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).
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Publication number: 20210290288Abstract: 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: ApplicationFiled: June 10, 2021Publication date: September 23, 2021Inventors: 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
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Patent number: 11058474Abstract: 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: GrantFiled: August 28, 2017Date of Patent: July 13, 2021Assignee: 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
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Patent number: 10918434Abstract: 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: GrantFiled: May 3, 2018Date of Patent: February 16, 2021Assignee: 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
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Publication number: 20180250059Abstract: 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: ApplicationFiled: May 3, 2018Publication date: September 6, 2018Inventors: 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
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Patent number: 9987070Abstract: 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: GrantFiled: March 11, 2014Date of Patent: June 5, 2018Assignee: 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
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Publication number: 20170354454Abstract: 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: ApplicationFiled: August 28, 2017Publication date: December 14, 2017Inventors: 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
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Patent number: 9775663Abstract: 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: GrantFiled: March 11, 2014Date of Patent: October 3, 2017Assignee: 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
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Patent number: 9179997Abstract: 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: GrantFiled: March 6, 2013Date of Patent: November 10, 2015Assignee: St. Jude Medical, Cardiology Division, Inc.Inventors: Eunhee Cho, Valentine Kozov, Sukanya Varadharajan, Steven N. Willard
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Publication number: 20140330266Abstract: 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: ApplicationFiled: April 22, 2014Publication date: November 6, 2014Inventors: Sara A. Thompson, John B. Blix, Sukanya Varadharajan, Mark Allen Catron
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Publication number: 20140316400Abstract: 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: ApplicationFiled: March 11, 2014Publication date: October 23, 2014Inventors: 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
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Publication number: 20140276765Abstract: 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: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Inventors: 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
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Publication number: 20140257275Abstract: 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: ApplicationFiled: March 6, 2013Publication date: September 11, 2014Applicant: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.Inventors: Euhnee Cho, Valentine Kozov, Sukanya Varadharajan, Steven N. Willard