Cardiovascular Systems, Inc. is a medical technology company. The Company is engaged in treating patients suffering from peripheral and coronary artery diseases, including those with arterial calcium. The Company develops an orbital atherectomy technology for both peripheral and coronary commercial applications. Its peripheral artery disease (PAD) systems are catheter-based platforms capable of treating a range of plaque types in leg arteries both above and below the knee. Its products include Diamondback 360 Peripheral Orbital Atherectomy System (OAS) (Diamondback 360 Peripheral), the Stealth 360 OAS (Stealth 360), Diamondback 360 Peripheral, Diamondback 360 60cm Peripheral, Diamondback 360 Low Profile Peripheral, Diamondback 360 1.50 Peripheral and Diamondback 360 2.00 Peripheral. The Company's coronary arterial disease (CAD) product, Diamondback 360 Coronary OAS (Coronary OAS), is marketed as a treatment for severely calcified coronary arteries.