C. R. Bard, Inc.

Biosense Webster, Inc.

St. Jude Medical International Holding S.a.r.l.

Endosense Sa

St. Jude Medical Luxembourg Holding S.a.r.l.

Dipen Shah

Kristine B Fuimaono

Giovanni Leo

David P MacAdam

Paul J Wang

Maria G Rangel

Hendrik Lambert

Shawn X Yang

A method and apparatus that utilizes a force-time integral for real time estimation of lesion size in catheter-based ablation systems. The apparatus measures the force exerted by a contact ablation probe on a target tissue and integrates the force over an energization time of the ablation probe. The force-time integral can be calculated and utilized to provide an estimated lesion size (depth, volume and/or area) in real time. The force-time integral may also account for variations in the power delivered to the target tissue in real time to provide an improved estimation of the lesion size. In one embodiment, the force metric can be used as feedback to establish a desired power level delivered to the probe to prevent steam popping.

Method and apparatus for controlling lesion size in catheter-based ablation treatment

Method and apparatus for controlling lesion size in catheter-based ablation

A system and a computed implemented methodology is disclosed for processing electrical signals recorded from the heart and, more particularly, for objectively deriving sub-components and comparing signals and their sub-components.

Systems for processing electrocardiac signals having superimposed complexes

An improved basket catheter is provided that is particularly useful for mapping the heart. The catheter comprises an elongated catheter body having proximal and distal ends and at least one lumen therethrough. A basket-shaped electrode assembly is mounted at the distal end of the catheter body. The basket assembly has proximal and distal ends and comprises a plurality of spines connected at their proximal and distal ends. Each spine comprises at least one electrode. The basket assembly has an expanded arrangement wherein the spines bow radially outwardly and a collapsed arrangement wherein the spines are arranged generally along the axis of the catheter body. The catheter further comprises a distal location sensor mounted at or near the distal end of the basket-shaped electrode assembly and a proximal location sensor mounted at or near the proximal end of the basket-shaped electrode assembly. In use, the coordinates of the distal location sensor relative to those of the proximal sensor can be determined and taken together with known information pertaining to the curvature of the spines of the basket-shaped mapping assembly to find the positions of the at least one electrode of each spine.

Basket catheter with multiple location sensors

Computer implemented methods and associated systems are disclosed for processing electrical signals recorded from the heart and, more particularly, for objectively deriving sub-components and comparing signals and their sub-components.

Methods for processing electrocardiac signals having superimposed complexes

Growing community of inventors

Geneva, Switzerland

Dipen Shah