St. Jude Medical, Cardiology Division, Inc.

St Jude Medical, Atrial Fibrillation Division, Inc

Mark Hagfors

Lev Abramovich Koyrakh

Michael A Quinn

Don Curtis Deno

Wenwen Li

Dennis J Morgan

Yuriy Malinin

Daniel Richard Starks

Jatin Surendra Relan

Travis Dahlen

Thomas P Hartley

Luke Chen

Emma K Davis

Steven Kim

Simon T Pranaitis

Nathan A Mullins

An animated electrophysiology map is generated from a plurality of data points, each including measured electrophysiology information, location information, and timing information. The electrophysiology and location information can be used to generate the electrophysiology map, such as a local activation time, peak-to-peak voltage, or fractionation map. Animated timing markers can be superimposed upon the electrophysiology map using the electrophysiology, location, and timing information. For example a series of frames can be displayed sequentially, each including a static image of the electrophysiology map at a point in time and timing markers corresponding to the state or position of an activation wavefront at the point in time superimposed thereon. The visibility or opacity of the timing markers can be adjusted from frame to frame, dependent upon a distance between the timing marker and the activation wavefront, to give the illusion that the timing markers are moving along the electrophysiology map.

System, method, and apparatus for visualizing cardiac timing information using animations

The present disclosure provides an electrophysiology system to facilitate visualizing a proximity of at least one catheter electrode to a 3D geometry of a biological tissue. The system includes a computing device including at least one processor in communication with a memory, wherein the processor is configured to determine the proximity between the at least one catheter electrode and the biological tissue using at least one measurement. The system further includes a display device configured to display the 3D geometry of the biological tissue and a visual effect illustrating the proximity between the at least one catheter electrode and the biological tissue.

System and method for visualizing a proximity of a catheter electrode to a 3D geometry of biological tissue

Electrophysiological activity can be mapped using sub-intervals of electrophsyiological signals. An electroanatomical mapping system receives a plurality of electrophsyiological signals (), each of which spans an activation interval. For each signal, the system identifies an initial event time within the activation interval, such as by identifying a time of maximum signal energy (), and defines a sub-interval about the initial event time (). The system then analyzes the sub-interval to identify one or more electrophysiological characteristics of the electrophysiological signal () and adds a corresponding electrophysiology data point to an electrophysiology map (). Advantageously, the sub-interval can extend outside of the activation interval, such that the instant teachings allow for capture and analysis of deflections that occur at or near the boundaries of the activation interval.

System and method for cardiac mapping

Pulmonary vein isolation has become a first-line treatment for symptomatic drug refractory atrial fibrillation (AF). In the context of PVI procedures, linear ablation lesions are delivered in order to achieve PV isolation. Electrophysiological maps from data collected by high density (HD) grid catheters can be used to identify conduction gaps associated within circumferential pulmonary vein isolation lesions.

System and method for detection and mapping of near field conduction in scar tissue

An electroanatomical mapping system can map electrical activation of tissue, and in particular create a slow conduction map, using a plurality of electrophysiology data points, each including local activation timing information, by computing a slow conduction metric for each point using the local activation timing information. The slow conduction metric can be used to classify points as no conduction points, slow conduction points, and normal conduction points, and the results can be graphically expressed, including as an animated representation of an activation wavefront propagating along a three-dimensional anatomical surface model.

A method of displaying a virtual electrogram for a virtual bipole includes receiving a plurality of electrophysiological signals from a respective plurality of electrodes carried by a multi-dimensional catheter; using the received electrophysiological signals to compute a plurality of virtual electrograms associated with a respective plurality of virtual bipoles, each having a corresponding virtual bipole orientation; selecting a virtual bipole orientation; and displaying the virtual electrogram associated with the virtual bipole having the selected virtual bipole orientation. Aspects of the disclosure can be executed through a graphical user interface of an electroanatomical mapping system that also incorporates a visualization processor.

Growing community of inventors

North Oaks, MN, United States of America

Mark Hagfors