Patents by Inventor Tuan Bui

Tuan Bui 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: 10006454
    Abstract: An infusion pump is provided, including a specially programmed microprocessor, a flow sensor for measuring flow from a source of fluid through an output tubing, a pumping section including a plurality of fingers in operational relationship to the output tubing, an outlet valve associated with the output tubing, and a first actuator configured for sequentially displacing the plurality of fingers to displace fluid through the output tubing. An inlet valve is disposed between the pumping section and the source of fluid; and a second actuator is also included. For detection, by the flow sensor, of flow above a predetermined level, the microprocessor is configured for one of: closing the outlet valve independently of the inlet valve using the first actuator; and closing the inlet valve independently of the outlet valve using the second actuator.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: June 26, 2018
    Assignees: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: Roger L. Hungerford, Tuan Bui
  • Publication number: 20180015220
    Abstract: A drip chamber for an infusion tube, including: a first end including a drip tube; a second end including an exit port; and a wall connecting the first and second ends and including an interior surface with a hydrophobic portion. The drip chamber includes a space enclosed by the interior wall and the first and second ends. The hydrophobic portion of the interior surface repels liquid contacting the hydrophobic coating. The hydrophobic portion of the interior surface enables light to refract through the hydrophobic portion and the wall in the same manner as is the case when the hydrophobic portion is not present on the interior surface.
    Type: Application
    Filed: September 26, 2017
    Publication date: January 18, 2018
    Inventors: James F. MUNRO, Tuan BUI
  • Patent number: 9801996
    Abstract: A drip chamber for an infusion tube, including: a first end including a drip tube; a second end including an exit port; and a wall connecting the first and second ends and including an interior surface with a hydrophobic portion. The drip chamber includes a space enclosed by the interior wall and the first and second ends. The hydrophobic portion of the interior surface repels liquid contacting the hydrophobic coating. The hydrophobic portion of the interior surface enables light to refract through the hydrophobic portion and the wall in the same manner as is the case when the hydrophobic portion is not present on the interior surface.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 31, 2017
    Assignees: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: James F. Munro, Tuan Bui
  • Publication number: 20170274141
    Abstract: A controller for a programmable medical pump is configured to select a drug library file that corresponds to a received medication name and determine a number of times status information is received within a designated time period from a current time during an infusion therapy. The example controller is also configured to determine if the number of times the status information is received comports with an accumulated medication dosage limit using a dose per administration program parameter. Responsive to the number of times the status information is received matching or exceeding the accumulated medication dosage limit, the controller is configured to prevent another administration of the medication until enough time has passed such that the number of times the status information has been received within the designated time period from the current time is less than the accumulated medication dosage limit.
    Type: Application
    Filed: June 12, 2017
    Publication date: September 28, 2017
    Inventors: Janice Stewart, Randolph Meinzer, Debra K. Bello, Janet Mullan, James D. Jacobson, Tuan Bui, Qui Chau
  • Publication number: 20170189612
    Abstract: A method of operating an infusion pump includes transmitting light through or around a drop of fluid suspended from an end of a drip tube for the infusion pump, the end of the drip tube located in a drip chamber for the infusion pump, wherein the drip tube is configured for connection to a source of the fluid; receiving, using an optical system for the pump, light transmitted through or around the drop; transmitting, to a specially programmed microprocessor and using the optical system, data regarding the received light; and, using the microprocessor to calculate a volume of the drop using the data.
    Type: Application
    Filed: March 17, 2017
    Publication date: July 6, 2017
    Inventors: Roger L. Hungerford, Tuan Bui
  • Publication number: 20170189613
    Abstract: A method of operating an infusion pump includes transmitting light through or around a drop of fluid suspended from an end of a drip tube for the infusion pump, the end of the drip tube located in a drip chamber for the infusion pump, wherein the drip tube is configured for connection to a source of the fluid; receiving, using an optical system for the pump, light transmitted through or around the drop; transmitting, to a specially programmed microprocessor and using the optical system, data regarding the received light; and, using the microprocessor to calculate a volume of the drop using the data.
    Type: Application
    Filed: March 17, 2017
    Publication date: July 6, 2017
    Inventors: Roger L. Hungerford, Tuan Bui
  • Patent number: 9690909
    Abstract: A controller for a programmable medical pump comprises a memory including a plurality of preloaded infusion therapies, each preloaded infusion therapy including a plurality of program parameters. The controller also includes a device receiving a selection of one of the preloaded infusion therapies, profile data corresponding to a specific patient, and values for the program parameters. The controller further includes a processor configured to determine which of the plurality of program parameters to associate with the selected preloaded infusion therapy, determine limits for the associated program parameters based upon the selected preloaded infusion therapy and the profile data, determine if the received values of program parameters exceed the determined limits, and responsive to determining that the values of the program parameters are within the determined limits, cause the selected preloaded infusion therapy to be administered via the medical pump using the received values for the program parameters.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: June 27, 2017
    Assignee: Baxter International Inc.
    Inventors: Janice Stewart, Randolph Meinzer, Debra K. Bello, Janet Mullan, James D. Jacobson, Tuan Bui, Qui Chau
  • Patent number: 9603999
    Abstract: A method of operating an infusion pump includes transmitting light through or around a drop of fluid suspended from an end of a drip tube for the infusion pump, the end of the drip tube located in a drip chamber for the infusion pump, wherein the drip tube is configured for connection to a source of the fluid; receiving, using an optical system for the pump, light transmitted through or around the drop; transmitting, to a specially programmed microprocessor and using the optical system, data regarding the received light; and, using the microprocessor to calculate a volume of the drop using the data.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: March 28, 2017
    Assignees: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: Roger L. Hungerford, Tuan Bui
  • Patent number: 9574060
    Abstract: A method for immobilizing dyes and antimicrobial agents on a polymeric cover or housing for a medical device is disclosed and described. The surface may be that of a catheter, a connector, a drug vial spike, a bag spike, a prosthetic device, an endoscope, a surface of an infusion pump, a key pad, a touch screen or a handle. The surfaces may also be one or more of those associated with a infusion of a medicament or dialysis treatment, such as peritoneal dialysis or hemodialysis, where it is important that the working surface for the dialysis fluid be sterile. These surfaces include connectors for peritoneal dialysis sets or for hemodialysis sets, bag spikes, dialysis catheters, and so forth. A method for determining whether a surface has been sterilized, and a dye useful in so indicating, is also disclosed.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: February 21, 2017
    Assignees: Baxter International Inc., Baxter Healthcare SA
    Inventors: Tuan Bui, Ton That Hai, Mark Nordhaus, Paul Sanders, Cong Jiang, David Lamb, Ozlem Yardimci, Kent L. Lurvey, Vadim V. Krongauz
  • Publication number: 20160250412
    Abstract: A drip chamber for an infusion tube, including: a first end including a drip tube; a second end including an exit port; and a wall connecting the first and second ends and including an interior surface with a hydrophobic portion. The drip chamber includes a space enclosed by the interior wall and the first and second ends. The hydrophobic portion of the interior surface repels liquid contacting the hydrophobic coating. The hydrophobic portion of the interior surface enables light to refract through the hydrophobic portion and the wall in the same manner as is the case when the hydrophobic portion is not present on the interior surface.
    Type: Application
    Filed: May 13, 2016
    Publication date: September 1, 2016
    Inventors: James F. Munro, Tuan Bui
  • Patent number: 9352081
    Abstract: A drip chamber for an infusion tube, including: a first end including a drip tube; a second end including an exit port; and a wall connecting the first and second ends and including an interior surface with a hydrophobic portion. The drip chamber includes a space enclosed by the interior wall and the first and second ends. The hydrophobic portion of the interior surface repels liquid contacting the hydrophobic coating. The hydrophobic portion of the interior surface enables light to refract through the hydrophobic portion and the wall in the same manner as is the case when the hydrophobic portion is not present on the interior surface.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 31, 2016
    Assignees: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE S.A.
    Inventors: James F. Munro, Tuan Bui
  • Publication number: 20160025641
    Abstract: A drip chamber for an infusion tube that includes a first end arranged to receive a drip tube, a second end including an exit port, at least one wall connecting the first and second ends, a space enclosed by the first and second ends and the at least one wall, and first and second lenses each directly fixed to said at least one wall.
    Type: Application
    Filed: October 1, 2015
    Publication date: January 28, 2016
    Inventors: Peter Hammond, James F. Munro, Luke Postema, Tuan Bui
  • Patent number: 9234850
    Abstract: A drip chamber for an infusion tube, including: a first end arranged to receive a drip tube; a second end including an exit port; at least one wall connecting the first and second ends; a space enclosed by the first and second ends and the at least one wall; and at least one lens integral to the at least one wall or directly fixed to the at least one wall.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 12, 2016
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Peter Hammond, James F. Munro, Luke Postema, Tuan Bui
  • Publication number: 20150361974
    Abstract: An infusion pump is provided, including a specially programmed microprocessor, a flow sensor for measuring flow from a source of fluid through an output tubing, a pumping section including a plurality of fingers in operational relationship to the output tubing, an outlet valve associated with the output tubing, and a first actuator configured for sequentially displacing the plurality of fingers to displace fluid through the output tubing. An inlet valve is disposed between the pumping section and the source of fluid; and a second actuator is also included. For detection, by the flow sensor, of flow above a predetermined level, the microprocessor is configured for one of: closing the outlet valve independently of the inlet valve using the first actuator; and closing the inlet valve independently of the outlet valve using the second actuator.
    Type: Application
    Filed: August 27, 2015
    Publication date: December 17, 2015
    Inventors: Roger L. HUNGERFORD, Tuan BUI
  • Publication number: 20150322229
    Abstract: A method for immobilizing dyes and antimicrobial agents on a polymeric cover or housing for a medical device is disclosed and described. The surface may be that of a catheter, a connector, a drug vial spike, a bag spike, a prosthetic device, an endoscope, a surface of an infusion pump, a key pad, a touch screen or a handle. The surfaces may also be one or more of those associated with a infusion of a medicament or dialysis treatment, such as peritoneal dialysis or hemodialysis, where it is important that the working surface for the dialysis fluid be sterile. These surfaces include connectors for peritoneal dialysis sets or for hemodialysis sets, bag spikes, dialysis catheters, and so forth. A method for determining whether a surface has been sterilized, and a dye useful in so indicating, is also disclosed.
    Type: Application
    Filed: July 17, 2015
    Publication date: November 12, 2015
    Inventors: Tuan Bui, Ton That Hai, Mark Nordhaus, Paul Sanders, Cong Jiang, David Lamb, Ozlem Yardimci
  • Patent number: 9144644
    Abstract: An infusion pump, including: a specially programmed microprocessor; a drip chamber for connection to a source of fluid and to an output tubing; a pumping section including a plurality of fingers and a first actuator, controllable using the microprocessor, for sequentially displacing the plurality of finger to compress a first portion of the output tubing to displace fluid from the drip chamber through the output tubing; an inlet valve disposed between the drip chamber and the pumping section and arranged to compress the output tubing to restrict or block flow through the output tubing; and a second actuator, controllable using the microprocessor, for opening or closing the inlet valve independent of the displacement of the plurality of fingers; or for operating the inlet valve to control a rate of flow of fluid from the drip chamber to the portion of the output tubing.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: September 29, 2015
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Roger L. Hungerford, Tuan Bui
  • Patent number: 9128051
    Abstract: An optical imaging system for use with an infusion tube having a drip chamber and an output tube. The drip chamber includes a first portion with a drip tube, a second portion with an exit port, and a third portion between the first and second portions. The optical imaging system includes: an illumination system with at least one light source for emitting light, an optical system, and a memory element storing computer executable instructions. The optical system receives the light transmitted by the output tube or the second portion and transmits data characterizing the received light. The system includes at least one processor configured to execute the computer executable instructions to: detect, using the data, an air bubble in the output tube or the second portion; and determine a volume of the detected air bubble.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: September 8, 2015
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Tuan Bui, James F. Munro
  • Patent number: 9125973
    Abstract: A method for immobilizing dyes and antimicrobial agents on a polymeric cover or housing for a medical device is disclosed and described. The surface may be that of a catheter, a connector, a drug vial spike, a bag spike, a prosthetic device, an endoscope, a surface of an infusion pump, a key pad, a touch screen or a handle. The surfaces may also be one or more of those associated with a infusion of a medicament or dialysis treatment, such as peritoneal dialysis or hemodialysis, where it is important that the working surface for the dialysis fluid be sterile. These surfaces include connectors for peritoneal dialysis sets or for hemodialysis sets, bag spikes, dialysis catheters, and so forth. A method for determining whether a surface has been sterilized, and a dye useful in so indicating, is also disclosed.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: September 8, 2015
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Tuan Bui, Ton That Hai, Mark Nordhaus, Paul Sanders, Cong Jiang, David Lamb, Ozlem Yardimci
  • Publication number: 20140276457
    Abstract: A drip chamber for an infusion tube, including: a first end including a drip tube; a second end including an exit port; and a wall connecting the first and second ends and including an interior surface with a hydrophobic portion. The drip chamber includes a space enclosed by the interior wall and the first and second ends. The hydrophobic portion of the interior surface repels liquid contacting the hydrophobic coating. The hydrophobic portion of the interior surface enables light to refract through the hydrophobic portion and the wall in the same manner as is the case when the hydrophobic portion is not present on the interior surface.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Inventors: James F. Munro, Tuan Bui
  • Publication number: 20140081233
    Abstract: A method of operating an infusion pump includes transmitting light through or around a drop of fluid suspended from an end of a drip tube for the infusion pump, the end of the drip tube located in a drip chamber for the infusion pump, wherein the drip tube is configured for connection to a source of the fluid; receiving, using an optical system for the pump, light transmitted through or around the drop; transmitting, to a specially programmed microprocessor and using the optical system, data regarding the received light; and, using the microprocessor to calculate a volume of the drop using the data.
    Type: Application
    Filed: November 21, 2013
    Publication date: March 20, 2014
    Applicants: BAXTER HEALTHCARE S.A., BAXTER INTERNATIONAL INC.
    Inventors: Roger L. Hungerford, Tuan Bui