Lateral flow assay reader based on human perception and method relating thereto
US10852242B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2017 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Nov 19, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/8483
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An instrument for reading a lateral flow assay device by detecting color changes based on human perception includes an optics module having a camera, a signal processor, a storage memory and a comparator circuit. The storage memory has stored therein a dataset of sample readings of reference assay devices similar in structure and function to that of the lateral flow assay device. The sample readings are based on human visual perceptions of colorimetric changes in the detection zones of the reference assay devices. The comparator circuit compares the measured colorimetric data relating to the assay device read by the instrument with the stored database of sample readings based on human visual perceptions of the colorimetric changes of the reference assay devices, and generates a comparison signal which is provided to the signal processor. The signal processor generates a determination signal indicative of the presence, absence or quantity of an analyte.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.