Mitra clip is a tiny device may be effective in treatment of heart failure.Patients with severe heart failure often are gravely ill, too sick to have open-heart surgery to have mitral valves replaced.But the new procedure is much less invasive than open-heart surgery.A cardiologist threads the device to the heart through a blood vessel in the groin. Once it reaches the heart, the MitraClip is guided to the valve, and the device is used to clip the two flaps together.