Intracardiac catheter, magneto-cardiographically localizable, for mapping and pacing provided with means for ablation of arrythmogenic tissue

摘要

A catheter (1) for intracardiac mapping, pacing biopsy and ablation of arrythmogenic tissue, comprises at its tip two non-polarizable, non-ferromagnetic electrodes (2, 3), arranged in such a way that an electromagnetic field of dipolar configuration can be generated in the heart by connecting them to an external current generator. The connection is done with twisted pairs of non-ferromagnetic conductors (4, 5) to avoid any other magnetic field along the catheter during cardiac pacing. With this assembly the tip of the catheter can be localized (and driven close to an arrhythmogenic target) by using the magnetocardiographic mapping method for three-dimensional localization and imaging. The catheter can be made of different kinds of non-thrombogenic, flexible, insulated, sterilizable material, with multiple parallel lumens (6..8; 9, 10) to allow fluid infusion, suction and/or introduction of ablation or biopsy devices.