Shape Memory Polymer Stent With Expandable Foam: A New Concept for Endovascular Embolization of Fusiform Aneurysms

Author

Small, Ward, IV ; Buckley, Patrick R. ; Wilson, Thomas S. ; Benett, William J. ; Hartman, Jonathan ; Saloner, David ; Maitland, Duncan J.

Author_Institution

Lawrence Livermore Nat. Lab., CA

Volume

54

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

1157

Lastpage

1160

Abstract

We demonstrate a new concept for endovascular embolization of nonnecked fusiform aneurysms. A device prototype consisting of a stent augmented with expandable foam, both made from shape memory polymer, was fabricated and deployed in an in vitro model. Visual observation indicated that the foam achieved embolization of the aneurysm while the stent maintained an open lumen in the parent artery. The shape memory polymer stent-foam device is a potential tool for treatment of nonnecked fusiform aneurysms, as well as an alternative to stent- and balloon-assisted coil embolization of wide-necked aneurysms

Keywords

biomedical equipment; biomedical materials; blood vessels; patient treatment; polymer foams; shape memory effects; artery; endovascular embolization; expandable foam; fusiform aneurysms; nonnecked fusiform aneurysms; shape memory polymer stent; Aneurysm; Arteries; Biomedical imaging; Coils; Embolization; Neck; Polymer foams; Radiology; Shape; Surface treatment; Embolization; fusiform aneurysm; shape memory polymer; stent; Aneurysm; Biocompatible Materials; Blood Vessel Prosthesis; Elasticity; Embolization, Therapeutic; Equipment Failure Analysis; Feasibility Studies; Humans; Polymers; Prosthesis Design; Stents;

fLanguage

English

Journal_Title

Biomedical Engineering, IEEE Transactions on

Publisher

ieee

ISSN

0018-9294

Type

jour

DOI

10.1109/TBME.2006.889771

Filename

4203027