Patent ID: 6197023
Filing Date: 2001-03-06
Classification: A61B

Abstract:
Apparatus for catheter ablation, comprising:an ablation catheter,associated with said catheter, a connection to a high frequency generator and to controlled or regulated high frequency ablation equipment,said catheter having at least one electrode for ablation of tissue by irradiation of ablating power, and at least one temperature sensor associated with said at least one electrode for sensing temperature of said at least one electrode, anda sensing device that senses a predetermined parameter that is related to and takes into account a temperature difference between temperature measured at said electrode and temperature in tissue in the vicinity of said electrode, wherein:said at least one electrode is driven by energy pulses, depending on previous electrode temperature, delivered energy, and said predetermined parameter sensed by said sensing device, said energy pulses being of fixed or variable length, such that a temperature that can be set in advance is substantially reached in tissue to be ablated, and said at least one electrode temperature does not exceed a predetermined temperature.