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:
Jan. 13, 2015
Filed:
Apr. 15, 2009
Theodore C. Ormsby, Escondido, CA (US);
Russell Chung, San Diego, CA (US);
George Leung, San Diego, CA (US);
Gwo Jenn Shen, Carlsbad, CA (US);
Theodore C. Ormsby, Escondido, CA (US);
Russell Chung, San Diego, CA (US);
George Leung, San Diego, CA (US);
Gwo Jenn Shen, Carlsbad, CA (US);
MedWaves, Inc., San Diego, CA (US);
Abstract
An ablation device which transmits radio frequency (RF) energy for the ablation of biological tissues has elongate inner and outer coaxial conductors extending from a proximal portion to a distal portion. An RF antenna is disposed at the distal portion of the device and transmits RF energy for ablation of a tissue region to be treated. Reflection of energy from the tissue or the ablation point is reduced by providing multiple layers of dielectric media about the antenna, or by providing a gradual transition point from the conductors to the antenna tip, by means of a longitudinally stepped dielectric layer transformer.