PROBLEM TO BE SOLVED: To provide a liquid administration device for infusing a liquid to a person, significantly reducing the variation of the flow rate of the liquid even if the person changes the posture.SOLUTION: The liquid administration device includes a movable part 3 between a binding part 1 detachable from the person and a holder part 2 which holds an infusion part 4 to feed the medical liquid within an infusion bag 41a via an infusion tube 41d. The movable part 3 can freely stop the holder part 2 smoothly in the vertical direction and in the direction of rotation so that the posture of the infusion bag 41a can be retained in the vertical direction.COPYRIGHT: (C)2010,JPO&INPIT【課題】ヒトに液体を輸液する液体投与装置において、ヒトが姿勢を変えたりしても、液体の流量変化を大幅に低減できる液体投与装置を提供すること。【解決手段】ヒトに対して着脱可能に構成した結束部1と、輸液チューブ41dを介して輸液バッグ41a内の薬液を送り出す輸液部4を保持した保持部2との間に、輸液バッグ41aの姿勢を天地方向に維持するように、保持部2を、上下方向及び回転方向になめらかにフリーストップ可能な可動部3を設ける。【選択図】図3
