Abstract
No one has succeeded to get the long survival goat with pneumatic TAH implanted into the chest cavity except one case of 184 days in CSSR. We also tried to implant a TAN pump into the goat's chest cavity without success, whereas we have enough experiences to survive the goat with externally placed TAH. Under a hypothesis in which a goat has a large plexsus at the ascending aorta and circulatory disorder will be caused when aorta is cut to connect an aortic cannula, the connection of aortic cannula was changed from ascending to descending aorta, which improved the hemodynamics of TAH and promised to get a long survivor.