| 摘要 |
A high-frequency treatment tool for an endoscope including a sheath and an electrode is provided. The sheath is e inserted through a forceps channel of the endoscope, and is made of electrically insulating material. A high frequency electrical current is supplied to the electrode for the high-frequency treatment. At least a part of the endoscope to be contacted with mucous membrane is formed with a coating of one of gold, platinic metal and its alloy.
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