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:
May. 22, 1990
Filed:
May. 19, 1989
Masahiko Kanda, Osaka, JP;
Yuichi Miyagawa, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A light-reflecting and heating type oximeter designed to measure non-invasively oxygen saturation in blood contained in a part of a living body by using an optical sensor. The optical sensor has a light-emitting section for emitting measuring light beams having at least two different wavelengths and a light-receiving section for receiving the measuring light beams activated by and reflected from the measuring part of the living body, and a heating means whose heating temperature is controllable is provided around the light-emitting and -receiving sections. The light receiving section and light emitting section are arranged in a particular positional relationship on a flat surface of the optical sensor housing to obtain accurate measurements. The arrangement enables measurement of oxygen saturation in any part of a living body including those in which blood vessels are distributed close to the body surface, such as finger tips, ears and the flat part of a newborn's foot.