A graft stent graft (1100) comprising: a stent graft main body (1105) with a first fork (1110) defining a first leg (1115) and a second leg (1120), wherein the main body of the stent graft (1105) has a distal end (1106) and a proximal end (1107)； characterized in that the main body of the stent graft (1105) has a diameter at the proximal end (1107) in the range of about 18 mm to about 28 mm； wherein the first leg (1115) and the second leg (1120) each have a diameter in the range of about 12 mm to about 18 mm； wherein the distance from the proximal end (1107) of the main body of the stent graft (1105) to the distal end (1116) of the first leg (1115) is in the range of about 30 mm to about 50 mm； wherein the distance from the proximal end (1107) of the main body of the stent graft (1105) to the distal end (1121) of the second leg (1120) is in a range of about 50 mm to about 70 mm； and a first branch (1125) for large vessels joined with one of the first leg (1115) or the second leg (1120) at the distal end (1106) of the main body of the stent graft (1105) in a unitary configuration, where The first branch (1125) for large vessels has a bifurcation (1130) that defines a third leg (1135) and a fourth leg (1140).Un injerto (1100) de stent desramificante que comprende: un cuerpo principal del injerto (1105) de stent con una primera bifurcación (1110) que define una primera pata (1115) y una segunda pata (1120), en donde el cuerpo principal del injerto (1105) de stent tiene un extremo (1106) distal y un extremo (1107) proximal； caracterizado porque el cuerpo principal del injerto (1105) de stent tiene un diámetro en el extremo (1107) proximal en el intervalo de aproximadamente 18 mm a aproximadamente 28 mm； en donde la primera pata (1115) y la segunda pata (1120) tienen cada una un diámetro en el intervalo de aproximadamente 12 mm a aproximadamente 18 mm； en donde la distancia desde el extremo (1107) proximal del cuerpo principal del injerto (1105) de stent al extremo (1116
