公开(公告)号：US09008773B2

公开(公告)日：2015-04-14

申请号：US13835600

申请日：2013-03-15

Applicant: Medtronic, Inc.

Inventor： Bruce D. Gunderson

IPC: A61N1/39 ,  A61N1/37 ,  A61N1/08 ,  A61N1/362

CPC classification number: A61N1/3931 ,  A61N1/08 ,  A61N1/362 ,  A61N1/3706 ,  A61N1/3943 ,  A61N1/3962 ,  A61N2001/083

Abstract: An implantable medical device capable of sensing cardiac signals and delivering cardiac electrical stimulation therapies is enabled to detect a short circuit condition. In one embodiment, a cardiac signal is sensed by a sensing module coupled to electrodes. A controller identifies signal events in response to the cardiac signal and detects a short circuit condition in response to at least one of the signal events having an amplitude crossing a short circuit detection threshold and a maximum of two signal events crossing the short circuit detection threshold occurring between two adjacent events having amplitudes not crossing the short circuit detection threshold. In one embodiment, the signal events are identified from a differential signal determined from the sensed cardiac signal.

Abstract translation: 能够检测心脏信号和输送心脏电刺激疗法的可植入医疗装置能够检测短路状况。 在一个实施例中，通过耦合到电极的感测模块来感测心脏信号。 控制器响应于心脏信号识别信号事件，并且响应于至少一个具有与短路检测阈值相交的幅度的信号事件和与发生短路检测阈值的两个信号事件的最大值的两个信号事件中的至少一个来检测短路状况 在具有不超过短路检测阈值的幅度的两个相邻事件之间。 在一个实施例中，根据从感测的心脏信号确定的差分信号识别信号事件。

公开(公告)号：US20140350621A1

公开(公告)日：2014-11-27

申请号：US14458534

申请日：2014-08-13

Applicant: Medtronic, Inc.

Inventor： Bruce D. Gunderson ,  Marshall S. Stanton

IPC: A61N1/08 ,  A61N1/05 ,  A61N1/39

CPC classification number: A61N1/08 ,  A61N1/3706 ,  A61N1/3925 ,  A61N2001/083

Abstract: An implantable medical device capable of sensing cardiac signals and delivering cardiac electrical stimulation therapies is enabled to detect a short circuit of a medical electrical lead. A physiological signal correlated to a motion of a patient is sensed via a physiological sensor. If a lead monitoring condition is met based on the physiological signal, a cardiac signal is acquired and analyzed to detect an abnormality. The short circuit of the medical electrical lead is detected in response to detecting the abnormality.

Abstract translation: 能够感测心脏信号并递送心脏电刺激疗法的可植入医疗装置能够检测医用电线的短路。 通过生理传感器感测与患者运动相关的生理信号。 如果基于生理信号满足导联监测条件，则获取并分析心脏信号以检测异常。 响应于检测到异常而检测医用电线的短路。

公开(公告)号：US20140277229A1

公开(公告)日：2014-09-18

申请号：US13835600

申请日：2013-03-15

Applicant: MEDTRONIC, INC.

Inventor： Bruce D. Gunderson

IPC: A61N1/39 ,  A61N1/37

CPC classification number: A61N1/3931 ,  A61N1/08 ,  A61N1/362 ,  A61N1/3706 ,  A61N1/3943 ,  A61N1/3962 ,  A61N2001/083

Abstract: An implantable medical device capable of sensing cardiac signals and delivering cardiac electrical stimulation therapies is enabled to detect a short circuit condition. In one embodiment, a cardiac signal is sensed by a sensing module coupled to electrodes. A controller identifies signal events in response to the cardiac signal and detects a short circuit condition in response to at least one of the signal events having an amplitude crossing a short circuit detection threshold and a maximum of two signal events crossing the short circuit detection threshold occurring between two adjacent events having amplitudes not crossing the short circuit detection threshold. In one embodiment, the signal events are identified from a differential signal determined from the sensed cardiac signal.

Abstract translation: 能够检测心脏信号和输送心脏电刺激疗法的可植入医疗装置能够检测短路状况。 在一个实施例中，通过耦合到电极的感测模块来感测心脏信号。 控制器响应于心脏信号识别信号事件，并且响应于至少一个具有与短路检测阈值相交的幅度的信号事件和与发生短路检测阈值的两个信号事件的最大值的两个信号事件中的至少一个来检测短路状况 在具有不超过短路检测阈值的幅度的两个相邻事件之间。 在一个实施例中，根据从感测的心脏信号确定的差分信号识别信号事件。

公开(公告)号：US08792971B2

公开(公告)日：2014-07-29

申请号：US13668673

申请日：2012-11-05

Applicant: Medtronic, Inc.

Inventor： Bruce D. Gunderson ,  Amisha S. Patel ,  Chad A. Bounds ,  Mark L. Brown

IPC: A61B5/0456 ,  A61B5/0464 ,  A61N1/362 ,  A61N1/37

CPC classification number: A61B5/0456 ,  A61B5/0464 ,  A61B5/7217 ,  A61B5/7239 ,  A61B5/7264 ,  A61N1/3622 ,  A61N1/3702 ,  A61N1/3704

Abstract: A method for identifying oversensing in implantable medical devices (IMDs), such as implantable cardioverter defibrillators (ICDs), is described. A near-field electrogram signal and a far-field electrogram signal are obtained via a near-field electrode pair and a far-field electrode pair. The near-field electrogram signal is compared to the far-field electrogram signal and a determination of whether oversensing exists is made based on the comparison. In some instances, a scheduled therapy is withheld in response to determining that oversensing exists.

Abstract translation: 描述了用于识别可植入医疗装置（IMD）中的过度感测的方法，例如可植入的心律转复除颤器（ICD）。 通过近场电极对和远场电极对获得近场电描记信号和远场电描记信号。 将近场电描记信号与远场电描记信号进行比较，并且基于比较确定是否存在是否过载。 在某些情况下，针对确定存在过敏而拒绝预定的治疗。

公开(公告)号：US20130304160A1

公开(公告)日：2013-11-14

申请号：US13803302

申请日：2013-03-14

Applicant: MEDTRONIC, INC.

Inventor： Bruce D. Gunderson ,  Walter H. Olson ,  ShaileshKumar V. Musley ,  Jennifer P. Miller

IPC: A61N1/372

CPC classification number: A61N1/372 ,  A61N1/08 ,  A61N2001/083 ,  F04C2270/041

Abstract: A technique for identifying lead-related conditions, such as insulation breaches and/or externalization of lead conductors, includes analyzing characteristics of electrical signals generated on one or more electrode sensing vectors of the lead by a test signal to determine whether a lead-related condition exists. The characteristics of the electrical signals induced on the lead by the test signal may be significantly different on a lead having an insulation breach or externalized conductor than on a lead not having such lead-related conditions. As such, the implantable medical device may be subject to a known test signal and analyze the signals on the lead to detect lead-related conditions.

Abstract translation: 用于识别引线相关条件（例如绝缘破坏和/或引线导体外部化）的技术包括通过测试信号分析在引线的一个或多个电极感测向量上产生的电信号的特性，以确定引线相关条件 存在 通过测试信号在引线上感应的电信号的特性在具有绝缘破裂或外部导体的导线上可能会明显地不同于不具有这种铅相关条件的导线。 因此，可植入式医疗装置可以受到已知的测试信号的影响，并分析引线上的信号以检测引线相关的状况。