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Vertically expanding intervertebral body fusion device

  • US 6,758,863 B2
  • Filed: 12/12/2002
  • Issued: 07/06/2004
  • Est. Priority Date: 10/25/2000
  • Status: Expired due to Term
First Claim
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1. An intervertebral spacer for implantation between opposing endplates of adjacent vertebrae, said spacer comprising a body formed from a biodegradable shape memory polymeric material and having an upper first surface, an opposite second surface and a peripheral sidewall extending therebetween, said body provided in a first configuration and capable of deforming under selected stimuli to an expanded second configuration, wherein the upper surface is provided to bear against a first end plate of a first vertebra while the lower surface is provided to bear against a opposing endplate of an adjacent vertebra.

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