LEVEL CROSSING DETECTOR FOR DETECTING NOISE, SINUS RHYTHM AND VENTRICULAR FIBRILLATION IN SUBCUTANEOUS OR BODY SURFACE SIGNALS

摘要

A SubQ ICD that is entirely implantable subcutaneously with minimal surgical intrusion into the body of the patient and associated with subcutaneous leads provides distributed cardioversion- defibrillation sense and stimulation electrodes for delivery of cardioversion-defibrillation shock and pacing therapies across the heart when necessary. A level crossing detection system and process is implemented to detect noise, sinus rhythm and ventricular fibrillation in subcutaneous or body surface signals to deliver therapies as needed.