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    Pressure measurement devices, methods, and systems
    5.
    发明授权
    Pressure measurement devices, methods, and systems 有权

    公开(公告)号：US11529448B2

    公开(公告)日：2022-12-20

    申请号：US16420249

    申请日：2019-05-23

    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 ,  G01L9/00 ,  G01L19/00

    摘要： A pressure measurement pod for use in blood circuits includes a pressure sensing pod defining a chamber and having a rigid wall portion and an integral flexible wall portion forming a flexible, moveable, fluid-impermeable diaphragm with a first major side thereof facing an interior of the chamber and a second major side opposite the first major side. The second major side faces outwardly away from the chamber, and the pod has ports on sides of the chamber. The internal surfaces of the chamber and ports are shaped such that any contour following the internal surfaces to the outside of one of the ports traces only surfaces characterized by positive or neutral draft angles such that invasive mold portions may be withdrawn through the ports thereby permitting the pressure measurement pod to be molded in a single shot molding process.

    Peritoneal dialysis systems, devices, and methods
    6.
    发明授权
    Peritoneal dialysis systems, devices, and methods 有权

    公开(公告)号：US11135348B2

    公开(公告)日：2021-10-05

    申请号：US15820672

    申请日：2017-11-22

    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 ,  A61M25/00

    摘要： An automated peritoneal dialysis system provides both cycler-assisted peritoneal dialysis treatment and also continuous ambulatory peritoneal dialysis (CAPD). The system includes a fluid preparation and treatment device with a concentrate dilution components connected to a source of purified water and medicament concentrate. The treatment device has at least one mixing container connected via a pump and valves to the sources, the valves and the pump mixing and diluting the concentrate to form a medicament. An auxiliary port is provided for attaching a CAPD container and for receiving medicament. A controller is programmed to control the fluid preparation and treatment device to implement one or more cycler-assisted peritoneal dialysis treatment cycles using medicament from the mixing container and also to control the preparation of additional dialysate at the end of the cycler-assisted peritoneal dialysis treatment cycles to dispense additional dialysate through the auxiliary port for use in CAPD.

    Water treatment systems, devices, and methods for fluid preparation
    7.
    发明授权
    Water treatment systems, devices, and methods for fluid preparation 有权

    公开(公告)号：US10960121B2

    公开(公告)日：2021-03-30

    申请号：US15924425

    申请日：2018-03-19

    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 ,  C02F1/00 ,  C02F1/44 ,  C02F103/02 ,  C02F1/32 ,  C02F101/12

    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
    10.
    发明公开
    Medical Device Leak Sensing Devices, Methods, and Systems 审中-公开

    公开(公告)号：US20230338635A1

    公开(公告)日：2023-10-26

    申请号：US18218272

    申请日：2023-07-05

    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 ,  G01M3/04 ,  Y10T137/5762 ,  A61M2205/15

    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.