 MENLO PARK, Calif.--BUSINESS WIRE--Intersect ENT, Inc. Nasdaq: XENT, a global ear, nose and throat ENT medical technology leader dedicated to transforming patient care, today announced the U.S. nationwide commercial availability of the VenSureTM Balloon Sinus Dilation System and CubeTM4D Navigation System with VirtuEyeTM photo registration. The VenSure Balloon and Cube 4D Navigation Systems are used in procedures that are designed to improve debilitating chronic rhinosinusitis CRS sympt 