Localization of Gastrointestinal Marking Clip Using RFID. A Study in Canine Esophagus.

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  • Takahata Hiromi
    Division of Bioengineering, Graduate School of Engineering Sciences, Osaka University, Osaka, Japan
  • Kojima Fumitsugu
    Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
  • Sugiura Tadao
    Graduate School of Information Science, Nara Institute of Science and Technology, Nara, Japan
  • Okada Minoru
    Graduate School of Information Science, Nara Institute of Science and Technology, Nara, Japan
  • Sato Toshihiko
    Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
  • Tsunoda Shigeru
    Department of Surgery, Kyoto University Hospital, Kyoto, Japan
  • Nakamura Tatsuo
    Institute for Frontier Medical Science, Kyoto University, Japan
  • Date Hiroshi
    Department of Thoracic Surgery, Kyoto University Hospital, Kyoto, Japan
  • Oshiro Osamu
    Division of Bioengineering, Graduate School of Engineering Sciences, Osaka University, Osaka, Japan

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Other Title
  • RFIDを用いた消化管用クリップの位置特定～イヌ食道における検討～
  • RFID オ モチイタ ショウカカンヨウ クリップ ノ イチ トクテイ : イヌ ショクドウ ニ オケル ケントウ

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Abstract

Objective: To investigate the feasibility and accuracy of a newly-developed surgical marking system using gastrointestinal clip with radio-frequency identification (RFID) tag. Method: RFID is a technology for near field communication. The band, 13.56 MHz, is one of the open-bands for medical use and is suitable for the marking system in biological tissues because of its linear signal decay properties. The proposed system consists of four parts: (1) 13.56 MHz RFID reader and writer, (2) Gastrointestinal clip with RFID-tag, (3) Sensor antenna, (4) and Signal processing units with indicator. In the experiments using canine model, two or three clips were endoscopically applied in the esophagus of six dogs. During the subsequent operation, the clips were localized by the detection of RFID signal from the tag, and the detected sites were marked on adventitia by ablation. Longitudinal distance between the clips and the (metal) pin-needle which were pierced from ablated adventitia were measured with X-ray radiographs of the resected specimen. Result:All clips (14/14) were successfully detected and the detection time was 15.0 ± SD11.6 seconds. Longitudinal distance was 3.0 ± SD2.3 mm. Conclusions: Gastrointestinal clips with RFID-tag were localized by our system with substantial accuracy in the experimental setting using canine esophagus.

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