Ear Canal Optical Waveguide for Non-Invasive Glucose Sensing
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Solution Overview
Problem
Conventional methods for monitoring blood glucose levels, such as finger-pricking, are painful and cause anxiety, necessitating a non-invasive approach.
Innovation Solution
A hearing device with an integrated optical waveguide positioned in the ear canal to measure glucose levels in cerumen, utilizing light absorption to determine glucose concentration through an evanescent wave.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If finger-pricking method is used to measure glucose level, then glucose measurement can be obtained, but pain and anxiety are caused to the user
Solution Approach 1:
The patent replaces the mechanical finger-pricking method with an optical measurement system. An optical waveguide is positioned in the ear canal to illuminate cerumen and detect light absorption by glucose, thereby measuring glucose levels without mechanical penetration of the skin.
Solution Approach 2:
The patent uses cerumen (earwax) as an intermediary medium to access glucose levels. Instead of directly measuring blood glucose through finger-pricking, the system measures glucose concentration in cerumen, which contains glucose and provides indirect but accurate glucose level information.
2Ease of operation
If optical waveguide is positioned in ear canal to measure glucose in cerumen, then non-invasive glucose monitoring is achieved, but device complexity increases
Solution Approach 1:
The patent integrates multiple functions into the hearing device: it serves both as a hearing aid and as a glucose monitoring system. The optical waveguide, light source, and detector are added to existing hearing device components, allowing the device to perform both hearing enhancement and non-invasive glucose measurement.
Solution Approach 2:
The patent combines the glucose monitoring functionality with the hearing device structure. The optical waveguide is integrated into the hearing device housing, and the measurement process is combined with the device's normal operation in the ear canal, reducing the need for separate monitoring equipment.
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
Provides a non-invasive, regular, and efficient method for glucose monitoring, reducing pain and anxiety, and enabling better diabetes management with potential cost savings.
Implementation Method 1
an optical waveguide configured to be at least partially positioned within an ear canal of a user
Implementation Method 2
a first portion of the light may exit the optical waveguide at the sensing region and be absorbed by cerumen within the ear canal
Data Source
AI summary
An illustrative hearing system may include an optical waveguide at least partially positioned within an ear canal of a user and having a sensing region located between a first end and a second end of the optical waveguide. A light source may be configured to emit light into the optical waveguide at the first end, such that a first portion of the light may exit the optical waveguide at the sensing region and be absorbed by cerumen within the ear canal. A detector may be configured to detect a second portion of the light that exits the optical waveguide at the second end. A processing unit may be configured to determine, based on the second portion of the light detected by the detector and the light emitted by the light source, a glucose value representative of a glucose concentration in the cerumen.