EEG Electrode Cap with Radially Adjustable Resilient Sleeves
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional EEG systems are non-portable, require lengthy setup, and struggle with accurate electrode placement due to variations in head size and shape, lacking visual indicators for correct positioning and impedance verification.
Innovation Solution
A head-mountable EEG device with radially adjustable, resilient electrodes and visual feedback indicators, allowing for precise fitting and impedance monitoring, facilitating quick setup and use across various head sizes and shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional electrode caps are used to position EEG electrodes, then electrode positioning can be facilitated within a short period, but accurate positioning is compromised due to inability to account for variations in head sizes and shapes
Solution Approach 1:
The electrode cap incorporates adjustable elements that allow dynamic modification of the cap's dimensions and electrode positions to match individual head shapes and sizes, transforming a static cap into an adaptable positioning system that maintains both speed and accuracy
Solution Approach 2:
The system enables changing of physical parameters of the electrode cap including size, shape, and electrode orientation angles to optimize positioning accuracy for different head geometries while maintaining quick setup through controlled adjustment mechanisms
2Device complexity
If conventional electrode caps with fixed electrode positions are used, then the device structure is simple, but the cap cannot fit various head sizes and shapes accurately
Solution Approach 1:
The electrode cap is divided into multiple adjustable segments or modules that can be independently configured, allowing the cap to adapt to different head sizes and shapes while maintaining a relatively simple base structure that does not require complete redesign for each head type
Solution Approach 2:
The cap design incorporates universal adjustment mechanisms that enable a single cap structure to serve multiple head types and sizes, achieving versatility through standardized adjustable components rather than requiring multiple specialized caps
3Ease of operation
If skilled technicians perform electrode positioning without visual indicators, then positioning can be done, but the process is time-consuming and difficult to verify
Solution Approach 1:
Visual indicators are integrated into the electrode cap system to provide real-time feedback on electrode placement accuracy and impedance levels, enabling operators to quickly verify correct positioning without requiring extensive technical expertise or time-consuming manual verification
Solution Approach 2:
The system incorporates automatic impedance monitoring and visual guidance features that enable users to perform electrode positioning independently without requiring skilled technicians, reducing both setup time and operational complexity
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 a portable, easy-to-use EEG system for brain training and rehabilitation with improved signal quality and reduced setup time, suitable for both clinical and residential settings.
Implementation Method 1
Each resilient sleeve houses an individual electrode and is deformable. The deformation of the sleeve is such that a central axis passing through the individual electrode housed within the resilient sleeve is maintained in a position approximately normal to a plane tangential to a scalp portion positioned beneath that electrode.
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A head-mountable EEG electrode-containing device is provided based on radially adjustable electrodes to fit the wearer's unique head size and shape. The head-mountable device with an electrode array positioned therein includes multiple head-mountable device sections that are interconnected by mechanical fasteners to facilitate sizing and positioning of the head-mountable device. An array of resilient sleeves is positioned within each head-mountable device section. Each resilient sleeve houses an individual electrode and is deformable for self-orienting. The deformation of the sleeve is such that a central axis passing through the individual electrode housed within the resilient sleeve is maintained in a position approximately normal to a plane tangential to a scalp portion positioned beneath that electrode.