Adjustable Stretcher Trolley Adjustable Stretcher Trolley Back is adjustable which makes the wounded feel comfortable. With safety lock, it must be locked up when transport the patients, and opened out when get on the ambulance. The mechanical foldaway legs are controlled by the handles on both ends of the stretcher. Legs can be folded under the stretcher automatically when loading into the vehicle. Can be locked by the fixing devices when on the ambulance car. With two straps, they can bind the wounded on both sides of the stretcher frame.