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. 26, 2012
Filed:
Dec. 01, 2005
Atsuo Miyakawa, Shizuoka, JP;
Matsuyuki Doi, Shizuoka, JP;
Seiji Yamamoto, Shizuoka, JP;
Susumu Terakawa, Shizuoka, JP;
Atsuo Miyakawa, Shizuoka, JP;
Matsuyuki Doi, Shizuoka, JP;
Seiji Yamamoto, Shizuoka, JP;
Susumu Terakawa, Shizuoka, JP;
Abstract
An evanescent catheter system having a tip portion of an optical fiber capable of securely measuring fluorescence intensity or fluorescence spectrum of a substance around a catheter tip, without being hindered by optical absorption of hemoglobin in erythrocytes in blood, and being capable of calculating an existing amount of a fluorescence-emitting substance existing in an evanescent light generating part. A protecting layerand a claddingare removed from an upper semicircular part of a coreat a tip of a catheterto expose the core. When excitation lightis incident, evanescent lightis generated on the upper semicircular part of the coreand a fluorescent substance generates emits fluorescence. An interference filterfilters out the excitation light and only the fluorescencereaches the photodiode, permitting a measuring device to measure an existing amount of the fluorescent substance.