A treatment tool exchanging apparatus is a treatment tool exchanging apparatus that switches and holds a plurality of treatment instruments for performing a treatment on a target to be treated, and the plurality of treatment tools are inserted to define an insertion path of the treatment tool A flexible inserting portion in which a plurality of treatment instrument channels are formed and a plurality of treatment instruments which are inserted in the treatment instrument channel, An operation section which performs treatment by manipulating the plurality of treatment instruments and an operation section which performs a treatment of the treatment instrument projecting from the distal end of the treatment instrument channel among the plurality of treatment tools And a control unit that controls an amount of protrusion from the component channel. The insertion section has a switching section for changing an insertion path of the treatment instrument to be inserted.処置具交換装置は、処置される対象に対して処置をする複数の処置具を切換えて保持する処置具交換装置であって、前記複数の処置具が挿入され前記処置具の挿通経路を規定する複数の処置具チャネルが形成された軟性の挿入部と、前記処置具チャネルに挿通された前記複数の処置具の各々を前記処置具チャネル内で前進させるとともに前記複数の処置具の各々を前記処置具チャネル内で後退させる駆動部と、前記複数の処置具を操作して処置をする操作部と、前記複数の処置具のうち前記処置具チャネルの先端から突出した状態にある処置具の前記処置具チャネルからの突出量を制御する制御部と、を備える。前記挿入部は、挿入される前記処置具の挿通経路を変更する切換え部を有する。
