A muscle-powered pulsation device for cardiac support including a muscle energy converter device including a piston arrangement for directing fluid out of an outlet of the muscle energy converter device using energy provided by a patient's muscle, and a hydraulic volume amplification device fluidly connected to the muscle energy converter device. The volume amplification device includes a casing including an inlet and an outlet, the inlet in fluid communication with the outlet of the muscle energy converter device, at least one resilient member positioned within an interior cavity defined by the casing, and at least one piston member movably and sealingly positioned within the interior cavity of the casing and operatively connected to the at least one resilient member, the at least one piston member separating the interior cavity into a first chamber and a second chamber.
