The Crimping and Expanding Performance of Self-Expanding Polymeric Bioresorbable Stents: Experimental and Computational Investigation
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Fabrication of Composite Polymeric Bioresorbable Stents (cPBRSs)
2.3. Crimping and Expanding Performance
2.4. Numerical Analysis
2.4.1. Material Models
Viscoelastic Material Modeling
Validation of the Material Models
2.4.2. Finite Analysis Procedure
2.5. Statistical Analysis
3. Results
3.1. Stress-Strain Curves of PPDO Monofilaments and cMYs
3.2. Crimping and Expanding Performance
3.3. Computational Results
3.3.1. Crimping Simulation Results
3.3.2. Balloon Expanding Simulation Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
Appendix A
Time (s) | Normalized Shear Creep Compliance j(t) ± SD | |
---|---|---|
PPDO Monofilaments | cMYs | |
1 | 1.00 ± 0.024 | 1.00 ± 0.036 |
60 | 1.06 ± 0.023 | 1.07 ± 0.029 |
300 | 1.12 ± 0.018 | 1.14 ± 0.027 |
600 | 1.14 ± 0.017 | 1.17 ± 0.025 |
900 | 1.16 ± 0.015 | 1.19 ± 0.024 |
1200 | 1.16 ± 0.013 | 1.21 ± 0.021 |
1500 | 1.17 ± 0.012 | 1.22 ± 0.020 |
1800 | 1.18 ± 0.013 | 1.23 ± 0.019 |
2100 | 1.18 ± 0.012 | 1.23 ± 0.018 |
2400 | 1.18 ± 0.013 | 1.24 ± 0.016 |
2700 | 1.19 ± 0.013 | 1.24 ± 0.017 |
3000 | 1.19 ± 0.013 | 1.25 ± 0.016 |
3300 | 1.19 ± 0.012 | 1.25 ± 0.016 |
3600 | 1.19 ± 0.013 | 1.26 ± 0.017 |
5400 | 1.20 ± 0.015 | 1.27 ± 0.019 |
7200 | 1.21 ± 0.017 | 1.28 ± 0.024 |
9000 | 1.21 ± 0.017 | 1.29 ± 0.029 |
10800 | 1.22 ± 0.019 | 1.30 ± 0.031 |
12600 | 1.22 ± 0.020 | 1.30 ± 0.034 |
14400 | 1.23 ± 0.024 | 1.31 ± 0.037 |
16200 | 1.23 ± 0.025 | 1.31 ± 0.037 |
18000 | 1.23 ± 0.028 | 1.31 ± 0.053 |
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Type of Yarns | Diameter/mm | Breaking Strength/MPa | Breaking Elongation/% | Melting Temperature/°C |
---|---|---|---|---|
PPDO monofilaments | 0.30 ± 0.01 | 433.17 ± 21.71 | 53.50 ± 1.09 | 102.73 ± 0.15 |
PCL multifilament | 0.14 ± 0.02 | 199.02 ± 0.01 | 47.64 ± 0.03 | 56.03 ± 0.21 |
cBYs | 0.48 ± 0.01 | 182.72 ± 15.92 | 55.61 ± 3.70 | - |
cMYs | 0.43 ± 0.01 | 221.49 ± 4.01 | 61.58 ± 6.20 | - |
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Zhao, F.; Liu, L.; Yang, Y.; Wang, F.; Wang, L. The Crimping and Expanding Performance of Self-Expanding Polymeric Bioresorbable Stents: Experimental and Computational Investigation. Materials 2018, 11, 2184. https://doi.org/10.3390/ma11112184
Zhao F, Liu L, Yang Y, Wang F, Wang L. The Crimping and Expanding Performance of Self-Expanding Polymeric Bioresorbable Stents: Experimental and Computational Investigation. Materials. 2018; 11(11):2184. https://doi.org/10.3390/ma11112184
Chicago/Turabian StyleZhao, Fan, Laijun Liu, Yang Yang, Fujun Wang, and Lu Wang. 2018. "The Crimping and Expanding Performance of Self-Expanding Polymeric Bioresorbable Stents: Experimental and Computational Investigation" Materials 11, no. 11: 2184. https://doi.org/10.3390/ma11112184