The invention relates to a pulsatile medical device enabling a blood flow to be circulated includingan external pipe presenting an inside wall, an outside wall, and two ends, one end being for connection to an ECC type machine, to a cardiac assistance system or to the patients body, and one end being for connection to the patients bodyan internal pipe inserted in said external pipe and presenting an inside wall, an outside wall, and two ends fastened all around their peripheries to the external pipe all around its periphery, the blood flow passing through said internal pipethe outside wall of the internal pipe and the inside wall of the external pipe defining a space for filling with fluid and being connectable via a connector port to an appliance for creating one or more inflations/deflations of said space, thereby creating one or more pulses in the blood flow.
