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    SYSTEM FOR CALCULATING A CHANGE IN FLUID VOLUME IN A PUMPING CHAMBER
    1.
    发明申请
    SYSTEM FOR CALCULATING A CHANGE IN FLUID VOLUME IN A PUMPING CHAMBER 审中-公开
    计算泵送液体流量变化的系统

    公开(公告)号：WO2015188154A8

    公开(公告)日：2017-01-19

    申请号：PCT/US2015034570

    申请日：2015-06-05

    Applicant: DEKA PRODUCTS LP

    Inventor： NORRIS MICHAEL G ,  SCARPACI JACOB W ,  BRYANT ROBERT J ,  SPENCER GEOFFREY P ,  GIROUARD PAUL G ,  KAROL DANIEL S ,  SINGER DANIEL B ,  RUSHLOW JOSEPH P ,  HIBBARD DAVID J ,  DALE JAMES D ,  KERWIN JOHN M ,  COLL ANDREW S ,  BEAVERS DAVID A ,  MCGILL DAVID W ,  HELMORE SIMON C ,  DOHERTY DAVID B ,  BOLTON EDGAR J ,  YOO JINSUN

    IPC: A61M1/10 ,  A61M1/28 ,  A61M1/30

    CPC classification number: A61M39/22 ,  A61M1/1006 ,  A61M1/1012 ,  A61M1/1037 ,  A61M1/106 ,  A61M1/1062 ,  A61M1/1086 ,  A61M1/1087 ,  A61M1/1096 ,  A61M1/166 ,  A61M1/28 ,  A61M1/282 ,  A61M1/288 ,  A61M2205/12 ,  A61M2205/3331 ,  A61M2205/3334 ,  A61M2205/3379 ,  A61M2205/3396 ,  A61M2205/6063

    Abstract: Improvements in fluid volume measurement systems are disclosed for a pneumatically actuated diaphragm pump in general, and a peritoneal dialysis cycler using a pump cassette in particular. Pump fluid volume measurements are based on pressure measurements in a pump control chamber and a reference chamber in a two-chamber model, with different sections of the apparatus being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of a diaphragm pump are also disclosed, in this case using a one-chamber ideal gas model and using a high speed processor to obtain and process pump control chamber pressures during fluid flow into or out of the pump chamber. Improved heater control circuitry is also disclosed, to provide added or redundant safety measures, or to reduce current leakage from a heater element during pulse width modulation control of the heater. Improvements are also disclosed in the application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control the amount of intraperitoneal fluid accumulation during a therapy. Improvements in efficiency are also disclosed in the movement of fluid into and out of a two-pump cassette and heater bag of a peritoneal dialysis cycler, and in the synchronization of the operation of two or more pumps in a peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

    Abstract translation: 一般来说，对气动驱动的隔膜泵公开了流体体积测量系统的改进，特别是使用泵盒的腹膜透析循环仪。 泵流体体积测量基于泵室控制室中的压力测量和双室模型中的参考室，其中该设备的不同部分使用绝热，等温和多变过程的组合进行建模。 还公开了在隔膜泵的泵室中的实时或瞬时流体流量测量，在这种情况下使用单室理想气体模型并且使用高速处理器在流体流入或流出期间获得和处理泵控制室压力 的泵室。 还公开了改进的加热器控制电路，以在加热器的脉冲宽度调制控制期间提供附加的或冗余的安全措施，或减少来自加热器元件的电流泄漏。 在腹膜透析治疗期间在排水阶段中施加负压并且在治疗期间控制腹膜内液体积累的量也公开了改进。 流体进出腹膜透析循环仪的双泵盒和加热袋，以及在腹膜透析循环仪或其他流体处理中两个或多个泵的操作的同步中也公开了效率的改善 使用多泵排列的装置。

    SYSTEMS AND METHODS FOR DETECTING VASCULAR ACCESS DISCONNECTION
    2.
    发明申请
    SYSTEMS AND METHODS FOR DETECTING VASCULAR ACCESS DISCONNECTION 审中-公开
    用于检测血管通路断开的系统和方法

    公开(公告)号：WO2015183976A8

    公开(公告)日：2016-02-11

    申请号：PCT/US2015032702

    申请日：2015-05-27

    Applicant: DEKA PRODUCTS LP

    Inventor： VAN DER MERWE DIRK A ,  NORRIS MICHAEL G ,  BAKER MICHAEL A ,  BALLANTYNE TODD A ,  WILT MICHAEL J

    IPC: A61M1/36

    CPC classification number: A61M1/3656 ,  A61M1/365 ,  A61M2205/13 ,  A61M2205/3317

    Abstract: A system for detecting whether a vascular access has been interrupted in an arrangement in which two catheters or needles are present in a blood vessel, fistula or graft. A fluid line leading to a pump is connected via a first connector to a first indwelling catheter, and a fluid line leading from a pump is connected via a second connector to a second indwelling catheter. Each connector is equipped with an electrode in contact with the lumen of the connector, the electrodes electrically connected to an electronic circuit that measures the impedance or conductivity of fluid between the first connector and second connectors via a fluid path through the blood vessel, fistula or graft. An electronic controller receives the impedance or conductivity data and processes the data to determine whether a vascular access disconnection has occurred. The processing may involve filtering the signal received by the controller, and/or setting provisional flags for a disconnection event that may be cleared if the signal changes before the expiration of a counter.

    Abstract translation: 用于检测在血管，瘘管或移植物中存在两个导管或针头的布置中血管通路是否被中断的系统。 通过泵的流体管线经由第一连接器连接到第一留置导管，并且从泵引出的流体管线经由第二连接器连接到第二留置导管。 每个连接器配备有与连接器的内腔接触的电极，电极电连接到电子电路，该电子电路经由血管，瘘管或血管的流体路径测量第一连接器和第二连接器之间的流体的阻抗或导电性 接枝。 电子控制器接收阻抗或电导率数据并处理数据以确定是否发生血管通路断开。 处理可以包括过滤由控制器接收的信号，和/或设置用于断开事件的临时标志，如果信号在计数器期满之前改变，可以将其清除。

    SYSTEMS AND METHODS FOR DETECTING VASCULAR ACCESS DISCONNECTION
    3.
    发明申请
    SYSTEMS AND METHODS FOR DETECTING VASCULAR ACCESS DISCONNECTION 审中-公开
    用于检测血管通路断开的系统和方法

    公开(公告)号：WO2015183976A3

    公开(公告)日：2015-12-30

    申请号：PCT/US2015032702

    申请日：2015-05-27

    Applicant: DEKA PRODUCTS LP

    Inventor： VAN DER MERWE DIRK A ,  NORRIS MICHAEL G ,  BAKER MICHAEL A ,  BALLANTYNE TODD A ,  WILT MICHAEL J

    IPC: A61M1/36

    CPC classification number: A61M1/3656 ,  A61M1/365 ,  A61M2205/13 ,  A61M2205/3317

    Abstract: A system for detecting whether a vascular access has been interrupted in an arrangement in which two catheters or needles are present in a blood vessel, fistula or graft. A fluid line leading to a pump is connected via a first connector to a first indwelling catheter, and a fluid line leading from a pump is connected via a second connector to a second indwelling catheter. Each connector is equipped with an electrode in contact with the lumen of the connector, the electrodes electrically connected to an electronic circuit that measures the impedance or conductivity of fluid between the first connector and second connectors via a fluid path through the blood vessel, fistula or graft. An electronic controller receives the impedance or conductivity data and processes the data to determine whether a vascular access disconnection has occurred. The processing may involve filtering the signal received by the controller, and/or setting provisional flags for a disconnection event that may be cleared if the signal changes before the expiration of a counter.

    Abstract translation: 一种用于在血管，瘘管或移植物中存在两个导管或针的装置中检测血管通路是否被中断的系统。 通向泵的流体管线经由第一连接器连接至第一留置导管，并且从泵引出的流体管线经由第二连接器连接至第二留置导管。 每个连接器配备有与连接器的内腔接触的电极，所述电极电连接至电子电路，所述电子电路经由穿过血管的流体路径，瘘管或瘘管测量第一连接器与第二连接器之间的流体的阻抗或电导率 接枝。 电子控制器接收阻抗或电导率数据并处理数据以确定是否发生血管通路断开。 该处理可以涉及过滤由控制器接收的信号，和/或设置用于断开事件的临时标志，如果信号在计数器到期之前改变，则断开事件可以被清除。

    Apparatus for infusing fluid
    5.
    发明专利
    Apparatus for infusing fluid 未知

    公开(公告)号：AU2018202508A1

    公开(公告)日：2018-05-10

    申请号：AU2018202508

    申请日：2018-04-10

    Applicant: DEKA PRODUCTS LP

    Inventor： KAMEN DEAN ,  KERWIN JOHN M ,  MURPHY COLIN H ,  GRAY LARRY B ,  PARKER JONATHAN ,  BAIER MICHAEL J ,  LANGENFELD CHRISTOPHER C ,  BIASI JOHN J ,  VAN DER MERWE DIRK A ,  BLUMBERG JR DAVID ,  PLACE MICHAEL S ,  SLATE MICHAEL J ,  PAWLOWSKI DANIEL F ,  SABIN ERIK N ,  NORRIS MICHAEL G ,  THERRIEN ALEXANDER R

    IPC: A61M5/142 ,  A61M5/168

    Abstract: A pump for pumping fluid, the pump comprising a tube platen; a plunger configured for actuation toward and away from the tube platen when the tube platen is disposed opposite to the plunger; a bias member configured to urge the plunger toward the tube platen; an inlet 5 valve upstream of the plunger configured for actuation between an occluding position and a non-occluding position; an outlet valve downstream of the plunger configured for actuation between an occluding position and a non-occluding position; an actuator mechanism configured to control the actuation of the plunger, the inlet valve and the outlet valve, wherein the actuator mechanism is configured to mechanically engage and disengage from 10 the plunger, wherein when the actuator mechanism is disengaged from the plunger, the actuator mechanism is configured to mechanically discharge the bias member such that the plunger is a sole force driving the plunger toward the tube platen, wherein the actuator mechanism is configured to engage the plunger to lift the plunger away from the tube platen to thereby mechanically charge the bias member; a pressure sensor disposed adjacent to at 15 least one of the inlet valve, the outlet valve, and the plunger; a position sensor configured to estimate a position of the plunger; and a processor coupled to the position sensor to receive the estimated position of the plunger therefrom. The processor is configured to detect an anomaly based in part on the estimated plunger position when: the inlet valve is in the occluding position, the outlet valve is in the occluding position, the actuator mechanism is 20 mechanically disengaged from the plunger thereby making the bias member the sole source of actuation force of the plunger toward the tube platen, and the bias member urges the plunger toward the tube platen. The processor is further coupled to the pressure sensor to receive a pressure signal from the pressure sensor, the processor is configured to, using the pressure signal, to determine a downstream occlusion exists if a subtraction of a filtered 25 value of a sequential series of sequential trough-to-trough pressure values of a plurality of cycles from a trough-to-trough value is greater than a predetermined threshold. C0) C r 0)0 a)V

    Apparatus for infusing fluid
    7.
    发明专利
    Apparatus for infusing fluid 未知

    公开(公告)号：AU2017204264A1

    公开(公告)日：2017-07-13

    申请号：AU2017204264

    申请日：2017-06-23

    Applicant: DEKA PRODUCTS LP

    Inventor： KAMEN DEAN ,  KERWIN JOHN M ,  MURPHY COLIN H ,  GRAY LARRY B ,  PARKER JONATHAN ,  BAIER MICHAEL J ,  LANGENFELD CHRISTOPHER C ,  BIASI JOHN J ,  VAN DER MERWE DIRK A ,  BLUMBERG JR DAVID ,  PLACE MICHAEL S ,  SLATE MICHAEL J ,  PAWLOWSKI DANIEL F ,  SABIN ERIK N ,  NORRIS MICHAEL G ,  THERRIEN ALEXANDER R

    IPC: A61M5/142 ,  A61M5/168

    Abstract: A pump for pumping fluid, the pump comprising a tube platen; a plunger configured for actuation toward and away from the tube platen when the tube platen is disposed opposite to the plunger; a bias member configured to urge the plunger toward the tube platen; an inlet 5 valve upstream of the plunger configured for actuation between an occluding position and a non-occluding position; an outlet valve downstream of the plunger configured for actuation between an occluding position and a non-occluding position; an actuator mechanism configured to control the actuation of the plunger, the inlet valve and the outlet valve, wherein the actuator mechanism is configured to mechanically engage and disengage from 10 the plunger, wherein when the actuator mechanism is disengaged from the plunger, the actuator mechanism is configured to mechanically discharge the bias member such that the plunger is a sole force driving the plunger toward the tube platen, wherein the actuator mechanism is configured to engage the plunger to lift the plunger away from the tube platen to thereby mechanically charge the bias member; a pressure sensor disposed adjacent to at 15 least one of the inlet valve, the outlet valve, and the plunger; a position sensor configured to estimate a position of the plunger; and a processor coupled to the position sensor to receive the estimated position of the plunger therefrom. The processor is configured to detect an anomaly based in part on the estimated plunger position when: the inlet valve is in the occluding position, the outlet valve is in the occluding position, the actuator mechanism is 20 mechanically disengaged from the plunger thereby making the bias member the sole source of actuation force of the plunger toward the tube platen, and the bias member urges the plunger toward the tube platen. The processor is further coupled to the pressure sensor to receive a pressure signal from the pressure sensor, the processor is configured to, using the pressure signal, to determine a downstream occlusion exists if a subtraction of a filtered 25 value of a sequential series of sequential trough-to-trough pressure values of a plurality of cycles from a trough-to-trough value is greater than a predetermined threshold. 0 Cl (0D ClCD (DV

    SYSTEMS AND METHODS FOR DETECTING VASCULAR ACCESS DISCONNECTION
    9.
    发明专利
    SYSTEMS AND METHODS FOR DETECTING VASCULAR ACCESS DISCONNECTION 未知

    公开(公告)号：SG11201609765VA

    公开(公告)日：2016-12-29

    申请号：SG11201609765V

    申请日：2015-05-27

    Applicant: DEKA PRODUCTS LP

    Inventor： VAN DER MERWE DIRK A ,  NORRIS MICHAEL G ,  BAKER MICHAEL A ,  BALLANTYNE TODD A ,  WILT MICHAEL J

    IPC: A61M1/36

    Abstract: A system for detecting whether a vascular access has been interrupted in an arrangement in which two catheters or needles are present in a blood vessel, fistula or graft. A fluid line leading to a pump is connected via a first connector to a first in-dwelling catheter, and a fluid line leading from a pump is connected via a second connector to a second indwelling catheter. Each connector is equipped with an electrode in contact with the lumen of the connector, the electrodes electrically connected to an electronic circuit that measures the impedance or conductivity of fluid between the first connector and second connectors via a fluid path through the blood vessel, fistula or graft. An electronic controller receives the impedance or conductivity data and processes the data to determine whether a vascular access disconnection has occurred. The processing may involve filtering the signal received by the controller, and/or setting provisional flags for a disconnection event that maybe cleared if the signal changes before the expiration of a counter.

    SISTEMAS Y MÉTODOS PARA DETECTAR UNA DESCONEXIÓN DEL ACCESO VASCULAR.
    10.
    发明专利
    SISTEMAS Y MÉTODOS PARA DETECTAR UNA DESCONEXIÓN DEL ACCESO VASCULAR. 未知

    公开(公告)号：MX378140B

    公开(公告)日：2025-03-10

    申请号：MX2016015561

    申请日：2016-11-25

    Applicant: DEKA PRODUCTS LP

    Inventor： BALLANTYNE TODD A ,  BAKER MICHAEL A ,  NORRIS MICHAEL G ,  VAN DER MERWE DIRK A ,  WILT MICHAEL J

    IPC: A61B5/0245 ,  A61M1/36 ,  A61M25/18

    Abstract: Un sistema para detectar si un acceso vascular se ha interrumpido en una disposición en la que dos catéteres o agujas están presentes en un vaso sanguíneo, fístula o injerto; una línea de fluido que conduce a una bomba está conectada por medio de un primer conector a un primer catéter residente, y una línea de fluido que conduce desde una bomba está conectada por medio de un segundo conector a un segundo catéter residente; cada conector está equipado con un electrodo en contacto con el lumen del conector, los electrodos conectados eléctricamente con un circuito electrónico que mide la impedancia o conductividad de fluido entre el primer conector y segundo conectores por medio de una trayectoria de fluido a través del vaso sanguíneo, fístula o injerto; un controlador electrónico recibe los datos de impedancia o conductividad y procesa los datos para determinar si ha ocurrido una desconexión de acceso vascular; el procesamiento puede involucrar filtrar la señal recibida por medio del controlador y/o marcas provisionales de ajustes para un evento de desconexión que se puede aclarar si la señal cambia antes de que termine un contador.

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