MINNEAPOLIS--(BUSINESS WIRE)--Entellus Medical, a Minnesota-based medical technology company, today announced the launch of its XprESS™ Multi-Sinus Dilation Tool during the Combined Otolaryngology Spring Meetings (COSM) in Las Vegas. The Entellus XprESS Multi-Sinus Dilation Tool, which received FDA clearance in February 2010, offers Ear, Nose and Throat (ENT) surgeons a new balloon catheter-based technology for dilating frontal and sphenoid sinus spaces during sinus surgery for the treatment of chronic sinusitis.