MARLBOROUGH, Mass., May 7, 2018 /PRNewswire/ — CardioFocus, Inc. today announced that the U.S. Food and Drug Administration (FDA) has granted approval for the HeartLight Excalibur Balloon, a next-generation technology designed for the treatment of paroxysmal atrial fibrillation (PAF)*. The Excalibur Balloon leverages the proven universal […]