Patents by Inventor Sukanya Varadharajan

Sukanya Varadharajan 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: 20210290288
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a method of beginning an ablation procedure using a multi-electrode ablation system is described. The method includes selectively coupling the output of a power supply to a first electrode of a plurality of electrodes to increase a temperature at the first electrode to a first temperature set-point and limit a rate of increase of the temperature at the first electrode to a predetermined first rate.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 23, 2021
    Inventors: John B. Blix, James C. Baker, Kevin K. Ennett, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Raymond Vincent Froehlich, Michael Olsen, Sukanya Varadharajan, Catherine A. Pipenhagen
  • Patent number: 11058474
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a method of beginning an ablation procedure using a multi-electrode ablation system is described. The method includes selectively coupling the output of a power supply to a first electrode of a plurality of electrodes to increase a temperature at the first electrode to a first temperature set-point and limit a rate of increase of the temperature at the first electrode to a predetermined first rate.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: July 13, 2021
    Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: John B. Blix, James C. Baker, Kevin K. Ennett, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Raymond Vincent Froehlich, Michael Olsen, Sukanya Varadharajan, Catherine A. Pipenhagen
  • Patent number: 10918434
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a multi-electrode ablation system includes a power supply configured to be coupled to a plurality of electrodes and a controller coupled to the power supply. The controller is configured to determine a thermal gain of each electrode of the plurality of electrodes. For each electrode of the plurality of electrodes, the controller sets a power limit based at least in part on said electrode's determined thermal gain. The power limit establishes a maximum power that may be dissipated through said electrode.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: February 16, 2021
    Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: John B. Blix, James C. Baker, Kevin K. Ennett, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Raymond Victor Froehlich, Michael Olsen, Sukanya Varadharajan
  • Publication number: 20180250059
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a multi-electrode ablation system includes a power supply configured to be coupled to a plurality of electrodes and a controller coupled to the power supply. The controller is configured to determine a thermal gain of each electrode of the plurality of electrodes. For each electrode of the plurality of electrodes, the controller sets a power limit based at least in part on said electrode's determined thermal gain. The power limit establishes a maximum power that may be dissipated through said electrode.
    Type: Application
    Filed: May 3, 2018
    Publication date: September 6, 2018
    Inventors: John B. Blix, James C. Baker, Kevin K. Ennett, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Raymond Victor Froehlich, Michael Olsen, Sukanya Varadharajan
  • Patent number: 9987070
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a multi-electrode ablation system includes a power supply configured to be coupled to a plurality of electrodes and a controller coupled to the power supply. The controller is configured to determine a thermal gain of each electrode of the plurality of electrodes. For each electrode of the plurality of electrodes, the controller sets a power limit based at least in part on said electrode's determined thermal gain. The power limit establishes a maximum power that may be dissipated through said electrode.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: June 5, 2018
    Assignee: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: John B. Blix, James C. Baker, Kevin K. Ennett, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Raymond Victor Froehlich, Michael Olsen, Sukanya Varadharajan
  • Publication number: 20170354454
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a method of beginning an ablation procedure using a multi-electrode ablation system is described. The method includes selectively coupling the output of a power supply to a first electrode of a plurality of electrodes to increase a temperature at the first electrode to a first temperature set-point and limit a rate of increase of the temperature at the first electrode to a predetermined first rate.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    Inventors: John B. Blix, James C. Baker, Kevin K. Ennett, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Raymond Vincent Froehlich, Michael Olsen, Sukanya Varadharajan, Catherine A. Pipenhagen
  • Patent number: 9775663
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a method of beginning an ablation procedure using a multi-electrode ablation system is described. The method includes selectively coupling the output of a power supply to a first electrode of a plurality of electrodes to increase a temperature at the first electrode to a first temperature set-point and limit a rate of increase of the temperature at the first electrode to a predetermined first rate.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: October 3, 2017
    Assignee: St. Jude Medical, Cardiology Division, Inc.
    Inventors: John B. Blix, James C. Baker, Kevin K. Ennett, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Raymond Vincent Froehlich, Michael Olsen, Sukanya Varadharajan, Catherine A. Pipenhagen
  • Patent number: 9179997
    Abstract: A method of creating a thermochromic artificial blood vessel includes physically cross-linking a polyvinyl alcohol solution in a mold shaped to mimic a blood vessel to create an artificial blood vessel. The artificial tissue is then chemically cross-linked with a solution including a chemical cross-linking reagent. A coagulation solution is then applied to the artificial blood vessel to both inhibit the chemical cross-linking and promote physical cross-linking of the artificial blood vessel. The artificial blood vessel can be used to test an ablation catheter. The vessel, when heated by the ablation catheter, changes color and/or transparency at locations where the temperature of artificial blood vessel increases.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: November 10, 2015
    Assignee: St. Jude Medical, Cardiology Division, Inc.
    Inventors: Eunhee Cho, Valentine Kozov, Sukanya Varadharajan, Steven N. Willard
  • Publication number: 20140330266
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a power supply is configured to be coupled to a plurality of electrodes. A controller includes a touchscreen display configured to display at least a graphical representation of each electrode of the ablation system. The controller is configured to receive an interactive input for each respective electrode to select and deselect the electrode for activation, during which power may be supplied thereto, by touching the graphical representation of the respective electrode on the touchscreen display. This may occur during a diagnostic mode and/or an ablation procedure run mode of the system.
    Type: Application
    Filed: April 22, 2014
    Publication date: November 6, 2014
    Inventors: Sara A. Thompson, John B. Blix, Sukanya Varadharajan, Mark Allen Catron
  • Publication number: 20140316400
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a method of beginning an ablation procedure using a multi-electrode ablation system is described. The method includes selectively coupling the output of a power supply to a first electrode of a plurality of electrodes to increase a temperature at the first electrode to a first temperature set-point and limit a rate of increase of the temperature at the first electrode to a predetermined first rate.
    Type: Application
    Filed: March 11, 2014
    Publication date: October 23, 2014
    Inventors: John B. Blix, James C. Baker, Kevin K. Ennett, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Raymond Vincent Froehlich, Michael Olsen, Sukanya Varadharajan, Catherine A. Pipenhagen
  • Publication number: 20140276765
    Abstract: Multi-electrode ablation systems, methods, and controllers are described. In one example, a multi-electrode ablation system includes a power supply configured to be coupled to a plurality of electrodes and a controller coupled to the power supply. The controller is configured to determine a thermal gain of each electrode of the plurality of electrodes. For each electrode of the plurality of electrodes, the controller sets a power limit based at least in part on said electrode's determined thermal gain. The power limit establishes a maximum power that may be dissipated through said electrode.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Inventors: John B. Blix, James C. Baker, Kevin K. Ennett, John Eric Hein, Joseph Allen Brotz, Joseph William Barnier, Raymond Victor Froehlich, Michael Olsen, Sukanya Varadharajan
  • Publication number: 20140257275
    Abstract: A method of creating a thermochromic artificial blood vessel includes physically cross-linking a polyvinyl alcohol solution in a mold shaped to mimic a blood vessel to create an artificial blood vessel. The artificial tissue is then chemically cross-linked with a solution including a chemical cross-linking reagent. A coagulation solution is then applied to the artificial blood vessel to both inhibit the chemical cross-linking and promote physical cross-linking of the artificial blood vessel. The artificial blood vessel can be used to test an ablation catheter. The vessel, when heated by the ablation catheter, changes color and/or transparency at locations where the temperature of artificial blood vessel increases.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Applicant: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: Euhnee Cho, Valentine Kozov, Sukanya Varadharajan, Steven N. Willard