PROBLEM TO BE SOLVED: To provide a surgery system 1 including a trocar 10 being less prone to temperature rise of a housing.SOLUTION: The surgery system 1 comprises: a pneumoperitoneum device 41 the trocar 10 including a heat radiation member 12 that has a power transmission coil 11 wound around an insertion hole 10H in which a treatment device 30 is inserted, and has the heat conductivity of 15 W/(m K) or more, and a heat insulation member 13 that is disposed on the downside of the heat radiation member 12 and has the heat conductivity of 0.3 W/(m K) or less a power supply 21 that outputs an AC power to the power transmission coil 11 and a treatment unit 30 including a power receiving coil 31 that is inductively coupled with the power transmission coil 11 to receive the AC power, and a treatment part 32 that executes a treatment by the power received by the power receiving coil 31.COPYRIGHT: (C)2015,JPO&INPIT【課題】 筐体温度が上昇しにくいトロッカー10を具備する手術システム1を提供する。【解決手段】 手術システム1は、気腹装置41と、処置具30が挿入される挿入孔10Hを巻回する送電コイル11を有し、熱伝導率が15W/(m・K)以上の放熱部材12と、放熱部材12の下側に配設された、熱伝導率が0.3W/(m・K)以下の断熱部材13と、を有するトロッカー10と、送電コイル11に交流電力を出力する電源21と、送電コイル11と誘導結合して交流電力を受電する受電コイル31と、受電コイル31が受電する電力により処置が行われる処置部32と、を有する処置具30と、を具備する【選択図】図8