05817091 is referenced by 390 patents and cites 33 patents.

An electrosurgical system having a visual indicator is provided. In a first embodiment, the electrosurgical system includes an active electrode coupled to a power supply for providing electrosurgical energy from the power supply to a tissue area and a return electrode separated from the active electrode, the return electrode being adapted to receive a current flowing through the tissue. The electrosurgical system further includes a lamp in electrical communication with the active and return electrodes, wherein the neon bulb is illuminated when the current flowing through the tissue exceeds a predetermined threshold. In a further embodiment, the electrosurgical system includes a second lamp illuminated when a voltage through the tissue is greater than a predetermined threshold. In another embodiment, a monopolar electrosurgical device includes a visual indicator for indicating conditions at an area of affected tissue. The visual indicator circuit includes a transformer having a secondary winding, a wire through the transformer forming the primary winding, a series resistor coupled in series with the secondary winding, and a type NE-2 neon bulb coupled in series with the series resistor, wherein the lamp is illuminated when the current through the wire is greater than a predetermined threshold.

Title
Electrosurgical device having a visible indicator
Application Number
8/859503
Publication Number
5817091
Application Date
May 20, 1997
Publication Date
October 6, 1998
Inventor
David C Yates
West Chester
OH, US
Paul C Nardella
Wareham
MA, US
Agent
Nutter McClennen & Fish
Assignee
Ethicon Endo Surgery
OH, US
Medical Scientific
MA, US
IPC
A61B 17/36
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