The<unk> was invented by Marian Ionescu, a British surgeon working at the General Infirmary in Leeds, England. He created this artificial bioprosthetic<unk> <unk> as a three-cusp structure made of chemically treated bovine pericardium attached to a Dacron cloth-covered titanium frame.
Pericardial heart valves
Heart valve
Electrical conduction system of the heart
Crisscross heart
Endobronchial valve
Atrioventricular node
Primary tumors of the heart
Coronary circulation