Patent ID: 8684980
Filing Date: 2014-04-01
Classification: A61B,A61F,A61M,G16H

Abstract:
1. A piezoelectric actuated droplet generating device for delivering a fluid to a target as an ejected stream of droplets, the device comprising: a housing; a reservoir disposed within the housing for receiving a volume of fluid; an ejector mechanism comprising an ejector plate having a first surface coupled to a fluid delivery area of the reservoir, the ejector plate including a plurality of openings formed through its thickness; and a piezoelectric actuator coupled to a second surface of the ejector plate, the actuator being operable to oscillate the ejector plate at a frequency to thereby generate an ejected stream of droplets; wherein the ejector mechanism is configured to generate an ejected stream of droplets having an average ejected droplet diameter greater than 20 microns and an average initial droplet ejecting velocity between 0.5 m/s and 10 m/s, the stream of droplets having low entrained airflow such that at least about 75% of the mass of the ejected stream of droplets deposit on a target during use.