期刊
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
卷 85A, 期 4, 页码 1096-1102出版社
WILEY-LISS
DOI: 10.1002/jbm.a.31364
关键词
NiTi alloy; surface modification; intravascular stents; biocompatibility
Two different surface modification techniques were used to change the surface morphology and roughness of stents at the micrometer level, and eventually improve their surface adhesion properties with respect to endothelial cells. One was chemical erosion followed by sol-gel TiO2 coating, and the other was low temperature gas plasma deposition. After surface modification, the biocompatibility including the anticoagulation properties, hydrophilicity, and corrosion resistance of these stents was evaluated. It was found that both techniques could change the surface morphology of the stents with microroughness. In comparison with the control, the treated NiTi alloy intravascular stents showed increased surface hydrophilicity and enhanced anticoagulation properties. However, the corrosion properties of the stents were not improved significantly. (C) 2007 Wiley Periodicals, Inc.
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