Electrosurgical medical system and method

Details Electrosurgical medical system and method Electrosurgical medical system and method

2011-07-12

2011-07-12

Peffley, Michael (Department: 3739)

Surgery

Instruments

Electrical application

C606S039000, C606S040000

Reexamination Certificate

active

07976540

ABSTRACT:
A medical device system and method provide an RF electrosurgical generator coupled to an electrosurgical electrode via a patient box disposed in close proximity to the patient. An RF signal is delivered from the generator to the patient box where signal power is increased and the RF signal delivered to the electrosurgical electrode. The patient box is coupled to the electrosurgical electrode by a short cable capable of carrying an HV, high frequency 5 MHz signal without leakage. An electrical characteristic associated with the electrosurgical electrode is monitored and a desired RF power output and duty cycle maintained by adjusting DC input voltage applied to an RF amplifier, responsive to the monitoring. The system determines when the electrosurgical cutting electrode has started cutting and switches from a start mode to a run mode having a different RF duty cycle and a reduced RF power output controlled by a servo system.

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