The soft artificial heart (SAH) was created from silicone with the help of 3D printing technology. The SAH is a silicone monoblock. It weighs 390g, has a volume of 679 cm3 and is operated through pressurized air. "Our goal is to develop an artificial heart that is roughly the same size as the patient’s own one and which imitates the human heart as closely as possible in form and function" says Cohrs in an interview. The SAH fundamentally moves and works like a real heart but currently only beats for 3000 beats (which corresponds to a duration of 30 to 50 minutes for an average individual's heart beat)