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:
Aug. 17, 2021
Filed:
Feb. 15, 2017
Applicant:
Health Sensing Co., Ltd., Hachioji, JP;
Inventors:
Assignee:
Health Sensing Co., Ltd., Hachioji, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 5/00 (2006.01); A61B 5/024 (2006.01); A61B 5/0245 (2006.01); A61B 5/08 (2006.01); A61B 5/16 (2006.01); A61B 5/11 (2006.01); A61B 5/318 (2021.01);
U.S. Cl.
CPC ...
A61B 5/4812 (2013.01); A61B 5/0245 (2013.01); A61B 5/02405 (2013.01); A61B 5/08 (2013.01); A61B 5/16 (2013.01);
Abstract
[Problem] To provide means by which sleep states can be measured, observed, or evaluated easily. [Solution] A sleep state measurement device that includes a phase coherence calculating means for calculating phase coherence on the basis of the instantaneous phase difference between the instantaneous phase of heart rate variability acquired from a sleeping animal and the instantaneous phase of the breathing pattern of the animal for the same time series as the heart rate variability.