DeltaV Technology

The pumping functions of the heart have engaged researchers for centuries. The view on how the heart pumps has varied several times during the last centuries. The last change of view occurred during the 1950s when the heart was considered to pump with squeezing movements. Before then the common opinion during a 100 year period was that the heart pumps with piston like movements. This view is now again gaining ground, thanks to the magnetic resonance imaging technology pictures of the heart.

Already in 1979, MD. PhD. Stig Lundbäck could determine that the heart pumps with a back and forth movement of a spherical piston and not, as generally believed at that time, with squeezing movements. The piston is formed of the ventricular plane in between the auricle and the ventricle and by the right and left ventricular muscular suppressions against this plane.

The piston is designed in a very unique way. It has surfaces that besides pumping the blood also create small external volume changes, DeltaV. These volume changes give the heart its unique pumping and regulating functions, which have never before been described and which constitute the basis for a new group of pumps, Dynamic Displacement Pumps, DDP.

DeltaV contributes to that the piston can return to a new initial position. Symbolically the DeltaV function gives the same functions as the connecting-rod, crank and the flying wheel have in a stroke engine with the difference that the DeltaV functions are dynamic and can change the stroke volume depending on the inflow and also cause the inlet valves to be closed by the inflow.

In sum, the heart belongs to a completely new group of pumps, Dynamic Displacement pumps, which are controlled by the inflow and therefore are able to keep both circulatory systems, the pulmonic and systemic systems in perfect balance. The question how the heart has been able to keep both circulatory systems in perfect balance has consequently been answered.