[Valve shunt for use in heart surgery and surgery on the great vessels]

Surgery with extracorporeal circulation must be carried out within temporary limits because of trauma to the blood by the pumping system and partly because of the oxygenators. For vascular replacement extracorporeal circulation can only conditionally be used because heparinization is required. The authors deviced a bypass for certain surgical interventions on the heart and thoracic aorta without the above mentioned drawbacks, which can be used for a longer period without pump and heparinization. This valve shunt stood all trials in experiment.