Electrosurgical system with means for measuring tissue permittivity and conductivity

摘要

Phase end point determination is provided to automatically halt the application of energy to tissue. Prior to the application of energy, the phase end point is determined based on the product of permittivity and conductivity of the tissue to be treated. An electrosurgical system (2) can include an electrosurgical generator (12), a feedback circuit (20) or controller and an electrosurgical tool (40). The feedback circuit can provide an electrosurgery end point by determining the phase end point of a tissue to be treated. The electrosurgical system can include more than one electrosurgical tool for different electrosurgical operations and can include a variety of user interface features and audio/visual performance indicators (42, 44, 46). The electrosurgical system can also power conventional bipolar electrosurgical tools and direct current surgical appliances.