Vascular Solutions announces settlement of patent lawsuit with Boston Scientific Vascular Solutions (VASC) announced that it has reached a settlement of its patent lawsuit with Boston Scientific Corporation (BSX) relating to patents in the area of coronary guide extension catheters. Vascular Solutions filed the original lawsuit in U.S. District Court for the District of Minnesota in May 2013, alleging that Boston Scientific infringed three patents owned by Vascular Solutions related to rapid exchange guide extension technology by manufacturing and selling its Guidezilla guide extension catheter. Boston Scientific filed a counterclaim in July 2013, alleging that Vascular Solutions infringed a patent owned by Boston Scientific related to rapid exchange guide extension technology by manufacturing and selling its GuideLiner guide extension catheter. As part of the settlement agreement, all litigation between the two parties related to guide extension will be dismissed. The terms of the settlement are confidential.