Surgery – Liquid medicament atomizer or sprayer – Gas stream aspirating medicament from reservoir
Patent
1995-04-08
1995-12-12
Yan, Ren
Surgery
Liquid medicament atomizer or sprayer
Gas stream aspirating medicament from reservoir
12820312, 12820315, 12820418, 12820524, 12820525, A61M 1600
Patent
active
054740592
ABSTRACT:
An aerosol dispensing apparatus comprising a housing having a charging chamber which receives the medicated vapor under pressure from a mist generator positioned within a shaft which extends from the housing. The charging chamber is partially sealed by a blast valve which is attached to a movable bracket positioned within the housing and mounted on the shaft in slidable engagement with the shaft. There is also attached to the movable bracket a diaphragm which is positioned in a rear chamber of the housing adjacent the charging chamber. Medicated vapor from the charging chamber is supplied to the rear chamber exerting a force on the diaphragm. When the force exerted by the medicated vapors on the diaphragm exceeds a predetermined pressure level, the diaphragm moves the shaft unseating the blast valve which allows the pressurized medicated vapor to enter a wave shaping chamber within the housing. A pair of annular ports at the front end of the housing receive the medicated vapor from the wave shaping chamber and, in combination, with the wave shaping chamber form the train of ring vortices of medicated vapor. The train of ring vortices of medicated vapor is directed to a mask which covers a patient's mouth and nose allowing the patient to inhale the train of ring vortices of medicated vapor.
REFERENCES:
patent: 2788607 (1957-04-01), Ward
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patent: 4225795 (1980-10-01), Babington
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patent: 4880147 (1989-11-01), Tolan
patent: 5025806 (1991-06-01), Palmer et al.
patent: 5100242 (1992-03-01), Latto
patent: 5415246 (1995-05-01), Cooper
Raciti Eric P.
Yan Ren
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