| abstract |
The present invention relates to a bifurcated aortic prosthesis comprising a structure ( 2 ) which comprises a main trunk ( 3 ) which divides into two branches ( 4, 5 ) of equal lengths and which has shape memory, and at least one impervious envelope ( 6 ) completely enveloping said branches ( 4, 5 ) and at least partially enveloping said trunk ( 3 ). According to the invention, said envelope ( 6 ) has a length (L) such that, in the position in which it is implanted in the aorta (AO), it approximately covers that part of the aorta (AO) which lies between the renal arteries (A 1, A 2 ) and the iliac arteries (A 3, A 4 ) and the length (l 2 ) of said branches ( 4, 5 ) is between 1/4 and 2/5 of the length (L) of said envelope ( 6 ). |