Daig Corporation

St Jude Medical, Atrial Fibrillation Division, Inc

Michael J Coyle

John F Swartz

Michael C Bednarek

Richard E Stehr

John D Ockuly

Mark W Kroll

James A Hassett

Steven E Scott

Michael L Hofstad

A process for the treatment of atrial arrhythmia by use of ablation procedures comprising circumferential ablation of vessels, particularly pulmonary veins associated with the left atrium of the heart. Also disclosed are medical devices used for formation of the circumferential ablation lesions in vessels associated with the heart.

Process and device for the treatment of atrial arrhythmia

An ablation system for ablating cardiac tissue within a chamber of the human heart including a guiding introducer system, a rail, one end of which is contained within the guiding introducer system, and an ablation catheter system which is supported by the guiding introducer system. The guiding introducer system may be a single or multiple guiding introducers. The ablation system may include a slotted sheath which passes over the rail which supports the ablation catheter. A process is disclosed for ablation of cardiac tissue to form a linear lesion utilizing a rail catheter ablation and mapping system which includes a guiding introducer, a rail and an ablation catheter system advanced over the rail.

Rail catheter ablation and mapping system

A coronary sinus catheter includes a distal electrode portion with optimally-spaced and sized ring electrodes and a proximal electrode portion with at least one optimally-spaced and sized larger surface electrode. The catheter has all or some of the following features. First, at least one ring electrode of the distal electrode portion includes a first diameter less than a second diameter of at least one, more proximally disposed, ring electrode of the distal electrode portion. Second, at least one ring electrode of the distal electrode portion includes a first width less than a second width of at least one, more proximally disposed, ring electrode of the distal electrode portion. Third, the distal electrode portion includes at least two ring electrodes and the proximal shock electrode includes at least two larger surface coil electrodes. Fourth, the catheter further includes a collapsible section, adjacent the proximal electrode portion, to facilitate positioning of the catheter within the right atrium.

Temporary atrial cardioversion catheter

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Minneapolis, MN, United States of America

Michael J Coyle