Aerosol powder dosage dispensing device

Claim 1

A dispenser for dispensing single doses of finely divided powdered medicament for oral use, comprising a mouthpiece and an integral housing, a converging funnel-shaped entrance in the housing leading to the mouthpiece, a conical screen element fitting into said entrance, a plug with a conical end introducible into the housing from the end opposite the mouthpiece and provided with sealing means, whereby a medicament chamber of predetermined size is formed by introducing the plug a predetermined distance into said housing, at least one movable ball in the medicament chamber, which ball vibrates or spins when gas pressure is introduced, whereby turbulence results, pressure means for introducing gas into the chamber at an angle to the chamber, and an extension on the housing at right angles to the mouthpiece axis and shaped to receive gas from said pressure means, which extension and housing is provided with a plurality of conduits to the medicament chamber, one of larger crosssection than the others, the conduits being positioned so that gas flowing through them produces streams which contact each other in the chamber.