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Novel transcatheter aortic heart valves exhibiting excellent hemodynamic performance and low-fouling property
Guo, F.; Jiao, K.; Bai, Y.; Guo, J.; Chen, Q.; Yang, R.; Zhang, X.
2019
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN1005-0302
Volume35Issue:1Pages:207-215
AbstractTranscatheter aortic heart valves (TAHVs) have been widely used for aortic valve replacements, with less trauma and lower clinical risk compared with traditional surgical heart valve replacements. In the present study, composites of poly(ethylene glycol) diacrylate (PEGDA) hydrogels and anisotropic high-shrinkage polyethylene terephthalate/polyamide6 (PET-PA6) fabric (PEGDA/PET-PA6) were fabricated as artificial heart valve leaflets. Dynamic mechanical analyses (DMA) indicated that PEGDA/PET-PA6 composites possessed anisotropic mechanical properties (i.e., storage moduli similar to 23.30 +/- 1.36 MPa parallel to the aligned fabric fibers and similar to 9.68 +/- 0.90 MPa perpendicular to the aligned fibers at 1 Hz) that were comparable to aortic valve leaflets. The PEGDA/PET-PA6 composites with smooth surfaces were highly hydrophilic (contact angle similar to 41.6 degrees +/- 3.8 degrees) and had low-fouling properties without platelet adhesion, suggesting a low risk of thrombogenicity when they interacted with blood. Furthermore, transcatheter aortic heart valves were fabricated using nitinol self-expanding frames and PEGDA/PET-PA6 composites as artificial leaflets, which presented excellent hemodynamic performance with a large orifice area (1.75 cm(2)) and low regurgitation (3.41%), thus meeting the requirements of ISO 5840-3 standard. Therefore, PEGDA/PET-PA6 composites had suitable mechanical properties, good biocompatibility, and low-fouling properties, indicating that they might be used for TAHVs in the future. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
KeywordTranscatheter aortic heart valve Textile fabric Poly(ethylene glycol) diacrylate Anti-fouling
Indexed BySCI
Language英语
WOS IDWOS:000449263900028
PublisherJOURNAL MATER SCI TECHNOL
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81520
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Guo, F.,Jiao, K.,Bai, Y.,et al. Novel transcatheter aortic heart valves exhibiting excellent hemodynamic performance and low-fouling property[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(1):207-215.
APA Guo, F..,Jiao, K..,Bai, Y..,Guo, J..,Chen, Q..,...&Zhang, X..(2019).Novel transcatheter aortic heart valves exhibiting excellent hemodynamic performance and low-fouling property.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(1),207-215.
MLA Guo, F.,et al."Novel transcatheter aortic heart valves exhibiting excellent hemodynamic performance and low-fouling property".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.1(2019):207-215.
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