BLOOD STORAGE TANK, BLOOD STORAGE TANK WITH BLOOD TRANSMISSION MECHANISM AND ARTIFICIAL HEART-LUNG DEVICE

摘要

PROBLEM TO BE SOLVED: To automatically send the large amount of air to a centrifugal pump and to automatically stop blood transmission by the centrifugal pump in the case that a blood amount inside a blood storage tank becomes less than a certain amount by forming a blood passage for communicating the upper part of the inside of a blood reservation part provided inside a blood storage part and a blood flow-out port. ;SOLUTION: Since the blood reservation part 8 is formed in this blood storage tank, even in the case that a blood surface inside the blood storage part becomes lower than the blood flow-out port 6 and becomes lower than the upper end of the blood reservation part 8 further, blood flow-out from the centrifugal pump is continued. Also, the blood surface reaches near the center of the side face of the blood reservation part 8 or the lower part of a certain level. Then, when blood weight inside the blood reservation part 8 becomes larger than the sum of the suction force of the centrifugal pump and the surface tension of the blood at a projection part, blood suction by the centrifugal pump becomes impossible, the blood inside the blood reservation part 8 and inside a tubular member is dropped to the lower part by gravity, the upper part inside the blood reservation part 8 is turned to a space and thus, the centrifugal pump is idly rotated and the blood transmission is stopped.;COPYRIGHT: (C)1998,JPO