Metering valve for a metered dose inhaler providing...

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01) B65D 83/14 (2006.01)

Patent

CA 2496882

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.

L'invention concerne un nouveau modèle de valve de dosage qui améliore la stabilité du débit de la formulation. En règle générale, la valve de dosage comprend (a) une tige de valve qui définit globalement un axe longitudinal et qui comprend un corps à surface doseuse. L'axe en question et un plan tangent au moins à une partie de la surface doseuse définissent un angle compris entre environ 2· et environ 90·; et (b) un corps de valve à chambre interne définie au moins par la paroi du corps, qui comprend une partie doseuse à configuration sensiblement compatible avec la surface doseuse de la tige de valve.

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