Methods for producing aripiprazole suspension and...

A - Human Necessities – 61 – K

Patent

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Details

A61K 9/10 (2006.01) A61K 9/19 (2006.01) A61K 31/496 (2006.01) A61K 47/32 (2006.01) A61K 47/38 (2006.01)

Patent

CA 2695178

Disclosed are a method for producing an aripiprazole suspension, wherein the aripiprazole has a mean particle size of 1 to 10 ?m, the method comprising the steps of: (a) combining bulk aripiprazole and a vehicle to form a primary suspension; (b) subjecting the primary suspension to first pulverization using e.g., a high shear pulverizing machine, a dispersion machine that applies shear force to a material to be processed, a colloid mill, an ultrasonic dispersion machine, or a high-pressure jet type emulsifying dispersion machine to form a secondary suspension; and (c) subjecting the secondary suspension to second pulverization using e.g., a high-pressure jet type emulsifying dispersion machine to form a sterile final suspension; and a method for producing a freeze-dried formulation from the aripiprazole suspension.

L'invention porte sur un procédé pour produire une suspension d'aripiprazole, l'aripiprazole ayant une dimension de particule moyenne de 1 à 10 µm, le procédé comprenant les étapes consistant à : (a) combiner de l'aripiprazole en vrac et un véhicule pour former une suspension primaire ; (b) soumettre la suspension primaire à une première pulvérisation à l'aide, par exemple, d'une machine de pulvérisation à cisaillement élevé, d'une machine de dispersion qui applique une force de cisaillement à un matériau devant être traité, d'un moulin à colloïdes, d'une machine de dispersion à ultrasons ou d'une machine de dispersion d'émulsion de type à jet haute pression pour former une suspension secondaire ; et (c) soumettre la suspension secondaire à une seconde pulvérisation à l'aide, par exemple, d'une machine de dispersion d'émulsion de type à jet haute pression pour former une suspension finale stérile ; et sur un procédé pour produire une formulation lyophilisée à partir de la suspension d'aripiprazole.

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