1998 Purchased the security products business of Metorex International Oy
1998 Purchased a minority equity stake in Square One, Inc., (In 2000, acquired substantially all of Square One, Inc.’s assets)
1999 Acquired Aristo Medical Products, Inc.
1999 Formed OSI Medical, Inc.
2000 Formed RapiTec, Inc.
2001 Formed Dolphin Medical (merged OSI Medical, Inc. into Dolphin in March 2002)
2002 Acquired substantially all the assets of Thermo Centro Vision, Inc.,
2002 Purchased a minority equity interest in CXR Limited, (In December 2004 CXR Limited became a wholly owned subsidiary)
2002 Acquired all the outstanding capital stock of Ancore Corporation
2003 Acquired the military, laser-based training business of Schwartz Electro-Optics, Inc. (In November 2003, acquired substantially all remaining assets of Schwartz Electro-Optics, Inc.)
2003 Acquired substantially all of the assets of J&D Engineering (UK) Limited.
2004 Acquired Spacelabs Medical.
2005 Acquired Blease Medical Holdings Limited.
2006: OSI acquires Del Mar Reynolds, the British diagnostic cardiology company and adds it to the healthcare organization.
2022 Establishes New State of the Art Factory of 50K sq. ft. near RG International Airport (RGIA), Hyderabad India specializing in manufacturing of medical devices