Ortic Stent Graft : Shou [Srphc82281040 Aortic Stent Graft : Should Enable Endovascular Treatment Of Arch Of Aorta And Descending Thoracic Aorta Aneurysms And Dissections. The Stent Graft Should Come In Various Lengths And Diameters. It Should Consist Of (1) A Self Expanding, Tubular Endoprosthesis Composed Of A Polyester Graft Fabric And A Spring Scaffold Made From Nitinol Wire. (2) Radiopaque Markers Are To Be Sewn To The Fabric To Radiographically Visualize The Edge Of The Graft Material