Electrosurgical device

Details Electrosurgical device Electrosurgical device

A - Human Necessities

61

B

326/15

A61B 18/16 (2006.01)

Patent

CA 1079811

Abstract of the Disclosure The present invention relates to a radio-frequency electrosurgical device which includes an active electrode, a passive electrode, and a device for generating a radio-frequency potential. The generating device induces the radio-frequency potential on a primary winding of an isolation transformer. The secondary winding of the isolation transformer powers the active electrode. One end of the secondary winding of the isolation transformer is coupled to a return lead connected to the passive electrode and also is coupled to ground through a primary winding of a second transformer. If the passive electrode is disconnected from the return line, there can be an alternate radio-frequency current return path to ground, and a potential is developed across the primary winding of the second transformer. This potential is used to energize a relay to actuate an alarm and to disable the radio-frequency generator if the passive electrode becomes disconnected.

240630

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