Conformation of adjacent self-expanding stents: a cross-sectional in vitro study.
We examined the proximal conformation of three commonly used self-expanding stents when the stents were deployed adjacent to one another in a tubular model, simulating a "kissing" stent technique. The stent pairs were evaluated by computed tomogrphy to determine the cross-sectional area excluded by the stents within the model. The mean areas associated with each stent pair were compared and significance evaluated by a t-test. A statistically significant difference was found when the area excluded by adjacent Wallstents was compared with both the Luminexx and SMART stents (p < 0.001 and p < 0.002, respectively). The difference in the area excluded and differences in conformation might play a role in the lower patencies that have been observed in "kissing" stent series.
Hughes
Marion
M
Section of Vascular & Interventional Radiology, University of Michigan Medical Center, Ann Arbor, Michigan, USA.
Forauer
Andrew R
AR
Lindh
Mats
M
Cwikiel
Wojciech
W
D000497:Alloys; D002857:Chromium; D003035:Cobalt; D004867:Equipment Design; D066298:In Vitro Techniques; D015607:Stents; D014057:Tomography, X-Ray Computed
D000497:Alloys; D002857:Chromium; C013616:nitinol; D003035:Cobalt