公开(公告)号：US10137295B2

公开(公告)日：2018-11-27

申请号：US15860310

申请日：2018-01-02

Applicant: Medtronic, Inc.

Inventor： Mark T. Marshall ,  Jian Cao ,  Melissa G. T. Christie ,  Paul J. DeGroot ,  Vladimir P. Nikolski ,  Amy E. Thompson-Nauman

IPC: A61N1/00 ,  A61N1/05 ,  A61N1/39

Abstract: Implantable medical electrical leads having electrodes arranged such that a defibrillation coil electrode and a pace/sense electrode(s) are concurrently positioned substantially over the ventricle when implanted as described. The leads include an elongated lead body having a distal portion and a proximal end, a connector at the proximal end of the lead body, a defibrillation electrode located along the distal portion of the lead body, wherein the defibrillation electrode includes a first electrode segment and a second electrode segment proximal to the first electrode segment by a distance. The leads may include at least one pace/sense electrode, which in some instances, is located between the first defibrillation electrode segment and the second defibrillation electrode segment.

公开(公告)号：US09956423B2

公开(公告)日：2018-05-01

申请号：US15140802

申请日：2016-04-28

Applicant: Medtronic, Inc.

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

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

CPC classification number: A61N1/3987 ,  A61B5/042 ,  A61B5/0464 ,  A61N1/3925 ,  A61N1/3956

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：US09636512B2

公开(公告)日：2017-05-02

申请号：US14932311

申请日：2015-11-04

Applicant: Medtronic, Inc.

Inventor： Can Cinbis ,  Vladimir P. Nikolski ,  Jian Cao ,  James K. Carney ,  Melissa G. T. Christie ,  Richard J. O'Brien ,  Amy E. Thompson-Nauman

IPC: A61N1/39 ,  A61N1/362 ,  A61N1/05

CPC classification number: A61N1/3962 ,  A61N1/0587 ,  A61N1/3621 ,  A61N1/3918 ,  A61N1/3987

Abstract: This disclosure provides an extravascular ICD system and method for defibrillating a heart of a patient. The extravascular ICD system includes multiple extravascular electrical stimulation leads or lead segments located in close proximity to one another and having respective defibrillation electrodes. The ICD system utilizes the multiple defibrillation electrodes to form an extravascular electrode vector that may result a reduction in the shock impedance and/or a reduction in the DFT compared to extravascular ICD systems that include only a single extravascular defibrillation electrode. An ICD of the system may, for example, deliver a defibrillation shock using an electrode vector in which a first polarity of the electrode vector is formed by electrically coupling first and second defibrillation electrodes of first and second leads, respectively, to the therapy circuitry and a second polarity of the electrode vector is formed by electrically coupling a housing of the ICD to the therapy circuitry.

公开(公告)号：US20160213275A1

公开(公告)日：2016-07-28

申请号：US14604468

申请日：2015-01-23

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Paul J. DeGroot

IPC: A61B5/0456 ,  A61B5/046

CPC classification number: A61B5/0456 ,  A61B5/04525 ,  A61B5/046 ,  A61B5/4836 ,  A61B5/686

Abstract: A method and medical device for detecting a cardiac event that includes sensing a cardiac signal, determining RR-intervals in response to the sensed cardiac signal, detecting a cardiac event in response to the RR-intervals, iteratively sensing a predetermined number of P-waves in response to detecting the cardiac event, and confirming the cardiac event in response to the iteratively sensed P-waves.

Abstract translation: 一种用于检测心脏事件的方法和医疗装置，包括感测心脏信号，响应于感测的心脏信号确定RR间隔，响应于RR间隔检测心脏事件，迭代地感测预定数量的P波 响应于检测心脏事件，以及响应于迭代感测的P波确认心脏事件。

公开(公告)号：US20160213270A1

公开(公告)日：2016-07-28

申请号：US15004202

申请日：2016-01-22

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Paul J. Degroot

IPC: A61B5/04 ,  A61N1/362 ,  A61B5/00 ,  A61N1/39 ,  A61B5/046 ,  A61B5/0464

CPC classification number: A61B5/04012 ,  A61B5/04525 ,  A61B5/046 ,  A61B5/0464 ,  A61B5/686 ,  A61B5/7264 ,  A61B5/7282 ,  A61N1/3624 ,  A61N1/3702 ,  A61N1/3956 ,  A61N1/3987 ,  G06F19/00

Abstract: A method and medical device for detecting a cardiac event that includes sensing a cardiac signal, identifying R-waves in the cardiac signal attendant ventricular depolarizations, determining RR-intervals between successive R-waves in response to the sensed cardiac signal, detecting an atrial tachyarrhythmia based on an analysis of the RR-intervals, iteratively sensing groups of a predetermined number of P-waves attendant atrial depolarizations in response to detecting the atrial tachyarrhythmia, and confirming the atrial tachyarrhythmia based on an analysis of the iteratively sensed groups of P-waves.

Abstract translation: 一种用于检测心脏事件的方法和医疗装置，包括感测心脏信号，识别伴随的心室去极化的心脏信号中的R波，响应于感测到的心脏信号确定连续R波之间的RR间隔，检测心房快速性心律失常 基于RR间期的分析，响应于检测到心房快速性心律失常，迭代地感测预定数量的P波伴随的心房去极化的组，以及基于迭代感测的P波组的分析来确认心房快速性心律失常 。

公开(公告)号：US20160113577A1

公开(公告)日：2016-04-28

申请号：US14520938

申请日：2014-10-22

Applicant: Medtronic, Inc.

Inventor： Jian Cao ,  Elise Higgins

IPC: A61B5/00 ,  A61B5/046 ,  A61B5/04

CPC classification number: A61B5/046 ,  A61B5/04012 ,  A61N1/3962

Abstract: A method and medical device for determining a cardiac episode that includes sensing a cardiac signal, identifying the signal sensed during a predetermined time interval as one of a cardiac event, a non-cardiac event, and an unclassified event, determining a number of identified cardiac events, determining a number of identified unclassified events, and determining whether the cardiac episode is occurring in response to the number of identified cardiac events being greater than a cardiac event count threshold and the number of identified unclassified events being less than an unclassified event count threshold.

Abstract translation: 一种用于确定心脏发作的方法和医疗装置，包括感测心脏信号，将在预定时间间隔期间感测到的信号识别为心脏事件，非心脏事件和未分类事件之一，确定识别的心脏的数量 事件，确定多个已识别的未分类事件，以及确定心脏发作是否响应于所识别的心脏事件的数量大于心脏事件计数阈值而发生，并且所识别的未分类事件的数量小于未分类的事件计数阈值 。