Noninvasive Analyte Testing Using Structured Light and UV Spectra
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Solution Overview
Problem
Existing analyte testing technologies face challenges such as invasiveness, high cost, complexity, and difficulty in achieving real-time, portable, and accurate non-invasive measurements due to issues like mixed spectral signals and interference from skin components.
Innovation Solution
A method and system utilizing structured light and ultraviolet light to distinguish blood vessel locations, select testing points, and excite fluorescence radiation signals for accurate spectral data analysis, combined with a trained model for analyte concentration prediction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Raman spectroscopy is used for non-invasive analyte measurement, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts and eliminates the harmful spectral interference from skin components by separately measuring and subtracting the skin spectrum from the total spectrum. This allows use of simpler absorption spectroscopy instead of complex Raman spectroscopy while maintaining measurement precision.
Solution Approach 2:
The patent applies preliminary anti-action by pre-measuring the skin component spectrum and using it to counteract the interference in subsequent analyte measurements. This preliminary measurement enables accurate analyte detection without requiring complex Raman systems.
2Ease of manufacture
If absorption spectroscopy is used for non-invasive testing, then ease of manufacture is improved, but measurement precision deteriorates due to mixed spectral signals
Solution Approach 1:
The patent segments the spectral measurement into two separate components: skin component spectrum and analyte spectrum. By measuring these separately and combining them, the system achieves both ease of manufacture through simple absorption spectroscopy and measurement precision through spectral decomposition.
Solution Approach 2:
The patent introduces an intermediary approach by using the skin spectrum as a reference to isolate the analyte spectrum. This intermediary measurement enables accurate analyte concentration determination while maintaining system simplicity.
3Measurement precision
If multiple biological signals are collected from different body positions, then measurement precision is improved, but device complexity and information processing complexity increase
Solution Approach 1:
The patent applies local quality by focusing measurement on a specific local area (fingertip) rather than collecting signals from multiple body positions. The spectral processing techniques compensate for local variations, achieving accurate measurement without the complexity of multi-position sensing.
4Ease of operation
If spectral signals from different components are mixed together, then ease of operation is improved, but measurement precision deteriorates due to difficulty in signal separation
Solution Approach 1:
The patent applies preliminary action by pre-measuring and storing the skin component spectrum before analyte measurement. This preliminary spectral data is then used to subtract skin interference from the total spectrum, enabling easy operation with high precision in the actual measurement phase.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables non-invasive, cost-effective, and real-time analyte testing with high accuracy by distinguishing vessel and non-vessel areas, reducing interference, and correlating spectral data directly with analyte concentration.
Implementation Method 1
irradiating a first area by structural light within a first wavelength range, and imaging the first area, to obtain a first image of an imaging area
Implementation Method 2
irradiating the first area by ultraviolet light within a second wavelength range, and imaging the first area, to obtain a second image of the imaging area
Data Source
AI summary
The present invention provides a method and a system for testing an analyte, a medium, and a device. The method includes: imaging: irradiating a first area by structural light within a first wavelength range, and imaging the first area, to obtain a first image of an imaging area; and irradiating the first area by ultraviolet light within a second wavelength range, and imaging the first area, to obtain a second image of the imaging area; spectral obtaining: obtaining depth information that indicate uneven distribution of the analyte in the imaging area from the first image; and based on the depth information, obtaining spectral data, at a desired position from the second image, that indicate uneven distribution of the analyte in the imaging area; and analyzing step: obtaining information about the analyte in the imaging area based on the obtained spectral data.