A device, system, and method effects mitral valve (30) annulus geometry of a heart. The device includes a first anchor configured to be positioned within and fixed to the coronary sinus of the heart adjacent the mitral valve annulus within the heart. A cable (34) is fixed to the first anchor (32) and extends proximately therefrom and slidingly through a second anchor (36) which is positioned and fixed in the heart proximal to the first anchor (32). A lock locks the cable to the second anchor (36) when tension is applied to the cable for effecting the mitral valve annulus geometry.
