An obstructed coronary artery is bypassed by forming a first blood flow path from a left ventricle of the heart to a coronary vein associated with the obstructed coronary artery. A second blood flow path is formed form the obstructed coronary artery to the right ventricle for blood to flow from the left...http://www.google.fr/patents/US5908029?utm_source=gb-gplus-shareBrevet US5908029 - Coronary artery bypass with reverse flow
