Method for activating a pyrocarbon electrode tip
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United States of America Patent
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Jan 22, 1985
Grant Date -
N/A
app pub date -
Aug 6, 1982
filing date -
Aug 7, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pyrocarbon tip for a cardiac stimulator electrode is subjected to an anodic electrolytic treatment in which a strong, concentrated acid with oxidizing properties, or a mixture of two or more such acids, is used as the electrolyte. The treatment is carried out with a voltage greater than 1 V, preferably between 1 and 20 V, and with a current density greater than 3 mA/mm.sup.2, preferably between 30 and 40 mA/mm.sup.2. Pyrocarbon tips treated in this manner have very low bias voltages in use.
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