A Comparative Biocompatibility Analysis of Ternary Nitinol Alloys

Nitinol alloys are rapidly being utilized as the material of choice in a variety of applications in the medical industry. It has been used for self-expanding stents, graft support systems, and various other devices for minimally invasive interventional and endoscopic procedures. However, the biocomp...

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Bibliographic Details
Published in:Journal of materials engineering and performance 2009-08, Vol.18 (5-6), p.760-764
Main Authors: Haider, Waseem, Munroe, Norman, Pulletikurthi, Chandan, Gill, Puneet K. Singh, Amruthaluri, Sushma
Format: Article
Language:English
Subjects:
Biocompatibility
Characterization and Evaluation of Materials
Corrosion and Coatings
Corrosion resistance
Devices
Engineering Design
Intermetallics
Materials Science
Nickel titanides
Nitinol alloys
Patients
Quality Control
Reliability
Safety and Risk
Shape memory alloys
Tribology
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Summary:Nitinol alloys are rapidly being utilized as the material of choice in a variety of applications in the medical industry. It has been used for self-expanding stents, graft support systems, and various other devices for minimally invasive interventional and endoscopic procedures. However, the biocompatibility of this alloy remains a concern to many practitioners in the industry due to nickel sensitivity experienced by many patients. In recent times, several new Nitinol alloys have been introduced with the addition of a ternary element. Nevertheless, there is still a dearth of information concerning the biocompatibility and corrosion resistance of these alloys. This study compared the biocompatibility of two ternary Nitinol alloys prepared by powder metallurgy (PM) and arc melting (AM) and critically assessed the influence of the ternary element. ASTM F 2129-08 cyclic polarization in vitro corrosion tests were conducted to evaluate the corrosion resistance in phosphate buffered saline (PBS). The growth of endothelial cells on NiTi was examined using optical microscopy.
ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-009-9435-5