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    VOLUMETRIC INFUSION PUMP
    31.
    发明专利
    VOLUMETRIC INFUSION PUMP 未知

    公开(公告)号：CA2223838A1

    公开(公告)日：1997-10-16

    申请号：CA2223838

    申请日：1997-03-21

    Applicant: BAXTER INT

    Inventor： TURNER JOHN M ,  LABEDZ RALPH H ,  STEWART JANICE ,  LYNN KENNETH M ,  PLUMB JON ,  PAGE STUART ,  MYREN SVANTE ERIC ,  MORASKI KEVIN J ,  MCGRAGHAN THOMAS ,  HARRIS MARK ,  BRUNDLE ALAN ,  DANBY HAL ,  ALLEN TIM ,  HUTCHINS GEOFF ,  MONAGHAN MARTIN

    IPC: A61M5/00 ,  A61M1/00 ,  A61M5/14 ,  A61M5/142 ,  A61M5/168 ,  A61M5/36 ,  A61M39/28 ,  B01J4/00 ,  F04B43/08 ,  F04B43/12 ,  F04B53/16 ,  F04C5/00

    Abstract: A medical infusion pump is disclosed which provides for greatly improved accuracy in the delivery of medicaments to a patient. Among the various features included in the instant invention is a pumping body which serves to deform and reform a tube so as to maintain the initial cross section thereof and thereby preserve the output accuracy of the pump. Also disclosed with regard to the pumping body is a wholly mechanical synchronization of the pumping body and valves associated therewith and coactive with the aforementioned synchronization a mechanical linearization of output of the pumping body per each pumping cycle. Additionally, several features which serve to enhance the utility of the instant invention are also included therein among which is an associated assembly operative to automatically load or disload a tube or IV set into or out of the pumping body. Associated with the assembly operative to automatically load or disload a tube and disclosed herein is an assembly operative to selectively open or close a slide clamp associated with the tube in such a way as to ensure that the tube is occluded such that in combination with the valves associated with the pumping body, a condition of free-flow of medicament is never realized. Additionally disclosed are sensor housings adapted to measure various quantities associated with fluid flowing through the tube wherein the housings are with associated components adapted to achieve a substantially normal orientation with respect to the sidewall of the tube and in the achieving of such normal orientation, expressing an essentially zero elastic stress gradient across the tube.

    INFUSION PUMP
    34.
    发明专利
    INFUSION PUMP 未知

    公开(公告)号：CA2854094A1

    公开(公告)日：2003-12-24

    申请号：CA2854094

    申请日：2002-11-15

    Applicant: BAXTER INT

    Inventor： GILLESPIE JOHN JR ,  LABEDZ RALPH H ,  PLATT MICHAEL KENNETH ,  SPANG RONALD H JR ,  BERRILL JAMES FREI ,  VOGEL MATTHEW STEPHEN ,  GREANEY MICHELLE KOWALSKI

    IPC: A61M5/145 ,  A61M5/142 ,  A61M5/172

    Abstract: An infusion pump comprises a housing including a compartment structured to receive a syringe, the syringe including a syringe barrel and a syringe plunger moveable within the syringe barrel; a drive mechanism supported by the housing, the drive mechanism structured and arranged to contact the syringe plunger and move the syringe plunger within the syringe barrel; and a syringe plunger position sensor including: a magnet positioned on the drive mechanism; a magnetic sensor array supported by the housing and positioned adjacent to the magnet, the magnetic sensor array configured to generate an output indicative of a magnetic field associated with the magnet; and software installed on the pump and configured to use the output to determine a linear position of the syringe plunger within the syringe barrel.

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