Patent ID: 9060778
Filing Date: 2015-06-23
Classification: A61B

Abstract:
1. A method of detecting a short circuit during a radiofrequency ablation procedure, comprising: transmitting radiofrequency ablation energy to a pair of electrodes in at a monopolar and a bipolar mode, the radio frequency ablation energy being transmitted between at least one of a pair of electrodes coupled to a treatment assembly of a medical device when the radiofrequency ablation energy is transmitted in bipolar mode and between an electrode coupled to the treatment assembly of the medical device and a reference electrode when the radiofrequency ablation energy is transmitted in unipolar mode; wherein the transmitting of radio frequency ablation occurs at a ratio of bipolar mode to unipolar mode; measuring an impedance value of the pair of electrode for each of the energy modes; comparing the measured impedance value measured at each of the energy modes to a predetermined threshold impedance after the radiofrequency ablation energy has been transmitted for a predetermined period of time; and continuing the transmitting radiofrequency ablation energy if the measured impedance value in either of the electrodes in the pair of electrodes is above the predetermined threshold impedance and terminating the transmission of radiofrequency ablation energy and generating an alert indicating a short circuit between the pair of electrodes if the measured impedance in either of the electrodes in the pair of electrodes is below the predetermined threshold impedance value, the predetermined threshold value based on the ratio of radiofrequency ablation transmitted in the bipolar mode to radiofrequency ablation energy transmitted in the unipolar mode.