VCSEL Glucose Monitoring Structure for Continuous Wearable Sensing
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Solution Overview
Problem
Existing wearable devices do not effectively manage diabetes by providing continuous and reliable monitoring of blood glucose levels, requiring users to manually forecast and manage their glucose levels due to the dynamic nature of blood glucose and insulin sensitivity to various factors.
Innovation Solution
A wearable electronic device incorporating a VCSEL with multiple active regions, quantum wells, and tunnel junctions, surrounded by p-n junctions, and featuring a housing that houses the VCSEL laser to measure and monitor glucose levels, utilizing a high contrast grating for optical confinement and tunability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual glucose forecasting and management is used, then users can manage their glucose levels, but the process is time-consuming and requires consistent user effort
Solution Approach 1:
The system enables automatic glucose level monitoring and forecasting without requiring manual user intervention. The VCSEL-based sensor continuously measures glucose levels in the finger sleeve, and the processor automatically forecasts future glucose levels based on the dynamic data, eliminating the need for users to manually track and manage their glucose levels throughout the day
Solution Approach 2:
The patent replaces manual mechanical monitoring methods with an optical sensing system. The VCSEL (vertical-cavity surface-emitting laser) uses light to detect glucose levels through optical absorption spectroscopy, substituting manual testing and forecasting with automated optical measurement and computational prediction
2Reliability
If continuous glucose monitoring is implemented, then real-time data is available for insulin therapy, but the device complexity increases
Solution Approach 1:
The finger sleeve device integrates multiple functions into a single wearable unit: it contains the VCSEL for optical sensing, the processor for data analysis and forecasting, and the interface for user interaction. This multi-functional integration provides continuous reliable monitoring while managing device complexity through consolidation rather than separate components
Solution Approach 2:
The system uses wavelength modulation of the VCSEL to detect glucose levels. By changing the optical wavelength parameter and measuring absorption at different wavelengths, the system achieves reliable glucose detection through spectral analysis, enabling continuous monitoring with a compact design
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 continuous and reliable monitoring of glucose levels, reducing the need for manual forecasting and enhancing diabetes management by providing real-time data for effective insulin therapy.
Implementation Method 1
a wearable electronic device with a VCSEL that measures or monitors a wearer's glucose
Implementation Method 2
utilizing a high contrast grating for optical confinement and tunability
Data Source
AI summary
A glucose detection or monitoring system that includes a VCSEL laser with one or more active regions having quantum wells and barrier. The active regions are surrounded by one or more p-n junctions. The one or more active regions can include a selected shape structure, and one or more tunnel junctions (TJ). One or more apertures are provided with the selected shape structure, one or more buried tunnel junctions (BTJ) or oxide confine apertured, additional TJ's, planar structures and or additional BTJ's created during a regrowth process that is independent of a first growth process with a VCSEL output determined in response to a monitoring application of the VCSEL, the VCSEL having an HCG grating and a bottom DBR. A housing of a wearable device interior houses the VCSEL laser.