In-vitro Imaging of Femoral Artery Nitinol Stents for Deformation Analysis

Ganguly, Arundhuti; Simons, J. W.; Schneider, Alex; Keck, Benjamin; Bennett, Nathan R.; Fahrig, Rebecca

doi:10.1016/j.jvir.2010.10.017

Cited by 15 publications

(3 citation statements)

References 19 publications

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“…4,[6][7][8][9][10][11][12][13][14][15][16][17] The articles not included consisted of computational modeling studies, in vitro studies comparing stent performance with bench-top models, studies of wall compliance as a function of disease, studies of changes in hemodynamics due to motion, and qualitative assessments of artery deformation. [18][19][20][21][22][23] The group of articles was further expanded by including relevant articles or presentations that were referenced by the 12 articles. [24][25][26] In addition, private correspondence with Arundhuti Ganguly, PhD, (e-mail correspondence, July 2011) and Alexander Nikanorov, PhD, (e-mail correspondence, July 2011) was used to clarify and supplement published data.…”

Section: Literature Searchmentioning

confidence: 99%

Design considerations for studies of the biomechanical environment of the femoropopliteal arteries

Ansari

Pack

Brooks

et al. 2013

Journal of Vascular Surgery

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A review of the current literature reveals heterogeneous study designs that confound interpretation. Studies included different physiologic settings from young to mature participants, participants with and without disease, and cadavers. Investigators used a range of imaging modalities and definitions of arterial segments, which affected our ability to compile the data as we learned that deformations vary according to the specific anatomic location within the SFA/PA. As a result of this analysis, we identified design considerations for future studies, because although this work has been valuable and significant, there are many limitations with the currently available data such that all we know about the SFA/PA environment is that we don't know.

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Section: Literature Searchmentioning

confidence: 99%

Design considerations for studies of the biomechanical environment of the femoropopliteal arteries

Ansari

Pack

Brooks

et al. 2013

Journal of Vascular Surgery

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“…However, Scheinert et al 21 called attention to the fact that stent fractures occurred at different time intervals after implantation depending on type and brand of device used. These factors have been the focus of in vitro analyses of deformation, 22 , 23 fatigue, and durability of stents. 24 This calls for standardized clinical studies to elucidate the issue of the estimated critical period for occurrence of fractures in different types of devices used for revascularization of the SFA.…”

Section: Discussionmentioning

confidence: 99%

Stent fractures in the superficial femoral artery: predisposing factors and their implications

et al. 2022

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Background Fractures in stents implanted in the superficial femoral artery (SFA) are recognized complications of endovascular management of this arterial territory. Objectives The objective of this study was to determine the prevalence of fractures in stents implanted in the SFA and to identify predisposing factors for these fractures together with their impact on the patency of these devices. Methods The study included 39 patients (65.7±9.0 years) who previously underwent angioplasty for delivery of 56 stents into the SFA. During follow-up, which ranged from 7 to 46 months, variables were collected on the characteristics of the lesions treated and characteristics of the stents implanted. Two examiners independently analyzed digital radiographs for the presence of stent fractures and the patency of the devices. Results We found a 10.7% prevalence of fracture of implanted stents. Implantation of multiple stents was identified as a significant predisposing factor for fractures. We observed a marked tendency for fractures in female patients and in lesions treated with longer stents (> 150 mm). Stenosis exceeding 50% and occlusions were significantly more frequent in fractured stents. Conclusions This study suggests that implants longer than 150 mm and multiple stents are associated with higher device fracture rates. In cases with stent fractures, stenoses exceeding 50% and occlusions were significantly more frequent.

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“…Han also has investigated the critical buckling by using nonlinear elastic thick-walled cylindrical model with residual stress which was developed by Han [3]. On the other hand, collapse of the vessel lumen and, the bent buckling of tubular arteries was recently reported [10][11][12][13]. The buckling of aorta artery causes additional wall stress and it leads to affect blood flow and cause extra loads to itself.…”

Section: Introductionmentioning

confidence: 99%