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Drug delivery device and method for employing the same

  • US 5,788,959 A
  • Filed: 04/24/1995
  • Issued: 08/04/1998
  • Est. Priority Date: 04/24/1995
  • Status: Expired due to Fees
First Claim
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1. A drug delivery device comprising a single phase matrix solution of a negatively-charged water-soluble polymer and a positively-charged water-soluble polymer, wherein said matrix solution has dispersed therein a pharmaceutically active ingredient which is different from said negatively-charged water-soluble polymer and said positively-charged water-soluble polymer.

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