Experience With the Stentor Endograft at Four Italian Centers

Abstract

The Stentor was technically feasible in 10% to 40% of AAA candidates in this study, although deployment of the second limb was problematic in the bifurcated device. Introduction of the second-generation Vanguard endograft brought this study to an end.

Failure of endovascular abdominal aortic aneurysm graft limbs

“…Fully supported graft limbs with a stented endoskeleton or exoskeleton and unsupported grafts are available. We and others [1][2][3][4][5][6][7][8][9][10] have noted failures of endograft limbs in patients after endovascular AAA repair. We sought to investigate which design features could be identified as contributors to patency of endovascular graft limbs.…”

“…All grafts were made of externally supported polytetrafluoroethylene. Graft diameters were either 8 mm (32) or 7 mm (7). Inflow was from the native iliofemoral circulation in 34 patients, six of whom had undergone preliminary percutaneous angioplasty with or without stenting of the inflow vessel.…”

“…We and others have noted the failure of endograft limbs in patients immediately on insertion or at a later time, resulting in limb ischemia. [1][2][3][4][5][6][7][8][9][10] Chuter et al 5 noted a 30% incidence of stenoses in their study of bifurcated, unsupported limbs that were readily treated with stents. In the current report, we noted that all limb failures were attributable to mechanical causes.…”

Abdominal and Thoracic Aortic Stent-Grafts

“…The initial results from European multicenter trials were promising, demonstrating feasibility and acceptable rates of technical and immediate clinical success. 6,[42][43][44][45] When Boston Scientific purchased the product, radical changes were made, particularly in the quality of the graft material. Using their knowledge of endovascular grafts from Meadox, they replaced the original Stentor polyester weave, which contained a longitudinal suture line for a tube graft and resembled their Cooley Veri-Soft woven polyester without crimping.…”

Additive Manufacturing in Vascular Stent Fabrication

“…At the same time, the shape of real blood vessels in the human body is curved, therefore, some standardized stents may "shrivelled" after implantation, because they cannot adapt to the physiological structure of blood vessels. Therefore, the individualized customization of vascular stent is required in clinic [7][8][9][10].…”