Aerosol composition

A - Human Necessities – 61 – K

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Details

A61K 31/137 (2006.01) A61K 9/12 (2006.01) A61K 9/72 (2006.01) A61K 31/138 (2006.01) A61K 31/569 (2006.01) A61K 31/573 (2006.01) A61P 11/00 (2006.01)

Patent

CA 2327336

An aerosol composition comprising a propellant and a first particulate material comprising particles having a median aerodynamic diameter within the range 0.05 to 11 µm, such as a medicament suitable for pulmonary inhalation, and a second particulate material comprising particles having a median volume diameter within the range 15 to 200 µm. The presence of the second particulate material provides good suspension properties, particularly where the propellant is a hydrofluoro alkane.

Composition d'aérosol contenant un propulseur et un premier matériau en particules dont le diamètre aérodynamique moyen est situé dans une plage de 0,05 à 11 mu m, tel qu'un médicament approprié pour une inhalation pulmonaire, ainsi qu'un deuxième matériau comprenant des particules dont le diamètre volumique moyen est situé dans une plage de 15 à 200 mu m. La présence de ce deuxième matériau en particules permet d'obtenir des propriétés de suspension optimisées, en particulier lorsque le propulseur est un hydrofluoroalcane.

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