Cardiovascular Systems to Present Pivotal Orbit II Coronary Data at the 2013 American College of Car

Cardiovascular Systems to Present Pivotal Orbit II Coronary Data at the 2013 American College of Cardiology Conference

ST. PAUL, Minn., & SAN FRANCISCO--(BUSINESS WIRE)-- Cardiovascular Systems, Inc. (CSI) (NAS: CSII) , will present data from its ORBIT II study of coronary artery disease at the 2013 American College of Cardiology (ACC) conference in San Francisco, Mar. 9-11, 2013. This marks the first time CSI will share results from this landmark pivotal trial, which is the first Investigational Device Exemption (IDE) study in history to seek approval for treating severely calcified coronary lesions.

ORBIT II is evaluating the safety and effectiveness of the company's orbital atherectomy technology in treating this problematic subset of patients. Moderate to severe arterial calcium is present in nearly 40 percent of patients undergoing a percutaneous coronary intervention, according to estimates. Moderate to severe calcium contributes to poor outcomes and higher treatment costs in coronary interventions when traditional therapies are used, including a significantly higher occurrence of death and major adverse coronary events. A coronary application would open up a large, underserved market opportunity for CSI, estimated to exceed $1.5 billion annually in the United States.

CSI completed ORBIT II enrollment of 443 patients at 49 U.S. medical centers in November 2012. CSI is targeting the end of March to submit its Premarket Approval application to the Food and Drug Administration (FDA).

CSI Booth at ACC: Mar. 9 - 11

Visit CSI at booth #N6257 9:30 a.m. - 4:45 p.m. Saturday, Mar. 9, and Sunday, Mar. 10; and 9:30 a.m. - 2 p.m. Monday, Mar. 11, to meet the company's calcium experts and learn more about CSI's unique orbital technology.

About Coronary Artery Disease
Coronary Artery Disease (CAD) is a life-threatening condition and leading cause of death in men and women in the United States. CAD occurs when a fatty material called plaque builds up on the walls of arteries that supply blood to the heart. The plaque buildup causes the arteries to harden and narrow (atherosclerosis), reducing blood flow. The risk of CAD increases if a person has one or several of the following: high blood pressure, abnormal cholesterol levels, diabetes, or family history of early heart disease. CAD affects an estimated 16.8 million people in the United States and is the most common form of heart disease. Heart disease claims more than 600,000 lives, or 1 in 4 Americans, in the United States each year.

About Cardiovascular Systems, Inc.
Cardiovascular Systems, Inc., based in St. Paul, Minn., is a medical device company focused on developing and commercializing innovative solutions for treating vascular and coronary disease. The company's Orbital Atherectomy Systems treat calcified and fibrotic plaque in arterial vessels throughout the leg in a few minutes of treatment time, and address many of the limitations associated with existing surgical, catheter and pharmacological treatment alternatives. The U.S. FDA granted 510(k) clearance for the use of the Diamondback Orbital Atherectomy System in August 2007. To date, over 100,000 of CSI's devices have been sold to leading institutions across the United States. CSI has also commenced its ORBIT II Investigational Device Exemption clinical trial to evaluate the safety and effectiveness of its orbital technology in treating coronary arteries. The coronary system is limited by federal law to investigational use and is currently not commercially available in the United States.

For more information, visit the company's website at www.csi360.com.

Cardiovascular Systems, Inc.
Investor Relations, 651-259-2800
investorrelations@csi360.com
or
Sarah Wozniak, 651-259-1636
swozniak@csi360.com
or
Padilla Speer Beardsley Inc.
Matt Sullivan, 612-455-1709
msullivan@padillaspeer.com
or
Dave Folkens, 612-455-1741
dfolkens@padillaspeer.com

KEYWORDS: United States North America California Minnesota

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