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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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References

  1. Heetderks WJ (1988) RF powering of millimeter- and submillimeter-sized neural prosthetic implants. IEEE Trans Biomed Eng 35(5):323–327

    Article  Google Scholar 

  2. Hu C, Meng M, Liw PX, Wang X (2004) Image distortion correction for wireless capsule endoscope. In: Proceedings of the IEEE conference on robotics and automation, pp 4718–4723

  3. Iddan G, Meron G, Glukhovsky A, Swain P (2000) Wireless capsule endoscopy. Nature 405:717

    Article  Google Scholar 

  4. Kim B, Lee S, Park JH, Park JO (2005) Design and fabrication of a locomotive mechanism for capsule-type endoscopes using shape memory alloys (SMAs). IEEE ASME Trans Mechatron 10(1):77–86

    Article  Google Scholar 

  5. Lee YU, Kim JD, Ryu M, Kim J (2006) In vivo robotic capsules: determination of the number of turns of its power receiving coil. Med Biol Eng Comput [Epub ahead of print]

  6. Lenaerts B, Puers R (2007) An inductive power link for a wireless endoscope. Biosens Bioelectron 22:1390–1395

    Article  Google Scholar 

  7. Meron GD (2000) The development of the swallowable video capsule (M2A). Gastrointest Endosc 52(6):817–819

    Article  Google Scholar 

  8. Moglia A, Menciassi A, Schurr MO, Dario P (2006) Wireless capsule endoscopy: from diagnostic devices to multipurpose robotic systems. Biomed Microdevices [Epub ahead of print]

  9. Sato T, Sato F, Matsuki H, Sato T (2001) New functional electrical system using magnetic coils for power transmission and control signal detection. IEEE Trans Magn 37(4):2925–2927

    Article  Google Scholar 

  10. Troyk PR, Schwan MAK (1992) Closed-loop class E transcutaneous power and data link for microimplants. IEEE Trans Biomed Eng 39(6):589–599

    Article  Google Scholar 

  11. Zierhofer CM, Hochmair ES (1990) High-efficiency coupling-insensitive transcutaneous power and data transmission via an inductive link. IEEE Trans Biomed Eng 37(7):716–722

    Article  Google Scholar 

Download references

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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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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