Dry powder inhalers with rotating piercing mechanisms and...

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/06 (2006.01) A61M 15/00 (2006.01)

Patent

CA 2732827

Dry powder inhalers with rotatable piercing mechanisms facilitate the use of dose container assemblies having dose containers arranged in concentric rows. A piercing mechanism is operably associated with the dose container assembly and is configured to pierce sealants that seal a dose container. The piercing mechanism is rotatable such that it can serially alternate between the two rows of dose containers. The piercing mechanism includes a rotatable drum, an elongate piercing member, and a biasing member operably associated with the piercing member. The rotatable drum has an open end, an opposite closed end, and a cylindrical wall that extends from the closed end and terminates at the open end. The closed end includes an aperture formed therein in a location adjacent to the wall. The elongate piercing member is extended and retracted through the aperture to pierce the sealants of a dose container.

Linvention concerne des inhalateurs de poudre sèche à mécanismes de percement rotatifs qui facilitent lutilisation densembles de contenants unidoses dont les contenants unidoses sont disposés en rangées concentriques. Un mécanisme de percement est associé fonctionnellement à lensemble de contenants unidoses et est configuré pour percer lélément détanchéité qui ferme hermétiquement le contenant unidose. Le mécanisme de percement peut pivoter pour alterner séquentiellement entre les deux rangées de contenants unidoses. Le mécanisme comprend un tambour rotatif, un élément de percement allongé et un élément de décentrement associé fonctionnellement à lélément de percement. Le tambour rotatif comporte une extrémité ouverte, une extrémité opposée fermée et une paroi cylindrique qui sétend à partir de lextrémité fermée et aboutit à lextrémité ouverte. Dans lextrémité fermée est pratiquée une ouverture en un point adjacent à la paroi. Lélément de percement allongé est déployé et rétracté à travers louverture pour percer le matériau détanchéité dun contenant unidose.

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