| 摘要 |
<p>An inhaler device and a method are disclosed in which powder for inhalation is jetted off a prepared device surface containing a defined pre-metered quantity of finely divided powder. The jetting function is obtained by a directed air stream (16) having the characteristic of an air jet pushing or cutting free a medical powder applied to a carrier surface (10) and by creating a stream of air dispersing the powder into a the inspiratory air (3) at the moment it is being inhaled. An inhaler device utilizing the present method is preferably further provided with active (air permeable) porous walls (4) for further preventing finely divided powder from sticking to the inner faces of the inhaler device by creating a pressure gradient across the active wall, thus forcing a small flow of air through the active wall thereby keeping the powder from sticking to the inner faces (4).</p> |
