Device and method for obtaining and processing measurement readings including at least a component representative of a physical phenomenon in a living being

Patent metadata

Field	Value
Publication number	US-10687706-B2
Application number	US-201214234454-A
Country	US
Kind code	B2
Filing date	Jul 17, 2012
Priority date	Aug 1, 2011
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

The present invention relates to a device ( 10 ) for obtaining and processing measurement readings including at least a component representative of a physical phenomenon in a living being ( 16 ), comprising a sensor ( 12 ) for obtaining measurement readings from at least one body part of a living being ( 16 ) from a distance having at least a component representative of the physical phenomenon in the living being ( 16 ), an identification unit ( 26 ) for identifying the at least one body part of the living being ( 16 ); an extraction unit ( 38 ) for extracting at least one first signal from the measurement readings representing at least one component representative of the physical phenomenon, an evaluation unit ( 30 ) for obtaining adjustment information according to the at least one identified body part, and an adjustment unit ( 34 ) for adjusting the at least one first signal according to the adjustment information and for generating at least one output signal representing the physical phenomenon of the living being ( 16 ).

First claim

The invention claimed is:

1. A device for obtaining and processing measurement readings including at least a component representative of a physical phenomenon in a living being, comprising:
a sensor configured to obtain measurement readings from at least one body part of a living being from a distance having at least a component representative of the physical phenomenon in the living being;
at least one processor programmed to:
identify the at least one body part of the living being from the obtained measurement readings;
extract at least one first signal from the measurement readings representing at least one component representative of the physical phenomenon;
obtain at least one calibration curve corresponding to the at least one identified body part, the at least one calibration curve including calibration values corresponding to first signal values of the at least one first signal;
adjust the at least one first signal by adjusting the first signal values of the at least one first signal to correspond with the corresponding calibration values of the at least one calibration curve; and
generate at least one output signal representing the physical phenomenon of the living being by processing the calibration curve and the adjusted at least one first signal with the adjusted first signal values.

2. The device according to claim 1 , wherein the physical phenomenon is blood oxygenation, pulse, heart rate variability, blood pressure, respiratory rate, depth of anesthesia and/or hypo- and hypervolemia.

3. The device according to claim 1 , wherein the sensor is a video camera.

4. The device according to claim 1 , wherein the at least one processor is further programmed to:
extract the at least one first signal from the measurement readings based on the at least one identified body part.

5. The device according to claim 4 , wherein at least one processor is further programmed to:
estimate motions of the at least one identified body part; and
extract the at least one first signal in accordance with the estimated motions.

6. The device according to claim 4 , wherein the at least one processor is further programmed to:
compare at least two first signals representing component representatives of the physical phenomenon from different body parts of the living being.

7. The device according to claim 6 , wherein the at least one processor is further programmed to:
determine a difference between the at least two first signals and for generating a reporting signal if the difference exceeds a threshold.

8. The device according to claim 4 , wherein the at least one processor is further programmed to:
generate the output signal based on at least two first signals.

9. The device according to claim 8 , wherein the at least one processor is further programmed to:
determine a quality of the at least two first signals; and
select at least one first signal based on the quality.

10. The device according to claim 8 , wherein the at least one processor is further programmed to:
merge the at least two first signals for generating the output signal.

11. A processor for processing measurement readings including at least a component representative of a physical phenomenon in a living being, comprising:
an interface for receiving measurement readings from at least one body part of a living being obtained from a distance and having at least a component representative of the physical phenomenon in the living being;
wherein the processor is programmed to:
identify the at least one body part of the living being;
extract at least one first signal from the measurement readings representing at least one component representative of the physical phenomenon;
obtain a calibration curve corresponding to the at least one identified body part; and
adjust the at least one first signal by adjusting first signal values of the at least one first signal to corresponding calibration values of the calibration curve; and
process the calibration curve and the adjusted at least one first signal with the adjusted first signal value to generate at least one output signal representing the physical phenomenon of the living being.

12. A method for processing measurement readings including at least a component representative of a physical phenomenon in a living being, comprising:
with an interface, receiving measurement readings from at least one body part of a living being, the measurement reading including at least a component representative of the physical phenomenon in the living being;
with at least one processor, identifying the at least one body part;
with the at least one processor, extracting at least one first signal from the measurement readings representing at least one component representative of the physical phenomenon;
with the at least one processor, obtaining a calibration curve according to the at least one identified body part;
with the at least one processor, adjusting the at least one first signal by adjusting first signal values of the at least one first signal to corresponding calibration values of the calibration curve;
with the at least one processor, generating at least one output signal representing the physical phenomenon; and
with the at least one processor, controlling a display device to display the output signal representing the physical phenomenon.

13. A non-transitory computer-readable medium comprising program code means for causing a computer to carry out the steps of the method as claimed in claim 12 when said computer program is carried out on the computer.

14. A device for obtaining and processing measurement readings including at least a component representative of a physical phenomenon in a living being, the device comprising:
a camera configured to obtain images of at least one body part of a living being from a distance, the images including measurement readings of the at least one body part having at least a component representative of the physical phenomenon in the living being;
at least one processor programmed to:
identify the at least one body part from the images;
extract at least one first signal from the measurement readings representing the physical phenomenon;
retrieve, from a data storage, at least one predetermined calibration curve based on the at least one identified body part; and
adjust the at least one first signal by adjusting first signal values of the at least one first signal to corresponding calibration values of the at least one calibration curve; and
process the calibration curve and the adjusted at least one first signal with the adjusted first signal value to generate at least one output signal representing the physical phenomenon; and

a display component configured to display the at least one output signal.

15. The device according to claim 14 , wherein the physical phenomenon includes motion and the at least one processor is further programmed to:
estimate motions of the at least one identified body part; and
extract the at least one first signal based on the estimated motions.

16. The device according to claim 14 , wherein the at least one processor is further programmed to:
determine a difference between at least two first signals representing component representatives of the physical phenomenon; and
generating a reporting signal reporting the physical phenomenon in response to an occurrence of the physical phenomenon.

17. The device according to claim 14 , wherein the at least one processor is further programmed to generate the output signal based on at least two first signals.

Assignees

• Jeanne Vincent
• Bodlaender Maarten Peter
• Verkruijsse Willem
• Koninklijke Philips Nv

Inventors

• Jeanne Vincent
• Bodlaender Maarten Peter
• Verkruijsse Willem

Classifications

• A61B5/0077 Primary

  Devices for viewing the surface of the body, e.g. camera, magnifying lens · CPC title

• A61B5/4821

  Determining level or depth of anaesthesia (based on movements A61B5/1106) · CPC title

• A61B5/02405

  Determining heart rate variability · CPC title

• A61B5/024

  Measuring pulse rate or heart rate · CPC title

• A61B2560/0223

  of calibration, e.g. protocols for calibrating sensors · CPC title