The endoscope filtration device for preprocessor according to the present invention, the introduction portion for introducing a fluid, deriving unit for deriving the fluid, said body portion flow path is formed which connects inlet portion and a said outlet portion, the flow path provided, the filter unit for filtering fluid flowing through said flow path, and the flow path provided between the the filter portion to the outlet portion, the fluid only in a direction toward the lead-out portion from the filter unit first check valve to pass, including the.本発明の内視鏡リプロセッサ用ろ過具は、流体を導入する導入部、流体を導出する導出部、前記導入部と前記導出部とを接続する流路が形成された本体部、前記流路に設けられ、前記流路を流れる流体をろ過するフィルタ部、及び前記流路の、前記フィルタ部から前記導出部までの間に設けられ、前記フィルタ部から前記導出部に向かう方向にのみ流体を通過させる第1逆止弁、を含む。
