An implantable girth control device for controlling urinary incontinence by placing the device around the urethra. The device comprising an adjustable resilient circumferential collar comprising a strap for embracing the urethra, the strap having two inflatable/deflatable expandable members, the first expandable member is a fluid filled expandable member that is affixed to an inner portion of the strap and in contact with the urethra, the second expandable member is affixed to an outer portion of the strap and is in fluid communication with the first expandable member over a valve. The valve is configured facilitate fluid transfer between the two members in response to changes in urethral pressure and to control a collar pressure applied by the device onto the urethra.
