ST. PAUL, Minn.--(BUSINESS WIRE)--Cardiovascular Systems, Inc. (CSI) (Nasdaq: CSII), a medical device company developing and commercializing innovative interventional treatment systems for vascular disease, today announced preliminary revenue of approximately $18.7 million for the fiscal 2012 first quarter ended September 30, 2011, compared with $18.2 million in the first quarter of fiscal 2011.
