Biosense Webster (israel) Ltd.

Curt R Eyster

Meir Bar-Tal

Stuart Williams

Shamim Qutubuddin

Shubhayu Basu

Ryan A Hoitink

Matthew W Hitzeroth

Ryan Hoitink

Meiron Atias

Shobhayu Basu

A catheter and associated positioning system can include sensors and software to ascertain the extent of expansion of an expandable distal member of the catheter. Sensors on the distal member can be configured so that the system is able to determine a longitudinal dimension and a radial dimension of the distal-end assembly and determine extent of expansion of the distal member based on those metrics. At least the longitudinal dimension can be derived from advanced current localization (ACL) techniques utilizing an electrode at a distal end of the expandable distal member.

Determining shape of expandable distal member 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

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Alta Loma, CA, United States of America

Curt R Eyster