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Kumar et al. Vessel Plus 2019;3:35 I http://dx.doi.org/10.20517/2574-1209.2019.006 Page 9 of 13
A
B
Figure 8. Radial displacement of PEEK 450G stent (Left) with artery (Right) at non-plaque (A) and plaque (B) regions when subjected to
0.8 MPa pressure load. PEEK: polyether ether ketone
Figure 9. The relation between radial displacement and pressure at non-plaque region
0.45 mm at plaque region. Higher the radial displacement, higher will be the blood flow rate. The radial
displacement of PEEK 450G is better both in plaque and non-plaque regions. Hence, PEEK 450G initiates
is a better material for coronary stent implants.
DISCUSSION
Von-mises stress
The results obtained for PEEK 450G stent in terms of von-mises stress, when subjected to 0.8 MPa pressure
load case as shown in Figure 11. Von-mises stresses of PEEK 450G stent against the inflating pressure at
non-plaque region as shown in Figure 12. As observe in Figure 12, maximum von-mises stress observed for
the maximum pressure of 1.2 MPa. It is noticed that von-mises stresses for PEEK 450G is 110 MPa for the
pressure load of 1.2 MPa at non-plaque. Figure 13 represents the relation between von-mises stress and pressure
at plaque region. The von-mises stress for PEEK 450G is 97 MPa at plaque region. Higher the von-mises stress
