DIALYZER AND FLUID REPLENISHMENT CONTROL METHOD

• Main Authors: NAGAO HIROTOMO, MASAOKA KATSUNORI
• Format: Patent
• Language: English; Japanese
• Published: 09.01.2020
• 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

To provide a dialyzer and fluid replenishment control method, enabling appropriate fluid replenishment.SOLUTION: A dialyzer 100 comprises: a blood circuit 110; blood purification means 120; a dialysate circuit 130; circulation blood amount measurement means 140; replenisher injection means for injecting replenisher for recovering a circulation blood amount into the blood circuit; and a control unit 150 for controlling the replenisher injection means so as to inject a predetermined amount of replenisher into the blood circuit at predetermined intervals intermittently. The control unit adjusts, on the basis of a rate of change in a circulation blood amount of latest replenisher injection measured by measurement means, a replenisher injection amount and/or injection interval of the next time so that a rate of change in a circulation blood amount by the next replenisher injection is within a predetermined range; controls a water removal rate of the blood purification means so that a water amount corresponding to the total amount of replenisher injected into the blood circuit is collected in a period from the start to the finish of dialysis.SELECTED DRAWING: Figure 5 【課題】適正な補液を実施可能な透析装置及び補液制御方法を提供すること。【解決手段】透析装置１００は、血液回路１１０と、血液浄化手段１２０と、透析液回路１３０と、循環血液量測定手段１４０と、循環血液量を回復させるための補充液を血液回路に注入するための補充液注入手段と、血液回路に所定の間隔で間歇的に所定の量の補充液を注入するように補充液注入手段を制御する制御部１５０と、を備え、制御部は、測定手段により測定される直近の補充液の注入による循環血液量の変化率に基づいて、次回の補充液の注入による循環血液量の変化率が所定の範囲内となるように、次回の補充液の注入量及び／又は注入間隔を調整し、透析開始から終了までの間に、血液回路に注入される補充液の全量に相当する水分を回収するように血液浄化手段の除水速度を制御する。【選択図】図５