Polyurethane is widely used in cardiovascular application because of its better physio-chemical and mechanical properties. Moreover, polyurethane is highly bio-compatible which allows unrestricted usage in blood contacting devices. It has high shear strength, elasticity and transparency. The surface of PU has resistance for microbes and thrombosis formation. Conventionally, segmented polyurethanes (SPUs) have been used for various cardiovascular applications such as valve structures, pacemaker leads and ventricular assisting devices.
