Inhaler with means for improving chemical stability of...

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 83/14 (2006.01) A61K 9/00 (2006.01)

Patent

CA 2437746

The present invention relates to a medicinal aerosol solution formulation product with improed chemical stability, comprising a pressurized metered dose inhaler (10), comprising an aerosol canister (16) equipped with a metering valve (18) and containing a medicinal aerosol solution formulation (12) containing an active ingredient subject to a degradation by means of peroxides or other leachables, a hydrofluorocarbon propellant, a co-solvent and optionally a low-volatility component, wherein optionally part or all of the internal surfaces of said inhaler consists of stainless steel, anodized aluminum or are lined with an inert organic coating, and wherein the canister has a rim with rounded edges which avoids contact of a sharp edge with the rubbers used as valve gaskets.

Cette invention se rapporte à un produit d'une formule de solution aérosol médicinale présentant une stabilité chimique renforcée, et comprenant un aérosol doseur (10) pressurisé, comportant un absorbeur (16) aérosol pourvu d'une soupape de dosage (18) et contenant une formule de solution aérosol médicinale (12) renfermant : un composant actif sujet à une dégradation au moyen de peroxydes ou autres lixiviables ; un propulseur hydrofluorocarbone ; un co-solvant ; et éventuellement un composant à faible volatilité. L'ensemble ou une partie des surfaces internes dudit inhalateur sont éventuellement fabriquées en acier inoxydable, en aluminium anodisé, ou sont garnies d'un revêtement organique inerte. L'absorbeur comprend un bord arrondi permettant d'éviter tout contact d'un bord acéré avec les rondelles servant de joints de soupape.

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