Metering valve for a metered dose inhaler providing consistent delivery
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United States of America Patent
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Jun 26, 2007
Grant Date -
Jul 22, 2004
app pub date -
Sep 4, 2003
filing date -
Sep 6, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a novel design for a metering valve that provides improved consistency of formulation delivery. Generally, the metering valve includes (a) a valve stem that generally defines a longitudinal axis and includes a body portion having a metering surface, wherein the longitudinal axis and a plane tangential to at least a portion of the metering surface define an angle from about 2.degree. to about 90.degree.; and (b) a valve body having an internal chamber defined at least in part by the body wall and includes a metering portion configured to substantially conform to the metering surface of the valve stem.
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