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公开(公告)号：US20230173282A1
公开(公告)日：2023-06-08
申请号：US18073215
申请日：2022-12-01
CPC分类号： A61N1/36585 , A61N1/025
摘要： Systems and methods for detecting cardiac arrhythmias such as atrial tachyarrhythmia (AT) are discussed. An exemplary system includes an arrhythmia detector circuit that can receive physiologic information sensed from a patient over time, detect an arrhythmia onset when the physiologic information during a first time period satisfies an onset condition, and in response to the detected arrhythmia onset, detect an arrhythmia termination when the physiologic information during a second time period, subsequent to and longer than the first time period, satisfies an exit condition. An arrhythmia episode can be detected based on an arrhythmia duration between the detected onset and termination. The detected sustained arrhythmia episode can be provided to a user or a processor for further processing.
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公开(公告)号：US20240138803A1
公开(公告)日：2024-05-02
申请号：US18500637
申请日：2023-11-02
CPC分类号： A61B7/00 , A61B5/352 , A61B5/361 , A61B2562/0204
摘要： Systems and methods are disclosed to determine an indication of one of an atrial fibrillation S4 heart sound or a non-atrial fibrillation S4 heart sound for an S4 signal portion of cardiac acceleration information of a patient based on determined first and second correlations of a morphology of the S4 signal portion to atrial-fibrillation and non-atrial fibrillation S4 templates, respectively, and to determine an atrial fibrillation event of the patient using cardiac electrical information of the patient and the determined indication for the S4 signal portion.
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公开(公告)号：US20240148308A1
公开(公告)日：2024-05-09
申请号：US18501257
申请日：2023-11-03
CPC分类号： A61B5/363 , A61B5/4818 , A61B5/7275 , A61B5/7282 , A61B5/7292 , A61B5/746
摘要： Systems and methods for monitoring a subject for sleep apnea risk based on a bradycardia burden are disclosed. A sleep apnea monitoring system comprises a risk stratification circuit configured to detect bradycardia using cardiac information of the subject during a monitoring period, determine a bradycardia burden representing accumulated time or relative time of the subject being in the detected bradycardia over the monitoring period, and determine an apnea risk based on the bradycardia burden. An output unit can provide the apnea risk to a user, or to a process executed by an apnea detector to perform a confirmatory apnea detection.
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公开(公告)号：US20240013924A1
公开(公告)日：2024-01-11
申请号：US18212496
申请日：2023-06-21
CPC分类号： G16H50/30 , G16H15/00 , G16H40/20 , A61B5/7282 , A61B5/742 , A61B5/7475 , G16H40/67
摘要： Systems and methods for managing physiological events generated by a medical device in a patient are discussed. An exemplary system includes a controller circuit to receive information about a plurality of physiological events detected by a medical device in a patient, generate for each of the physiological events a respective feature set using the received information, and cluster the physiological events into different event groups using values of temporal or morphological features of the generated feature sets. The event groups each include a respective set of physiological events. The controller circuit can identify from at least one event group a representative event representing the physiological events of that event group, and output to a user or a process the representative event and an indication that the representative event has been determined and represents the set of physiological events in the even group.
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公开(公告)号：US20240008821A1
公开(公告)日：2024-01-11
申请号：US18218504
申请日：2023-07-05
IPC分类号： A61B5/00 , A61B5/0245 , A61B5/352
CPC分类号： A61B5/7275 , A61B5/6847 , A61B5/0245 , A61B5/352
摘要： Systems and methods for detecting and classifying premature ventricular contractions (PVCs) are discussed. An exemplary system includes a sensor circuit to sense a cardiac signal of a subject, and a processor circuit to detect heartbeats from the cardiac signal and detect a PVC under a first detection mode or a different second detection mode. The first detection mode includes identifying a PVC candidate of a particular type using cardiac intervals or signal amplitudes of the detected heartbeats, and classifying the identified PVC candidate as a PVC singleton or a pattern of multiple consecutive PVCs using signal features including morphology features of the sensed cardiac signal. The second detection mode includes detecting PVC of the particular type using the cardiac intervals or the signal amplitudes of the detected heartbeats. The first detection mode can be transitioned to the second detection mode in response to a mode-switching trigger event.
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公开(公告)号：US20220095983A1
公开(公告)日：2022-03-31
申请号：US17489413
申请日：2021-09-29
摘要： Systems and methods for detecting cardiac arrhythmia are discussed. A medical-device system includes an arrhythmia detector circuit and an event prioritizer circuit. The arrhythmia detector circuit can detect an atrial activation event from a cardiac electrical signal sensed from the patient, and determine an atrial fibrillation (AF) confidence indicator based on a signal characteristic of the atrial activation event. The event prioritizer circuit can generate an event priority for the AF event based on the AF confidence indicator. Multiple AF events may be prioritized in a specific order and presented to a user or a process.
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