Inhalator for powdery substances

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01)

Patent

CA 2645262

The invention relates to an inhalator (1) for powdery substances (33), especially medical substances. Said inhalator comprises a substance reservoir chamber (27) and a metering chamber (34) receiving a defined amount of the substance. The metering chamber is configured as a crossbore (35) of a rod (36) and can be displaced from a filling position (B) to a discharge position (E), in which discharge position (E) the metering chamber (34) is positioned in an air flow channel (21). The aim of the invention is to provide an inhalator of the aforementioned type which allows the metering chamber to be emptied in a manner that is optimal for the patient. For this purpose, the rod (36) has a plurality of metering chambers (34), arranged one behind the after on the rod (36). Said chambers reach the discharge position (E), preferably one by one, during a discharge actuation, and can be blown out one by one as intermingling small portions (instead of one large one) by the effect of the positive air pressure in the air flow channel (21).

L'invention concerne un inhalateur (1) pour l'inhalation de substances pulvérulentes (33), en particulier de substances médicamenteuses, cet inhalateur (1) comprenant une chambre de stockage de substances (27) et une chambre de dosage (34) pouvant contenir une quantité déterminée de ces substances. La chambre de dosage (34) se présente sous la forme d'un perçage transversal (35) à l'intérieur d'une tige (36) et peut être déplacée d'une position de remplissage (B) à une position de décharge (E), dans laquelle la chambre de dosage (34) se trouve dans un canal de circulation d'air (21). L'objectif de l'invention est d'améliorer encore cet inhalateur, en particulier pour que la décharge de la chambre de dosage soit optimale pour le patient. À cet effet, la tige (36) présente plusieurs chambres de dosage (34) situées les unes derrière les autres sur la tige (36), ces chambres passant de préférence successivement en position de décharge (E) lors d'un actionnement de l'inhalateur (1) et se vidant progressivement sous l'effet d'une surpression d'air dans le canal de circulation d'air (21) sous forme de petites quantités qui se mélangent (plutôt qu'une grande quantité).

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Profile ID: LFCA-PAI-O-2042013

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