Paper Title:
Surface Characteristics and Hemocompatibility of Modified NiTi Alloy Intravascular Stents
  Abstract

TiO2, ZrO2 and titanium oxide in deficiency oxygen environment were used to modify the surface of biomedical NiTi stents. The coatings were prepared by vacuum deposition. The surface microstructures and characteristics, blood compatibility of the modified stents in simulated body fluids were assessed using scanning electron microscopy (SEM), hemolysis test, coagulation test and blood platelet adhesion test. The hemocompatiblity of the modified stents were all improved by layer coating. Enhancement of blood compatibility was believed to stem from the improved surface water affinity and hemolysis resistance of the layer, and titanium oxide in deficiency oxygen environment displayed better. This study indicated that layer coating was a promising effective modification method for improving the surface properties of biomedical NiTi alloy intravascular stents. As a coating materials,titanium oxide in deficiency oxygen environment was better than TiO2 and ZrO2.

  Info
Periodical
Materials Science Forum (Volumes 610-613)
Main Theme
Edited by
Zhongwei Gu, Yafang Han, Fusheng Pan, Xitao Wang, Duan Weng and Shaoxiong Zhou
Pages
1082-1089
DOI
10.4028/www.scientific.net/MSF.610-613.1082
Citation
Y. R. Ni, H. R. Huang, C. H. Lu, J. K. Xue, Z. Z. Xu, "Surface Characteristics and Hemocompatibility of Modified NiTi Alloy Intravascular Stents ", Materials Science Forum, Vols. 610-613, pp. 1082-1089, 2009
Online since
January 2009
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$32.00
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