An artificial urinary sphincter (AUS) system includes a cuff (22), a pump (24), and a single tube (26) that provides the system with an inflatable storage compartment. The single tube is connected between the cuff and the pump and includes a first lumen (90)communicating between the cuff and the pump and a separate second lumen (92) communicating between the cuff and the pump. The cuff is inflatable with a cuff volume of liquid that is sized to selectively close the urethra for treatment of urinary incontinence. The pump is operable to move the cuff volume of liquid out of the cuff to provide the cuff with a deflated state that allows the urethra to open and pass urine. The second lumen has a storage compartment sized to retain the cuff volume ofliquid.
