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公开(公告)号：US20240285216A1
公开(公告)日：2024-08-29
申请号：US18435005
申请日：2024-02-07
发明人： Jonathan Yarnitsky , Talia Alon , Lior Greenbaum
摘要： Methods and systems for electrophysiological measurement involve obtaining signals that indicate cardiac electrical activity by using electrodes in contact with the body tissues of a living patient. These signals are then processed to identify local activation times at the electrodes. The identified local activation times are displayed as traces representing the signals over time on a display screen. The brightness of specific trace segments within a designated time window, encompassing the identified local activation times, may be increased relative to segments outside the time window. The method provides flexibility in signal acquisition, allowing for the use of intracardiac electrogram signals acquired within the heart or electrocardiogram signals acquired from the body surface. This method enhances visibility and enables efficient analysis of cardiac activity traces for diagnostic and monitoring purposes.
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公开(公告)号：US20220387100A1
公开(公告)日：2022-12-08
申请号：US17341315
申请日：2021-06-07
IPC分类号： A61B18/14
摘要： In one embodiment, a medical system includes a catheter configured to be inserted into a chamber of a heart of a living subject, and including multiple electrodes configured to capture electrical activity from electrical activation signals propagating in tissue of the chamber, a display, and processing circuitry configured to automatically select bipolar signals to be captured into an electro-anatomical map from respective electrode pairs of the multiple electrodes responsively to an alignment of the respective electrode pairs with a direction of propagation of the electrical activation signals, and render the electro-anatomical map to the display.
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公开(公告)号：US20220370794A1
公开(公告)日：2022-11-24
申请号：US17672780
申请日：2022-02-16
发明人： Leonid Zaides , Elad Nakar , Eliyahu Ravuna , Fady Massarwi , Jonathan Yarnitsky , Lior Greenbaum
摘要： A method includes, based on respective signals acquired by a plurality of electrodes on an anatomical surface of a heart, computing respective local activation times (LATs) at respective locations of the electrodes. The method further includes, based on the LATs, computing respective directions of electrical propagation at the locations. The method further includes selecting pairs of adjacent ones of the electrodes such that, for each of the pairs, a vector joining the pair is aligned, to within a predefined threshold degree of alignment, with the direction of electrical propagation at the location of one of the electrodes belonging to the pair. The method further includes associating respective bipolar voltages measured by the pairs of electrodes with a digital model of the anatomical surface. Other examples are also described.
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公开(公告)号：US20220370016A1
公开(公告)日：2022-11-24
申请号：US17672774
申请日：2022-02-16
发明人： Leonid Zaides , Elad Nakar , Eliyahu Ravuna , Yoav Benaroya , Fady Massarwi , Jonathan Yarnitsky , Lior Greenbaum
摘要： A method includes obtaining multiple local activation times (LATs) at different respective measurement locations on an anatomical surface of a heart. The method further includes computing respective directions of electrical propagation at one or more sampling locations on the anatomical surface, by, for each sampling location, selecting a respective subset of the measurement locations for the sampling location, constructing a set of vectors, each of at least some of the vectors including, for a different respective measurement location in the subset, three position values derived from respective position coordinates of the measurement location and an LAT value derived from the LAT at the measurement location, and computing the direction of electrical propagation at the sampling location based on a Principal Component Analysis (PCA) of a 4×4 covariance matrix for the set of vectors. The method further includes indicating the directions of electrical propagation on a display.
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公开(公告)号：US20210369174A1
公开(公告)日：2021-12-02
申请号：US17328216
申请日：2021-05-24
发明人： Eliyahu Ravuna , Elad Nakar , Lior Botzer , Jonathan Yarnitsky , Iddo Lev
摘要： A system and method for training a neural network to automatically detect a cardiac structure of interest including a processor comprising a neural network training model that receives training data. The training data comprises a first input comprising first electrophysiological data regarding a first cardiac structure received by an electrode of a first catheter positioned within a heart, and a second input comprising a second data relating to the first cardiac structure. The neural network training model generates, as an output, a determination of whether the first cardiac structure is the cardiac structure of interest based on the training data.
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公开(公告)号：US20230277112A1
公开(公告)日：2023-09-07
申请号：US18107751
申请日：2023-02-09
CPC分类号： A61B5/367 , A61B5/339 , A61B5/7221 , A61B5/7475 , A61B5/287 , A61B5/6852
摘要： A system for generating an electrophysiological (EP) map includes a display and a processor. The processor is configured to (i) receive multiple EP data points comprising respective locations and EP values, generated from signals acquired by one or more electrodes of a catheter that are in contact with tissue of a cardiac chamber, (ii) score the received data points with respective quality scores, (iii) for a given unit volume of the EP map, select, from among the data points whose locations fall in the unit volume, a data point with a highest quality score, for use in generating the EP map, and (iv) visualize the EP map to a user, on the display.
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公开(公告)号：US20210391082A1
公开(公告)日：2021-12-16
申请号：US17342321
申请日：2021-06-08
发明人： Yariv Avraham Amos , Matityahu Amit , Stanislav Goldberg , Lior Botzer , Jonathan Yarnitsky , Elad Nakar , Eliyahu Ravuna
摘要： A method is provided. The method is implemented by a detection engine embodied in processor executable code stored on a memory and executed by at least one processor. The method includes modeling a vector velocity field that measures and quantifies a velocity of electrocardiogram data signals that pass through a local activation time. The method further includes determining codes for each point in plane to provide a color code vector field image; detecting focal and rotor indications by using kernels to scan the color coded vector field image; and classifying the focal and rotor indications into perpetuators.
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公开(公告)号：US20210169359A1
公开(公告)日：2021-06-10
申请号：US16952943
申请日：2020-11-19
发明人： Meir Bar-Tal , Vladimir Rubinstein , Jonathan Yarnitsky , Elad Nakar , Amiram Ben-Dor , Aharon Turgeman
IPC分类号： A61B5/046 , A61B5/00 , A61B5/04 , A61B5/06 , A61B5/0488
摘要： Methods, apparatuses, and systems for intra-cardiac pattern matching are disclosed. A unipolar pattern intra-cardiac (IC) electromyography (EGM) signals is received for an area of a heart from a plurality of activity channels corresponding to a plurality of electrodes of a catheter. A window of interest (WOI) of the IC EGM signals is received representing an entire cycle length for a single heartbeat. A pattern of interest (POI) is selected to include a portion of WOI corresponding to an arrhythmia activation. A template POI is generated representative of the arrhythmia activation. Subsequent electrical activity is received, weights are applied and the subsequent electrical activity is compared with the template POI. A correlation score is generated and compared with a threshold correlation score.
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公开(公告)号：US20230334077A1
公开(公告)日：2023-10-19
申请号：US18212847
申请日：2023-06-22
发明人： Jonathan Yarnitsky , Elad Nakar , Lior Greenbaum , Goren Cohn , Amiram Ben Dor
摘要： In one embodiment, a medical system includes respective electrodes for application to a body of a subject and to output a set of respective activation signals in response to electrical activity of a heart of the subject captured over a sequence of heartbeat intervals, and a processor to classify a first heartbeat interval of the set of activation signals as a first morphological template, compute a measure of similarity between a second heartbeat interval of the set of activation signals and the first morphological template, group the second heartbeat interval of the set of activation signals in a first morphological group with the first morphological template responsively to the measure exceeding a predefined threshold, and classify the second heartbeat interval of the set of activation signals as a second morphological template responsively to the measure not exceeding the predefined threshold, and repeat the above, mutatis mutandis, for subsequent heartbeat intervals.
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10.发明申请公开(公告)号：US20220125523A1
公开(公告)日：2022-04-28
申请号：US17404725
申请日：2021-08-17
摘要： A method is provided. The method is implemented by a device orientation engine being executed by one or more processors. The method includes determining a movement between each electrode group of a catheter to provide movements and determining a total movement of electrodes of the catheter. The method also includes removing a standard component from the movements and the total movement and outputting a movement indication for the catheter based on the movements and the total movement with the standard component.
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