Coronary stents used to open a closed artery are made of a Ni-Ti alloy. This alloy has the property that it changes shape (and elastic properties) upon heating and return to their original shape (and elastic properties) upon cooling. Alloys of this class have been nicknamed shape memory alloys (SMA) or memory metal. In biomedical applications, the composition of the alloy is fine tuned for the shape change to occur at the body temperature. Materials research issues are ongoing to improve the biocompatability and long term reliability of the stents.
The main curriculum in this module was developed by Dr. Stacy Gleixner, San Jose State University
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This material is based upon work supported by the National Science Foundation under grant number DUE #0341633. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
This page is maintained by Prof. Stacy Gleixner.