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.

Date of Patent:
Nov. 04, 2025

Filed:

Jun. 24, 2020
Applicant:

Nihon Kohden Corporation, Tokyo, JP;

Inventors:

Kota Saeki, Tokorozawa, JP;

Naoki Kobayashi, Tokorozawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61B 5/145 (2006.01);
U.S. Cl.
CPC ...
A61B 5/14552 (2013.01); A61B 5/14546 (2013.01); A61B 5/6826 (2013.01); A61B 5/6843 (2013.01); A61B 5/7242 (2013.01); A61B 5/7246 (2013.01); A61B 5/7267 (2013.01); A61B 5/74 (2013.01);
Abstract

An input interface is configured to receive a signal corresponding to a quantity of light that has passed through a living tissue of a subject. A pressurization controller is configured to control a pressurizing operation performed with a pressurization device attached to a body of the subject, thereby changing at least one of a thickness of the living tissue, an amount of blood contained in the living tissue, an amount of cellular interstitial fluid contained in the living tissue, an amount of blood flowing into the living tissue, and an amount of blood flowing out from the living tissue. A processor is configured to acquire, from a temporal change of the signal due to the pressurizing operation, a feature quantity that is used for estimating at least one of a physiological state of the living tissue and a disease state of the subject.


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