Zhi Xu

US Patent:

8552359, Oct 8, 2013

Filed:

Mar 23, 2010

Appl. No.:

12/729886

Inventors:

Zhi Xu - Saint Louis MO, US

Assignee:

The Curators of the Univesity of Missouri - Saint Louis MO

International Classification:

G01N 33/48

US Classification:

250226, 356 39

Abstract:

An apparatus for concentrating light and associated method of use is disclosed. This apparatus includes a first outer wall having an anterior end, a posterior end, an inner surface and an outer surface, the inner surface defining an interior portion, the interior portion having an anterior end and a posterior end, and a light source disposed within the interior portion. The first outer wall has an opening in the posterior end, the opening having an opening diameter. The interior portion has a substantially frusto-conical shape and has a cross-sectional diameter at the opening equal to the opening diameter and a second cross-sectional diameter near the anterior end that is less than the opening diameter and the inner surface is photo-reflective. The light passes through a sample through an aperture and a collector lens or a second outer wall. A transmission diffraction grating may be utilized.

US Patent:

20090247843, Oct 1, 2009

Filed:

Mar 20, 2009

Appl. No.:

12/407999

Inventors:

Zhi Xu - Saint Louis MO, US

Assignee:

THE CURATORS OF THE UNIVERSITY OF MISSOURI - Saint Louis MO

International Classification:

A61B 5/1455

US Classification:

600316

Abstract:

A method and system for detecting glucose in a biological sample is disclosed. This includes illuminating a biological sample with a light source, collecting transmitted, transflected or reflected light from the sample with a detector, generating spectral data of one or more components in the sample other than glucose in a spectral data analysis device, and analyzing the spectral data of the one or more components, sufficient to provide a glucose measurement from the spectral data of the one or more components other than glucose with the spectral data analysis device.

US Patent:

20200155042, May 21, 2020

Filed:

Jan 27, 2020

Appl. No.:

16/773895

Inventors:

- Sunnyvale CA, US
Zhi Xu - Saint Louis MO, US

International Classification:

A61B 5/1455
A61B 5/145

Abstract:

A method and system for detecting glucose in a biological sample is disclosed. This includes illuminating a biological sample with a light source, collecting transmitted, transflected or reflected light from the sample with a detector, generating spectral data of one or more components in the sample other than glucose in a spectral data analysis device, and analyzing the spectral data of the one or more components, sufficient to provide a glucose measurement from the spectral data of the one or more components other than glucose with the spectral data analysis device.