Device for modifying the shape of a body organ

Device (630) that affect the state of a ring of the mitral valve of a heart comprising: an elongated body sized for placement in the coronary sinus (614) adjacent the valve annulus of the mitral heart; a fastener (638) supported by the device, being adjustable fastener (638) from a first configuration that permits placement of the device in the coronary sinus (614) to a second configuration that anchors the device in the coronary sinus (614); characterized in that; the fastener (638) extends along the device (630) tightly separated from the device (630) body body when in the first configuration; the fastener (638) is elongated and has a first end coupled hingedly (640) to the device body, and wherein the fastener (638) is pivoted from the device body when in the second configuration to engage the coronary sinus (614) and anchor the device in the coronary sinus (614); and wherein the device has a lock (648) locking the fastener (638) in the second configuration.