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Implantable joint prosthesis

  • US 20020128715A1
  • Filed: 08/08/2001
  • Published: 09/12/2002
  • Est. Priority Date: 08/08/2000
  • Status: Active Grant
First Claim
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1. A surgical implant suitable for use in a joint between the surfaces of two bones, comprising:

  • two rigid opposing shells, each having an outer surface adapted to engage the surfaces of the bones of a joint in such a way that movement of the shell relative to the bone surface is resisted by friction between the outer surface and the surface of the bone;

    an inner surface that is smoother than the outer surface; and

    an edge between the outer surface and the inner surface;

    a deformable, resilient central body disposed between the inner surfaces of the shells comprising an outer surface, at least a portion of which has a shape that complements and articulates with the shape of the inner surface of one or both rigid opposing shells to allow the inner surface of the rigid opposing shell and the outer surface of the central body to move easily with respect to each other within a constrained range of motion, but to resist such movement outside the constrained range of motion.

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