Improvements in and relating to metered dose inhalers

A - Human Necessities – 61 – M

Patent

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A61M 15/00 (2006.01)

Patent

CA 2673491

An inhaler for dispensing a dose of an active agent to the respiratory tract of a patient, which inhaler comprises a housing defined by an upper part and a lower part and a mouthpiece which is attached or is adapted to be attached to said housing; wherein said housing includes storage means for storing an active agent and an airway for delivering said dose from the storage means to the mouthpiece in a stream of air or other gas for administration to a patient, characterised in that said upper part and said lower part of the housing are joined together in a substantially airtight fashion by means of a mechanical fixing, such that a gas flow rate of no more than about 45 litres/minute, preferably no more than about 40 litres/minutes, is required in order to propel a dose of said active agent from the reservoir to the mouthpiece for administration to the patient.

L'invention concerne un inhalateur pour distribuer une dose d'un agent actif dans les voies respiratoires d'un patient, ledit inhalateur comprenant un logement défini par une partie supérieure et une partie inférieure et un embout buccal qui est fixé ou est adapté pour être fixé audit logement ; ledit logement comprenant un moyen de stockage pour stocker un agent actif et une voie aérienne pour distribuer ladite dose à partir du moyen de stockage à l'embout buccal dans un courant d'air ou d'un autre gaz pour administration à un patient, caractérisé en ce que ladite partie supérieure et ladite partie inférieure du logement sont jointes l'une à l'autre de façon essentiellement hermétique à l'air au moyen d'une fixation mécanique, de telle sorte qu'un débit de gaz inférieur à environ 45 litres/minute, de préférence inférieur à environ 40 litres/minutes, est nécessaire afin de propulser une dose dudit agent actif du réservoir à l'embout buccal pour administration au patient.

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