Patent ID: 8048034

Claim:
An apparatus sized for introduction into a body lumen and comprising a tubular device, the tubular device comprising: a main lumen extending between a proximal end and a distal end of the tubular device; a sheath body extending about the main lumen; and a circumferentially interrupted reinforcing layer attached to the sheath body and including first and second longitudinal edges, the first and second longitudinal edges defining a circumferential interruption, and each of the first and second longitudinal edges being defined by a loop; wherein the circumferential interruption extends as a longitudinal channel between the proximal and distal ends of tubular device; and the loop of the first longitudinal edge provides a first lumen of the tubular device, extending longitudinally alongside the main lumen thereof, and the loop of the second longitudinal edge provides a second lumen of the tubular device, also extending longitudinally alongside the main lumen thereof.