Inhaler

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01)

Patent

CA 2760647

An inhaler (10), such as a breath-actuated metered-dose inhaler, for delivering medicament to a patient. The inhaler (10) comprises a housing for holding the medicament and having an air inlet means (12) and a medicament delivery port which together define an air flow path into which the medicament is dispensed. The air inlet means (12) comprises an array of elongate apertures (24) formed in the housing, the long sides of adjacent apertures (24) facing each other. Each aperture (24) is provided with a respective different opening in an outer surface of the housing. The opening of each aperture (24) extends in two different planes such that, if at least a part of the opening is covered in one of the two different planes during inhalation by the patient, a void space is created between the cover and the aperture (24) so as to provide an air flow path through the void space to the at least one aperture (24 ).

L'invention concerne un inhalateur (10), par exemple un inhalateur-doseur actionné par la respiration, pour administrer un médicament à un patient. L'inhalateur (10) comprend un boîtier pour contenir le médicament, qui est muni d'un moyen d'entrée d'air (12) et un orifice d'administration de médicament qui définissent ensemble un trajet de passage de l'air dans lequel est administré le médicament. Le moyen d'entrée d'air (12) comprend une série d'orifices allongés (24) formés dans le boîtier, les côtés longs des orifices adjacents (24) se faisant face. Chaque orifice (24) correspond à une ouverture différente respective dans une surface externe du boîtier. L'ouverture de chaque orifice (24) s'étend dans deux plans différents de telle sorte que, si au moins une partie de l'ouverture est couverte dans l'un des deux plans différents pendant l'inhalation par le patient, un espace vide est créé entre la partie couvrante et l'orifice (20) de façon à former un trajet d'écoulement de l'air dans l'espace vide vers le ou les orifices (24).

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