MULTIPLE-LAYERED LEAK-RESISTANT TUBE

摘要

The tubular device for carrying liquids or gases employs two or more concentrically mounted tube elements (110 and 112) that are adapted to move relative to one another following puncture and removal of the puncturing device. This relative movement creates a discontinuous opening through the device that is resistant to fluid leakage. Additionally, one of the tubular elements may be corrugated. A corrugated tube element forms a flap when punctured, which assists in the sealing of the hole. The device of the present invention is particularly useful as an implantable device, such as a vascular graft.