Assay device having controllable sample size
US11921107B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2020 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Nov 14, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/54388
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an assay device which comprises a liquid sample addition zone, a reagent zone, a detection zone, and a wicking zone, all defining a fluid flow path. The device further comprises a reagent addition zone along and in fluid communication with the fluid flow path downstream of the sample addition zone and upstream of the detection zone. An interrupting wash is added at this reagent addition zone in accordance with the method of the subject invention to control sample volume. The interrupting wash fluid is added at a predetermined fill volume on the chip device and also serves to wash the detection channel and fill the remaining chip volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.