A breakthrough 3-D-printed device that could someday help patients with long-term spinal cord injuries regain some function has been developed by the team of engineers at the University of Minnesota. A 3-D-printed guide, made of silicone, serves as a platform for specialized cells that are then 3-D printed on top of it. The guide would be surgically implanted into the injured area of the spinal cord where it would serve as a type of bridge between living nerve cells above and below the area of injury. The hope is that this would help patients alleviate pain as well as regain some functions like control of muscles, bowel, and bladder. A bioengineered spinal cord is fabricated via extrusion‐based multi-material 3D bioprinting.