ECG Electrode Pad Coating Structure for Charge Noise Mitigation
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Solution Overview
Problem
Current ECG systems are bulky, require specialized training for accurate electrode placement, and are prone to delays and errors due to factors like body sweat and mechanical interference, which can compromise timely medical care, especially in emergency situations.
Innovation Solution
A portable electrode pad with integrated multi-lead ECG acquisition, featuring a polyester base substrate, carbon shielding layer, and conductive ink layers to mitigate charge accumulation, along with expandable extension members for proper electrode placement, ensuring quick and accurate ECG data acquisition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyester materials are used for printing electrode circuits, then the electrode pad provides good adhesion and comfort, but charge accumulation occurs due to triboelectrification which degrades signal quality
Solution Approach 1:
A conductive ink layer is introduced as an intermediary between the polyester substrate and the electrode circuit. This conductive layer serves as a mediator that prevents charge accumulation on the polyester surface while maintaining the adhesion and comfort properties of the polyester material. The conductive ink provides a pathway for charge dissipation, thereby eliminating the triboelectrification effect without sacrificing the beneficial properties of polyester.
Solution Approach 2:
The surface electrical properties of the polyester material are changed by applying a conductive coating. This parameter change transforms the polyester from an insulating material that accumulates charge to a material with controlled electrical conductivity that dissipates charge. The conductive ink layer modifies the electrical parameters of the polyester substrate, enabling charge dissipation while preserving mechanical and adhesive properties.
2Reliability
If traditional ECG systems are used, then comprehensive cardiac monitoring is achieved, but the system becomes bulky and requires specialized training for accurate electrode placement
Solution Approach 1:
Multiple electrode pads are integrated onto a single substrate, combining multiple ECG leads into one unified device. This merging eliminates the need for separate electrodes and complex wiring, reducing device complexity while maintaining comprehensive cardiac monitoring capabilities. The integrated design allows for simultaneous acquisition of multiple ECG leads from a single pad assembly.
Solution Approach 2:
The electrode pad substrate is designed to serve multiple functions: it provides mechanical support, ensures proper electrode placement through anatomical positioning guides, maintains skin contact for signal acquisition, and prevents charge accumulation. This multi-functional design eliminates the need for separate components, reducing overall system complexity while preserving ECG data accuracy.
3Productivity
If rapid ECG acquisition is needed for emergency situations, then response time is reduced, but placement errors and delays may occur due to lack of specialized training
Solution Approach 1:
The electrode pads are pre-positioned on the substrate according to standard anatomical landmarks for accurate ECG placement. This preliminary arrangement of electrodes in correct positions eliminates the need for operators to perform complex placement procedures during emergency situations. The pre-configured layout ensures measurement precision is maintained even when rapid acquisition is needed and specialized training is unavailable.
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 electrode pad enables rapid, reliable, and reproducible ECG data acquisition, reducing placement errors and delays, allowing for timely diagnosis and treatment, even in non-hospital settings, with enhanced signal quality and compatibility with various ECG devices.
Implementation Method 1
a carbon shielding layer on a bottom layer
Implementation Method 2
Polyester materials that are used for printing electrode circuits are prone to charge accumulation (due to triboelectrification) especially when rubbed against other fabrics or materials
Data Source
AI summary
An electrode pad and material structure are disclosed herein. The material structure is composed of a carbon shielding layer, a polyester base substrate positioned over the carbon shielding layer, a PEDOT coating layer on the polyester base substrate, and an acrylic top coating layer on the PEDOT coating layer. The structure mitigates the electrical charge accumulation on the polyester base substrate allowing for a clearer signal when acquiring an ECG.