Finite element structural analysis of self-expandable stent deployment in a curved stenotic artery

Jung, Taeksu; Kim, Jang Yong

doi:10.1007/s12206-016-0624-5

Cited by 8 publications

(9 citation statements)

References 12 publications

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“…Exponent (Medtronic) [6] Precise (Cordis) [6][7][8] Protégé (ev3) [7,8] Vivexx Carotid Stent (C. R. Bard) [7,8] Zilver Stent (Cook) [9] Acculink (Abbott Vascular) [10,11]…”

Section: Stent Name (Manufacturer)mentioning

confidence: 99%

“…There are six types of stent for the current study which resembled the existing stent strut configuration. As shown in Figure 1, Type I resembled Exponent (Medtronic), Type II resembled Precise (Cordis), Type III resembled Protégé (ev3), Type IV resembled Vivexx Carotid Stent (C. R. Bard), Type V resembled Zilver Stent (Cook) and Type VI resembled Acculink (Abbott Vascular) [6][7][8][9][10][11]. The modeled stents have a dimension of length (lS), thickness (hS) and outer radius (ro) which equivalents to 20 mm, 0.2 mm and 3.25 mm, respectively.…”

Section: Geometries Of the Resembled Stent Strut Configurationmentioning

confidence: 99%

“…Table 1 shows a data of postprocedural event rates of the stated complications on each existing stent devices such as Precise, Protégé, Acculink and Exponent. The geometries of the existing devices can be seen in Table 2 with an addition of Vivexx Carotid Stent and Zilver Stent [6][7][8][9][10][11]. Furthermore, hypertension is one of the risk factors that accelerate the stenosis development [12].…”

Section: Introductionmentioning

confidence: 99%

“…Values higher than that could lead to proliferation of endothelial cells and arterial stenosis [15]. The computation of WSSG involves WSS derivatives in two directions, which are blood flow direction (α) and normal to the direction (β) as stated in equation (8) [29]. Since this study is a pulsatile flow, WSSG was computed as TAWSSG as shown in equation 4 Besides, OSI provides an index describing the shear stress that acts in the directions other than that of the temporal mean shear stress vector [30].…”

mentioning

confidence: 99%

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Evaluation System on Haemodynamic Parameters for Stented Carotid Artery: Stent Pictorial Selection Method

Paisal

Taib²,

Ismail³

et al. 2019

IJIE

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Stent implantation is an alternative invasive technique for treating the narrowed artery or stenosis in carotid artery to restore blood to the brain. However, the restenosis process is usually observed after a few weeks of carotid angioplasty and stenting due to abnormal progression of atherosclerosis and thrombosis. Many studies reported that the activity of atherosclerosis and thrombosis is majorly influenced by the geometrical strut configuration. Thus, this study was carried out to determine the hemodynamic performance on different geometrical stent strut configurations based on numerical modelling and statistical analyses. In this study, there are six stent types with different geometry that resembles the existing stent, namely as Type I, Type II, Type III, Type IV, Type V and Type VI which are resembling to Exponent (Medtronic), Precise (Cordis), Protégé (ev3), Vivexx Carotid Stent (C. R. Bard), Zilver Stent (Cook) and Acculink (Abbott Vascular), respectively. The stent strut configurations were 3-D modelled and simulated in different physiological conditions; normal blood pressure (NBP), pre-hypertension (PH) and hypertension stage one (HS1) through computational fluid dynamic (CFD) method. The hemodynamic performance of stent was analyzed based on parameters namely time averaged wall shear stress (TAWSS), time averaged wall shear stress gradient (TAWSSG), oscillatory shear index (OSI), relative residence time (RRT) and flow separation parameter (FSP). Meanwhile, Pictorial Selection Method was used to evaluate the best hemodynamic stent performance based on a scoring system. From observation, stent Type II was seen to show the highest score for TAWSS, which about 3.44 regardless of any physiological conditions. For TAWSSG, the lowest score was observed for Type V stent with 0.36. Furthermore, Type VI stent displayed the highest score for OSI while Type IV has the lowest score for FSP with 3.09 and 1.23, respectively. On the other hand, RRT was seen varying according to the physiological condition where the highest score in NBP condition was achieved by Type I while PH and HS1 condition was achieved by Type VI. In conclusion, Type VI has the best stent performance, whereas Type IV has the worst stent performance regarding the scoring system based on hemodynamic parameters. Further, Type I, Type II, Type III and Type V stents showed moderate hemodynamic performances for all physiological conditions.

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“…Exponent (Medtronic) [6] Precise (Cordis) [6][7][8] Protégé (ev3) [7,8] Vivexx Carotid Stent (C. R. Bard) [7,8] Zilver Stent (Cook) [9] Acculink (Abbott Vascular) [10,11]…”

Section: Stent Name (Manufacturer)mentioning

confidence: 99%

Section: Geometries Of the Resembled Stent Strut Configurationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Evaluation System on Haemodynamic Parameters for Stented Carotid Artery: Stent Pictorial Selection Method

Paisal

Taib²,

Ismail³

et al. 2019

IJIE

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show abstract

“…For example, FEA was used to predict whether two different types of stents provoke different levels of stress in the vascular wall (Lally et al, 2005 ). On the one hand, other researchers used FEA to numerically evaluate commercial stents, which were deployed in straight or curved arteries with plaque (Jung and Kim, 2016 ). On the other hand, stent thrombosis is a frequently met problems after stenting.…”

Section: Introductionmentioning

confidence: 99%

The Performance of a Spherical-tip Catheter for Stent Post-dilation: Finite Element Analysis and Experiments

Zhu

Qian

et al. 2021

Front. Physiol.

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At present, percutaneous coronary intervention (PCI) is the most effective treatment of coronary artery stenosis. However, in case post-dilation of the stent is needed, the tip of the commonly used post-dilation balloon catheter cannot always pass through the stent smoothly, especially when it is situated in the curved part of the vessel. To improve the performance of traditional post-dilation balloon catheter, a preliminary design of a novel catheter with a spherical-tip is proposed. Since the performance of this spherical-tip catheter is still unclear, in this study, finite element analysis (FEA) and experimental validation of blood vessel with different curvature radii were performed to test and evaluate the performance of the spherical-tip catheter design. The comparative results between the two types of catheters demonstrate that in the simulated post-dilation process, the spherical-tip catheter is easier to pass through the stent placed in the curved vessel without the deformation of the stent strut, and can theoretically reduce the operation time and improve the safety of the operation. Furthermore, the strong consistency between simulation and experiment indicates that the finite element (FE) model can be a helpful tool for future optimization and evaluation of novel catheters, so as to save time and budget in product development and reduce/replace animal studies.

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A FEM Study of Mechanical Behavior of S-Shaped-Stent

Mihalev

Vladimirova-Mihaleva

Hardalov

et al. 2022

Lecture Notes in Networks and Systems

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Finite element structural analysis of self-expandable stent deployment in a curved stenotic artery

Cited by 8 publications

References 12 publications

Evaluation System on Haemodynamic Parameters for Stented Carotid Artery: Stent Pictorial Selection Method

Evaluation System on Haemodynamic Parameters for Stented Carotid Artery: Stent Pictorial Selection Method

The Performance of a Spherical-tip Catheter for Stent Post-dilation: Finite Element Analysis and Experiments

A FEM Study of Mechanical Behavior of S-Shaped-Stent

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