disc assembly. Any of the constructs may occupy the intervertebral disc space between adjacent vertebrae after removal of an intervertebral disc. The anchors slidingly engage the construct to securely fix the prosthesis to the vertebrae. The anchors and jacket of the fusion construct provide a continuous load path across opposite sides of the prosthesis so as to resist antagonistic motions of the spine.

1 . A system for spinal fusion, comprising:
 an intervertebral spacer sized and shaped to at least partially fill an intervertebral disc space between adjacent vertebrae after removal of at least a portion of an intervertebral disc;   a first anchor secured to the spacer, wherein the first anchor is sized and shaped to secure the spacer to the vertebrae so that the spacer and the vertebrae are substantially relatively immobilized against antagonistic spinal motions; and   a jacket secured around the spacer and secured to the first anchor for sustaining spinal loads across opposite sides of the spacer.