Articles and procedures for preventing or treating vaginal prolapse, urinary incontinence, and other disorders of the pelvic floor. Stoppers are provided so that when a first movable section moves in the direction in which a penetrating portion penetrates a stator frame, a gap is created between driving electrodes and a movable-section driving electrode, with the stoppers lying opposite stoppers. A file might be transmitted, over the network, from the first computer. Then, the information processing apparatus can select the cryptogram that is a target of decoding on the basis of the key specifying code.