Method and system for controlling delivery of energy to divide tissue

摘要

System and method for controlling delivery of energy to divide tissue are disclosed. The system comprises an electrosurgical instrument having an electrically energizable cutting element which communicates electrical energy to the tissue and a generator to supply the energy to the electrosurgical instrument which supplies the energy to the tissue in a first pulse to react the tissue, in slow pulses to create a desiccation line until impedance at the tissue has reached a threshold, and in rapid pulses to divide tissue across the desiccation line.

主权项

1. A system for controlling delivery of energy to divide tissue comprising:
an electrosurgical instrument having an electrically energizable electrode which communicates energy to the tissue; and a generator configured to supply the energy to the electrosurgical instrument which supplies the energy to the tissue in a first phase such that the energy is supplied at a continuous rate to pre-heat or seal the tissue until the tissue reaches a first predetermined threshold, in a second phase such that the energy is supplied at a first rate of pulsing to create a desiccation line until impedance at the tissue has reached a second predetermined threshold, and in a third phase such that the energy is supplied at a second rate of pulsing to divide the tissue across the desiccation line, the second rate of pulsing being greater than the first rate of pulsing, the generator including a sensor configured to monitor impedance of the tissue, wherein the energy is terminated at the first phase, second phase, or third phase when the impedance at the tissue has reached the first predetermined threshold, the second predetermined threshold, or the tissue is substantially divided.