[Polymers modified by biologically active compounds--a new type of compatible material for contact with the blood]

Interaction of synthetic polymers, modified by heparin, trypsin or by their mixture, with blood and its components was studied. The modified polymers affected the blood-clotting system and caused hypocoagulation. The correlation was found between the hemocompatibility of the polymers and their efficiency in the action on the blood-clotting system.