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Three-dimensional power receiver for in vivo robotic capsules

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Abstract

A three-dimensional wireless power receiver is introduced in this study for in vivo robotic capsules. It is designed to retrieve hundreds of milliwatts of power, regardless of orientation relative to the time-varying magnetic field generated by the external transmitter outside a test animal body. Design issues, such as antenna structure and rectification topology, are discussed, considering limitations of physical space. Various design parameters are implemented and experimented. A selected design is implemented and tested for power variations on rotational positions relative to the transmitter magnetic field. The presented receiver delivers more than 300 mW of power regardless of its orientation. A test capsule is assembled with LED load for in vivo experiments. Visual verification of the light intensity of LED shows that the power-receiving performance of the receiver is not affected inside the animal body.

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Acknowledgments

This work was supported by the Korea Research Foundation Grant, funded by the Korean Government (MOEHRD) (The Regional Research Universities Program/Center for Healthcare Technology Development).

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Authors and Affiliations

  1. Division of Bionics and Bioinformatics, Chonbuk National University, Jeonju, Republic of Korea

    Munho Ryu

  2. Bioengineering Research Center for the Aged, Chonbuk National University, Jeonju, Republic of Korea

    Munho Ryu

  3. Division of Information Engineering and Telecommunications, Hallym University, 1 Okchon-dong, Chunchon, Gangwon-do, 200-702, Republic of Korea

    Jong Dae Kim & Hyun Uk Chin

  4. Biomedlab Co., Seoul, Republic of Korea

    Jongwon Kim

  5. Division of Gastroenterology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea

    Si Young Song

Authors
  1. Munho Ryu
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  2. Jong Dae Kim
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  3. Hyun Uk Chin
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  4. Jongwon Kim
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  5. Si Young Song
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Corresponding author

Correspondence to Jong Dae Kim.

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Ryu, M., Kim, J.D., Chin, H.U. et al. Three-dimensional power receiver for in vivo robotic capsules. Med Bio Eng Comput 45, 997–1002 (2007). https://doi.org/10.1007/s11517-007-0223-9

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  • DOI: https://doi.org/10.1007/s11517-007-0223-9

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