The CardiacBooster device is a percutaneous left ventricular support device (pVAD). The device system consists of a single-use disposable catheter comprising a pump head at its distal end, and an external pump console which controls the pump action of the device. The pump head of the catheter is placed in the left ventricle by minimally invasive, standard percutaneous technique. Once in place and active, the device pumps blood from the left ventricle through the aortic valve into the aorta by actuation of a small, inflatable balloon inside a miniature pump volume. Directionality of flow is ensured by the trans-aortic element and in-flow valves integrated into the outer shell of the pump volume.