公开(公告)号：EP0929363A4

公开(公告)日：2000-06-21

申请号：EP98911686

申请日：1998-03-16

申请人： BAXTER INT

发明人： WEST RICHARD L ,  PATNO TIMOTHY J

IPC分类号： A61M1/02 ,  B04B1/04 ,  B04B5/04 ,  B04B7/00 ,  B04B9/00 ,  B04B11/00

CPC分类号： B04B5/0442 ,  B04B2005/045 ,  B04B2005/0492

摘要： A blood processing centrifuge includes a disposable fluid processing assembly having a fluid processing chamber (16). Fluid is communicated to and from the fluid processing chamber (16) through a flexible umbilicus (24). The fluid processing chamber (16) spins while the centrifuge pulls the umbilicus (24) around an axis of centrifugation. The centrifuge engages the umbilicus (24) through a thrust bearing received in a gimbal assembly (78) carried on a rotating wing plate (72). The gimbal assembly (78) allows the umbilicus (24) to pivot relative to the wing plate (72) under the forces developed during centrifugation. The gimbal assembly (78) includes a bearing retainer adapted to securely retain umbilicus thrust bearings of differing sizes and a gimbal retains the bearing retainer loosely but securely.

公开(公告)号：EP1229978A4

公开(公告)日：2005-12-14

申请号：EP00972096

申请日：2000-10-12

申请人： BAXTER INT

发明人： BROWN RICHARD I ,  FOLEY JOHN T ,  PATNO TIMOTHY J

IPC分类号： G01N33/49 ,  A61M1/02 ,  A61M1/30 ,  A61M1/36 ,  B01D17/02 ,  B01D21/24 ,  B01D21/26 ,  B04B5/04 ,  B04B13/00 ,  G01N21/59 ,  B01D17/12

CPC分类号： B01D21/26 ,  A61M1/30 ,  A61M1/302 ,  A61M1/303 ,  A61M1/308 ,  A61M1/3693 ,  A61M1/3696 ,  A61M2202/0427 ,  A61M2205/331 ,  A61M2205/50 ,  B01D17/0217 ,  B01D21/0003 ,  B01D21/2405 ,  B01D21/245 ,  B01D21/262 ,  B01D21/32 ,  B01D2221/08 ,  B01D2221/10 ,  B04B5/0442 ,  B04B13/00 ,  A61M2202/0071

摘要： Blood processing systems and methods separate blood into constituents including a plasma constituent that includes a platelet volume. The systems and methods detect the optical density of the plasma constituent and generate a first output indicative of the optical density. A processing element integrates the first output relative to the volume of plasma constituent and generates an integrated output. The integrated output correlates to the platelet volume. A second processing element generates an output based, at least in part, upon the integrated output, which comprises a value indicating a blood volume that needs be processed to obtain a desired platelet volume.

公开(公告)号：EP1027539A4

公开(公告)日：2002-02-06

申请号：EP98953692

申请日：1998-10-19

申请人： BAXTER INT

发明人： SAHLIN MARK P ,  PATNO TIMOTHY J

IPC分类号： F04B43/12 ,  F04B49/06 ,  F04B49/00 ,  F04B49/08

CPC分类号： F04B49/065 ,  F04B43/12 ,  F04B2203/0209 ,  F04B2205/01

摘要： A controller (28) for a peristaltic pump (12) receives an input pressure Pi sensed at the inlet (24) of the pump (12). The controlled (28) derives a nonlinear scale factor Spi that varies as a step function with Pi. The scale factor Spi equals a first non-variable value when Pi lays in a first defined zone of inlet pressures, and equals a second non-variable value, different than the first non-variable value, when Pi lays in a second defined zone of inlet pressures different that the first defined zone of inlet pressures. The controller (28) generates a pump speed command based, at least in part, upon Spi.

公开(公告)号：EP0719386A4

公开(公告)日：1996-12-04

申请号：EP95906180

申请日：1995-01-09

申请人： BAXTER INT

发明人： PATNO TIMOTHY J ,  BROWN RICHARD I ,  CORK WILLIAM H

IPC分类号： A61M1/10 ,  A61M1/36 ,  F04B43/00 ,  F04B43/12 ,  F04B43/09

CPC分类号： F04B43/0081 ,  A61M1/30 ,  A61M1/302 ,  A61M1/303 ,  A61M1/3693 ,  A61M1/3696 ,  A61M2205/12 ,  F04B43/1253 ,  F04B2203/0209

摘要： A peristaltic pumping apparatus and associated method control power to the pump rotor to establish, during a preestablished first time period, a selected first angular velocity and sequentially establishing during a preestablished second time period immediately following the first time period a second angular velocity different than the first angular velocity. In this fashion, the apparatus and method achieve flow rates well below the minimum continuous flow rate of the rotor.

公开(公告)号：EP0690960A4

公开(公告)日：1996-02-28

申请号：EP94912800

申请日：1994-03-17

申请人： BAXTER INT

发明人： AFFLERBAUGH RICHARD L ,  WEST RICHARD L ,  PATNO TIMOTHY J ,  CHAPMAN ARTHUR S

IPC分类号： A61M1/02 ,  A61M1/10 ,  A61M1/36 ,  F04B43/12 ,  F04B43/08

CPC分类号： F04B43/1253 ,  A61M1/30 ,  A61M1/303 ,  A61M1/3693 ,  A61M1/3696 ,  A61M2205/12

摘要： A self-loading peristaltic pumping apparatus includes a pump race (296) for receiving a tubing loop, a pump rotor (298) carrying a roller (300), and a drive mechanism for rotating the rotor within the pump race. The apparatus also includes a roller locating mechanism (306) that moves the pump roller between a retracted position, free of contact with the received tubing loop (134, 136), and an extended position, at least partially within the pump race for operative contact with the received tubing loop. The apparatus includes at least one tubing guide element (304) carried by the rotor. The guide element extends from the rotor at least partially into the pump race. The guide element serves during rotation of the rotor with the roller in its retracted position, for contacting the received tubing loop (134, 136) to orient the tubing loop within the pump race.

摘要翻译： 自加载蠕动泵送装置包括用于接收管道回路的泵座，承载辊的泵转子和用于在泵座内旋转转子的驱动机构。 该设备还包括滚子定位机构，其将泵辊移动到与接收的管道回路无接触的缩回位置和延伸位置，该延伸位置至少部分地在泵座内用于与接收的管道回路有效接触。 该设备包括由转子承载的至少一个导管元件。 引导元件至少部分地从转子延伸到泵座中。 引导元件在转子旋转期间用于辊在其缩回位置的转动，用于接触所接收的管道回路以使泵环内的管路定向。