Method and apparatus for driving a transducer of an inhalation device
US8371294B2 · kind B2 · utility
5Cited by
23References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2009 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Dec 16, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.