SPUTNIK / SCIENCE PHOTO LIBRARY SPUTNIK / SCIENCE PHOTO LIBRARY
Editorial use only.
Testing artificial heart valves. Worker with a machine that simulates he pumping action of a human heart in order to test newly manufactured artificial heart valves. There are four valves in the human heart, all of which prevent the backflow of blood. Damage to the valves can lead to malfunctioning of the heart and death. If a valve cannot be repaired it must be replaced. Photographed at the Planar Corporation factory, Minsk, Belarus, in 2017.
Model release not available. Property release not required.