Electrosurgical apparatus having compound return electrode
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United States of America Patent
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Jan 4, 2005
Grant Date -
Jan 16, 2003
app pub date -
Jun 18, 2002
filing date -
Jun 18, 2001
priority date (Note) -
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Abstract
Electrosurgical apparatus and methods for ablating, coagulating, shrinking, stiffening, or other treatment of a target tissue of a patient. An apparatus of the invention includes an electrosurgical probe, and an introducer needle adapted for passing the distal end of the probe therethrough, wherein the probe includes an uninsulated shaft which makes electrical contact with the introducer needle when the shaft is engaged within a lumen of the introducer needle. The apparatus further includes an active electrode and a return electrode, wherein the return electrode comprises the shaft in combination with the introducer needle. In one embodiment, the active electrode includes an expandable electrode head.
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