| Method to rotate an endovascular device around the axis of a vessel using an external magnetic field. | |
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MedLine Citation:
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PMID: 17278518 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A magnetic guidance methodology to rotate a device around the catheter axis is proposed. The specific medical application is to intracranial aneurysms. An endovascular device, the asymmetric stent, has a low porosity region that is rotated to cover the aneurysm neck so as to reduce the blood flow into and hence obliterate the aneurysm. The magnetic guidance system consists of a magnetic device attached to the asymmetric stent and an external homogeneous magnetic field of 0.1 T. This magnetic field puts a torque on the magnetic moment of the magnetic device, thereby rotating the stent for proper orientation. For the magnetic device with the required magnetic moment of 0.001 A m2, a cylindrical neodymium permanent magnet is proposed due to its favorable material characteristics while a coil electromagnet with iron core appears impractical due to demagnetizing effects. |
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Authors:
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E Florin; H S Rangwala; S Rudin |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Medical physics Volume: 34 ISSN: 0094-2405 ISO Abbreviation: Med Phys Publication Date: 2007 Jan |
Date Detail:
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Created Date: 2007-02-06 Completed Date: 2007-02-28 Revised Date: 2007-12-03 |
Medline Journal Info:
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Nlm Unique ID: 0425746 Medline TA: Med Phys Country: United States |
Other Details:
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Languages: eng Pagination: 328-33 Citation Subset: IM |
Affiliation:
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Toshiba Stroke Research Center, University at Buffalo (SUNY), Buffalo, New York 14214, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Vessel Prosthesis* Catheterization / instrumentation*, methods* Computer-Aided Design Equipment Design Equipment Failure Analysis Magnetics / instrumentation*, therapeutic use* Prosthesis Implantation / methods* |
| Grant Support | |
ID/Acronym/Agency:
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R01EB002873/EB/NIBIB NIH HHS; R01NS43924/NS/NINDS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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