Z. C. Lin, Abbott Vascular Inc., Santa Clara, CA; D. Mackwicz, K. Pike, Guidant Corporation, Santa Clara, CA; J. Boylan, Guidant Corporation, Temecula, CA
Bending fatigue resistance is demonstrated for Nitinol that has been modified to improve radiopacity. Specimens are subjected to strain levels required for endovascular medical device applications.
The fatigue resistance, in a bending mode at body temperature, used a sub-size specimen analogous to an endovascular stent strut. The testing was performed in strain control mode. Surface strain of the test specimens predicted by finite element method was verified by a micro-strain measurement technique.
Bending fatigue resistance is demonstrated for Nitinol that has been modified to improve radiopacity. Specimens are subjected to strain levels required for endovascular medical device applications.
The fatigue resistance, in a bending mode at body temperature, used a sub-size specimen analogous to an endovascular stent strut. The testing was performed in strain control mode. Surface strain of the test specimens predicted by finite element method was verified by a micro-strain measurement technique.
