PROBLEM TO BE SOLVED: To provide a medical reservoir configured to keep a stable delivery flow rate without depending on the liquid level of a storage tank, and close a passage to eliminate the delivery risk of bubbles when a medical solution or blood in the storage tank is equal to or lower than the liquid level.SOLUTION: A medical reservoir 100 accommodates a valve body 140 in a cylindrical wall 131, which moves in the vertical direction with the vertical movement of a medical solution stored in a storage tank 110 to move a guide hole 130h in the vertical direction, and intercepts the communication with a delivery hole 120h of a delivery port 120 in the state where the valve body 140 is at least partly located under the liquid level of the medical solution and located at the lowermost end of the guide hole 130h.COPYRIGHT: (C)2014,JPO&INPIT【課題】貯留槽の液面レベルに依存することなく安定した送出流量を維持できるとともに、貯留槽の内の薬液または血液が所定の液面レベル以下になった際は、流路を閉塞し、気泡の送出リスクを無くする構成を備える医療用リザーバを提供する。【解決手段】この医療用リザーバ100は、ガイド孔130hを上下方向に移動可能なように、筒状壁131内に貯留槽110内に貯留される薬液の上下移動に伴って上下方向に移動し、少なくとも一部分が薬液の液面下に位置して、ガイド孔130hの最下端に位置した状態において、送出ポート120の送出孔120hとの連通を遮断する弁体140が収容されている。【選択図】図8
