Patent ID: 8287586

Claim:
A branch vessel prosthesis for use with an aorta stent graft defining a lumen and having a fenestration aligned with a branch vessel, comprising: a stent comprising a tubular portion, a flareable portion, and at least one bending portion located between the tubular and the flareable portions, where the bending portion is configured to have greater flexibility than at least one of the tubular portion or flareable portion, where the flareable portion comprises a distal end having a point of attachment with the tubular portion, and further comprises a proximal end having at least one unattached peak that is flared radially outward relative to the distal end by bending of the bending portion, where the greater flexibility of the bending portion facilitates flaring of the flareable portion, and where the bending portion comprises a metal strut having a substantially uniform thickness and at least one apex.