Waters Medical Systems is one of the leading renal perfusion and cardiac monitoring companies in Minnesota. Located in Minneapolis, WMS provides solutions for kidney preservation prior to transplants and whole blood oximetry for cardiac catheterization laboratories. In 2007, Waters Medical Systems was sold from Zareba Systems to Groupe CAIR, a medical device company based in Lyon, France. Founded in 1987, Groupe CAIR is also the parent of Institut Georges Lopez, which has been a distributor of Waters Medical Systems since 2002. Waters Medical Systems was founded in 1940.