Contactless sleep disorder screening system

Patent metadata

Field	Value
Publication number	US-10136853-B2
Application number	US-201214008016-A
Country	US
Kind code	B2
Filing date	Mar 28, 2012
Priority date	Mar 30, 2011
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

Provided are systems (100) and methods (200) for providing contact-less sleep disorder diagnosis, including a sound input device (103) and/or a movement detector (105) that receive sound and/or movement data originating from a patient in a sleeping environment, respectively. Also included is a computer-implemented device (109) that receives and stores the sound and/or movement data and determines a sleep disorder diagnosis based on the received data.

First claim

The invention claimed is:

1. A system configured to monitor a sleep session of a patient without making physical contact with the patient, the system comprising:
a sound sensor configured to generate output signals that convey information related to sound originating from the patient in a sleeping environment;
a movement sensor comprising:
a light source configured to project a structured light pattern onto the patient which deforms when the patient moves; and
a detector configured to receive light reflected from the patient, the detector configured to generate output signals that convey information related to changes in the structured light pattern projected onto the patient caused by movement of the patient; and

one or more hardware processors configured by machine-readable instructions to:
receive and store data relating to the sound originating from the patient based on the information conveyed by the output signals from the sound sensor,
determine movement of the patient based on (1) a distance between the light source and the detector, and (2) a change in angle of reflected light from the structured light pattern received from an individual moving point on the patient, wherein images derived from the information related to changes in the structured light pattern are construed wherein an indication of motion vectors is provided, wherein the motion vectors indicate a direction and an amplitude of the movement of the patient, wherein the motion vectors facilitate segmentation of one or more body parts, and wherein information related to a mouth movement is determined based on the segmentation of the one or more body parts, and
determine a sleep disorder diagnosis based on the sound originating from the patient and the movement of the patient, wherein the one or more hardware processors are configured to determine parasomnia Bruxism based on the determined mouth movement.

2. The system claim 1 , wherein the detector comprises one or more of a visible light detecting camera or an infrared light detecting camera.

3. The system of claim 1 , wherein neither the sound sensor nor the movement sensor is in contact with the patient when sound is received or movement is monitored.

4. The system of claim 1 , wherein at least one of the sound sensor or the movement sensor is integrated into a housing with the one or more hardware processors.

5. The system of claim 1 , wherein the determination of the sleep disorder diagnosis includes a probability indicator for the diagnosis.

6. The system of claim 1 , wherein the motion vectors facilitate one or more of a determination of an orientation of the patient, a segmentation of the patient from a bed partner, and an analysis of a local motion.

7. A system configured to monitor a sleep session of a patient without making physical contact with the patient, the system comprising:
a sound sensor configured to generate output signals that convey information related to sound originating from the patient in a sleeping environment;
a movement sensor comprising:
a light source configured to project a structured light pattern onto the patient which deforms when the patient moves; and
a detector configured to receive light reflected from the patient, the detector configured to generate output signals that convey information related to changes in the structured light pattern projected onto the patient caused by movement of the patient; and

one or more hardware processors configured by machine-readable instructions to:
receive and store data relating to the sound originating from the patient based on the information conveyed by the output signals from the sound sensor,
determine movement of the patient based on (1) a distance between the light source and the detector, and (2) a change in angle of reflected light from the structured light pattern received from an individual moving point on the patient, wherein images derived from the information related to changes in the structured light pattern are construed wherein an indication of motion vectors is provided, wherein the motion vectors indicate a direction and an amplitude of the movement of the patient, wherein the motion vectors facilitate segmentation of one or more body parts, and wherein information related to a limb movement is determined based on the segmentation of the one or more body parts, and
determine a sleep disorder diagnosis based on the sound originating from the patient and the movement of the patient,

wherein the one or more hardware processors are configured to determine (i) a frequency and severity of the limb movement and (ii) a periodic limb movements index corresponding to a number of periodic limb movements per hour of sleep and/or a periodic limb movements arousal index corresponding to a number of arousal-associated periodic limb movements per hour of sleep based on (i) the limb movement and (ii) a sound accompanying the limb movement.

8. The system claim 7 , wherein the detector comprises one or more of a visible light detecting camera or an infrared light detecting camera.

9. The system of claim 7 , wherein neither the sound sensor nor the movement sensor is in contact with the patient when sound is received or movement is monitored.

10. The system of claim 7 , wherein at least one of the sound sensor or the movement sensor is integrated into a housing with the one or more hardware processors.

11. The system of claim 7 , wherein the determination of the sleep disorder diagnosis includes a probability indicator for the diagnosis.

12. The system of claim 7 , wherein the motion vectors facilitate one or more of a determination of an orientation of the patient, a segmentation of the patient from a bed partner, and an analysis of a local motion.

13. A method for monitoring a sleep session of a patient without making physical contact with the patient, the method comprising:
generating, with a sound sensor, output signals that convey information related to sound originating from the patient in a sleeping environment;
projecting, with a light source, a structured light pattern onto the patient which deforms when the patient moves;
receiving, with a detector, light reflected from the patient;
generating, with the detector, output signals that convey information related to changes in the structured light pattern projected onto the patient caused by movement of the patient;
determining, with one or more hardware processors, movement of the patient based on (1) a distance between the light source and the detector, and (2) a change in angle of reflected light from the structured light pattern received from an individual moving point on the patient, wherein images derived from the information related to changes in the structured light pattern are construed wherein an indication of motion vectors is provided, wherein the motion vectors indicate a direction and an amplitude of the movement of the patient, wherein the motion vectors facilitate segmentation of one or more body parts, and wherein information related to a mouth movement is determined based on the segmentation of the one or more body parts;
determining, with the one or more hardware processors, a sleep disorder diagnosis based on the sound originating from the patient and the movement of the patient in the sleeping environment, and
determining, with the one or more hardware processors, parasomnia Bruxism based on the determined mouth movement.

14. The method claim 13 , wherein the detector is one or more of a visible light detecting camera or an infrared light detecting camera.

15. The method of claim 13 , wherein neither the sound sensor nor the

Assignees

• Heinrich Adrienne
• Raymann Roy Joan Eli Marie
• Van Vugt Henriette Christine
• Koninklijke Philips Nv

Inventors

• Heinrich Adrienne
• Raymann Roy Joan Eli Marie
• Van Vugt Henriette Christine

Classifications

• A61B5/0059

  using light, e.g. diagnosis by transillumination, diascopy, fluorescence (photoacoustic A61B5/0093; optical measurement of heart rate A61B5/02416; optical measurement of blood flow A61B5/0261; optical measurement of analytes A61B5/1455) · CPC title

• A61B5/1116

  Determining posture transitions · CPC title

• A61B5/4812

  Detecting sleep stages or cycles · CPC title

• A61B7/003

  Detecting lung or respiration noise · CPC title

• A61B8/00

  Diagnosis using ultrasonic, sonic or infrasonic waves · CPC title