Method for reducing the polarization of bioelectrical stimulatio

Details Method for reducing the polarization of bioelectrical stimulatio Method for reducing the polarization of bioelectrical stimulatio

1992-10-15

1994-07-05

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204434, 204140, 2041415, 204153, G01N 2726

Patent

active

053264487

ABSTRACT:
A method is disclosed for greatly reducing pacing polarization of a porous platinum bioelectrical stimulation electrode substrate by applying an oscillating current to the electrode substrate while it is immersed in an electrolyte such as a sodium sulfate solution to electrochemically cause the formation of a thick, highly porous platinum hydrous oxide surface layer on the substrate. The surface layer is then slowly reduced to platinum, while maintaining an increased surface area structure therein, using a similar electrochemical process employing much lower levels of current. This method does not alter the electrode characteristics other than to increase the microsurface area. The reduced polarization follows from the known inverse relationship between microsurface area and polarization. An electrode made by the foregoing method is also disclosed.

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