Wearable Sensor Adhesive Polymer Composition for Signal Quality

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Solution Overview

Problem

Current techniques for monitoring human brain activity non-invasively are highly susceptible to motion artefacts, making it difficult to obtain good quality ambulatory brain recordings without restricting the wearer's movements.

Innovation Solution

A wearable sensor with an adhesive polymer composition comprising a silicone polymer and an amine-based polymer, which improves connectivity between the sensor and skin, enhancing the quality of sensed signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If current monitoring techniques are used, then brain activity can be monitored non-invasively, but motion artefacts severely degrade signal quality

Engineering Contradiction:

Improvesignal qualityVSAvoidmotion artefacts

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an adhesive layer as an intermediary between the sensor electrode and the skin. This adhesive layer improves mechanical coupling and electrical contact, thereby reducing motion artefacts and enhancing signal quality during ambulatory recording.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent employs a composite adhesive composition comprising multiple materials (e.g., silicone polymer, pressure-sensitive adhesive, conductive materials) to achieve both strong mechanical adhesion and good electrical conductivity, thus simultaneously addressing mechanical stability and signal quality.

Inventive Principle:

Principle #40Composite materials

2Productivity

If the adhesive is applied and removed multiple times, then the sensor can be reused, but adhesive properties deteriorate

Engineering Contradiction:

Improvesensor reusabilityVSAvoidadhesive strength

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent designs the adhesive layer to be recoverable after use, allowing the sensor to be cleaned and reapplied multiple times while maintaining adequate adhesive properties for continued reliable use.

Inventive Principle:

Principle #34Discarding and recovering

3Reliability

If the adhesive provides strong binding to skin, then signal quality improves, but skin comfort and ease of removal worsen

Engineering Contradiction:

ImproveconnectivityVSAvoidease of removal

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent adjusts the physical and chemical parameters of the adhesive (such as viscosity, elasticity, adhesive strength) to achieve an optimal balance between strong skin adhesion for signal quality and sufficient ease of removal for user comfort.

Inventive Principle:

Principle #35Parameter changes

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 adhesive polymer composition provides a strong, skin-friendly adhesion that remains effective even after multiple applications and cleanings, reducing motion artefacts and improving the reliability of brain activity monitoring.

Implementation Method 1

the adhesive will adhere well to a user's skin

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS20250134434A1Wearable sensor having an adhesive, and a manufacturing method

Publication Date: 2025.05.01 OCCAM BCI INC

AI summary

A skin-conformable and compact wearable sensor for monitoring surface physiological and/or surface brain signals of the wearer. The wearable sensor comprises a polymer adhesive. The adhesive polymer composition may include a silicone polymer and an amine-based polymer. The adhesive polymer composition may include from 1 to 10 wt. % amine-based polymer by weight of the adhesive polymer composition.