公开(公告)号：US12128244B2

公开(公告)日：2024-10-29

申请号：US17540217

申请日：2021-12-01

申请人： WEST AFFUM HOLDINGS DAC

发明人： Zhong Qun Lu ,  Douglas K. Medema ,  Kenneth F. Cowan

IPC分类号： A61N1/04 ,  A61N1/37 ,  A61N1/39

CPC分类号： A61N1/3904 ,  A61N1/046 ,  A61N1/0484 ,  A61N1/3704 ,  A61N1/3968

摘要： Embodiments of a wearable cardioverter defibrillator (WCD) system are configured to monitor a patient's ECG for shockable arrhythmias and deliver a shock to the patient in response to such a detection. To monitor the patient's ECG with reduced signal noise to improve the system's performance, the system includes a cable assembly having: a signal line; an inner shield and an outer shield; an ECG electrode electrically connected to the signal line of the cable assembly; and an amplifier having first and second input nodes respectively connected to the signal line and the outer shield of the cable assembly. The amplifier's output node is electrically connected to the inner shield of the cable assembly to reduce the reactive load seen by the patient's heart in driving the ECG sensing circuitry, which reduces the noise on the ECG signal outputted by the amplifier.

公开(公告)号：US12011598B2

公开(公告)日：2024-06-18

申请号：US17407534

申请日：2021-08-20

申请人： Medtronic, Inc.

发明人： Xusheng Zhang ,  Jian Cao

IPC分类号： A61N1/36 ,  A61B5/352 ,  A61B5/363 ,  A61N1/362 ,  A61N1/365 ,  A61N1/37 ,  A61N1/39

CPC分类号： A61N1/3621 ,  A61B5/352 ,  A61B5/363 ,  A61N1/3624 ,  A61N1/36592 ,  A61N1/3704 ,  A61N1/39622

摘要： Techniques are described for discriminating SVT and, in particular, rapidly conducting AF. The techniques include detecting an onset of a fast rate of ventricular events sensed from a cardiac electrical signal and detecting a pause in the fast rate of ventricular sensed events. A threshold number of ventricular event intervals required to detect a ventricular tachyarrhythmia is detected with each of the threshold number of ventricular event intervals being less than a tachyarrhythmia detection interval. Detection of the ventricular tachyarrhythmia and an electrical stimulation therapy for treating the ventricular tachyarrhythmia are withheld in response to at least the pause being detected.

公开(公告)号：US20240181265A1

公开(公告)日：2024-06-06

申请号：US18440703

申请日：2024-02-13

申请人： Pacesetter, Inc.

发明人： Xiaoyi Min ,  Weiqun Yang ,  Benjamin T. Persson ,  Nima Badie ,  Kyungmoo Ryu ,  Gabriel Mouchawar

IPC分类号： A61N1/372 ,  A61N1/02 ,  A61N1/05 ,  A61N1/365 ,  A61N1/368 ,  A61N1/37 ,  A61N1/375

CPC分类号： A61N1/37288 ,  A61N1/025 ,  A61N1/36507 ,  A61N1/3688 ,  A61N1/3704 ,  A61N1/3706 ,  A61N1/3756 ,  A61N1/056

摘要： Described herein are methods for use with an implantable system including at least an atrial leadless pacemaker (aLP). Also described herein are specific implementations of an aLP, as well as implantable systems including an aLP. In certain embodiments, the aLP senses a signal from which cardiac activity associated with a ventricular chamber can be detected by the aLP itself based on feature(s) of the sensed signal. The aLP monitors the sensed signal for an intrinsic or paced ventricular activation within a ventricular event monitor window. In response to the aLP detecting an intrinsic or paced ventricular activation itself from the sensed signal within the ventricular event monitor window, the aLP resets an atrial escape interval timer that is used by the aLP to time delivery of an atrial pacing pulse if an intrinsic atrial activation is not detected within an atrial escape interval.

公开(公告)号：US11931585B2

公开(公告)日：2024-03-19

申请号：US17109968

申请日：2020-12-02

申请人： Medtronic, Inc.

发明人： Gavin M. Mischler ,  Yuanzhen Liu ,  Saul E. Greenhut ,  Xusheng Zhang

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

CPC分类号： A61N1/3621 ,  A61B5/352 ,  A61B5/363 ,  A61N1/365 ,  A61N1/3704 ,  A61N1/3706

摘要： 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：US20230181911A1

公开(公告)日：2023-06-15

申请号：US18167795

申请日：2023-02-10

申请人： Medtronic, Inc.

发明人： Jian CAO ,  Wade M. DEMMER ,  Maureen E. LYBARGER ,  Elizabeth A. MATTSON ,  Todd J. SHELDON ,  Zhongping YANG ,  Xiaohong ZHOU

IPC分类号： A61N1/365 ,  A61N1/37

CPC分类号： A61N1/36507 ,  A61N1/3706 ,  A61N1/3714 ,  A61N1/3704

摘要： A medical device is configured to sense a cardiac electrical signal and determine from the cardiac electrical signal at least one of a maximum peak amplitude of a positive slope of the cardiac electrical signal and a maximum peak time interval from a pacing pulse to the maximum peak amplitude. The device is configured to determine a capture type of the pacing pulse based on at least one or both of the maximum peak amplitude and the maximum peak time interval.

公开(公告)号：US20230145628A1

公开(公告)日：2023-05-11

申请号：US17915316

申请日：2021-03-15

申请人： BIOTRONIK SE & Co. KG

发明人： René FISCHER ,  Tobias THEILER

IPC分类号： A61B5/353 ,  A61B5/33 ,  A61B5/304 ,  A61N1/37

CPC分类号： A61B5/353 ,  A61B5/33 ,  A61B5/304 ,  A61N1/3704 ,  A61B2503/40

摘要： Implantable medical device configured to detect an atrial electric signal of a heart, and a ventricular electric signal of the same heart. Atrial events are evaluated in the atrial electric signal detected by a first detection unit and/or ventricular events are evaluated in the ventricular electric signal detected by a second detection unit for recognizing a condition of the device in which atrial electric signals are insufficiently detected.
Evaluation is done by applying at least one of:



morphology of the detected atrial electric signals;
lacking stability of atrial events;
absence of atrial events over a period of time;
an amplitude of the detected atrial electric signal being lower than a predefined threshold value;
absence of atrial events during detection of ventricular electric signals simultaneously;
comparison of atrial events sensed with first and second sensing profiles, the second being more sensitive than the first.

公开(公告)号：US20190201698A1

公开(公告)日：2019-07-04

申请号：US16238275

申请日：2019-01-02

申请人： Cardiac Pacemakers, Inc.

发明人： Keith L. Herrmann ,  Deepa Mahajan ,  Stephen J. Hahn ,  Allan Charles Shuros

IPC分类号： A61N1/37 ,  A61N1/368

CPC分类号： A61N1/3706 ,  A61N1/365 ,  A61N1/368 ,  A61N1/3702 ,  A61N1/3704 ,  A61N1/371 ,  A61N1/3712

摘要： Systems and methods for cardiac pacing are described in this document. A medical system includes an electrostimulation circuit to generate His-bundle pacing (HBP) pulses to capture a His bundle, and LV pacing (LVP) pulses to capture a left ventricle. A sensing circuit may sense a cardiac activity, such as an atrial or an LV cardiac electrical activity. The system includes a control circuit controlling the delivery of HBP and LVP pulses. The HBP and LVP may be delivered concurrently or sequentially. In an example, the LVP pulses may be delivered based on a His-bundle capture status in response to the HBP pulse. The system may adjust one or more His-bundle stimulation parameters based on the His-bundle capture status.

公开(公告)号：US20180280683A1

公开(公告)日：2018-10-04

申请号：US15477731

申请日：2017-04-03

申请人： BIOSENSE WEBSTER (ISRAEL) LTD.

发明人： LIOR BOTZER ,  Amir Ben-Dor ,  Yoram Chmiel ,  Aharon Turgeman ,  Liron Shmuel Mizrahi ,  Noga Salomon ,  Galia Givaty

IPC分类号： A61N1/00 ,  A61N1/365 ,  A61N1/36 ,  A61N1/362 ,  A61N1/37

CPC分类号： A61N1/00 ,  A61B5/0245 ,  A61B5/0402 ,  A61B5/0452 ,  A61B5/0538 ,  A61B5/062 ,  A61B5/063 ,  A61B5/6852 ,  A61B5/6885 ,  A61B2562/06 ,  A61N1/36 ,  A61N1/362 ,  A61N1/3622 ,  A61N1/36521 ,  A61N1/3704 ,  A61N1/3706

摘要： A method includes acquiring a bipolar signal from a first electrode and a second electrode contacting a first location and a second location, respectively, in a heart of a living subject. The method further includes acquiring a unipolar signal from the first electrode while in contact with the first location, and deriving from the bipolar signal and the unipolar signal a point in time at which the first location is generating the unipolar signal. The method also includes computing a metric for a conduction velocity of the unipolar signal at the first location based on a shape of the unipolar signal at the point in time.

公开(公告)号：US10080901B2

公开(公告)日：2018-09-25

申请号：US15486725

申请日：2017-04-13

申请人： Cardiac Pacemakers, Inc.

发明人： Alok S. Sathaye ,  M. Jason Brooke ,  Bruce Alan Tockman

IPC分类号： A61B5/04 ,  H03H17/02 ,  A61N1/368 ,  A61N1/365 ,  A61N1/05 ,  A61N1/37 ,  A61N1/372

CPC分类号： A61N1/3686 ,  A61N1/056 ,  A61N1/0563 ,  A61N1/08 ,  A61N1/36514 ,  A61N1/36564 ,  A61N1/36585 ,  A61N1/3702 ,  A61N1/3704 ,  A61N1/371 ,  A61N1/37223 ,  A61N1/37247 ,  A61N2001/083

摘要： Approaches for selecting an electrode combination of multi-electrode pacing devices are described. Electrode combination parameters that support cardiac function consistent with a prescribed therapy are evaluated for each of a plurality of electrode combinations. Electrode combination parameters that do not support cardiac function are evaluated for each of the plurality of electrode combinations. An order is determined for the electrode combinations based on the parameter evaluations. An electrode combination is selected based on the order, and therapy is delivered using the selected electrode combination.

公开(公告)号：US10016609B2

公开(公告)日：2018-07-10

申请号：US15660489

申请日：2017-07-26

申请人： CAMERON HEALTH, INC.

发明人： Rick Sanghera ,  Venugopal Allavatam

IPC分类号： A61B5/02 ,  A61B5/04 ,  A61N1/00 ,  A61N1/372 ,  A61N1/37 ,  A61N1/39 ,  A61B5/00 ,  A61N1/368 ,  A61B5/042 ,  A61B5/11 ,  A61N1/365

CPC分类号： A61N1/37247 ,  A61B5/04011 ,  A61B5/042 ,  A61B5/1116 ,  A61B5/7221 ,  A61N1/36535 ,  A61N1/368 ,  A61N1/37 ,  A61N1/3702 ,  A61N1/3704 ,  A61N1/3925 ,  A61N1/3956

摘要： Methods, implantable medical devices and systems configured to perform analysis of captured signals from implanted electrodes to identify cardiac arrhythmias. In an illustrative embodiment, signals captured from two or more sensing vectors are analyzed, where the signals are captured with a patient in at least first and second body positions. Analysis is performed to identify primary or default sensing vectors and/or templates for event detection.