stairs-chair
n.— «The sheriff’s office has a list of handicapped individuals who work in the courthouse and deputies made sure all of those folks were safety evacuated. Firefighters used what’s called a “stairs-chair,” similar to a wheelchair to carry handicapped people down the six flights of stairs.» —“Courthouse evacuated after lightning starts fire” by Mitch Hotts Macomb Daily (Mount Clemens, Michigan) May 2, 2007. (source: Double-Tongued Dictionary)