Electrode Carrier Gel Delivery for Reliable Scalp Placement Through Hair
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Solution Overview
Problem
Existing EEG electrode placement methods are time-consuming and require specialized training, and they fail to maintain effective conductive gel contact with the skin surface, especially in the presence of hair, without manual preparation.
Innovation Solution
An electrode carrier system with conductive tubular members and a reservoir containing a compressible conductive fluid or gel, which allows for easy placement and maintains contact with the skin surface, even through hair, using visual or haptic indicators for confirmation and incorporating motion tracking for patient comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive gel is applied manually to the skin surface for electrode contact, then electrical conduction is improved, but the placement process becomes time-consuming and requires specialized training
Solution Approach 1:
The conductive gel is pre-loaded into reservoirs that are integrated with the electrode assemblies before patient contact. This preliminary preparation eliminates the need for manual gel application during the placement process, reducing both placement time and the need for specialized training while maintaining reliable electrical conduction.
Solution Approach 2:
The electrode assembly with integrated reservoir automatically dispenses the conductive gel onto the skin surface when placed against the patient's scalp. The system serves itself by incorporating the gel delivery mechanism directly into the electrode structure, eliminating the need for separate manual gel application steps.
2Reliability
If conductive gel interface is used for electrode contact, then electrical conduction is improved, but the gel becomes ineffective when hair is present requiring manual hair removal
Solution Approach 1:
The conductive gel acts as an intermediary substance that is delivered directly to the skin surface through the tubular members, creating an effective conductive path between the electrode and the scalp even through hair. This mediator approach allows the gel to penetrate and establish contact without requiring manual hair removal.
Solution Approach 2:
The invention extracts the gel delivery function from the traditional manual application process and integrates it directly into the electrode assembly structure. The gel is contained within reservoirs and delivered through tubular members that position it precisely at the electrode-skin interface, separating the gel delivery mechanism from manual操作步骤.
3Productivity
If on-board conductive gel dispenser is incorporated into EEG electrodes, then placement speed is improved, but gel preservation for extended time periods becomes problematic
Solution Approach 1:
The electrode assemblies with integrated gel reservoirs are designed as disposable units. The gel is sealed within the reservoir structure, allowing the electrodes to be manufactured with built-in dispensers while maintaining gel stability for extended periods. After use, the entire assembly including the gel is discarded, eliminating the need for long-term gel preservation.
Solution Approach 2:
The conductive gel is nested within sealed reservoirs that are integrated into the electrode assembly structure. This nested configuration protects the gel from environmental factors during storage and transport, maintaining its properties for extended periods while enabling rapid deployment when needed.
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
Facilitates rapid and reliable electrode placement with consistent skin contact, reduces the need for manual hair removal, and enhances patient comfort by allowing movement and monitoring.
Implementation Method 1
a reservoir having a compressible structure and containing a conductive fluid or gel
Data Source
AI summary
An electrode carrier system includes one or more electrode assemblies having an electrode body. One or more tubular members extend from the electrode body and define a lumen terminating in a distal opening. The electrode assemblies carry a reservoir containing a conductive fluid or gel. The reservoir is in fluid communication with the lumens in the tubular members, and the electrode assemblies are typically supported on a backing which may optionally be configured as a headband. Systems are for tracking patient movement may be used in combination with the electrode carrier system.