Method for releasing controlled amount of aerosol medication
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United States of America Patent
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-
Apr 28, 1998
Issued Date -
N/A
app pub date -
Nov 27, 1996
filing date -
Mar 5, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for releasing a controlled amount of aerosol medication is disclosed. The method of the invention is preferably used in connection with a portable, battery-powered, hand-held system for releasing a controlled dose of aerosol medication for inhalation by a patient. The inhalation breath flow of the user of the apparatus is monitored and the inhalation flow rate is measured, and inhalation volume is determined as a function of the measured flow rate. The measured flow rate is compared to predetermined minimum and maximum flow rate thresholds, and the determined flow volume is compared to predetermined minimum and maximum flow volume thresholds. When both the measured flow rate and the measured flow volume are between their respective the minimum and maximum thresholds, a signal is provided to release a controlled amount of aerosol.
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