Lisle-based Endotronix secures $45 million in financing for heart failure management system Tim Stumm 6 years ago Lisle-based Endotronix has secured $45 million in financing to support commercialization and federal approval of its heart failure management system.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.