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公开(公告)号：US20240189602A1
公开(公告)日：2024-06-13
申请号：US18444625
申请日：2024-02-16
Applicant: Medtronic, Inc.
Inventor： Gavin M. MISCHLER , Yuanzhen LIU , Saul E. GREENHUT , Xusheng ZHANG
CPC classification number: A61N1/3621 , A61B5/352 , A61B5/363 , A61N1/365 , A61N1/3704 , A61N1/3706
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：US20240050755A1
公开(公告)日：2024-02-15
申请号：US18496781
申请日：2023-10-27
Applicant: Medtronic, Inc.
Inventor： Xusheng ZHANG , Yuanzhen LIU
CPC classification number: A61N1/3702 , A61N1/39622 , A61B5/363 , A61B5/341 , A61B5/4836 , A61B5/7435 , A61N1/3625 , A61B2560/02
Abstract: A medical device processor is configured to receive a first cardiac electrical signal sensed from a first sensing electrode vector, receive a second cardiac electrical signal sensed from a second sensing electrode vector different than the first sensing electrode vector, and construct a third cardiac electrical signal from the first cardiac electrical signal and the second cardiac electrical signal. In some examples, the system determines sensed cardiac events according to at least one setting of a cardiac event sensing threshold control parameter from at least the third cardiac electrical signal and may determine at least one acceptable setting of a sensing control parameter based on the determined sensed cardiac events. The processor may generate an output representative of the determined sensed cardiac events.
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公开(公告)号：US20230173279A1
公开(公告)日：2023-06-08
申请号：US18054137
申请日：2022-11-09
Applicant: Medtronic, Inc.
Inventor： Xusheng ZHANG , Saul E. GREENHUT , Yuanzhen LIU , Alfonso ARANDA HERNANDEZ , Michael W. HEINKS , Jean E. HUDSON , Timothy A. EBELING , Irving J. SANCHEZ , Scott R. HAWKINSON , Troy E. JACKSON , James VANDER HEYDEN
CPC classification number: A61N1/362 , A61B5/363 , A61N1/36507
Abstract: A medical device is configured to determine tachyarrhythmia evidence in a cardiac signal segment received from a cardiac electrical signal sensed during a pacing escape interval started to schedule a pending cardiac pacing pulse. The medical device may delay the pending cardiac pacing pulse in response to determining the tachyarrhythmia evidence during the pacing escape interval.
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公开(公告)号：US20230148939A1
公开(公告)日：2023-05-18
申请号：US18045135
申请日：2022-10-07
Applicant: Medtronic, Inc.
Inventor： Alfonso ARANDA HERNANDEZ , Timothy A. EBELING , Saul E. GREENHUT , Troy E. JACKSON , Yuanzhen LIU , Irving J. SANCHEZ , James A. VANDER HEYDEN , Xusheng ZHANG
CPC classification number: A61B5/363 , A61N1/365 , A61N1/3621
Abstract: A medical device is configured to determine an amplitude metric from a cardiac signal segment sensed over a predetermined time interval and determine if the amplitude metric meets an amplitude threshold. The medical device is configured to perform a first analysis of the cardiac electrical signal segment for detecting a first arrhythmia when the amplitude metric does not meet the amplitude threshold and perform a second analysis of the cardiac electrical signal segment for detecting a second arrhythmia different than the first arrhythmia in response to the amplitude metric meeting the amplitude threshold.
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公开(公告)号：US20240260884A1
公开(公告)日：2024-08-08
申请号：US18639881
申请日：2024-04-18
Applicant: Medtronic, Inc.
Inventor： Xusheng ZHANG , Jian CAO , Yuanzhen LIU
IPC: A61B5/363 , A61B5/346 , A61B5/352 , A61N1/02 , A61N1/05 , A61N1/08 , A61N1/362 , A61N1/365 , A61N1/37 , A61N1/39
CPC classification number: A61B5/363 , A61B5/346 , A61B5/352 , A61N1/08 , A61N1/36585 , A61N1/3925 , A61N1/3956 , A61N1/3987 , A61N1/025 , A61N1/0563 , A61N1/0587 , A61N1/3621 , A61N1/3704
Abstract: An implantable cardioverter defibrillator (ICD) performs a method that includes determining whether first criteria for detecting a ventricular tachyarrhythmia are met by a cardiac electrical signal. The ICD determines features from cardiac signal segment of a group of cardiac signal segments and determines whether a first portion of the features satisfy monomorphic waveform criteria and determines whether a second portion of the features satisfy supraventricular beat criteria. The ICD determines whether second criteria for detecting the ventricular tachyarrhythmia are met and withholds detecting of the ventricular tachyarrhythmia in response to the monomorphic waveform criteria and the supraventricular beat criteria being met.
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Patent Agency Ranking
公开(公告)号：US20230346316A1
公开(公告)日：2023-11-02
申请号：US18350444
申请日：2023-07-11
Applicant: Medtronic, Inc.
Inventor： Saul E. GREENHUT , Yuanzhen LIU , Xusheng ZHANG
CPC classification number: A61B5/7203 , A61B5/363 , A61B5/316 , A61B5/4836 , A61B5/7221 , A61N1/365
Abstract: A medical device is configured to sense event signals from a cardiac electrical signal and determine maximum amplitudes of cardiac electrical signal segments associated with sensed event signals. The medical device is configured to determine at least one tachyarrhythmia metric based on at least a greatest one of the determined maximum amplitudes. The medical device may determine when the at least one tachyarrhythmia metric does not meet true tachyarrhythmia evidence and, in response, determine when the maximum amplitudes meet suspected noise criteria. The medical device may withhold a tachyarrhythmia detection and tachyarrhythmia therapy when suspected noise criteria are met.
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公开(公告)号：US20250072810A1
公开(公告)日：2025-03-06
申请号：US18730301
申请日：2023-02-14
Applicant: Medtronic, Inc.
Inventor： Michael W. HEINKS , Alfonso ARANDA HERNANDEZ , Timothy A. EBELING , Saul E. GREENHUT , Scott R. HAWKINSON , Troy E. JACKSON , Yuanzhen LIU , Irving J. SANCHEZ , James VANDER HEYDEN , Xusheng ZHANG
Abstract: A medical device comprises a sensing circuit configured to sense at least one cardiac electrical signal, sense first ventricular event signals from the at least one cardiac electrical signal according to a sensitivity setting set to a first amplitude; and a control circuit in communication with the sensing circuit, the control circuit configured to determine that the at least one cardiac electrical signal meets suspected undersensing criteria, in response to determining that the suspected undersensing criteria are met, perform a morphology analysis of a first cardiac signal segment acquired from a first cardiac electrical signal of the at least one cardiac electrical signal sensed by the sensing circuit over a first predetermined time interval, determine that the first cardiac signal segment is a first tachyarrhythmia segment based on the morphology analysis, and adjust the sensitivity setting from the first amplitude to a second amplitude less than the first amplitude in response to determining that the first cardiac signal segment is a first tachyarrhythmia segment.
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公开(公告)号：US20230100431A1
公开(公告)日：2023-03-30
申请号：US17823055
申请日：2022-08-29
Applicant: Medtronic, Inc.
Inventor： Yuanzhen LIU , Alfonso ARANDA HERNANDEZ , Timothy A. EBELING , Saul E. GREENHUT , Michael W. HEINKS , Jean E. HUDSON , Troy E. JACKSON , Irving J. SANCHEZ , James A. VANDER HEYDEN , Xusheng ZHANG
Abstract: A medical device is configured to sense first ventricular event signals from a first cardiac electrical signal and sense second ventricular event signals from a second cardiac electrical signal. The medical device is configured to determine sensed event data in response to the first ventricular event signals and the second ventricular event signals. The medical device may select one of the first cardiac electrical signal or the second cardiac electrical signal for providing input for tachyarrhythmia detection based on the sensed event data.
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公开(公告)号：US20210402190A1
公开(公告)日：2021-12-30
申请号：US17350153
申请日：2021-06-17
Applicant: Medtronic, Inc.
Inventor： Xusheng ZHANG , Yuanzhen LIU
Abstract: A medical device processor is configured to receive a first cardiac electrical signal sensed from a first sensing electrode vector, receive a second cardiac electrical signal sensed from a second sensing electrode vector different than the first sensing electrode vector, and construct a third cardiac electrical signal from the first cardiac electrical signal and the second cardiac electrical signal. In some examples, the system determines sensed cardiac events according to at least one setting of a cardiac event sensing threshold control parameter from at least the third cardiac electrical signal and may determine at least one acceptable setting of a sensing control parameter based on the determined sensed cardiac events. The processor may generate an output representative of the determined sensed cardiac events.
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公开(公告)号：US20210353233A1
公开(公告)日：2021-11-18
申请号：US16874920
申请日：2020-05-15
Applicant: Medtronic, Inc.
Inventor： Saul E. GREENHUT , Yuanzhen LIU , Xusheng ZHANG
IPC: A61B5/00 , A61B5/0464 , A61B5/04
Abstract: A medical device is configured to sense event signals from a cardiac electrical signal and determine maximum amplitudes of cardiac electrical signal segments associated with sensed event signals. The medical device is configured to determine at least one tachyarrhythmia metric based on at least a greatest one of the determined maximum amplitudes. The medical device may determine when the at least one tachyarrhythmia metric does not meet true tachyarrhythmia evidence and, in response, determine when the maximum amplitudes meet suspected noise criteria. The medical device may withhold a tachyarrhythmia detection and tachyarrhythmia therapy when suspected noise criteria are met.
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