| 摘要 |
An appliance for the direct passage of a medicament aerosol from a constant atomiser (2) to a mouth-piece, (26) wherein the appliance includes a vented reservoir (26) in which excess aerosol from the atomiser is temporarily storeable at atmospheric pressure prior to inhalation, is described. The reservoir is able to store the constantly formed excess aerosol during periods of non-inhalation of the user. Because the reservoir is vented to atmosphere, the stored aerosol is maintained at atmospheric pressure, ensuring that such aerosol is not pressurised. A nebuliser including a pressure control valve located in the supply passage of carrier gas between the gas pump or pumps and the atomisation portion of the nebuliser is also described (Fig 3-not shown). The valve can be used to alter the pressure of the carrier gas. Thus, the user can determine when atomisation should occur, generally at or just before each inhalation, and reduce or stop atomisation when not desired or required. |
