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    • 8. 发明专利
    • Method and device for measuring access flow
    • 用于测量流量的方法和装置
    • JP2009268922A
    • 2009-11-19
    • JP2009188465
    • 2009-08-17
    • Gambro Abガンブロ アーベー
    • STERNBY JANMISHKIN GARYASBRINK PERRYNILSSON EDDIE
    • A61B5/145A61M1/14A61M1/16A61M1/36G01F9/00
    • G01F9/00A61M1/16A61M1/1607A61M1/1609A61M1/361A61M1/3656A61M1/3658A61M1/3663A61M2202/0498A61M2205/15A61M2205/3317A61M2205/3324A61M2205/3331A61M2205/3334
    • PROBLEM TO BE SOLVED: To measure an access flow rate without interfering with blood and injecting a substance into the blood. SOLUTION: A device for estimating a fluid flow rate (Qa) in a fluid flow access comprises a means for removing a first fluid flow from the access in a removal position to an extracorporeal circuit comprising a dialyzer having a semipermeable membrane, making the first fluid flow pass one side of the semipermeable membrane along the semipermeable membrane, and making a dialysate emit from the other side of the semipermeable membrane, a means for returning the first fluid flow from the extracorporeal circuit to the access in a returning position downstream of the removal position, a means for measuring a first variation of quantity which is basically proportional to the concentration (Cd norm ) of the substance in the dialysate emitted from the dialyzer, a means for reversing the removal position relative to the returning position to measure a second variation of quantity which is basically proportional to the concentration (Cd rev ) of the substance in the dialysate in a reversed position, and a means for calculating the fluid flow rate (Qa) in the fluid flow access from the measured concentration. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:测量进入流速而不干扰血液并将物质注入血液。 解决方案:用于估计流体流动通道中的流体流速(Qa)的装置包括用于将去除位置中的进入的第一流体流除去包括具有半透膜的透析器的体外回路的装置, 第一流体流通过半透膜的一侧沿着半透膜,并且使透析液从半透膜的另一侧发射,用于将第一流体流从体外回路返回到下游返回位置的通路的装置 的去除位置的测量装置,用于测量与从透析器发射的透析液中的物质的浓度(Cd norm )基本成比例的量的第一变化的装置,用于反转去除位置的装置 相对于返回位置,以测量与透析液中物质的浓度(Cd rev )基本成比例的第二变化量 反转位置,以及用于从测量浓度计算流体流动通路中的流体流量(Qa)的装置。 版权所有(C)2010,JPO&INPIT