DocumentCode :
47095
Title :
Influence of Fixation on Magnetic Properties of Glass-Coated Magnetic Microwires for Biomedical Applications
Author :
Hudak, Radovan ; Varga, Rastislav ; Hudak, Jozef ; Praslicka, Dusan ; Polacek, Irenej ; Klein, Peter ; El Kammouni, Rhimou ; Vazquez, Manuel
Author_Institution :
Dept. of Biomed. Eng. & Meas., Tech. Univ. of Kosice, Kosice, Slovakia
Volume :
51
Issue :
1
fYear :
2015
fDate :
Jan. 2015
Firstpage :
1
Lastpage :
4
Abstract :
The control of biomechanical processes in the tissue-implant interface and thermal changes created by friction or inflammatory processes in the implant and its environment represent the key validating processes of the postimplanting process. It is crucial for a patient and their health to minimize the invasiveness of the temperature measuring processes and the inner mechanical stress in the implant-tissue interface. For the purpose of these measurements, amorphous magnetic glass-coated microwires are the most suitable. Compared with other sensors, such as radio frequency identification sensors, the microwires have a significant advantage due to their dimensions (~2 cm × 50 μm) (because of which the sensor almost does not interfere with the inner implant structures), their production is relatively cheap, and only ~ 20 mm microwire is needed for the functional sensor. This paper is concerned with the testing of more types of microwire fixation in an implant and the impact of the fixation; it deals with necessary magnetic properties of a microwire and their dependence on the temperature. Microwire made of master alloy Fe78W5B17 was created and fixed in four ways: 1) on one end; 2) on two ends; 3) in the middle; and 4) along its full length. The results show that the optimal way of fixation is the one along the full length of a microwire; however, the final signal is influenced by both, the type and volume of the applied fixation material. The highest sensitivity of the designed microwire was in the range of 120-140 °C with no fixation and only with the full length fixation, this sensitivity decreased to 40-50 °C, which is a level close to the level required for biomedical applications (35-42 °C).
Keywords :
biological tissues; biomechanics; magnetic semiconductors; prosthetics; temperature sensors; amorphous magnetic glass-coated microwires; applied fixation material; biomechanical processes; biomedical applications; full length fixation; functional sensor; glass-coated magnetic microwires; implant inflammatory processes; implant-tissue interface inner mechanical stress; inner implant structures; master alloy Fe78W5B17; microwire implant fixation; microwire magnetic properties; middle fixation; one end fixation; optimal fixation; postimplanting process; radio frequency identification sensors; temperature measuring processes; tissue-implant interface; two end fixation; Magnetic domain walls; Magnetic domains; Magnetostriction; Temperature; Temperature measurement; Temperature sensors; Amorphous magnetic glass-coated microwires; magnetoelasticity; smart implants; switching field;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2014.2359498
Filename :
7029216
Link To Document :
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