每年出版 4 期
ISSN 打印: 1050-6934
ISSN 在线: 1940-4379
Indexed in
Detailed Analysis of a Series of Explanted Talent AAA Stent-Grafts: Biofunctionality Assessment
摘要
Six Talent stent-grafts were harvested at reoperations (N=5) and autopsy (N=1). The explants were observed nondestructively, including gross morphology, X-rays, CT scans and closed pressure system analysis. The Nitinol frames in three devices harvested at reoperations and another harvested at autopsy were intact. One had a stent fracture of the proximal bare stent, and one had a wire fracture of a thin proximal external supporting stent as well as a hole in the fabric just above the bifurcation. For the three devices structurally intact, reoperations were performed for a type 1A endoleak (one patient) and aorto-enteric fistulas (two patients). The healing characteristics were poor or absent. The fabric in the main body of the grafts harvested after aorto-enteric fistula was devoid of biological deposits. Two of the grafts harvested at reoperation demonstrated fabric holes of up to 4 mm 2. The device obtained at autopsy showed an almost continuous internal capsule with variable thickness. The luminal surface was smooth, but the capsule detached easily. The devices explanted at reoperations showed various levels of impaired biofunctionality associated with adverse outcomes. The stent-graft retrieved from autopsy was intact.
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Lin Jing, Guidoin Robert, Du Jia, Wang Lu, Douglas Graeham, Zhu Danjie, Nutley Mark, Perron Lygia, Zhang Ze, Douville Yvan, An in Vitro Twist Fatigue Test of Fabric Stent-Grafts Supported by Z-Stents vs. Ringed Stents, Materials, 9, 2, 2016. Crossref
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Lin Jing, Wang Lu, Guidoin Robert, Nutley Mark, Song Ge, Zhang Ze, Du Jia, Douville Yvan, Stent fabric fatigue of grafts supported by Z-stents versus ringed stents: An in vitro buckling test, Journal of Biomaterials Applications, 28, 7, 2014. Crossref