US Patent 6926735 Multi-lumen vascular grafts having improved self-sealing properties

The present invention provides an implantable graft, including a primary tubular body having a first outer wall surface and a first inner wall surface defining a primary blood contacting lumen, and a secondary tubular body having a second outer wall surface and a second inner wall surface. The secondary tubular body is located about the primary tubular body to form a space therebetween. The primary and secondary tubular bodies are joined by at least one rib.