生体用電極へのイオン伝導性ポリウレタン系粘着剤の応用

抄録

A bioelectrode was constructed with the electrolyte from ion-conducting adhesives (ICA) which complexed a segmented polyether-urethane with LiClO₄. Electric characteristics and sticking properties of the electrode were examined. The following results were obtained. Impedance on a pair of electrodes was 0.53-1.45kΩ. Contact impedance to human skin was 18.5kΩ at 1kHz, 55.6kΩ at 10kHz and 156kΩ at 50kHz. Voltage on a pair of electrodes was ±1.0-±2.0mV. Stability for voltage on a pair of electrodes was 2-6μV. Change for voltage on a pair of electrodes by direct current was 48-50mV. These values were within the limits of the standard for disposable electrocardiogram (ECG) electrodes. The ICA showed tolerance for electrical load. Good adhesion and high safety to human skin were also ascertained. Based on these results, clinical applications of the ICA electrodes were attempted for ECG measurements and low-flequency current therapy. The results confirmed applicability of ICA to bioelectrodes for ECG and low flequency electrical stimulation devices.