HEMOCOMPATIBILITY OF VARIOUS POLYMER GRAN ULATES

The adherence of platelets to different polymer granulates was examine d in a perfusion chamber filled with platelet-rich plasma. The surface area of each of the granulates war of a standardised size. The result s were compared with those found for a non-thrombogenic and a highly t hrombogenic foreign-body surface. The three polymers examined - Cryoli te, Styrolux and Zylar - must be considered non-thrombogenic. Platelet adherence to these substances is significantly less (3%) than that to a highly thrombogenic surface such as glass (95%). The three material s did not differ in terms of platelet adherence, and would appear to b e suitable potential materials for use in cell separators.