Resistance to Hoop Stress in Balloon Expandable Stents

Grenacher, Lars; Deutsch, Jochen; Lubienski, Andreas; Richter, G. M.

doi:10.1097/00004424-200302000-00001

Cited by 4 publications

(1 citation statement)

References 21 publications

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“…Elastic Recoil Inflation by displacement control resulted in uniform radial expansion in all stent configurations. Upon balloon deflation, the R of the different devices was generally low, especially if compared to the values reported for stents used in different clinical indications 16–18 …”

Section: Resultsmentioning

confidence: 89%

Finite Element Analysis of Stent Deployment: Understanding Stent Fracture in Percutaneous Pulmonary Valve Implantation

Schievano¹,

Petrini²,

Migliavacca³

et al. 2007

J Interven Cardiology

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Section: Resultsmentioning

confidence: 89%

Finite Element Analysis of Stent Deployment: Understanding Stent Fracture in Percutaneous Pulmonary Valve Implantation

Schievano¹,

Petrini²,

Migliavacca³

et al. 2007

J Interven Cardiology

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Impact of Stent Design on In-Stent Stenosis in a Rabbit Iliac Artery Model

Sommer

Grenacher

Arnegger

et al. 2009

Cardiovasc Intervent Radiol

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The purpose of this study was to evaluate the impact of stent design on in-stent stenosis in rabbit iliac arteries. Four different types of stent were implanted in rabbit iliac arteries, being different in stent design (crown or wave) and strut thickness (50 or 100 microm). Ten stents of each type were implanted. Each animal received one crown and one wave stent with the same strut thickness. Follow-up was either 12 weeks (n = 10 rabbits) or 24 weeks (n = 10 rabbits). Primary study end points were angiographic and microscopic in-stent stenosis. Secondary study end points were vessel injury, vascular inflammation, and stent endothelialization. Average stent diameter, relative stent overdilation, average and minimal luminal diameter, and relative average and maximum luminal loss were not significantly different. However, a trend to higher relative stent overdilation was recognized in crown stents compared to wave stents. A trend toward higher average and minimal luminal diameter and lower relative average and maximum luminal loss was recognized in crown stents compared to wave stents with a strut thickness of 100 microm. Neointimal height, relative luminal area stenosis, injury score, inflammation score, and endothelialization score were not significantly different. However, a trend toward higher neointimal height was recognized in crown stents compared to wave stents with a strut thickness of 50 microm and a follow-up of 24 weeks. In conclusion, in this study, crown stents seem to trigger neointima. However, the optimized radial force might equalize the theoretically higher tendency for restenosis in crown stents. In this context, also more favorable positive remodeling in crown stents could be important.

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Nonaortic Stents and Stent-Grafts

Pearce¹,

Jordan²

2010

Rutherford's Vascular Surgery

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Resistance to Hoop Stress in Balloon Expandable Stents

Cited by 4 publications

References 21 publications

Finite Element Analysis of Stent Deployment: Understanding Stent Fracture in Percutaneous Pulmonary Valve Implantation

Finite Element Analysis of Stent Deployment: Understanding Stent Fracture in Percutaneous Pulmonary Valve Implantation

Impact of Stent Design on In-Stent Stenosis in a Rabbit Iliac Artery Model

Nonaortic Stents and Stent-Grafts

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