Micromachined fluid analysis device and method
US6637257B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 2002 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Oct 31, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and device for performing fluid analysis by separating cells and/or particles from a fluid, such as a biological, vehicular or industrial fluid. The device is a micromachined filtering device comprising a substrate with through-thickness vias having approximately equal diameters that prevent passage through the substrate of a first material while permitting passage through the substrate of other materials having diametrical dimensions less than the diameter of the vias. Electrodes are located on a surface of the substrate between vias so that as the first material collects at the surface of the substrate, the electrodes become electrically connected to produce an output signal in some proportion to the amount of the first material collected. The device can incorporate multiple micromachined substrates, yielding an analysis system that produces an electrical output for each of a number of properties or parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.