Novel Electromagnetic Targeting System for Navigating Surgery in Endobronchoscopy

Chen, C.; Lin, Cheng Hsin; Cheng, Yi‐Ming; Chung, Tien-Kan; Chang, Chin‐Yen; Tsai, Shih-Jen; Chen, Jenhui; Lin, Xi

doi:10.1109/intmag.2018.8508066

Cited by 1 publication

(1 citation statement)

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“…Recently, magnetic sensors [5,6,7,8,9,10,11,12,13,14,15] are developed for electromagnetic and magnetic navigating/targeting/tracking systems which become important alternative navigating/targeting/tracking approaches for surgical/clinical applications [16,17,18,19,20,21,22,23,24]. More recently, these magnetic sensor based electromagnetic navigations are integrated with standard EBUS as a hybrid system to perform a more accurate navigating/targeting endobronchoscope to target/locate lung tumors/lesions [25,26,27,28,29,30].…”

Section: Introductionmentioning

confidence: 99%

Passive Magnetic-Flux-Concentrator Based Electromagnetic Targeting System for Endobronchoscopy

Chen

Lin

Chang

et al. 2019

Sensors

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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. Due to the electromagnetic-induction, a voltage is induced in the receiving electromagnets-array. When the endobronchoscope’s guide sheath (with the silicon-steel collar) travels between the emitting coil and the receiving electromagnets-arrays, the magnetic flux is concentrated by the silicon-steel collar and thereby the induced voltage is changed. Through analyzing the voltage–pattern change, the location of the silicon–steel collar with the guide sheath is targeted. For testing, a bronchial-tree model for training medical doctors and operators is used to test our system. According to experimental results, the system is successfully verified to be able to target the endobronchoscope in the bronchial-tree model. The targeting errors on the x-, y- and z-axes are 9 mm, 10 mm, and 5 mm, respectively.

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