Capsule Micromechanism Driven by Impulse

  • T. Ito
  • Y. Kito
  • S. Ishimori
  • A. Phunopas
  • T. Hayashi
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 2)


We have developed a traveling small capsule, which has a smooth outer surface and is driven by inertia force and friction force. Measuring only 7 mm in diameter and 12 mm in length, it is sufficiently small to be placed in the human gullet or intestines. The capsule contains a small magnet and a coil, and an electric pulse drives the magnet to move the capsule. To investigate the feasibility of our traveling capsule, we did the theoretical analysis and the computer simulation using a simple model. We performed an experimental investigation on making our capsule travel on a plastic plate. We also showed that it can travel on the surface of a pig’s intestine. Our capsule may be useful for medical treatments such as inspection, drug delivery and operation.


Capsule Micromechanism Magnetic force Friction force 



This research was supported by Grant-in-Aid for Scientific Research from Japan Society for the Promotion of Science (#20560244).


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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • T. Ito
    • 1
  • Y. Kito
    • 2
  • S. Ishimori
    • 2
  • A. Phunopas
    • 2
  • T. Hayashi
    • 3
  1. 1.Faculty of Computer Science and Systems EngineeringKyushu Institute of TechnologyKitakyushuJapan
  2. 2.Kyushu Institute of TechnologyFaculty of Computer Science and Systems EngineeringFukuokaJapan
  3. 3.Ogasawara Precision Laboratory Ltd.KanagawaJapan

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