The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 2000
Filed:
Apr. 19, 1999
Lily Chen Tu, Tustin, CA (US);
Hosheng Tu, Tustin, CA (US);
Other;
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.