Sunshine Heart, Inc. is a medical device company. The Company operates through cardiac and coronary disease products segment. The Company is focused on developing, manufacturing and commercializing its C-Pulse Heart Assist System (the C-Pulse System) for treatment of Class III and ambulatory Class IV heart failure. The C-Pulse System is based on the concept of counterpulsation applied in an extra-aortic approach to assist the left ventricle by reducing the workload required to pump blood throughout the body, while increasing blood flow to the coronary arteries. Once implanted, the C-Pulse cuff is positioned around the patient's ascending aorta above the aortic valve. An electrocardiogram sensing lead is then attached to the heart to determine timing for cuff inflation and deflation in synchronization with the heartbeat.