Method and apparatus for the deployment of vaso-occlusive coils
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United States of America Patent
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Aug 10, 2010
Grant Date -
Oct 11, 2007
app pub date -
Apr 5, 2006
filing date -
Apr 5, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A vaso-occlusive delivery device includes an elongate delivery member which may take the form of a core wire. An actuating member is disposed at or adjacent to the distal end of the delivery member. The actuating member includes an electroactive polymer that can be selectively biased to an expanded or non-expanded state by application of direct current of different polarities. A vaso-occlusive device such as a coil may be detachably secured to the delivery device by expanding the actuating member within a proximal end of the coil to form an interference or friction fit using a first direct current polarity. The coil may be disengaged from the delivery member by application of direct current of a second, opposite polarity.
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