Method and device for electrogram based estimation of QRS duration

    公开(公告)号:US11123006B2

    公开(公告)日:2021-09-21

    申请号:US16752839

    申请日:2020-01-27

    申请人: Pacesetter, Inc.

    IPC分类号: A61N1/368 A61B5/366 A61B5/352

    摘要: Methods and devices are provided that collect intra-cardiac electrogram (EGM) signals over first and second sensing channels (channel-1 and channel-2 EGM signals, respectively) associated with an event of interest that includes a right ventricle (RV) and a left ventricle (LV), determine first, second and third global characteristics (GC) from the channel-1 and channel-2 EGM signals, and define a QRS start time within at least one of the EGM signals; and determine a threshold crossing. The methods and systems compare at least one of the first, second and third GC to the threshold crossing, select one of the first, second and third GC based on the comparing; defining a QRS end time, within at least one of the channel-1 and channel-2 EGM signals based on the one of the first, second and third GC selected, and calculate a QRS duration based on the QRS start time and QRS end time.

    METHOD AND DEVICE FOR DISCRIMINATION OF LEFT VENTRICULAR PSEUDO-FUSION PACING

    公开(公告)号:US20200147395A1

    公开(公告)日:2020-05-14

    申请号:US16740547

    申请日:2020-01-13

    申请人: Pacesetter, Inc.

    摘要: Methods and devices are provided for, under control of one or more processors within an implantable medical device (IMD), delivering cardiac resynchronization therapy (CRT) at one or more pacing sites. The processors obtain cardiac signals, associated with a candidate beat, from multi-site left ventricular (MSLV) electrodes distributed along a left ventricle and analyze the cardiac signals to collect at least one of a MSLV conduction pattern or a MSLV morphology. The processors compare at least one of the MSLV conduction pattern or MSLV morphology to one or more associated templates. The processors then label the candidate beat as a pseudo-fusion beat based on the comparing and adjust the CRT based on the labeling.

    Method and device for discrimination of left ventricular pseudo-fusion pacing

    公开(公告)号:US11207525B2

    公开(公告)日:2021-12-28

    申请号:US16740547

    申请日:2020-01-13

    申请人: Pacesetter, Inc.

    摘要: Methods and devices are provided for, under control of one or more processors within an implantable medical device (IMD), delivering cardiac resynchronization therapy (CRT) at one or more pacing sites. The processors obtain cardiac signals, associated with a candidate beat, from multi-site left ventricular (MSLV) electrodes distributed along a left ventricle and analyze the cardiac signals to collect at least one of a MSLV conduction pattern or a MSLV morphology. The processors compare at least one of the MSLV conduction pattern or MSLV morphology to one or more associated templates. The processors then label the candidate beat as a pseudo-fusion beat based on the comparing and adjust the CRT based on the labeling.

    Method and device for electrogram based estimation of QRS duration

    公开(公告)号:US10582874B2

    公开(公告)日:2020-03-10

    申请号:US15851342

    申请日:2017-12-21

    申请人: PACESETTER, INC.

    摘要: Methods and devices are provided comprising an implantable lead having electrodes configured to be located proximate to a heart, the electrodes defining a sensing vector through a region of interest in the heart. The method and system collect an intra-cardiac electrogram (EGM) signal associated with an event of interest and determining an global amplitude characteristic (GAC) and a global slope characteristic (GSC) from the EGM signal under control of one or more processors within an implantable medical device (IMD). A QRS start time is defined, within the EGM signal, based on the GSC and determining a local amplitude characteristic (LAC) for a segment of the EGM signal within a search window of the GAC under control of one or more processors within an implantable medical device (IMD) A QRS end time is defined, within the EGM signal, based on the LAC; and calculating a QRS duration based on the QRS start time and QRS end time under control of one or more processors within an implantable medical device (IMD).

    METHOD AND DEVICE FOR ELECTROGRAM BASED ESTIMATION OF QRS DURATION

    公开(公告)号:US20200155029A1

    公开(公告)日:2020-05-21

    申请号:US16752839

    申请日:2020-01-27

    申请人: Pacesetter, Inc.

    摘要: Methods and devices are provided that collect intra-cardiac electrogram (EGM) signals over first and second sensing channels (channel-1 and channel-2 EGM signals, respectively) associated with an event of interest that includes a right ventricle (RV) and a left ventricle (LV), determine first, second and third global characteristics (GC) from the channel-1 and channel-2 EGM signals, and define a QRS start time within at least one of the EGM signals; and determine a threshold crossing. The methods and systems compare at least one of the first, second and third GC to the threshold crossing, select one of the first, second and third GC based on the comparing; defining a QRS end time, within at least one of the channel-1 and channel-2 EGM signals based on the one of the first, second and third GC selected, and calculate a QRS duration based on the QRS start time and QRS end time.

    Method and device for discrimination of left ventricular pseudo-fusion pacing

    公开(公告)号:US10569091B2

    公开(公告)日:2020-02-25

    申请号:US15851372

    申请日:2017-12-21

    申请人: PACESETTER, INC.

    摘要: Methods and devices are provided for, under control of one or more processors within an implantable medical device (IMD), delivering cardiac resynchronization therapy (CRT) at one or more pacing sites. The processors obtain cardiac signals, associated with a candidate beat, from multi-site left ventricular (MSLV) electrodes distributed along a left ventricle and analyze the cardiac signals to collect at least one of a MSLV conduction pattern or a MSLV morphology. The processors compare at least one of the MSLV conduction pattern or MSLV morphology to one or more associated templates. The processors then label the candidate beat as a pseudo-fusion beat based on the comparing and adjust the CRT based on the labeling.

    METHOD AND DEVICE FOR ELECTROGRAM BASED ESTIMATION OF QRS DURATION

    公开(公告)号:US20190192028A1

    公开(公告)日:2019-06-27

    申请号:US15851342

    申请日:2017-12-21

    申请人: PACESETTER, INC.

    IPC分类号: A61B5/0472 A61B5/04

    摘要: Methods and devices are provided comprising an implantable lead having electrodes configured to be located proximate to a heart, the electrodes defining a sensing vector through a region of interest in the heart. The method and system collect an intra-cardiac electrogram (EGM) signal associated with an event of interest and determining an global amplitude characteristic (GAC) and a global slope characteristic (GSC) from the EGM signal under control of one or more processors within an implantable medical device (IMD). A QRS start. time is defined, within the EGM signal, based on the GSC and determining a local amplitude characteristic (LAC) for a segment of the EGM signal within a search window of the GAC under control of one or more processors within an implantable medical device (IMD) A QRS end time is defined, within the EGM signal, based on the LAC; and calculating a QRS duration based on the QRS start time and QRS end time under control of one or more processors within an implantable medical device (IMD).