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    MEDICAL TREATMENT SYSTEM AND METHODS USING A PLURALITY OF FLUID LINES
    1.
    发明公开
    MEDICAL TREATMENT SYSTEM AND METHODS USING A PLURALITY OF FLUID LINES 审中-公开

    公开(公告)号：US20230390472A1

    公开(公告)日：2023-12-07

    申请号：US18366603

    申请日：2023-08-07

    申请人： DEKA Products Limited Partnership

    发明人： David A. Beavers ,  Michael G. Norris ,  John M. Kerwin ,  Andrew S. Coll ,  Paul G. Girouard ,  Robert J. Bryant, JR. ,  Geoffrey P. Spencer ,  Joseph P. Rushlow ,  Jacob W. Scarpaci

    IPC分类号： A61M1/28 ,  A61M1/00 ,  A61M1/14

    CPC分类号： A61M1/282 ,  A61M1/71 ,  A61M1/80 ,  A61M1/1524 ,  A61M1/1522 ,  A61M1/159 ,  A61M1/156 ,  A61M1/1565 ,  A61M1/155 ,  G01V8/20

    摘要： 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 being modeled using a combination of adiabatic, isothermal and polytropic processes. Real time or instantaneous fluid flow measurements in a pump chamber of the 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 element. Improvements are also disclosed in an application of negative pressure during a drain phase in peritoneal dialysis therapy, and to control an amount of intraperitoneal fluid accumulation during the therapy. Improvements in efficiency are also disclosed in movement of fluid into and out of a two-pump cassette and a heater bag of the peritoneal dialysis cycler, and in synchronization of operation of two or more pumps in the peritoneal dialysis cycler or other fluid handling devices using a multi-pump arrangement.

    MEDICAL TREATMENT SYSTEM AND METHODS USING A PLURALITY OF FLUID LINES
    6.
    发明申请
    MEDICAL TREATMENT SYSTEM AND METHODS USING A PLURALITY OF FLUID LINES 审中-公开

    公开(公告)号：US20190167883A1

    公开(公告)日：2019-06-06

    申请号：US16266804

    申请日：2019-02-04

    申请人： DEKA Products Limited Partnership

    发明人： Paul G. Girouard ,  Andrew S. Coll ,  Jacob W. Scarpaci

    IPC分类号： A61M1/28 ,  A61M1/16

    摘要： A medical treatment system, such as peritoneal dialysis system, may include control and other features to enhance patient comfort and ease of use. For example, a peritoneal dialysis system may include a control system that can adjust the volume of fluid infused into the peritoneal cavity to prevent the intraperitoneal fluid volume from exceeding a pre-determined amount. The control system can adjust by adding one or more therapy cycles, allowing for fill volumes during each cycle to be reduced. The control system may continue to allow the fluid to drain from the peritoneal cavity as completely as possible before starting the next therapy cycle. The control system may also adjust the dwell time of fluid within the peritoneal cavity during therapy cycles in order to complete a therapy within a scheduled time period. The cycler may also be configured to have a heater control system that monitors both the temperature of a heating tray and the temperature of a bag of dialysis fluid in order to bring the temperature of the dialysis fluid rapidly to a specified temperature, with minimal temperature overshoot.

    Medical treatment system and methods using a plurality of fluid lines
    7.
    发明授权
    Medical treatment system and methods using a plurality of fluid lines 有权

    公开(公告)号：US10195330B2

    公开(公告)日：2019-02-05

    申请号：US14798401

    申请日：2015-07-13

    申请人： DEKA Products Limited Partnership

    发明人： Andrew S. Coll ,  John M. Kerwin ,  Jacob W. Scarpaci

    IPC分类号： A61N1/30 ,  A61M1/28 ,  A61M1/16

    摘要： A medical treatment system, such as peritoneal dialysis system, may include control and other features to enhance patient comfort and ease of use. For example, a peritoneal dialysis system may include a control system that can adjust the volume of fluid infused into the peritoneal cavity to prevent the intraperitoneal fluid volume from exceeding a pre-determined amount. The control system can adjust by adding one or more therapy cycles, allowing for fill volumes during each cycle to be reduced. The control system may continue to allow the fluid to drain from the peritoneal cavity as completely as possible before starting the next therapy cycle. The control system may also adjust the dwell time of fluid within the peritoneal cavity during therapy cycles in order to complete a therapy within a scheduled time period. The cycler may also be configured to have a heater control system that monitors both the temperature of a heating tray and the temperature of a bag of dialysis fluid in order to bring the temperature of the dialysis fluid rapidly to a specified temperature, with minimal temperature overshoot.