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:
Oct. 10, 2006
Filed:
Feb. 25, 2000
Nigel Cronin, Bath, GB;
Nigel Cronin, Bath, GB;
Microsulis Limited, Denmead, GB;
Abstract
Radiation applicators comprise an elongate device having an antenna () at their tip for coupling radiation into biological tissue and a dielectric body () surrounding the antenna so as to encompass substantially the whole of the near-field region of the antenna and/or to enhance transmission of radiation in the forward direction. The body () may be cylindrical with the antenna () along its axis. The antenna may be λ/2 in length and λ/2 in radius. The tip () of the antenna () may be rounded hemispherical with radius λ/2 to enhance forward transmission of radiation. The dielectric constant (ε) of the body () is as high as possible to reduce its diameter at a desired operating frequency but may be matched to the surrounding tissue by another layer of dielectric material () with a value (ε) intermediate that of the core () of the body () and the tissue.