Microstructured Nickel-Titanium Thin Film Leaflets for Hybrid Tissue Engineered Heart Valves Fabricated by Magnetron Sputter Deposition
Microstructured Nickel-Titanium Thin Film Leaflets for Hybrid Tissue Engineered Heart Valves Fabricated by Magnetron Sputter Deposition
复制标题
通过磁控溅射沉积制造混合组织工程心脏瓣膜的微结构镍钛薄膜小叶
DOI:
10.1007/s13239-015-0254-6
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发表时间:
2016
影响因子:
1.8
通讯作者:
Quandt E
中科院分区:
文献类型:
--
作者:
Loger K;Engel A;Haupt J;Lima de Miranda R;Lutter G;Quandt E
Heart valves are constantly exposed to high dynamic loading and are prone to degeneration. Therefore, it is a challenge to develop a durable heart valve substitute. A promising approach in heart valve engineering is the development of hybrid scaffolds which are composed of a mechanically strong inorganic mesh enclosed by valvular tissue. In order to engineer an efficient, durable and very thin heart valve for transcatheter implantations, we developed a fabrication process for microstructured heart valve leaflets made from a nickel-titanium (NiTi) thin film shape memory alloy. To examine the capability of microstructured NiTi thin film as a matrix scaffold for tissue engineered hybrid heart valves, leaflets were successfully seeded with smooth muscle cells (SMCs).In vitropulsatile hydrodynamic testing of the NiTi thin film valve leaflets demonstrated that the SMC layer significantly improved the diastolic sufficiency of the microstructured leaflets, without affecting the systolic efficiency. Compared to an established porcine reference valve model, magnetron sputtered NiTi thin film material demonstrated its suitability for hybrid tissue engineered heart valves.
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DOI:
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1962
期刊:
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作者:
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2016
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Journal of Biomedical Materials Research. Part B - Applied biomaterials
影响因子:
--
作者:
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通讯作者:
E. Quandt