Disclosed in the present invention is a valved conduit comprising an artificial vessel and an artificial valve, wherein the artificial vessel has an end near the heart and an end far from the heart, and the artificial valve is positioned at the end of the artificial vessel nearest the heart. A left and right opening are provided at the side wall of the artificial vessel in proximity to the artificial valve, and the positions of the left and right openings correspond to the openings of the left and right coronary artery ostia. The valved conduit also comprises a hard conduit which is in communication with the artificial vessel and which is ligated with the aorta via a ligation band, wherein the hard conduit comprises a hard conduit at the end nearest the heart, positioned between the left and right openings, and the end far from the heart, and is in proximity to the end of the artificial vessel nearest the heart. A space is formed between the ligation position and the aortic valve, and blood is supplied to the whole body via the artificial vessel, as well as flowing into the space via the above-mentioned openings so as to supply the left and right coronary arteries, without the openings and the coronary arteries being sutured, decreasing the probability of bleeding of the anastomotic stoma.La présente invention concerne un conduit à valve comprenant un vaisseau artificiel et une valve artificielle, le vaisseau artificiel ayant une extrémité proche du cœur et une extrémité éloignée du cœur, et la valve artificielle étant positionnée à lextrémité du vaisseau artificiel le plus près du cœur. Des ouvertures gauche et droite sont disposées sur la paroi latérale du vaisseau artificiel à proximité de la valve artificielle, et les positions des ouvertures gauche et droite correspondent aux ouvertures des ostia dartères coronaires gauche et droite. Le conduit à valve comprend également un conduit dur qui est en communication avec le vaisseau artificiel et qui est ligaturé à l
