The Aros Heart was invented by MD Azad Najar with the aim of developing an alternative total artificial heart (TAH) with the potential to become even more compatible with the human body in comparison to earlier attempts. The new design is seen as the one closest possible to a natural heart from both an anatomic and a physiological point of view.

The major part of the pumping function of the heart is provided by back and forth motion of the atrioventricular plane. A pump based on this concept, Dymnamic Displacement Pump (DDP), is a better concept from a physiological point of view than the conventional Pneumatic Displacement Pump (PDP) that is used in many current TAHs and VADs. The Aros Heart is based on the Dynamic Displacement Pump principle. The Aros Heart actually contains two pumps - each of which has an atrium and a ventricle - making it a four chambre artificial heart that is very similar to the natural heart.

The atria are separated from the ventricles by a plane, resembling the atrioventricular plane (AV-plane) in the natural heart. The pumping function is provided by the linear movement of this plane towards and away from the heart apex. The artificial AV-plane, contains four valves that function similarly to those in the natural heart and control the flow of the blood.

During the initial stage of systolic phase, the AV-plane starts to move toward the tip (apex) of the heart. The atrioventricular valves (AV-valves) close, resulting in an increase of the pressure in the ventricles and therefore pump blood out of the heart. As the AV-plane reaches its end position, it returns and moves upwards. The change in pressure differences open the AV-valves and the blood flows from the atriums into the ventricles. These phenomena are currently under investigation by means of theoretical modelling in order to identify the characteristics of the blood flow in the Aros Heart.