| A shape memory polymer dialysis needle adapter for the reduction of hemodynamic stress within arteriovenous grafts. | |
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MedLine Citation:
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PMID: 17867367 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A deployable, shape memory polymer adapter is investigated for reducing the hemodynamic stress caused by dialysis needle flow impingement within an arteriovenous graft. Computational fluid dynamics simulations of dialysis sessions with and without the adapter demonstrate that the adapter provides a significant decrease in the wall shear stress. Preliminary in vitro flow visualization measurements are made within a graft model following delivery and actuation of a prototype shape memory polymer adapter. Both the simulations and the qualitative flow visualization measurements demonstrate that the adapter reduces the severity of the dialysis needle flow impingement on the vascular access graft. |
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Authors:
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Jason M Ortega; Ward Small; Thomas S Wilson; William J Benett; Jeffrey M Loge; Duncan J Maitland |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: IEEE transactions on bio-medical engineering Volume: 54 ISSN: 0018-9294 ISO Abbreviation: IEEE Trans Biomed Eng Publication Date: 2007 Sep |
Date Detail:
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Created Date: 2007-09-17 Completed Date: 2007-10-19 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0012737 Medline TA: IEEE Trans Biomed Eng Country: United States |
Other Details:
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Languages: eng Pagination: 1722-4 Citation Subset: IM |
Affiliation:
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Lawrence Livermore National Laboratory, Livermore, CA 94551, USA. ortega17@llnl.gov |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Anastomosis, Surgical
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instrumentation* Biocompatible Materials / chemistry Blood Pressure Blood Vessel Prosthesis* Dialysis / instrumentation*, methods Elasticity Equipment Design Equipment Failure Analysis Needles* Polymers / chemistry* Stress, Mechanical |
| Grant Support | |
ID/Acronym/Agency:
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R01EB000462/EB/NIBIB NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Biocompatible Materials; 0/Polymers |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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