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Biodegradable injectable drug delivery polymer

  • US 5,384,333 A
  • Filed: 03/17/1992
  • Issued: 01/24/1995
  • Est. Priority Date: 03/17/1992
  • Status: Expired due to Fees
First Claim
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1. A drug delivery composition for injection into a body, comprising a pharmaceutically active agent and biodegradable polymer which are physically mixed together, wherein the polymer comprises from 30 to 99.5% by weight of said drug delivery composition, is solid at a temperature in the range 20°

  • to 37°

    C. and flowable in the range of 38°

    to 52°

    C., and is a block co-polymer of formula;

    
    
    space="preserve" listing-type="equation">A--B--Awherein A is a hydrophobic polymer or oligomer and B is a hydrophilic polymer or oligomer.

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