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Device, system and method for determining vital signs of a subject

A technology of vital signs and objects, applied in application, medical science, diagnosis, etc., can solve problems such as low signal-to-noise ratio

Inactive Publication Date: 2016-11-23
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, long-range PPG devices typically achieve lower signal-to-noise ratios

Method used

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  • Device, system and method for determining vital signs of a subject
  • Device, system and method for determining vital signs of a subject
  • Device, system and method for determining vital signs of a subject

Examples

Experimental program
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Embodiment Construction

[0042] figure 1 A schematic diagram of an embodiment of a system 10 comprising a device 12 for obtaining vital signs of a subject 114 according to the invention is shown. The subject 14, in this example a patient, is on a bed 16, for example in a hospital or other healthcare facility, but could also be a newborn or premature baby, for example, in an incubator, or a person at home or in a different environment . Image frames of the subject 14 are captured by means of a camera 18 (also called a detection unit or camera-based or remote PPG sensor) comprising a suitable light sensor. The camera 18 forwards the recorded image frames to the processing means of the device 12, where the image frames are to be processed, as explained in more detail below. Device 12 preferably includes an interface 20 for displaying certain information and / or for providing an interface to medical personnel to change settings of device 12 and / or other elements of system 10 . Such interface 20 may incl...

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PUM

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Abstract

The present invention relates to a device, system and method for determining vital signs of a subject. To balance accuracy and reliability with unobtrusiveness, the device comprises an interface (30) for receiving input signals from a detection unit (18) that is configured for contactless detection of radiation reflected from a subject (14) in response to illumination by an illumination source (22), a processing unit (32) for deriving photoplethysmography, PPG, signals from the received input signals, an analysis unit (34) for deriving a desired vital sign from the PPG signals, and a control unit (36) for controlling one or more parameters of the illumination source (22), the detection unit (18) and / or the analysis unit (34) in dependence on the physical state of the subject, the quality of the input signals or the derived vital sign and / or the value of the vital sign.

Description

technical field [0001] The present invention relates to apparatus, systems and methods for determining vital signs of a subject, such as a human or animal. Background technique [0002] A person's vital signs, such as heart rate (HR), respiration rate (RR), or blood oxygen saturation, are used as indicators of the person's current state and as a strong predictor of serious medical events. For this reason, vital signs are widely monitored in inpatient and outpatient care settings, at home or in further health, leisure and fitness settings. [0003] One way to measure vital signs is plethysmography. Plethysmography generally involves the measurement of volumetric changes in an organ or body part, and in particular the detection of volumetric changes due to cardiovascular pulse waves that pass through a subject's body with each heartbeat. [0004] Photoplethysmography (PPG) is an optical measurement technique that evaluates time-varying changes in light reflectivity or transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0295A61B5/0205A61B5/1455
CPCA61B5/0205A61B5/02055A61B5/02416A61B5/0261A61B5/0295A61B5/14532A61B5/1455A61B5/14551A61B5/7207A61B5/7221A61B5/4809A61B5/01A61B5/021A61B5/02405A61B5/0816A61B5/7278
Inventor W·韦尔克鲁杰塞A·杜比尔钦克R·诺依曼
Owner KONINKLJIJKE PHILIPS NV