# US 2014/0155759 A1 · Device and method for obtaining vital sign information of a living being > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155759 A1 - Document ID: US20140155759A1 - Status: Published application - Kind: A1 - Application number: 14/093,566 - Filed: 2013-12-02 - Published: 2014-06-05 - Earliest claimed: 2012-12-04 - Assignees: Koninklijke Philips N.V. - Inventors: Siegfried Walter KAESTLE; Caifeng SHAN - Web page: https://patentgrep.com/patent/US20140155759A1 ## CPC - A61B 5/02427: {Details of sensor} - A61B 5/0077: {Devices for viewing the surface of the body, e.g. camera, magnifying lens} - A61B 5/02416: {using photoplethysmograph signals, e.g. generated by infrared radiation (A61B5/14552 takes precedence)} - A61B 5/1128: {using image analysis (A61B5/1127 takes precedence)} - A61B 5/14551: {for measuring blood gases} - A61B 5/7278: {Artificial waveform generation or derivation, e.g. synthesizing signals from measured signals} - A61F 7/007: {characterised by electric heating} - A61G 11/00: Baby-incubators; Couveuses - A61B 2503/045: Newborns, e.g. premature baby monitoring - A61B 2505/03: Intensive care - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00) ## Abstract A device for obtaining vital sign information of a living being comprises a detection unit that receives light in at least one wavelength interval reflected from at least a region of interest of a living being and that generates an input signal from the received light. A processing unit processes the input signal and derives vital sign information of said living being from said input signal by use of remote photoplethysmography. An illumination unit illuminates at least said region of interest with light, and a control unit controls said illumination unit based on said input signal and/or said derived vital sign information. ## Claims ### Claim 1 A device for obtaining a sign information of a living being, comprising: a detection unit that receives light in at least one wavelength interval reflected from at least a region of interest of a living being and that generates an input signal from the received light, a processing unit that processes the input signal and derives vital sign information of said living being from said input signal by use of remote photoplethysmography, an illumination unit that illuminates at least said region of interest with light, and a control unit that controls said illumination unit based on said input signal and/or said derived vital sign information. ### Claim 2 (depends on 1) The device as claimed in claim 1, wherein said control unit is configured to intensity, wavelength, direction and/or illumination angle of the light emitted by said illumination unit. ### Claim 3 (depends on 1) The device as claimed in claim 1, wherein said illumination unit comprises two or more illumination elements. ### Claim 4 (depends on 3) The device as claimed in claim 3, wherein said two or more illumination elements are arranged at different locations and/or with different orientations. ### Claim 5 (depends on 3) The device as claimed in claim 3, wherein said two or more illumination elements have different parameters, in particular different wavelengths, intensities and/or illumination angles. ### Claim 6 (depends on 4, 5) The device as claimed in claim 4 or 5, wherein said control unit configured to individually control said illumination elements. ### Claim 7 (depends on 1) The device as claimed in claim 1, wherein said control unit is configured to control said illumination unit based on one or more predetermined parameters. ### Claim 8 The device as claimed in clams 7, wherein said control unit is configured to determine the amount of specular reflection in the region of interest, and to control said illumination unit based on the determined amount of specular reflection so as to reduce or minimize the amount of specular reflection. ### Claim 9 (depends on 7) The device as claimed in claims 7, wherein said control unit is configured to control said illumination unit based on one or more parameters of a monitored area and/or the derived vital sign information, in particular light intensity of the monitored area, heart rate, oxygen saturation, pulsatility amplitude, pulse shape and/or periodicity of the vital sign information. ### Claim 10 (depends on 1) The device as claimed in claim 1, wherein said detection unit comprises two or more detection elements. ### Claim 11 (depends on 10) The device as claimed in claim 10, wherein said processing unit is configured to select the input signals generated from light received by the detection element from which vital sign information with the best quality are used for deriving the vital sign information. ### Claim 12 (depends on 10) The device as claimed in claim 10, wherein said processing unit is configured to select the input signals generated from light received by the detection element which received light from the region of interest with the best illumination. ### Claim 13 (depends on 1) The device as claimed in claim 1, wherein said detection unit is configured to detect changes of a monitored area, the environment and/or the living being and wherein said control unit is configured, if changes of the monitored area, the environment and/or the living being are detected, to check actual control settings of said illumination unit and to again control said illumination unit based on said input signal and/or said derived vital sign information. ### Claim 14 (depends on 7) The device as claimed in claim 7, wherein said control unit is configured to control said illumination unit to sequentially illuminate said region of interest with different settings of intensity, wavelength, direction and/or illumination angle of light and to select the settings resulting in input signals with the best image quality and/or vital signs with the best quality. ### Claim 15 A method for obtaining vital sign information of a living being, comprising: illuminating at least a region of interest of a living being with light, receiving light in at least one wavelength interval reflected from at least said region of interest, generating an input signal from the received light, processing the input signal and deriving vital sign information of said living being from said input signal by use of remote photoplethysmography, and controlling said illumination unit based on said input signal and/or said derived vital sign information. ### Claim 16 A care device, comprising: a child carrier that carries a newborn, a detector that receives light in at least one wavelength interval reflected from at least a region of interest of the and that generates an input signal from the received light, a processor that processes the input signal and derives vital sign information of said living being from said input signal by use of remote photoplethysmography, an illuminator that illuminates at least said region of interest with light, and a controller that controls said illumination unit based on said input signal and/or said derived vital sign information. ### Claim 17 (depends on 16) The care device as claimed in claim 16, wherein said care device is an incubator further comprising a canopy for housing the child and wherein said detector and said illuminator are arranged at said canopy. ### Claim 18 (depends on 16) Theca e as claimed in claim 16, wherein said care device is a radiant warmer further comprising a radiator that emits radiation for warming the child and wherein said detector, said illuminator and said radiator are arranged at or within a carrier of said radiant warmer. ### Claim 19 (depends on 16) The care device as claimed in claim 16, wherein said care device is a neonatal care device for caring and obtaining vital sign information of a newborn.