Working Paper Review Version 2 This version is not peer-reviewed

The Polymer-Based Technology in the Endovascular Treatment of Abdominal Aortic Aneurysms

Version 1 : Received: 13 February 2021 / Approved: 17 February 2021 / Online: 17 February 2021 (09:24:24 CET)
Version 2 : Received: 23 February 2021 / Approved: 24 February 2021 / Online: 24 February 2021 (10:00:44 CET)

How to cite: de Donato, G.; Pasqui, E.; Panzano, C.; Brancaccio, B.; Grottola, G.; Galzerano, G.; Benevento, D.; Palasciano, G. The Polymer-Based Technology in the Endovascular Treatment of Abdominal Aortic Aneurysms. Preprints 2021, 2021020348 de Donato, G.; Pasqui, E.; Panzano, C.; Brancaccio, B.; Grottola, G.; Galzerano, G.; Benevento, D.; Palasciano, G. The Polymer-Based Technology in the Endovascular Treatment of Abdominal Aortic Aneurysms. Preprints 2021, 2021020348

Abstract

An abdominal aortic aneurysm (AAA) is a dilatation of the abdominal aorta that progressively grows till the rupture. Treatment is typically recommended when the diameter is more than 5 cm. The EVAR (Endovascular aneurysm repair) is a mininvasive procedure that involves the placement of an expandable stent graft within the aorta to treat aortic disease without operating directly on the aorta. For years, stent grafts' essential design was based on metallic stent frames to support the fabric. More recently, a polymer-based technology has been proposed as an alternative method to seal AAA. This review underlines the two platforms that are based on a polymer technology: 1)the polymer-filled endobags, so-called Endovascular Aneurysm Sealing (EVAS) with Nellix stent graft; and 2)the O-ring EVAR polymer-based proximal neck sealing device, so-called Ovation stent graft. Polymer characteristics for this particular aim, clinical applications, and durability results are summarized and commented critically. The platform that embraced the concept of inflating endobags filled with polymer to exclude the aneurysmal sac was not successful because of the lack of an adequate proximal fixation. The platform that used polymer to create a circumferential sealing of the aneurysmal neck has proven safe and effective.

Keywords

Endovascular Aneurysm Repair; EVAR; Aortic Aneurysm; PEG; polymer; Vascular Surgery; aortic endograft.

Comments (1)

Comment 1
Received: 24 February 2021
Commenter: Gianmarco de Donato
Commenter's Conflict of Interests: Author
Comment: The text was implemented and Some references were added to fit the Journal editorial policies.
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