US 12,150,759 B2 · Blood-solute calculation with a mobile device using non-invasive spectroscopy

Abstract

This document describes techniques and devices for blood-solute calculation with a mobile device using non-invasive spectroscopy. A mobile device (502) includes a light source (504) that emits light toward an interferometer (508) that uses mirrors to separate and recombine the light. The interferometer directs the recombined light toward a person. Light reflected from, or transmitted through, the person is received through a reception port (506) to a photodetector (510) that outputs photodetector data that corresponds to a measured light intensity of the reflected and transmitted light as a function of a path length of the light or a mirror position of the interferometer. Based on the photodetector data, an interferogram is generated. Applying a technique such as a Fourier transform to the interferogram, a spectrum data set of the reflected and transmitted light is generated. Based on the spectrum data set, a concentration of solutes in the person's blood is calculated.

Claims20

Dependent claims

A method comprising:

emitting light from a light source toward an interferometer;
directing the light, by the interferometer, toward a person;
receiving, by a photodetector, reflected or transmitted light, the reflected or transmitted light reflected from, or transmitted through, the person;
outputting, by the photodetector, detector data that corresponds to a measured light intensity of the reflected or transmitted light;
generating, based on the detector data, a reflectance spectrum data set or a transmittance spectrum data set of the received light;
generating, based on the reflectance spectrum data set or the transmittance spectrum data set, an absorbance spectrum data set;
performing a background noise correction on the absorbance spectrum data set to provide a background-noise-corrected absorbance spectrum data set;
and
calculating a concentration of one or more solutes inside the person's body, based on the background-noise-corrected absorbance spectrum data set.

6 more elements

A mobile computing device comprising:

a light source disposed at least partially within a housing and configured to emit light;
an interferometer disposed at least partially within the housing and configured to direct the light toward a person;
a reception port disposed at least partially within the housing and configured to collect light reflected from, or transmitted through, the person;
a photodetector disposed at least partially within the housing and configured to:
receive the reflected or transmitted light;
and
output detector data that corresponds to measured light intensity of the received light;
and
a spectroscopy module configured to:
generate, based on the detector data, a reflectance spectrum data set or a transmittance spectrum data set of the received light;
and
calculate a concentration of one or more solutes inside the person's body based on a background-noise-corrected absorbance spectrum data set, the background-noise-corrected absorbance spectrum data set corrected for background noise and generated based on:
the reflectance spectrum data set;
or
the transmittance spectrum data set.

12 more elements

Dependencies are inferred from the claim text.

Blood-solute calculation with a mobile device using non-invasive spectroscopy

Life of this patent

Blood-solute calculation with a mobile device using non-invasive spectroscopy

Life of this patent

Abstract

Claims20