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Tissue treatment

  • US 7,611,542 B2
  • Filed: 11/01/2006
  • Issued: 11/03/2009
  • Est. Priority Date: 03/29/2002
  • Status: Expired due to Fees
First Claim
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1. A method of treating tissue, the method comprising:

  • placing substantially spherical polymer particles in the tissue, the particles having an interior region comprising pores having a predominant pore size in the range of about 20 to 35 microns, a first region substantially surrounding the interior region comprising pores having a predominant pore size in the range of about 2 to 18 microns, and a third region surrounding the second region comprising pores having a predominant pore size of about 2 microns or less,wherein the polymer comprises crosslinked polyvinyl alcohol.

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