PROBLEM TO BE SOLVED: To provide a perfusion suction device having a simplified structure but yet being capable of adjusting the perfusion quantity favorably.SOLUTION: Provided is a perfusion suction device, allowing a demountable cassette to be mounted to the main body thereof. The cassette comprises: a passage through which a perfusate flows a cave-in portion 83 provided midway of the passage a peripheral portion 82a provided around the passage and adjacent to the cave-in portion a flexible seal member 81 covering the cave-in portion and peripheral portion and a hollow portion formed by the cave-in portion and seal member and flowing the perfusate therethrough. The main body comprises: a first contact portion 55a opposed to the cave-in portion via the seal member a second contact portion opposed to the peripheral portion via the seal member a pressing mechanism for pressing the seal member against the peripheral portion by pressing the second contact portion 56a against the seal member and a deformation mechanism for reducing the cross sectional area of the hollow portion by pressing the first contact portion against the seal member.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2017,JPO&INPIT【課題】簡素な構成でありながらも、灌流量を好適に調節できる灌流吸引装置を提供する。【解決手段】着脱可能なカセットが、本体に装着される灌流吸引装置であって、カセットには、灌流液が流れる流路と、流路の途中に設けられて、陥没形状で形成された陥没部83と、流路の周囲、且つ、陥没部に隣接して設けられる周辺部82aと、陥没部と周辺部とを覆う、可撓性を有するシール部材81と、陥没部とシール部材とで形成される、灌流液が流れる中空部と、が含まれ、本体には、シール部材を介して、陥没部に対向する第1接触部55aと、シール部材を介して、周辺部に対向する第2接触部と、シール部材に第2接触部56aを押し当てて、シール部材を周辺部に押し付ける押付機構と、シール部材に第1接触部を押し当てて、中空部の断面積を減少させる変形機構と、が含まれる。【選択図】図8
