Electrosurgical cutting and coagulation apparatus
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United States of America Patent
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-
Jan 4, 2000
Grant Date -
N/A
app pub date -
Dec 1, 1997
filing date -
May 31, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus and method of the current invention relate to electrosurgical work involving the forming of cuts in and coagulation of body tissue of a patient. The apparatus and method of the invention overcome disadvantages common with conventional dipolar and monopolar apparatus. In one aspect the invention provides a cutting tool or instrument with at least one cutting or coagulation tip and the tool is adapted to operate as both a power supply electrode to supply power to the tip and as a return electrode to allow impedance feedback signals to be received by a control means thereby eliminating the need for a separate second electrode and taking the patient out of the circuit received by a control means. According to a second aspect the feedback information is stored, processed and analysed in relation to pregrogrammed and previous actual feedback to allow alteration to the power supply to the tip to create optimum cutting and/or coagulating conditions.
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