Mesh Electrode Pad for Stable ECG Signal Detection
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Solution Overview
Problem
Existing electrode pads for living organisms struggle to maintain stable contact with the skin during body motion, leading to fluctuations in polarization potential and impedance, which interfere with the measurement of electrocardiographic signals.
Innovation Solution
A mesh-like electrode pad with a conductive gel sheet that extends and contracts to maintain contact with the skin, reducing fluctuations in polarization potential and impedance, and a soft protective sheet that allows the electrode and gel to deform with skin motion, ensuring continuous signal detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a hard electrode is used to detect electrocardiographic signals, then the electrode structure is simple and easy to manufacture, but the electrode cannot follow skin movement, causing partial separation or close contact that leads to great fluctuations in polarization potential or impedance
Solution Approach 1:
The patent transforms the static hard electrode into a dynamic flexible electrode that can adapt its shape and position. The electrode is constructed from flexible conductive materials and arranged in a mesh-like pattern that allows it to deform and follow skin movements, maintaining reliable electrical contact while preserving manufacturing simplicity.
Solution Approach 2:
The patent employs flexible conductive materials and thin film structures to create an electrode that can conform to skin contours and movements. The mesh-like arrangement of flexible conductive elements allows the electrode to stretch and deform with skin motion without breaking electrical contact, resolving the contradiction between structural simplicity and measurement reliability.
2Stability of the object's composition
If the electrode partially separates from or comes close to the skin surface during body motion, then the electrode structure remains rigid and simple, but this causes great fluctuations of polarization potential or impedance that interrupt signal measurement
Solution Approach 1:
The patent applies dynamics by making the electrode flexible rather than rigid, allowing it to adapt to skin movements. The flexible mesh structure maintains stable electrical contact during body motion, preventing fluctuations in polarization potential and impedance, thereby ensuring continuous and precise signal measurement while preserving structural integrity.
Solution Approach 2:
The patent changes the physical parameters of the electrode by using flexible conductive materials with appropriate mechanical properties. The mesh-like structure with specific wire diameter and spacing allows the electrode to deform elastically with skin motion, maintaining consistent electrical contact and measurement precision while preserving structural stability.
3Reliability
If a mesh-like electrode is used to follow skin motion, then the electrode can maintain contact during body movement, but the electrode structure becomes more complex
Solution Approach 1:
The patent segments the electrode into a mesh-like structure composed of multiple conductive elements arranged in a grid pattern. This segmentation allows each element to move independently with skin contours while maintaining overall electrical continuity, achieving reliable continuous contact with reduced structural complexity compared to a solid flexible electrode.
Solution Approach 2:
The patent employs a mesh-like porous structure that allows the electrode to conform to skin surface irregularities and movements. The open mesh structure reduces material usage and structural complexity while maintaining electrical contact through multiple contact points, achieving reliable continuous skin contact during body motion.
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 effectively suppresses body-motion noise, allowing for stable and uninterrupted measurement of electrocardiographic signals by maintaining consistent contact with the skin and reducing impedance fluctuations.
Implementation Method 1
the conductive gel of the conductive gel sheet permeating through the mesh of the electrode and contacting the electrode with sufficient area by contacting many parts of a surface of the conductive material forming the mesh
Implementation Method 2
the mesh-like electrode extends along the surface of the skin with a sufficient area and contacts the surface of the skin directly, and detects and outputs an electric signal while deforming, expanding or contracting by flexibly following the motion of the surface of the skin
Data Source
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Figure 3(a)~3(b)
AI summary
[Problem] To provide an electrode pad, for use on a living organism, that can measure an electrocardiographic signal without being hindered by body-motion noise. [Solution] An electrode pad, for use on a living organism, that is attached to the skin of said living organism, detects an electrical signal, and supplies said electrical signal to an electrocardiograph. Said electrode pad for use on a living organism is characterized by the provision of a mesh-like electrode that extends along the skin, a conductive gel sheet that is layered on top of the electrode and extends along the surface of the skin, and a soft protective sheet that covers the layered electrode and conductive gel sheet.