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Fabrication of magnetic actuator for use in a capsule endoscope

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3 Author(s)
Sendoh, M. ; Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan ; Ishiyama, K. ; Arai, K.I.

In this paper, the authors propose applying a magnetic actuator to a capsule endoscope. Capsule-shaped magnetic actuators were fabricated and in vitro tests were examined. The magnetic actuator was composed of a capsule dummy, a permanent magnet inside the capsule, and a spiral structure. The actuator was rotated and propelled wirelessly by applying an external rotational magnetic field. It was demonstrated that the actuator with 1-mm height spiral could move at 5 mm/s. In addition, the torque required to start rotation was measured. The actuator has great potential for wireless operation of the capsule endoscope.

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Magnetics, IEEE Transactions on  (Volume:39 ,  Issue: 5 )