Dry powder delivery system

摘要

A dry powder delivery system having an elongaged tube containing a matrix having a measured amount of dry particles of therapeutic compound and a porous element having a dessicant therein is disclosed. The porous element with the dessicant can be combined with the powder-containing matrix or the they can be two separate elements. The pressure drop induced by inhalation by the user causes air to flow through the tube and into contact with the particles of dry powder for discharging the particles for inhalation by the user.