[Problem] To provide a surgical device which can be used for determination of an excision range and function monitoring in a neurosurgical operation. [Solution] A fence post (1) with an electrode is used for indicating the boundary of an excision region in a brain operation, and is provided with a cylindrical member (11) in which a pointer can be inserted, an electrode (12) which is provided at one end of the cylindrical member (11), and a cable (13) which is connected to the electrode (12) and disposed along the length direction of the cylindrical member (11), thereby making it possible to indicate the boundary of the excision region and be used for function monitoring for searching for a pyramidal tract.【課題】脳神経外科手術において、切除範囲の決定と、機能モニタリングとに用いることができる手術用のデバイスを提供する。【解決手段】脳手術時に切除領域の境界を示すために用いられる電極付きフェンスポスト１であって、内部に指示棒を挿入可能な筒状部材１１と、筒状部材１１の一端に設けられた電極１２と、電極１２に接続され、筒状部材１１の長さ方向に沿って配設されるケーブル１３と、を備えることにより、切除領域の境界を示すことができると共に、錐体路を探索する機能モニタリングにも用いることができる。【選択図】図１
