Thermal drop generator
US7469696B2 · kind B2 · utility
52Cited by
4References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2005 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Jan 26, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M15/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A silicon die having an orifice layer with plural openings formed therein defines a drop ejection device for use in a handheld inhaler. An underlying control layer defines fluid chambers, each carrying a heat transducer. A control system energizes selected heat transducers to heat fluid in the chambers, vaporizing the fluid, which is ejected through the orifices in small droplets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.