US Patent Application 20090217925 - METHOD AND APPARATUS FOR DRIVING A TRANSDUCER OF AN INHALATION DEVICE
InventorsUS Classes128/200.14, LIQUID MEDICAMENT ATOMIZER OR SPRAYER310/317Input circuit for mechanical output from piezoelectric elementAttorney, Agent or FirmInternational ClassesA61M 11/00H01L 41/09 Abstract textAn inhaler is disclosed wherein medicament in a flat-bottomed container is aerosolized with a vibrator piezoelectric transducer. The transducer is driven by a signal that excites multiple harmonic frequencies to create a complex pattern of oscillations. A circuit for generating the drive signal to the transducer is also disclosed. |
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