April 2026 Boston Scientific announced positive results from the CHAMPION-AF trial showing the WATCHMAN FLX™ left atrial appendage closure device met all primary safety and efficacy endpoints compared with oral anticoagulants.
March 2026 Clinical data presented at ACC.26 demonstrated that left atrial appendage closure was non-inferior to blood thinners for reducing stroke, cardiovascular death, and systemic embolism in patients with atrial fibrillation.
December 2025 The U.S. FDA approved a manufacturing process update for Boston Scientific's WATCHMAN FLX™ and WATCHMAN FLX™ Pro Left Atrial Appendage Closure Devices, adding an automated laser welding process to support production.