Patent ID: 7637902

Claim:
A tubular device sized for introduction into a body lumen, the tubular device comprising: a main lumen extending between a proximal end and a distal end of the tubular device; an outer layer extending circumferentially about the main lumen and longitudinally between the proximal end and the distal end; and a reinforcing layer bonded to the outer layer and extending longitudinally between the proximal end and the distal end, the reinforcing layer including a first longitudinal edge, a second longitudinal edge and a longitudinally extending discontinuity, the reinforcing layer further extending circumferentially about the main lumen from the first longitudinal edge to the second longitudinal edge, and the longitudinally extending discontinuity being located between the first and second longitudinal edges; wherein at least one of the first and second longitudinal edges is defined by a loop to form another lumen that extends longitudinally and adjacent to the main lumen.