ELECTROSURGICAL APPARATUS WITH LOW WORK FUNCTION ELECTRODE
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United States of America Patent
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Issued Date -
Apr 5, 2012
app pub date -
Oct 4, 2010
filing date -
Oct 4, 2010
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Abandoned
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Abstract
An electrosurgical apparatus includes an active electrode with a low-work function coating to improve ablation performance. Low-work function coatings include compounds of alkali metals and alkali earth metals. Additionally, the active electrode may include various micro-structures or asperities or nano-structures or asperities. An array of carbon nanotubes may be aligned and secured on the active electrode. A return electrode comprises a high-work function coating to suppress electrical discharge activity on the return electrode.
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