A New Approach to Stress Analysis of Vascular Devices Using High Resolution Thermoelastic Stress Analysis |
| Journal |
Applied Mechanics and Materials (Volumes 5 - 6) |
| Volume |
Modern Practice in Stress and Vibration Analysis VI |
| Edited by |
Patrick Sean Keogh |
| Pages |
63-70 |
| DOI |
10.4028/www.scientific.net/AMM.5-6.63 |
| Online since |
October, 2006 |
| Authors |
James Eaton-Evans,
Janice M. Dulieu-Barton,
Edward G. Little,
Ian A. Brown
|
| Keywords |
Angioplasty, Nitinol, Stent, Thermoelastic Stress Analysis |
| Abstract |
Thermoelastic Stress Analysis (TSA) is a non-contacting technique that provides full
field stress information and can record high-resolution measurements from small structures. The
work presented in this paper summarises the application of TSA to two types of small medical
devices that are used to treat diseased arteries; angioplasty balloons and vascular stents. The use of
high resolution optics is described along with a calibration methodology that allows quantitative
stress measurements to be taken from the balloon structure. A brief account of a study undertaken to
characterise the thermoelastic response from Nitinol is also included and it is demonstrated that
thermoelastic data can be obtained from a stent at high resolutions. |
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