Electrosurgical device and methods

A method of operating a tissue segmentation device, the method comprising:

• using a voltage sensor to monitor root-mean-square voltage (Vrms) values of at least one electrode of the tissue segmentation device;
• using a current sensor to monitor root-mean-square current (Irms) values of the at least one electrode of the tissue segmentation device;
• using a controller comprising a processing component, the processing component configured to controlling a power output to the at least one electrode, responsive to the Vrms and Irms values respectively monitored by the voltage sensor and the current sensor;
• and
• adjusting the power output to the at least one electrode to apply a substantially constant force to tissue being segmented by the at least one electrode of the tissue segmentation device.

An electrosurgical device including a circuit and a controller having programmed instructions stored in a non-transitory computer readable media, the programmed instructions being configured to:

• obtain from a voltage sensor a root-mean-square voltage (Vrms) associated with power applied to the electrosurgical device;
• obtain from a current sensor a root-mean-square current (Irms) associated with the power applied to the electrosurgical device;
• obtain from a power sensor a real power Preal being delivered to the electrosurgical device;
• determine a threshold value T;
• calculate a power factor PF=Preal/(Vrms*Irms) of the power applied to the electrosurgical device;
• and
• assign a circuit status to the circuit of the electrosurgical device,
• wherein:
• IF (PF≈0) and ((Vrms/Irms)≥T), THEN the circuit status is “open”, and
• IF (PF≈0) and ((Vrms/Irms)<T), THEN the circuit status is “short”.