Patents by Inventor Douglas W Reitz

Douglas W Reitz 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).

  • 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: 7809254
    Abstract: A dialysis fluid heating system includes a dialysis fluid heater; a heating portion of a dialysis fluid carrying set, the heating portion configured to be placed in contact with a surface of the dialysis fluid heater to heat a dialysis fluid; a pneumatic source connected to the dialysis fluid heater; and a logic implementer configured to cause the pneumatic source to apply a negative pressure between the heating portion and the surface of the dialysis fluid heater.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: October 5, 2010
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Jennifer Lindsay, Richard Kienman, Douglas W. Reitz, Dan Roush
  • Patent number: 7534348
    Abstract: Flow-through systems for processing biological fluid are disclosed. The flow-through systems include a removal device in the flow path for removing unwanted compounds and agents. The removal device includes a removal media contained within a housing made of two separate portions sealed together. The housing is maintained in a substantially vertical disposition, thereby ensuring substantially uniform and complete exposure of the fluid to the media.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: May 19, 2009
    Assignee: Fenwal, Inc.
    Inventors: Douglas W. Reitz, Scott Ariagno, Mihir Sheth, Atif Yardimci, Robert A. Clarke, David W. Pennington, Michael R. Prisco, Edwin Chim, Robin Pauley, Craig Sandford, Arch Sites
  • Publication number: 20090010627
    Abstract: A dialysis fluid heating system includes a dialysis fluid heater; a heating portion of a dialysis fluid carrying set, the heating portion configured to be placed in contact with a surface of the dialysis fluid heater to heat a dialysis fluid; a pneumatic source connected to the dialysis fluid heater; and a logic implementer configured to cause the pneumatic source to apply a negative pressure between the heating portion and the surface of the dialysis fluid heater.
    Type: Application
    Filed: July 5, 2007
    Publication date: January 8, 2009
    Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: Jennifer Lindsay, Richard Kienman, Douglas W. Reitz, Dan Roush
  • Publication number: 20030211927
    Abstract: Blood processing systems and methods rotate a processing chamber on a rotating element. The processing chamber includes a first compartment and a second compartment. Blood is conveyed into the first compartment for centrifugal separation into components. A liquid free of blood occupies the second compartment to counter-balance the first compartment during rotation on the rotating element. In one embodiment, the second compartment is served by a single fluid flow access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment. While the vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment through the single access, thereby priming the second compartment for use.
    Type: Application
    Filed: June 16, 2003
    Publication date: November 13, 2003
    Applicant: Baxter International Inc.
    Inventors: Robert J. Cantu, Kyungyoon Min, Douglas W. Reitz, Richard I. Brown
  • Patent number: 6582349
    Abstract: Blood processing systems and methods rotate a processing chamber on a rotating element. The processing chamber includes a first compartment and a second compartment. Blood is conveyed into the first compartment for centrifugal separation into components. A liquid free of blood occupies the second compartment to counter-balance the first compartment during rotation on the rotating element. In one embodiment, the second compartment is served by a single fluid flow access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment. While the vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment through the single access, thereby priming the second compartment for use.
    Type: Grant
    Filed: September 26, 2000
    Date of Patent: June 24, 2003
    Assignee: Baxter International Inc.
    Inventors: Robert J Cantu, Kyungyoon Min, Douglas W Reitz, Robert I Brown
  • Patent number: 6168561
    Abstract: Blood processing systems and methods rotate a processing chamber on a rotating element. The processing chamber includes a first compartment and a second compartment. Blood is conveyed into the first compartment for centrifugal separation into components. A liquid free of blood occupies the second compartment to counter-balance the first compartment during rotation on the rotating element. In one embodiment, the second compartment is served by a single fluid flow access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment. While the vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment through the single access, thereby priming the second compartment for use.
    Type: Grant
    Filed: August 19, 1999
    Date of Patent: January 2, 2001
    Assignee: Baxter International Inc.
    Inventors: Robert J Cantu, Kyungyoon Min, Douglas W Reitz
  • Patent number: 6027441
    Abstract: Blood processing systems and methods rotate a processing chamber on a rotating element. The processing chamber includes a first compartment and a second compartment. Blood is conveyed into the first compartment for centrifugal separation into components. A liquid free of blood occupies the second compartment to counter-balance the first compartment during rotation on the rotating element. In one embodiment, the second compartment is served by a single fluid flow access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment. While the vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment through the single access, thereby priming the second compartment for use.
    Type: Grant
    Filed: July 1, 1997
    Date of Patent: February 22, 2000
    Assignee: Baxter International Inc.
    Inventors: Robert J Cantu, Kyungyoon Min, Douglas W Reitz
  • Patent number: 5304130
    Abstract: A container for housing a beneficial agent that can be removably coupled to a structure defining a fluid flow path. The container comprises a body defining a first and second interior area separated by a wall that terminates at an opening providing fluid communication between the first and second interior area. A cannula is provided that extends from the body for being removably received by the structure defining the fluid path. The cannula includes an inlet opening and inlet fluid flow path and an outlet opening and outlet fluid flow path. The inlet fluid flow path being in fluid communication with the first interior area, and the outlet fluid flow path being in fluid communication with the second interior area. The second interior area houses the solid beneficial agent and allows fluid that flows through the inlet fluid flow path to pass by at least a portion of the beneficial agent.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: April 19, 1994
    Assignee: Baxter International Inc.
    Inventors: Kathryn M. Button, Steven C. Jepson, Birendra K. Lal, Douglas W. Reitz, James Richardson, Richard A. Rollins, Paul J. Soltys, Thomas E. Dudar