Researchers from MIT have come up with a more practical model of bionic heart for testing out artificial valves and other cardiac machines. The design works as a real biological heart whose strong muscle tissue has been replaced with a soft robotic matrix of artificial heart muscles, resembling foam cape. Researchers named their model as a ‘biorobotic hybrid heart,’ that could represent the real mechanism of a real heart. Researchers ultimately came across the helical ventricular myocardial band theory, the idea that cardiac muscle is basically a big helical band that binds around all of the heart’s ventricles.