Metered dose inhalation unit with slide means
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United States of America Patent
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-
Feb 4, 1997
Grant Date -
N/A
app pub date -
May 26, 1995
filing date -
May 26, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A spray-entrapped product such as dispensed by an MDI device includes an elongated passageway having a mouthpiece portion and a main chamber portion. The MDI device is mounted to direct a medication spray into the main chamber. A first air inlet allows a low-level inspiratory breath to be developed through the unit prior to operation of the MDI device. When the MDI device is operated a second, air inlet is opened, allowing a higher-level breath to be developed, which causes a high level of mixing with the MDI spray for efficient draws into the lungs. The second air inlet remains open after MDI operation ceases, insuring that a complete, high flow rate breath can be made to fully sweep the medication out of the chamber.
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