EEG Headset Electrode Holder with Adjustable Depth and Interchangeable Sensors
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Solution Overview
Problem
Existing EEG headsets face issues with electrode durability, user comfort, and setup time due to permanent electrode attachment, tight fitting, and the need for conductive gels, which can be messy and require trained personnel.
Innovation Solution
A headset with removably secured electrodes and adjustable electrode holders that accommodate different sizes, allowing for customizable placement and easy replacement, reducing discomfort and setup time, and using a cap with integrated wires to minimize external interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrodes are permanently attached to the headset, then signal quality is maintained, but electrode durability decreases and setup time increases
Solution Approach 1:
The electrode assembly is divided into separate components: the electrode itself and the headset structure. The electrode can be removed and replaced independently from the headset, allowing for quick replacement of malfunctioning electrodes without replacing the entire headset. This segmentation enables maintenance of signal quality through proper electrode placement while reducing setup time through easy electrode replacement.
Solution Approach 2:
The patent employs conductive adhesive as a removable attachment mechanism that provides sufficient electrical contact for signal quality while allowing easy removal and replacement. The adhesive creates a temporary bond that maintains electrode position during use but can be quickly removed when electrode replacement is needed, thus resolving the contradiction between maintaining reliable signal quality and enabling quick setup/replacement.
2Reliability
If the headset is tightly fitted to ensure electrode contact, then signal quality improves, but user comfort deteriorates
Solution Approach 1:
The pressure application is localized to specific electrode contact points rather than distributing tight pressure across the entire head. Each electrode creates a focused contact point with the scalp using conductive adhesive, ensuring good electrical contact for signal quality while avoiding the need for tight overall headset fitting, thus maintaining user comfort.
Solution Approach 2:
Conductive adhesive serves as an intermediary between the electrode and the scalp, creating reliable electrical contact without requiring mechanical pressure from a tight headset fit. The adhesive mediates the contact interface, providing sufficient conductivity for signal quality while eliminating the need for uncomfortable tight fitting.
3Reliability
If conductive gels are used to improve electrode contact, then signal quality improves, but ease of operation worsens due to messiness and requirement for trained personnel
Solution Approach 1:
The patent employs conductive adhesive in a disposable or easily replaceable form that eliminates the messiness and complexity of traditional conductive gels. The adhesive can be applied in a controlled manner and removed cleanly, requiring no special training. This resolves the contradiction by providing reliable electrical contact (signal quality) through a user-friendly application process (ease of operation).
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 solution enhances user comfort, reduces setup time, and improves signal quality by allowing adjustable electrode placement and easy replacement of malfunctioning electrodes, while maintaining effective EEG data collection.
Implementation Method 1
EEG data is typically measured using a plurality of electrodes disposed on or near the scalp of a person to measure voltage fluctuations resulting from this electrical activity within the neurons of the brain
Data Source
AI summary
Example headsets and methods for gathering electroencephalographic signals are disclosed herein. An example headset disclosed herein includes a cap to be worn on a head of a person and a first electrode carried by the cap. The first electrode holder defines a first opening therethrough. The example headset includes a first electrode that insertable into the first opening. The first electrode has a first length and is adjustable in the first opening to a first plurality of discrete positions having different depths of insertion relative to the first opening. The first electrode is to engage the head of the person when inserted a sufficient depth into the first opening. The example headset also includes a second electrode that is interchangeable with the first electrode and insertable into the first opening. The second electrode has a second length, greater than the first length, and is adjustable in the first opening to a second plurality of discrete positions having different depths of insertion relative to the first opening. The second electrode is to engage the head of the person when inserted a sufficient depth into the first opening.