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Method and apparatus for dispersion of dry powder medicaments

  • US 5,785,049 A
  • Filed: 09/21/1994
  • Issued: 07/28/1998
  • Est. Priority Date: 09/21/1994
  • Status: Expired due to Term
First Claim
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1. A method for aerosolizing a powder contained in a receptacle having an access surface, said method comprisingcoupling a powder inlet end of a feed tube having a central axis with a penetration in the access surface;

  • andflowing a high pressure gas stream past a portion of the feed tube that is spaced apart from the inlet and the gas stream converging with the portion at an acute angle as measured between the gas stream and the central axis at the inlet end, so that a predetermined amount of powder in the receptacle is fluidized, drawn axially through the tube, and dispersed in the high velocity gas stream to form an aerosol.

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