title: Shape memory polymer stent with expandable foam: a new concept for endovascular embolization of fusiform aneurysms.
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.
authors.affiliation: Lawrence Livermore National Laboratory, 7000 East Avenue, L-211, Livermore, CA 94550 USA. small3@llnl.gov
authors.forename: Ward
authors.initials: W
authors.lastname: Small
authors.forename: Patrick R
authors.initials: PR
authors.lastname: Buckley
authors.forename: Thomas S
authors.initials: TS
authors.lastname: Wilson
authors.forename: William J
authors.initials: WJ
authors.lastname: Benett
authors.forename: Jonathan
authors.initials: J
authors.lastname: Hartman
authors.forename: David
authors.initials: D
authors.lastname: Saloner
authors.forename: Duncan J
authors.initials: DJ
authors.lastname: Maitland
mesh_terms: D000783:Aneurysm / Q000628:therapy*; D001672:Biocompatible Materials / Q000737:chemistry*; D001807:Blood Vessel Prosthesis; D004548:Elasticity; D004621:Embolization, Therapeutic / Q000295:instrumentation* / Q000379:methods; D019544:Equipment Failure Analysis; D005240:Feasibility Studies; D006801:Humans; D011108:Polymers / Q000737:chemistry*; D011474:Prosthesis Design; D015607:Stents
chemical_list: D001672:Biocompatible Materials; D011108:Polymers