Hemodynamic study for new stent design with mesh-typed stents in a cerebral aneurysm model using PIV

Chang Ho Yu, Makoto Ohta, Tae Kyu Kwon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The rupture of an aneurysm can lead to a subarachnoid hemorrhage, which can be fatal in a large percentage of cases. In treating aneurysms, intravascular stenting is thought as a better option compared with clipping treatment. The treatment of cerebral aneurysm with a porous stent also has recently been proposed as a minimally invasive way to prevent rupture and favor coagulation mechanism inside the aneurysm. Flow characteristics in a box-typed straight rigid silicone with a sphere attached to the center of a baseline straight tube have been investigated using particle image velocimetry (PIV) at Reynolds number of 300. A 20 mm long mesh-work of rhombus shape stent was tested in the present investigation. Four stent porosities of 100%, 80%, 74%, and 64 % were examined. Reduced velocity, smaller average vorticity magnitude and different flow patterns inside the aneurysm are observed when the three different proposed stents are used. The lower porosity stent (Porosity =64%) decreases the magnitude of the velocity by 98% and changes the flow pattern in the aneurysm. Our results show that not only the role of the porosity but also the stent shape affects the flow. Moreover, we hope that this work will help us understand the characteristic of stent designs.

Original languageEnglish
Title of host publicationICCAS 2012 - 2012 12th International Conference on Control, Automation and Systems
Pages1706-1709
Number of pages4
Publication statusPublished - 2012 Dec 1
Event2012 12th International Conference on Control, Automation and Systems, ICCAS 2012 - Jeju, Korea, Republic of
Duration: 2012 Oct 172012 Oct 21

Publication series

NameInternational Conference on Control, Automation and Systems
ISSN (Print)1598-7833

Other

Other2012 12th International Conference on Control, Automation and Systems, ICCAS 2012
Country/TerritoryKorea, Republic of
CityJeju
Period12/10/1712/10/21

Keywords

  • Particle image velocimetry
  • Stent
  • aneurysm
  • poredensity
  • porosity

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Science Applications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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