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公开(公告)号：US20230093600A1
公开(公告)日：2023-03-23
申请号：US17481616
申请日：2021-09-22
摘要： A method includes receiving a set of data points including positions and respective velocities of an activation wave in a tissue region of a cardiac chamber. The set is partitioned into at least two velocity clusters, each velocity cluster characterized by a respective velocity of the activation wave. One or more border curves are estimated, between the at least two clusters. The one or more border curves are indicated to a user as possible lines of block of the activation wave.
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公开(公告)号：US20230087423A1
公开(公告)日：2023-03-23
申请号：US17481600
申请日：2021-09-22
发明人： Yael Buchnik , Vadim Gliner
摘要： A method includes receiving intracardiac electrogram (IEGM) signals measured at a plurality of locations in a region of a heart that contains a His bundle of the heart. The IEGM signals are processed to find respective local activation time (LAT) values. A cluster of the locations is identified at which peaks associated with the LAT values occur later than a defined time. Respective time differences are calculated between times of occurrence of the associated peaks and a reference time. The time differences are compared to a threshold value to retain locations for which the time differences are below the threshold value. The respective IEGM signals are filtered to identify respective high-frequency peaks in the IEGM signals. The high-frequency peaks are cross-corelated to identify a subset of the locations whose high-frequency peaks meet a predefined cross-correlation level. The high-frequency peaks are tagged as His peaks and indicated on a cardiac map.
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公开(公告)号：US20230086060A1
公开(公告)日：2023-03-23
申请号：US17438428
申请日：2021-06-07
摘要： A quantum spin liquid (QSL) electrophysiology device comprising a spontaneous and an induced quantum arrhythmia vacuum states, switchable between them through at least one entangled measurement of one negative differential resistance.
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公开(公告)号：US20230061165A1
公开(公告)日：2023-03-02
申请号：US17462206
申请日：2021-08-31
发明人： Eliyahu Ravuna , Assaf Govari , Tal Haim Bar-on , Elad Azaria , Michael Maydel , Alon Ben Natan
摘要： In one embodiment, a system includes a catheter, at least one position sensor to provide position signal(s) indicative of a position of a distal end of the catheter over time, a first smoothing filter to provide first filtered position signal(s) responsively to the position signal(s) and a first filtering level, a second smoothing filter to provide second filtered position signal(s) responsively to the position signal(s) and a second filtering level, wherein the second filtering level provides more smoothing than the first filtering level, and processing circuitry to find first and second position coordinates of the distal end responsively to the first and second filtered position signal(s), respectively, generate, and render to a display, an anatomical map of a body part responsively to the second position coordinates, and render a representation of the distal end to the display while showing movement of the distal end responsively to the first position coordinates.
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85.发明授权公开(公告)号：US11589795B2
公开(公告)日：2023-02-28
申请号：US17130018
申请日：2020-12-22
发明人： Refael Itah , Natan Sharon Katz , Yaron Kadoshi , Gal Hayam , Elad Nakar , Tal Haim Bar-on , Eliyahu Ravuna , Lior Botzer , Yoav Benaroya , Nuno Miguel Rocha Cortez-Diaz
摘要： A method includes receiving a bipolar signal sensed by a pair of electrodes at a location in a heart of a patient. One or more electrocardiogram (ECG) signals are received, sensed by body-surface electrodes attached to the patient. Two or more successive QRS complexes are identified in the bipolar signal. One or more activations are detected in the bipolar signal, which occur within a window-of-interest that begins at least a given time with respect to the identified QRS complexes. The detected activations are checked whether they are late potentials, by verifying whether (i) the activations do not coincide with a predefined event observed in the ECG signals, and (ii) the activations are repeatable in the successive QRS complexes. In response to deciding that at least one of the detected activations is a late potential, the latest of the at least one of the late potentials is visualized to a user.
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公开(公告)号：US20230036977A1
公开(公告)日：2023-02-02
申请号：US17840256
申请日：2022-06-14
发明人： Qingguo Zeng , Timothy G. Laske , Qing Lou
摘要： In an example, a signal segment evaluator can be programmed to evaluate a morphology of at least one electrophysiological signal to identify a signal segment of interest. The morphology of the signal segment of interest can be indicative of an electrophysiological event of a patient during a respective time interval. A reconstruction engine can be programmed to reconstruct electrophysiological signals on a surface of interest within a body of the patient based on the electrophysiological signals measured from an outer surface of the patient and geometry data representing an anatomy of the patient. A map generator can be programmed to generate a map representing the reconstructed electrophysiological signals on the surface of interest for the respective time interval of the signal segment of interest. A target generator can be programmed to identify a target site within the patient's body based on the map for the electrophysiological event.
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87.发明申请公开(公告)号：US20220233082A1
公开(公告)日：2022-07-28
申请号：US17607713
申请日：2020-04-30
申请人： PACERTOOL AS
发明人： Hans Henrik ODLAND
IPC分类号： A61B5/0215 , A61N1/368 , A61B5/0538 , A61B5/055 , A61B5/327 , A61B5/341 , A61B5/343 , A61B5/349 , A61B5/367 , A61B5/00 , A61N1/36 , A61N1/362
摘要： A method for determining the degree of parallel activation of a heart undergoing pacing includes calculating vectorcardiogram (VCG), or electrocardiogram (ECG), or electrogram (EGM) waveforms from right ventricular pacing (RVp) and left ventricular pacing (LVp). A synthetic biventricular pacing (BIVP) waveform is generated by summing the VCG of the RVp and LVp, or by summing the ECG of the RVp and the LVp, or by summing the EGM of the RVp and the LVp. A corresponding EGM or ECG or VCG waveform from real BIVP is calculated. The method includes comparing the synthetic BIVP waveform and the real BIVP waveform and calculating time to fusion by determining the point in time in which the activation from RVp and LVp meets and the synthetic and the real BIVP curves start to deviate. A delay in time to fusion indicates a higher degree of parallel activation.
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公开(公告)号：US20220192576A1
公开(公告)日：2022-06-23
申请号：US17539384
申请日：2021-12-01
摘要： A medical system is provided. The medical system includes a processing device communicatively coupled to a probe. The processing device operates to cause the medical system receive physiological signals from electrodes of the probe and decompose the physiological signals into near-field component and far-field component by using mutual information from a set of the electrodes. The processing device operates to cause the medical system utilize the near-field components for localizing in time where a wave went under at least one of the plurality of electrodes.
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公开(公告)号：US20220183609A1
公开(公告)日：2022-06-16
申请号：US17437469
申请日：2020-03-11
发明人： Balvinder Handa , Xinyang Li , Fu Siong Ng , Nicholas Peters
摘要： Apparatus for monitoring activation in a heart comprises a probe (100), a plurality of electrodes (102) supported at respective electrode positions on the probe and each arranged to contact a respective detection position on the heart. Each of the electrodes (102) is arranged to detect electrical potential at the respective detection position during movement of a series of activation wavefronts across the heart and to produce a respective electrode signal. Processing means is arranged to analyse the electrode signals to: identify pairs of the electrode signals between which there is a degree of Granger causality; define a causality vector between the electrode positions of each of the pairs of electrodes; identify a potential driver location; and analyse the direction of a plurality of the causality vectors around the potential driver position to generate an indicator of the presence of a driver at the potential driver location.
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公开(公告)号：US20220175302A1
公开(公告)日：2022-06-09
申请号：US17112105
申请日：2020-12-04
发明人： Lior Botzer , Meir Bar-Tal
IPC分类号： A61B5/367 , G16H40/67 , G16H50/50 , G16H50/20 , A61B18/14 , A61B5/00 , A61B5/346 , A61B5/287
摘要： A method is provided. The method is implemented by an interpretation engine executed by processors coupled to a memory. The method includes receiving a bipolar intracardiac reference signal from reference electrodes of a catheter and executing a preprocessing of the bipolar intracardiac reference signal. The method further includes interpreting the bipolar intracardiac reference signal according to a threshold for contact by a reference electrode of the electrodes.
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