Thoratec Corporation engages in the development, manufacture, and marketing of proprietary medical devices used for circulatory support. The company’s primary product lines include ventricular assist devices, such as HeartMate II, an implantable left ventricular assist device consisting of a rotary blood pump to provide intermediate and long-term mechanical circulatory support (MCS); and HeartMate XVE, an implantable and pulsatile left ventricular assist device for intermediate and longer-term MCS. Its ventricular assist devices also comprise Paracorporeal Ventricular Assist Device, an external pulsatile ventricular assist device, which provides left, right, and biventricular MCS approved for bridge-to-transplantation (BTT), including home discharge, and post-cardiotomy myocardial recovery; and Implantable Ventricular Assist Device, an implantable and pulsatile ventricular assist device designed to provide left, right, and biventricular MCS approved for BTT comprising home discharge, and post-cardiotomy myocardial recovery. The company also provides CentriMag, an extracorporeal full-flow acute surgical support platform that offers support up to 30 days for cardiac and respiratory failure. In addition, it offers PediMag and PediVAS extracorporeal full-flow acute surgical support platforms designed to provide acute surgical support to pediatric patients. The company sells its products through direct sales force in the United States, as well as through a network of distributors internationally. Thoratec Corporation was founded in 1976 and is headquartered in Pleasanton, California.