Medtech companies raised $2.4 billion in the fourth quarter, the second-strongest of the year; Q4 device M&A deals totaled $9 billion in value, led by Allergan's $2.9 billion buy of Acelity's LifeCell division. Diagnostics financings finished out the year at $721 million, an increase over the previous quarter and 2016's second-highest quarter, but diagnostics M&A activity was the lowest of the year at $87 million, with only two completed acquisitions.