发明名称 |
Inhalers |
摘要 |
An inhaler for producing an inhalable aerosol of a powdered medicament includes an aerosolising device in the form of a vortex chamber 1. The vortex chamer 1 has a tangential inlet port 3 and an axial port 2. The ratio of the diameter of the vortex chamber 1 to the diameter of the exit port 2 is between 4 and 12. The length of the exit port 2 is less than its diameter. The cross-section of the inlet port 3 is rectangular and is defined at the bottom and at the radially outermost edge by the walls of the vortex chamber 1. The cross-sectional area of the inlet conduit 7, which supplies the medicament in a gas flow to the inlet port 3, decreases in the direction towards the vortex chamber 1. The inlet conduit 7 may be curved. The inhaler is capable of repeatably producing an aerosol of a medicament with a high proportion of particles in the range 1 to 3 microns, while using a 20 relatively small amount of energy. |
申请公布号 |
US2004211419(A1) |
申请公布日期 |
2004.10.28 |
申请号 |
US20040477055 |
申请日期 |
2004.06.17 |
申请人 |
EASON STEPHEN WILLIAM;HARMER QUENTIN JOHN;DUNKLEY MICHAEL JOHN;SARKAR MATTHEW NEIL;PINON JOHN;DUNKLEY MICHAEL JOHN;CLARKE ROGER WILLIAM;HILL STEPHEN HENRY |
发明人 |
EASON STEPHEN WILLIAM;HARMER QUENTIN JOHN;DUNKLEY MICHAEL JOHN;SARKAR MATTHEW NEIL;PINON JOHN;DUNKLEY MICHAEL JOHN;CLARKE ROGER WILLIAM;HILL STEPHEN HENRY |
分类号 |
A61M11/00;A61M11/06;A61M13/00;A61M15/00;(IPC1-7):A61M15/00 |
主分类号 |
A61M11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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