PROBLEM TO BE SOLVED: To provide a blood processing system that can strictly control a supply flow rate of therapeutic fluid to a blood processing circuit, while filling the therapeutic fluid in a reservoir of a blood processing device during blood processing.SOLUTION: A blood purification system 1 has: a blood processing device 10 having a first supply pump 41, a first reservoir 40, a therapeutic fluid supply circuit 24 and a first weight scale 42； a therapeutic fluid supply device 11 having a second reservoir 61, a therapeutic fluid filling circuit 63 and a second weight scale 81； and a control device 12 for calculating an actual flow rate of the first supply pump 41 from a change amount of the sum total of a weight of the first reservoir 40 measured by the first weight scale 42 and a weight of the second reservoir 61 measured by the second weight scale 81, and controlling the first supply pump 41 based on an actual flow rate. The blood purification system 1 further includes connection means for bringing the therapeutic fluid supply circuit 24 into communication with the therapeutic fluid filling circuit 63 and connecting them. The blood processing device 10 and the therapeutic fluid supply device 11 are constituted independently.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】血液処理中に血液処理装置の貯留容器に治療液を補充しながら、血液処理回路への治療液の供給流量を厳格に制御可能な血液処理システムを提供する。【解決手段】血液浄化システム１は、第１の供給ポンプ４１と、第１の貯留容器４０と、治療液供給回路２４及び第１の重量計４２を有する血液処理装置１０と、第２の貯留容器６１と、治療液補充回路６３と、第２の重量計８１と、を有する治療液供給装置１１と、第１の重量計４２により測定された第１の貯留容器４０の重量と第２の重量計８１により測定された第２の貯留容器６１の重量との総和の変化量から、第１の供給ポンプ４１の実流量を算出し、当該実流量に基づいて第１の供給ポンプ４１を制御する制御装置１２とを有する。血液浄化システム１は、治療液供給回路２４と治療液補充回路６３とを連通して接続する接続手段をさらに備え、血液処理装置１０と治療液供給装置１１とが独立して構成されている。【選択図】図１
