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31.发明授权公开(公告)号：US11135441B2
公开(公告)日：2021-10-05
申请号：US16449883
申请日：2019-06-24
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang , Paul J. DeGroot
Abstract: A cardiac medical system, such as an implantable cardioverter defibrillator (ICD) system, receives a cardiac electrical signal by and senses cardiac events when the signal crosses an R-wave sensing threshold. The system determines at least one sensed event parameter from the cardiac electrical signal for consecutive cardiac events sensed by the sensing circuit and compares the sensed event parameters to P-wave oversensing criteria. The system detects P-wave oversensing in response to the sensed event parameters meeting the P-wave oversensing criteria; and adjusts at least one of an R-wave sensing control parameter or a therapy delivery control parameter in response to detecting the P-wave oversensing.
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公开(公告)号：US20210299444A1
公开(公告)日：2021-09-30
申请号：US17345627
申请日：2021-06-11
Applicant: Medtronic, Inc.
Inventor： Saul E. Greenhut , Robert J. Nehls , Walter H. Olson , Xusheng Zhang , Wade M. Demmer , Troy E. Jackson , James D. Reinke
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.
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公开(公告)号：US20210170170A1
公开(公告)日：2021-06-10
申请号：US17109968
申请日：2020-12-02
Applicant: Medtronic, Inc.
Inventor： Gavin M. Mischler , Yuanzhen Liu , Saul E. Greenhut , Xusheng Zhang
Abstract: A medical device is configured to detect an alternating pattern of signal features determined from consecutive segments of a cardiac electrical signal and determine a gross morphology metric from at least one segment of the cardiac electrical signal. The device is configured to detect cardiac event oversensing in response to detecting the alternating pattern and the gross morphology metric not meeting tachyarrhythmia morphology criteria. The medical device may withhold detecting an arrhythmia in response to detecting the cardiac event oversensing.
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公开(公告)号：US20190381315A1
公开(公告)日：2019-12-19
申请号：US16551412
申请日：2019-08-26
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang , Jeffrey M. Gillberg , Thomas J. Mullen
Abstract: A medical device system and associated method predict a patient response to a cardiac therapy. The system includes for delivering cardiac pacing pulses to a patient's heart coupled to a cardiac sensing module and a cardiac pacing module for generating cardiac pacing pulses and controlling delivery of the pacing pulses at multiple pace parameter settings. An acoustical sensor obtains heart sound signals. A processor is enabled to receive the heart sound signals, derive a plurality of heart sound signal parameters from the heart sound signals, and determine a trend of each of the plurality of heart sound signal parameters with respect to the plurality of pace parameter settings. An external display is configured to present the trend of at least one heart sound parameter with respect to the plurality of pace parameter settings.
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公开(公告)号：US10391316B2
公开(公告)日：2019-08-27
申请号：US15589868
申请日：2017-05-08
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang , Jeffrey M Gillberg , Thomas J Mullen
Abstract: A medical device system and associated method predict a patient response to a cardiac therapy. The system includes for delivering cardiac pacing pulses to a patient's heart coupled to a cardiac sensing module and a cardiac pacing module for generating cardiac pacing pulses and controlling delivery of the pacing pulses at multiple pace parameter settings. An acoustical sensor obtains heart sound signals. A processor is enabled to receive the heart sound signals, derive a plurality of heart sound signal parameters from the heart sound signals, and determine a trend of each of the plurality of heart sound signal parameters with respect to the plurality of pace parameter settings. An external display is configured to present the trend of at least one heart sound parameter with respect to the plurality of pace parameter settings.
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Patent Agency Ranking
公开(公告)号：US10265536B2
公开(公告)日：2019-04-23
申请号：US15270985
申请日：2016-09-20
Applicant: Medtronic, Inc.
Inventor： Robert W. Stadler , Raja N. Ghanem , Xusheng Zhang
IPC: A61N1/39 , A61N1/362 , A61B5/0468 , A61B5/00 , A61B5/046 , A61B5/0464 , A61N1/05 , A61B5/04 , A61B5/0456 , A61B5/042
Abstract: A method and system for use with an implantable medical device for subcutaneous implant within a patient to determine a likelihood of the patient experiencing a cardiac event that includes sensing a cardiac signal along a plurality of different sensing vectors, determining state information of each vector of the plurality of sensing vectors, determining a cross correlation of the determined state information of each vector of the plurality of sensing vectors, comparing the cross correlation of the determined state information of each vector of the plurality of sensing vectors to a threshold, and detecting the cardiac event in response to the comparing.
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公开(公告)号：US10244957B2
公开(公告)日：2019-04-02
申请号：US14339980
申请日：2014-07-24
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang
IPC: A61B5/04 , A61B5/0408 , A61B5/00 , A61B5/0452 , A61B5/0456 , A61N1/362 , A61N1/39
Abstract: A method and medical device for determining sensing vectors that includes sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a plurality of sensing vectors, determining a sensing vector metric in response to the sensed cardiac signals, determining a morphology metric associated with a morphology of the sensed cardiac signals, determining vector selection metrics in response to the determined sensing vector metric and the determined morphology setting, and selecting a sensing vector of the plurality of sensing vectors in response to the determined vector selection metrics.
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公开(公告)号：US10226197B2
公开(公告)日：2019-03-12
申请号：US14687053
申请日：2015-04-15
Applicant: Medtronic, Inc.
Inventor： James D. Reinke , Xusheng Zhang , Vinod Sharma , Vladimir P. Nikolski , Michael B. Terry , Scott A. Hareland , Daniel L. Hansen , Donna M. Salmi
IPC: A61B5/04 , A61B5/0464 , A61B5/00 , A61N1/37 , A61N1/39
Abstract: In situations in which an implantable medical device (e.g., a subcutaneous ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the subcutaneous ICD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the ICD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the ICD includes a first pace pulse detector configured to obtain a sensed electrical signal and analyze the sensed electrical signal to detect a first type of pulses having a first set of characteristics and a second pace pulse detector configured to obtain the sensed electrical signal and analyze the sensed electrical signal to detect a second type of pulses having a second set of characteristics.
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公开(公告)号：US10154794B2
公开(公告)日：2018-12-18
申请号：US14687010
申请日：2015-04-15
Applicant: Medtronic, Inc.
Inventor： Robert W. Stadler , Xusheng Zhang , Vinod Sharma , James D. Reinke , Barbara J. Schmid
Abstract: An implantable medical device comprises a sensing module configured to obtain electrical signals from one or more electrodes and a control module configured to process the electrical signals from the sensing module in accordance with a tachyarrhythmia detection algorithm to monitor for a tachyarrhythmia. The control module detects initiation of a pacing train delivered by a second implantable medical device, determines a type of the detected pacing train, and modifies the tachyarrhythmia detection algorithm based on the type of the detected pacing train.
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公开(公告)号：US09956423B2
公开(公告)日：2018-05-01
申请号：US15140802
申请日：2016-04-28
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang , Jian Cao , Saul E. Greenhut , Robert W. Stadler
IPC: A61N1/39 , A61B5/042 , A61B5/0464
CPC classification number: A61N1/3987 , A61B5/042 , A61B5/0464 , A61N1/3925 , A61N1/3956
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.
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