| http://www.w3.org/ns/prov#value | - Blood permeable sac 75 is affixed to the distal portion of the interior surface of tubular segment 72, and filters blood passing therethrough when filter element 70 is deployed. [0069] In a preferred embodiment, tubular segment 72 comprises a shape-memory alloy, such as nitinol, which has been processed to assu
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