Microdroplet dispensing for a medical diagnostic device
US6830934B1 · kind B1 · utility
156Cited by
18References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1999 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Dec 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2333/96447
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A medical diagnostic device has a non-absorbent substrate that has a hydrophilic target area on which a reagent is deposited by non-impact printing of microdroplets. During deposition, the device is moved relative to the stream of microdroplets to form a substantially uniform reagent layer on the substrate. The device is particularly well adapted for measuring blood coagulation times. In a preferred embodiment, coagulation times are determined by monitoring the optical transmission of light through the target area as an applied blood sample interacts with the reagent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.