A flat backboard for an injured person to lie upon is supported between two rigid support poles. The support poles are connected at each end of the stretcher to each other by an elevated support assembly. The support assembly has a handlebar structure and a mount assembly this mount assembly has a central axle, around which the handlebar assembly fits, allowing for the handlebars to rotate without the mount assembly or the backboard rotating. When the holder of the handlebars generates a rocking motion, the central shaft rotates in the mount assembly, such that the weight of the injured person is supported by the mount assembly, but the rocking motion is not communicated to the mount assembly or the backboard.