| 摘要 |
A powder inhaler comprises a means 14 for dispensing powder into an air conduit with a deflecting device 1 mounted therein, wherein the deflecting device includes one or more rotatably mounted deflecting elements 4. The deflecting device may be located towards the nozzle outlet of the inhaler, preferably being in a detachable nozzle. The deflecting device may be driven by a drive device 8 that is driven by inhaling or by a battery driven motor. Alternatively the inhaler may comprise rotatable helical vanes (Fig 6) of variable pitch or deflecting elements whose paths of rotation sweep a part only of the cross-section of the air conduit (Fig 4). The deflecting elements may also be propellers or turbines (Fig 5), and have low friction surfaces. Alternatively the deflecting devices can be used in pressurized metered dose inhalers or nebulizing devices. |
