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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.:

US 12495979 B1

PDFFull Text
Date of Patent:
Dec. 16, 2025

Filed:

Feb. 19, 2019

Blood pressure estimating device

Applicant:

Murata Manufacturing Co., Ltd., Nagaokakyo, JP;

Inventor:

Toru Shimuta, Nagaokakyo, JP;

Assignee:

MURATA MANUFACTURING CO., LTD., Kyoto, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Jacqueline Cheng

Assistant Examiner:

Jairo H Portillo

Int. Cl.
CPC ...
A61B 5/0225 (2006.01); A61B 5/00 (2006.01); A61B 5/02 (2006.01); A61B 5/021 (2006.01); A61B 5/022 (2006.01); A61B 5/107 (2006.01); A61B 5/349 (2021.01); A61B 5/024 (2006.01); A61B 5/0245 (2006.01); A61B 5/0285 (2006.01); A61B 5/25 (2021.01);
U.S. Cl.
CPC ...
A61B 5/02255 (2013.01); A61B 5/02 (2013.01); A61B 5/02125 (2013.01); A61B 5/022 (2013.01); A61B 5/107 (2013.01); A61B 5/349 (2021.01); A61B 5/6822 (2013.01); A61B 5/721 (2013.01); A61B 5/7239 (2013.01); A61B 5/725 (2013.01); A61B 5/02416 (2013.01); A61B 5/0245 (2013.01); A61B 5/0285 (2013.01); A61B 5/25 (2021.01);
Abstract

A signal processor of a blood pressure estimating device includes a pulse wave transit time acquirer that acquires a pulse wave transit time based on a pulse wave signal detected by a photoplethysmographic sensor and an electrocardiographic signal, a time measurer that measures a time elapsed from when acquisition of the pulse wave transit time is started, and a blood pressure estimator that estimates a blood pressure based on a predetermined relationship between the pulse wave transit time and the blood pressure. The photoplethysmographic sensor is in contact with a neck of a user at a position not directly over a carotid artery when the pulse wave transit time is acquired, and the blood pressure estimator estimates the blood pressure after the measured elapsed time has become a predetermined time or more.

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