The invention includes a catheter having an elongate main body having a proximal section and a distal section. The elongate main body further includes a first guidewire lumen and a second guidewire lumen. Each guide wire lumen including a proximal port and a distal port in communication with an external environment. The proximal port of the first guidewire lumen spaced by a gap from the distal port of the second guidewire lumen. In accordance with a further aspect of the invention, the catheter includes a plurality of overlapping stiffening members defined along at least a portion of a length between the distal end and the proximal end of the elongate main body.