Ear-Worn Dry Electrodes for Motion-Robust ECG Monitoring
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Solution Overview
Problem
Existing physiological monitoring systems fail to accurately and conveniently capture a wide range of physiological signals during strenuous physical activity without requiring skin preparation or attachment, leading to noisy and inaccurate data.
Innovation Solution
A head-mounted monitoring system using dry electrophysiological sensors anchored at natural body points, such as the ears and head, combined with novel signal processing, to acquire clean ECG and EOG signals, and integrate with wearable devices for data transmission and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional physiological monitoring systems use sensors that require skin preparation or attachment, then signal quality may improve, but ease of operation and convenience deteriorate
Solution Approach 1:
The patent replaces traditional mechanical sensor attachment systems (requiring adhesives, electrodes, skin preparation) with optical sensing technology. The system uses optical sensors to detect physiological signals through the skin without mechanical attachment, eliminating the need for skin preparation, adhesives, or electrode gels while maintaining signal quality.
Solution Approach 2:
The patent introduces optical light as an intermediary medium to transmit physiological information. Instead of direct electrical contact through electrodes, the system uses optical sensors to detect physiological signals through the skin, with light serving as the intermediary carrier that penetrates tissue and carries biological information without requiring skin preparation or adhesive attachment.
2Measurement precision
If systems require large degrees of preparation and securing of sensors, then signal accuracy may improve, but device complexity and preparation time increase
Solution Approach 1:
The patent replaces complex mechanical sensor securing systems (adhesives, electrodes, preparation protocols) with a simple optical sensing mechanism. The optical sensors can be placed on the skin without requiring adhesives or electrical preparation, dramatically reducing setup complexity while maintaining signal accuracy through non-contact optical detection.
Solution Approach 2:
The patent eliminates the need for preliminary skin preparation actions (abrasion, cleaning, gel application) by using optical sensing that works through intact skin. The system performs no preliminary preparation required by traditional electrical sensors, allowing immediate placement and operation.
3Reliability
If systems use traditional sensor attachment methods, then electrical signal acquisition may be reliable, but ease of operation during physical activity deteriorates
Solution Approach 1:
The patent replaces electrical sensor systems that require secure mechanical attachment with optical sensing technology. The optical sensors detect physiological signals through the skin without requiring adhesive bonding or electrical contact, allowing the device to remain comfortable and secure during strenuous physical activity while maintaining signal reliability.
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 robust, high-quality physiological data with enhanced comfort and convenience, enabling continuous monitoring during physical activity with reduced power requirements and social stigma.
Implementation Method 1
an optical sensor for detecting a physiological signal from the subject
Data Source
AI summary
Earphone apparatus includes dry electrophysiological electrodes and, optionally, other physiological and/or environmental sensors to measure signals such as ECG from the head of a subject. Methods of use of such apparatus to provide fitness, health, or other measured or derived, estimated, or predicted metrics are also disclosed.