This narrated video demonstrates the process of intraspinal microinjection with use of a floating cannula. The cannula is introduced into the cord in rigid confirmation. After the microinjection needle is firmly seated into the spinal cord, the rigid outer cannula is withdrawn. The flexible silastic inner cannula is then able to move with cardioballistic and respiratory-associated cord movement. At microinjection completion, the outer cannula is returned to its original position and the injection cannula is withdrawn.

This video has been taken from Intraspinal Stem Cell Transplantation in ALS: A Phase I Safety Trial, Technical Note & Lumbar Safety Outcomes, an article that can be read here http://journals.lww.com/neurosurgery/… . It was submitted by corresponding author Nicholas Boulis, MD, at Emory University’s Department of Neurosurgery in Atlanta, Georgia.