PIV measured hemodynamic study with several stents in a cerebral aneurysm model for new stent design

Chang Ho Yu, Shuya Shida, Kaoru Matsumoto, Makoto Ohta

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

Abstract

The rupture of an aneurysm can lead to a subarachnoid hemorrhage, which can be a fatal illness in a large percentage of cases. In treating aneurysm intravascular stenting is thought as a better option compared with clipping treatment. The treatment of cerebral aneurysm with a porous stent also has recently proposed as a minimally invasive way to prevent rupture and favor coagulation mechanism inside aneurysm. The analysis of a flow pattern with and without stent in cerebral aneurysm model was performed with Particle Image Velocimetry (PIV). Three types of stents were used in the present investigation and the porosity of stent 1, 2 and 3 is 80%, 74% and 64 %, respectively. Reduced velocity, smaller average vorticity magnitude and different flow patterns inside aneurysm are observed when the three different proposed stents are used. The stent 3 (Porosity =64%) decrease the magnitude of the velocity by 98% and change the flow pattern in the aneurysm. Our results show that not only the role of the porosity but also the stent shape affect the flow and help us understand the characteristic of stent designs.

Original languageEnglish
Title of host publicationASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
Pages2073-2080
Number of pages8
EditionPARTS A, B, C, D
DOIs
Publication statusPublished - 2011 Dec 1
EventASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011 - Hamamatsu, Japan
Duration: 2011 Jul 242011 Jul 29

Publication series

NameASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
NumberPARTS A, B, C, D
Volume1

Other

OtherASME-JSME-KSME 2011 Joint Fluids Engineering Conference, AJK 2011
CountryJapan
CityHamamatsu
Period11/7/2411/7/29

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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