4. Boston Scientific
WatchmanThe Watchman from Boston Scientific is a left atrial appendage closure device that helps reduce stroke risk. It is an alternative to long-term warfarin therapy in patients with non-valvular atrial fibrillation.
Boston Scientific’s Watchman device is delivered through a transfermoral approach that is designed to close the left atrial appendage to prevent migration of blood clots, according to the company. Because it prevents blood clots, the device reduces the risk of stroke and systemic embolism.