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).
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Patent number: 8803044Abstract: 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: GrantFiled: July 5, 2007Date of Patent: August 12, 2014Assignees: 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
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Patent number: 7809254Abstract: 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: GrantFiled: July 5, 2007Date of Patent: October 5, 2010Assignees: Baxter International Inc., Baxter Healthcare S.A.Inventors: Jennifer Lindsay, Richard Kienman, Douglas W. Reitz, Dan Roush
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Patent number: 7534348Abstract: 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: GrantFiled: September 12, 2003Date of Patent: May 19, 2009Assignee: 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
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Publication number: 20090010627Abstract: 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: ApplicationFiled: July 5, 2007Publication date: January 8, 2009Applicants: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.Inventors: Jennifer Lindsay, Richard Kienman, Douglas W. Reitz, Dan Roush
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Publication number: 20030211927Abstract: 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: ApplicationFiled: June 16, 2003Publication date: November 13, 2003Applicant: Baxter International Inc.Inventors: Robert J. Cantu, Kyungyoon Min, Douglas W. Reitz, Richard I. Brown
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Patent number: 6582349Abstract: 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: GrantFiled: September 26, 2000Date of Patent: June 24, 2003Assignee: Baxter International Inc.Inventors: Robert J Cantu, Kyungyoon Min, Douglas W Reitz, Robert I Brown
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Patent number: 6168561Abstract: 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: GrantFiled: August 19, 1999Date of Patent: January 2, 2001Assignee: Baxter International Inc.Inventors: Robert J Cantu, Kyungyoon Min, Douglas W Reitz
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Patent number: 6027441Abstract: 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: GrantFiled: July 1, 1997Date of Patent: February 22, 2000Assignee: Baxter International Inc.Inventors: Robert J Cantu, Kyungyoon Min, Douglas W Reitz
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Patent number: 5304130Abstract: 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: GrantFiled: February 26, 1992Date of Patent: April 19, 1994Assignee: 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