公开(公告)号：US11717208B2

公开(公告)日：2023-08-08

申请号：US16921346

申请日：2020-07-06

Applicant: Medtronic, Inc.

Inventor： John E. Burnes ,  Shantanu Sarkar ,  Gautham Rajagopal

IPC: A61B5/00 ,  A61B5/333 ,  G16H50/70 ,  A61B5/316 ,  A61B5/339 ,  A61B5/349 ,  A61B5/352

CPC classification number: A61B5/333 ,  A61B5/316 ,  A61B5/339 ,  A61B5/349 ,  A61B5/352 ,  G16H50/70

Abstract: Techniques for triggering the storage or transmission of cardiac electrogram (EGM) signals associated with a premature ventricular contractions (PVC) include sensing a cardiac EGM signal of a patient via a plurality of electrodes, detecting a premature ventricular contraction (PVC) within the cardiac EGM signal, determining whether PVC storage criteria is met, in response to a determination that the PVC storage criteria is met, storing a portion of the cardiac EGM signal associated with the PVC, and in response to a determination that the PVC storage criteria is not met, eschewing storing the portion of the cardiac EGM signal associated with the PVC.

公开(公告)号：US11589794B2

公开(公告)日：2023-02-28

申请号：US17208480

申请日：2021-03-22

Applicant: Medtronic, Inc.

Inventor： Gautham Rajagopal ,  Shantanu Sarkar

IPC: A61B5/36 ,  A61B5/352 ,  A61B5/355 ,  A61B5/00

Abstract: An example device for detecting one or more parameters of a cardiac signal is disclosed herein. The device includes one or more electrodes and sensing circuitry configured to sense a cardiac signal via the one or more electrodes. The device further includes processing circuitry configured to determine an R-wave of the cardiac signal and determine a previous RR interval of the cardiac signal and a current RR interval of the cardiac signal based on the determined R-wave. The processing circuitry is further configured to determine a search window based on one or more of the current RR interval or the previous RR interval, determine a T-wave of the cardiac signal in the search window, and determine a QT interval based on the determined T-wave and the determined R-wave.

公开(公告)号：US11576606B2

公开(公告)日：2023-02-14

申请号：US17208510

申请日：2021-03-22

Applicant: Medtronic, Inc.

Inventor： Gautham Rajagopal ,  Shantanu Sarkar

IPC: A61B5/36 ,  A61B5/352 ,  A61B5/355 ,  A61B5/00

Abstract: An example device for detecting one or more parameters of a cardiac signal is disclosed herein. The device includes one or more electrodes and sensing circuitry configured to sense a cardiac signal via the one or more electrodes. The device further includes processing circuitry configured to determine an R-wave of the cardiac signal and determine whether the R-wave is noisy. Based on the R-wave being noisy, the processing circuitry is configured to determine whether the cardiac signal around a determined T-wave is noisy. Based on the cardiac signal around the determined T-wave not being noisy, the processing circuitry is configured to determine a QT interval or a corrected QT interval based on the determined T-wave and the determined R-wave.

公开(公告)号：US11517242B2

公开(公告)日：2022-12-06

申请号：US16700087

申请日：2019-12-02

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Daniel L. Hansen ,  Grant A. Neitzell ,  Jerry D. Reiland ,  Ryan Wyszynski

IPC: A61B5/361 ,  A61N1/362 ,  A61N1/365 ,  A61N1/39 ,  A61B5/24 ,  A61B5/316 ,  A61B5/349 ,  A61B5/352 ,  A61B5/00 ,  A61B5/363

Abstract: Techniques and devices for implementing the techniques for adjusting atrial arrhythmia detection based on analysis of one or more P-wave sensing windows associated with one or more R-waves. An implantable medical device may determine signal characteristics of the cardiac signal within the P-wave sensing window, determine whether the cardiac signal within the sensing window corresponds to a P-wave based on the determined signal characteristics, determine a signal to noise ratio of the cardiac signal within the sensing window, update the arrhythmia score when the P-wave is identified in the sensing window and the determined signal to noise ratio satisfies a signal to noise threshold.

公开(公告)号：US20220369937A1

公开(公告)日：2022-11-24

申请号：US17246331

申请日：2021-04-30

Applicant: Medtronic, Inc.

Inventor： Yong K. Cho ,  Ryan D. Wyszynski ,  Grant A. Neitzell ,  Paul G. Krause ,  Kevin T. Ousdigian ,  Paul J. DeGroot ,  Shantanu Sarkar ,  Christopher D. Koch

IPC: A61B5/0205 ,  A61B5/00 ,  A61B5/318 ,  A61B5/053 ,  A61B5/11 ,  A61B5/08 ,  A61B5/021 ,  A61B7/00

Abstract: A system comprises processing circuitry and memory comprising program instructions that, when executed by the processing circuitry, cause the processing circuitry to: apply a first set of rules to first patient parameter data for a first determination of whether sudden cardiac arrest of a patient is detected; determine that a one or more context criteria of the first determination are satisfied; and in response to satisfaction of the context criteria, apply a second set of rules to second patient parameter data for a second determination of whether sudden cardiac arrest of the patient is detected. At least the second set of rules comprises a machine learning model, and the second patient parameter data comprises at least one patient parameter that is not included in the first patient parameter data.

公开(公告)号：US20210307669A1

公开(公告)日：2021-10-07

申请号：US17208510

申请日：2021-03-22

Applicant: Medtronic, Inc.

Inventor： Gautham Rajagopal ,  Shantanu Sarkar

IPC: A61B5/36 ,  A61B5/355 ,  A61B5/352

Abstract: An example device for detecting one or more parameters of a cardiac signal is disclosed herein. The device includes one or more electrodes and sensing circuitry configured to sense a cardiac signal via the one or more electrodes. The device further includes processing circuitry configured to determine an R-wave of the cardiac signal and determine whether the R-wave is noisy. Based on the R-wave being noisy, the processing circuitry is configured to determine whether the cardiac signal around a determined T-wave is noisy. Based on the cardiac signal around the determined T-wave not being noisy, the processing circuitry is configured to determine a QT interval or a corrected QT interval based on the determined T-wave and the determined R-wave.

公开(公告)号：US20210204885A1

公开(公告)日：2021-07-08

申请号：US17208666

申请日：2021-03-22

Applicant: Medtronic, Inc.

Inventor： Vinod Sharma ,  Joel R. Lauer ,  Holly S. Norman ,  Kevin L. Wong ,  Shantanu Sarkar

IPC: A61B5/00 ,  A61B5/02 ,  A61B5/24 ,  A61B5/339 ,  A61B5/349

Abstract: A method for differentiating heart failure risk scores that includes receiving a current data transmission and acquiring patient metrics from a remote device, determining a daily heart failure risk score for each day occurring during a time period from a previous received data transmission to the current received data transmission based on the acquired patient metrics, determining a maximum daily heart failure risk score of the determined daily heart failure risk scores during a lookback window prior to the current received data transmission, determining a heart failure risk status alert for the received data transmission based on the temporal proximity of the determined maximum heart failure risk score and receipt of the current data transmission, selecting a type of notification based on the heart failure risk status differentiation, and indicating the transmission heart failure risk status and the heart failure risk status differentiation via the selected type of notification.

公开(公告)号：US10413207B2

公开(公告)日：2019-09-17

申请号：US15081216

申请日：2016-03-25

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Michael Hudziak ,  Jerry Reiland ,  Erin Reisfeld

IPC: A61N1/39 ,  A61B5/0464 ,  A61B5/04 ,  A61B5/042 ,  A61B5/0456 ,  A61N1/365 ,  A61B5/00 ,  A61B5/0432 ,  A61B5/0468

Abstract: A system and method for detecting and verifying bradycardia/asystole episodes includes sensing an electrogram (EGM) signal. The EGM signal is compared to a primary threshold to sense events in the EGM signal, and at least one of a bradycardia or an asystole is detected based on the comparison. In response to detecting at least one of a bradycardia or an asystole, the EGM signal is compared to a secondary threshold to sense events under-sensed by the primary threshold. The validity of the bradycardia or the asystole is determined based on the detected under-sensed events.

公开(公告)号：US20180126172A1

公开(公告)日：2018-05-10

申请号：US15850024

申请日：2017-12-21

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Douglas A. Hettrick ,  Amul Y. Desai ,  Randolph M. Biallas ,  Holly S. Vitense ,  Jodi L. Redemske

IPC: A61N1/365 ,  A61M5/172 ,  A61M5/142 ,  A61N1/39

CPC classification number: A61N1/36585 ,  A61B5/02405 ,  A61B5/0245 ,  A61B5/0452 ,  A61B5/0537 ,  A61B5/0538 ,  A61B5/4848 ,  A61B5/686 ,  A61B5/7264 ,  A61B5/7275 ,  A61B5/742 ,  A61M5/14276 ,  A61M5/1723 ,  A61M2230/30 ,  A61M2230/65 ,  A61N1/3627 ,  A61N1/3629 ,  A61N1/36521 ,  A61N1/36564 ,  A61N1/36592 ,  A61N1/3956 ,  G16H50/20 ,  G16H50/30

Abstract: Techniques for using multiple physiological parameters to provide an early warning for worsening heart failure are described. A system is provided that monitors a multiple diagnostic parameters indicative of worsening heart failure. The parameters preferably include are least one parameter acquired from an implanted device, such as intrathoracic impedance. The system device derives an index of the likelihood of worsening heart failure based upon the parameters using a Bayesian approach and displays the resultant index for review by a physician.

公开(公告)号：US09901276B2

公开(公告)日：2018-02-27

申请号：US14926455

申请日：2015-10-29

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar

IPC: A61B5/00 ,  A61B5/046 ,  A61B5/04 ,  A61B5/042 ,  A61B5/0452 ,  A61B5/0456 ,  A61N1/362 ,  A61N1/365 ,  A61N1/39 ,  A61B5/0464

CPC classification number: A61B5/046 ,  A61B5/04 ,  A61B5/04012 ,  A61B5/04014 ,  A61B5/04017 ,  A61B5/0422 ,  A61B5/0452 ,  A61B5/0456 ,  A61B5/0464 ,  A61B5/686 ,  A61N1/3624 ,  A61N1/36507 ,  A61N1/36592 ,  A61N1/395 ,  A61N1/3987

Abstract: A cardiac monitoring device for determining the occurrence of a sick sinus syndrome condition of a patient that includes a plurality of electrodes to sense a cardiac signal, a sensing module electrically coupled to the plurality of electrodes having circuitry positioned therein to receive the sensed cardiac signal, and a processor coupled to the sensing module and configured to determine an RR interval variability during an RR interval variability session in response to the sensed cardiac signal, determine whether a P-wave occurs during the RR interval variability session, determine whether a sick sinus indicator is satisfied in response to a P-wave occurring, increment a sick sinus count in response to the sick sinus indicator being satisfied, determine whether a sick sinus burden is satisfied in response to the sick sinus count being incremented, and determine the occurrence of sick sinus syndrome in response to the sick sinus burden being satisfied.