Related Experiment Video
Updated: May 23, 2026

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
Challenging narrow distal aorta in abdominal aortic aneurysm--endovascular repair using a reversed flared
1Department of Surgery, Division of Vascular Surgery, Kantonsspital Graubuenden, Loestrasse 170, Chur, Switzerland. wyssmd@gmail.com
Introduction:
Narrow aortic bifurcations are a challenging issue while treating abdominal aortic aneurysm by endovascular means. Off-the-shelf products are often not suitable and special considerations and custom-made endoprostheses are necessary.
Report:
Alternatively, some morphologies qualify for a flared tube graft. We report two successful aneurysm exclusions using custom-made (Anaconda, Vascutek/Terumo) step-down diameter grafts in patients with tight distal aortas without the need for pre-interventional endograft adjustments.
Discussion:
In these two cases, implantation of a custom-made proximally flared tube endograft in treating a localised abdominal aortic aneurysm with a narrow and calcified bifurcation seems feasible. They represent uncommon, yet challenging, issues worthy of attention.

