UNIT DOSE CAPSULES AND DRY POWDER INHALER

摘要

The dry powder inhaler comprises an intake section; a mixing section, and a mouthpiece. The mouthpiece is connected by a swivel joint to the mixin g section, and may swivel back into the intake section and be enclosed by a cover. The intake chamber comprises a piston with a tapered piston rod and spring, and one or more bleed-through orifices to modulate the flow of air through the device. It optionally comprises a feedback module to generate a tone indicating when th e proper rate of airflow has been achieved. The mixing section holds a capsule with holes containing a dry powder medicament, and further opens and closes the capsule when the intake section is at a certain angle to the mouthpiece. The mixing section is a Venturi chamber to impart a cyclonic flow of air passing throug h the mixing chamber.