PROBLEM TO BE SOLVED: To provide a surgical system having a simple configuration and preventing an incised part on a body surface of a patient from being compressed.SOLUTION: A surgical system includes: a manipulator 3, a tip end of which is moved with respect to a base end in a three-dimensional space； an instrument holding part 36 that is continued from the tip end of the manipulator and can hold a surgical instrument 42 in such an attitude that the shaft extends in a reference direction D, the surgical instrument including a long shaft 43 and a treatment instrument 44 provided at a tip end of the shaft； and an oscillation mechanism 46 interposed between the manipulator and the treatment instrument, and oscillating the tip end of the shaft in a radial direction with an axis of the shaft extending in the reference direction defined used as a center.SELECTED DRAWING: Figure 7【課題】 簡素な構成で、患者の体表の切開部の圧迫を防止する外科手術システムを提供する。【解決手段】 基端部に対して先端部を３次元空間内で移動するマニピュレータ３と、マニピュレータの先端部に連なり、長軸状のシャフト４３とシャフトの先端部に設けられた処置具４４とを有する外科用器具４２をシャフトが基準方向Ｄに延在する姿勢で保持可能な器具保持部３６と、マニピュレータと処置具との間に介在し、基準方向に延在するシャフトの軸線を中心とする径方向にシャフトの先端部を揺動させる揺動機構４６と、を備える。【選択図】 図７
