Patent ID: 6893435
Filing Date: 2005-05-17
Classification: A61B

Abstract:
1. An electrosurgical generator comprising: a source of radio frequency (r.f.) energy; at least a pair of output terminals for connection to a bipolar electrosurgical instrument and for delivering r.f. energy from the source to the instrument; and a pulsing circuit for the source, wherein the pulsing circuit and the source deliver into a resistive load, when connected across the output terminals, an amplitude-modulated r.f. power signal in the form of a succession of pulses, with periods of at least 100 ms between successive pulses and a predetermined pulse mark-to-space ratio, the pulse mark-to-space ratio remains constant at a predetermined value over the entire succession of pulses from a beginning of application of r.f. energy to an end of application of r.f. energy, the r.f. power signal being of sufficient power so as to effect the electrosurgical coagulation of tissue.