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Hard tissue prosthesis including porous thin metal sheets

  • US 5,496,372 A
  • Filed: 12/01/1993
  • Issued: 03/05/1996
  • Est. Priority Date: 04/17/1992
  • Status: Expired due to Term
First Claim
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1. A prosthesis for the replacement of hard tissues of human bones and joints comprising a porous lamination component of metal thin sheets, each having a plurality of through holes and a thickness along a first dimension of 150 μ

  • m or less, and being unharmful to the living body, said porous lamination component being formed such that said thin sheets are laid over one another and then diffusion-bonded therebetween into one body by heating so that said through holes communicate with one another in the direction of the first dimension, wherein a single hole formed in at least one of a pair of said thin sheets being vertically adjacent to each other communicates with a plurality of holes formed in the other of the pair in the plan view direction of said thin sheets;

    said single hole is larger than said plurality of holes of said pair of said thin sheets such that said single hole encloses said plurality of holes of said pair of said thin sheets.

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