PROBLEM TO BE SOLVED: To provide a cassette for infusion pump having a structure for positively prohibiting motion of a tube itself as well as for feeding out positively liquid in the tube.SOLUTION: There are provided passages 204a, 204b for passing a tube 50. There are provided a main body member having a tube holding part 204 for holding a part 52 passing through the passage 204a of the tube 50 and a part 53 passing through the passage 204b and a ring member 220 installed at a position in the interior space where the tube 50 is sandwiched between an inner wall surface 203a and itself and pushed against the inner wall surface 203a at equal to or more than one location in a surrounding direction to crush the tube and at the same time the crushing location of the tube is circulated and moved in a surrounding direction to feed out the liquid in the tube. The tube holding part 204 has a rib 209 projecting against the passage 204a and the passage 204b and extending over one round of them to depress a diameter of the tube.SELECTED DRAWING: Figure 15COPYRIGHT: (C)2017,JPO&INPIT【課題】チューブ内の液を確実に送り出すとともにチューブ自体の移動を確実に阻止する構造を備えた輸液ポンプ用カセットを提供する。 【解決手段】チューブ50を通過させる通路204a,204bが設けられて、チューブ50の、通路204aを通過する部分52と通路204bを通過する部分53とを保持するチューブ保持部204を有する本体部材、内部空間内の、内壁面203aとの間にチューブ50を挟む位置に装入され、周回方向1箇所以上でチューブを内壁面に押し当ててチューブを押し潰すとともに、チューブの押潰し箇所を周回方向に循回移動させてチューブ内の液を送り出すリング部材220とを備え、チューブ保持部204が、通路204aおよび通路204bに突き出て一周に渡って延在し、チューブの径を押し縮めるリブ209を有する。【選択図】図15
