System and method of titrating a phototherapy regime using real-time EEG readings

• US 8,556,951 B2
• Filed: 05/11/2010
• Issued: 10/15/2013
• Est. Priority Date: 06/03/2009
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Witt, Erik Kurt, Kirby, Mark Toddman
• Primary Examiner(s): Thomson, Bill
• Assistant Examiner(s): CRANDALL, LYNSEY P
• Application Number:
  US13/318,544
• Publication Number:
  US 20120053395A1
• Time in Patent Office: 1,253 Days
• Field of Search: None
• US Class Current: 607/88
• CPC Class Codes: A61B 5/375 using biofeedback
• CPC Class Codes: A61M 2021/0044 by the sight sense
• CPC Class Codes: A61M 21/00 Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
• CPC Class Codes: A61M 2230/005 Parameter used as control input for the apparatus
• CPC Class Codes: A61M 2230/10 Electroencephalographic signals
• CPC Class Codes: A61M 2230/14 Electro-oculogram [EOG]
• CPC Class Codes: A61N 2005/0648 the light being directed to the eyes
• CPC Class Codes: A61N 5/0618 Psychological treatment

Abstract

The provision of phototherapy to a subject is titrated to adapt dynamically to the sleep of the subject. The titration is performed using real-time or near real-time EEG readings. This may enhance the comfort and/or efficacy of the phototherapy.

Claims

1. A system configured to provide light therapy to a subject as the subject sleeps, the system comprising:

a sleep mask, the sleep mask comprising;

a shield configured to cover the eyes of a subject wearing the sleep mask such that the shield provides a barrier between ambient radiation and the eyes of the subject;

a headgear configured to hold the shield in place on the face of the subject;

one or more lighting modules carried by the shield, the one or more lighting modules being configured to provide radiation to the eyes of the subject; and

one or more EEG electrodes carried by the shield and/or the headgear; and

a processor in operative communication with the one or more lighting modules and the one or more EEG electrodes, the processor (i) controlling the one or more lighting modules to emit radiation incident on the eyes of the subject to provide phototherapy to the subject, (ii) receiving output signals generated by the one or more EEG electrodes, and (iii) adjusting one or more parameters of the phototherapy provided to the subject based on the received output signals

wherein, the processor is configured such that adjusting one or more parameters of the phototherapy provided to the subject based on the received output signals comprises controlling the one or more lighting modules to emit radiation onto the eyes of the subject at a first intensity if the received output signals indicate that the subject is experiencing REM sleep, and at a second intensity if the received output signals indicate that the subject is experiencing non-REM sleep, and wherein the first intensity is less than the second intensity.

2. The system of claim 1, wherein the one or more parameters of the phototherapy provided to the subject that the processor is configured to adjust based on the received output signals comprise one or more of an intensity of the radiation emitted by the one or more lighting modules, a start time of the phototherapy, an end time of the phototherapy, or a duration of the phototherapy.

3. The system of claim 1, wherein the processor is carried by the sleep mask.

4. A method of providing light therapy to a subject as the subject sleeps, the method comprising:

covering the eyes of a subject with a shield such that the shield provides a barrier between ambient radiation and the eyes of the subject;

holding the shield in place on the face of the subject with a headgear;

receiving output signals generated by one or more EEG electrodes carried by one or both of the shield and/or the headgear; and

controlling one or more lighting modules carried by the shield to emit radiation incident on the eyes of the subject to provide phototherapy to the subject,

wherein one or more parameters of the phototherapy provided to the subject are based on the received output signals and

wherein controlling one or more lighting modules carried by the shield to emit radiation incident on the eyes of the subject to provide phototherapy to the subject comprises controlling the one or more lighting modules to emit radiation onto the eyes of the subject at a first intensity if the received output signals indicate that the subject is experiencing REM sleep, and at a second intensity if the received output signals indicate that the subject is experiencing non-REM sleep, and wherein the first intensity is less than the second intensity.

5. The method of claim 4, wherein the one or more parameters of the phototherapy provided to the subject that are based on the received output signals comprise one or more of an intensity of the radiation emitted by the one or more lighting modules, a start time of the phototherapy, an end time of the phototherapy, or a duration of the phototherapy.

6. The method of claim 4, wherein the reception of the output signals and the controlling of the one or more lighting modules are performed by a processor that is carried by the shield and/or the headgear.

7. A system configured to provide light therapy to a subject as the subject sleeps, the system comprising:

means for covering the eyes of a subject that a barrier between ambient radiation and the eyes of the subject;

means for holding the means for covering the eyes in place on the face of the subject;

means for receiving output signals generated by one or more EEG electrodes carried by one or both of the means for covering the eyes and/or the means for holding; and

means for controlling one or more lighting modules carried by the means for covering the eyes to emit radiation incident on the eyes of the subject to provide phototherapy to the subject,

wherein one or more parameters of the phototherapy provided to the subject are based on the received output signals, and

wherein controlling the one or more lighting modules comprises controlling the one or more lighting modules to emit radiation onto the eyes of the subject at a first intensity if the received output signals indicate that the subject is experiencing REM sleep, and at a second intensity if the received output signals indicate that the subject is experiencing non-REM sleep, and wherein the first intensity is less than the second intensity.

8. The system of claim 7, wherein the one or more parameters of the phototherapy provided to the subject that are based on the received output signals comprise one or more of an intensity of the radiation emitted by the one or more lighting modules, a start time of the phototherapy, an end time of the phototherapy, or a duration of the phototherapy.

9. The system of claim 7, wherein the means for receiving output signals and the means for controlling one or more lighting modules are carried by the means for covering the eyes and/or the means for holding.