Occlusion device with non-thrombogenic properties

摘要

A method of forming a PVA foam structure for use in an occlusion device such that the PVA foam structure comprises non-thrombogenic properties. The method comprises forming a PVA gel and incorporating heparin into the PVA gel. The PVA foam structure is then treated with the PVA gel and heparin mixture, such as by soaking the PVA foam structure in the gel.