Self-expanding aortic valve stent-material optimization.
Vascular support structures are important devices for treating valve stenosis. Large population of patients is treated for valvular disease and the principal mode of treatment is the use of percutaneous valvuloplasty. Stent devices are proving to be an improved technology in minimal invasive cardiac...
| Publicado en: | Computers in Biology & Medicine Vol. 42; no. 11; pp. 1060 - 1064 |
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| Autores principales: | , , , |
| Formato: | Journal Article |
| Publicado: |
Elsevier B.V.
Nov2012
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104391865&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104391865 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00104825 JC2 jtl: Computers in Biology & Medicine issn: 00104825 maglogo: N pubinfo: dt: Nov2012 vid: 42 iid: 11 pid: 82545 pub: Elsevier B.V. place: Philadelphia, Pennsylvania artinfo: ui: 104391865 NLM22981766 2011788111 10.1016/j.compbiomed.2012.08.007 NLM22981766 104391865 ppf: 1060 ppct: 4 formats: tig: atl: Self-expanding aortic valve stent-material optimization. aug: au: Kumar GP Mathew L Kumar, Gideon Praveen Mathew, Lazar affil: Department of Engineering Mechanics, Institute of High Performance Computing, A(*)Star, Singapore 138632, Singapore sug: subj: Aortic Valve Heart Valve Prosthesis Materials Testing Models, Theoretical Stents Computer-Aided Design Finite Element Analysis Mechanics Prosthesis Design ab: Vascular support structures are important devices for treating valve stenosis. Large population of patients is treated for valvular disease and the principal mode of treatment is the use of percutaneous valvuloplasty. Stent devices are proving to be an improved technology in minimal invasive cardiac surgery. This technology now accounts for 20% of treatments in Europe. This new technology provides highly effective results at minimal cost and short duration of hospitalization. During the development process, a number of specific designs and materials have come and gone, and a few have remained. Many design changes were successful, and many were not. This paper discusses the physical behavior of a hooked percutaneous aortic valve stent design using a finite element analysis. Specifically, the effects of crimping was simulated and analyzed for two types of realistic but different Nitinol materials (NITI-1 and NITI-2). The results show that both NITI-1 and NITI-2 had good crimping performance. The analysis performed in this paper may aid in understanding the stent's displacement ranges when subjected to physiological pressures exerted by the heart and cardiac blood flow during abnormal cardiovascular conditions. It may also help to evaluate the suitability of a Nitinol for fabrication purposes. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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