Patents by Inventor Saul E. Greenhut

Saul E. Greenhut 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: 20220288387
    Abstract: A medical device is configured to sense a cardiac electrical signal and detect an atrial tachyarrhythmia based on the sensed cardiac electrical signal. The medical device is configured to determine that far field oversensing criteria are met by the cardiac electrical signal during the detected atrial tachyarrhythmia. The medical device may detect termination of the detected atrial tachyarrhythmia in response to the far field oversensing criteria being met.
    Type: Application
    Filed: February 10, 2022
    Publication date: September 15, 2022
    Inventors: Saul E. GREENHUT, Mark L. BROWN, Vincent P. GANION, Yanina GRINBERG, Troy E. JACKSON, Todd J. SHELDON, Shravya SRIGIRI, Paul R. SOLHEIM
  • Patent number: 11413469
    Abstract: An implantable medical device system capable of sensing cardiac electrical signals includes a sensing circuit, a therapy delivery circuit and a control circuit. The sensing circuit is configured to receive a cardiac electrical signal and sense a cardiac event in response to the signal crossing a cardiac event sensing threshold. The therapy delivery circuit is configured to deliver an electrical stimulation therapy to a patient's heart via the electrodes coupled to the implantable medical device. The control circuit is configured to control the sensing circuit to set a starting value of the cardiac event sensing threshold and hold the starting value constant for a sense delay interval. The control circuit is further configured to detect an arrhythmia based on cardiac events sensed by the sensing circuit and control the therapy delivery circuit to deliver the electrical stimulation therapy in response to detecting the arrhythmia.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: August 16, 2022
    Assignee: Medtronic, Inc.
    Inventors: Jian Cao, Timothy A. Ebeling, Saul E. Greenhut, Michael W. Heinks, Irving J. Sanchez, Paul R. Solheim, Xusheng Zhang, Gerald P. Arne
  • Patent number: 11413470
    Abstract: An extra-cardiovascular implantable cardioverter defibrillator senses R-waves from a first cardiac electrical signal by a first sensing channel and stores a time segment of a second cardiac electrical signal in response to each sensed R-wave. The ICD determines intervals between successively sensed R-waves and, in response to at least a predetermined number of the intervals being less than a tachyarrhythmia detection interval, analyzes at least a portion of the time segment of the second cardiac electrical signal corresponding to a most recent one of the sensed R-waves to confirm the most recent one of the R-waves. The ICD updates an unconfirmed beat count in response to the most recent one of the R-waves not being confirmed and withholds detection of a tachyarrhythmia episode in response to the unconfirmed beat count being equal to or greater than a rejection threshold.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: August 16, 2022
    Assignee: Medtronic, Inc.
    Inventors: Xusheng Zhang, Jian L. Cao, Saul E. Greenhut, Robert W. Stadler
  • Publication number: 20220249007
    Abstract: A medical device system, such as an extra-cardiovascular implantable cardioverter defibrillator ICD, senses R-waves from a first cardiac electrical signal by a first sensing channel and stores a time segment of a second cardiac electrical signal in response to each sensed R-wave. The medical device system determines a morphology parameter correlated to signal noise from time segments of the second cardiac electrical signal, detects a noisy signal segment based on the signal morphology parameter; and withholds detection of a tachyarrhythmia episode in response to detecting a threshold number of noisy signal segments.
    Type: Application
    Filed: April 28, 2022
    Publication date: August 11, 2022
    Inventors: Xusheng ZHANG, Jian CAO, Saul E. GREENHUT
  • Patent number: 11399725
    Abstract: A method and apparatus for monitoring a cardiovascular pressure signal in a medical device that includes determining whether the sensed pressure signal is greater than a first pressure threshold, determining a first metric of the pressure signal in response to the sensed pressure signal being greater than the first pressure threshold, determining whether the sensed pressure signal is greater than a second pressure threshold not equal to the first pressure threshold, determining a second metric of the pressure signal in response to the sensed pressure signal being greater than the first pressure threshold, and determining at least one of a systolic pressure or a diastolic pressure, wherein the at least one of a systolic pressure or a diastolic pressure is determined based on the first metric in response to the pressure signal not being greater than the second threshold, and based on the second metric in response to the pressure signal being greater than the second threshold.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: August 2, 2022
    Assignee: Medtronic, Inc.
    Inventor: Saul E. Greenhut
  • Patent number: 11389100
    Abstract: The control module of a first pacemaker included in an implantable medical device system including the first pacemaker and a second pacemaker is configured to set a pacing escape interval in response to a far field pacing pulse sensed by the first pacemaker. The far field pacing pulse is a pacing pulse delivered by the second pacemaker. The pacing escape interval is allowed to continue without restarting the in response to a far field intrinsic event sensed by the first pacemaker during the pacing escape interval. The first pacemaker delivers a cardiac pacing pulse to the heart upon expiration of the pacing escape interval.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: July 19, 2022
    Assignee: Medtronic, Inc.
    Inventors: Wade M. Demmer, Todd J. Sheldon, Saul E. Greenhut, James D. Reinke
  • Publication number: 20220168575
    Abstract: A medical device is configured to sense an acceleration signal and determine at least one frequency metric from the acceleration signal that is correlated to a frequency of oscillations of the acceleration signal. The medial device is configured to determine that the at least one frequency metric meets atrial tachyarrhythmia criteria and detect an atrial tachyarrhythmia in response to at least the frequency metric meeting the atrial tachyarrhythmia criteria.
    Type: Application
    Filed: November 1, 2021
    Publication date: June 2, 2022
    Inventors: Saul E. GREENHUT, Vincent P. GANION, Yanina GRINBERG, Alexander R. MATTSON
  • Patent number: 11337636
    Abstract: A medical device system, such as an extra-cardiovascular implantable cardioverter defibrillator ICD, senses R-waves from a first cardiac electrical signal by a first sensing channel and stores a time segment of a second cardiac electrical signal in response to each sensed R-wave. The medical device system determines a morphology parameter correlated to signal noise from time segments of the second cardiac electrical signal, detects a noisy signal segment based on the signal morphology parameter; and withholds detection of a tachyarrhythmia episode in response to detecting a threshold number of noisy signal segments.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: May 24, 2022
    Assignee: Medtronic, Inc.
    Inventors: Xusheng Zhang, Jian Cao, Saul E. Greenhut
  • Publication number: 20220151523
    Abstract: This disclosure is related to devices, systems, and techniques for performing patient parameter measurements. In some examples, a medical device system includes an optical sensor configured to measure ambient light and a tissue oxygen saturation parameter and processing circuitry configured to determine that a current measurement of the tissue oxygen saturation parameter is prompted and control the optical sensor to perform an ambient light measurement associated with the current measurement of the tissue oxygen saturation parameter.
    Type: Application
    Filed: February 1, 2022
    Publication date: May 19, 2022
    Inventors: Jonathan L. Kuhn, Can Cinbis, Saul E. Greenhut
  • Publication number: 20220072316
    Abstract: A medical device is configured to generate an acceleration signal and a temperature signal. The device is configured to determine an activity metric from the acceleration signal that is representative of patient physical activity. In response to determining that the activity metric is equal to or greater than a previously determined activity metric, the device is configured to adjust a target cardiac pacing rate based at least on a temperature change determined from the temperature signal. The device may include a pulse generator for generating cardiac pacing pulses based on the target cardiac pacing rate.
    Type: Application
    Filed: August 17, 2021
    Publication date: March 10, 2022
    Inventors: Hyun J. YOON, Vincent P. GANION, Yanina GRINBERG, Saul E. GREENHUT, Todd J. SHELDON, Paul R. Solheim, Eric R. WILLIAMS
  • Publication number: 20220062646
    Abstract: A medical device is configured to sense a cardiac signal, determine a monitoring metric representative of activity of at least one heart chamber from the sensed cardiac signal, and determine that the monitoring metric meets expected rhythm criteria. The medical device may enable a monitoring feature of the medical device that is based on processing and analysis of the cardiac signal in response to the monitoring metric meeting the expected rhythm criteria.
    Type: Application
    Filed: August 3, 2021
    Publication date: March 3, 2022
    Inventors: Michelle M. GALARNEAU, Saul E. GREENHUT, Yanina GRINBERG, Todd J. SHELDON
  • Publication number: 20220061678
    Abstract: A system comprises a sensor device and processing circuitry. The sensor device comprises a housing configured to be disposed above shoulders of a patient, a plurality of electrodes on the housing, a motion sensor, and sensing circuitry configured to sense a brain electrical signal and a cardiac electrical signal via the electrodes, and a motion signal via the motion sensor. The processing circuitry is configured to determine values over time of one or more parameters from the brain electrical signal, determine values over time of one or more parameters from the cardiac electrical signal, and generate at least one of a detection, prediction, or a classification a condition of the patient based on the values and the motion signal.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Randal C. Schulhauser, Jonathon E. Giftakis, Eric J. Panken, John Wainwright, Nathalie Virag, Paul G. Krause, Yong K. Cho, Scott DeFoe, Avram Scheiner, Ekaterina M. Ippolito, David A. Anderson, Saul E. Greenhut, Mark R. Boone, Richard J. O'Brien
  • Patent number: 11234620
    Abstract: This disclosure is related to devices, systems, and techniques for performing patient parameter measurements. In some examples, a medical device system includes an optical sensor configured to measure ambient light and a tissue oxygen saturation parameter and processing circuitry configured to determine that a current measurement of the tissue oxygen saturation parameter is prompted and control the optical sensor to perform an ambient light measurement associated with the current measurement of the tissue oxygen saturation parameter.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: February 1, 2022
    Assignee: Medtronic, Inc.
    Inventors: Jonathan L. Kuhn, Can Cinbis, Saul E. Greenhut
  • Patent number: 11197630
    Abstract: A method and medical device for adjusting a blanking period that includes sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a plurality of sensing vectors, determining whether to adjust a blanking period during a first operating state, advancing from the first operating state to a second operating state in response to the sensed cardiac signals, determining, while in the second operating state, whether the blanking period was adjusted while in the first operating state, and adjusting the blanking period while in the second operating state in response to the blanking period being adjusted while in the first operating state.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: December 14, 2021
    Assignee: Medtronic, Inc.
    Inventors: Saul E. Greenhut, Robert W. Stadler, Xusheng Zhang
  • Publication number: 20210353233
    Abstract: A medical device is configured to sense event signals from a cardiac electrical signal and determine maximum amplitudes of cardiac electrical signal segments associated with sensed event signals. The medical device is configured to determine at least one tachyarrhythmia metric based on at least a greatest one of the determined maximum amplitudes. The medical device may determine when the at least one tachyarrhythmia metric does not meet true tachyarrhythmia evidence and, in response, determine when the maximum amplitudes meet suspected noise criteria. The medical device may withhold a tachyarrhythmia detection and tachyarrhythmia therapy when suspected noise criteria are met.
    Type: Application
    Filed: May 15, 2020
    Publication date: November 18, 2021
    Inventors: Saul E. GREENHUT, Yuanzhen LIU, Xusheng ZHANG
  • Publication number: 20210308465
    Abstract: A medical device includes a motion sensor configured to sense a motion signal. The medical device includes a control circuit configured to determine at least one ventricular event metric from the motion signal sensed over multiple of atrial cycles, determine that the ventricular event metric meets atrioventricular block criteria and generate an output in response to determining the atrioventricular block.
    Type: Application
    Filed: April 2, 2021
    Publication date: October 7, 2021
    Inventors: Michelle M. GALARNEAU, Vincent P. GANION, Saul E. GREENHUT, Yanina GRINBERG, Todd J. SHELDON, Paul R. SOLHEIM, Hyun J. YOON
  • Publication number: 20210299444
    Abstract: Techniques and systems for monitoring cardiac arrhythmias and delivering electrical stimulation therapy using a subcutaneous implantable cardioverter defibrillator (SICD) and a leadless pacing device (LPD) are described. For example, the SICD may detect a tachyarrhythmia within a first electrical signal from a heart and determine, based on the tachyarrhythmia, to deliver anti-tachyarrhythmia shock therapy to the patient to treat the detected arrhythmia. The LPD may receive communication from the SICD requesting the LPD deliver anti-tachycardia pacing to the heart and determine, based on a second electrical signal from the heart sensed by the LPD, whether to deliver anti-tachycardia pacing (ATP) to the heart. In this manner, the SICD and LPD may communicate to coordinate ATP and/or cardioversion/defibrillation therapy. In another example, the LPD may be configured to deliver post-shock pacing after detecting delivery of anti-tachyarrhythmia shock therapy.
    Type: Application
    Filed: June 11, 2021
    Publication date: September 30, 2021
    Inventors: Saul E. Greenhut, Robert J. Nehls, Walter H. Olson, Xusheng Zhang, Wade M. Demmer, Troy E. Jackson, James D. Reinke
  • Publication number: 20210251551
    Abstract: A medical device is configured to sense an electrical signal and determine that signal to noise criteria are met based on electrical signal segments stored in response to sensed electrophysiological events. The medical device is configured to determine an increased gain signal segment from one of the stored electrical signal segments in response to determining that the signal to noise criteria are met. The medical device determines a noise metric from the increased gain signal segment. The stored electrical signal segment associated with the increased gain signal segment may be classified as a noise segment in response to the noise metric meeting noise detection criteria.
    Type: Application
    Filed: February 10, 2021
    Publication date: August 19, 2021
    Inventors: Xusheng Zhang, Saul E. Greenhut, Yuanzhen Liu
  • Publication number: 20210196966
    Abstract: A medical device, such as an extra-cardiovascular implantable cardioverter defibrillator (ICD), senses R-waves from a first cardiac electrical signal by a first sensing channel and stores a time segment of a second cardiac electrical signal acquired by a second sensing channel in response to each sensed R-wave. The ICD determines morphology match scores from the stored time segments of the second cardiac electrical signal and, based on the morphology match scores, withholds detection of a tachyarrhythmia episode. In some examples, the ICD detects T-wave oversensing based on the morphology match scores and withholds detection of a tachyarrhythmia episode in response to detecting the T-wave oversensing.
    Type: Application
    Filed: November 27, 2020
    Publication date: July 1, 2021
    Inventors: Jian CAO, Saul E. GREENHUT, Xusheng ZHANG
  • Patent number: 11033743
    Abstract: Techniques and systems for monitoring cardiac arrhythmias and delivering electrical stimulation therapy using a subcutaneous implantable cardioverter defibrillator (SICD) and a leadless pacing device (LPD) are described. For example, the SICD may detect a tachyarrhythmia within a first electrical signal from a heart and determine, based on the tachyarrhythmia, to deliver anti-tachyarrhythmia shock therapy to the patient to treat the detected arrhythmia. The LPD may receive communication from the SICD requesting the LPD deliver anti-tachycardia pacing to the heart and determine, based on a second electrical signal from the heart sensed by the LPD, whether to deliver anti-tachycardia pacing (ATP) to the heart. In this manner, the SICD and LPD may communicate to coordinate ATP and/or cardioversion/defibrillation therapy. In another example, the LPD may be configured to deliver post-shock pacing after detecting delivery of anti-tachyarrhythmia shock therapy.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: June 15, 2021
    Assignee: MEDTRONIC, INC. (CVG)
    Inventors: Saul E. Greenhut, Robert J. Nehls, Walter H. Olson, Xusheng Zhang, Wade M. Demmer, Troy E. Jackson, James D. Reinke