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    PERITONEAL DIALYSIS SYSTEM WITH VARIABLE PRESSURE DRIVE
    13.
    发明专利
    PERITONEAL DIALYSIS SYSTEM WITH VARIABLE PRESSURE DRIVE 未知

    公开(公告)号：GR3035360T3

    公开(公告)日：2001-05-31

    申请号：GR20010400185

    申请日：2001-02-02

    Applicant: BAXTER INT

    Inventor： PACKARD WARREN J

    IPC: A61M5/00 ,  A61M1/14 ,  A61M1/28 ,  A61M5/142 ,  A61M5/148 ,  A61M5/145 ,  A61M5/168

    Abstract: A variable pressure drive peritoneal dialysis system has a pneumatic pressure system for purging and controlling a flow of dialysate through a disposable dialysate cassette of a disposable dialysate delivery set. The pneumatic pressure system has a variable-opening flow proportional valve for supplying air at selected profiled pressure or vacuum to a pneumatic interface. The disposable dialysate cassette has a diaphragm pump actuable by the profiled air pressure or vacuum to move dialysate to and from a patient via the disposable dialysate delivery set at a desired profiled dialysate pressure.

    INSTANTANEOUS VOLUME MEASUREMENT SYSTEM AND METHOD FOR NON-INVASIVELY MEASURING LIQUID PARAMETERS
    14.
    发明专利
    INSTANTANEOUS VOLUME MEASUREMENT SYSTEM AND METHOD FOR NON-INVASIVELY MEASURING LIQUID PARAMETERS 未知

    公开(公告)号：CA2165422A1

    公开(公告)日：1995-11-20

    申请号：CA2165422

    申请日：1995-04-21

    Applicant: BAXTER INT

    Inventor： PACKARD WARREN J ,  PAWLAK KENNETH E

    IPC: A61M1/14 ,  A61M5/168 ,  F04B43/02 ,  F04B43/06 ,  F04B49/00 ,  G01F1/00 ,  G01F1/86 ,  G01F1/34 ,  G01F1/90

    Abstract: A non-invasive technique and system is provided for measuring flow of liquid driven by a flexible diaphragm of a membrane pump (18). Flow, pressure and/or temperature of a gas, such as air, used to drive the pump (18) is continuously monitored. Instantaneous volume of liquid being pulled into or out of a chamber of the pump (18) can be calculated from measured values of the gas used to drive the pump (18). Sensors (10, 12 and/or 14) are used to measure values relating to the gas. The sensed parameters are concurrently monitored and continuously determine the amount of gas flowing to and from the diaphragm of the membrane pump (18) utilized to move liquid within a liquid pathway. The measurement may then be used to calculate the instantaneous flow rate of the liquid.

    ELECTROFLUIDIC STANDARD MODULE AND CUSTOM CIRCUIT BOARD ASSEMBLY
    15.
    发明专利
    ELECTROFLUIDIC STANDARD MODULE AND CUSTOM CIRCUIT BOARD ASSEMBLY 未知

    公开(公告)号：CA2214510C

    公开(公告)日：2004-06-08

    申请号：CA2214510

    申请日：1996-01-26

    Applicant: BAXTER INT ,  IC SENSORS INC

    Inventor： PACKARD WARREN J ,  JERMAN JOHN H

    IPC: F15B21/06 ,  A61M1/28 ,  F15C5/00 ,  F16K99/00 ,  F16K31/02

    Abstract: A miniature electrofluidic module (10, 310) is disclosed, for receiving one or more fluids and for receiving an electrical connection. In accordance with one aspect of the invention, the module (10, 310) includes a substantially flat fluidic manifold layer (64 364) for fluid distribution, a substantially flat electrical layer (80, 380) including an electrical circuit (16, 316) and a substantially flat device layer (13) including micromachined devices (14). The devices (14) may include electrically actuated valves (14) for modulating the flow of fluids. In another aspect of the invention, an electrofluidic module (10, 310) is combined with an electrofluidic circuit board (196, 250). In a further aspect, an electrofluidic system such as a dialysate handling system is 14 disclosed, including a fluidic fixture (196) and an electrofluidic assembly (198) incorporating electrofluidic devices (14). In a still further aspect of the invention, a method is disclosed for interfacing micromachined devices (14) to electrical and fluidic interfaces on a fixture (196, 250) including packaging the devices (14) into a module (10, 310) and providing electrical and fluidic interfaces between the module (10, 310) and the fixture (196, 250).

    SISTEMA Y METODO DE MEDICION INSTANTANEA DEL VOLUMEN, PARA MEDIR EN FORMA NO INVASIVA LOS PARAMETROS DE LIQUIDO.
    17.
    发明专利
    SISTEMA Y METODO DE MEDICION INSTANTANEA DEL VOLUMEN, PARA MEDIR EN FORMA NO INVASIVA LOS PARAMETROS DE LIQUIDO. 未知

    公开(公告)号：MX9600252A

    公开(公告)日：1998-11-30

    申请号：MX9600252

    申请日：1996-01-16

    Applicant: BAXTER INT

    Inventor： PACKARD WARREN J ,  PAWLAK KENNETH E

    IPC: A61M1/14 ,  A61M5/168 ,  F04B43/02 ,  F04B43/06 ,  F04B49/00 ,  G01F1/00 ,  G01F1/86 ,  A61M05/168 ,  G01F01/34 ,  G01F17/00

    Abstract: Se proporciona una técnica no invasiva y un sistema para medir el flujo del líquido impulsado por un diafragma flexible de una bomba de membrana (18). Se monitorea o se verifica de manera continua el flujo, la presion y/o la temperatura de un gas, tal como aire, usado para impulsar la bomba (18). El volumen instantáneo del líquido que es jalado dentro de, o fuera de, una cámara de la bomba (18) se puede calcular a partir de los valores medidos del gas usado para impulsar la bomba (18). Se usan censores o detectores (10, 12 y/o 14) para medir los valores relacionados con el gas. Los parámetros detectados se monitorean o verifican concurrentemente y se determina de manera continua la cantidad de gas que fluye hacia, y desde, el diafragma de la bomba de membrana (18) utilizada para mover el líquido dentro de una trayectoria líquida. Las mediciones luego se pueden usar para calcular la velocidad de flujo instantánea del líquido.

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