公开(公告)号：US12251231B2

公开(公告)日：2025-03-18

申请号：US18061878

申请日：2022-12-05

Applicant: Medtronic, Inc.

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

IPC: A61B5/361 ,  A61B5/00 ,  A61B5/24 ,  A61B5/316 ,  A61B5/349 ,  A61B5/352 ,  A61N1/362 ,  A61N1/365 ,  A61N1/39 ,  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：US20250032052A1

公开(公告)日：2025-01-30

申请号：US18783886

申请日：2024-07-25

Applicant: Medtronic, Inc.

Inventor： Neethu Lekshmi Vasudevan Jalaja ,  Shantanu Sarkar ,  Bruce D. Gunderson

IPC: A61B5/00 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/11 ,  A61B5/283

Abstract: A system includes an implantable medical device that includes an accelerometer sensing circuitry. Responsive to one or more of a first signal from the accelerometer satisfying a first threshold or a first heart rate determined from a first set of cardiac activity data satisfying a first heart rate threshold, processing circuitry of the system determines a first posture state based on the first signal. Responsive to one or more of a second signal satisfying a second threshold or a second heart rate determined from a second set of cardiac activity data satisfying a second heart rate threshold, the processing circuitry determines a second posture state based on the second signal. The processing circuitry determines a heart failure risk based on the first posture state and the second posture state and generates output based at least in part on the heart failure risk.

公开(公告)号：US12178566B2

公开(公告)日：2024-12-31

申请号：US17101945

申请日：2020-11-23

Applicant: Medtronic, Inc.

Inventor： David A Anderson ,  James H Borowick ,  Hyun J. Yoon ,  Jon E. Thissen ,  Shantanu Sarkar ,  Ashley L Galarneau ,  Jason C. Lee

IPC: A61B5/06 ,  A61B5/283 ,  A61B5/339

Abstract: This disclosure is directed to techniques for detecting and mitigating inaccurate sensing in a medical system. In some examples, one or more sensors of the medical system may include at least one electrode configured to sense an impedance of a portion of a patient's body proximate to the electrode and processing circuitry of the medical system may detect an inaccuracy in the data corresponding to the one or more patient physiological parameters based upon data including at least the sensed impedance of the portion of the patient body; correct at least a portion of the inaccuracy in the data corresponding to the one or more patient physiological parameters; and generate, for display on a display device, output data indicating the inaccuracy in the data corresponding to the one or more patient physiological parameters.

公开(公告)号：US20240277236A1

公开(公告)日：2024-08-22

申请号：US18652729

申请日：2024-05-01

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Eric M. Christensen ,  Deborah Ann Jaye ,  Niranjan Chakravarthy ,  Geert Morren ,  Jerry D. Reiland

IPC: A61B5/0205 ,  A61B5/00 ,  A61B5/024 ,  A61B5/08 ,  A61B5/11 ,  A61B5/364

CPC classification number: A61B5/0205 ,  A61B5/1118 ,  A61B5/364 ,  A61B5/4561 ,  A61B5/024 ,  A61B5/0809 ,  A61B5/0816 ,  A61B2562/0204

Abstract: This disclosure is directed to devices, systems, and techniques for identifying a respiration rate based on an impedance signal. In some examples, a medical device system includes a medical device including a plurality of electrodes. The medical device is configured to perform, using the plurality of electrodes, an impedance measurement to collect a set of impedance values, where the set of impedance values is indicative of a respiration pattern of a patient. Additionally, the medical device system includes processing circuitry configured to identify a set of positive zero crossings based on the set of impedance values, identify a set of negative zero crossings based on the set of impedance values, and determine, for the impedance measurement, a value of a respiration metric using both the set of negative zero crossings and the set of positive zero crossings.

公开(公告)号：US20240206798A1

公开(公告)日：2024-06-27

申请号：US18538473

申请日：2023-12-13

Applicant: Medtronic, Inc.

Inventor： Gautham Rajagopal ,  Shantanu Sarkar

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

CPC classification number: A61B5/352 ,  A61B5/355 ,  A61B5/36 ,  A61B5/7203 ,  A61B2560/02

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：US11918367B2

公开(公告)日：2024-03-05

申请号：US18164759

申请日：2023-02-06

Applicant: Medtronic, Inc.

Inventor： Gautham Rajagopal ,  Shantanu Sarkar

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

CPC classification number: A61B5/352 ,  A61B5/355 ,  A61B5/36 ,  A61B5/7203 ,  A61B2560/02

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：US11911177B2

公开(公告)日：2024-02-27

申请号：US16918555

申请日：2020-07-01

Applicant: Medtronic, Inc.

Inventor： Ekaterina M. Ippolito ,  Shantanu Sarkar ,  Eduardo N. Warman ,  Joel R. Lauer

IPC: A61B5/00 ,  G16H40/60 ,  A61B5/0205 ,  A61B5/361 ,  A61B5/024 ,  A61B5/053 ,  A61B5/08

CPC classification number: A61B5/4848 ,  A61B5/0205 ,  A61B5/4842 ,  A61B5/686 ,  A61B5/7275 ,  G16H40/60 ,  A61B5/024 ,  A61B5/053 ,  A61B5/0816 ,  A61B5/361

Abstract: This disclosure is directed to devices, systems, and techniques for determining an efficacy of a treatment program. For example, a medical device system includes a medical device including one or more sensors configured to generate a signal that indicates a parameter of a patient. Additionally, the medical device system includes processing circuitry configured to receive data indicative of a user selection of a reference time; determine a plurality of parameter values of the parameter based on a portion of the signal corresponding to a period of time including the reference time. Additionally, the processing circuitry is configured to identify, based on a first set of parameter values, a reference parameter value, calculate a parameter change value, and determine, based on the parameter change value, whether an improvement or a worsening of the patient has occurred responsive to a treatment administered beginning at the reference time.

公开(公告)号：US20230346287A1

公开(公告)日：2023-11-02

申请号：US18348040

申请日：2023-07-06

Applicant: Medtronic, Inc.

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

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

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

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：US11723537B2

公开(公告)日：2023-08-15

申请号：US16719665

申请日：2019-12-18

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Jodi L. Redemske ,  Eduardo N. Warman ,  Douglas A. Hettrick ,  Kevin T. Ousdigian

IPC: A61B5/00 ,  G16H50/30 ,  G16H40/40 ,  G16H40/67

CPC classification number: A61B5/0006 ,  A61B5/0004 ,  A61B5/7275 ,  G16H40/40 ,  G16H40/67 ,  G16H50/30

Abstract: Techniques for transmitting diagnostic information stored in an implantable medical device (IMD) based on patient hospitalization are described. For example, the IMD may transmit higher resolution diagnostic information to a clinician and/or an external device during a hospitalization period to aid the clinician in evaluating heart failure treatment and when discharge is proper. This higher resolution diagnostic information may include one or more patient metrics automatically generated and transmitted by the IMD at least once every two hours. During a post-hospitalization period, the IMD may transmit lower resolution diagnostic information to a clinician that indicates a risk level of re-hospitalization. The lower resolution diagnostic information may include the risk level and/or patient metrics once a day, for example. In this manner, the IMD transmitted diagnostic information may be tailored to the specific heart failure monitoring needed by the patient.

公开(公告)号：US20220193419A1

公开(公告)日：2022-06-23

申请号：US17690723

申请日：2022-03-09

Applicant: Medtronic, Inc.

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

IPC: A61N1/365 ,  A61B5/024 ,  A61B5/0245 ,  A61B5/00 ,  A61B5/0537 ,  G16H50/20 ,  G16H50/30 ,  A61B5/349 ,  A61B5/0538 ,  A61N1/362 ,  A61M5/142 ,  A61M5/172 ,  A61N1/39

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.