155 N. Wacker Drive Suite 4500
(corner of W. Randolph St & N. Wacker Dr)
2525 West End Avenue Suite 1250
(corner of Natchez Trace & West End Avenue)
Atritech was a clinical stage medical device company and developed the Watchman (a device to treat atrial fibrillation). Atritech was acquired by Boston Sciences in 2011.