Thoratec Heartmate II Left Ventricular Assist System (LVAS). Model/Catalog Number 1355 and Model/Catalog Number 102139. || Product is manufactured and distributed by Thoratec Corporation, || Pleasant, CA. || The HM II LVAS is intended to provide hemodynamic support in patients with end-stage, refractory left ventricular heart failure; either for temporary support, such as a bridge to cardiac transplantation or myocardial recovery, or as permanent destination therapy. The HeartMate II is intended for use inside or outside the hospital.