Dry powder inhalation system for transpulmonary administration

A dry powder inhalation system suitable for transpulmonary administration characterized by using a combination of: (1) A vessel housing a freeze-dried composition that contains a single dose of an active ingredient, and has: (i) a non-powder cake-like form, (ii) a disintegration index of 0.015 or mo...

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Hauptverfasser: FUKUNAGA YUICHIRO, YAMASHITA CHIKAMASA, IBARAGI SHIGERU, AKAGI AKITSUNA
Format: Patent
Sprache:eng
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Zusammenfassung:A dry powder inhalation system suitable for transpulmonary administration characterized by using a combination of: (1) A vessel housing a freeze-dried composition that contains a single dose of an active ingredient, and has: (i) a non-powder cake-like form, (ii) a disintegration index of 0.015 or more, and (iii) a property of becoming fine particles having a mean particle diameter of 10 microns or less or a fine particle fraction of 10% or more upon receipt of an air impact having an air speed of at least 1 m/sec and an air flow rate of at least 17 ml/sec; and (2) A device capable of applying said air impact to the freeze-dried composition in said vessel and for discharging the powder-form freeze-dried composition that has been made into fine particles.