Process for preparing a medicament

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/14 (2006.01) A61K 9/20 (2006.01)

Patent

CA 2575957

The present invention provides a process for preparing a particulate medicament that has greater homogeneity and a lower adhesion between the particles of the active ingredient and the carrier. The process comprises the steps of: (a) combining a pharmaceutically active ingredient in the form of an agglomerate of primary particles having an agglomerate particle size such that the agglomerate is capable of passing through a sieve having a mesh of 50-3000 ~m with a pharmaceutically acceptable particulate carrier, and (b) mixing the resultant material in a mixer to break up the agglomerate into primary particles dispersed in the pharmaceutically acceptable particulate carrier such that 90% or more of the pharmaceutically active ingredient exists as primary particles having a particle size of 50 ~m or less.

La présente invention concerne un procédé destiné à préparer un médicament sous forme particulaire présentant une meilleure homogénéité et une adhésion plus faible entre les particules de l'ingrédient actif et de l'excipient. Ce procédé consiste (a) à combiner un ingrédient pharmaceutiquement actif sous la forme d'un agglomérat de particules primaires dont la taille est suffisamment petite pour que l'agglomérat traverse un tamis présentant une maille de 50 à 3000 µm avec un excipient particulaire pharmaceutiquement acceptable, et (b) à mélanger la matière résultante dans un mélangeur en vue de fragmenter l'agglomérat en particules primaires dispersées dans l'excipient particulaire pharmaceutiquement acceptable de sorte qu'au moins 90 % de l'ingrédient pharmaceutiquement actif se présente sous forme de particules primaires de taille inférieure ou égale à 50 µm.

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