Polarized Light Blood Analyte Measurement Without Finger Pricks
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Solution Overview
Problem
Conventional methods for measuring blood analyte levels, such as blood glucose, are invasive, complex, and expensive, making them unsuitable for widespread use.
Innovation Solution
A non-invasive device using a light arrangement to emit a light beam, a polarized filter to block light, a sensor to detect blockage, and a control unit to determine blood analyte levels based on the angle of the polarized filter, enabling simple, efficient, and cost-effective measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional non-invasive methods (laser exposure, spectroscopy) are used to measure blood analyte levels, then measurement capability is achieved, but device complexity and manufacturing cost increase significantly
Solution Approach 1:
The patent changes the optical parameters by using polarized light at specific wavelengths and measuring rotation angles caused by optically active substances in blood. This simplifies the device compared to complex spectroscopy methods while maintaining measurement capability through polarimetry principles
Solution Approach 2:
The patent replaces complex mechanical/optical spectroscopy systems with a simpler polarimetry system that uses polarized light filters and angle measurement. This substitution reduces device complexity while achieving blood analyte measurement through optical rotation detection
2Measurement precision
If conventional non-invasive methods (laser exposure, spectroscopy) are used to measure blood analyte levels, then measurement capability is achieved, but manufacturing cost increases significantly
Solution Approach 1:
The patent uses cost-effective polarized light filters and standard angle measurement components instead of expensive laser and spectroscopy equipment. This parameter change in the measurement approach dramatically reduces manufacturing cost while maintaining measurement precision for blood analyte levels
Solution Approach 2:
The patent employs inexpensive optical components such as polarized filters and simple light sources that can be easily manufactured and replaced, making the device affordable for widespread use compared to expensive conventional medical devices
3Measurement precision
If invasive finger-prick methods are used to measure blood analyte levels, then measurement accuracy is achieved, but user comfort and convenience deteriorate
Solution Approach 1:
The patent replaces invasive mechanical blood sampling with non-invasive optical measurement. By using polarized light to detect optically active substances through tissue, the system eliminates needle pricks while maintaining measurement accuracy for blood analyte levels
Solution Approach 2:
The patent uses polarized light as an intermediary to measure blood analyte levels without direct blood contact. The light interacts with optically active substances in the tissue, providing indirect measurement that avoids invasive procedures while achieving accurate results
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
The device allows for quick and pain-free measurement of blood analyte levels, including glucose and HbA1c, with accuracy comparable to invasive methods, and is scalable for a large population.
Implementation Method 1
a light arrangement configured to emit a light beam with a first wavelength
Implementation Method 2
the filtering unit comprising a polarized filter configured to be displaced between a base position and a target position, wherein the filtering unit is configured to block the light beam received directly from the light arrangement at the base position
Implementation Method 3
a measuring arrangement configured to measure an angle of the polarized filter at the target position with respect to the base position thereof
Data Source
AI summary
Disclosed is a device for non-invasive measurement of at least one blood analyte level in a user. The device comprises a light arrangement to emit a light beam with a first wavelength towards a body part of the user, a filtering unit to be arranged to receive the light beam passed through the body part of the user, with a polarized filter configured to be displaced between a base position and a target position, a measuring arrangement to measure an angle of the polarized filter, a sensor arranged to receive the light beam passed through the polarized filter, and generate a block signal in response to blockage of the light beam to be received thereat, and a control unit configured to determine the blood analyte level based on the measured angle of the polarized filter at the target position thereof in response to receipt of the block signal.