Inhaler
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United States of America Patent
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-
Oct 30, 2012
Grant Date -
Jan 22, 2009
app pub date -
Jul 3, 2008
filing date -
Jul 20, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An object of the present invention is to enhance the inhalation efficiency by causing liquid droplets to be borne on an air flow in an early stage of inhalation in an inhaler. According to one embodiment, from an operation in which the user lets out a breath before the start of inhalation (that is, from exhalation), a positive pressure B produced by the exhalation is detected by a pressure detecting unit, and is compared with a standard pattern stored in a storage unit, and in this way the exhalation profile of the user is prepared. A time difference t between the exhalation finish time and the start time of the next inhalation is estimated, followed by the determination of the ejection start time T1 based on these pieces of information.
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