Method and apparatus for creating a virtual electrode used for the ablation of tissue
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United States of America Patent
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Dec 24, 2002
Grant Date -
Feb 14, 2002
app pub date -
Jul 11, 2001
filing date -
Jul 7, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for creating a virtual electrode to ablate bodily tissue. The surgical apparatus includes an inner tube and an outer tube. The inner tube defines a proximal portion and a distal portion. The distal portion forms an orifice for distributing a conductive solution from the inner tube and further forms an electrode. The outer tube coaxially receives the inner tube such that the outer tube is slidable relative to the inner tube. With this configuration, the outer tube selectively blocks flow of conductive solution from the orifice. During use, conductive solution distributed from the orifice is subjected to a current from the electrode, thereby creating a virtual electrode.
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