公开(公告)号：US20210251551A1

公开(公告)日：2021-08-19

申请号：US17172770

申请日：2021-02-10

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Saul E. Greenhut ,  Yuanzhen Liu

IPC: A61B5/363 ,  A61B5/00 ,  A61B5/29

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.

公开(公告)号：US20210138243A1

公开(公告)日：2021-05-13

申请号：US17087960

申请日：2020-11-03

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Kevin L. Dehmer ,  Saul Greenhut ,  Troy E. Jackson ,  Yuanzhen Liu

IPC: A61N1/362 ,  A61B5/0464

Abstract: A medical device is configured to determine time intervals between consecutive cardiac events sensed from a cardiac electrical signal, increase a value of a tachyarrhythmia interval count in response to each of the determine time intervals detected as a tachyarrhythmia interval. The device is further configured to detect normal sinus rhythm events and the decrease the value of the tachyarrhythmia interval count in response to a threshold number of detected normal sinus rhythm events.

公开(公告)号：US10507332B2

公开(公告)日：2019-12-17

申请号：US15964182

申请日：2018-04-27

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang ,  Jian Cao ,  Saul E. Greenhut ,  Robert W. Stadler

IPC: A61N1/39 ,  A61B5/0456 ,  A61B5/042 ,  A61B5/0464 ,  A61B5/00

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.

公开(公告)号：US10252067B2

公开(公告)日：2019-04-09

申请号：US14487248

申请日：2014-09-16

Applicant: Medtronic, Inc.

Inventor： Saul E Greenhut ,  Robert W Stadler ,  Xusheng Zhang

IPC: A61N1/39 ,  A61B5/0456 ,  A61B5/0464 ,  A61N1/37 ,  A61B5/00

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.

公开(公告)号：US09872630B2

公开(公告)日：2018-01-23

申请号：US14706414

申请日：2015-05-07

Applicant: Medtronic, Inc.

Inventor： Robert W Stadler ,  Raja N Ghanem ,  Xusheng Zhang

IPC: A61B5/00 ,  A61N1/362 ,  A61N1/39 ,  A61B5/0464 ,  A61B5/0468 ,  A61B5/042

CPC classification number: A61N1/3987 ,  A61B5/04011 ,  A61B5/0422 ,  A61B5/0456 ,  A61B5/046 ,  A61B5/0464 ,  A61B5/0468 ,  A61B5/4836 ,  A61B5/686 ,  A61B5/7203 ,  A61B5/7221 ,  A61B5/7239 ,  A61N1/05 ,  A61N1/3621 ,  A61N1/3925 ,  A61N1/3956 ,  Y10S128/901 ,  Y10S128/902

Abstract: A subcutaneously implantable cardiac medical device and a method of sensing a cardiac signal therein that includes a plurality of electrodes to sense a cardiac signal along a plurality of sensing vectors to detect a first interval and a second interval associated with a first detected event, and a processor configured to determine whether the first interval and the second interval are shorter than a predetermined threshold, determine whether the first interval and the second interval are similar, and determine, in response to the first interval and the second interval being similar, whether the sensed cardiac signal is either a noisy signal or a QRS signal.

公开(公告)号：US09610025B2

公开(公告)日：2017-04-04

申请号：US14339156

申请日：2014-07-23

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang

IPC: A61B5/0464 ,  A61N1/39 ,  A61B5/04 ,  A61B5/0456 ,  A61B5/046 ,  A61B5/00 ,  A61B5/0452 ,  A61B5/0468 ,  A61N1/362 ,  A61N1/368 ,  A61N1/37

CPC classification number: A61N1/3987 ,  A61B5/04011 ,  A61B5/04012 ,  A61B5/0422 ,  A61B5/04525 ,  A61B5/0456 ,  A61B5/046 ,  A61B5/0464 ,  A61B5/0468 ,  A61B5/686 ,  A61B5/7207 ,  A61B5/7221 ,  A61B5/7264 ,  A61B5/7282 ,  A61N1/3621 ,  A61N1/3627 ,  A61N1/368 ,  A61N1/37 ,  A61N1/3956

Abstract: A method and medical device for detecting a cardiac event that includes sensing cardiac signals from a plurality of electrodes, sensing a plurality of beats in response to the sensed cardiac signals, identifying each beat of the plurality of beats as one of a normal beat and a not normal beat, determining at least one of whether a number of beats identified as a normal beat is greater than a normal beat threshold, whether an RR interval associated with the beats identified as being a normal beat is less than a threshold interval, and whether RR intervals associated with the beats identified as being normal beats are within an RR interval range, and identifying the cardiac event as being one of shockable and not shockable in response to the determining.

公开(公告)号：US09566012B2

公开(公告)日：2017-02-14

申请号：US14524090

申请日：2014-10-27

Applicant: Medtronic, Inc.

Inventor： Saul E. Greenhut ,  Xusheng Zhang ,  Robert W. Stadler

IPC: A61B5/04 ,  A61N1/39 ,  A61B5/042 ,  A61B5/0456 ,  A61B5/0452 ,  A61B5/0472 ,  A61B5/00 ,  A61B5/0205 ,  A61N1/37 ,  A61B5/0245

CPC classification number: A61B5/04011 ,  A61B5/0205 ,  A61B5/0245 ,  A61B5/04012 ,  A61B5/0422 ,  A61B5/0452 ,  A61B5/04525 ,  A61B5/0456 ,  A61B5/0472 ,  A61B5/4836 ,  A61B5/7275 ,  A61B5/7282 ,  A61N1/3702 ,  A61N1/3925 ,  A61N1/3956 ,  A61N1/3962 ,  A61N1/3987

Abstract: A medical device is configured to receive at least two physical cardiac electrical signals from a patient's heart via electrodes defining at least two physical sensing vectors. The medical device determines a signal feature for each of a plurality of virtual sensing vectors extending at a plurality of angles relative to one of the at least two physical sensing vectors during a known cardiac rhythm, compares the determined signal features and establishes criteria for confirming a suspected condition in response to the comparing.

Abstract translation: 医疗设备被配置为经由定义至少两个物理感测向量的电极从患者的心脏接收至少两个物理心脏电信号。 医疗设备确定在已知心律期间相对于所述至少两个物理感测向量之一以多个角度延伸的多个虚拟感测向量中的每一个的信号特征，比较确定的信号特征并建立用于确认 怀疑病情反应比较。

公开(公告)号：US09492677B2

公开(公告)日：2016-11-15

申请号：US14789008

申请日：2015-07-01

Applicant: Medtronic, Inc.

Inventor： Saul E. Greenhut ,  Robert J. Nehls ,  Walter H. Olson ,  Xusheng Zhang ,  Wade M. Demmer ,  Troy E. Jackson ,  James D. Reinke

IPC: A61N1/00 ,  A61N1/39 ,  A61N1/372 ,  A61N1/375 ,  A61N1/362 ,  A61N1/05 ,  A61N1/365

CPC classification number: A61N1/3962 ,  A61N1/056 ,  A61N1/3621 ,  A61N1/36585 ,  A61N1/37288 ,  A61N1/3756 ,  A61N1/3987

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.

公开(公告)号：US09486637B2

公开(公告)日：2016-11-08

申请号：US14339833

申请日：2014-07-24

Applicant: Medtronic, Inc.

Inventor： Saul E. Greenhut ,  Robert W. Stadler ,  Xusheng Zhang

IPC: A61B5/04 ,  A61N1/39 ,  A61B5/0452 ,  A61N1/362 ,  A61N1/37 ,  A61B5/0464 ,  A61B5/00

CPC classification number: A61N1/3987 ,  A61B5/04525 ,  A61B5/0464 ,  A61B5/686 ,  A61N1/3622 ,  A61N1/3624 ,  A61N1/37 ,  A61N1/3925 ,  A61N1/3962

Abstract: An implantable medical device system includes an implantable cardioverter defibrillator (ICD) for detecting and treating ventricular tachycardia (VT). The ICD includes a sensing module for sensing a cardiac signal from selected cardiac signal sensing vectors. A control module generates morphology templates of the cardiac signals for multiple patient postures for each of the available sensing vectors. A cardiac signal received during an unknown cardiac rhythm is compared to the morphology templates without determining a current posture of the patient. The unknown cardiac rhythm is detected and classified as supraventricular tachycardia in response to the cardiac signal matching at least one of the morphology templates.

Abstract translation: 可植入医疗装置系统包括用于检测和治疗室性心动过速（VT）的可植入式心律转复除颤器（ICD）。 ICD包括用于感测来自所选择的心脏信号感测向量的心脏信号的感测模块。 控制模块为每个可用的感测向量生成用于多个患者姿势的心脏信号的形态学模板。 将未知心脏节律期间接收的心脏信号与形态学模板进行比较，而不确定患者的当前姿势。 检测未知的心律并将其分类为室上性心动过速，以响应心脏信号匹配至少一个形态学模板。

公开(公告)号：US09352165B2

公开(公告)日：2016-05-31

申请号：US14255158

申请日：2014-04-17

Applicant: Medtronic, Inc.

Inventor： Xusheng Zhang

IPC: A61B5/04 ,  A61N1/38 ,  A61N1/39

CPC classification number: A61N1/3987 ,  A61B5/04011 ,  A61B5/04012 ,  A61B5/042 ,  A61N1/3925 ,  A61N1/3962

Abstract: A method and medical device for detecting a cardiac event that includes sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector sensing a first interval and a second sensing vector simultaneously sensing a second, determining, for each of the first interval and the second interval, whether each beat of the plurality of beats is one of a match beat and a non-match beat, determining whether each beat of the plurality of beats is one of a high confidence beat and a low confidence beat, determining, for each of the first interval and the second interval, the number of beats determined to be both a non-match beat and a high confidence beat is greater than a non-match threshold, and determining whether to deliver therapy for the cardiac event in response to identifying of each of the first interval and the second interval as being one of shockable and not shockable.

Abstract translation: 一种用于检测心脏事件的方法和医疗装置，其包括感测来自多个电极的心脏信号，所述多个电极形成感测第一间隔的第一感测向量和同时感测第二间隔的第二感测向量， 第一间隔和第二间隔，多个节拍中的每个拍子是否是匹配拍子和不匹配拍子之一，确定多个节拍中的每个拍子是否是高置信拍子和低置信拍子之一， 确定对于第一间隔和第二间隔中的每一个，确定为不匹配搏动和高置信度搏动的搏动次数大于非匹配阈值，并且确定是否为心脏事件递送治疗 响应于将所述第一间隔和所述第二间隔中的每一个识别为可震荡且不可震荡的。