Apparatus and methods for tissue treatment

Details Apparatus and methods for tissue treatment Apparatus and methods for tissue treatment

1999-04-19

2000-11-21

Dvorak, Linda C. M.

Surgery

Instruments

Electrical application

606 37, 606 45, 607102, A61B 1818

Patent

active

061496472

ABSTRACT:
An ablation apparatus for treating tissues of a patient, the ablation apparatus including a catheter shaft, the catheter shaft including a shaft distal section, a shaft distal end, a shaft proximal end, and at least one lumen extending between the shaft proximal end and the shaft distal end; a handle attached to the shaft proximal end, wherein the handle has a cavity; electrode means mounted at the shaft distal section for emitting energy to ablate tissue, wherein the electrode means includes a plurality of surface sections, each surface section having different surface current resistance for transmitting different electrical current density through said surface section; and RF current generating means for generating RF current for delivering to the electrode means through at least one electrical conductor, wherein the at least one electrical conductor is coupled to the electrode means.

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Eric R. Cosman et al. "Chapter 2 : Physical Aspects of Radiofrequency Energy Applications" in Huang SKS (ed.) Radiofrequency Ablation of Cardiac Arrhythmias : Basic Concepts and Clinical Applications, Armonk, NY : Futura Publishing Company Inc. 1994.

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