A vascular prosthesis with an impregnation including at least one sealing material in the prosthesis wall and/or with a coating including at least one sealing material on the outer surface of the prosthesis, wherein the prosthesis, when subjected to a force of 1 N acting perpendicularly with respect to the outer surface of the prosthesis, is deformed such that the external diameter of the prosthesis decreases, in the direction of the acting force, by 60 to 100% in relation to the original external diameter.
