The Department of Veterans Affairs, VISN 7, Ralph H. Johnson VA Medical Center intends to issue a supply type purchase order for Watchman FLX LAA Closure Devices (4) 20MM, (4) 24MM, (5) 27MM, (4) 31MM and (3) 35MM for patients who are being treated with a Watchman implant. The implant device is implanted into the heart to close off the left atrial appendage, a blind pouch of heart tissue to prevent blood clots from forming in someone who has atrial fibrillation. The device reduces the risk os stroke and it may over time allow the individual to stop taking blood thinners.