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:
Jun. 27, 1989
Filed:
Jun. 25, 1986
Makoto Kikuchi, Mitaka, JP;
Shinsaku Mori, Tokyo, JP;
Yoshio Nikawa, Tokyo, JP;
Takashige Terakawa, Tokyo, JP;
Tokyo Keiki Co., Ltd., Tokyo, JP;
Abstract
The applicator of this invention functions as an antenna of electromagnetic waves when used in hyperthermia. The casing of this applicator serves as waveguide. The applicator incorporates in its casing an electromagnetic lens. It is also provided with a cooling mechanism for cooling the body surface of the heated region at an opening of the casing. When electromagnetic waves which have been introduced from outside to the supply portion propagate in the human body from the opening of the casing, energy reflection is generated due to untuned impedance. In order to prevent this reflection, the applicator of this invention incorporates three stub tuners which can be adjusted from outside so as to reduce the loss of energy. The casing of the applicator of this invention is filled with fluid such as machine oil which has a small damping factor so as to reduce the loss of electromagnetic waves in the casing which occurs during its propagation. The three stub tuners are waterproofed at their movable portion. Change in temperature is dealt with by providing a fluid accommodating means.