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公开(公告)号：US09375181B2
公开(公告)日：2016-06-28
申请号：US14522938
申请日：2014-10-24
Applicant: Medtronic, Inc.
Inventor： Michael T. Hemming , Saul E. Greenhut
IPC: A61B5/04 , A61B5/00 , A61B5/0402
CPC classification number: A61B5/7203 , A61B5/04012 , A61B5/0402 , A61B5/0452 , A61B5/0538 , A61B5/1107 , A61B5/686 , A61N1/365 , A61N1/3718
Abstract: The disclosure describes techniques and systems for filtering noise from a physiological signal. In one example, one or more processors are configured to receive a signal indicative of physiological activity of a patient, wherein the signal comprises noise at one or more frequencies, and filter the noise from the signal according to a noise rejection model, wherein the noise rejection model predicts the noise at the one or more frequencies. The one or more processors may also be configured to, responsive to initiation of a blanking period for the signal, advance the noise rejection model in time during the blanking period, and, responsive to termination of the blanking period, filter, based on the noise rejection model advanced in time, the noise at the one or more frequencies from the signal.
Abstract translation: 本公开描述了用于从生理信号滤波噪声的技术和系统。 在一个示例中，一个或多个处理器被配置为接收指示患者的生理活动的信号，其中所述信号包括一个或多个频率的噪声，并且根据噪声抑制模型对来自信号的噪声进行滤波，其中噪声 拒绝模型预测在一个或多个频率的噪声。 一个或多个处理器还可以被配置为响应于信号的消隐周期的启动，在消隐周期期间及时推进噪声抑制模型，并且响应于消隐周期的终止，基于噪声进行滤波 拒绝模式及时提前，噪声在一个或多个频率的信号。
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公开(公告)号：US12295736B2
公开(公告)日：2025-05-13
申请号：US18193457
申请日：2023-03-30
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang , Saul E. Greenhut , Yuanzhen Liu
Abstract: A medical device is configured to sense an electrical signal and determine that signal to noise criteria are met based on electrical signal segments stored in response to sensed electrophysiological events. The medical device is configured to determine an increased gain signal segment from one of the stored electrical signal segments in response to determining that the signal to noise criteria are met. The medical device determines a noise metric from the increased gain signal segment. The stored electrical signal segment associated with the increased gain signal segment may be classified as a noise segment in response to the noise metric meeting noise detection criteria.
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公开(公告)号：US12274889B2
公开(公告)日：2025-04-15
申请号：US17812974
申请日：2022-07-15
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang , Jian Cao , Saul E. Greenhut , Robert W. Stadler
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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公开(公告)号：US20240188885A1
公开(公告)日：2024-06-13
申请号：US18582394
申请日：2024-02-20
Applicant: Medtronic, Inc.
Inventor： Wade M. Demmer , Todd J. Sheldon , Saul E. Greenhut , James D. Reinke
CPC classification number: A61B5/4836 , A61B5/363 , A61B5/686 , A61N1/3622 , A61N1/36592 , A61N1/3706 , A61N1/3756 , A61B5/318 , A61N1/37205
Abstract: The control module of a first pacemaker included in an implantable medical device system including the first pacemaker and a second pacemaker is configured to set a pacing escape interval in response to a far field pacing pulse sensed by the first pacemaker. The far field pacing pulse is a pacing pulse delivered by the second pacemaker. The pacing escape interval is allowed to continue without restarting the in response to a far field intrinsic event sensed by the first pacemaker during the pacing escape interval. The first pacemaker delivers a cardiac pacing pulse to the heart upon expiration of the pacing escape interval.
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公开(公告)号：US20230233131A1
公开(公告)日：2023-07-27
申请号：US18193457
申请日：2023-03-30
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang , Saul E. Greenhut , Yuanzhen Liu
CPC classification number: A61B5/363 , A61B5/7264 , A61B5/686 , A61B5/4836 , A61B5/29 , A61B5/7203 , A61B5/7225
Abstract: A medical device is configured to sense an electrical signal and determine that signal to noise criteria are met based on electrical signal segments stored in response to sensed electrophysiological events. The medical device is configured to determine an increased gain signal segment from one of the stored electrical signal segments in response to determining that the signal to noise criteria are met. The medical device determines a noise metric from the increased gain signal segment. The stored electrical signal segment associated with the increased gain signal segment may be classified as a noise segment in response to the noise metric meeting noise detection criteria.
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Patent Agency Ranking
公开(公告)号：US11617534B2
公开(公告)日：2023-04-04
申请号：US17172770
申请日：2021-02-10
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang , Saul E. Greenhut , Yuanzhen Liu
Abstract: A medical device is configured to sense an electrical signal and determine that signal to noise criteria are met based on electrical signal segments stored in response to sensed electrophysiological events. The medical device is configured to determine an increased gain signal segment from one of the stored electrical signal segments in response to determining that the signal to noise criteria are met. The medical device determines a noise metric from the increased gain signal segment. The stored electrical signal segment associated with the increased gain signal segment may be classified as a noise segment in response to the noise metric meeting noise detection criteria.
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公开(公告)号：US11413469B2
公开(公告)日：2022-08-16
申请号：US16696129
申请日：2019-11-26
Applicant: Medtronic, Inc.
Inventor： Jian Cao , Timothy A. Ebeling , Saul E. Greenhut , Michael W. Heinks , Irving J. Sanchez , Paul R. Solheim , Xusheng Zhang , Gerald P. Arne
Abstract: An implantable medical device system capable of sensing cardiac electrical signals includes a sensing circuit, a therapy delivery circuit and a control circuit. The sensing circuit is configured to receive a cardiac electrical signal and sense a cardiac event in response to the signal crossing a cardiac event sensing threshold. The therapy delivery circuit is configured to deliver an electrical stimulation therapy to a patient's heart via the electrodes coupled to the implantable medical device. The control circuit is configured to control the sensing circuit to set a starting value of the cardiac event sensing threshold and hold the starting value constant for a sense delay interval. The control circuit is further configured to detect an arrhythmia based on cardiac events sensed by the sensing circuit and control the therapy delivery circuit to deliver the electrical stimulation therapy in response to detecting the arrhythmia.
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公开(公告)号：US11337636B2
公开(公告)日：2022-05-24
申请号：US16792466
申请日：2020-02-17
Applicant: Medtronic, Inc.
Inventor： Xusheng Zhang , Jian Cao , Saul E. Greenhut
IPC: A61B5/363 , A61N1/365 , A61N1/362 , A61N1/37 , A61B5/316 , A61B5/341 , A61B5/349 , A61B5/352 , A61B5/021 , A61B5/00 , A61N1/39 , A61B5/0245 , H03H21/00
Abstract: A medical device system, such as an extra-cardiovascular implantable cardioverter defibrillator ICD, 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 medical device system determines a morphology parameter correlated to signal noise from time segments of the second cardiac electrical signal, detects a noisy signal segment based on the signal morphology parameter; and withholds detection of a tachyarrhythmia episode in response to detecting a threshold number of noisy signal segments.
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公开(公告)号：US11197630B2
公开(公告)日：2021-12-14
申请号：US16377977
申请日：2019-04-08
Applicant: Medtronic, Inc.
Inventor： Saul E. Greenhut , Robert W. Stadler , Xusheng Zhang
Abstract: A method and medical device for adjusting a blanking period that includes sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a plurality of sensing vectors, determining whether to adjust a blanking period during a first operating state, advancing from the first operating state to a second operating state in response to the sensed cardiac signals, determining, while in the second operating state, whether the blanking period was adjusted while in the first operating state, and adjusting the blanking period while in the second operating state in response to the blanking period being adjusted while in the first operating state.
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公开(公告)号：US11033743B2
公开(公告)日：2021-06-15
申请号：US16390838
申请日：2019-04-22
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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