-
公开(公告)号:US11278232B2
公开(公告)日:2022-03-22
申请号:US16297029
申请日:2019-03-08
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Amy Jean Brisben , Venugopal Allavatam , Krzysztof Z. Siejko , Deepa Mahajan , Kevin G. Wika , Keith L. Herrmann , Stephen J. Hahn
IPC: A61B5/341 , A61B5/00 , A61N1/39 , A61N1/05 , A61B5/287 , A61B5/316 , A61B5/318 , A61B5/349 , A61B5/352 , A61B5/364 , A61N1/362 , A61N1/04 , A61N1/365 , A61N1/37 , A61B5/024 , A61B5/0245 , A61B5/35 , A61B5/283 , A61B5/327 , A61B5/366
Abstract: New and alternative approaches to the monitoring of cardiac signal quality for external and/or implantable cardiac devices. In one example, signal quality is monitored continuously or in response to a triggering event or condition and, upon identification of a reduction in signal quality, a device may reconfigure its sensing state. In another example, one or more trends of signal quality are monitored by a device, either continuously or in response to a triggering event or condition, and sensing reconfiguration may be performed in response to identified trends and events. In yet another example, a device may use a looping data capture mode to track sensing data in multiple vectors while primarily relying on less than all sensing vectors to make decisions and, in response to a triggering event or condition, the looped data can be analyzed automatically, without waiting for additional data capture to reconfigure sensing upon identification of the triggering event or condition. In another example a device calculates a composite cardiac cycle by overlaying signal morphology for a number of cardiac cycles and analyzes the composite cardiac cycle to calculate signal quality metrics.
-
公开(公告)号:US10426405B2
公开(公告)日:2019-10-01
申请号:US15362859
申请日:2016-11-29
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Krzysztof Z. Siejko , Amy Jean Brisben , Stephen J. Hahn , Keith L. Herrmann , Venugopal Allavatam
IPC: A61B5/00 , A61B5/021 , A61B5/04 , A61B5/0404 , A61N1/39 , A61B5/0452 , A61B5/11 , A61B5/1455 , A61B7/04 , A61N1/365 , A61B5/0205 , A61B5/042 , A61B5/0456 , A61B5/0245 , A61B5/024 , A61N1/37
Abstract: In some examples, cardiac cycle detection may be used as a more or less default approach to cardiac activity tracking. Additional rate measurement relying on different sources or analyses may require extra power consumption over the cycle detection methods. Therefore, new methods and devices are disclosed that selectively activate a second cardiac rate measurement when needed. In some illustrative methods and devices, decisions are made as to whether and which previously collected data, if any, is to be discarded, replaced, or corrected upon activation of the second cardiac rate measurement.
-
公开(公告)号:US20170113040A1
公开(公告)日:2017-04-27
申请号:US15297588
申请日:2016-10-19
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Amy Jean Brisben , Venugopal Allavatam , Krzysztof Z. Siejko , Deepa Mahajan , Kevin G. Wika , Keith L. Herrmann , Stephen J. Hahn
IPC: A61N1/362 , A61B5/0452
CPC classification number: A61N1/36514 , A61B5/02416 , A61B5/0245 , A61B5/04011 , A61B5/04012 , A61B5/04017 , A61B5/0402 , A61B5/04028 , A61B5/042 , A61B5/0422 , A61B5/0452 , A61B5/04525 , A61B5/0456 , A61B5/0468 , A61B5/0472 , A61B5/686 , A61B5/6869 , A61B5/72 , A61B5/7203 , A61B5/7221 , A61N1/046 , A61N1/05 , A61N1/0563 , A61N1/3622 , A61N1/3625 , A61N1/3704 , A61N1/3925 , A61N1/3956 , A61N1/3987
Abstract: Methods and devices for combining multiple signals from multiple sensing vectors for use in wearable or implantable cardiac devices. Signals from multiple vectors may be combined using weighting factors and/or by conversion to different coordinate systems than the original inputs, which may or may not be normalized to patient anatomy. Signals from multiple sensing vectors may be combined prior to or after several analytical steps or processes including before or after filtering, and before or after cardiac cycle detection. Cardiac cycle detection information may be combined across multiple sensing vectors before or after analysis of individual vectors for noise or overdetection. Cardiac cycle detection information may also be combined across multiple sensing vectors to identify noise and/or overdetection.
-
公开(公告)号:US12076574B2
公开(公告)日:2024-09-03
申请号:US17496511
申请日:2021-10-07
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Venugopal Allavatam , Benjamin Speakman , Leanne M. Eberle
IPC: A61N1/39
CPC classification number: A61N1/3987 , A61N1/3956 , A61N1/3981
Abstract: Wearable, automatic external, and implantable defibrillators, as well as methods of operation in such systems, are disclosed with shock delivery mitigations to avoid delivering a defibrillation shock on a T-wave. Prior to issuance of a defibrillation shock, one or more detected cardiac events are analyzed to characterize a detected event that is sensed for purposes of synchronizing the defibrillation shock. The detected event can be characterized as an R-wave or a T-wave, and the shock delivery protocol is then selected based on the characterization of the detected event to avoid shock-on-T and potential pro-arrhythmia.
-
公开(公告)号:US11950915B2
公开(公告)日:2024-04-09
申请号:US17116819
申请日:2020-12-09
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Venugopal Allavatam , Stephen J. Hahn , Keith L. Herrmann , Mitchell D. Lanz , Krzysztof Z. Siejko , Benjamin Speakman
IPC: A61B5/316 , A61B5/00 , A61B5/287 , A61B5/30 , A61B5/304 , A61B5/349 , A61B5/352 , A61N1/362 , A61N1/37 , A61N1/39
CPC classification number: A61B5/316 , A61B5/287 , A61B5/30 , A61B5/304 , A61B5/349 , A61B5/352 , A61B5/725 , A61N1/3627 , A61N1/3702 , A61N1/3925 , A61N1/3956 , A61B5/7282
Abstract: Methods and/or device facilitating and selecting among multiple modes of filtering a cardiac electrical signal, in which one filtering mode includes additional high pass filtering of low frequency signals, relative to the other filtering mode. The selection filtering modes may include comparing sensed signal amplitude to one or more thresholds, using the multiple modes of filtering. In another example, an additional high pass filter is enabled, over and above a default or baseline filtering mode, and the detected cardiac signal is monitored for indications of possible undersensing, and/or for drops in amplitude toward a threshold, and the additional high pass filter may be disabled upon finding of possible undersensing or drop in signal amplitude.
-
公开(公告)号:US10888238B2
公开(公告)日:2021-01-12
申请号:US16177884
申请日:2018-11-01
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Venugopal Allavatam , Stephen J. Hahn , Keith L. Herrmann , Mitchell D. Lanz , Krzysztof Z. Siejko , Benjamin Speakman
IPC: A61B5/0402 , A61B5/0452 , A61N1/39 , A61N1/37 , A61N1/362 , A61B5/00 , A61B5/0456 , A61B5/0428 , A61B5/042 , A61B5/04
Abstract: Methods and/or device facilitating and selecting among multiple modes of filtering a cardiac electrical signal, in which one filtering mode includes additional high pass filtering of low frequency signals, relative to the other filtering mode. The selection filtering modes may include comparing sensed signal amplitude to one or more thresholds, using the multiple modes of filtering. In another example, an additional high pass filter is enabled, over and above a default or baseline filtering mode, and the detected cardiac signal is monitored for indications of possible undersensing, and/or for drops in amplitude toward a threshold, and the additional high pass filter may be disabled upon finding of possible undersensing or drop in signal amplitude.
-
公开(公告)号:US20190216348A1
公开(公告)日:2019-07-18
申请号:US16297029
申请日:2019-03-08
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Amy Jean Brisben , Venugopal Allavatam , Krzysztof Z. Siejko , Deepa Mahajan , Kevin G. Wika , Keith L. Herrmann , Stephen J. Hahn
IPC: A61B5/04 , A61N1/39 , A61N1/05 , A61B5/042 , A61B5/00 , A61B5/0452 , A61N1/362 , A61B5/0402 , A61N1/04 , A61N1/365 , A61B5/0468 , A61B5/0456 , A61N1/37
CPC classification number: A61B5/04011 , A61B5/02416 , A61B5/0245 , A61B5/04012 , A61B5/04017 , A61B5/0402 , A61B5/04028 , A61B5/042 , A61B5/0422 , A61B5/0452 , A61B5/04525 , A61B5/0456 , A61B5/0468 , A61B5/0472 , A61B5/686 , A61B5/6869 , A61B5/72 , A61B5/7203 , A61B5/7221 , A61N1/046 , A61N1/05 , A61N1/0563 , A61N1/3622 , A61N1/3625 , A61N1/36514 , A61N1/3704 , A61N1/3925 , A61N1/3956 , A61N1/3987
Abstract: New and alternative approaches to the monitoring of cardiac signal quality for external and/or implantable cardiac devices. In one example, signal quality is monitored continuously or in response to a triggering event or condition and, upon identification of a reduction in signal quality, a device may reconfigure its sensing state. In another example, one or more trends of signal quality are monitored by a device, either continuously or in response to a triggering event or condition, and sensing reconfiguration may be performed in response to identified trends and events. In yet another example, a device may use a looping data capture mode to track sensing data in multiple vectors while primarily relying on less than all sensing vectors to make decisions and, in response to a triggering event or condition, the looped data can be analyzed automatically, without waiting for additional data capture to reconfigure sensing upon identification of the triggering event or condition. In another example a device calculates a composite cardiac cycle by overlaying signal morphology for a number of cardiac cycles and analyzes the composite cardiac cycle to calculate signal quality metrics.
-
公开(公告)号:US10321834B2
公开(公告)日:2019-06-18
申请号:US15297624
申请日:2016-10-19
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Amy Jean Brisben , Venugopal Allavatam , Krzysztof Z. Siejko , Deepa Mahajan , Kevin G. Wika , Keith L. Herrmann , Stephen J. Hahn
IPC: A61B5/04 , A61B5/042 , A61B5/00 , A61N1/39 , A61B5/0452 , A61N1/362 , A61B5/0402 , A61N1/04 , A61N1/05 , A61N1/365 , A61N1/37 , A61B5/0456 , A61B5/0468 , A61B5/024 , A61B5/0245 , A61B5/0472
Abstract: Methods and devices for combining multiple signals from multiple sensing vectors for use in wearable or implantable cardiac devices. A preferred sensing configuration may be selected at a given point in time, for example under clinical conditions. Signal quality for the preferred sensing configuration is then monitored, and if the signal quality degrades under selected conditions, re-analysis may be performed to select a different sensing vector configuration for at least temporary use. If signal quality increases for the preferred sensing configuration, temporary use of the different sensing vector configuration may cease and reversion to the preferred sensing configuration takes place if certain conditions are met. The conditions for reversion may depend in part of a history of sensing signal quality for the preferred sensing configuration.
-
公开(公告)号:US10299688B2
公开(公告)日:2019-05-28
申请号:US15297588
申请日:2016-10-19
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Amy Jean Brisben , Venugopal Allavatam , Krzysztof Z. Siejko , Deepa Mahajan , Kevin G. Wika , Keith L. Herrmann , Stephen J. Hahn
IPC: A61N1/365 , A61B5/04 , A61B5/042 , A61B5/00 , A61N1/39 , A61B5/0452 , A61N1/362 , A61B5/0402 , A61N1/04 , A61N1/05 , A61N1/37 , A61B5/0456 , A61B5/0468 , A61B5/024 , A61B5/0245 , A61B5/0472
Abstract: Methods and devices for combining multiple signals from multiple sensing vectors for use in wearable or implantable cardiac devices. Signals from multiple vectors may be combined using weighting factors and/or by conversion to different coordinate systems than the original inputs, which may or may not be normalized to patient anatomy. Signals from multiple sensing vectors may be combined prior to or after several analytical steps or processes including before or after filtering, and before or after cardiac cycle detection. Cardiac cycle detection information may be combined across multiple sensing vectors before or after analysis of individual vectors for noise or overdetection. Cardiac cycle detection information may also be combined across multiple sensing vectors to identify noise and/or overdetection.
-
公开(公告)号:US10123742B2
公开(公告)日:2018-11-13
申请号:US15362851
申请日:2016-11-29
Applicant: CARDIAC PACEMAKERS, INC.
Inventor: Krzysztof Z. Siejko , Venugopal Allavatam , Amy Jean Brisben , Stephen J. Hahn , Keith L. Herrmann
IPC: A61B5/00 , A61B5/0452 , A61B5/021 , A61B5/11 , A61N1/39 , A61N1/365 , A61B7/04 , A61B5/0205 , A61B5/04 , A61B5/1455 , A61B5/042 , A61B5/0245
Abstract: In some examples, cardiac cycle detection may be used as an approach to cardiac activity tracking, with one or more second approaches to cardiac activity tracking also available for use. Additional rate measurement relying on different sources or analyses may require extra power consumption over the cycle detection methods. Therefore, new methods and devices are disclosed that selectively activate a second cardiac rate measurement. In some illustrative methods and devices, decisions are made as to whether and which previously collected data, if any, is to be discarded, replaced, or corrected upon activation of the second cardiac rate measurement. In some illustrative methods and devices, a cardiac cycle detection approach to cardiac activity tracking may be bypassed by a second cardiac rate measurement.