Conduits are provided to direct blood flow from the left ventricle to a coronary artery at a location distal to a blockage in the coronary artery. Threaded and nonthreaded conduits are delivered using a guidewire delivered through the posterior and anterior walls of a coronary artery and into the heart...http://www.google.com/patents/US6964652?utm_source=gb-gplus-sharePatent US6964652 - Left ventricular conduits and methods for delivery
