a patient is sitting on the bed the patient transport device 1 is inserted beneath the legs and pelvic area with the buttocks resting on the seat 7 and the seat 7 is moved to the appropriate position on the rail bed 2 in order to move the patient accordingly the patient can be moved either laterally or longitudinally on a bed or from the bed to a dolly or wheelchair with minimum effort and with the help of only one other person referring again to fig4 7 of the drawings the patient transport device of this embodiment is used primarily to transfer patients to and from a bed to a dolly and from the dolly to x ray table and back under circumstances where the patient must remain in the prone position under these circumstances the patient is first moved from the center of the bed by conventional techniques or by use of the patient transport device illustrated in fig1 3 depending upon his or her condition when the patient is lying on the edge of the bed the patient transport device illustrated in fig4 7 is adjusted in height by operating the hydraulic cylinders 25 until the upper surface 23 of the body support 20 is slightly above the level of the bed the patient transport device 1 is then positioned close to the bed and the body support 20 is situated with one of the body support sides 22 projected beneath the patient and fully extended on the rails 3 the wheel stops 45 are then manipulated to prevent the wheels 44 from rolling and the patient is gently urged farther onto the body support 20 which is then slidably adjusted on the rails 3 away from the bed.