Device, system and method for determining at least one vital sign of a subject

A technology of vital signs and objects, applied in application, medical science, diagnosis, etc., can solve problems such as unreliable results and SNR calibration errors

Pending Publication Date: 2020-06-16
KONINKLJIJKE PHILIPS NV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, unexpected blood substances, especially blood gases like CO or MetHB, may cause poor SNR or incorrect calibration of the method used to measure or evaluate the measurement, resulting in unreliable results

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device, system and method for determining at least one vital sign of a subject
  • Device, system and method for determining at least one vital sign of a subject
  • Device, system and method for determining at least one vital sign of a subject

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Recently, significant improvements in the motion robustness of long-range PPG monitoring techniques have been achieved. The fundamental insight to be able to separate motion-induced signal changes from actual PPG changes is that motion affects all wavelength channels equally (a typical PPG surveillance system uses at least two wavelength channels), i.e., the relative signal strength of motion-induced changes in all channels The same, whereas the PPG-based changes are clearly wavelength-dependent. The wavelength dependence of the PPG signal is mainly due to the wavelength-dependent variation of the absorption contrast between blood and skin. Also, to a lesser extent, it depends on the depth of penetration of light as a function of wavelength and the scattering properties of light in human skin.

[0043] The characteristic wavelength dependence of the PPG signal can be used as a signature, enabling robust PPG measurements. The number of independent distortions that can ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention relates to a device, system and method for determining at least one vital sign of a subject. The device (130) comprises an input interface (131) configured to obtain at least three detection signals (210) derived from detected electromagnetic radiation transmitted through or reflected from a skin region of a subject, wherein each detection signal comprises wavelength-dependent reflection or transmission information in a different wavelength channel, a vital sign extraction unit (132) configured to extract multiple candidate vital signs (232) of the same type of vital signfrom said at least three detection signals, wherein each candidate vital sign is extracted from a different detection signal or a different combination of at least two detection signals, a vital signdetermination unit (133) configured to determine a final vital sign (233) from said multiple candidate vital signs, and a reliability information unit (134) configured to provide reliability information (234a) indicating the reliability of said final vital sign and / or one or more of said candidate vital signs and to provide unreliability source information (234b) indicating the source of unreliability of said final vital sign and / or one or more of said candidate vital signs.

Description

technical field [0001] The present invention relates to a device, system and method for determining at least one vital sign of a subject. Background technique [0002] A person's vital signs, such as heart rate (HR), respiration rate (RR) or arterial oxygen saturation (Sp02), are used as indicators of the person's current state and as favorable predictors of serious medical events. For this reason, vital signs are widely monitored in inpatient and outpatient care settings, at home or further in health, leisure and fitness settings. [0003] One way of measuring vital signs is plethysmography. Plethysmography generally involves the measurement of volume changes of an organ or body part, and in particular the detection of volume changes due to cardiovascular pulse waves passing through a subject's body with each heartbeat. [0004] Photoplethysmography (PPG) is an optical measurement technique that evaluates time-varying changes in light reflectance or transmission of a regi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B5/024A61B5/1455
CPCA61B5/7207A61B5/7221A61B5/02416A61B5/14552A61B5/7278A61B5/746A61B2562/0238
Inventor G·德哈恩
Owner KONINKLJIJKE PHILIPS NV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap