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Intervertebral disc prosthesis with liquid chamber

  • US 6,395,032 B1
  • Filed: 06/07/2001
  • Issued: 05/28/2002
  • Est. Priority Date: 12/11/1998
  • Status: Expired due to Term
First Claim
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1. An intervertebral disc prosthesis comprising:

  • two opposing plates;

    a flexible seal extending between said two plates for forming a closed chamber between said two plates;

    a liquid provided in said chamber; and

    a body disposed in said chamber and in said liquid, said body having a plurality of pores at an outer surface thereof and cavities extending from said pores into said body, wherein said liquid and said body are selected from materials so that said liquid does not normally wet to said cavities and compressive energy must be applied to said liquid for forcing said liquid into said cavities.

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