Robert S Farrell

US Patent:

20210025828, Jan 28, 2021

Filed:

Oct 14, 2020

Appl. No.:

17/070868

Inventors:

- Westbrook ME, US
Robert P. Farrell - Gray ME, US

International Classification:

G01N 21/78
G01N 33/487
G01N 33/543
G01N 33/558
G08B 5/36

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.

US Patent:

20180149600, May 31, 2018

Filed:

Oct 26, 2017

Appl. No.:

15/794998

Inventors:

- Westbrook ME, US
Robert P. Farrell - Gray ME, US

International Classification:

G01N 21/78
G01N 33/543
G01N 33/558
G01N 33/487
G08B 5/36

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.