Assay device employing fluorescent labels
US10578556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2014 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Jan 12, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6484
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An assay device is disclosed comprising a housing (10) and a test portion (2), electronic circuitry (30) and an optical assembly (41), each at least partially located in the housing (10). The test portion (2) comprises one or more test zones (2E, 2F) adapted to receive an analyte (22) and a fluorescent label associated with the analyte, the fluorescent label being excitable by excitation light and adapted to emit emission light upon excitation by excitation light. The electronic circuitry (30) comprises one or more light sources (31, 32) and one or more light detectors (33). The optical assembly (41-44) comprises one or more excitation light guides (41, 44) adapted to guide excitation light from the one or more light sources (31, 32) to the one or more test zones (2e, 2f), and/or one or more emission light guides (43, 44) adapted to guide emission light from the one or more test zones (2e, 2f) to the one or more light detectors (33). The sets of emission light guides (43, 44) and excitation light guides (41, 44) may also take the form of individual integral one-piece light guide units where the emission light guide unit rests within the excitation light guide unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.