公开(公告)号：US20230173279A1

公开(公告)日：2023-06-08

申请号：US18054137

申请日：2022-11-09

Applicant: Medtronic, Inc.

Inventor： Xusheng ZHANG ,  Saul E. GREENHUT ,  Yuanzhen LIU ,  Alfonso ARANDA HERNANDEZ ,  Michael W. HEINKS ,  Jean E. HUDSON ,  Timothy A. EBELING ,  Irving J. SANCHEZ ,  Scott R. HAWKINSON ,  Troy E. JACKSON ,  James VANDER HEYDEN

IPC: A61N1/362 ,  A61B5/363 ,  A61N1/365

CPC classification number: A61N1/362 ,  A61B5/363 ,  A61N1/36507

Abstract: A medical device is configured to determine tachyarrhythmia evidence in a cardiac signal segment received from a cardiac electrical signal sensed during a pacing escape interval started to schedule a pending cardiac pacing pulse. The medical device may delay the pending cardiac pacing pulse in response to determining the tachyarrhythmia evidence during the pacing escape interval.

公开(公告)号：US20230148939A1

公开(公告)日：2023-05-18

申请号：US18045135

申请日：2022-10-07

Applicant: Medtronic, Inc.

Inventor： Alfonso ARANDA HERNANDEZ ,  Timothy A. EBELING ,  Saul E. GREENHUT ,  Troy E. JACKSON ,  Yuanzhen LIU ,  Irving J. SANCHEZ ,  James A. VANDER HEYDEN ,  Xusheng ZHANG

IPC: A61B5/363 ,  A61N1/365 ,  A61N1/362

CPC classification number: A61B5/363 ,  A61N1/365 ,  A61N1/3621

Abstract: A medical device is configured to determine an amplitude metric from a cardiac signal segment sensed over a predetermined time interval and determine if the amplitude metric meets an amplitude threshold. The medical device is configured to perform a first analysis of the cardiac electrical signal segment for detecting a first arrhythmia when the amplitude metric does not meet the amplitude threshold and perform a second analysis of the cardiac electrical signal segment for detecting a second arrhythmia different than the first arrhythmia in response to the amplitude metric meeting the amplitude threshold.

公开(公告)号：US20190247673A1

公开(公告)日：2019-08-15

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

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

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：US20160228026A1

公开(公告)日：2016-08-11

申请号：US14615699

申请日：2015-02-06

Applicant: Medtronic, Inc.

Inventor： Troy E. JACKSON

IPC: A61B5/0464 ,  A61B5/00 ,  A61B5/11 ,  A61N1/37 ,  A61N1/39

CPC classification number: A61B5/0464 ,  A61B5/1118 ,  A61B5/686 ,  A61N1/0587 ,  A61N1/3622 ,  A61N1/371 ,  A61N1/37205 ,  A61N1/3937

Abstract: Techniques for determining paced cardiac depolarization waveform morphological templates are described. For example, an implantable medical device (IMD) may sense a cardiac electrogram of a heart, identify cardiac depolarizations within the cardiac electrogram, and determine that the cardiac depolarizations are paced cardiac depolarizations resulting from delivery of a pacing pulse to the heart by another IMD without detecting the pacing pulse and without communicating with the other IMD. The IMD may identify paced cardiac depolarization waveforms of the paced cardiac depolarizations, determine a paced cardiac depolarization waveform morphological template based on the identified paced cardiac depolarization waveforms, determine a normal cardiac depolarization waveform morphological template based on the paced cardiac depolarization waveform morphological template, and compare the normal cardiac depolarization waveform morphological template to subsequent cardiac depolarization waveforms. The IMD may detect a cardiac tachyarrhythmia based on the above comparison.

Abstract translation: 描述了用于确定起搏心脏去极化波形形态模板的技术。 例如，可植入医疗装置（IMD）可以感测心脏的心脏电图，识别心脏电图中的心脏去极化，并且确定心脏去极化是由心脏去极化引起的，由心脏由另一个IMD递送到起搏脉冲 而不检测起搏脉冲，而不与其他IMD通信。 IMD可以鉴定节奏心脏去极化的节奏心脏去极化波形，基于所识别的起搏心脏去极化波形确定起搏心脏去极化波形形态模板，基于起搏心脏去极化波形态模板确定正常心脏去极化波形态模板，以及 将正常心脏去极化波形态模板与随后的心脏去极化波形进行比较。 IMD可以基于上述比较来检测心脏快速性心律失常。