Patent ID: 6792940
Filing Date: 2004-09-21
Classification: A61M,B01F,B01J,B05B,B82Y,C40B,F02M,F23D,G01N

Abstract:
The method of delivering an aerosol to the patient, comprising:feeding a pharmaceutically active drug through a cylindrical channel of a feeding source in a manner which causes the liquid to be expelled from an exit opening as a liquid stream wherein the exit opening has a diameter in a range of from about 0.002 mm to about 2 mm; forcing a gas through a pressure chamber in a manner which causes the gas to exit the pressure chamber from an exit orifice having a diameter in a range of about 0.005 mm to about 0.25 mm, the gas exiting downstream of a flow path of the liquid stream expelled from the exit opening of the feeding source; wherein the exit opening of the feeding source is separated by a distance of from about 0.002 mm to about 2mm from the feeding point; wherein the liquid stream is accelerated and stabilized by tangential viscous stress exerted by the gas on the stream and a stable liquid-gas interface is maintained and the liquid forms a stable jet focused on a the exit orifice of the pressure chamber by the gas.