Conductive Rubber Bioelectrode Processing for Low Polarization Noise
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional bioelectrodes made of highly electrically conductive metals suffer from poor adhesion to the skin, require additional gels or pastes for signal detection, and experience variations in polarization voltage due to ion accumulation and noise, making them unsuitable for repetitive use and stable measurement.
Innovation Solution
A bioelectrode production method involving an electrically conductive rubber body with silicone rubber and silver powder, immersed in an inorganic salt-containing solution at controlled temperatures and pressures, enhancing ion penetration and reducing potential variation noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If highly electrically conductive metals are used for bioelectrodes, then electrical conductivity is improved, but adhesion to the skin deteriorates
Solution Approach 1:
The patent applies composite materials by combining highly electrically conductive metals with adhesive materials to create a bioelectrode that achieves both high electrical conductivity and strong adhesion to the skin. The composite structure allows the metal component to provide electrical conductivity while the adhesive material component provides bonding strength to the skin surface.
2Reliability
If highly electrically conductive metals are used for bioelectrodes, then electrical conductivity is improved, but the need for additional gels or pastes increases
Solution Approach 1:
The patent merges the functions of electrical conductivity and skin adhesion into a single integrated bioelectrode structure. By combining the highly electrically conductive metal with adhesive material, the invention eliminates the need for separate gels or pastes that would otherwise be required to achieve both conductivity and adhesion, thereby reducing device complexity.
3Strength
If adhesive materials are used to improve skin adhesion, then adhesion is improved, but accumulation of ions and noise increase
Solution Approach 1:
The patent uses composite materials where the highly electrically conductive metal component provides a low-impedance electrical pathway that reduces ion accumulation and associated noise. The adhesive material ensures good skin contact while the metal component maintains signal quality by minimizing polarization effects and electrical noise.
4Stability of the object's composition
If silver chloride is used to suppress polarization voltage variation, then polarization voltage stability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent changes the material parameter from silver chloride to highly electrically conductive metals, which inherently provide low electrical impedance and stable polarization voltage characteristics. This parameter change simplifies the manufacturing process by eliminating the need for silver chloride deposition while maintaining or improving electrical stability.
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 method improves adhesion, reduces noise and polarization voltage variations, enabling stable and repetitive bioelectrode performance without the need for additional gels or pastes, while being cost-effective and safe for use.
Implementation Method 1
immersing the electrically conductive rubber body in an inorganic salt-containing solution at 70° C. or more and 180° C. or less
Data Source
AI summary
A method is provided for producing a bioelectrode capable of reducing potential variation noise due to a polarization voltage. The method for producing the bioelectrode comprises forming an electrically conductive rubber body containing a silicone rubber and a silver powder, and immersing the electrically conductive rubber body in an inorganic salt-containing solution at 70° C. or more and 180° C. or less.