I remember reading about this technique, using inkjet technology for constructing artificial organs, a few years ago. It’s starting to pay off:

Cells seem to survive the printing process well. When layers of chicken heart cells were printed they quickly begin behaving as they would in a real organ. “After 19 hours or so, the whole structure starts to beat in a synchronous manner,” says Forgacs.

The future may be here sooner than we think. And it makes things like Larry Niven’s concern about people harvesting corpsickles for body parts seem pretty silly.