Microcoil vaso-occlusive device with multi-axis secondary configuration
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United States of America Patent
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Dec 4, 2012
Grant Date -
Aug 17, 2006
app pub date -
Apr 5, 2006
filing date -
Sep 26, 2000
priority date (Note) -
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Abstract
A vaso-occlusive device includes a microcoil formed into a minimum energy state secondary configuration comprising a plurality of curved segments, each defining a discrete axis, whereby the device, in its minimum energy state configuration, defines multiple axes. Confinement of the device within an aneurysm causes it to assume a three-dimensional configuration with a higher energy state than the minimum energy state. Because the minimum energy state configuration of the device is larger (in at least one dimension) than the aneurysm, the deployed device is constrained by its contact with the walls of the aneurysm from returning to its minimum energy state configuration. The engagement of the device with the aneurysm wall minimizes shifting or tumbling due to blood flow.
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