An implantable improved three-pole electrocatheter for permanent cardiac stimulation. The electrocatheter is of the type which comprises a flexible body which extends predominantly axially, is made of biocompatible material and can be surgically inserted through a vein until it reaches the cardiac muscle...http://www.google.ca/patents/US5443491?utm_source=gb-gplus-sharePatent US5443491 - Three-pole electrocatheter
