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Online ISSN : 1884-5827
Print ISSN : 1341-9455
ISSN-L : 1341-9455
研究論文
内視鏡視野を拡大可能な補助ツールシステムの開発
-基本機能の評価-
長谷川 健太鈴木 啓太和田 則仁高橋 良至李 虎奎花房 昭彦米田 隆志
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ジャーナル フリー

2018 年 30 巻 4 号 p. 105-112

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Natural orifice translumenal endoscopic surgery (NOTES) is a minimally invasive surgery performed using an endoscope. However, this surgery is challenging for surgeons owing to the insufficient view of the operative field during the surgery. In this paper, a supporting tool system that enhances the field of view (FOV) of an endoscope is introduced. The developed tool is attached to the endoscope and inserted into the patient's abdominal cavity from the patient's mouth. The tool is mounted on the abdominal cavity using a magnet mounted on the outside surface of the body. When the tool is released from the endoscope, the arms of the tool, which have LEDs and a miniature camera, are opened. The FOV of the workspace are then enhanced by the camera and LEDs on the tool. The arms can be folded when the tool is reattached to the endoscope and thus recollected. A prototype of the tool was manufactured by metal and resin and its basic performance for a series of movements was confirmed using a pseudo abdominal cavity. The attached LEDs and camera enhance the FOV for endoscopy because the planar view of the forceps is also added. Further, the performance for attracting the tool by the magnet on to the abdominal wall was evaluated. The tool can be attached to an acrylic board with a maximum thickness of 24.7 mm using a Φ20 × 10 mm neodymium magnet. The maximum pressure was 19 × 103 N/m2, that was less than the value by which the skin was damaged. However, the attraction force is small and under 1.0 N for a board with thickness greater than 11.0 mm, which is estimated to be that of the human body. Using a support tool that can enhance the FOV of the surgical field has large potential to increase the usefulness, safety, and demand of NOTES surgery.

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