Hey guys, a Reddit AmA just went live. Featured in the AMA are Dr. Glenn Green and Dr. Scott Hollister from University of Michigan. The have successfully 3D printed Tracheas saving the lives of 2 babies.

A bit about the process: The splints are custom-designed and custom-fabricated using high-resolution imaging and computer-aided design and were created directly from a CT scan of the babies’ trachea/bronchus. We then use the CT images to create a splint using a 3D printer out of a material called biopolymer. Once the splint is implanted during surgery, it acts as a scaffold as the tissue repairs itself. It’s then absorbed into the body over the next 3 years.
http://www.reddit.com/r/IAmA/comment...d_printer_ask/

Feel free to ask them any questions you may have about the process as well as where they see 3D Printing headed.