Implantable system for patients for electrical defibrillation of the heart, requiring such treatment

摘要

(57) Main plurality of electrodes (A50, B51), the power supply system is implanted to perform electrical cardioversion or defibrillation of the heart of a patient in need of such treatment [summary] is not (shown I a (inside (13) a) and a control circuit) not. It is desirable (c25) is also contains auxiliary electrode of at least one. The main plurality of electrodes (A50, B51), and is configured to deliver a defibrillation pulse along the current path which is pre-determined in the portion of the first heart (RV32), the current path heart I defines a weak field region the second part of the of (LV34) during. One auxiliary electrode 1 (C52) is configured to deliver a portion of the heart close to the primary shock field strength or minimum, the auxiliary pulse at least this. Is operatively coupled to (A50, B51), the auxiliary electrode main electrode and power (C52) and (not shown) to the control circuit, the control circuit, a weak field region through a (C52) auxiliary electrode have been configured to deliver a cardioversion sequence comprising a sufficient auxiliary pulse (not shown) to induce stop the propagation of the defibrillation pulse, a weak field region after the sending and sent out through the main electrode (A50, B51) to stop between the propagation of.