Patent ID: 8146587

Claim:
A method of treating neoplasms of the nasal cavity, comprising: (a) providing fluid in a canister, wherein the canister includes a reservoir and at least two air exit ports and an insert, said insert comprising a base that fits within the canister; and wherein said fluid contains corticosteroids; (b) mating said air exit ports to corresponding fluid channels, wherein the fluid channels comprise two tubes ending in a common bell housing above the base of the insert and wherein the fluid channels are larger in diameter than the air exit ports, thereby providing a space between the outer surface of the air exit ports and the inner surface of the fluid channels that allows fluid from said reservoir to be drawn upward between the air exit ports and fluid channels; and (c) pumping pressurized air through said air exit ports, thereby creating a venturi effect that draws fluid from said reservoir upward between the air exit ports and fluid channels and expels the fluid as a mist in an aerosol plume through exit holes in the fluid channels and into a user's nasal cavity above the inferior nasal turbinate independent of the user's breathing, said mist comprising a particle size of up to 100 microns and covering the whole nasal cavity within one minute; wherein said pressurized air has a pressure of 0.069-1.035 bar and an airflow rate of 1-12 liters per minute, producing a fluid delivery rate of 10-20 ml per minute.