SHAPE MEMORY EMBOLIC PARTICLES HAVING A HIGH PACKING FRACTION
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United States of America Patent
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Issued Date -
Mar 24, 2011
app pub date -
Sep 21, 2009
filing date -
Sep 21, 2009
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Abandoned
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Abstract
An embolization system having a high packing fraction of embolic particles for use in occluding the flow of body fluid through a body vessel and a method for using such an embolization system are described. The embolic particles, which are made from a shape memory material, exhibit both a collapsed state and an expanded state. The embolic particles exhibit at least a bimodal particle diameter distribution in the collapsed state and expanded state with a particle packing fraction of at least about 0.85. The mixture of embolic particles is delivered into the body vessel in the collapsed state. The particle packing fraction of the mixture in its expanded state causes the occlusion of the flow of body fluid through the body vessel.
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