Dispensing apparatus

Details Dispensing apparatus Dispensing apparatus

1991-09-17

1993-02-09

Huson, Gregory L.

Dispensing

With discharge assistant

Fluid pressure

222182, 222183, 222162, 12820023, 239350, 604140, B65D 8300

Patent

active

051847612

ABSTRACT:
An inhaler for medical aerosols includes a flow sensor 32 in the form of a piston which is movable against a spring bias 35 in response to inhalation. Movement of the piston unseats a valve member 30 allowing a pressurized dose to be released through a nozzle 67. A uniform impedance to the flow of air is provided throughout the movement of the piston to avoid any discontinuity in the flow. The apparatus is particularly suited for inhalers used in the treatment of asthma.

REFERENCES:
patent: 3157179 (1964-11-01), Paullus et al.
patent: 3605738 (1971-09-01), Ciranna
patent: 3826413 (1974-09-01), Warren
patent: 4576157 (1986-03-01), Raghuprasad
patent: 4955371 (1990-09-01), Zamba et al.
patent: 4969578 (1990-11-01), Gander et al.
patent: 5037012 (1991-08-01), Langford
patent: 5082149 (1992-01-01), Cross

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