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Spinal disc prostheses

  • US 8,623,090 B2
  • Filed: 04/18/2008
  • Issued: 01/07/2014
  • Est. Priority Date: 04/18/2007
  • Status: Active Grant
First Claim
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1. A spinal disc prosthesis comprising:

  • a first end disk having a ring and a plurality of rods, the ring having an upper surface, a lower surface, and an inner surface defining an elliptical opening, the plurality of rods extending between and connecting sides of the inner surface of the ring;

    a second end disk having a ring and a plurality of rods, the ring having an upper surface, a lower surface, and an inner surface, the plurality of rods extending between and connecting sides of the inner surface of the ring; and

    a flexible core connected to and extending between the first disk and second end disk, the flexible core formed by a plurality of flexible strands extending between and coupling the ring of the first disk and the ring of the second disk;

    wherein the plurality of resilient strands exclusively provide the translation, extension, flexion, and axial support for the first end disk and the second end disk.

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