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    Systems and methods for mapping electrical activity in the heart
    4.
    发明授权
    Systems and methods for mapping electrical activity in the heart 有权

    公开(公告)号：US11147496B2

    公开(公告)日：2021-10-19

    申请号：US16249162

    申请日：2019-01-16

    申请人： Boston Scientific Scimed Inc.

    发明人： Alireza Ghodrati ,  Nathan H. Bennett ,  Brian Stewart

    IPC分类号： A61B5/04 ,  A61B5/042 ,  A61B5/06 ,  A61B5/00 ,  A61B5/044 ,  A61B5/341 ,  A61B5/287 ,  A61B5/316 ,  A61B5/339

    摘要： A system including a catheter including multiple, spatially distributed electrodes configured to measure electrical signals of a heart, a system configured to determine a position of the electrodes at multiple, different catheter positions in the heart, and a processing unit for mapping electrical activity in the heart. The processing unit is configured to receive the measured electrical signals from each position of the multiple, different catheter positions and determine whether the measured electrical signals at the position are organized. If the measured electrical signals at the position are organized, the processing unit is configured to determine at least one of velocity vectors, cycle length, and degree of organization at the position from the measured electrical signals.

    Filtering device for recording electrophysiological signals
    5.
    发明授权
    Filtering device for recording electrophysiological signals 有权

    公开(公告)号：US11129559B2

    公开(公告)日：2021-09-28

    申请号：US16341717

    申请日：2017-10-13

    申请人： CathVision ApS

    发明人： Mads Emil Matthiesen ,  Sigge Nejst Larsen ,  Victor Shadbolt ,  Harold Wodlinger

    IPC分类号： A61B5/0428 ,  A61B5/042 ,  A61B18/14 ,  A61B5/304 ,  A61B5/287 ,  A61B18/00 ,  A61B18/12

    摘要： A switchable filter device for use in a system for recording electro-physiological signals. The filter device includes a plurality of recording channels, the recording channels having an ablation recording channel. Each recording channel has a patient side terminal at a patient interface and a corresponding recording side terminal at a recording device interface. Each recording channel includes a first signal path with a first frequency dependent transmission characteristic having a first pass band, a second signal path with a second frequency dependent transmission characteristic different from the first frequency dependent transmission characteristic, the second frequency dependent transmission characteristic having a second pass band overlapping the first pass band, and switching devices operable to switch between the first signal path and the second signal path in response to a control signal indicative of a transient interference signal. Preferably, switching from the second signal path to the first signal path is performed with a switching delay after termination of the transient interference signal.

    Automated Graphical Presentation of Electrophysiological Parameters
    7.
    发明申请
    Automated Graphical Presentation of Electrophysiological Parameters 有权

    公开(公告)号：US20210177294A1

    公开(公告)日：2021-06-17

    申请号：US16714046

    申请日：2019-12-13

    申请人： Biosense Webster (Israel) Ltd.

    发明人： Vadim Gliner ,  Alexander Salevich ,  Yair Palti

    IPC分类号： A61B5/0452 ,  A61B5/042 ,  A61B1/00 ,  A61B34/20

    摘要： A medical apparatus includes a probe configured for insertion into a body of a patient. The probe includes electrodes configured to contact tissue of a region within the body. The apparatus further includes a display screen, a position-tracking system configured to acquire position coordinates of the electrodes within the body, and a processor. The processor is configured to acquire electrophysiological signals from the electrodes while they are held stationary in the region, extract electrophysiological parameters from the signals, compute a measure of consistency of the parameters, and render to the display screen a three-dimensional (3D) map of the tissue while superimposing on the map, responsively to the position coordinates, a visual indication of the extracted parameters at the locations for which the measure of consistency satisfied a consistency criterion, and automatically discarding from the map the parameters for which the measure of consistency did not satisfy the consistency criterion.

    METHOD AND DEVICE FOR PROCESSING A CARDIAC SIGNAL
    9.
    发明申请
    METHOD AND DEVICE FOR PROCESSING A CARDIAC SIGNAL 有权

    公开(公告)号：US20210170183A1

    公开(公告)日：2021-06-10

    申请号：US17110904

    申请日：2020-12-03

    申请人： SORIN CRM SAS

    发明人： Elodie Marie ,  Luca Vitali

    IPC分类号： A61N1/37 ,  A61B5/042

    摘要： A method for processing a cardiac signal represented as a function of time includes providing a number n of different threshold levels Ni, with i=1 to n and n being greater than or equal to three; detecting, from a given time T and per threshold level Ni, at least two successive intersections of the cardiac signal with the threshold level Ni, considering a crossing per increasing and/or decreasing value of the cardiac signal with the threshold level Ni; and determining at least one statistical parameter for the cardiac signal from the intersections of the cardiac signal with the at least three different threshold levels Ni. The method may be implemented by a subcutaneous active implantable medical device having a control circuit configured to process a cardiac signal.

    SYSTEM OF EPICARDIAL SENSING AND PACING FOR SYNCHRONIZING A HEART ASSIST DEVICE
    10.
    发明申请
    SYSTEM OF EPICARDIAL SENSING AND PACING FOR SYNCHRONIZING A HEART ASSIST DEVICE 有权

    公开(公告)号：US20210128000A1

    公开(公告)日：2021-05-06

    申请号：US17089333

    申请日：2020-11-04

    申请人： The Regents of the University of California

    发明人： Arash Kheradvar ,  Farshad Raissi Shabari

    IPC分类号： A61B5/042 ,  A61B5/00 ,  A61B5/024 ,  A61B5/11

    摘要： A network of electrodes configured to sense and/or pace the heart, wherein the network of electrodes are in contact with an epicardial surface of the heart, within a wrapping sleeve that assist the heart as a whole, wherein the network of electrodes sense the heart by quantifying intrinsic electrical activities of the heart, and wherein the network of electrodes pace the heart by inducing an electrical impulse to the heart to control its contractile activities. The network may be interfaced with a controller system, wherein the controller uses spatial and temporal electrical activities of the heart muscles to generate electrical impulse to synchronize the wrapping sleeve around the heart with the heart. Also disclosed is a system configured to construct space-time mapping of cardiac electrical activities and/or propagation, and sensing effects of a first assist event of a prior beat and controlling a second assist event.