Catheter with cryogenic and electrical heating ablation
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United States of America Patent
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Dec 27, 2011
Grant Date -
Aug 11, 2011
app pub date -
Apr 18, 2011
filing date -
Dec 9, 1999
priority date (Note) -
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Abstract
A catheter includes a cryoablation tip with an electrically-driven ablation assembly for heating tissue. The cryoablation tip may be implemented with a cooling chamber through which a controllably injected coolant circulates to lower the tip temperature, and having an RF electrode at its distal end. The RF electrode may be operated to warm cryogenically-cooled tissue, or the coolant may be controlled to conductively cool the tissue in coordination with an RF treatment regimen.
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