In 1995, Sonospine founder and surgeon-in-chief Dr. Dilan Ellegala was a medical student on a neurosurgery rotation at the University of Washington in Seattle, where he was surprised to see surgical instruments developed in the 1930s and ’40s still being used to perform spinal fusions. Dr. Ellegala’s journey to find a better technique led him to the university’s Applied Physics Laboratory, where a team was developing ultrasonic technologies for the U.S. Department of Defense.
“My ‘aha moment’ was asking myself why can’t we use this in brain and spine surgery?” he says.
Compared to a rongeur (a surgical cutting plier) or high-speed drill, ultrasonic energy could deliver the pinpoint precision Dr. Ellegala desired. In today’s version of the tool, a 1-millimeter instrument tip vibrates at ultrasonic frequency, allowing the surgeon to pare away bone, discs or ligaments that are compressing a nerve, millimeter by millimeter, without destabilizing the spine.
Dr. Ellegala first started using ultrasonic surgery—which the FDA approved in 2001—for cranial surgery in 2002 and spine surgery in 2007. “Initially, I only used it for lumbar problems, but the range has dramatically increased into the mid back and neck,” he says. “We can now treat most spine issues without requiring a spinal fusion.”