A simple device that reduces strokes associated with atrial fibrillation is “the talk of the town,” reports a cardiovascular surgeon at Mercy Health. The conversation in northwest Ohio is being echoed throughout the country and the world, according to Dr. Daniel DiBardino. As awareness of atrial fibrillation has continued to grow, the 2020 FDA approval of the latest evolution of the Watchman device is garnering unprecedented attention. Manufacturer Boston Scientific Corp.