The knitted double-velour architecture of Uni-Graft® K DV, permit the inward migration of cells and ensures a firm integration into the surrounding tissue. The velours on the interior surface facilitates adhesion of the fibrin film which develops during the first phase of revascularisation. The gelatine impregnation effectively seals all pores in the graft and therefore does not require preclotting. Furthermore, the impregnation prevents the penetration of blood into the graft wall