An implantable medical device such as an implantable pacemaker or implantable cardioverter/defibrillator includes a programmable sensing circuit providing for sensing of a signal approximating a surface electrocardiogram (ECG) through implanted electrodes. With various electrode configurations, signals...http://www.google.ca/patents/US20080051672?utm_source=gb-gplus-sharePatent US20080051672 - WIRELESS ECG IN IMPLANTABLE DEVICES
