Metering valve for a metered dose inhaler providing...

Details Metering valve for a metered dose inhaler providing... Metering valve for a metered dose inhaler providing...

A - Human Necessities

61

M

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

Patent

CA 2497646

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 une conception destinée à une soupape de dosage présentant une constance améliorée de distribution de formulation. De manière générale, la soupape de dosage comprend (a) une tige de soupape définissant généralement un axe longitudinal et comprenant une partie corps qui comporte une surface de dosage, l'axe longitudinal et un plan tangentiel à au moins une partie de la surface de dosage définissant un angle d'environ 2· à environ 90·; et (b) un corps de soupape possédant une chambre interne définie au moins en partie par la paroi de corps et comprenant une partie de dosage conçue de manière à sensiblement se conformer à la surface de dosage de la tige de soupape.

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