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    • 5. 发明申请
    • CAPSULES FOR DRY POWDER INHALERS AND METHODS OF MAKING AND USING SAME
    • 干粉粉末吸收剂的制备方法及其制备方法和使用方法
    • WO2003094890A1
    • 2003-11-20
    • PCT/US2003/014309
    • 2003-05-07
    • NEKTAR THERAPEUTICSMILLER, DanforthLECHUGA-BALLESTEROS, David
    • MILLER, DanforthLECHUGA-BALLESTEROS, David
    • A61K9/12
    • A61K9/0075A61K9/4816
    • Pulmonary delivery of dry powder formulations by aerosol inhalation has received much attention as an attractive alternative to intravenous, intramuscular, and subcutaneous injection, since this approach eliminates the necessity for injection syringes and needles. The present invention provides dry powder filled cellulose-based capsules having particular utility for use with dry powder inhalers. Such capsules not only readily coordinate with conventional DPIs but also coordinate with conventional powder filling technologies, thereby saving time, labor and cost. The invention further provides a novel procedure for determining, ab initio , appropriate and optimal conditions for preparing such powder filled capsules. Specifically, when packaging dry powder formulations for long-term storage, it is important to ensure that the water content of the powder does not exceed the critical moisture point, that point at which the powder loses physical and chemical stability. The present invention describes means for predicting equilibrium moisture contents, which in turn can be used to establish suitable capsule preparation and filling protocols.
    • 通过气溶胶吸入的干粉制剂的肺部输送作为静脉内,肌内和皮下注射的有吸引力的替代物已经受到很多关注,因为该方法消除了注射针管和针头的必要性。 本发明提供了干粉填充的纤维素基胶囊,其特别适用于干粉吸入器。 这种胶囊不仅可以容易地与传统的DPI协调,而且还可以配合传统的粉末填充技术,从而节省时间,人力和成本。 本发明还提供了一种用于确定制备这种填充粉末的胶囊的从头,适当和最佳条件的新方法。 具体来说,当包装干粉配方用于长期储存时,重要的是确保粉末的含水量不超过临界水分点,即粉末失去物理和化学稳定性的点。 本发明描述了用于预测平衡水分含量的方法,其依次可用于建立合适的胶囊制备和填充方案。