Patient bed having operration system for exercise of legs joints

The invention behavior is hinged to the actuating rod of the actuator is coupled to the present invention relates to a patient bed so inconvenient patients to be used, more specifically, inside the bar of a bed frame, and the inner vertical poles have a combination of stem having an elongated hinge , respectively hinged onto these work load and the stem to the extended band lower transfer projecting shank portion end load, by using the operation when each of the rod thereof of said actuator causes bending rotated thigh and shin part, footrest portion up and down, Since only a single actuator so Behavior movement by moving the hip and knee joints, ankle joints, such as the inconvenience patients effectively because it provides a smooth and comfortable locomotion in the leg joint of a patient to lie for a long time, yet able to maintain a flexible original function of the leg joints not having features that can be applied to the joints of physical therapy is for the patient bed with a workable structure of motion. Not, joints, exercise, actuators, load transfer, the operating rod, stem, patient, bed