# US 10,244,952 B2 · Measuring apparatus and measuring system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,244,952 B2 - Document ID: US10244952B2 - Status: Granted - Kind: B2 - Application number: 15/271,408 - Filed: 2016-09-21 - Published: 2017-03-30 - Granted: 2019-04-02 - Earliest claimed: 2015-09-28 - Assignees: KYOCERA Corporation - Applicants: KYOCERA Corporation - Inventors: Yuji Masuda - Web page: https://patentgrep.com/patent/US10244952B2 ## CPC - A61B 5/02427: {Details of sensor} - A61B 5/02125: {of pulse wave propagation time} - A61B 5/02438: {with portable devices, e.g. worn by the patient} - A61B 5/6824: {Arm or wrist} - A61B 5/6831: {Straps, bands or harnesses} - A61B 2562/043: in a linear array - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A measuring apparatus 100 includes a wearing portion 110 to be worn by a subject, and a sensor unit 120a and a sensor unit 120b each supported by the wearing portion 110 and having a light emitting unit and a light receiving unit, wherein the sensor unit 120a and the sensor unit 120b, in acquiring a biological-information of the subject when the wearing portion 110 is worn by the subject, are arranged having a distance of 35 mm or less from each other along a predetermined blood vessel of the subject. ## Claims ### Claim 1 A measuring apparatus comprising: a wearing portion to be worn by a subject; and a first sensor unit and a second sensor unit each supported by the wearing portion and each having two or more light emitting units and a light receiving unit, wherein the first sensor unit and the second sensor unit, in acquiring a biological-information of the subject when the wearing portion is worn by the subject, are arranged having a distance of 35 mm or less from each other along a predetermined blood vessel of the subject, and the light emitting units are arranged on both sides of the light receiving unit along a direction transverse to the predetermined blood vessel of the subject. ### Claim 2 (depends on 1) The measuring apparatus according to claim 1, wherein a light emitting element of the light emitting units of the first sensor unit and a light emitting element of the light emitting units of the second sensor unit are arranged having a distance of 35 mm or less from each other along the predetermined blood vessel of the subject. ### Claim 3 (depends on 1) The measuring apparatus according to claim 1, wherein a distance between the light emitting units of the first sensor unit and the light emitting units of the second sensor unit is shorter than a distance between the light receiving unit of the first sensor unit and the light receiving unit of the second sensor unit. ### Claim 4 (depends on 1) The measuring apparatus according to claim 1, wherein the light receiving unit includes an opening with a predetermined diameter. ### Claim 5 (depends on 1) The measuring apparatus according to claim 1, wherein the wearing portion is a belt to be worn by the subject on the wrist. ### Claim 6 (depends on 1) The measuring apparatus according to claim 1, wherein the biological-information is a pulse wave. ### Claim 7 (depends on 6) The measuring apparatus according to claim 6, comprising a controller for calculating a pulse wave velocity based on the pulse wave acquired. ### Claim 8 (depends on 1) A measuring system comprising: the measuring apparatus according to claim 1; and a display unit for displaying information based on the biological-information acquired by the measuring apparatus. ### Claim 9 A measuring apparatus comprising: a wearing portion to be worn by a subject; and a first sensor unit and a second sensor unit each supported by the wearing portion and having a first light emitting unit and a light receiving unit, wherein the first sensor unit and the second sensor unit, in acquiring a biological-information of the subject when the wearing portion is worn by the subject, are arranged having a predetermined distance from each other along a predetermined blood vessel of the subject, and at least one of an optical axis of light emitted from the first light emitting unit of the first sensor unit and an optical axis of light entering the light receiving unit of the first sensor unit is inclined to the second sensor unit. ### Claim 10 (depends on 9) The measuring apparatus according to claim 9, wherein at least one of an optical axis of light emitted from the first light emitting unit of the second sensor unit and an optical axis of light entering the light receiving unit of the second sensor unit is inclined to the first sensor unit. ### Claim 11 (depends on 9) The measuring apparatus according to claim 9, wherein the first light emitting unit includes a light emitting element, the light receiving unit includes a light receiving element, and at least one of the light emitting element and the light receiving element is arranged being inclined. ### Claim 12 (depends on 9) The measuring apparatus according to claim 9, wherein the first light emitting unit includes a light emitting element, the light receiving unit includes a light receiving element, and at least one of direction of light emitted from the light emitting element and direction of light entering the light receiving element is changed. ### Claim 13 (depends on 9) The measuring apparatus according to claim 9, wherein a distance between the first light emitting unit of the first sensor unit and the first light emitting unit of the second sensor unit is shorter than a distance between the light receiving unit of the first sensor unit and the light receiving unit of the second sensor unit. ### Claim 14 (depends on 9) The measuring apparatus according to claim 9, wherein each of the the first sensor unit and the second sensor unit further include a second light emitting unit, and in each of the first sensor unit and the second sensor unit, the first light emitting unit and the second light emitting unit are arranged on both sides of the light receiving unit along a direction transverse to the predetermined blood vessel of the subject. ### Claim 15 (depends on 9) The measuring apparatus according to claim 9, wherein the light receiving unit includes an opening with a predetermined diameter. ### Claim 16 (depends on 9) The measuring apparatus according to claim 9, wherein the wearing portion is a belt to be worn by the subject on the wrist. ### Claim 17 (depends on 9) The measuring apparatus according to claim 9, wherein the biological-information is a pulse wave. ### Claim 18 (depends on 17) The measuring apparatus according to claim 17, comprising a controller for calculating a pulse wave velocity based on the pulse wave acquired. ### Claim 19 (depends on 9) A measuring system comprising: the measuring apparatus according to claim 9; and a display unit for displaying information based on the biological-information acquired by the measuring apparatus.