Abstract: A vascular prosthesis may be implanted in a vessel, having substantially a T-shape, that includes a proximal tubular part forming the base of the “T” and a distal tubular part forming the head of the “T”. The second end portion of the distal tubular part is formed by a flap. The flap is opposed to a circumferential indentation in the deployed position. The structural frame of the flap includes an arched segment connected at its ends to the intermediate portion of the distal tubular part. The arched segment is bendable so as to form a joint for the folding/unfolding movement of the flap.

Abstract: A vascular prosthesis configured to be implanted in a vessel, having substantially a T-shape, comprises a proximal tubular part forming the base of the “T” and a distal tubular part forming the head of the “T”. The proximal tubular part has a first lumen, the distal tubular part has a second lumen, and the first and second lumens are fluidly connected to form a common lumen. The distal tubular part comprises a first end portion, a second end portion, and an intermediate portion extending axially between the first and second end portions. The first and second end portions are radially expandable. The proximal tubular part is connected to the intermediate portion and the second end portion is movable between a retracted position in which the second end portion is axially restrained and a deployed position in which the second end portion is axially deployed.