An implantable device is provided for controlling shape and/or size of an
anatomical structure or lumen. The implantable device has an adjustable
member configured to adjust the dimensions of the implantable device. The
implantable device is housed in a catheter and insertable from a
minimally invasive surgical entry. An adjustment tool actuates the
adjustable member and provide for adjustment before, during or after the
anatomical structure or lumen resumes near normal to normal physiologic
function.