HeartWare International, Inc., a medical device company, designs, develops, manufactures, and markets miniaturized implantable heart pumps or ventricular assist devices (VAD) for the treatment of advanced heart failure in the United States, Germany, and internationally. It offers HeartWare Ventricular Assist System, which comprises a VAD or blood pump, patient accessories, and surgical tools designed to provide circulatory support for patients in the advanced stage of heart failure. The company is also developing the MVAD, a miniaturized blood pump intended for chronic heart failure patients; and SYNERGY Circulatory Support System, a partial support system designed to treat less sick, ambulatory, chronic heart failure patients who are not yet inotrope-dependent. The company markets its products directly to clinicians and medical facilities, as well as through medical device distributors. HeartWare International, Inc. is headquartered in Framingham, Massachusetts.