公开(公告)号：US07896831B2

公开(公告)日：2011-03-01

申请号：US12399792

申请日：2009-03-06

申请人： Jan Peter Sternby ,  Gary Joel Mishkin ,  Perry Asbrink ,  Eddie Nilsson

发明人： Jan Peter Sternby ,  Gary Joel Mishkin ,  Perry Asbrink ,  Eddie Nilsson

IPC分类号： A61M37/00 ,  C02F1/44

CPC分类号： A61M1/16 ,  A61M1/1607 ,  A61M1/1609 ,  A61M1/361 ,  A61M1/3656 ,  A61M1/3663 ,  A61M2202/0498 ,  A61M2205/15 ,  A61M2205/3317 ,  A61M2205/3324 ,  A61M2205/3331 ,  G01F9/00

摘要： A switch valve for use in an extracorporeal blood flow circuit comprises a valve housing having a chamber, four openings communicating with the chamber, and a valve member located in the valve chamber. A first opening is to be connected to a patient via an arterial cannula, a second opening is to be connected to a patient via an venous cannula, a third opening is to be connected to a first inlet/outlet of a blood treatment device, and a fourth opening is to be connected to a second inlet/outlet of a blood treatment device. The valve member is movable within the valve housing to fluidly connect the first opening to either the third or the fourth opening and to fluidly connect the second opening to either the third or the fourth opening. The width of the valve member is smaller than a peripheral dimension of the openings.

摘要翻译： 用于体外血流回路的切换阀包括具有腔室的阀壳体，与腔室连通的四个开口以及位于阀室中的阀构件。 第一开口经由动脉插管连接到患者，第二开口经由静脉插管连接到患者，第三开口连接到血液处理装置的第一入口/出口，以及 第四开口连接到血液处理装置的第二入口/出口。 阀构件可在阀壳体内移动以将第一开口流体连接到第三或第四开口，并且将第二开口流体连接到第三或第四开口。 阀构件的宽度小于开口的周边尺寸。

公开(公告)号：US06726647B1

公开(公告)日：2004-04-27

申请号：US09425124

申请日：1999-10-22

申请人： Jan Peter Sternby ,  Gary Joel Mishkin ,  Perry Asbrink ,  Eddie Nilsson

发明人： Jan Peter Sternby ,  Gary Joel Mishkin ,  Perry Asbrink ,  Eddie Nilsson

IPC分类号： A61M3700

CPC分类号： A61M1/16 ,  A61M1/1607 ,  A61M1/1609 ,  A61M1/361 ,  A61M1/3656 ,  A61M1/3663 ,  A61M2202/0498 ,  A61M2205/15 ,  A61M2205/3317 ,  A61M2205/3324 ,  A61M2205/3331 ,  G01F9/00

摘要： An arterial needle removes blood from the access to an extracorporeal circuit comprising a dialyzer and a venous needle returns the blood to the access site. Blood passes along one side of the membrane of the dialyzer and dialysis fluid along the other side. The concentration (Cd norm and Cd rev) of urea in the dialysate emitted from the dialyzer is measured with the needles in the normal position and in a reversed position. The access flow rate before the arterial needle is calculated according to the formula: Cd norm/Cd rev=1+Keff/Qa in which Keff is the effective clearance of the dialyzer and Qa is the access flow rate.

摘要翻译： 动脉针将血液从进入包括透析器的体外回路中的血液清除，静脉针将血液返回到进入部位。 血液沿着透析器的膜的一侧沿着另一侧通过透析液。 透析器发出的透析液中的尿素浓度（Cd norm和Cd rev）用针在正常位置和相反位置进行测量。 根据以下公式计算动脉针前的通行流量：其中Keff是透析器的有效间隙，Qa是进入流量。