sensors Article Passive Magnetic-Flux-Concentrator Based Electromagnetic Targeting System for Endobronchoscopy 1, 1,2,3,4, 1 1 1 Chin-Chung Chen y, Ching-Kai Lin y, Chen-Wei Chang , Yun-Chien Cheng , Jia-En Chen , Sung-Lin Tsai 1 and Tien-Kan Chung 1,5,* 1 Department of Mechanical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan;
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[email protected] (S.-L.T.) 2 Department of Internal Medicine, National Taiwan University Hospital, Taipei 10002, Taiwan 3 Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu 30059, Taiwan 4 Department of Medicine, National Taiwan University Cancer Center, Taipei 10672, Taiwan 5 International College of Semiconductor Technology, National Chiao Tung University, Hsinchu 30010, Taiwan * Correspondence:
[email protected]; Tel.: +886-3-571-2121 (ext. 55116) Co-First Author (Equal Contribution). y Received: 12 July 2019; Accepted: 15 November 2019; Published: 21 November 2019 Abstract: In this paper, we demonstrate an innovative electromagnetic targeting system utilizing a passive magnetic-flux-concentrator for tracking endobronchoscope used in the diagnosis process of lung cancer tumors/lesions. The system consists of a magnetic-flux emitting coil, a magnetic-flux receiving electromagnets-array, and high permeability silicon-steel sheets rolled as a collar (as the passive magnetic-flux-concentrator) fixed in a guide sheath of an endobronchoscope. The emitting coil is used to produce AC magnetic-flux, which is consequently received by the receiving electromagnets-array.