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Open AccessCommunication
J. Funct. Biomater. 2012, 3(1), 163-172; doi:10.3390/jfb3010163

Development of Ti-Coated Ferromagnetic Needle, Adaptable for Ablation Cancer Therapy by High-Frequency Induction Heating

1
Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan
2
Department of Environmental Materials Engineering, Niihama National College of Technology, Niihama 792-8580, Japan
3
Department of Electronic Control Engineering, Niihama National College of Technology, Niihama 792-8580, Japan
4
Department of Surgery, Graduate School of Medicine, Ehime University, Toon 791-0295, Japan
*
Author to whom correspondence should be addressed.
Received: 28 November 2011 / Revised: 1 March 2012 / Accepted: 2 March 2012 / Published: 6 March 2012
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Abstract

To develop a novel ablation therapy for human solid cancer, the heating properties of a ferromagnetic carbon steel rod and a prototype Ti-coated needle using this carbon steel rod, were investigated in several high-frequency outputs at 300 kHz. In the former, the heating property was drastically different among the three inclination angles (θ = 0°, 45° and 90°) relative to the magnetic flux direction as a result of the shape magnetic anisotropy. However, the effect of the inclination angles was completely eliminated in the latter. It is considered that the complete non-oriented heating property relative to the magnetic flux direction allows the precise control of the ablation temperature during minimally invasive thermotherapy without a lead-wire connected to a fiber-optic thermometer. This newly designed Ti-coated device will be suitable for clinical use combined with its superior biocompatibility for ablation treatments using high-frequency induction heating. View Full-Text
Keywords: cancer therapy; ablation treatment; high-frequency induction heating; AC magnetic field; shape magnetic anisotropy; magnetic flux direction; biocompatibility cancer therapy; ablation treatment; high-frequency induction heating; AC magnetic field; shape magnetic anisotropy; magnetic flux direction; biocompatibility
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Naohara, T.; Aono, H.; Maehara, T.; Hirazawa, H.; Matsutomo, S.; Watanabe, Y. Development of Ti-Coated Ferromagnetic Needle, Adaptable for Ablation Cancer Therapy by High-Frequency Induction Heating. J. Funct. Biomater. 2012, 3, 163-172.

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J. Funct. Biomater. EISSN 2079-4983 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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