Conductive foam material

The conductive foam, made from a conductive polymer and elastomer mixture integrated with a polymer foam, addresses the limitations of existing electrode materials by providing high conductivity and elasticity, enhancing comfort and durability for long-term biosignal monitoring.

WO2025093781A1 Publication Date: 2025-05-08POLYMER BIONICS LTD
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Patent Information

Application Number
PCT/EP2024/085168
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-12-06
Filing Date
2024-12-06
Publication Date
2025-05-08

AI Technical Summary

Technical Problem

Existing conductive materials for electrodes in healthcare settings are either rigid, cause skin irritation, require conductive gels, or suffer from delamination issues, limiting their use for long-term monitoring and comfort.

Method used

A conductive foam material composed of a mixture of conductive polymer and elastomer, integrated with a polymer foam, which provides high conductivity and elasticity without the need for skin preparation or conductive gels.

Benefits of technology

The conductive foam offers high conductivity and durability, reducing delamination and skin irritation, and enabling comfortable long-term use as a dry electrode for biosignal monitoring.

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Abstract

A conductive foam comprises (i) a conductive polymer composition comprising a mixture of conductive polymer and elastomer, adsorbed onto (ii) a polymer foam. The conductive foam has conductivity and impedance suitable for use as an electrode for monitoring human body functions and delivering stimulation thereto. The conductive foam is made, e.g. using an elastomer and a foam of the same polymer, by providing the polymer foam, providing a solution of the conductive polymer composition in a solvent, applying the solution onto the polymer foam and removing solvent to yield a dry, conductive foam.
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