Optical Spectrophotometer
First Claim
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1. A system for determining the amount of an analyte in a subject'"'"'s blood, the system comprising:
- a set of light sources;
a set of light detectors, each light detector being operable to output data corresponding to an amount of light reaching the light detector;
a set of filters, each filter being positioned in front of one of the light detectors;
a data processor, the data processor being coupled to each light detector and being operable to read the output of each light detector, whereinthe light sources are configured such that when the system is in operation the light sources simultaneously emit light;
the data processor is configured to read the data output from each light detector at substantially the same time when the system is in operation; and
the data processor is further configured to use the read data to calculate the amount of the analyte.
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Abstract
In one aspect, the present invention provides systems and methods for non-invasively determining the amount of an analyte in a subject'"'"'s blood using a set of light sources and a set of light detectors for measuring optical density. Advantageously, in embodiments of the invention, the light sources are operated such that each of the light sources outputs light at the same time, thereby concurrently illuminating the fingertip with light from each light source, and while the fingertip is illuminated by the light sources, a data processor reads data output from each light detector substantially simultaneously.
34 Citations
20 Claims
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1. A system for determining the amount of an analyte in a subject'"'"'s blood, the system comprising:
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a set of light sources; a set of light detectors, each light detector being operable to output data corresponding to an amount of light reaching the light detector; a set of filters, each filter being positioned in front of one of the light detectors; a data processor, the data processor being coupled to each light detector and being operable to read the output of each light detector, wherein the light sources are configured such that when the system is in operation the light sources simultaneously emit light; the data processor is configured to read the data output from each light detector at substantially the same time when the system is in operation; and the data processor is further configured to use the read data to calculate the amount of the analyte. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for determining the amount of an analyte in a subject'"'"'s blood, the system comprising:
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(1) obtaining a device comprising;
(i) a set of light sources and (ii) a set of light detectors, each light detector being operable to output data corresponding to an amount of light reaching the light detector;(2) positioning the device and/or a finger of the subject such that the fingertip of the finger is positioned between the set of light sources and the set of detectors; (3) operating the light sources such that each of the light sources outputs light at the same time, thereby concurrently illuminating the fingertip with light from each light source; (4) while performing step (3), using a data processor to read data output from each light detector substantially simultaneously; and (5) after performing step (4), using said data to calculate the amount of the analyte. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification