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    • 3. 发明申请
    • METERED DOSE INHALER
    • 计量剂量吸入器
    • WO2003053501A1
    • 2003-07-03
    • PCT/EP2002/014588
    • 2002-12-19
    • CHIESI FARMACEUTICI S.P.A.
    • DAVIES, Rebecca, JayneGANDERTON, DavidLEWIS, David, AndrewMEAKIN, Brian, John
    • A61M15/00
    • A61K9/008A61K31/352A61K47/10A61K47/14A61M15/009
    • The present invention relates to pressurized metered dose inhaler (pMDI) actuators (2) with laser drilled orifices and to medicinal aerosol solution formulation products comprising these actuators (2). In particular, the present invention relates to the optimisation of the output characteristics of drug solution formulations in hydrofluoroalkanes (HFAs) by use of pMDIs with actuators (2) with laser drilled orifices of specific dimensions. Moreover, the actuators (2) of the present invention allow the use of solution formulations with a high ethanol content and a high ratio of ethanol to active ingredients and thus, the use of poorly soluble active ingredients in solution formulations and allow the use of solution formulations which are substantially free of low volatility components.
    • 本发明涉及具有激光钻孔的加压计量吸入器(pMDI)致动器(2)和包括这些致动器(2)的医用气溶胶制剂产品。 特别地,本发明涉及通过使用具有特定尺寸的激光钻孔的致动器(2)的pMDI来优化氢氟烷烃(HFAs)中药物溶液制剂的输出特性。 此外,本发明的致动器(2)允许使用具有高乙醇含量和高比例的乙醇与活性成分的溶液制剂,因此在溶液制剂中使用难溶性活性成分并允许使用溶液 基本上不含低挥发性组分的制剂。