Patent ID: 8205612

Claim:
A dry powder aerosol generator for fluidizing a powdered drug and comprising: (a) a dispersion chamber having at least one sidewall and a top and a bottom, the dispersion chamber having an inner surface that defines an internal cavity within the chamber and wherein the dispersion chamber prevents airflow communication between inside and outside of the dispersion chamber, the dispersion chamber also having at least one dosing port in the at least one sidewall, the at least one dosing port being in communication with the internal cavity; (b) a dosing chamber having a porthole end that is insertable in the at least one dosing port of the dispersion chamber, the dosing chamber defining an opening within the porthole end; (c) an impeller enclosed within the internal cavity of the dispersion chamber configured to create an airflow within the dispersion chamber to produce a standing cloud of powdered drug after introduction of the powdered drug into the dispersion chamber; and (d) a controller in operative communication with the impeller for controlling the rotation of the impeller.