PROBLEM TO BE SOLVED: To provide a surgical tool for a surgical support robot capable of reducing the risk of failure or malfunction. SOLUTION: A cord-like body 70 having conductivity, an outer shell portion 10 which covers the periphery of the cord-like body 70 and has conductivity, and is arranged between the cord-like body 70 and the outer shell portion 10 to provide insulation. A first insulating portion 30 having an insulating portion 40, a second insulating portion 40 having an insulating property arranged at a position adjacent to the first insulating portion 30 between the cord 70 and the outer shell portion 10, the first insulating portion 30 and the first insulating portion 30. 2 A convex portion 50 that protrudes from one of the insulating portions 40 toward the other and has a cord-like body 70 inserted therein, a concave portion formed on the other portion into which the convex portion 50 is inserted, and a concave portion on the other side that is separated from the outer shell portion 10. A conductive tip portion 20 is provided, and a power supply cable 60 that is arranged inside the first insulating portion 30 and the second insulating portion 40 and supplies power from the outside to the tip portion 20 is provided. It is characterized by being. [Selection diagram] Fig. 1【課題】故障や誤作動のリスク低減を図ることができる手術支援ロボット用術具を提供する。【解決手段】導電性を有する索状体70と、索状体70の周囲を覆うとともに導電性を有する外殻部10と、索状体70および外殻部10の間に配置され絶縁性を有する第1絶縁部30と、索状体70および外殻部10の間における第1絶縁部30に隣接する位置に配置され絶縁性を有する第2絶縁部40と、第1絶縁部30および第2絶縁部40の一方から他方に向かって突出し、内部に索状体70が挿通される凸部50と、他方に形成され凸部50が挿入される凹部と、他方に外殻部10と離隔して配置される導電性を有する先端部20と、第1絶縁部30および第2絶縁部40の内部に配置され、外部から先端部20へ電力を供給する電力供給ケーブル60と、が設けられていることを特徴とする。【選択図】図1