公开(公告)号：US20240325766A1

公开(公告)日：2024-10-03

申请号：US18739308

申请日：2024-06-10

Applicant: Medtronic, Inc.

Inventor： Xusheng ZHANG ,  Paul J. DEGROOT

IPC: A61N1/39 ,  A61B5/00 ,  A61B5/352 ,  A61B5/353 ,  A61B5/363 ,  A61N1/365 ,  A61N1/37

CPC classification number: A61N1/3956 ,  A61B5/00 ,  A61B5/352 ,  A61B5/353 ,  A61B5/363 ,  A61B5/4836 ,  A61B5/6869 ,  A61B5/7278 ,  A61B5/7282 ,  A61N1/36507 ,  A61N1/3987 ,  A61N1/3704

Abstract: A cardiac medical system, such as an implantable cardioverter defibrillator (ICD) system, receives a cardiac electrical signal by and senses cardiac events when the signal crosses an R-wave sensing threshold. The system determines at least one sensed event parameter from the cardiac electrical signal for consecutive cardiac events sensed by the sensing circuit and compares the sensed event parameters to P-wave oversensing criteria. The system detects P-wave oversensing in response to the sensed event parameters meeting the P-wave oversensing criteria; and adjusts at least one of an R-wave sensing control parameter or a therapy delivery control parameter in response to detecting the P-wave oversensing.

公开(公告)号：US20240189602A1

公开(公告)日：2024-06-13

申请号：US18444625

申请日：2024-02-16

Applicant: Medtronic, Inc.

Inventor： Gavin M. MISCHLER ,  Yuanzhen LIU ,  Saul E. GREENHUT ,  Xusheng ZHANG

IPC: A61N1/362 ,  A61B5/352 ,  A61B5/363 ,  A61N1/365 ,  A61N1/37

CPC classification number: A61N1/3621 ,  A61B5/352 ,  A61B5/363 ,  A61N1/365 ,  A61N1/3704 ,  A61N1/3706

Abstract: A medical device is configured to detect an alternating pattern of signal features determined from consecutive segments of a cardiac electrical signal and determine a gross morphology metric from at least one segment of the cardiac electrical signal. The device is configured to detect cardiac event oversensing in response to detecting the alternating pattern and the gross morphology metric not meeting tachyarrhythmia morphology criteria. The medical device may withhold detecting an arrhythmia in response to detecting the cardiac event oversensing.

公开(公告)号：US20240050755A1

公开(公告)日：2024-02-15

申请号：US18496781

申请日：2023-10-27

Applicant: Medtronic, Inc.

Inventor： Xusheng ZHANG ,  Yuanzhen LIU

IPC: A61N1/37 ,  A61N1/39 ,  A61B5/363 ,  A61B5/341 ,  A61B5/00 ,  A61N1/362

CPC classification number: A61N1/3702 ,  A61N1/39622 ,  A61B5/363 ,  A61B5/341 ,  A61B5/4836 ,  A61B5/7435 ,  A61N1/3625 ,  A61B2560/02

Abstract: A medical device processor is configured to receive a first cardiac electrical signal sensed from a first sensing electrode vector, receive a second cardiac electrical signal sensed from a second sensing electrode vector different than the first sensing electrode vector, and construct a third cardiac electrical signal from the first cardiac electrical signal and the second cardiac electrical signal. In some examples, the system determines sensed cardiac events according to at least one setting of a cardiac event sensing threshold control parameter from at least the third cardiac electrical signal and may determine at least one acceptable setting of a sensing control parameter based on the determined sensed cardiac events. The processor may generate an output representative of the determined sensed cardiac events.

公开(公告)号：US20230264035A1

公开(公告)日：2023-08-24

申请号：US18311861

申请日：2023-05-03

Applicant: Medtronic, Inc.

Inventor： Jian CAO ,  Saul E. GREENHUT ,  Xusheng ZHANG

IPC: A61N1/39 ,  A61B5/00 ,  A61B5/35 ,  A61B5/283 ,  A61B5/316 ,  A61B5/341 ,  A61B5/349 ,  A61B5/352 ,  A61B5/363

CPC classification number: A61N1/3956 ,  A61B5/4836 ,  A61B5/686 ,  A61B5/7221 ,  A61B5/35 ,  A61B5/283 ,  A61B5/316 ,  A61B5/341 ,  A61B5/349 ,  A61B5/352 ,  A61B5/363 ,  A61N1/3925 ,  A61N1/3987 ,  A61B5/364

Abstract: A medical device, 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 acquired by a second sensing channel in response to each sensed R-wave. The ICD determines morphology match scores from the stored time segments of the second cardiac electrical signal and, based on the morphology match scores, withholds detection of a tachyarrhythmia episode. In some examples, the ICD detects T-wave oversensing based on the morphology match scores and withholds detection of a tachyarrhythmia episode in response to detecting the T-wave oversensing.

公开(公告)号：US20210267527A1

公开(公告)日：2021-09-02

申请号：US17321167

申请日：2021-05-14

Applicant: Medtronic, Inc.

Inventor： James D. REINKE ,  Xusheng ZHANG ,  Vinod SHARMA ,  Vladimir P. NIKOLSKI ,  Michael B. TERRY ,  Scott A. HARELAND ,  Daniel L. HANSEN ,  Donna M. SALMI

IPC: A61B5/363 ,  A61B5/316 ,  A61B5/00 ,  A61N1/37

Abstract: In situations in which an implantable medical device (e.g., a subcutaneous ICD) is co-implanted with a leadless pacing device (LPD), it may be important that the subcutaneous ICD knows when the LPD is delivering pacing, such as anti-tachycardia pacing (ATP). Techniques are described herein for detecting, with the ICD and based on the sensed electrical signal, pacing pulses and adjusting operation to account for the detected pulses, e.g., blanking the sensed electrical signal or modifying a tachyarrhythmia detection algorithm. In one example, the ICD includes a first pace pulse detector configured to obtain a sensed electrical signal and analyze the sensed electrical signal to detect a first type of pulses having a first set of characteristics and a second pace pulse detector configured to obtain the sensed electrical signal and analyze the sensed electrical signal to detect a second type of pulses having a second set of characteristics.

公开(公告)号：US20210196966A1

公开(公告)日：2021-07-01

申请号：US17105787

申请日：2020-11-27

Applicant: Medtronic, Inc.

Inventor： Jian CAO ,  Saul E. GREENHUT ,  Xusheng ZHANG

IPC: A61N1/39 ,  A61B5/00 ,  A61B5/35 ,  A61B5/283 ,  A61B5/316 ,  A61B5/341 ,  A61B5/349 ,  A61B5/352 ,  A61B5/363

Abstract: A medical device, 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 acquired by a second sensing channel in response to each sensed R-wave. The ICD determines morphology match scores from the stored time segments of the second cardiac electrical signal and, based on the morphology match scores, withholds detection of a tachyarrhythmia episode. In some examples, the ICD detects T-wave oversensing based on the morphology match scores and withholds detection of a tachyarrhythmia episode in response to detecting the T-wave oversensing.

公开(公告)号：US20200178830A1

公开(公告)日：2020-06-11

申请号：US16792466

申请日：2020-02-17

Applicant: Medtronic, Inc.

Inventor： Xusheng ZHANG ,  Jian CAO ,  Saul E. GREENHUT

IPC: A61B5/0464 ,  A61B5/0452 ,  A61B5/04 ,  A61N1/39 ,  A61B5/00 ,  A61B5/021 ,  A61B5/0456 ,  A61N1/37 ,  A61N1/362 ,  A61N1/365

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.

公开(公告)号：US20180028085A1

公开(公告)日：2018-02-01

申请号：US15653969

申请日：2017-07-19

Applicant: Medtronic, Inc.

Inventor： Xusheng ZHANG ,  Jian CAO ,  Saul E. GREENHUT

IPC: A61B5/0452 ,  A61B5/021 ,  A61N1/39

CPC classification number: A61B5/0464 ,  A61B5/02108 ,  A61B5/0245 ,  A61B5/04011 ,  A61B5/04012 ,  A61B5/04017 ,  A61B5/0452 ,  A61B5/0456 ,  A61B5/4836 ,  A61B5/7203 ,  A61N1/3621 ,  A61N1/365 ,  A61N1/3702 ,  A61N1/3704 ,  A61N1/3925 ,  A61N1/3956 ,  A61N1/3962 ,  A61N1/3987 ,  H03H21/0012

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.

公开(公告)号：US20160113536A1

公开(公告)日：2016-04-28

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 ,  A61B5/042 ,  A61B5/0205 ,  A61B5/0452 ,  A61B5/0472 ,  A61B5/00 ,  A61N1/39 ,  A61B5/0456

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：US20150297905A1

公开(公告)日：2015-10-22

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: A61N1/39 ,  A61N1/372 ,  A61N1/362 ,  A61N1/05 ,  A61N1/375 ,  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.

Abstract translation: 描述了使用皮下植入式心律转复除颤器（SICD）和无引线起搏装置（LPD）监测心律不齐和递送电刺激治疗的技术和系统。 例如，SICD可以检测来自心脏的第一电信号内的快速性心律失常，并且基于快速性心律失常确定将抗心律失常休克疗法递送给患者以治疗所检测到的心律失常。 LPD可以接收来自SICD的通信，请求LPD向心脏提供抗心动过速起搏，并且基于由LPD感测到的心脏的第二电信号确定是否将心动过速（ATP）提供给心脏。 以这种方式，SICD和LPD可以通信以协调ATP和/或心脏复律/除颤疗法。 在另一个示例中，LPD可以被配置为在检测到抗快速性心律失常性休克疗法的递送之后递送后冲击起搏。