CARBON DIOXIDE BASED METERED DOSE INHALER

Various embodiments of a metered dose inhaler that includes a metering valve are disclosed. The inhaler includes a reservoir containing a pressurized formulation of medicament and carbon dioxide. The metering valve includes a metering chamber, a metering valve stem, and a metering valve stem seal ha...

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Bibliographische Detailangaben
Hauptverfasser:	HODGES, LEE M, WARD, KERRY, STUART, ADAM J, HODSON, PETER D, HOWGILL, STEPHEN J, BUNTING, JOHN P
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HANDLING THIN OR FILAMENTARY MATERIAL HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TRANSPORTING
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Beschreibung
Zusammenfassung:	Various embodiments of a metered dose inhaler that includes a metering valve are disclosed. The inhaler includes a reservoir containing a pressurized formulation of medicament and carbon dioxide. The metering valve includes a metering chamber, a metering valve stem, and a metering valve stem seal having an opening through which the metering valve stem passes to form a dynamic seal between the metering valve stem and outside atmosphere. The metering valve stem seal has a Shore D hardness of 45 to 80 and its opening is adapted to be stretched wider by the metering valve stem passing through it than it would be absent the valve stem. Divers modes de réalisation d'un inhalateur doseur qui comprend une soupape de dosage sont décrits. L'inhalateur comprend un réservoir contenant une formulation sous pression de médicament et de dioxyde de carbone. La soupape de dosage comprend une chambre de dosage, une tige de soupape de dosage, et un joint de tige de soupape de dosage ayant une ouverture à travers laquelle passe la tige de soupape de dosage pour former un joint d'étanchéité dynamique entre la tige de soupape de dosage et l'atmosphère extérieure. Le joint de tige de soupape de dosage a une dureté Shore D de 45 à 80 et son ouverture est conçue pour être étendue plus large par la tige de soupape de dosage le traversant qu'elle ne le serait en l'absence de la tige de soupape.