The present invention provides a blood purification apparatus and a blood purification circuit, by which a circuit can be shared by different modes for performing respective continuous blood purification methods, a structure of the apparatus performing the continuous blood purification methods can b
The present invention provides a blood purification apparatus and a blood purification circuit, by which a circuit can be shared by different modes for performing respective continuous blood purification methods, a structure of the apparatus performing the continuous blood purification methods can be simplified, and CHF, CHD, CHDF, and ECUM can be performed. The blood purification apparatus and the blood purification circuit according to the present invention includes: a first supply fluid channel (3) having one end connected to a supply fluid container (1) containing a supply fluid flowing in the first supply fluid channel (3); a first branched part (4) connected to the other end of the first supply fluid channel (3); a first supply fluid pump (10a) connected to the first branched part (4); a second supply fluid channel (7) which has one end connected to the first supply fluid pump (10a) and the other end connected to a dialyzer (6) that filters and dialyzes blood, and in which the supply fluid from the first supply fluid pump (10a) flows; a second supply fluid pump (10b) connected to the first branched part (4); and a third supply fluid channel (9) in which a supply fluid from the second supply fluid pump (10b) flows, having one end connected to the second supply fluid pump (10b) and the other end connected to a vein side blood channel (16) in which blood taken from a patient flows.
대표청구항▼
1. a blood purification apparatus comprising: a first supply fluid channel having one end connected to a supply fluid container containing a supply fluid flowing in said first supply fluid channel;a first branched part connected to an other end of said first supply fluid channel;a second supply flui
1. a blood purification apparatus comprising: a first supply fluid channel having one end connected to a supply fluid container containing a supply fluid flowing in said first supply fluid channel;a first branched part connected to an other end of said first supply fluid channel;a second supply fluid channel having one end connected to said first branched part, and an other end connected to a hemofilter that purifies blood, said second supply fluid channel having a first pump;a third supply fluid channel having one end connected to said first branched part, and an other end connected to a blood channel in which blood taken from a patient flows, said third supply fluid channel having a second pump;a supply fluid measurement container having one end connected to said first branched part, and used for measuring an amount of the supply fluid flowing from said supply fluid container;a filtrate channel (i) which has one end connected to said hemofilter, (ii) which includes a third pump, and (iii) in which a filtrate from said hemofilter flows;a second branched part connected to an other end of said filtrate channel;a discharged-fluid container connected to said second branched part and containing the filtrate flowing in said filtrate channel;a filtrate measurement container connected to said second branched part, and used for measuring an amount of the filtrate flowing from said hemofilter;a balance detector which detects whether or not there is a balance between (i) an amount of decrease in a supply fluid contained in said supply fluid measurement container and (ii) an amount of increase in a filtrate contained in said filtrate measurement container, and which measures both an amount of the filtrate in said filtrate measurement container and an amount of the supply fluid in said supply fluid measurement container, said balance detector comprising a weight change amount calculation unit that calculates a flow amount of the filtrate and a flow amount of the supply fluid, and an increased/decreased amount calculation unit that calculates the amount of filtrate in said filtrate measurement container and the amount of the supply fluid in said supply fluid measurement container; anda control unit configured to control said first pump, said second pump, and said third pump, to maintain a balance between (i) the supply fluid contained in said supply fluid measurement container and the filtrate contained in said filtrate measurement container, and (ii) an amount of decrease in the supply fluid in said supply fluid measurement container and an amount of increase in the filtrate stocked in said filtrate measurement container based on a determination made by said weight change amount calculation unit. 2. The blood purification apparatus according to claim 1, wherein said first supply fluid channel has a first opening-closing unit configured to (i) lead the supply fluid flowing in said first supply fluid channel to said first branched part, and (ii) block the supply fluid, andwherein the supply fluid contained in said supply fluid container is led to said supply fluid measurement container due to a head of fluid. 3. The blood purification apparatus according to claim 2, further comprising: a discharge channel having one end connected to said second branched part, and an other end connected to said discharged-fluid container,wherein said discharge channel includes a second opening-closing unit configured to (i) lead the filtrate flowing in said discharge channel to said discharged-fluid container, and (ii) block the filtrate. 4. The blood purification apparatus according to claim 3, wherein said control unit further includes a receiving unit configured to receive mode information, the mode information specifying which mode among a plurality of continuous blood purification modes is to be performed, and wherein said control unit is configured to further control, based on the mode information, opening and closing of each of said first opening-closing unit and said second opening-closing unit. 5. A blood purification circuit comprising: a first supply fluid channel having one end connected to a supply fluid container containing a supply fluid flowing in said first supply fluid channel;a first branched part connected to an other end of said first supply fluid channel;a second supply fluid channel having one end connected to said first branched part, and an other end connected to a hemofilter that purifies blood, said second supply fluid channel having a first pump segment;a third supply fluid channel having one end connected to said first branched part, and an other end connected to a blood channel in which blood taken from a patient flows, said third supply fluid channel having a second pump segment;a supply fluid measurement container having one end connected to said first branched part, and used for measuring an amount of the supply fluid flowing from said supply fluid container;a filtrate channel (i) which has one end connected to said hemofilter, (ii) which includes a third pump segment, and (iii) in which a filtrate from said hemofilter flows;a second branched part connected to an other end of said filtrate channel;a discharged-fluid container connected to said second branched part and containing the filtrate flowing in said filtrate channel;a filtrate measurement container connected to said second branched part, and used for measuring an amount of the filtrate flowing from said hemofilter;a balance detector which detects whether or not there is a balance between (i) an amount of decrease in a supply fluid contained in said supply fluid measurement container and (ii) an amount of increase in a filtrate contained in said filtrate measurement container, and which measures both an amount of the filtrate in said filtrate measurement container and an amount of the supply fluid in said supply fluid measurement container, said balance detector comprising a weight change amount calculation unit that calculates a flow amount of the filtrate and a flow amount of the supply fluid, and an increased/decreased amount calculation unit that calculates the amount of filtrate in said filtrate measurement container and the amount of the supply fluid in said supply fluid measurement container; anda control unit configured to control said first pump segment, said second pump segment, and said third pump segment, to maintain a balance between (i) the supply fluid contained in said supply fluid measurement container and the filtrate contained in said filtrate measurement container, and (ii) an amount of decrease in the supply fluid in said supply fluid measurement container and an amount of increase in the filtrate stocked in said filtrate measurement container based on a determination made by said weight change amount calculation unit. 6. The blood purification circuit according to claim 5, wherein said first supply fluid channel has a first opening-closing unit configured to (i) lead the supply fluid flowing in said first supply fluid channel to said first branched part, and (ii) block the supply fluid, andthe supply fluid contained in said supply fluid container is led to said supply fluid measurement container due to head of fluid. 7. The blood purification circuit according to claim 6, further comprising: a discharge channel having one end connected to said second branched part, and an other end connected to said discharged-fluid container,wherein said discharge channel includes a second opening-closing unit configured to (i) lead the filtrate flowing in said discharge channel to said discharged-fluid container, and (ii) block the filtrate. 8. The blood purification apparatus according to claim 1, wherein said control unit includes a receiving unit configured to receive mode information, the mode information specifying which mode among a plurality of continuous blood purification modes is to be performed,wherein said control unit is configured to control operation and stoppage of each of said first pump segment and said second pump segment based on the mode information, andwherein said control unit is configured to:stop the first pump and operate the second pump based on mode information for specifying Continuous Hemofiltration (CHF) to be performed;operate the first pump and stop the second pump based on mode information for specifying Continuous Hemodia (CHD) to be performed; andoperate the first pump and operate the second pump based on mode information for specifying Continuous Hemodiafiltration (CHDF) to be performed. 9. The blood purification circuit according to claim 5, wherein said control unit includes a receiving unit configured to receive mode information, the mode information specifying which mode among a plurality of continuous blood purification modes is to be performed,wherein said control unit is configured to control operation and stoppage of each of said first pump segment and said second pump segment based on the mode information, andwherein said control unit is configured to:stop the first pump segment and operate the second pump segment based on mode information for specifying Continuous Hemofiltration (CHF) to be performed;operate the first pump segment and stop the second pump segment based on mode information for specifying Continuous Hemodia (CHD) to be performed; andoperate the first pump segment and operate the second pump segment based on mode information for specifying Continuous Hemodiafiltration (CHDF) to be performed. 10. The blood purification apparatus according to claim 1, wherein said balance detector includes:a pillar;a bar-shaped member having one fixed end fixed to said pillar and a free end;a supply-fluid bar-shaped member for holding said supply fluid measurement container and a filtrate bar-shaped member for holding said filtrate measurement container, said supply-fluid bar-shaped member and said filtrate bar-shaped member being provided on a surface of said bar-shaped member and being provided to respective two positions along a longitudinal direction of said bar-shaped member;a first torque sensor provided on a part between the respective two positions on said bar-shaped member, and said first torque sensor configured to detect a torque of one of said supply-fluid bar-shaped member and said filtrate bar-shaped member, the one being provided proximate the free end of said bar-shaped member;a second torque sensor provided on a part between (a) the respective two positions on said bar-shaped member and (b) the fixed end of said bar-shaped member, and said second torque sensor configured to detect a sum of (i) a torque of said supply-fluid bar-shaped member and (ii) a torque of said filtrate bar-shaped member. 11. The blood purification circuit according to claim 5, wherein said balance detector includes:a pillar;a bar-shaped member having one fixed end fixed to said pillar and a free end;a supply-fluid bar-shaped member for holding said supply fluid measurement container and a filtrate bar-shaped member for holding said filtrate measurement container, said supply-fluid bar-shaped member and said filtrate bar-shaped member being provided on a surface of said bar-shaped member and being provided to respective two positions along a longitudinal direction of said bar-shaped member;a first torque sensor provided on a part between the respective two positions on said bar-shaped member, and said first torque sensor configured to detect a torque of one of said supply-fluid bar-shaped member and said filtrate bar-shaped member, the one being provided proximate the free end of said bar-shaped member;a second torque sensor provided on a part between (a) the respective two positions on said bar-shaped member and (b) the fixed end of said bar-shaped member, and said second torque sensor configured to detect a sum of (i) a torque of said supply-fluid bar-shaped member and (ii) a torque of said filtrate bar-shaped member.
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이 특허에 인용된 특허 (8)
Polaschegg Hans-Dietrich (Oberursel DEX), Apparatus for extracorporeal treatment of blood.
Bene Bernard (Irigny FRX) Chevallet Jacques (Serezin du Rhone FRX), Artificial kidney and method for adjusting a concentration of substance in blood using thereof.
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