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:
Nov. 21, 2000
Filed:
Mar. 03, 1999
Katsumi Hayashi, Kanagawa-ken, JP;
Fuji Photo Film Co., Ltd., Kanagawa-Ken, JP;
Abstract
A blood-constituent concentration measuring instrument capable of accurately measuring concentrations of the constituent parts of blood without invading tissue. Light source means (1) emits measuring light (S) to a living organism (2). The measuring light (S) consists of a plurality of wavelength components different from one another. Straight-advance light discrimination means (3) extracts a straight-advance light component or a scattered light component close thereto from light scattered at the living organism (2). Then, extinction-index change detection means (4) detects an extinction index change in straight-advance light component or the scattered light component extracted by the straight-advance light discrimination means (4). Calculation means (5) calculates concentrations of the constituent parts of the blood, based on the extinction index change for each wavelength component of the measuring light.