| http://www.w3.org/ns/prov#value | - In another aspect, this invention is a system for occluding the flow of blood in the lumen of a vessel of a human vascular system comprising a guide catheter having proximal and distal ends and a lumen, a sheath having an interior surface and an exterior surface and being sized to be slidingly accommodated within the lumen of the guide catheter, and a sealing member connected adjacent the exterior
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