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METERING VALVE FOR A METERED DOSE INHALER PROVIDING CONSISTENT DELIVERY
METERING VALVE FOR A METERED DOSE INHALER PROVIDING CONSISTENT DELIVERY
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机译:计量吸入器的计量阀提供稳定的输送
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摘要
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 ° to about 90 °; 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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