Patents by Inventor Meir Bar Tal

Meir Bar Tal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11896296
    Abstract: The present disclosure provides systems, apparatuses and methods that identify end expirium data based on catheter movement data.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: February 13, 2024
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Kfir Kalman Kozokaro, Meir Bar-Tal, Shiran Eliyahu, Tal Yehezkel
  • Patent number: 11883093
    Abstract: A method, consisting of modeling physical parameters representative of a probe in proximity to body tissue during an ablation procedure performed by the probe. The method also includes measuring a subgroup of the physical parameters during a non-ablation stage of the ablation procedure so as to generate measured non-ablative values of the subgroup, and measuring the subgroup of the physical parameters during an ablation stage of the ablation procedure so as to generate measured ablative values of the subgroup. In response to the modeling, the method includes generating calculated non-ablative values of the subgroup for the non-ablation stage, and generating calculated ablative values of the subgroup for the ablation stage. The method compares the measured non-ablative values with the calculated non-ablative values, and compares the measured ablative values with the calculated ablative values, so as generate optimal values of the physical parameters.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: January 30, 2024
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Meir Bar-Tal, Abraham Berger, Avri Hazan, Daniel Osadchy
  • Patent number: 11877840
    Abstract: An apparatus includes an interface and a processor. The interface is configured for exchanging signals with: (i) a probe, which is inserted into a body of a patient and includes a flexible distal-end assembly, wherein the distal-end assembly comprises a magnetic position sensor and two or more intra-body electrodes, and, (ii) multiple body-surface electrodes attached externally to the body of the patient. The processor is configured to estimate, based on the signals exchanged with the probe, a spatial displacement of the magnetic sensor between consecutive measurements, and to estimate a position of the distal-end assembly in the body based on (i) the signals exchanged with the intra-body electrodes and the body-surface electrodes, (ii) a-priori known spatial relationships between two or more of the intra-body electrodes of the probe and (iii) the estimated spatial displacement of the magnetic sensor.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: January 23, 2024
    Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
    Inventors: Doron Moshe Ludwin, Gal Fleishon, Meir Bar-Tal, Goren Cohn, Menachem Schechter, Daniel Osadchy
  • Patent number: 11857738
    Abstract: A stabilized coronary sinus catheter system having a proximal section and a distal section with a memory shape portion, and a tip, distal of the memory shape portion. A handle having a body, a tip deflection actuator, a memory shape portion deployment actuator, and an axis. The tip is in line with the axis and the tip deflection actuator is at a first position. The tip is deflected out of alignment with the axis when the tip deflection actuator is at a second position. A third position is a delivery configuration where the memory shape portion and the tip are in line with the axis. The memory shape portion deployment actuator is at a first location. A deployed configuration allows the memory shape portion to form a predetermined shape conforming to the shape of the coronary sinus when the memory shape portion deployment actuator is at a second location.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: January 2, 2024
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Debby Highsmith, Meir Bar-Tal, Mohammed Pinnjara
  • Publication number: 20230414280
    Abstract: An expandable balloon, which is coupled to a distal end of a shaft for insertion into an organ of a patient, includes an expandable membrane, one or more electrodes and one or more respective conductive coils. The one or more electrodes are disposed over an external surface of the membrane. The one or more respective conductive coils are each disposed proximate a respective RF ablation electrode. The one or more conductive coils are configured as magnetic sensors.
    Type: Application
    Filed: September 11, 2023
    Publication date: December 28, 2023
    Inventor: Meir Bar-Tal
  • Patent number: 11850051
    Abstract: A catheter is described with an end effector having densely arrayed electrodes on three loops which are arrayed in various planar configurations when the end effector is unconstrained. The end effector has first, second and third loop members, each loop member includes two spines and a connector that connects the two spines to define a loop extending away from a tubular member of the catheter such that the first, second and third loop members are configured so that each connector of each of the first, second and third loop members is in contact with only one connector of the adjacent loop member.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: December 26, 2023
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Thomas Selkee, Keshava Datta, Thanh Nguyen, Anand Rao, Rajesh Pendekanti, Meir Bar-Tal, Ricardo Padilla
  • Publication number: 20230404676
    Abstract: A system including a display and a processor. The processor is configured to: (i) receive multiple position measurements indicative of respective positions of an ablation electrode at respective times during an ablation procedure at an ablation site in an organ of a patient, (ii) estimate, based at least on the multiple position measurements, a quality index indicative of a stability of the ablation procedure at the ablation site, and (iii) visualize the quality index to a user on the display.
    Type: Application
    Filed: May 20, 2022
    Publication date: December 21, 2023
    Inventors: Meir Bar-Tal, Alona Sigal, Aharon Turgeman, Liron Shmuel Mizrahi, Eid Zaknoun, Erez Silberschein
  • Publication number: 20230347141
    Abstract: An atrial flutter identification method includes placing a catheter comprising multiple electrodes in a coronary sinus (CS) of a heart of a patient, so that some of the electrodes overlap a left atrium (LA) of the heart and some of the electrodes overlap a right atrium (RA) of the heart. Intra cardiac (IC) electrophysiological (EP) signals are acquired with the electrodes. Respective signal-stability measures are estimated over the signals acquired by the electrodes overlapping the LA and over the signals acquired by the electrodes overlapping the RA. When one of the signal-stability measures is above a first threshold while the other of the signal-stability measures is below a second threshold, an atrium is indicated, that corresponds to a highest among the signal-stability measures as a source of atrial flutter.
    Type: Application
    Filed: May 2, 2022
    Publication date: November 2, 2023
    Inventor: Meir Bar-Tal
  • Publication number: 20230310074
    Abstract: Methods are disclosed which involve a catheter having a distal end that includes electrically and thermally conducting inner and outer layers, a polymer layer between the inner and outer layers, thermal bridges selectively positioned between the inner and outer layers through the polymer layer to transfer heath between the two layers through the polymer layer. An ablation method includes inserting the distal end into a body of a subject, contacting tissue with the outer layer, passing ablation current via the outer layer into tissue such that heat is transferred to the inner layer via the thermal bridges, and passing irrigation fluid through irrigation channels through the inner layer, outer layer, and polymer layer to evacuate heath from the inner layer into blood.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Inventors: Christopher Thomas BEECKLER, Joseph Thomas KEYES, Assaf GOVARI, Yigal ULTCHIN, Meir BAR-TAL
  • Patent number: 11771359
    Abstract: A system and method of identifying focal sources is presented. The method can comprise detecting, via sensors, electro-cardiogram (ECG) signals over time, each ECG signal detected via one of the sensors having a location in a heart and indicating electrical activity of the heart, each signal comprising at least an R wave and an S wave; creating an R-S map comprising an R-to-S ratio for each of the ECG signals, the R-to-S ratio comprising a ratio of absolute magnitude of the R wave to absolute magnitude of the S wave; identifying, for each of the ECG signals, local activation times (LATs); and correlating the R-to-S ratios for the ECG signals on the R-S map and the identified LATs and using the correlation to identify the focal sources.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: October 3, 2023
    Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
    Inventors: Roy Urman, Meir Bar-Tal, Yaniv Ben Zrihem, Ziyad Zeidan, Gal Hayam, Stanislav Goldberg, Atul Verma, Yariv Avraham Amos, Richard P. M. Houben
  • Patent number: 11751936
    Abstract: An expandable balloon, which is coupled to a distal end of a shaft for insertion into an organ of a patient, includes an expandable membrane, one or more electrodes and one or more respective conductive coils. The one or more electrodes are disposed over an external surface of the membrane. The one or more respective conductive coils are each disposed proximate a respective RF ablation electrode. The one or more conductive coils are configured as magnetic sensors.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: September 12, 2023
    Assignee: Biosense Webster (Israel) Ltd.
    Inventor: Meir Bar-Tal
  • Publication number: 20230255536
    Abstract: A power line interference (PLI) suppression method includes receiving an input analog signal superimposed with PLI, and digitally estimating one or more harmonics of the PLI in real-time. Responsively to the one or more digitally estimated harmonics, one or more analog harmonic waveforms are outputted, that match the respective one or more harmonics of the PLI. The input analog signal and the one or more analog harmonic waveforms are received, and the superimposed PLI in the input analog signal is suppressed using the one or more analog harmonic waveforms. An analog output signal is outputted, that corresponds to the input analog signal having the suppressed PLI.
    Type: Application
    Filed: February 3, 2023
    Publication date: August 17, 2023
    Inventors: Meir Bar-Tal, Michael Levin, Amit Yarimi, Rami Rozen, Alek Vilensky, Yevgeny Bonyak, Lior Botzer, Assaf Govari, Shmuel Auerbach
  • Publication number: 20230248315
    Abstract: Catheterization of the heart is carried out using a framework formed by a plurality of electrically conducting wire loops. The wire loops are modeled as polygons, each subdivided into a plurality of triangles. The wire loops are exposed to magnetic fluxes at respective frequencies, and signals read from the loops. Theoretical magnetic fluxes in the polygons are computed as sums of theoretical magnetic fluxes in the triangles thereof. The location and orientation of the framework in the heart is determined by relating the computed theoretical magnetic fluxes to the signals.
    Type: Application
    Filed: April 7, 2023
    Publication date: August 10, 2023
    Inventors: Avram Dan MONTAG, Meir BAR-TAL
  • Patent number: 11712294
    Abstract: Described embodiments include a catheter tip that includes an outer layer of a thermally-conducting metal; an inner layer of a thermally-conducting metal; a polymer layer between the inner and outer layer; and a plurality of thermal bridges selectively positioned between the inner and outer layers and through the polymer layer thereby significantly increasing the heat transfer of the catheter tip through the polymer layer. Other embodiments are also described.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: August 1, 2023
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Christopher Thomas Beeckler, Joseph Thomas Keyes, Assaf Govari, Yigal Ultchin, Meir Bar-Tal
  • Patent number: 11690551
    Abstract: A method includes, in a processor, receiving example representations of geometrical shapes of a given type of organ. In a training phase, a neural network model is trained using the example representations. In a modeling phase, the trained neural network model is applied to a set of location measurements acquired in an organ of the given type, to produce a three-dimensional model of the organ.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: July 4, 2023
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Alon Baram, Meir Bar-Tal
  • Patent number: 11690556
    Abstract: A method, including receiving a bipolar signal from a pair of electrodes in proximity to a myocardium of a human subject, and receiving a unipolar signal from a selected one of the pair of electrodes. The method further includes delineating a window of interest (WOI) for the unipolar and bipolar signals, within the WOI computing local unipolar minimum derivatives of the unipolar signal, and times of occurrence of the local unipolar minimum derivatives, and within the WOI computing bipolar derivatives of the bipolar signal at the times of occurrence. The method also includes evaluating ratios of the bipolar derivatives to the local unipolar minimum derivatives, and when the ratios are greater than a preset threshold ratio value, assigning the times of occurrence as times of activation of the myocardium, counting a number of the times of activation; and classifying the unipolar signal according to the number.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: July 4, 2023
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Lior Botzer, Meir Bar-Tal, Elad Nakar, Noga Salomon
  • Publication number: 20230181241
    Abstract: An apparatus includes a body and a shaft assembly extending distally from the body. The shaft assembly includes a proximal portion defining a longitudinal axis, a steerable portion distal to the proximal portion, and a distal portion distal to the steerable portion. The steerable portion is operable to drive the distal portion laterally away from and toward the longitudinal axis. The shaft assembly further includes at least one flex circuit assembly. The at least one flex circuit assembly includes a first navigation sensor configured to measure impedance signals that indicate a real-time position of the steerable portion. The at least one flex circuit assembly further includes a second navigation sensor configured to measure magnetic signals that indicate a real-time position of the steerable portion.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 15, 2023
    Inventors: Paul A. Suárez, Debby E. Highsmith, Meir Bar-Tal, Erica E. Lovejoy, Roee Haimovich, Ohad Yakobovitch
  • Patent number: 11660073
    Abstract: Apparatus, including an insertion tube, configured to be inserted into a body cavity and having a first lumen having a first lumen diameter and a distal opening, and a tubular channel, having a second lumen and an outer channel diameter smaller than the first lumen diameter, inserted into the first lumen. The apparatus includes a support structure, configured to be passed through a space between an inner wall of the insertion tube and an outer wall of the tubular channel to the distal opening in a folded state and to unfold, upon exit of the support structure through the distal opening, in a direction transverse to the first lumen to reach a support dimension that is greater than the first lumen diameter. A plurality of planar two-dimensional arrays of ultrasonic transducers are supported by the support structure, the arrays having transverse dimensions less than the first lumen diameter.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: May 30, 2023
    Assignees: GEORGIA TECH RESEARCH CORPORATION, BIOSENSE WEBSTER (ISRAEL) LTD.
    Inventors: F. Levent Degertekin, Meir Bar-Tal
  • Publication number: 20230157615
    Abstract: Systems and methods for optimal selection of beats for a 3D mapping are disclosed. A method in accordance with the present disclosure may be performed on a processor and may comprise receiving a plurality of beats from a catheter. The catheter may be located at a target mapping site, such as a chamber of the heart. A plurality of dynamic filters may be applied to the plurality of collected beats. The optimal beats may be determined and integrated as a beat in the 3D mapping system. This method enables the selection of more beats for a more comprehensive 3D mapping, as well as the selection of more quality beats that are representative of the target anatomy.
    Type: Application
    Filed: November 11, 2022
    Publication date: May 25, 2023
    Applicant: Biosense Webster (Israel) Ltd.
    Inventors: Lior Botzer, Meir Bar-Tal, Guy David Malki
  • Patent number: 11647958
    Abstract: Catheterization of the heart is carried out using a framework formed by a plurality of electrically conducting wire loops. The wire loops are modeled as polygons, each subdivided into a plurality of triangles. The wire loops are exposed to magnetic fluxes at respective frequencies, and signals read from the loops. Theoretical magnetic fluxes in the polygons are computed as sums of theoretical magnetic fluxes in the triangles thereof, The location and orientation of the framework in the heart is determined by relating the computed theoretical magnetic fluxes to the signals.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: May 16, 2023
    Assignee: Biosense Webster (Israel) Ltd.
    Inventors: Avram Dan Montag, Meir Bar-Tal