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Dry powder delivery system apparatus

  • US 6,237,590 B1
  • Filed: 09/18/1997
  • Issued: 05/29/2001
  • Est. Priority Date: 09/18/1997
  • Status: Expired due to Fees
First Claim
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1. A powder delivery system comprising:

  • a body having an internal cavity and an outlet port for delivering a powder into an aerosol form;

    a substrate with one or more aliquots of powder, each aliquot at an aliquot location on the substrate, each aliquot sealed under an individually releasable cover; and

    an electrical release element for electrically releasing each releasable cover, the substrate having electrical conductors for selectively applying voltage to the electrical release element to thereby selectively release the corresponding cover.

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