公开(公告)号：US20210369167A1

公开(公告)日：2021-12-02

申请号：US17401054

申请日：2021-08-12

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Douglas A. Hettrick ,  Robert W. Stadler

IPC: A61B5/287 ,  A61B5/0537 ,  A61B5/0538 ,  A61B5/11 ,  A61N1/365 ,  A61B5/361 ,  A61B5/363 ,  A61M37/00 ,  A61B5/0205 ,  A61B5/021 ,  A61B5/08 ,  A61M5/172

Abstract: Techniques for using multiple physiological parameters to provide an early warning for worsening heart failure are described. A medical device monitors a primary diagnostic parameter that is indicative of worsening heart failure, such as intrathoracic impedance or pressure, and one or more secondary diagnostic parameters. The medical device detects worsening heart failure in the patient based on the primary diagnostic parameter when an index that is changed over time based on the primary diagnostic parameter value is outside a range of values, termed the threshold zone. When the index is within the threshold zone, the medical device detects worsening heart failure in the patient based on the one or more secondary diagnostic parameters. Upon detecting worsening heart failure, the medical device may, for example, provide an alert that enables the patient to seek medical attention before experiencing a heart failure event.

公开(公告)号：US20210307668A1

公开(公告)日：2021-10-07

申请号：US17208480

申请日：2021-03-22

Applicant: Medtronic, Inc.

Inventor： Gautham Rajagopal ,  Shantanu Sarkar

IPC: A61B5/352 ,  A61B5/355 ,  A61B5/36 ,  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：US20210093220A1

公开(公告)日：2021-04-01

申请号：US17021564

申请日：2020-09-15

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Todd M. Zielinski ,  Brian B. Lee ,  Val D. Eisele, III ,  Eduardo N. Warman ,  Matthew T Reinke ,  Ekaterina M. Ippolito

IPC: A61B5/053 ,  A61B5/029 ,  A61B5/06 ,  A61B5/00 ,  A61B5/0402

Abstract: Techniques for obtaining impedance data to provide an early warning for heart failure decompensation are described. An example device may be configured to measure subcutaneous impedance values, and increment an impedance score. In some examples, the device may use an adaptive threshold and fluid index in incrementing the impedance score. In some examples, the impedance score is compared to a threshold to determine a heart failure status of a patient. In some examples, may cause resets in fluid index values and/or determine positions or orientations of the device when determining the impedance score.

公开(公告)号：US10537266B2

公开(公告)日：2020-01-21

申请号：US15589825

申请日：2017-05-08

Applicant: Medtronic, Inc.

Inventor： Todd M Zielinski ,  Douglas A Hettrick ,  Shantanu Sarkar

IPC: A61B5/00 ,  A61B5/08 ,  A61B5/053 ,  A61N1/365

Abstract: A system and method is provided to measure intrathoracic complex impedance and to identify and indicate disease conditions based on the impedance measurements. Multiple impedance vectors may be taken into account, and an optimal vector may be selected to provide the most useful impedance measurement for the identification and indication of disease conditions.

公开(公告)号：US09936890B2

公开(公告)日：2018-04-10

申请号：US14926419

申请日：2015-10-29

Applicant: Medtronic, Inc.

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

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

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

Abstract: An implantable medical device and method for determining an atrial arrhythmia event that includes a cardiac sensing device comprising a housing having circuitry positioned therein, a plurality of electrodes electrically coupled to the circuitry to sense a cardiac signal, and a processor configured to generate an initial detection of an atrial arrhythmia event in response to an atrial arrhythmia threshold, determine whether a P-wave occurs during the initial detection, determine an adaptive threshold in response to the P-wave being detected, adjust the atrial arrhythmia threshold in response to the adaptive threshold, and generate a subsequent initial detection of an atrial arrhythmia event using the adjusted atrial arrhythmia threshold.

公开(公告)号：US20170360320A1

公开(公告)日：2017-12-21

申请号：US15676567

申请日：2017-08-14

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Douglas A. Hettrick ,  Robert W. Stadler

IPC: A61B5/042 ,  A61B5/11 ,  A61B5/046 ,  A61M5/172 ,  A61B5/0205 ,  A61B5/08 ,  A61N1/365 ,  A61B5/021

CPC classification number: A61B5/0422 ,  A61B5/0205 ,  A61B5/021 ,  A61B5/046 ,  A61B5/0464 ,  A61B5/0537 ,  A61B5/0538 ,  A61B5/08 ,  A61B5/1118 ,  A61B2562/0219 ,  A61M5/1723 ,  A61M37/00 ,  A61M2230/04 ,  A61M2230/42 ,  A61N1/36585

Abstract: Techniques for using multiple physiological parameters to provide an early warning for worsening heart failure are described. A medical device monitors a primary diagnostic parameter that is indicative of worsening heart failure, such as intrathoracic impedance or pressure, and one or more secondary diagnostic parameters. The medical device detects worsening heart failure in the patient based on the primary diagnostic parameter when an index that is changed over time based on the primary diagnostic parameter value is outside a range of values, termed the threshold zone. When the index is within the threshold zone, the medical device detects worsening heart failure in the patient based on the one or more secondary diagnostic parameters. Upon detecting worsening heart failure, the medical device may, for example, provide an alert that enables the patient to seek medical attention before experiencing a heart failure event.

公开(公告)号：US09730601B2

公开(公告)日：2017-08-15

申请号：US14629027

申请日：2015-02-23

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Douglas A Hettrick ,  Robert W Stadler

IPC: A61N1/365 ,  A61B5/042 ,  A61B5/0205 ,  A61B5/021 ,  A61M5/172 ,  A61B5/08 ,  A61B5/046 ,  A61B5/11

CPC classification number: A61B5/0422 ,  A61B5/0205 ,  A61B5/021 ,  A61B5/046 ,  A61B5/0464 ,  A61B5/0537 ,  A61B5/0538 ,  A61B5/08 ,  A61B5/1118 ,  A61B2562/0219 ,  A61M5/1723 ,  A61M37/00 ,  A61M2230/04 ,  A61M2230/42 ,  A61N1/36585

Abstract: Techniques for using multiple physiological parameters to provide an early warning for worsening heart failure are described. A medical device monitors a primary diagnostic parameter that is indicative of worsening heart failure, such as intrathoracic impedance or pressure, and one or more secondary diagnostic parameters. The medical device detects worsening heart failure in the patient based on the primary diagnostic parameter when an index that is changed over time based on the primary diagnostic parameter value is outside a range of values, termed the threshold zone. When the index is within the threshold zone, the medical device detects worsening heart failure in the patient based on the one or more secondary diagnostic parameters. Upon detecting worsening heart failure, the medical device may, for example, provide an alert that enables the patient to seek medical attention before experiencing a heart failure event.

公开(公告)号：US09675270B2

公开(公告)日：2017-06-13

申请号：US15133354

申请日：2016-04-20

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar

IPC: A61B5/00 ,  A61B5/0468 ,  A61B5/0456 ,  A61B5/042 ,  A61B5/04

CPC classification number: A61B5/0468 ,  A61B5/04012 ,  A61B5/0422 ,  A61B5/0456 ,  A61B5/686

Abstract: A method and medical monitoring device for determining the occurrence of a premature ventricular contraction that includes sensing a cardiac signal and determining R-waves in response to the sensed cardiac signal, determining RR intervals between the determined R-waves, determining whether a first interval criteria is satisfied in response to the determined intervals, determining a correlation between the determined R-waves, determining whether a first correlation criteria is satisfied in response to the determined correlation, and determining the premature ventricular contraction is occurring in response to the first interval criteria and the first correlation criteria being satisfied.

公开(公告)号：US09675269B2

公开(公告)日：2017-06-13

申请号：US14695171

申请日：2015-04-24

Applicant: Medtronic, Inc.

Inventor： Shantanu Sarkar ,  Daniel L Hansen ,  Grant A Neitzell

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

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

Abstract: A method and implantable medical device for determining noise in response to a cardiac signal that includes sensing the cardiac signal, determining a sensing window in response to the sensed cardiac signal, the sensing window comprising a first portion and a second portion, determining a first derivative signal in response to the sensed cardiac signal within only one of the first portion and the second portion of the sensing window, determining a second derivative signal in response to the sensed cardiac signal within the one of the first portion and the second portion of the sensing window, determining whether an amplitude of the second derivative signal satisfies an amplitude threshold, and determining noise in response to the amplitude of the second derivative signal satisfying the amplitude threshold.

公开(公告)号：US20160331977A1

公开(公告)日：2016-11-17

申请号：US15219595

申请日：2016-07-26

Applicant: Medtronic, Inc.

Inventor： Douglas A. Hettrick ,  Todd M. Zielinski ,  Eduardo Warman ,  Shantanu Sarkar

IPC: A61N1/365 ,  A61N1/362 ,  A61B5/00 ,  A61B5/053 ,  A61B5/0452 ,  A61N1/368 ,  A61N1/39

CPC classification number: A61N1/36521 ,  A61B5/0452 ,  A61B5/0535 ,  A61B5/7239 ,  A61N1/3627 ,  A61N1/3682 ,  A61N1/3684 ,  A61N1/3987

Abstract: Methods and/or devices are disclosed herein for monitoring cardiac impedance signal and delivering therapy to a patient's heart based upon the monitored cardiac impedance.

Abstract translation: 本文公开了用于监测心脏阻抗信号并基于所监测的心脏阻抗将治疗递送到患者心脏的方法和/或装置。