Thermal drop generator
US7243648B2 · kind B2 · utility
5Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | May 18, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B1/24
- 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.