Pulmonary Artery

The pulmonary arteries carry blood from heart to the lungs. They are the only arteries (other than umbilical arteries in the fetus) that carry deoxygenated blood.

vascular tissue engineering
With printable organs, bringing a patient back to more long lived heart health can't be far off either.

http://www.livescience.com/technology/091229-3d-bioprinter.html

New Method to Grow Arteries Could Lead to 'Biological Bypass' for Heart Disease http://www.sciencedaily.com/releases/2010/03/100308182507.htm

http://en.wikipedia.org/wiki/Pulmonary_artery