A device for modifying the shape of a mitral valve annulus. In one embodiment, the device includes a connector disposed between first and second anchors, the first and second anchors each adapted to be deployed in a coronary sinus adjacent the mitral valve annulus to anchor the device in the coronary sinus; and an actuation element adapted to receive a proximally or distally directed actuation force from an actuator and to transmit the actuation force to the first and second anchors simultaneously. The invention also includes a system for modifying the shape of a mitral valve annulus, including a percutaneous deployment apparatus, including an actuator; and a percutaneous mitral valve annuloplasty device with a connector disposed between first and second anchors, the first and second anchors each adapted to be deployed in a coronary sinus adjacent the mitral valve annulus to anchor the device in the coronary sinus; and an actuation element adapted to receive a distally proximally directed actuation force from the actuator and to transmit the actuation force to the first and second anchors simultaneously. The invention also includes a method of using such devices and systems.