Patents by Inventor Donald D. Busby

Donald D. Busby has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210322656
    Abstract: A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.
    Type: Application
    Filed: June 30, 2021
    Publication date: October 21, 2021
    Inventors: Michael E. Hogard, Donald D. Busby, Robert W. Childers, Yuanpang Samuel Ding, Katherine M. Holian, Mark E. Jablonski, Thomas D. Kelly, Shincy J. Maliekkal, Rodolfo G. Roger, Donald A. Smith, Atif M. Yardimci, Ying-Cheng Lo
  • Patent number: 11052180
    Abstract: A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: July 6, 2021
    Assignees: Baxter International Inc., Baxter Healthcare SA
    Inventors: Michael E. Hogard, Donald D. Busby, Robert W. Childers, Yuanpang Samuel Ding, Katherine M. Holian, Mark E. Jablonski, Thomas D. Kelly, Shincy J. Maliekkal, Rodolfo G. Roger, Donald A. Smith, Atif M. Yardimci, Ying-Cheng Lo
  • Patent number: 9744283
    Abstract: A peritoneal dialysis system is provided that includes a hardware unit, a disposable unit received by the hardware unit, and a controller. The hardware unit includes a recessed area, a piston having a contact surface, a pneumatic source for supplying a negative pressure, and an actuator configured to move the contact surface of the piston into and out of at least a portion of the recessed area. The disposable unit includes an outer member fitted at least partially within the recessed area of the hardware unit and a moveable membrane positioned between the contact surface of the piston and the outer member when the disposable unit is received by the hardware unit. The controller is configured to cause the pneumatic source to apply the negative pressure to the moveable membrane so as to conform the moveable membrane to a shape of the contact surface of the piston and follow the contact surface when the piston is moved towards and away from the outer member fitted at least partially within the recessed area.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: August 29, 2017
    Assignee: BAXTER INTERNATIONAL INC.
    Inventors: Donald D. Busby, Peter A. Hopping, Robert W. Childers, Richard E. Kienman, Ian Richardson
  • Patent number: 9415150
    Abstract: A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: August 16, 2016
    Assignee: Baxter Healthcare S.A.
    Inventors: Michael E. Hogard, Donald D. Busby, Robert W. Childers, Yuanpang S. Ding, Katherine M. Holian, Mark E. Jablonski, Thomas D. Kelly, Ying-Cheng Lo, Shincy J. Maliekkal, Rodolfo G. Roger, Donald A. Smith, Atif M. Yardimci
  • Publication number: 20150258263
    Abstract: A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.
    Type: Application
    Filed: March 30, 2015
    Publication date: September 17, 2015
    Inventors: Michael E. Hogard, Donald D. Busby, Robert W. Childers, Yuanpang Samuel Ding, Katherine M. Holian, Mark E. Jablonski, Thomas D. Kelly, Shincy J. Maliekkal, Rodolfo G. Roger, Donald A. Smith, Atif M. Yardimci, Ying-Cheng Lo
  • Patent number: 8992463
    Abstract: A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.
    Type: Grant
    Filed: February 19, 2013
    Date of Patent: March 31, 2015
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Michael E. Hogard, Donald D. Busby, Robert W. Childers, Yuanpang Samuel Ding, Katherine M. Holian, Mark E. Jablonski, Thomas D. Kelly, Ying-Cheng Lo, Shincy J. Maliekkal, Rodolfo G. Roger, Donald A. Smith, Atif M. Yardimci
  • Patent number: 8803044
    Abstract: A dialysis fluid heating system includes a plurality of conductive tubes; first and second end caps located at first and second ends of the tubes, respectively, the first end cap including a dialysis fluid inlet and a dialysis fluid outlet, the end caps and the tubes configured such that dialysis fluid can flow from the fluid inlet of the first end cap, through at least one first tube to the second end cap, and through at least one second tube back to the first end cap; a conductive wire wound around an outside of the conductive tubes; and electronics configured to supply power to the conductive wire, the wire forming a primary coil of a transformer, the tubes forming a secondary coil of the transformer.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: August 12, 2014
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Richard E. Kienman, Dan Roush, John E. Steck, James S. Slepicka, Atif M. Yardimci, Gideon Hecht, Jennifer S. Lindsay, George F. Bobart, Donald D. Busby, William Chan, Yuanpang S. Ding, Amy L. Twining, Douglas W. Reitz, Andrey Kopychev, Mehmet B. Ozer, Brian C. Lauman
  • Patent number: 8684971
    Abstract: A peritoneal dialysis system is provided that includes a hardware unit, a disposable unit received by the hardware unit, and a controller. The hardware unit includes a recessed area, a piston having a contact surface, a pneumatic source for supplying a negative pressure, and an actuator configured to move the contact surface of the piston into and out of at least a portion of the recessed area. The disposable unit includes an outer member fitted at least partially within the recessed area of the hardware unit and a moveable membrane positioned between the contact surface of the piston and the outer member when the disposable unit is received by the hardware unit. The controller is configured to cause the pneumatic source to apply the negative pressure to the moveable membrane so as to conform the moveable membrane to a shape of the contact surface of the piston and follow the contact surface when the piston is moved towards and away from the outer member fitted at least partially within the recessed area.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 1, 2014
    Assignee: Baxter International Inc.
    Inventors: Donald D. Busby, Peter A. Hopping, Robert W. Childers, Rick E. Kienman, Ian Richardson
  • Patent number: 8221529
    Abstract: In an embodiment, a dialysis fluid cassette is disclosed. The cassette includes a plurality of walls defining at least one valve chamber, a dialysis fluid inlet, a dialysis fluid outlet and a dialysis fluid pathway. The cassette further includes a baffle extending from a first one of the walls to an opposing second one of the walls. The baffle includes an end fixed to a third one of the plurality of walls and a free end. The fixed end separates the dialysis fluid inlet from the dialysis fluid outlet and the baffle and the plurality of walls are constructed and arranged such that the flow of dialysis fluid along the pathway defined in part by the baffle slows as the flow approaches the free end of the baffle.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: July 17, 2012
    Assignees: Baxter International, Baxter Healthcare S.A.
    Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
  • Publication number: 20120065581
    Abstract: In an embodiment, a dialysis fluid cassette is disclosed. The cassette includes a plurality of walls defining at least one valve chamber, a dialysis fluid inlet, a dialysis fluid outlet and a dialysis fluid pathway. The cassette further includes a baffle extending from a first one of the walls to an opposing second one of the walls. The baffle includes an end fixed to a third one of the plurality of walls and a free end. The fixed end separates the dialysis fluid inlet from the dialysis fluid outlet and the baffle and the plurality of walls are constructed and arranged such that the flow of dialysis fluid along the pathway defined in part by the baffle slows as the flow approaches the free end of the baffle.
    Type: Application
    Filed: November 21, 2011
    Publication date: March 15, 2012
    Applicants: BAXTER HEALTHCARE S.A., BAXTER INTERNATIONAL INC.
    Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
  • Patent number: 8080091
    Abstract: A dialysis fluid system includes an instrument including a pump actuator and a fluid heater, and a dialysis fluid cassette. The dialysis fluid cassette includes a rigid portion defining a pumping section for operation with the pump actuator and a heating section for operation with the fluid heater. The heating section includes a dialysis fluid inlet, a dialysis fluid outlet, and a dialysis fluid heating area located between the fluid inlet and the fluid outlet, the heating section further includes an air separation chamber for collecting air separated from the dialysis fluid.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: December 20, 2011
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
  • Publication number: 20110144557
    Abstract: A dialysis fluid system includes an instrument including a pump actuator and a fluid heater, and a dialysis fluid cassette. The dialysis fluid cassette includes a rigid portion defining a pumping section for operation with the pump actuator and a heating section for operation with the fluid heater. The heating section includes a dialysis fluid inlet, a dialysis fluid outlet, and a dialysis fluid heating area located between the fluid inlet and the fluid outlet, the heating section further includes an air separation chamber for collecting air separated from the dialysis fluid.
    Type: Application
    Filed: February 18, 2011
    Publication date: June 16, 2011
    Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
  • Patent number: 7892331
    Abstract: A dialysis fluid cassette includes a rigid portion defining at least one valve chamber, the rigid portion further defining an air separation chamber, the air separation chamber when in an operating position including a first sidewall and a second sidewall, a first fluid opening, a second fluid opening, and a separation wall extending from the first sidewall to the second sidewall, the separation wall having a free edge residing within the air separation chamber, the separation wall forcing the dialysis fluid to flow from one of the fluid openings around the free edge of the separation wall to the other of the openings.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: February 22, 2011
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
  • Publication number: 20090124963
    Abstract: A system and method for balancing flows of renal replacement fluid is disclosed. The method uses pressure controls and pressure sensing devices to more precisely meter and balance the flow of fresh dialysate and spent dialysate. The balancing system may use one or two balancing devices, such as a balance tube, a tortuous path, or a balance chamber.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 14, 2009
    Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: Michael E. Hogard, Donald D. Busby, Robert W. Childers, Yuanpang S. Ding, Katherine M. Holian, Mark E. Jablonski, Thomas D. Kelly, Ying-Cheng Lo, Shincy J. Maliekkal, Rodolfo G. Roger, Donald A. Smith, Atif M. Yardimci
  • Publication number: 20090084719
    Abstract: A dialysis fluid cassette includes a rigid portion defining at least one valve chamber, the rigid portion further defining an air separation chamber, the air separation chamber when in an operating position including a first sidewall and a second sidewall, a first fluid opening, a second fluid opening, and a separation wall extending from the first sidewall to the second sidewall, the separation wall having a free edge residing within the air separation chamber, the separation wall forcing the dialysis fluid to flow from one of the fluid openings around the free edge of the separation wall to the other of the openings.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 2, 2009
    Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: Robert W. Childers, Donald D. Busby, Michael E. Hogard, Michael R. Prisco, Atif M. Yardimci, James C. Laird
  • Patent number: 5635690
    Abstract: An electrical switch and connector interlock mechanism permits ready reception and removal of a connector portion on a power cable from a connector portion attached to the unit and prevents current flow when the two connector portions are unseated or when a line connector is not received within the unit.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: June 3, 1997
    Assignee: Thomas & Betts Corporation
    Inventors: George W. Knecht, Donald D. Busby