A vascular prosthesis system for inserting into and supporting a blood vessel of a patient, which vascular prosthesis system is convertible from a compressed state to an expanded state, said vascular prosthesis system having the following: a stent graft element with a hollow cylindrical body, a first, proximal stent graft element end and a second, distal stent graft element end, the stent graft element having supports extending circumferentially in a meandering formation and having a prosthesis material attached to the supports thereby connecting them, for forming a circumferentially covered stent graft element, and a stent element with a hollow cylindrical body, a first, proximal stent element end and a second, distal stent element end, the stent element having a stent support framework, which is free of prosthesis material, for forming an uncovered stent element, characterized in that the stent graft element and the stent element are two structurally separate elements of the vascular prosthesis system, and that the stent element is dimensioned and designed, such, that it is insertable with its second, distal stent element end at least partially into the first, proximal stent graft element end and is expansible therein, wherein furthermore the stent element, at its first, proximal end, is firmly connected circumferentially to a stent-free prosthesis portion, which prosthesis portion is made solely of prosthesis material, and wherein furthermore the stent graft element and the stent element are connected to each other only by a strip-shaped prosthesis material portion, such, that the strip-shaped prosthesis material portion is fixed with a first end on the first, proximal stent graft element end and is fixed with its second end on the first, proximal stent element end in order to form a prosthesis material bridge. a stent graft element with a hollow cylindrical body, a first, proximal stent graft element end and a second, distal stent graft element end, the stent graft element having supports extending circumferentially in a meandering formation and having a prosthesis material attached to the supports thereby connecting them, for forming a circumferentially covered stent graft element, and a stent element with a hollow cylindrical body, a first, proximal stent element end and a second, distal stent element end, the stent element having a stent support framework, which is free of prosthesis material, for forming an uncovered stent element, characterized in that the stent graft element and the stent element are two structurally separate elements of the vascular prosthesis system, and that the stent element is dimensioned and designed, such, that it is insertable with its second, distal stent element end at least partially into the first, proximal stent graft element end and is expansible therein, wherein furthermore the stent element, at its first, proximal end, is firmly connected circumferentially to a stent-free prosthesis portion, which prosthesis portion is made solely of prosthesis material, and wherein furthermore the stent graft element and the stent element are connected to each other only by a strip-shaped prosthesis material portion, such, that the strip-shaped prosthesis material portion is fixed with a first end on the first, proximal stent graft element end and is fixed with its second end on the first, proximal stent element end in order to form a prosthesis material bridge.