PROBLEM TO BE SOLVED: To provide a plasma cleaning device capable of accurately detecting occurrence of hemolysis by using a hemolysis sensor to/from which a plasma flow path is attachable and detachable.SOLUTION: The plasma cleaning device 1 includes: a plasma separator 10 for separating plasma from blood a plasma flow path 70 through which the plasma separated in the plasma separator 10 flows a hemolysis sensor 80 to/from which the plasma flow path 70 is attachable and detachable, and which detects a transmission light quantity when light is transmitted through the plasma flow path 70 and a hemolysis determination control part 140 for determining occurrence of the hemolysis on the basis of the transmission light quantity detected by the hemolysis sensor 80. The hemolysis determination control part 140 initializes a lower limit threshold Lm of the transmission light quantity to be the reference of the occurrence of the hemolysis on the basis of the transmission light quantity La detected by the hemolysis sensor 80, and thereafter executes control so as to elevate the lower limit threshold Lm to follow the transmission light quantity when the detected transmission light quantity La increases and to keep the lower limit threshold Lm fixed when the detected transmission light quantity La decreases.COPYRIGHT: (C)2013,JPO&INPIT【課題】血漿流路を着脱可能な溶血センサを用いて、溶血の発生を精度良く検出できる血漿浄化装置を実現する。【解決手段】血漿浄化装置1は、血液から血漿を分離する血漿分離器10と、血漿分離器10で分離された血漿が流れる血漿流路70と、血漿流路70が着脱自在であり、血漿流路70に光を透過したときの透過光量を検出する溶血センサ80と、溶血センサ80により検出された透過光量に基づいて、溶血の発生を判定する溶血判定制御部140とを備えている。溶血判定制御部140は、溶血の発生の基準となる透過光量の下限閾値Lmを、溶血センサ80により検出された透過光量Laに基づいて初期設定し、その後、検出透過光量Laが増加したときには、下限閾値Lmを透過光量に追従するように上昇させ、検出透過光量Laが減少したときには、下限閾値Lmを一定に保つように制御する。【選択図】図3
