| http://www.w3.org/ns/prov#value | - A vascular graft comprised of:a. a fibrous porous wall providing a flexible structure for tissue ingrowth and anchoring of the graft in the surrounding tissue; b. at least a portion of said fibrous porous wall being comprised of an elastomeric material such as silicone or polyurethane; c. said elastomeric material providing resilience to resist crushing or kinking of the graft; and, d. a spiral be
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