Profile: Maquet-Dynamed, Inc. offers complete medical technology solutions for operating theatres and intensive care units, guaranteeing optimum treatment for patients and greatest-possible working comfort for personnel. On-Pump cardiac surgery is performed using cardiopulmonary bypass (CPB) or a heart-lung machine that supports critical physiological functions for the patient's body while the heart is being operated on. This is especially important and usually necessary during surgical procedures such as coronary artery bypass surgery, heart valve replacement and repair, the repair of congenital heart defects & certain vascular procedures. The VAVD controller is a mechanical regulator that allows vacuum to be regulated through a sealed venous reservoir with the intention of performing vacuum assisted venous drainage (VAVD) during cardiovascular procedures. Positive and negative pressure relief valves are incorporated into the VAVD. The rotaflow centrifugal pump offers the patient greater benefits of biocompatibility for improved, gentle blood handling in extracorporeal circulation.