Abstract: A wheeled stretcher for transferring and carrying a person lying on a bed, such as an invalid, is shown wherein the height of the stretcher is low enough to go under the bed. A lifting device narrower than the width of the wheeled stretcher is provided in the middle but at a position offcenter in a transversal direction of the wheeled stretcher which can be moved in both longitudinal and transversal directions. A bed frame is attached to the top of the lifting device at approximately the center of the wheeled stretcher, and a bed mat is placed on the bed frame. The surface of the mat is covered with a transfer sheet which can be moved across the bed mat. To transfer a person lying on a bed onto the wheeled stretcher, the stretcher is placed beside the bed, the bed frame is once lifted over the bed, then is lowered onto the bed. Then the transfer sheet is moved to a side of the lying invalid person who is then put onto the sheet. The sheet is then moved to the original position at the center of the bed mat.