Circulaire® II High-Efficiency Aerosol Drug Delivery System

Circulaire® II High-Efficiency Aerosol Drug Delivery System Westmed, a leader in pulmonary medication delivery, introduced the original Circulaire aerosol drug delivery system to the respiratory therapy market in 1997. In 2008, the Circulaire II was developed and featured two main design improvements: (1) the thick vinyl reservoir bag of the original Circulaire was replaced with a thin-film polyethylene reservoir bag that inflates and deflates much more readily, and (2) the small center-post one-way valve was replaced by a large top-hinged one-way “flapper” valve that is instantly responsive to the patient’s inspiratory effort and does not block the flow of any aerosol particles. These two design changes have significantly improved the aerosol delivery performance of the Circulaire II, casting it as the top performing pneumatically-driven aerosol delivery device for adults and children.