Balloon surface changes after stent deployment: Influence of the crimping technique

Rondeau, Felix; Pilet, Paul; Heymann, Dominique; Crochet, D.; Grimandi, G.

doi:10.1016/s1297-9562(02)90005-7

Cited by 2 publications

(4 citation statements)

References 5 publications

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“…Furthermore , it has been shown that especially the tapers of the balloon are exposed to high stresses. Thus, the balloon membrane could already be significantly weakened during folding and pleating in addition to the damage described by Rondeau et al caused by crimping. Balloon tapers could typify the weak point of an SDS, which is why special attention must be paid to them during the early stage of development.…”

Section: Discussionmentioning

confidence: 90%

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On the importance of modeling balloon folding, pleating, and stent crimping: An FE study comparing experimental inflation tests

Geith

Swidergal

Hochholdinger³

et al. 2019

Numer Methods Biomed Eng

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Finite element (FE)–based studies of preoperative processes such as folding, pleating, and stent crimping with a comparison with experimental inflation tests are not yet available. Therefore, a novel workflow is presented in which residual stresses of balloon folding and pleating, as well as stent crimping, and the geometries of all contact partners were ultimately implemented in an FE code to simulate stent expansion by using an implicit solver. The numerical results demonstrate that the incorporation of residual stresses and strains experienced during the production step significantly increased the accuracy of the subsequent simulations, especially of the stent expansion model. During the preoperative processes, stresses inside the membrane and the stent material also reached a rather high level. Hence, there can be no presumption that balloon catheters or stents are undamaged before the actual surgery. The implementation of the realistic geometry, in particular the balloon tapers, and the blades of the process devices improved the simulation of the expansion mechanisms, such as dogboning, concave bending, or overexpansion of stent cells. This study shows that implicit solvers are able to precisely simulate the mentioned preoperative processes and the stent expansion procedure without a preceding manipulation of the simulation time or physical mass.

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Section: Discussionmentioning

confidence: 90%

“…It is also essential to consider an investigation of balloon catheters during the crimping process. Rondeau et al demonstrated in their study that balloon membranes show alterations on their surface like streaks and even abrasion after stents were crimped on them.…”

Section: Introductionmentioning

confidence: 99%

On the importance of modeling balloon folding, pleating, and stent crimping: An FE study comparing experimental inflation tests

Geith

Swidergal

Hochholdinger³

et al. 2019

Numer Methods Biomed Eng

View full text Add to dashboard Cite

show abstract

“…For example, the stent may not cause damages to the expandable balloon wall. (RONDEAU et al, 2002;ARAÚJO et al, 2009). If this occurs, the angioplasty procedure may not be successfully since the balloon material may be subjected to the rupture.…”

Section: Definition Of Expansion and Crimpingmentioning

confidence: 99%

“…However, before the angioplasty, the stent is crimped on the balloon, that is, it is mounted on the external surface from expandable balloon. In this procedure, a compression pressure is applied on the stent (RONDEAU et al, 2002;ARAÚJO et al, 2009). Since the stent diameter is reduced, it is subjected to a plastic stress distribution after the crimping process.…”

Section: Introductionmentioning

confidence: 99%