Delivery of small droplets to the respiratory system via electronic breath actuated droplet delivery device

Abstract

An ejector mechanism of a droplet delivery device includes a piezoelectric actuator coupled to an acoustic horn and an aperture plate including a plurality of openings. At least the fluid entrance side of one or more of the plurality of openings is configured to provide a surface contact angle of less than 90 degrees and the piezoelectric actuator is operable to oscillate the aperture plate at a frequency to thereby generate an ejected stream of droplets such that at least about 50% of the droplets have an average ejected droplet diameter of less than about 6 microns during use. A sealing mechanism is provided at an interface of the aperture plate and a detachable fluid cartridge.

Dependencies are inferred from the claim text.