Patents by Inventor Robert W. SAWCHUK

Robert W. SAWCHUK 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).

  • Charge balanced cardiac pacing from high voltage circuitry of an extra-cardiovascular implantable cardioverter defibrillator system
    Patent number: 11524169
    Abstract: An extra-cardiovascular implantable cardioverter defibrillator (ICD) having a high voltage therapy module is configured to control a high voltage charging circuit to charge a capacitor to a pacing voltage amplitude to deliver charge balanced pacing pulses. The capacitor is chargeable to a shock voltage amplitude that is greater than the pacing voltage amplitude. The ICD is configured to enable switching circuitry of the high voltage therapy module to discharge the capacitor to deliver a first pulse having a first polarity and a leading voltage amplitude corresponding to the pacing voltage amplitude for pacing the patient's heart via a pacing electrode vector selected from extra-cardiovascular electrodes. The high voltage therapy module delivers a second pulse after the first pulse. The second pulse has a second polarity opposite the first polarity and balances the electrical charge delivered during the first pulse.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: December 13, 2022
    Assignee: Medtronic, Inc.
    Inventors: Yanina Grinberg, Paul D. Baker, Lonny V. Cabelka, Craig W. Dorma, Timothy A. Ebeling, Michael W. Heinks, James Vander Heyden, Joseph Ippolito, Joel R. Lauer, Robert W. Sawchuk, Brian W. Schousek
  • CHARGE BALANCED CARDIAC PACING FROM HIGH VOLTAGE CIRCUITRY OF AN EXTRA-CARDIOVASCULAR IMPLANTABLE CARDIOVERTER DEFIBRILLATOR SYSTEM
    Publication number: 20180221677
    Abstract: An extra-cardiovascular implantable cardioverter defibrillator (ICD) having a high voltage therapy module is configured to control a high voltage charging circuit to charge a capacitor to a pacing voltage amplitude to deliver charge balanced pacing pulses. The capacitor is chargeable to a shock voltage amplitude that is greater than the pacing voltage amplitude. The ICD is configured to enable switching circuitry of the high voltage therapy module to discharge the capacitor to deliver a first pulse having a first polarity and a leading voltage amplitude corresponding to the pacing voltage amplitude for pacing the patient's heart via a pacing electrode vector selected from extra-cardiovascular electrodes. The high voltage therapy module delivers a second pulse after the first pulse. The second pulse has a second polarity opposite the first polarity and balances the electrical charge delivered during the first pulse.
    Type: Application
    Filed: February 6, 2017
    Publication date: August 9, 2018
    Inventors: Yanina GRINBERG, Paul D. BAKER, Lonny V. CABELKA, Craig W. DORMA, Timothy A. EBELING, Michael W. HEINKS, James VANDER HEYDEN, Joseph IPPOLITO, Joel R. LAUER, Robert W. SAWCHUK, Brian W. SCHOUSEK