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:
Dec. 25, 1990
Filed:
Nov. 17, 1988
Kazuhiro Okamoto, Kanagawa, JP;
Masaharu Mogi, Kanagawa, JP;
Naotaka Kagawa, Osaka, JP;
Yasuo Hino, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
An apparatus and method for sterilizing a root canal in which the apparatus contains an light source for generating bactericidal ultraviolet rays and an optical fiber coupled to the light source for transmitting the ultraviolet rays to and emitting the rays from an emitting end of the optical fiber placed in the root canal. Also included in a fiber protecting pipe that both protects the fiber and allows the fiber to be easily guided into the root canal. A flexible tube disposed over the emitting end of the root canal protects the exposed end of the optical fiber. Also, an arrangement of two optical fibers allows various shaped fiber protecting pipes to be used and a hand held coupling device couples two optical fibers.