Endocardial pacing devices and methods useful for resynchronization and defibrillation

摘要

According to one aspect, various methods and apparatus are used for treating a condition of a patient's heart, and for monitoring cardiac operation. In one approach consistent therewith, an electrode arrangement is placed in a right ventricle of the heart. The electrode arrangement is used to capture the myocardium for re-synchronization of the left and right ventricles by providing first and second signal components having opposite polarity on respective electrodes. The electrode arrangement is connected to an implantable CRM device that has the capability of pacing/sensing atrium, pacing/sensing ventricles, and deliver defibrillation therapy from the right side of the heart. The CRM device captures ventricular contractions to treat conduction abnormalities in one or more of the ventricles.

主权项

1. An implantable medical device for providing cardiac defibrillation and single-chamber pacing therapies, the implantable medical device comprising:
an implantable lead assembly including a first electrode and a second electrode, the first electrode comprising a coil electrode configured to provide a defibrillation energy to a subject heart, and the second electrode configured to locally provide a pacing signal to a region at or near a His bundle of the subject heart; and a pulse generator circuit, wherein the pulse generator circuit is configured to provide, to the implantable lead assembly, non-defibrillating electrostimulation pulses including the pacing signal and including at least two pulses of opposite polarity and occurring sufficiently proximate one another in at least one of time or distance to elicit myocardium capture of the subject heart.