Cardiovascular Systems, Inc. is a medical device company focused on developing and commercializing interventional treatment systems for vascular disease. Between 8 and 12 million Americans suffer from peripheral arterial disease (PAD), which is caused by the accumulation of plaque in leg or foot arteries, reducing blood flow and leading to leg pain, and eventually tissue loss and amputation. The company s Diamondback 360 Peripheral Arterial System is capable of treating a broad range of plaque types both above and below the knee, and addresses many of the limitations associated with existing treatment alternatives.