Medical devices

The big got bigger in 2006, as acquisitions drove the revenue gains of the state's top two medical-device companies, Boston Scientific and Thermo Fisher. The year started with Boston Scientific's $27 billion purchase of troubled defibrillator maker Guidant Corp., and closed with Thermo Electron's $10.6 billion acquisition of Fisher Scientific, a company twice Thermo's size. The combined Thermo Fisher became the world's largest supplier of medical laboratory equipment for biotechnology firms, drug companies, and universities.
Ranked by revenue in 2006