Patents by Inventor Jong Gill

Jong Gill 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: 11896387
    Abstract: Described herein are methods, devices, and systems that use electrogram (EGM) or electrocardiogram (ECG) data for sleep apnea detection. An apparatus and method detect potential apnea events (an apnea or hypopnea event) using a signal indicative of cardiac electrical activity of a patient's heart, such as an EGM or ECG. Variations in one or more morphological or temporal features of the signal over several cardiac cycles are determined and used to detect a potential apnea event in a measurement period. Checks can then be made for a number of factors which could result in a false detection of an apnea event and if such factors are not present, an apnea event is recorded. Described herein are also methods, devices, and systems for classifying a patient as being asleep or awake, which can be used to selectively enable and disable sleep apnea detection monitoring, as well as in other manners.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: February 13, 2024
    Assignee: Pacesetter, Inc.
    Inventors: Jong Gill, Prakrit Shrestha, Kyungmoo Ryu
  • Patent number: 11890115
    Abstract: Computer implemented methods, devices and systems for monitoring a trend in heart failure (HF) progression are provided. The method comprises sensing left ventricular (LV) activation events at multiple LV sensing sites along a multi-electrode LV lead. The activation events are generated in response to an intrinsic or paced ventricular event. The method implements program instructions on one or more processors for automatically determining a conduction pattern (CP) across the LV sensing sites based on the LV activation events, identifying morphologies (MP) for cardiac signals associated with the LV activation events and repeating the sensing, determining and identifying operations, at select intervals, to build a CP collection and an MP collection. The method calculates an HF trend based on the CP collection and MP collection and classifies a patient condition based on the HF trend to form an HF assessment.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: February 6, 2024
    Assignee: Pacesetter, Inc.
    Inventors: Nima Badie, Jan O. Mangual-Soto, Luke C. McSpadden, Louis-Philippe Richer, Jong Gill
  • Patent number: 11883178
    Abstract: A computer implemented method for detecting arrhythmias in cardiac activity including obtaining far field cardiac activity (CA) signals for a series of beats. For at least a portion of the beats, the one or more processors perform, on a beat by beat basis: a) identifying first and second feature of interests (FOI) from a segment of the CA signal that corresponds to a current beat; and b) classifying the current beat into one of first and second groups. The method also includes designating one of the first and second groups to be a primary group based on a relation between the first and second groups, and for the beats in the primary group, selecting one of the first and second FOIs as the R-wave FOI. The method also includes rejecting an arrhythmia detection based on the P-waves detected.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: January 30, 2024
    Assignee: Pacesetter, Inc.
    Inventors: Fujian Qu, Nima Badie, Jong Gill
  • Publication number: 20230411019
    Abstract: System for arrhythmia detection and confirmation includes implantable medical device (IMD) having a sensing circuit for sensing cardiac activity (CA) for one or more cardiac cycles and generating one or more CA signals. An implantable pressure sensor (IPS) includes IPS sensing circuit for sensing pressure during the one or more cardiac cycles and generating one or more pressure signals. IMD and IPS include communications circuits for communicating with each other and/or an external device. One or both of IMD or IPS includes memory for storing program instructions and processor(s) for analyzing one of the CA or pressure signals, for one or more cardiac cycles, to detect a candidate arrhythmia. In response to detecting candidate arrhythmia, the processor(s) obtain another one of CA or pressure signals for cardiac cycles corresponding to the one or more cardiac cycles, and confirm or deny candidate arrhythmia based on the other one of the signals.
    Type: Application
    Filed: May 30, 2023
    Publication date: December 21, 2023
    Inventors: Jong Gill, Nima Badie, Kyungmoo Ryu, Avi Fischer, Philip B. Adamson
  • Publication number: 20230405335
    Abstract: An implantable medical device and computer implemented methods comprise a sensing circuit configured to sense cardiac activity (CA) signals. An accelerometer is configured to be implanted in a patient and obtain accelerometer data along at least one axis. A memory is configured to store program instructions and device parameters associated with each ventricular arrhythmia (VA) therapy in a collection of VA therapies with different levels of intensity. One or more processors execute the program instructions and are configured to analyze the CA signals over one or more cardiac beats, determine a VA episode based on the analysis of the CA signals, determine a posture of the patient based on the accelerometer data in response to the determination of the VA episode, and select a first VA therapy from the collection of VA therapies based on the posture.
    Type: Application
    Filed: May 30, 2023
    Publication date: December 21, 2023
    Inventors: Jong Gill, Kyungmoo Ryu
  • Patent number: 11844630
    Abstract: Computer implemented methods and systems for detecting noise in cardiac activity are provided. The method and system obtain a far field cardiac activity (CA) data set that includes far field CA signals for a series of beats, overlay a segment of the CA signals with a noise search window, and identify turns in the segment of the CA signals. The method and system determine whether the turns exhibit a turn characteristic that exceed a turn characteristic threshold, declare the segment of the CA signals as a noise segment based on the determining operation, shift the noise search window to a next segment of the CA signal and repeat the identifying, determining and declaring operations; and modify the CA signals based on the declaring the noise segments.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: December 19, 2023
    Assignee: Pacesetter, Inc.
    Inventors: Jong Gill, Fujian Qu, Neha Malhotra, Stuart Rosenberg, Gene A. Bornzin, Fady Dawoud
  • Publication number: 20230346258
    Abstract: A system for determining a change in position of an implanted medical device (IMD) within an implant pocket is provided. The system includes an accelerometer configured to be implanted in a patient, the accelerometer configured to obtain accelerometer data along at least one axis. The system also includes one or more processors configured to determine the patient is engaging in a determined activity over an activity period, and obtain the accelerometer data during the activity period. The one or more processors are also configured to identify postures of the patient and corresponding posture periods during the activity period based on the accelerometer data, determine a duration related to a non-standing posture identified from the postures identified, and identify a migration of the IMD within the implant pocket based on the duration of the non-standing posture exceeding a duration threshold.
    Type: Application
    Filed: March 30, 2023
    Publication date: November 2, 2023
    Inventors: Jong Gill, Fady Dawoud
  • Patent number: 11793445
    Abstract: Methods and systems are provided for detecting arrhythmias in cardiac activity. The methods and systems declare a current beat, from the CA signals, to be a candidate beat or an ineligible beat based on whether the current beat satisfies the rate based selection criteria. The determining and declaring operations are repeated for multiple beats to form an ensemble of candidate beats. The method and system calculate a P-wave segment ensemble from the ensemble of candidate beats, perform a morphology-based comparison between the P-wave segment ensemble and at least one of a monophasic or biphasic template, declare a valid P-wave to be present within the CA signals based on the morphology-based comparison, and utilize the valid P-wave in an arrhythmia detection process to determine at least one of an arrhythmia entry, arrhythmia presence or arrhythmia exit.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: October 24, 2023
    Assignee: Pacesetter, Inc.
    Inventors: Neha Malhotra, Fujian Qu, Jong Gill, Stuart Rosenberg, Gene A. Bornzin, Fady Dawoud
  • Patent number: 11766207
    Abstract: Described herein are methods, devices, and systems for improving R-wave detection sensitivity and positive predictive value, and for improving arrhythmia detection accuracy. Certain embodiments involve determining whether to classify a potential R-wave as a false R-wave (or more specifically, an over-sensed P-wave) by determining a measure of magnitude of a first portion of the signal corresponding to a first window following the potential R-wave, determining the measure of magnitude of a second portion of the signal corresponding to a second window following the first window, and classifying the potential R-wave as a false R-wave if the measure of magnitude of the second portion of the signal is at least a specified extent larger (e.g., at least 3 times larger) than the measure of magnitude of the first portion of the signal. Certain embodiments also involve adjusting an R-wave marker for a potential R-wave that is classified as a false R-wave.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: September 26, 2023
    Assignee: Pacesetter, Inc.
    Inventors: Nima Badie, Fujian Qu, Jong Gill
  • Publication number: 20230293083
    Abstract: Described herein are methods, devices, and systems that improve arrhythmia episode detection specificity, such as, but not limited to, atrial fibrillation (AF) episode detection specificity. Such a method can include obtaining an ordered list of R-R intervals within a window leading up to a detection of a potential arrhythmia episode, determining a measure of a dominant repeated R-R interval pattern within the window, and comparing the measure of the dominant repeated R-R interval pattern to a pattern threshold. If the measure of the dominant repeated R-R interval pattern is below the pattern threshold, that is indicative of a regularly irregular pattern being present, and there is a determination that the detection of the potential arrhythmia episode does not correspond to an actual arrhythmia episode. Such embodiments can beneficially be used to significantly reduce the number of false positive arrhythmia detections.
    Type: Application
    Filed: March 28, 2023
    Publication date: September 21, 2023
    Applicant: Pacesetter, Inc.
    Inventors: Nima Badie, Fujian Qu, Jong Gill
  • Publication number: 20230263480
    Abstract: A system for verifying a candidate pathologic episode of a patient is provided that includes an accelerometer configured to be implanted in the patient. The accelerometer is configured to obtain accelerometer data along at least one axis. The system also includes a memory configured to store program instructions, and one or more processors that, when executing the program instructions, are configured to obtain accelerometer data. The one or more processors are also configured to determine a plurality of control three-dimensional point vectors related to the accelerometer data, and obtain a biological signal and identify a candidate pathologic episode based on the biological signal. The one or more processors are also configured to analyze the plurality of control three-dimensional point vectors to identify a physical action experienced by the patient, and verify the candidate pathologic episode based on the physical action.
    Type: Application
    Filed: November 21, 2022
    Publication date: August 24, 2023
    Inventors: Kevin J. Davis, Nima Badie, Jong Gill
  • Publication number: 20230149727
    Abstract: A computer implemented method for determining heart arrhythmias based on cardiac activity that includes under control of one or more processors of an implantable medical device (IMD) configured with specific executable instructions to obtain far field cardiac activity (CA) signals at electrodes located remote from the heart, and obtain acceleration signatures, at an accelerometer of the IMD, indicative of heart sounds generated during the cardiac beats. The IMD is also configured with specific executable instructions to declare a candidate arrhythmia based on a characteristic of at least one R-R interval from the cardiac beats, and evaluate the acceleration signatures for ventricular events (VEs) to re-assess a presence or absence of at least one R-wave from the cardiac beats and based thereon confirming or denying the candidate arrhythmia.
    Type: Application
    Filed: January 6, 2023
    Publication date: May 18, 2023
    Inventors: Jong Gill, Gene Bornzin
  • Patent number: 11647940
    Abstract: Described herein are methods, devices, and systems that improve arrhythmia episode detection specificity, such as, but not limited to, atrial fibrillation (AF) episode detection specificity. Such a method can include obtaining an ordered list of R-R intervals within a window leading up to a detection of a potential arrhythmia episode, determining a measure of a dominant repeated R-R interval pattern within the window, and comparing the measure of the dominant repeated R-R interval pattern to a pattern threshold. If the measure of the dominant repeated R-R interval pattern is below the pattern threshold, that is indicative of a regularly irregular pattern being present, and there is a determination that the detection of the potential arrhythmia episode does not correspond to an actual arrhythmia episode. Such embodiments can beneficially be used to significantly reduce the number of false positive arrhythmia detections.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: May 16, 2023
    Assignee: Pacesetter, Inc
    Inventors: Nima Badie, Fujian Qu, Jong Gill
  • Publication number: 20230135859
    Abstract: Described herein are methods, devices, and systems that monitor heart rate and/or for arrhythmic episodes based on sensed intervals that can include true R-R intervals as well as over-sensed R-R intervals. True R-R intervals are initially identified from an ordered list of the sensed intervals by comparing individual sensed intervals to a sum of an immediately preceding two intervals, and/or an immediately following two intervals. True R-R intervals are also identified by comparing sensed intervals to a mean or median of durations of sensed intervals already identified as true R-R intervals. Individual intervals in a remaining ordered list of sensed intervals (from which true R-R intervals have been removed) are classified as either a short interval or a long interval, and over-sensed R-R intervals are identified based on the results thereof. Such embodiments can be used, e.g., to reduce the reporting of and/or inappropriate responses to false positive tachycardia detections.
    Type: Application
    Filed: December 27, 2022
    Publication date: May 4, 2023
    Applicant: Pacesetter, Inc.
    Inventors: Nima Badie, Fujian Qu, Jong Gill
  • Patent number: 11633141
    Abstract: Computer implemented methods and systems for detecting arrhythmias in cardiac activity are provided. The method is under control of one or more processors configured with specific executable instructions. The method obtains a far field cardiac activity (CA) data set that includes far field CA signals for beats. The method applies a feature enhancement function to the CA signals to form an enhanced feature in the CA data set. The method calculates an adaptive sensitivity level and sensitivity limit based on the enhanced feature from one or more beats within the CA data set and automatically iteratively analyzes a beat segment of interest by comparing the beat segment of interest to the current sensitivity level to determine whether one or more R-waves are present within the beat segment of interest.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: April 25, 2023
    Assignee: Pacesetter, Inc.
    Inventors: Fady Dawoud, Fujian Qu, Stuart Rosenberg, Gene A. Bornzin, Jong Gill, Neha Malhotra, Xiaoyi Min
  • Publication number: 20230122269
    Abstract: Computer implemented methods and systems for detecting noise in cardiac activity are provided. The method and system obtain a far field cardiac activity (CA) data set that includes far field CA signals for a series of beats, overlay a segment of the CA signals with a noise search window, and identify turns in the segment of the CA signals. The method and system determine whether the turns exhibit a turn characteristic that exceed a turn characteristic threshold, declare the segment of the CA signals as a noise segment based on the determining operation, shift the noise search window to a next segment of the CA signal and repeat the identifying, determining and declaring operations; and modify the CA signals based on the declaring the noise segments.
    Type: Application
    Filed: December 20, 2022
    Publication date: April 20, 2023
    Inventors: Jong Gill, Fujian Qu, Neha Malhotra, Stuart Rosenberg, Gene A. Bornzin, Fady Dawoud
  • Patent number: 11564632
    Abstract: Computer implemented methods and systems for detecting noise in cardiac activity are provided. The method and system obtain a far field cardiac activity (CA) data set that includes far field CA signals for a series of beats, overlay a segment of the CA signals with a noise search window, and identify turns in the segment of the CA signals. The method and system determine whether the turns exhibit a turn characteristic that exceed a turn characteristic threshold, declare the segment of the CA signals as a noise segment based on the determining operation, shift the noise search window to a next segment of the CA signal and repeat the identifying, determining and declaring operations; and modify the CA signals based on the declaring the noise segments.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: January 31, 2023
    Assignee: Pacesetter, Inc.
    Inventors: Jong Gill, Fujian Qu, Neha Malhotra, Stuart Rosenberg, Gene A. Bornzin, Fady Dawoud
  • Patent number: 11559696
    Abstract: A computer implemented method for determining heart arrhythmias based on cardiac activity that includes under control of one or more processors of an implantable medical device (IMD) configured with specific executable instructions to obtain far field cardiac activity (CA) signals at electrodes located remote from the heart, and obtain acceleration signatures, at an accelerometer of the IMD, indicative of heart sounds generated during the cardiac beats. The IMD is also configured with specific executable instructions to declare a candidate arrhythmia based on a characteristic of at least one R-R interval from the cardiac beats, and evaluate the acceleration signatures for ventricular events (VEs) to re-assess a presence or absence of at least one R-wave from the cardiac beats and based thereon confirming or denying the candidate arrhythmia.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: January 24, 2023
    Assignee: Pacesetter, Inc.
    Inventors: Jong Gill, Gene Bornzin
  • Patent number: 11559242
    Abstract: Described herein are methods, devices, and systems that monitor heart rate and/or for arrhythmic episodes based on sensed intervals that can include true R-R intervals as well as over-sensed R-R intervals. True R-R intervals are initially identified from an ordered list of the sensed intervals by comparing individual sensed intervals to a sum of an immediately preceding two intervals, and/or an immediately following two intervals. True R-R intervals are also identified by comparing sensed intervals to a mean or median of durations of sensed intervals already identified as true R-R intervals. Individual intervals in a remaining ordered list of sensed intervals (from which true R-R intervals have been removed) are classified as either a short interval or a long interval, and over-sensed R-R intervals are identified based on the results thereof. Such embodiments can be used, e.g., to reduce the reporting of and/or inappropriate responses to false positive tachycardia detections.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: January 24, 2023
    Assignee: Pacesetter, Inc.
    Inventors: Nima Badie, Fujian Qu, Jong Gill
  • Patent number: 11547339
    Abstract: A computer implemented method and system for detecting arrhythmias in cardiac activity are provided. The method is under control of one or more processors configured with specific executable instructions. The method obtains far field cardiac activity (CA) signals and applies a direction related responsiveness (DRR) filter to the CA signals to produce DRR filtered signals. The method compares a current sample from the CA signals to a prior sample from the DRR filtered signals to identify a direction characteristic of the CA signals and defines the DRR filter based on a timing constant that is set based on the direction characteristic identified. The method analyzes the CA signals in connection with the DRR filtered signals to identify a peak characteristic of the CA signals and determines peak to peak intervals between successive peak characteristic. The method detects at least one of noise or an arrhythmia based on the peak to peak intervals and records results of the detecting.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: January 10, 2023
    Assignee: PACESETTER, INC.
    Inventors: Gene A. Bornzin, Fady Dawoud, Jong Gill, Stuart Rosenberg, Fujian Qu, Neha Malhotra