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Spinal Disc Prosthesis Apparatus and Placement Method

  • US 20110077654A1
  • Filed: 12/03/2010
  • Published: 03/31/2011
  • Est. Priority Date: 07/27/2004
  • Status: Abandoned Application
First Claim
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1. A router for forming additional spaces within the interiors of adjacent spinal vertebrae that intersect an enlarged partially circular space formed from the back and to one side of a space between the adjacent vertebrae that was previously occupied by a degenerated disc, said router comprising:

  • an enlarged cylindrical portion of a size sufficient to form said additional spaces and having a diameter equal to or slightly less than the diameter of said enlarged partially circular space, said enlarged cylindrical portion including a flat upper surface, a flat lower surface and a cylindrical body connecting said upper surface to said lower surface, said cylindrical body including a plurality of sharp cutting points on the outside surface thereof for forming said additional spaces; and

    a cylindrical shaft extending outwardly from said upper surface of said enlarged cylindrical portion, said shaft having a diameter substantially less than the diameter of said enlarged cylindrical portion.

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