Experimental Tests on Fine Nitinol Wires Used in Medical Applications

Abstract:

Nitinol (NiTi) is a biocompatible nickel titanium alloy widely used in medical applications and devices. In anterior cruciate ligament (ACL) reconstruction surgery of the knee, fine wires of NiTi are used because of its high elasticity and good memory shape behavior. In surgical procedures these wires are exposed to mechanical stress and high deformations. This paper presents the results of the tests performed on fine NiTi wires of 1.1 mm and 0.73 mm in diameter, exposed to tensile load, which frequently appears in orthopedic surgery. The tests were done at a temperature of 37o C, in order to observe the influence of tensile stress on the mechanical properties of NiTi. The obtained material properties are in good correlation with data from manufacturers. These results are useful in durability evaluation of fine NiTi wires utilized in surgical procedures.

• Periodical: Solid State Phenomena (Volume 188)
• Pages: 65-69
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.188.65
• Online since: May 2012
• Authors: Mihaela Amarandei, Lucian Bogdan, Anghel Cernescu, Liviu Marşavina, Jenel Marian Pătraşcu, Dinu Vermeşan
• Keywords: ACL, Medical Device, Memory-Shape, NiTi, Wire

References

[1] E. Henderson , D.H. Nash, W.M. Dempster, On the experimental testing of fine Nitinol wires for medical devices, Journal of Mechanical Behavior of Biomedical Materials 4 (2011) 261 - 268.

DOI: 10.1016/j.jmbbm.2010.10.004

[2] A.R. Pelton, V. Schroeder, M.R. Mitchell, Fatigue and durability of Nitinol stents, Journal of Mechanical Behavior of Biomedical Materials 1 (2008) 153 - 164.

DOI: 10.1016/j.jmbbm.2007.08.001

[3] W.J. Buehler, R.C. Wiley, Nickel-Based Alloys, third ed., USA, 1965, p.147, 851.

[4] J.P. Espinos, A. Fernandez, A.R. Gonzalez-Elipe, Oxidation and diffusion processes in nickel-titanium oxide systems, Surface Science, 1993, 295(3), pp.402-410.

DOI: 10.1016/0039-6028(93)90287-t

[5] S. Kujala, A. Pajala, M. Kallioinen, A. Pramila, J. Tuukkanen, J. Ryhanen, Biocompatibility and strength properties of nitinol shape memory alloy suture in rabbit tendon, Biomaterials, 2004, 2004/1; 25(2), pp.353-358.

DOI: 10.1016/s0142-9612(03)00488-5

[6] J. Ryhanen, Biocompatibility of Nitinol, SMST-2000: The International Conference on Shape Memory and Superelastic Technologies, Pacific Grove USA, 2003, pp.251-259.

[7] L. H. Yahia, Shape Memory Implants, Berlin, (2000).

[8] T. Duerig, A. Pelton, D. Stockel, An overview of nitinol medical applications, Materials Science and Engineering A, 1999, pp.273-275, pp.149-160.

DOI: 10.1016/s0921-5093(99)00294-4

[9] T.W. Duerig, D.E. Tolomeo, M. Wholey, An overview of superelastic stent design. Minimally Invasive Therapy & Allied Technologies, 2000; 9(3/4), pp.235-246.

DOI: 10.3109/13645700009169654

[10] T.W. Duerig, K.N. Melton, D. Stockel, C.M. Wayman, Engineering Aspects of Shape Memory Alloys, London: Butterworth-Heinemann Ltd., (1990).

[11] T.W. Duerig, Applications of Shape Memory. Materials Science Forum, in Martensitic Transformations II, MuddleBC, 1990, pp.56-58, pp.679-692.

[12] T.W. Duerig, Present and Future Applications of Shape Memory and Superelastic Materials, Materials Research Society Symposium, 1995, p.360, pp.497-506.

[13] T.W. Duerig, K.N. Melton, Applications of Shape Memory in the USA, Igata N, Kimpara I, editors, New Materials and Processes for the Future, 1989, pp.195-200.

[14] M. Mertmann, S. Kautz, W. Brown, Design Principles and New Actuator Applications with NiTi Straight Wire Actuators, 2002, 8th International Conference on New Actuators, 10 – 12 June 2002, Bremen, S. 85 – 90.

[15] T. Waram, Design Principles for NiTi-Actuators, Engineering Aspects of Shape Memory Alloys, Butterworth-Heinemann Ltd, 1990, ISBN 0-750-61009-3, pp.234-244.

DOI: 10.1016/b978-0-7506-1009-4.50024-x

[16] A.R. Pelton, D. Stoeckel, T.W. Duerig, Medical Uses of Nitinol, 2000, pp.327-328, pp.63-70.

DOI: 10.4028/www.scientific.net/msf.327-328.63

[17] Information on http: /www. euroflex. gmbh. de.

[18] Information on http: /www. nitinol. com.