Fabrication and Evaluation of Nitinol Thin Film Heart Valves
Fabrication and Evaluation of Nitinol Thin Film Heart Valves
复制标题
镍钛诺薄膜心脏瓣膜的制造和评估
DOI:
10.1007/s13239-014-0194-6
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发表时间:
2014
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;Lima de Miranda R;Engel A;Marczynski-Bühlow M;Lutter G;Quandt E
In recent years new innovations improved the technology of devices for transcatheter heart valve replacement. In order to fabricate an efficient, durable, less thrombogenic and very thin heart valved stent for transcatheter implantation, heart valve leaflets of Nitinol (NiTi) thin film were developed. This work presents a method to fabricate NiTi thin film leaflets for transcatheter aortic valve replacements. NiTi valve leaflets were fabricated in different film thicknesses (10, 15 and 20µm) by magnetron sputter deposition and a subsequent forming process. Pulsatile testing was performed to investigate the transvalvular pressure differences during systole and diastole as well as the effective orifice area of the valves. Furthermore, the steady backflow leakage rate under hydrostatic pressure was evaluated. Two samples from Edwards Lifescience (SAV 19 mm, and Perimount Magna 25 mm) were taken as a reference. In this experimental study, we present firstin vitrotest results of the newly developed NiTi leaflets.
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DOI:
10.1016/s0735-1097(02)01822-3
发表时间:
2002-05-15
影响因子:
24
作者:
Bonhoeffer, P;Boudjemline, Y;Sidi, D
通讯作者:
Sidi, D
影响因子:
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I. Palacios
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
A. Melzer;D. Stoeckel
通讯作者:
D. Stoeckel
DOI:
--
发表时间:
2013
期刊:
Journal of materials engineering and performance (Print)
影响因子:
--
作者:
G. Siekmeyer;A. Schüßler;R. L. Miranda;E. Quandt
通讯作者:
E. Quandt