A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 9/14 (2006.01) A61J 3/02 (2006.01) A61K 9/16 (2006.01) A61K 31/7088 (2006.01) A61K 38/00 (2006.01) A61K 38/28 (2006.01) A61K 48/00 (2006.01) A61K 31/70 (2006.01)
Patent
CA 2253393
A process for preparing ultrafine powders of biological macromolecules comprises atomizing liquid solutions of the macromolecules, drying the droplets formed in the atomization step, and collecting the particles which result from drying. By properly controlling each of the atomization, drying, and collection steps, ultrafine dry powder compositions having characteristics particularly suitable for pulmonary delivery for therapeutic and other purposes may be prepared.
L'invention a trait à un procédé de préparation de poudres ultrafines de macromolécules biologiques, lequel procédé consiste à pulvériser des solutions liquides de ces macromolécules, à sécher les gouttelettes formées pendant la phase de pulvérisation et à recueillir les particules résultantes après séchage. Il est, de la sorte, possible de préparer, grâce à la maîtrise des phases de pulvérisation, de séchage et de collecte, des compositions à base de poudre ultrafine sèche possédant des propriétés les rendant des plus aptes à une administration dans les poumons à des fins thérapeutiques ou autres.
Boardman Terence D.
Brewer Thomas K.
Platz Robert M.
Gowling Lafleur Henderson Llp
Inhale Therapeutic Systems
Novartis Ag
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