公开(公告)号：US20210236828A1

公开(公告)日：2021-08-05

申请号：US17234746

申请日：2021-04-19

Applicant: MEDTRONIC, INC.

Inventor： Hyun J. Yoon ,  Wade M. Demmer ,  Matthew J. Hoffman ,  Robert A. Betzold ,  Jonathan D. Edmonson ,  Michael L. Ellingson ,  Ben W. Herberg ,  Juliana E. Pronovici ,  James D. Reinke ,  Todd J. Sheldon ,  Paul R. Solheim

IPC: A61N1/37 ,  A61N1/39

Abstract: Implantable medical systems enter an exposure mode of operation, either manually via a down linked programming instruction or by automatic detection by the implantable system of exposure to a magnetic disturbance. A controller then determines the appropriate exposure mode by considering various pieces of information including the device type including whether the device has defibrillation capability, pre-exposure mode of therapy including which chambers have been paced, and pre-exposure cardiac activity that is either intrinsic or paced rates. Additional considerations may include determining whether a sensed rate during the exposure mode is physiologic or artificially produced by the magnetic disturbance. When the sensed rate is physiologic, then the controller uses the sensed rate to trigger pacing and otherwise uses asynchronous pacing at a fixed rate.

公开(公告)号：US11033743B2

公开(公告)日：2021-06-15

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

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：US20210154477A1

公开(公告)日：2021-05-27

申请号：US17105603

申请日：2020-11-26

Applicant: Medtronic, Inc.

Inventor： Andrea J. Asleson ,  Wade M. Demmer ,  Nathan A. Grenz ,  Ruth N. Klepfer ,  Alexander R. Mattson ,  Kevin Seifert ,  Zhongping Yang

IPC: A61N1/368 ,  A61N1/05 ,  A61B17/34 ,  A61N1/375

Abstract: Systems, devices, and methods may be used to deliver and provide cardiac pacing therapy to a patient. Leads or leadlets carrying one or more left ventricular electrodes may be positioned in or near the interventricular septum to sense and pace left ventricular signals of the patient's heart. In one example, a leadlet including one or more left ventricular electrodes may extend in the coronary sinus from a leadless implantable medical device located in the right atrium.

公开(公告)号：US10350426B2

公开(公告)日：2019-07-16

申请号：US16056676

申请日：2018-08-07

Applicant: Medtronic, Inc.

Inventor： Todd J. Sheldon ,  Wade M. Demmer ,  Teresa A. Whitman

IPC: A61B5/00 ,  A61N1/39 ,  A61N1/362 ,  A61N1/365 ,  A61B5/0464

Abstract: An implantable medical device system includes a pacemaker and an implantable cardioverter defibrillator (ICD). The pacemaker is configured to confirm a hemodynamically unstable rhythm based on an activity metric determined from an activity sensor signal after detecting a ventricular tachyarrhythmia and withhold anti-tachycardia pacing (ATP) pulses in response to confirming the hemodynamically unstable rhythm. The pacemaker may deliver ATP when a hemodynamically unstable rhythm is not confirmed based on the activity metric. The ICD is configured to detect the ATP and withhold a shock therapy in response to detecting the ATP in some examples.

公开(公告)号：US10265534B2

公开(公告)日：2019-04-23

申请号：US15334410

申请日：2016-10-26

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

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：US20180085589A1

公开(公告)日：2018-03-29

申请号：US15280538

申请日：2016-09-29

Applicant: Medtronic, Inc.

Inventor： Vincent E. Splett ,  Todd J. Sheldon ,  Yong K. Cho ,  Wade M. Demmer ,  Mark K. Erickson

IPC: A61N1/365 ,  A61N1/368 ,  A61N1/375

CPC classification number: A61N1/36578 ,  A61N1/056 ,  A61N1/36542 ,  A61N1/36585 ,  A61N1/3682 ,  A61N1/3684 ,  A61N1/37205 ,  A61N1/37512 ,  A61N1/3756

Abstract: An intracardiac ventricular pacemaker is configured to detect a ventricular diastolic event from a motion signal received by a pacemaker control circuit from a motion sensor. The control circuit starts an atrial refractory period having an expiration time set based on a time of the detection of the ventricular diastolic event. The control circuit detects an atrial systolic event from the motion signal after expiration of the atrial refractory period and controls a pulse generator of the pacemaker to deliver a pacing pulse to a ventricle of a patient's heart at a first atrioventricular pacing time interval after the atrial systolic event detection.

公开(公告)号：US20170312502A1

公开(公告)日：2017-11-02

申请号：US15142814

申请日：2016-04-29

Applicant: MEDTRONIC, INC.

Inventor： Hyun J. Yoon ,  Michael L. Ellingson ,  Wade M. Demmer ,  Jonathan D. Edmonson ,  Matthew J. Hoffman ,  Ben W. Herberg ,  James D. Reinke ,  Todd J. Sheldon ,  Paul R. Solheim ,  Alison M. Seacord

IPC: A61N1/08 ,  A61N1/39 ,  A61N1/37

CPC classification number: A61N1/08 ,  A61N1/3718 ,  A61N1/3931

Abstract: Implantable medical devices automatically switch from a normal mode of operation to an exposure mode of operation and back to the normal mode of operation. The implantable medical devices may utilize hysteresis timers in order to determine if entry and/or exit criteria for the exposure mode are met. The implantable medical devices may utilize additional considerations for entry to the exposure mode such as a confirmation counter or a moving buffer of sensor values. The implantable medical devices may utilize additional considerations for exiting the exposure mode of operation and returning to the normal mode, such as total time in the exposure mode, patient position, and high voltage source charge time in the case of devices with defibrillation capabilities.

公开(公告)号：US09788756B2

公开(公告)日：2017-10-17

申请号：US14691036

申请日：2015-04-20

Applicant: Medtronic, Inc.

Inventor： Wade M. Demmer

IPC: A61N1/00 ,  A61B5/06 ,  A61N1/37 ,  A61B5/00 ,  A61N1/372

CPC classification number: A61B5/061 ,  A61B5/0031 ,  A61B5/062 ,  A61B5/6898 ,  A61N1/37 ,  A61N1/37211 ,  A61N1/37235 ,  A61N1/37247

Abstract: Techniques facilitating locating an implantable medical device (IMD) within a body of a patient are provided. An estimate of the location is determined based on strength information representative of strengths of communicative couplings between a communications head device and the IMD at various positions of the communications head device. The strength information can be updated periodically or based on specific events, such as changes to the body and/or an amount of time elapsed since strength information was previously obtained. Media representative of the estimate of the location and an image of the body can be output and can facilitate a patient or caregiver locating the IMD. In some embodiments, the media and image output can guide future placement of the communications head device on the patient to efficiently establish communication. Further, in some embodiments, numerous IMDs implanted within a single body can be identified and communication can commence.

公开(公告)号：US20170056670A1

公开(公告)日：2017-03-02

申请号：US15350708

申请日：2016-11-14

Applicant: Medtronic, Inc.

Inventor： Todd J. Sheldon ,  Wade M. Demmer

IPC: A61N1/365 ,  A61N1/368 ,  A61N1/375

CPC classification number: A61N1/36592 ,  A61N1/3688 ,  A61N1/3756

Abstract: In some examples, a leadless pacing device (hereinafter, “LPD”) is configured for implantation in a ventricle of a heart of a patient, and is configured to switch between an atrio-ventricular synchronous pacing mode and an asynchronous ventricular pacing mode in response to detection of one or more sensing events, which may be, for example, undersensing events. In some examples, an LPD is configured to switch from a sensing without pacing mode to an atrio-ventricular synchronous pacing mode in response to determining, for a threshold number of cardiac cycles, a ventricular depolarization was not detected within a ventricular event detection window that begins at an atrial activation event.

Abstract translation: 在一些示例中，无引线起搏装置（以下称为“LPD”）被配置用于植入患者心脏的心室中，并且被配置为响应于心房间同步起搏模式和异步心室起搏模式之间的切换 以检测一个或多个感测事件，其可以是例如不足感的事件。 在一些示例中，响应于确定对于阈值数量的心动周期，在心室事件检测窗口内未检测到心室去极化，LPD被配置为从不具有起搏模式的感测切换到心室同步起搏模式 从心房激活事件开始。

公开(公告)号：US20160302692A1

公开(公告)日：2016-10-20

申请号：US14691036

申请日：2015-04-20

Applicant: Medtronic, Inc.

Inventor： Wade M. Demmer

IPC: A61B5/06 ,  A61B5/00 ,  A61N1/37

CPC classification number: A61B5/061 ,  A61B5/0031 ,  A61B5/062 ,  A61B5/6898 ,  A61N1/37 ,  A61N1/37211 ,  A61N1/37235 ,  A61N1/37247

Abstract: Techniques facilitating locating an implantable medical device (IMD) within a body of a patient are provided. An estimate of the location is determined based on strength information representative of strengths of communicative couplings between a communications head device and the IMD at various positions of the communications head device. The strength information can be updated periodically or based on specific events, such as changes to the body and/or an amount of time elapsed since strength information was previously obtained. Media representative of the estimate of the location and an image of the body can be output and can facilitate a patient or caregiver locating the IMD. In some embodiments, the media and image output can guide future placement of the communications head device on the patient to efficiently establish communication. Further, in some embodiments, numerous IMDs implanted within a single body can be identified and communication can commence.

Abstract translation: 提供了便于在患者体内定位可植入医疗装置（IMD）的技术。 基于表示通信头装置和通信头装置的各个位置处的IMD之间的通信耦合的强度的强度信息来确定位置的估计。 力量信息可以周期性地或基于特定事件来更新，诸如身体的变化和/或先前获得力量信息所经过的时间量。 可以输出表示身体的位置和图像的估计的媒体，并且可以方便患者或照顾者定位IMD。 在一些实施例中，媒体和图像输出可以指导通信头设备在患者身上的未来放置以有效地建立通信。 此外，在一些实施例中，可以识别植入在单个身体内的许多IMD，并且可以开始通信。