Biomedical Engineering – From Theory to Applications

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Biomedical Engineering – From Theory to Applications
After the second implant was mounted by means of the two screws, the implants were
coupled by means of the Nitinol staple, which was previously cooled to -20 0C in a NaCl
liquid solution kept in a refrigerator. By cooling, the staple is opened and driven into each of
the two mounted modules. As the staple warms (possibly just upon heating to body
temperature) the pins return to their original shape, pulling the fracture together,
determining the translation of the modules and the separated parts of bone are compressed,
reducing the risks of wrong orientation or additional bones callus. Main stages of the
surgical experiment on the humerus bone of a cadaver are presented in Fig.46.
6. Acknowledgment
This work was supported by the funds of Ideas_92 Research Grant
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