Catherine R. Condie,Marshall L. Sherman,Corinne Weyrauch,Steven J. Fraasch,Trento Jay Rehberger
申请号：
US14677740
公开号：
US10143399B2
申请日:
2015.04.02
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A method and system for assessing electrode-tissue contact before the delivery of ablation energy. The method may generally include determining a difference between a maximum impedance magnitude at a low frequency for a given electrode and an absolute minimum impedance magnitude at the low frequency across all electrodes, determining a difference between a maximum impedance magnitude at a high frequency for a given electrode and an absolute minimum impedance magnitude at the high frequency across all electrodes, and determining a difference between a maximum impedance phase at the high frequency for a given electrode and an absolute minimum impedance phase at the high frequency across all electrodes. These differences may be correlated to one another using a linear model, the results of which determining whether the given electrode is in contact or not in contact with tissue.
