An intra-cardiac medical device adapted to enhance intra-cardiac blood circulation of a heart of a patient by assisting left ventricular pump action, said device having a blood displacement unit adapted to circulate blood from the left ventricle to the aortic valve by displacement of blood in the left atrium and/or left ventricle towards an apex of the heart and/or to said aortic valve, thus assisting left ventricular pump action.
