title: Stent fabric fatigue of grafts supported by Z-stents versus ringed stents: an in vitro buckling test.
abstract: Stent-grafts externally fitted with a Z-shaped stents were compared to devices fitted with ringed stents in an in vitro oscillating fatigue machine at 200 cycles per minute and a pressure of 360 mmHg for scheduled durations of up to 1 week. The devices fitted with Z-stents showed a considerably lower endurance limit to buckling compared to the controls. The contact between the apexes of adjacent Z-stents resulted in significant damage to the textile scaffolds and polyester fibers due to the sharp angle of the Z-stents. The ringed stents did not cause any fraying in the textile scaffolds.
authors.affiliation: 1Key Laboratory of Textile Science and Technology of Ministry of Education and College of Textiles, Donghua University, Shanghai, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Lin
authors.forename: Lu
authors.initials: L
authors.lastname: Wang
authors.forename: Robert
authors.initials: R
authors.lastname: Guidoin
authors.forename: Mark
authors.initials: M
authors.lastname: Nutley
authors.forename: Ge
authors.initials: G
authors.lastname: Song
authors.forename: Ze
authors.initials: Z
authors.lastname: Zhang
authors.forename: Jia
authors.initials: J
authors.lastname: Du
authors.forename: Yvan
authors.initials: Y
authors.lastname: Douville
mesh_terms: D001672:Biocompatible Materials; D066298:In Vitro Techniques; D008422:Materials Testing; D015607:Stents; D054457:Tissue Scaffolds
chemical_list: D001672:Biocompatible Materials
keywords: Stent-graft; Z-stents; buckling; fatigue simulation; ringed stents