CBS News - Paralyzed patients walk again with help of spinal implant

«David Mzee was paralyzed for seven years until one of Switzerland's leading neurosurgeons gave him a spinal implant that changed his life. He is one of three patients with spinal cord injuries who are now able to walk again with targeted electrical stimulation of the spinal cord, scientists announced Wednesday. "This little device that is an impulse generator is giving impulses to the electrode that is located...»