1
Clement D Bouchard, Robert J Bryant, Lawrence B Gray, Geoff P Spencer: Pumping cartridge including a bypass valve and method for directing flow in a pumping cartridge. Deka Products Partnership, Wolf Greenfield & Sacks P C, July 9, 2002: US06416293 (303 worldwide citation)

Pumping cartridges are disclosed for use in pumping systems. One such cartridge includes a series of fluid flow paths therein and a bypass valve therein, the bypass valve can selectively block fluid flow along one or both of two fluid flow paths through the valve. In some embodiments, the pumping ca ...


2
Robert J Bryant, Dean Kamen, Douglas E Vincent: Peritoneal dialysis systems and methods employing pneumatic pressure and temperature-corrected liquid volume measurements. Deka Products Partnership, Thomas S Borecki, Charles R Mattenson, Richard P Beem, December 12, 1995: US05474683 (256 worldwide citation)

Peritoneal dialysis systems and methods move liquid using a pump chamber that is operated in response to pneumatic pressure variations applied by a pump actuator. The systems and methods periodically measure air pressures in the actuator and an associated reference air chamber and derive from these ...


3
Robert J Bryant, Clement D Bouchard, Dean Kamen, Richard Lanigan, Bradley D Miller, Geoffrey P Spencer, Douglas E Vincent: Liquid pumping mechanisms for peritoneal dialysis systems employing fluid pressure. Deka Products Partnership, Thomas S Borecki, Charles R Mattenson, Daniel D Ryan, July 11, 1995: US05431626 (253 worldwide citation)

Pumping mechanisms for performing peritoneal dialysis and the like employ a pumping mechanism comprising a diaphragm that operate in response to applied fluid pressure. Flexible tubing is attached to the pumping mechanism for carrying liquid to and from the patient's peritoneal cavity. An actuating ...


4
Robert J Bryant, Jeffrey Finkelstein, Dean Kamen, Richard Lanigan, Bradley D Miller, Geoffrey P Spencer: User interface and monitoring functions for automated peritoneal dialysis systems. Deka Products Partnership, Thomas S Borecki, Charles R Mattenson, Daniel D Ryan, August 1, 1995: US05438510 (247 worldwide citation)

Systems for performing peritoneal dialysis having an improved user interface functions and monitoring capabilities. In one respect, the systems discriminate between alarm conditions that require user intervention to correct and alarm conditions that reflect conditions that are anomalies but typicall ...


5
Robert J Bryant, Clement D Bouchard, Dean Kamen, Richard Lanigan, Bradley D Miller, Geoffrey P Spencer, Douglas E Vincent: Liquid pumping mechanisms for peritoneal dialysis systems employing fluid pressure. Deka Products Partnership, Thomas S Borecki, Charles R Mattenson, Richard P Beem, June 3, 1997: US05634896 (235 worldwide citation)

Pumping mechanisms for performing peritoneal dialysis and the like employ a pumping mechanism comprising a diaphragm that operate in response to applied fluid pressure. Flexible tubing is attached to the pumping mechanism for carrying liquid to and from the patient's peritoneal cavity. An actuating ...


6
Robert J Bryant, Lawrence B Gray, Geoff P Spencer: Methods and systems for detecting the presence of a gas in a pump and preventing a gas from being pumped from a pump. DEKA Products Partnership, Wolf Greenfield & Sacks P C, October 16, 2001: US06302653 (202 worldwide citation)

A method and system are disclosed for detecting the presence of a gas in a pump chamber of a pumping system. The methods, and systems employing the methods, involve isolating a pump chamber from its surroundings, for example by closing an inlet and outlet valve on lines to and from the chamber, and ...


7
Robert J Bryant, Lawrence B Gray, Geoff P Spencer: Methods and systems for pulsed delivery of fluids from a pump. DEKA Products Partnership, Wolf Greenfield & Sacks P C, August 12, 2003: US06604908 (163 worldwide citation)

A system is disclosed for pumping fluids at desired average flow rates by applying a predetermined force to a pump chamber and pulsing an outlet valve of the pump chamber to deliver a fluid therefrom. In some embodiments, pump chambers are provided within removable pumping cartridges that are constr ...


8
Robert J Bryant, Lawrence B Gray, Geoff P Spencer: Methods for controlling a pump's flow rate by pulsed discharge. Deka Products Partnership, Wolf Greenfield & Sacks P C, June 15, 2004: US06749403 (150 worldwide citation)

Methods and systems are disclosed for pumping fluids at desired average flow rates by applying a predetermined force to a pump chamber and pulsing an outlet valve of the pump chamber to deliver a fluid therefrom. In some embodiments, pump chambers are provided within removable pumping cartridges tha ...


9
Robert J Bryant, Larry B Gray, Geoff P Spencer: Systems for determining the volume of a volumetric chamber and pumping a fluid with a pump chamber. DEKA Products Partnership, Wolf Greenfield & Sacks P C, November 26, 2002: US06485263 (124 worldwide citation)

Reusable pump drive systems are disclosed that utilize pressurized fluids for creating a force on a flexible or moveable surface of a pump chamber of a pumping cartridge. One such system includes a variable sized orifice valve included as part of a fluid supply system, which valve is able to selecti ...


10
Jacob W Scarpaci, Robert J Bryant Jr, Geoffrey P Spencer, David J Hibbard, James D Dale, John M Kerwin, Andrew S Coll, David A Beavers, David W McGill, Simon C Helmore: Medical treatment system and methods using a plurality of fluid lines. DEKA Products Partnership, Wolf Greenfield & Sacks P C, July 14, 2015: US09078971 (9 worldwide citation)

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 ...