Effectiveness of variable stent designs for treatment of renal artery aneurysm
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Date
2018-05
Authors
Akmal Rafiq Akashah
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Abstract
This research analyzes different stent designs that are available in the market
namely Honeycomb, Coronary Stent and Medical stent to reduce the probability of Renal
Artery Aneurysm (RAA) from rupturing. The purpose of this research is to help reduce the
fatalities that commonly happens among pregnant due to impact of RAA. Particle Image
Velocimetry (PIV) is conducted experimentally and as a mean to validate using the
numerical solution for Renal Artery model. Fluid-structure-interaction (FSI) simulation
using Ansys is conducted to observe the velocity vector (flow pattern), pressure contour
and wall shear stress to determine the best stent design to be used in the RAA treatment.
From the results, it shows that Medical stent is the best stent for RAA treatment because it
can control the velocity and pressure which are 0.3m/s and 16000 Pa respectively along
the renal artery and especially the bulging of the aneurysm which should show velocity of
zero. Medical stent also shows controlled value of wall shear to prevent hemolysis. The
standard value that could lead to hemolysis is above 50 Pa. The risk of RAA rupturing also
decreases with the use of medical stent.