PROBLEM TO BE SOLVED: To provide an instrument which achieves a safe and kind treatment by optimally controlling a cautery temperature and reducing a diameter of a needle tube in a cautery element used in cautery treatment.SOLUTION: A cautery element includes: a needle tube 1 constituted of a hollow pipe 11 which has a closed distal end and has an outer diameter set to 1.0 mm or more and 1.61 mm or less a tubular resistance temperature detector thermosensitive element 2 which is inserted in a distal end inner part of the needle tube and has a length set to 10 mm or longer and 30 mm or shorter and an operational part 3 provided on a proximal end of the needle tube 1, and is formed as a needle-like instrument to cauterize a tissue by electrical resistance heating with a controlled temperature. A plurality of the needle tubes where the resistance temperature detector thermosensitive element is inserted may be provided in one operational part in a manner to be parallel to each other.COPYRIGHT: (C)2014,JPO&INPIT【課題】焼灼治療に用いる焼灼子において、焼灼温度を最適に制御すると共に針管を細径化することにより、安全で、かつ、愛護的な治療を可能とする器具を提供すること。【解決手段】先端が閉塞された、外径を1.0mm以上、1.61mm以下に設定された中空パイプ11よりなる針管1と、該針管の先端内部に挿入された、長さを10mm以上、30mm以下に設定された管状の測温抵抗体感温素子2と、前記針管1の基部に備える操作部3より構成し、温度制御された電気抵抗加熱により組織を焼灼する針状器具として形成した。また、前記測温抵抗体感温素子を内挿した針管を、ひとつの操作部に複数本平行に設けても良い。【選択図】図1
