A single-pass endocardial lead electrode adapted for implantation in, on or about the heart and for connection to a system for monitoring or stimulating cardiac activity includes a lead body which is adapted for implantation within a single chamber of the heart, or multiple chambers of the heart. The...http://www.google.co.uk/patents/US6505082?utm_source=gb-gplus-sharePatent US6505082 - Single pass lead system
