Biosense Webster (israel) Ltd.

Biosense Webster, Inc.

University of Oklahoma

Georgia Tech Research Corporation

Dalhousie University

Université De Bordeaux

Biosense Webster (isreal) Ltd.

Centre Hospitalier Universitaire (chu) De Bordeaux

Fondation Bordeaux Universit&#xe9;

Meir Bar-Tal

Daniel Osadchy

Roy Urman

Avram Dan Montag

Assaf Govari

Richard P M Houben

Yaniv Ben Zriham

Shmuel Auerbach

Gal Hayam

Yevgeny Bonyak

Abraham Berger

Yigal Ultchin

Doron Moshe Ludwin

Vladimir Rubinstein

Avri Hazan

Jeffrey L Clark

Michael Levin

Lior Botzer

Elad Nakar

Dror Shlomo Levy

Yaniv Ben Zrihem

Yaron Ephrath

Shubhayu Basu

Aharon Turgeman

Ziyad Zeidan

George Kamin

Mark Stanley

Avi Reuveni

Stanislav Goldberg

Natan Sharon Katz

Ronen Krupnik

Stuart Williams

Debby Esther Highsmith

Tal Haim Bar-on

Assaf Pressman

Yariv Avraham Amos

Assaf Rubissa

Curt R Eyster

Andres Claudio Altmann

Yitzhack Schwartz

Ariel Garcia

Ryan A Hoitink

Christopher Thomas Beeckler

Joseph Thomas Keyes

Yaacov Nitzan

Thomas V Selkee

Yaron Keidar

Thanh Tri Nguyen

Keshava Datta

Benjamin Cohen

Eran Hirszowicz

Assaf Cohen

Debby Esther Grunewald

Eliahu Zino

Ricardo Padilla

Anand R Rao

Hiroshi Nakagawa

Morris Ziv-Ari

Shiran Eliyahu

Rajesh Pendekanti

Avi Shalgi

Alaa Zoubi

Dror Levy

David Izraeli

William Sanford Krimsky

Jeffrey William Schultz

Mario A Solis

Carlo Pappone

Lior Zar

F Levent Degertekin

Daniele Ghidoli

Babak Ebrahimi

Noam Racheli

Robert D Ainsworth

Michel Haissaguerre

Ido Ilan

Moshe Ingel

Pieter Emmelius Van Niekerk

Yoav Pinsky

Liron Shmuel Mizrahi

Gil Zigelman

Eyal Rotman

Oshrat Ben Zaken

Shaul Haim Raz

Jonathan Reuben Waldstreicher

Mati Amit

Matityahu Amit

Eitan Peri

Dror Trumer

Noam Seker Gafni

Alexander A Goldin

Itai Doron

Maria Duarte

Yochai Parchak

Oleg Dulger

Goren Cohn

Alek Vilensky

Refael Itah

Dror Berman

Meleze Hocini

Described embodiments include a system that includes a current source generator and a processor. The processor is configured to drive the current source generator to supply, for application to tissue of a subject, an electric current having an amplitude that varies in accordance with a predefined function of time, such that the amplitude initially monotonically increases to a maximum value. Other embodiments are also described.

Using a predetermined ablation-current profile

Distal portion of catheter

A system for use with ultrasound transducers on a catheter and connected to different respective channels includes circuitry and a processor. The circuitry is configured to receive a signal, which includes transduction of ultrasound reflections, over any given one of the channels, and to receive respective noise-signals, which include less transduction of ultrasound reflections than the signal, over a group of others of the channels. The processor is configured to receive the signal and the noise-signals from the circuitry, and to reduce noise in the signal, by, based on the noise-signals, computing, for the given channel, one or more noise-estimation functions, each of which is applicable to a respective subset of the noise-signals so as to return an estimate of noise received over the given channel while the subset of the noise-signals were received, using the noise-estimation functions, computing an estimated-noise signal, and subtracting the estimated-noise signal from the signal.

Reducing electromagnetic noise in ultrasound signals

A method is provided. The method is implemented by a mapping engine. The method includes receiving biometric data of at least a portion of an anatomical structure from at least a catheter and analyzing the biometric data based on an automatic tagging operation, a time weighted local activation time assignment operation, or a discrimination operation. The method also includes determining scar tissue of the portion of the anatomical structure based on the analyzing of the biometric data.

Signal and correction processing for anatomical structure mapping data

A catheter for electrophysiology applications is disclosed herein that includes a tubular member and an end effector. The end effector is coupled to a distal portion of the tubular member. The end effector includes first, second, and third loop members configured so that the first loop member defines a first plane, the second loop member defines a second plane at an angle to the first plane, and the third loop member defines a third plane at an angle to the first plane and at an angle to the second plane. Each of the first, second, and third loop members are configured as a respective single axis magnetic coil, and the first, second, and third loop members are collectively configured to function as a three axis magnetic sensor.

Mapping grid with high density electrode array

A position sensor includes a flexible substrate formed into a three-dimensional (3D) shape. At least first and second field-sensing coils are formed in first and second respective layers of the flexible substrate, such that in the 3D shape the first and second field-sensing coils have first and second respective axes that are not parallel to one another.

Multi-axial position sensors printed on a folded flexible circuit board

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.

Configuring perimeter of balloon electrode as location sensor

Classification of heartbeats based on intracardiac and body surface electrocardiogram (ECG) signals are provided. Intracardiac ECG (IC-ECG) signals and body surface ECG (BS-ECG) signals are processed to perform heartbeat classifications. A BS annotation of BS-ECG signals reflective of a sensed heartbeat is defined, the BS annotation including a BS annotation time value. IC annotations of IC-ECG signals which reflect atrial-activity or ventricular activity of the sensed heartbeat are also defined, each IC annotation including an IC annotation time value. The IC-ECG signals are discriminated as A-activity or V-activity and IC annotations are designated as IC-A annotations or IC-V annotations, respectively. A respective A/V time sequence comparison of IC annotations reflective of the sensed heartbeat is made with one or more time sequence templates for heartbeat classification. Morphology comparisons of the BS-ECG oscillating signal segments reflective of the sensed heartbeat morphology templates for classification may also be made.

Apparatus and method for heartbeat classification based on time sequence and morphology of intracardiac and body surface electrocardiogram (ECG) signals

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.

Catheter frame pieces used as large single axis sensors

An irrigated ablation catheter adapted for direct tissue contact has micro-elements that provide more accurate sensing of tissue, including thermal and electrical properties for temperature and impedance measurements. The micro-elements extend through a hollow chamber of an irrigated ablation electrode, and distal ends thereof can protrude outside of electrode or be flush with the electrode. The micro-elements have a protective guide tube in which components enabling temperature sensing or electrical sensing are encased.

Catheter adapted for direct tissue contact

Systems, devices, and techniques are disclosed for automatically generating CPM matrices. The system includes a plurality of body surface electrodes configured to sense electric signals and a processor comprising a neural network. The processor is configured to receive a plurality of historical CPM matrices, patient properties, and corresponding catheter locations, train a learning system based on the plurality of CPM matrices, patient properties, and corresponding catheter locations, generate a model based on the learning system, receive new patient properties at least in part from the plurality of body surface electrodes and generate new CPM matrices based on new patient properties at least in part from the plurality of body surface electrodes.

System and method to determine the location of a catheter

A catheter adapted or high density mapping and/or ablation of tissue surface has a distal electrode matrix having a plurality of spines arranged in parallel configuration on which a multitude of electrodes are carried in a grid formation for providing uniformity and predictability in electrode placement on the tissue surface. The matrix can be dragged against the tissue surface upon deflection (and/or release of the deflection) of the catheter. The spines generally maintain their parallel configuration and the multitude of electrodes generally maintain their predetermined relative spacing in the grid formation as the matrix is dragged across the tissue surface in providing very high density mapping signals. The spines may have free distal ends, or distal ends that are joined to form loops for maintaining the spines in parallel configuration.

Catheter with high density electrode spine array

Methods, apparatus, and systems for medical procedures are disclosed herein for receiving an input of a plurality of measured coordinates of a respective plurality of position transducers of a probe inside a body of a subject, receiving a measured voltage measurement output by the probe, determining a cost function based on a model of known mechanical properties of the probe compared to the measured coordinates with respect to shapes that can be assumed by the probe in the body and further based on an expected voltage value compared to the measured voltage measurement, selecting a shape based on the cost function, generating corrected coordinates of the points along the probe based on the shape and displaying a representation of the probe using the corrected coordinates.

Catheter shape and position detection using flexible magnetic sensor

A catheter is responsive to external and internal magnetic field generators for generating position data of the catheter position and pressure data to determine pressured exerted on a distal end of the catheter when engaged with tissue, with a reduced number of sensing coils and reduced number of sensing coil leads for minimizing lead breakage and failure. The catheter includes a distal section adapted for engagement with patient tissue, where the distal section has a proximal portion, a distal portion and a flexible joint with a resilient member adapted to allow axial displacement and angular deflection between the proximal and distal portions of the distal section. The catheter may have three or less sensing coils with three or less leads, each transmitting signals between a respective sensing coil and the signal processor.

Catheter with combined position and pressure sensing structures

A method for calibrating a medical device is provided. The method implemented by a calibration engine executed by one or more processors. The method includes capturing one or more voltage measurements by one or more components of a catheter, estimating calibration data based on the one or more voltage measurements, and outputting the calibration data to the catheter.

Managing medical device equipment by online magnetic calibration of a catheter

Growing community of inventors

Haifa, Israel

Meir Bar-Tal