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Urethane bioimplant membrane

  • US 4,127,124 A
  • Filed: 05/12/1977
  • Issued: 11/28/1978
  • Est. Priority Date: 05/12/1977
  • Status: Expired due to Term
First Claim
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1. A method of implanting an unfoamed microporous hydrophilic bioimplant membrane within the living tissue in a mammal comprising the steps of producing a substantially unfoamed microporous hydrophilic bioimplant membrane by reacting a first component comprising isocyanate end-capped polyol chosen from the group consisting of polyetherol, polyesterol and mixtures thereof and having a reaction functionality of at least two with a second component comprising a C2 to C6 diol in an isocyanate monomer to diol molar ratio of 1 to 3.5 in a non-aqueous solvent reaction medium at a total solids concentration of less than 25%, volatilizing the solvent at a rate not causing the reaction product to foam whereby said unfoamed microporous hydrophilic bioimplant membrane is produced and placing the membrane so produced within the living tissue of a mammal.

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