ABT acquires private AF-device company for $250M in cash: http://finance.yahoo.com/news/abbott-completes-acquisition-topera-inc-213000825.html Abbott (ABT) today announced that it has completed its acquisition of Topera, Inc., a private, venture-backed medical device company focused on developing innovative electrophysiology technologies to improve the diagnosis and treatment of atrial fibrillation... Catheter-based electrophysiology is an approximately $3 billion global market that has been growing annually at double-digit rates.