Pulse control circuit and method for electrosurgical units

Details Pulse control circuit and method for electrosurgical units Pulse control circuit and method for electrosurgical units

H - Electricity

03

K

326/15

H03K 7/08 (2006.01) A61B 18/12 (2006.01)

Patent

CA 1064581

Pulse Control Circuit and Method for Electrosurgical Units Abstract: A control circuit for electrosurgical units establishes a particular output signal to patient electrodes in response to condition of the patient electrodes. The duty cycle of the output signal is reduced when the patient electrodes are not in contact with the patient so as to prevent unwanted cutting and the duty cycle is increased when both patient electrodes are in contact with the patient so as to maximize the coagulation effect. The invention includes method of adjusting coagulation power by varying the duty cycle and not the amplitude of the output signal.

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