PROBLEM TO BE SOLVED: To provide a liquid feeding device excellent in convenience in which accuracy of detecting a closed state of a tube is further improved.SOLUTION: An infusion pump 10 includes: a plurality of fingers 210a-210d a cam shaft 230 having a plurality of eccentric cams 220a-220d for causing each of the plurality of fingers to individually move forward and backward with respect to a transfusion tube 110 a drive part 250 for rotatably driving the cam shaft a control part 300 for performing motion control for the drive part an occlusion sensor 162 for detecting a change in internal pressure of the transfusion tube when a rotation angle of the cam shaft reaches a predetermined angle and a determination part 303 for determining a closed state of the transfusion tube based on the result of the detection by the occlusion sensor.COPYRIGHT: (C)2016,JPO&INPIT【課題】チューブの閉塞状態の検知精度がより一層向上した利便性に優れる送液装置を提供する。【解決手段】輸液ポンプ10は、複数のフィンガ210a~210dと、複数のフィンガのそれぞれを輸液チューブ110に対して個別に進退移動させる複数の偏心カム220a~220dを備えるカムシャフト230と、カムシャフトを回転駆動する駆動部250と、駆動部の動作制御を行う制御部300と、カムシャフトの回転角度が所定の角度に達した際に輸液チューブの内圧の変化を検出する閉塞センサ162と、閉塞センサが検出した検出結果に基づいて輸液チューブの閉塞状態を判定する判定部303と、を有する。【選択図】図1
