Dosage inhalator providing optimized compound inhalation traject

Details Dosage inhalator providing optimized compound inhalation traject Dosage inhalator providing optimized compound inhalation traject

1992-08-26

1993-08-31

Burr, Edgar S.

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

12820323, 12820324, A61M 1500

Patent

active

052399931

ABSTRACT:
A breath actuated dry powder medicament inhalator has a primary air passageway therethrough defining a venturi in the medial portion thereof. A secondary air passageway is provided which includes a compound deaggregating swirl chamber and is fluidly connected to the venturi of the primary air passageway. A dry powder compound storage chamber and cooperatively associated metering plate act to introduce a predetermined amount of compound into the swirl chamber upon actuation of the metering plate. The primary air passageway is configured within the inhalator apparatus so as to create an optimized air flow trajectory through the mouth of the user to minimize dry powder compound impingement upon the outside radius of the throat.

REFERENCES:
patent: 263451 (1882-08-01), Adams
patent: 2573918 (1951-11-01), McCuiston
patent: 2587215 (1952-02-01), Priestly
patent: 2633131 (1953-03-01), Grosvenor
patent: 4240418 (1980-12-01), Rosskamp et al.
patent: 4452239 (1984-06-01), Malem
patent: 5161524 (1992-11-01), Evans
"The Fluid Mechanics of Cromolyn Sodium Inhalers Used for Asthma Prevention" Eugene Niemi, Jr, Proceedings of 7th New England Bioengineering Conference, Troy, NY, 22-23 Mar. 1979.

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