PROBLEM TO BE SOLVED: To provide a thermoelectric needle which allows for a small-diameter structure applicable even to a small animal, in a heating appliance for ablation treatment of tumor.SOLUTION: The thermoelectric needle is constituted by providing a hollow pipe 11 having a closed tip of a preferable external diameter in a range of 1.2-2.0 mm, an electrically insulating tube 2 formed of a heat-resistant insulating material such as polyimide resin and inserted into the pipe, a heating element (heater 3) coated with a heat-resistant insulating material such as polyimide resin and inserted into the tube 2 thus insulating them from each other, and a thermocouple 4, placed in parallel with each other.COPYRIGHT: (C)2013,JPO&INPIT【課題】腫瘍の焼灼治療を用途とする発熱器具において、小形動物にも適用できる細径な構造が可能となる電熱針を提供すること。【解決手段】好ましい外径を1.2mm以上、2.0mm以下とする先端が閉塞した中空パイプ11と、該パイプに内挿されるポリイミド樹脂などの耐熱性絶縁材より形成される電気絶縁性のチューブ2と、該チューブ2に内挿されるポリイミド樹脂などの耐熱性絶縁材に被覆され、互いを絶縁する発熱体(ヒーター3)、及び、熱電対4とをそれぞれ並列に設けて構成する。【選択図】図2
