Physiological Electrode Pad with Water Absorption Unit
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Solution Overview
Problem
Conventional electrode pads for physiological signal detection are not air permeable, can cause allergies, and are uncomfortable due to non-breathability, leading to issues with electrical conduction, especially in dry conditions, and may short-circuit when placed close to each other.
Innovation Solution
A physiological signal detection device with water-absorbing and wet-keeping electrode pads, featuring a base layer, electrode pads, and a water absorption unit that prevents fast water loss, enhances wetting, and includes an edge enclosure band for positioning and comfort, reducing noise interference and improving conduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrode pads use non-air-permeable base layers and aqueous gel to maintain conductivity, then electrical conduction is improved, but user comfort deteriorates due to allergies and discomfort from poor breathability
Solution Approach 1:
The base layer is designed with porous structure that allows air permeability while maintaining the ability to hold conductive gel. The porous structure enables breathability to prevent allergies and discomfort, while still providing the necessary electrical conduction pathway for physiological signal detection
Solution Approach 2:
The electrode pad uses composite material structure combining base layer with conductive gel layer. The composite design allows the base layer to provide structural support and breathability, while the gel layer provides electrical conduction, achieving both comfort and reliability
2Reliability
If conventional electrode pads use base layer and aqueous gel to maintain humidity, then electrical conduction is improved, but reliability deteriorates in dry conditions due to fast water loss and gel drying
Solution Approach 1:
The base layer parameters are optimized to have appropriate porosity and water retention properties. By changing the physical parameters of the base layer material, it can slowly release moisture to keep the gel layer humidified, ensuring sustained electrical conduction even in dry environmental conditions
Solution Approach 2:
The base layer continuously provides moisture to the conductive gel through its porous structure, ensuring uninterrupted electrical conduction. This continuous moisture supply prevents gel drying and maintains reliable signal detection over extended periods
3Area of stationary object
If conventional electrode pads are placed close to each other on body surface, then detection coverage is improved, but reliability deteriorates due to contact between pads causing short-circuit
Solution Approach 1:
The electrode pad uses a flexible adhesive base layer that conformally attaches to the body surface. This flexible structure allows pads to be placed close together while maintaining proper spacing through body surface contours, preventing direct contact and short-circuits while maximizing detection coverage
4Strength
If conventional electrode pads use non-air-permeable base layer, then structural integrity is improved, but comfort deteriorates due to cracking of base layer in dry conditions
Solution Approach 1:
The base layer employs porous material that maintains structural integrity while allowing moisture retention. The porous structure prevents cracking by accommodating moisture content changes, ensuring long-term durability and sustained functionality in varying environmental conditions
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 device ensures consistent electrical conduction, enhances user comfort, and prevents short-circuits by maintaining humidity and providing secure attachment to the body surface, even in dry conditions, while reducing noise interference.
Implementation Method 1
a water absorption unit, which is positioned in the first receiving compartment... the water absorption unit has a top engaging the electrode pad, and the water absorption unit has a bottom engaging the base layer
Implementation Method 2
water absorbing and wet keeping functions are achieved, by which fast loss of water is prevented and wetting of the electrode pad is enhanced
Data Source
AI summary
A physiological signal detection device includes at least one electrode pad, a base layer, and at least one water absorption unit. The electrode pad is positioned on a top surface of the base layer. The electrode pad and the base layer form a first receiving compartment therebetween. The water absorption unit is positioned in the first receiving compartment. The water absorption unit has a top engaging the electrode pad, and the water absorption unit has a bottom engaging the base layer.