Method and apparatus for driving a transducer of an...

Details Method and apparatus for driving a transducer of an... Method and apparatus for driving a transducer of an...

A - Human Necessities

61

M

A61M 15/00 (2006.01) B05B 17/06 (2006.01) H01L 41/09 (2006.01)

Patent

CA 2716600

An 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.

La présente invention concerne un inhalateur dans lequel un médicament contenu dans un réceptacle à fond plat est transformé en aérosol par un transducteur piézoélectrique à vibrateur. Le transducteur est commandé par un signal qui excite une pluralité de fréquences harmoniques de façon à créer un schéma d'oscillations complexe. La présente invention concerne également un circuit pour générer le signal de commande envoyé au transducteur.

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