Patent ID: 9700366
Date: 2017-07-11
CPC Classifications: A61B

Claim:
1. A polyphase electrosurgical system, comprising: a storage device configured to store digitized waveform data; an energy module including three digital to analog converters and three amplifiers, each digital to analog converter configured to receive the digitized waveform data, convert the digitized waveform data to a respective radiofrequency signal, and deliver the respective radiofrequency signal to a respective amplifier of the three amplifiers, wherein: an electrosurgical instrument having a housing and three distinct active electrodes extending externally from a distal end of the housing and disposed in spaced relation relative to each other, each distinct active electrode operably coupled to one of the respective outputs of the energy module, wherein each of the respective outputs is configured to deliver one of the provided respective radiofrequency signals to the respective distinct active electrode, each of the three distinct active electrodes defining an elongate shaft having a tapered distal tip configured to penetrate tissue; a tissue impedance sensor operatively coupled to at least one of the three distinct active electrodes and in communication with the energy module, the energy module configured to adjust the rate at which the digitized waveform data is converted by the digital to analog converters in response to a signal from the tissue impedance sensor; a return electrode operably coupled to the energy module and disposed in spaced relation to the electrosurgical instrument; and an actuator operably coupled to the energy module for activating the energy module.