Nonthrombogenic polymers - Designs and evaluation

New nonthrombogenic polymers were designed with attention to the surface of biological membranes, that is, the surface was completely covered with phospholipids adsorbed from plasma. The polymers with phospholipid polar group, 2-methacryloyloxyethyl phosphorylcholine polymers, could interact with phospholipids in plasma selectively and strongly. The adsorbed phospholipids on the polymer surface were concentrated, organized each other and then formed a self-assembled biomimetic membrane surface. The surface showed excellent resistance for both protein adsorption and blood cell adhesion.