Nebulization system

Details Nebulization system Nebulization system

1976-06-11

1978-06-13

Michell, Robert W.

Surgery

Truss

Pad

128DIG2, A61M 1100

Patent

active

040943178

ABSTRACT:
A nebulization chamber, designed specifically for radioaerosols, for reducing mean particle size, increasing aerosol concentration, and minimizing dead space. Centrally and vertically disposed is a substantially cylindrical interaction chamber at the lower most portion of which is positioned a membrane-covered opening that serves as the liquid interface to a conventional ultrasonic nebulizer located thereunder. Positioned concentrically within the interaction chamber is an impaction sphere which acts to trap the nebulized aerosol bolus in a small, compact volume for efficient delivery to the patient. Larger aerosol particles are also impacted on the sphere to permit recovery thereof for re-nebulization. The upper end of the interaction chamber communicates with the patient's mouthpiece via a one-way valve. Positioned laterally and downstream of the interaction chamber is a valved air inlet which acts to assist movement of the aerosol bolus during initial inspiration by the patient, thereby improving delivery efficiency and minimizing dead space. An injection inlet conduit may also be provided laterally of the interaction chamber to permit measured quantities of the desired fluid to be administered.

REFERENCES:
patent: 2738172 (1956-03-01), Spiess, Jr. et al.
patent: 3387607 (1968-06-01), Gauthier et al.
patent: 3404843 (1968-10-01), Szekely
patent: 3490697 (1970-01-01), Best, Jr.
patent: 3556097 (1971-01-01), Wallace
patent: 3561444 (1971-02-01), Boucher
patent: 3842833 (1974-10-01), Ogle
patent: 3861386 (1975-01-01), Harris et al.
patent: 3949743 (1976-04-01), Shanbrom

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