New Vascular Graft for Assembling the Stentless Valve Composite Graft

The use of a new vascular tube with an uncrimped section for assembling the stentless valve composite graft is described. The graft simplifies the fixation of the valve within the tube because no stretching of the crimping is necessary to achieve optimal commissural height of the valve during sewing. Furthermore, this allows the composite construction outside the chest and reduces the cross-clamp time.