Electromagnetic Shielding for Non-Invasive Analyte Sensors
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Solution Overview
Problem
Current non-invasive analyte detection methods using spectroscopic techniques face challenges such as lack of specificity, interference from temperature fluctuations and skin compounds, complexity in placement, and invasiveness, particularly in measuring analytes like glucose in biological materials.
Innovation Solution
A non-invasive analyte sensor system utilizing a detector array operating in radio or microwave frequency ranges with electromagnetic shielding to reduce interference and improve specificity, allowing for non-invasive detection of analytes like glucose, blood ketones, and other biomarkers without the need for invasive procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If non-invasive spectroscopic detection methods are used, then patient comfort and ease of operation are improved, but measurement precision and reliability deteriorate due to interference from temperature fluctuations, skin compounds, and lack of analyte specificity
Solution Approach 1:
The detector array is divided into multiple individually addressable detector elements that can be selectively activated. This segmentation allows the system to probe different depths and locations within biological tissue, enabling targeted detection of analytes while avoiding interference from superficial skin compounds and improving measurement precision through spatially-resolved spectroscopy
Solution Approach 2:
The patent introduces electromagnetic shielding as an intermediary component between the detector array and external radio frequency interference sources. This shield acts as a mediator that blocks RF interference from reaching the sensitive detector elements, thereby improving measurement precision and reliability while maintaining the non-invasive nature of the detection method
2Reliability
If electromagnetic shielding is added to the analyte sensor, then reliability and measurement precision are improved by reducing radio frequency interference, but device complexity increases
Solution Approach 1:
The electromagnetic shield is implemented as a thin conformal coating or flexible shell that closely follows the geometry of the detector array. This approach provides effective RF interference protection while adding minimal structural complexity and maintaining the compact, wearable form factor of the original device
Solution Approach 2:
The shield geometry is designed to replicate and follow the contours of the detector array elements, creating a customized shielding pattern that matches the specific layout of each detector element. This copying approach ensures optimal shielding effectiveness for each element without requiring a completely redesigned sensor structure
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 system provides accurate, non-invasive detection of analytes with reduced interference, enabling continuous or periodic monitoring of health parameters, enhancing patient comfort and reducing the complexity of measurement procedures.
Implementation Method 1
A non-invasive analyte sensor described herein includes a detector array having a plurality of detector elements (also referred to as antenna elements or antennas), at least one of which can transmit an electromagnetic signal in the radio or microwave frequency range and at least one of which can receive an electromagnetic signal
Implementation Method 2
at least one electromagnetic force (EMF) shield, also referred to as an electromagnetic shield, is provided on a component of the non-invasive analyst sensor to reduce and/or electromagnetically isolate a component of the analyte sensor from radio frequency interference and/or microwave frequency interference
Data Source
AI summary
A non-invasive analyte sensor that includes at least one electromagnetic shield at least partially electromagnetically isolates an electrical component of the non-invasive analyte sensor from radio frequency interference and/or microwave frequency interference.