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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 11406330 B1

PDFFull Text
Date of Patent:
Aug. 09, 2022

Filed:

Sep. 26, 2018

System to optically determine blood pressure

Applicant:

Amazon Technologies, Inc., Seattle, WA (US);

Inventor:

Leo Benedict Baldwin, Seattle, WA (US);

Assignee:

AMAZON TECHNOLOGIES, INC., Seattle, WA (US);

Attorney:

Lindauer Law, PLLC

Primary Examiner:

Yi-Shan Yang

Assistant Examiner:

Alexei Bykhovski

Int. Cl.
CPC ...
A61B 5/00 (2006.01); A61B 5/0205 (2006.01); A61B 5/103 (2006.01); A61B 5/107 (2006.01); G06T 7/13 (2017.01); H04N 5/235 (2006.01); A61B 5/0225 (2006.01); A61B 5/024 (2006.01); A61B 5/145 (2006.01); A61B 5/1455 (2006.01);
U.S. Cl.
CPC ...
A61B 5/7278 (2013.01); A61B 5/0077 (2013.01); A61B 5/02055 (2013.01); A61B 5/1032 (2013.01); A61B 5/1075 (2013.01); A61B 5/1079 (2013.01); A61B 5/489 (2013.01); A61B 5/681 (2013.01); G06T 7/13 (2017.01); H04N 5/2354 (2013.01); A61B 5/02255 (2013.01); A61B 5/02438 (2013.01); A61B 5/14532 (2013.01); A61B 5/14551 (2013.01); A61B 2560/0223 (2013.01); A61B 2560/0252 (2013.01); A61B 2562/0219 (2013.01); A61B 2576/02 (2013.01); G06T 2207/10048 (2013.01); G06T 2207/30101 (2013.01);
Abstract

A camera sensitive to near infrared light is placed proximate to the skin of a user and the area illuminated by one or more infrared light sources. A set of images of one or more blood vessels is obtained at successive times. The images are processed to determine a change in size of the vessel(s) from one time to another, corresponding to expansion and contraction of the vessels responsive to contraction of the user's heart. This change may be used to determine pulse rate, elasticity of the vessel, blood pressure, or other data about the user's physiological status. The data may be used to assess health status at a particular time, determine health trends for the user, and so forth.

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