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Intervertebral disc nucleus implants and methods

  • US 7,520,900 B2
  • Filed: 07/11/2005
  • Issued: 04/21/2009
  • Est. Priority Date: 08/30/2000
  • Status: Expired due to Fees
First Claim
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1. An intervertebral disc nucleus pulposus implant, comprising:

  • a load bearing elastic body having shape memory and sized for placement into an intervertebral disc space, said body having a first end, a second end, and a central portion located between the first and second ends;

    wherein said shape memory biases said body to a first configuration in which said first end and said second end are folded into contact with the central portion, wherein the first end in contact with the central portion forms a first aperture and the second end in contact with the central portion forms a second aperture;

    said elastic body configurable into a second, straightened configuration for insertion through an opening in an intervertebral disc annulus fibrosis;

    wherein said shape memory is effective for returning said body to said first configuration after said insertion.

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