Patents by Inventor Harikrishna Tandri

Harikrishna Tandri 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: 11957617
    Abstract: The present invention provides a method and device for non-invasive anatomical and systemic cooling, fluid removal and/or energy removal. The method and device provide for removal of fluid and cooling of various bodily fluid-containing spaces or surfaces, such as mucus-containing spaces or surfaces via delivery of a dry fluid not including a coolant into or upon the mucus-containing space or surface. Exposure of such mucus to the dry fluid results in evaporation of body fluid, removal of energy, cooling of the anatomical feature, and systemic cooling. In this fashion, therapeutic hypothermia may be achieved to provide for neuroprotection of various organs after ischemic insult, such the brain after cardiac arrest. Similarly, excess fluid removal may be achieved for treatment of cardiogenic shock or other conditions that cause significant fluid build-up, especially in cases of compromised renal function.
    Type: Grant
    Filed: October 13, 2022
    Date of Patent: April 16, 2024
    Assignee: The Johns Hopkins University
    Inventors: Harikrishna Tandri, Menekhem Muz Zviman
  • Patent number: 11717694
    Abstract: The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: August 8, 2023
    Assignee: The Johns Hopkins University
    Inventors: Harikrishna Tandri, Ronald David Berger, Seth Weinberg, Leslie Tung, Henry Halperin, David Hunter
  • Publication number: 20230181353
    Abstract: The present invention provides a method and device for non-invasive anatomical and systemic cooling, fluid removal and/or energy removal. The method and device provide for removal of fluid and cooling of various bodily fluid-containing spaces or surfaces, such as mucus-containing spaces or surfaces via delivery of a dry fluid not including a coolant into or upon the mucus-containing space or surface. Exposure of such mucus to the dry fluid results in evaporation of body fluid, removal of energy, cooling of the anatomical feature, and systemic cooling. In this fashion, therapeutic hypothermia may be achieved to provide for neuroprotection of various organs after ischemic insult, such the brain after cardiac arrest. Similarly, excess fluid removal may be achieved for treatment of cardiogenic shock or other conditions that cause significant fluid build-up, especially in cases of compromised renal function.
    Type: Application
    Filed: October 13, 2022
    Publication date: June 15, 2023
    Inventors: Harikrishna Tandri, Menekhem Muz Zviman
  • Publication number: 20230173216
    Abstract: A portable device for treatment of migraine having a desktop unit defining an airpath through a desiccant, a heat sink, an air mover and an air outlet, and a tubeset including a tube having one end for connecting to the desktop air outlet and a second end connected to a handheld unit, the handheld unit including a water compartment, and a nebulizer/transducer for introducing water droplets into the air stream. A nasal pillow is provided at the end of the handheld unit for placing against a user's nose.
    Type: Application
    Filed: October 3, 2022
    Publication date: June 8, 2023
    Inventors: Harikrishna Tandri, William DeMore, Krystian Zimowski, Brian Lipford, Steven Schaefer, Benjamin R. Lane, Edward R. Prescott, Jonathan H. Green, Kun Li, Thomas Daniel James, Kayleigh E. Boyle, Colby Johnson, Michael Damiani
  • Publication number: 20230011001
    Abstract: A system and method are provided for a navigational feedback to a catheter during an arrhythmia ablation procedure. A set of electrocardiogram (ECG) signals of a patient's arrhythmia is recorded that correspond to an unknown target location to be ablated by the catheter. During the ablation procedure, pacing locations and ECG signals corresponding to the pacing locations are collected to derive a mathematical operator that maps a 12-dimensional displacement vector in the ECG space to a 3-dimensional (3D) vector in a physical space. This 3D vector corresponds to a direction and a distance that the catheter needs to be moved in order to reach the target location of the arrhythmia.
    Type: Application
    Filed: December 2, 2020
    Publication date: January 12, 2023
    Inventors: Konstantinos N. ARONIS, Ronald D. BERGER, Natalia A. TRAYANOVA, Shijie ZHOU, Harikrishna TANDRI
  • Publication number: 20220314010
    Abstract: A magnetic-resonance-imaging-compatible (MRI-compatible) cardiac defibrillator includes: a defibrillator generator; first and second electric wires, each being electrically connected to said defibrillator generator; first and second defibrillation pads, each being electrically connected to a respective one of said first and second electric wires; and a low pass filter electrically connected between said defibrillator generator and said first and second electric wires to prevent a noise in an MRI image caused by a radiofrequency interference from the defibrillator as well as protect a patient and the defibrillator from MRI radiofrequency imaging signals, wherein said low pass filter has a cutoff frequency set such that differential mode noise at an MRI Larmor frequency is in an attenuated band while a system-test signal by said defibrillator generator is in a pass band of said low pass filter.
    Type: Application
    Filed: November 15, 2021
    Publication date: October 6, 2022
    Applicant: The Johns Hopkins University
    Inventors: Henry Halperin, Ehud J. Schmidt, Ronald D. Watkins, Harikrishna Tandri, David Hunter, Leslie Tung, Ronald D. Berger
  • Patent number: 11185707
    Abstract: A magnetic-resonance-imaging-compatible (MRI-compatible) cardiac defibrillator includes: a defibrillator generator; first and second electric wires, each being electrically connected to said defibrillator generator; first and second defibrillation pads, each being electrically connected to a respective one of said first and second electric wires; and a low pass filter electrically connected between said defibrillator generator and said first and second electric wires to prevent a noise in an MRI image caused by a radiofrequency interference from the defibrillator as well as protect a patient and the defibrillator from MRI radiofrequency imaging signals, wherein said low pass filter has a cutoff frequency set such that differential mode noise at an MRI Larmor frequency is in an attenuated band while a system-test signal by said defibrillator generator is in a pass band of said low pass filter.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 30, 2021
    Assignee: The Johns Hopkins University
    Inventors: Henry Halperin, Ehud J. Schmidt, Ronald D. Watkins, Harikrishna Tandri, David Hunter, Leslie Tung, Ronald D. Berger
  • Publication number: 20210290967
    Abstract: The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.
    Type: Application
    Filed: June 8, 2021
    Publication date: September 23, 2021
    Inventors: Harikrishna Tandri, Ronald David Berger, Seth Weinberg, Leslie Tung, Henry Halperin, David Hunter
  • Patent number: 11052261
    Abstract: The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: July 6, 2021
    Assignee: The Johns Hopkins University
    Inventors: Harikrishna Tandri, Ronald David Berger, Seth Weinberg, Leslie Tung, Henry Halperin, David Hunter
  • Patent number: 10842556
    Abstract: Methods and devices for treating patients having cardiopulmonary disease such as cardiac arrhythmias, ventricular arrhythmias, pulmonary hypertension, or heart failure comprising a tracheal approach. The method includes ablating a deep cardiac plexus of a patient by advancing an treatment apparatus into a trachea of the patient, extending an ablative energy delivery element of the treatment apparatus through a wall of the trachea at a level of the trachea proximate a tracheal bifurcation, positioning the ablative energy delivery element at a target space between the trachea, an aorta and a pulmonary artery, and ablating, by the ablative energy delivery element, tissue within the target space to substantially disable the deep cardiac plexus.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: November 24, 2020
    Assignees: The Johns Hopkins University, Coridea, LLC
    Inventors: Harikrishna Tandri, Mark Gelfand, Tamara Colette Baynham, Zoar Engelman
  • Publication number: 20200086130
    Abstract: A magnetic-resonance-imaging-compatible (MRI-compatible) cardiac defibrillator includes: a defibrillator generator; first and second electric wires, each being electrically connected to said defibrillator generator; first and second defibrillation pads, each being electrically connected to a respective one of said first and second electric wires; and a low pass filter electrically connected between said defibrillator generator and said first and second electric wires to prevent a noise in an MRI image caused by a radiofrequency interference from the defibrillator as well as protect a patient and the defibrillator from MRI radiofrequency imaging signals, wherein said low pass filter has a cutoff frequency set such that differential mode noise at an MRI Larmor frequency is in an attenuated band while a system-test signal by said defibrillator generator is in a pass band of said low pass filter.
    Type: Application
    Filed: December 8, 2017
    Publication date: March 19, 2020
    Applicant: The Johns Hopkins University
    Inventors: Henry Halperin, Ehud J. Schmidt, Ronald D. Watkins, Harikrishna Tandri, David Hunter, Leslie Tung, Ronald D. Berger
  • Patent number: 10532216
    Abstract: The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: January 14, 2020
    Assignee: The Johns Hopkins University
    Inventors: Harikrishna Tandri, Ronald David Berger, Seth Weinberg, Leslie Tung, Henry Halperin, David Hunter
  • Publication number: 20190343579
    Abstract: A treatment apparatus including: a bronchoscope including a flexible shaft having working channel; a transbronchial ablation probe configured to extend from a distal end of the working channel and extend thru a wall of a trachea and into tissue outside of the trachea; and a stabilization element mounted to a distal portion of the flexible shaft, wherein the stabilization element is configured to brace the distal portion against the wall of the trachea while the transbronchial ablation probe is extended through the wall of the trachea.
    Type: Application
    Filed: December 22, 2017
    Publication date: November 14, 2019
    Inventors: Harikrishna Tandri, Mark Gelfand, Tamara Baynham, Zoar Engelman
  • Publication number: 20190053847
    Abstract: The present invention is directed to device and method for electrically modulating the function of a sympathetic nerve that control sympathetic activity of the renal arteries in the human body. The method includes modifying neural fibers that regulate sympathetic activity of renal tissue to accentuate or attenuate function. The present invention also includes an apparatus for executing methods to regulate renal sympathetic activity via intravascular lumen.
    Type: Application
    Filed: February 23, 2017
    Publication date: February 21, 2019
    Inventors: Harikrishna Tandri, Menekhem Zviman, Ronald D. Berger
  • Publication number: 20180085594
    Abstract: The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.
    Type: Application
    Filed: November 29, 2017
    Publication date: March 29, 2018
    Inventors: Harikrishna Tandri, Ronald David Berger, Seth Weinberg, Leslie Tung, Henry Halperin, Henry Hunter
  • Publication number: 20160331447
    Abstract: The present invention is directed to device and method for electrically modulating the function of nerves that control sympathetic activity of the renal arteries in the human body. The method includes modifying neural fibers that regulate sympathetic activity of renal tissue to accentuate or attenuate function. The present invention also includes an apparatus for executing methods to regulate renal sympathetic activity via intravascular lumen. Additionally, a system and method to transvenously ablate the renal nerves around the renal artery ostia are disclosed.
    Type: Application
    Filed: December 19, 2014
    Publication date: November 17, 2016
    Inventors: Harikrishna Tandri, Menekhem Zviman, Ronald David Berger
  • Publication number: 20150321021
    Abstract: The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.
    Type: Application
    Filed: January 23, 2014
    Publication date: November 12, 2015
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Harikrishna Tandri, Ronald David Berger, Seth Weinberg, Leslie Tung, Natalia Trayanova
  • Publication number: 20150258344
    Abstract: The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.
    Type: Application
    Filed: January 23, 2015
    Publication date: September 17, 2015
    Inventors: Harikrishna Tandri, Ronald David Berger, Seth Weinberg, Leslie Tung, Henry Halperin, David Hunter
  • Publication number: 20120215269
    Abstract: The present invention provides both methods and devices for termination of arrhythmias, such as ventricular or atrial tachyarrhythmias. The device and method involves application of alternating current (AC) for clinically significant durations at selected therapeutic frequencies through the cardiac tissue to a subject experiencing arrhythmia. Methods are also provided to minimize or eliminate pain during defibrillation.
    Type: Application
    Filed: September 3, 2010
    Publication date: August 23, 2012
    Inventors: Harikrishna Tandri, Ronald David Berger, Seth Weinberg, Leslie Tung, Natalia Trayanova