Electrosurgical hemostatic device with recessed and/or offset electrodes
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United States of America Patent
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Nov 18, 1997
Grant Date -
N/A
app pub date -
Jan 18, 1995
filing date -
Jul 22, 1993
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An electrosurgical instrument is provided for cauterization and/or welding of tissue of varying impedances, thicknesses and vascularity especially in the performance of endoscopic procedures. The instrument compresses the tissue between an electrode associated with a first pole of a bipolar energy source located on one interfacing surface off a first element, and a second interfacing surface of a second element. The first and second elements are used to engage and compress tissue between the first and second interfacing surfaces. A second electrode associated with a second pole is located one of the two interfacing surfaces. The first electrode is either recessed into the first tissue contacting surface and/or offset from the second electrode on the same or opposing surfaces. A preferred application of the invention is in a cutting instrument wherein a hemostatic line is formed along a cut line using RF energy.
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