Criticare Systems Inc. (CSI) is an international medical device company; we are also a subsidiary of Opto Cardiac Care Ltd.

In operation since 1984 in Waukesha, Wisconsin, USA, we develop, manufacture and market patient monitoring systems and accessories used in anesthesia, critical care, medical transport and outpatient care settings. We distribute our products through a world-wide direct sales and distributor network. The company is also active in developing highly technical niche markets through research and OEM partnerships.
At CSI, we are steadfast in our objective to provide the most advanced, affordable medical systems that reduce costs and improve patient management and safety in today's constantly changing healthcare environment. We are also committed to the development and application of proprietary technology across our product range; this gives us the advantage of having sole
control over features, performance, reliability and cost of systems.

Our facilities are ISO 13485 : 2003