Which is provided at the distal end of the insertion portion, the medical device, such that a tip portion having inspection, treatment, and functions for or to carry out the observation, curved in two or more directions by concatenating the plurality of bending pieces is provided continuously to the tip provided in the operation portion for connecting the curved portion configured to, at the base end of the insertion part, and a medical device comprising a bending portion operating device for operating the bending operation the bending portion, the central axis of the curved portion along, or at least one of the first end side inner peripheral surface of the curved portion, there is provided a neutral position returning elastic member to return to the neutral position the curved portion.医療装置は、挿入部の先端に設けられ、検査、処置、或いは観察を行うための機能を有する先端部と、先端部に連設され複数の湾曲駒を連接して二方向以上に湾曲するように構成された湾曲部と、挿入部の基端に連接する操作部に設けられ、湾曲部を湾曲動作させる操作を行う湾曲部操作装置とを具備する医療装置であって、湾曲部の中心軸に沿って、或いは、湾曲部の第1端側内周面、の少なくとも一方に、湾曲部を中立位置に復帰させる中立位置復帰用弾性部材を設けている。
