BETHLEHEM, Pa.--(BUSINESS WIRE)--Invatec, a comprehensive innovator of interventional products, today announced that it has received 510(k) clearance from the U.S. Food and Drug Administration (FDA) to market its Amphirion Deep 150 mm Long PTA Balloon and Tapered 210 mm Long PTA Balloon in the United States. The Amphirion Deep Long Balloons join the preexisting Amphirion Deep family of dedicated below the knee (BTK) PTA catheters, which are specifically designed to reach, access and treat arteries below the knee.