Patent ID: 6475238
Filing Date: 2002-11-05
Classification: A61F

Abstract:
A bifurcated aortic prosthesis intended to be implanted in the abdominal aorta of a human body to treat an aneurysm of the aortic bifurcation, said prosthesis comprising:a single-piece structure which comprises a main trunk which divides into two branches of equal lengths, which is of the shape memory type and which is produced in such a way as to allow said prosthesis to adopt one of two positions: a folded and compact position to allow the prosthesis to be implanted in said aorta and a position in which the prosthesis is implanted and deployed in the aorta to create a substitute passage in the region of said aneurysms; and at least one impervious envelope completely enveloping said branches and at least partially enveloping said trunk, wherein said envelope has a length such that, in said implanted position, said envelope approximately covers that part of the aorta which lies between the renal arteries and the iliac arteries and a length of said branches is between Â¼ and &frac25; of the length of said envelope.