Method of and a device for dry application of substances on inhalable pulverulent carrier substances

US6343602B1 · kind B1 · utility

Assignee

• GSF Forshungszentrum fur Umwelt und Ges · DE

Inventors

• Gerhard Scheuch · Kirchberg, DE
• Knut Sommerer · Hersbruck, DE

Key dates

• Filing date: Apr 13, 2000
• Grant date: Feb 5, 2002
• Expiry date: Apr 13, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K51/1206
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

For maintaining the inhalable pulverulent carrier substances and their properties when marker substances and/or active substances are applied, initially the substance to be applied is dissolved in a liquid, then the fluid is vaporized and finally the aerosol droplets are dried for forming aerosol particles whereupon the aerosol particles are whirled for being contacted with the pulverulent substance. The associated device comprises an aerosol generator 11 including on the nozzle-type, ultrasonic or other vaporizer for the substance to be applied, which is dissolved in a liquid, and a drying means for drying the aerosol particles so formed. Moreover, a mixing chamber 12 is provided for receiving pulverulent carrier substance and for establishing a whirling contact thereof with dry aerosol particles circulated and introduced therein.