BLOOD PURIFICATION DEVICE

To provide a blood purification device capable of maintaining measurement accuracy for blood concentration during treatment.SOLUTION: A blood purification device 100 includes a blood circuit 110, a blood pump 111c and a blood purifier 120, concentration changing means, a measurement part 115, and a...

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Bibliographic Details
Main Author MASAOKA KATSUNORI
Format Patent
LanguageEnglish
Japanese
Published 18.01.2023
Subjects
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
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Summary:To provide a blood purification device capable of maintaining measurement accuracy for blood concentration during treatment.SOLUTION: A blood purification device 100 includes a blood circuit 110, a blood pump 111c and a blood purifier 120, concentration changing means, a measurement part 115, and a control device 150. The control device 150 includes a calibration curve storage part 151 for storing the correspondence between an absorbance of blood and a concentration of blood, a concentration calculation part 152 for calculating a concentration of circulation blood on the basis of light intensity measured in the measurement part 115 and the correspondence stored in the calibration curve storage part 151, a concentration-for-correction calculation part 153 for calculating a concentration for correction on the basis of a concentration before change calculated by the concentration calculation part 152, an amount of injected water or an amount of removed water, and an amount of blood sent out by the blood pump 111c, and a calibration curve correction part 154 for correcting the correspondence stored in the calibration curve storage part 151 when a difference between the concentration after change and the concentration for calibration exceeds a predetermined range.SELECTED DRAWING: Figure 5 【課題】治療中に血液濃度の測定精度を維持可能な血液浄化装置を提供すること。【解決手段】血液回路１１０と、血液ポンプ１１１ｃ及び血液浄化器１２０と、濃度変化手段と、測定部１１５と、制御装置１５０と、を備える血液浄化装置１００であって、制御装置１５０は、血液の吸光度と血液の濃度との対応関係を記憶する検量線記憶部１５１と、測定部１１５において測定された光強度と検量線記憶部１５１に記憶された対応関係とに基づいて循環血液の濃度を算出する濃度算出部１５２と、濃度算出部１５２により算出された変化前濃度、注水量又は除水量、及び血液ポンプ１１１ｃにより送出される血液量に基づいて、校正用濃度を算出する校正用濃度算出部１５３と、変化後濃度と校正用濃度との差異が所定の範囲を超えた場合に、検量線記憶部１５１に記憶された対応関係を校正する検量線校正部１５４と、を備える。【選択図】図５
Bibliography:Application Number: JP20210106926