Electrode assembly for an electrosurical instrument
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United States of America Patent
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-
Aug 21, 2001
Grant Date -
N/A
app pub date -
Mar 18, 1999
filing date -
Apr 3, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electrode assembly for electrosurgical removal of tissue immersed in an electrically conductive liquid has an elongate support structure including at least a pair of wire conductors for carrying radio frequency current, and a bipolar electrode assembly, extending transversely between the two conductors. The tip assembly has a ribbed transversely extending active electrode and a smooth-surfaced transversely extending return electrode mounted on opposite faces of a ceramic insulator body. The electrodes comprise metallic plates on the insulator body, the surface area of the active electrode being between 1.25 to 2 times that of the return electrode. To provide for endoscope mounting, the wire conductors are secured to a spring chip for detachable mounting to the telescope tube of an endoscope.
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