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Drug delivery systems based on hyaluronans derivatives thereof and their salts and methods of producing same

  • US 5,128,326 A
  • Filed: 07/23/1990
  • Issued: 07/07/1992
  • Est. Priority Date: 12/06/1984
  • Status: Expired due to Term
First Claim
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1. A drug delivery system comprising a polymeric component which is an insoluble hyaluronan or a soluble hylan and a selected amount of at least one substance having biological or pharmacological activity and which is controllably releasable from said system so as to effect delivery of a therapeutically effective amount of said substance to a desired site.

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