A device for epicardial support and/or the assuming of cardiac activity having a double membrane (1) consisting of an elastic inner membrane (2) and a non-expandable outer membrane (3) as well as a closed cavity (4) formed there between which can be inflated and deflated by means of a fluid. With the objective of further developing a device of the type as indicated at the outset so that same can more simply and at substantially lesser risk administer medication to the pericardial sac, a second cavity (7) having a fluid-permeable wall limiting the second cavity (7) to the heart is provided at the inward facing side (6) of the inner membrane (2) to the heart (5) with this second cavity (7) being able to be filled with a fluid through a separate fluid line (9) from outside the patients body or fluid from within the body being able to be drained out.
