Surgery – Instruments – Electrical application
Reexamination Certificate
2005-05-31
2005-05-31
Cohen, Lee (Department: 3739)
Surgery
Instruments
Electrical application
C607S099000, C607S113000, C607S122000
Reexamination Certificate
active
06899711
ABSTRACT:
A catheter assembly and method for treatment of cardiac arrhythmia, for example, atrial fibrillation, by electrically isolating a vessel, such as a pulmonary vein, from a chamber, such as the left atrium. The catheter assembly includes a catheter body and at least one electrode. The catheter body includes a proximal portion, an intermediate portion and a distal portion. The intermediate portion extends from the proximal portion and defines a longitudinal axis. The distal portion extends from the intermediate portion and forms a substantially closed loop transverse to the longitudinal axis. The at least one electrode is disposed along the loop. With this configuration, the loop is axially directed into contact with the chamber wall about the vessel ostium. Upon energization, the electrode ablates a continuous lesion pattern about the vessel ostium, thereby electrically isolating the vessel from the chamber.
REFERENCES:
patent: 5860920 (1999-01-01), McGee et al.
patent: 6012457 (2000-01-01), Lesh
patent: 6164283 (2000-12-01), Lesh
patent: 2002/0087208 (2002-07-01), Koblish et al.
Flickinger William J.
Francischelli David E.
Mehra Rahul
Min Xiaoyi
Stewart Mark T.
Cohen Lee
Girma Wolde-Michael
Medtronic Inc.
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