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    Pressure Measurement Devices, Methods, and Systems
    1.
    发明申请
    Pressure Measurement Devices, Methods, and Systems 有权

    公开(公告)号：US20230112605A1

    公开(公告)日：2023-04-13

    申请号：US18078299

    申请日：2022-12-09

    申请人： NxStage Medical, Inc.

    发明人： James M. BRUGGER ,  Dennis M. TREU ,  Jeffrey H. BURBANK ,  Scott W. NEWELL ,  William J. SCHNELL ,  Kenneth E. BUCKLER

    IPC分类号： A61M1/36 ,  G01L19/00 ,  G01L9/00

    摘要： A method for measuring pressure includes securing a flow channel to a chassis of a measurement device, the flow channel having a flexible wall with a first mechanical engagement feature presented from an external surface thereof. The method also includes engaging the mechanical engagement feature with a complementary engagement member connected to a force transducer, the securing being effective to immobilize the flow channel relative to the force transducer, and detecting at least one of the position and orientation of the of the flow channel relative to transducer and comparing to at least one of a predefined position and orientation. Further, the method includes generating a signal responsive to the detecting, flowing a fluid through the flow channel, and transmitting forces caused by displacement of the flexible wall through the complementary engagement member to the force transducer. Further, electrical signals are generated responsively to a state of the force transducer.

    Dialysis Systems, Devices, and Methods
    2.
    发明申请
    Dialysis Systems, Devices, and Methods 有权

    公开(公告)号：US20210386923A1

    公开(公告)日：2021-12-16

    申请号：US17412846

    申请日：2021-08-26

    申请人： NxStage Medical, Inc.

    发明人： Jeffrey H. BURBANK ,  James M. BRUGGER ,  Dennis M. TREU ,  Mark T. WYETH

    IPC分类号： A61M1/28 ,  A61M1/16

    摘要： A treatment device system includes a treatment machine for performing a therapy on a patient, the treatment machine including at least one fluid conveyor and a controller, the controller having a first memory, to cause the at least one fluid conveyor to produce a therapeutic fluid by mixing purified water and at least one concentrate. The system also includes and a water purifier in fluid communication with and providing the purified water to the treatment machine. A wired or wireless control line provides two way communication between the controller of the treatment machine and the internal central controller of the water purifier, wherein the controller of the treatment machine transmits data via the control line to the internal central controller of the water purifier for control of the water purifier, the data provided based on at least one of the operator inputs received via the user interface.

    Water Treatment Systems, Devices, and Methods for Fluid Preparation
    4.
    发明申请
    Water Treatment Systems, Devices, and Methods for Fluid Preparation 有权

    公开(公告)号：US20210178041A1

    公开(公告)日：2021-06-17

    申请号：US17189879

    申请日：2021-03-02

    申请人： NxStage Medical, Inc.

    发明人： Goetz FRIEDERICHS ,  Dennis M. TREU ,  Jeffrey H. BURBANK ,  Yuriy N. TATASHIN

    IPC分类号： A61M1/16 ,  C02F1/28 ,  C02F1/42

    摘要： A method of automatically ensuring against chloramine contamination in purified product water includes supplying input water to the system and purifying the water to generate the purified product water. The purifying includes removing chlorine and chloramine contamination from the water using a carbon filter and supplying chlorine-depleted water to a deionization filter, and deionizing the chlorine-depleted water using said deionization filter. The product water is supplied to a sensor for continuous monitoring of the resistivity of the purified product water by the first sensor, and an alarm is generated indicating possible chloramine breakthrough when the resistivity of the product water falls below a predetermined resistivity level, which is selected to provide a reserve filter capacity before breakthrough would occur. The carbon filter is replaced at least responsively to the alarm to ensure excess capacity of said carbon filter sufficient to prevent chloramine breakthrough in said product water.

    Medical Device Leak Sensing Devices, Methods, and Systems
    9.
    发明申请
    Medical Device Leak Sensing Devices, Methods, and Systems 审中-公开

    公开(公告)号：US20170312419A1

    公开(公告)日：2017-11-02

    申请号：US15655091

    申请日：2017-07-20

    申请人： NXSTAGE MEDICAL, INC.

    发明人： Jeffrey H. BURBANK ,  Dennis M. TREU ,  James M. BRUGGER ,  Daniel Joseph RUBERY, JR.

    IPC分类号： A61M1/36 ,  G01M3/04

    CPC分类号： A61M1/3656 ,  A61M1/367 ,  A61M2205/15 ,  G01M3/04 ,  Y10T137/5762

    摘要： Features for protecting against leaks in a fluid circuit are disclosed. In an embodiment, a first indicator of a leak is used to trigger confirmation by blood flow reversal and air detection in the blood circuit. A method for performing a blood treatment includes, at blood treatment machine, pumping blood to a patient through a first blood line. Further, at a controller of the blood treatment machine, a first signal is received, indicating a probability of a leak in the first blood line. Responsively to the first signal, the controller commands a leak verification operation and receives a second signal indicating whether a leak in the first blood line is verified. Further, a leak indicating signal is generated if the second signal indicates a leak is verified.