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Artificial facet joint

  • US 5,571,191 A
  • Filed: 03/16/1995
  • Issued: 11/05/1996
  • Est. Priority Date: 03/16/1995
  • Status: Expired due to Term
First Claim
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1. A prosthetic device for implantation over a painful or otherwise damaged inferior articular process or a superior articular process, or both, of a human spinal facet joint, comprising,a superior component roughly in the form of a hollow cone or pyramid with a rounded apex substantially conforming to the size and shape of the distal tip of the inferior articular process so as to be a substantially matching fit over it;

  • an inferior component roughly in the form of a hollow cone or pyramid substantially conforming to the size and shape of the distal tip of the inferior articular process so as to be a substantially matching fit over it;

    means for affixing said superior component to said distal tip of the inferior articular process;

    means for affixing said inferior component to said distal tip of the superior articular process.

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