External device that continuously monitors for OSDB and delivers audio stimulation therapy

• US 8,406,884 B2
• Filed: 02/06/2007
• Issued: 03/26/2013
• Est. Priority Date: 02/28/2006
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Nielsen, Larry
• Primary Examiner(s): Layno, Carl H
• Assistant Examiner(s): Stice, Paula J
• Application Number:
  US12/279,998
• Publication Number:
  US 20100228315A1
• Time in Patent Office: 2,240 Days
• Field of Search: 607 1- 3, 607/42, 607 26- 28, 607/55, 128/633
• US Class Current: 607/42
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/022 by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/14542 for measuring blood gases A61B5/14551 takes precedence
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61B 5/6815 Ear
• CPC Class Codes: A61B 5/6817 Ear canal
• CPC Class Codes: A61B 5/6838 Clamps or clips

Abstract

A physiological parameter measuring device (14) is disposed within or near an ear canal of a subject (16) to non-invasively sense at least one physiological parameter of the subject which one physiological parameter is associated with at least one physiological condition of the subject. An analyzing device (48) is operatively coupled to the physiological parameter measuring device (14) to analyze the sensed physiological parameter and detect the physiological condition of the subject (16). Based on the detection and analysis of the physiological condition of the subject (16), a stimulating device (20) stimulates the subject (16) with the physiological parameter measuring device (14) within or near the ear canal of the subject (16) to mitigate the physiological condition of the subject (16).

Claims

1. A monitoring and therapy system comprising:

an in-the-ear canal probe configured to be disposed within the ear canal of a subject and configured to non-invasively sense at least one physiological parameter of the subject with at least one sensor, wherein the at least one physiological parameter is indicative of respiration cessation of the subject, and wherein the in-the-ear canal probe includes an inflatable balloon configured to position the at least one sensor proximate to tissue within the ear canal upon inflation, the at least one sensor operatively coupled to a surface of the balloon;

an analyzing device operatively coupled to the in-the-ear canal probe, wherein the analyzing device is configured to analyze the at least one sensed physiological parameter and configured to determine respiration cessation of the subject based on the analysis; and

a stimulating device configured to stimulate the subject with the in-the-ear canal probe to mitigate the respiration cessation of the subject, wherein the stimulating is based on the determination and includes providing an audible message to the subject without waking the subject, wherein the audible message reminds the subject to breath and/or turn on a side of the subject.

2. The system as set forth in claim 1, wherein the at least one sensed physiological parameter includes respiration by the subject and, when the respiration cessation is determined by the analyzing device, the stimulating device stimulates the subject to resume respiration.

3. The system as set forth in claim 2, wherein the analyzing device is configured to compare the sensed respiration with a physiological threshold and configured to determine the respiration cessation based on the comparison, wherein the stimulating device is configured to stimulate the subject so that the subject resumes respiration.

4. The system as set forth in claim 2, wherein the at least one sensed physiological parameter further includes at least one of blood oxygen level (SpO₂), pulse, and blood pressure, wherein the sensors are disposed on an exterior of the in-the-ear canal probe.

5. The system as set forth in claim 4, wherein the analyzing device is configured to compare a combination of at least the sensed respiration, the sensed blood oxygen level (SpO₂) and the sensed pulse with a combination of physiological thresholds and configured to determine the respiration cessation based on the combined analysis to minimize a number of erroneous stimulations, and wherein the stimulating device is configured to stimulate the subject so that the subject resumes respiration.

6. The system as set forth in claim 2, further including:

a speaker configured to be disposed in the in-the-ear canal probe, wherein the speaker is configured to provide the audible message.

7. The system as set forth in claim 1, wherein the in-the-ear probe includes:

a tube configured to be inserted into the ear canal of the subject;

a first device disposed on an exterior of the tube and inserted with the tube into the ear canal of the subject, wherein the first device senses at least respiration of the subject; and

a second device disposed on an exterior of the tube and inserted with the tube into the ear canal of the subject, wherein the second device produces an audible message when the respiration cessation is determined, and wherein the audible message stimulates the subject to resume respiration.

8. The system according to claim 1, further including:

a behind-the-ear monitoring device including the analyzing device;

wherein the at least one physiological parameter includes respiration, pulse, and blood oxygen level (SpO₂);

wherein the at least one sensor includes a microphone sensing the respiration; and

,

wherein the analyzing device is configured to compare a combination of the sensed respiration, the sensed blood oxygen level (SpO₂), and the sensed pulse with a combination of physiological thresholds and configured to determine the respiration cessation based on the combined analysis to minimize a number of erroneous stimulations.

9. A method comprising:

inserting an in-the-ear probe which carries sensors and a stimulating device into an auditory canal of a sleeping subject, the in-the-ear probe including an inflatable balloon configured to position at least some of the sensors proximate to tissue within the auditory canal to sense physiological parameters, the at least some of the sensor operatively coupled to a surface of the balloon, the sensors including at least a microphone, light emitting diodes (LEDs) and an infrared (IR) source, and the physiological parameters including at least respiration rate, blood oxygen level (SpO₂), and pulse rate;

non-invasively sensing the physiological parameters of the subject within an auditory canal of the subject;

analyzing the sensed respiration rate, the sensed pulse rate, and the sensed blood oxygen level (SpO₂) to determine respiration cessation; and

,

in response to determining the respiration cessation of the subject, stimulating the subject with the stimulating device in the auditory canal to mitigate the respiration cessation, wherein the stimulating includes providing a subconscious message to the sleeping subject without waking the subject, wherein the subconscious message reminds the subject to breathe and/or to turn onto a subject side.

10. The method as set forth in claim 9, wherein the stimulating includes providing a subconscious message into the auditory canal of the sleeping subject without waking the subject.

11. The method as set forth in claim 9, wherein the step for analyzing includes:

comparing the sensed respiration rate with a physiological threshold.

12. The method as set forth in claim 9, further including:

non-invasively sensing blood pressure with one or more sensors disposed on an exterior of the in-the-ear probe;

wherein the step for analyzing further includes analyzing the sensed blood pressure to determine the respiration cessation.

13. The method as set forth in claim 9, wherein the step for analyzing includes:

comparing the sensed respiration rate, the sensed blood oxygen level (SpO₂) and the sensed pulse rate with a combination of physiological thresholds; and

based on a comparison, determining the respiration cessation.

14. The method as set forth in claim 9, wherein the analyzing includes determining obstructive sleep disordered breathing (OSDB) events, and further including:

transmitting at least one of the sensed physiological parameters and determined OSDB events to a computerized unit; and

recording at least one of an entire sleep activity and a number and severity of the OSDB events.

15. The method as set forth in claim 14, further including one of:

performing polysomnographic diagnostic analysis of the recorded OSDB events, and

transferring at least one of the collected and the analyzed data to a Polysomnography Lab for polysomnographic diagnostic analysis.

16. An apparatus for performing the method of claim 9.

17. The method as set forth in claim 9, further including:

inflating the inflatable balloon of the in-the-ear probe after inserting the in-the-ear probe into the auditory canal of the subject, wherein the inflatable balloon positions the sensors proximate to tissue within the auditory canal with adequate pressure to ensure coupling of the sensors with the tissue but without causing decreased perfusion or blanching of the tissue.

18. A system for monitoring and treating obstructive sleep disordered breathing (OSDB) comprising:

an in-the-ear sensing device configured to be disposed within an ear canal of a subject and configured to non-invasively sense a plurality of physiological parameters, including respiration, pulse, and blood oxygen level (SpO₂), of the subject with at least one sensor, wherein the physiological parameters are indicative of the OSDB, wherein the at least one sensor includes a microphone sensing the respiration, and wherein the in-the-ear sensing device includes an inflatable balloon configured to position the at least one sensor proximate to tissue within the ear canal upon inflation, the at least one sensor operatively couple to a surface of the balloon;

a behind-the-ear monitoring device operatively coupled to the in-the-ear sensing device to communicate with the in-the-ear sensing device, the behind-the-ear monitoring device including;

an analyzing device configured to analyze the sensed physiological parameter to determine an OSDB event based on the analysis, wherein the analysis includes comparing a combination of the sensed respiration, the sensed pulse, and the sensed blood oxygen level (SpO₂) with a combination of physiological thresholds; and

a device disposed in the in-the-ear sensing device configured to stimulate the subject to mitigate the OSDB event, wherein the stimulating is based on the determined OSDB event.

19. The system as set forth in claim 18, wherein the at least one sensor is configured to be positioned on an exterior of the in-the-ear sensing device.

20. The system as set forth in claim 18, wherein the physiological thresholds are selected based on medical history of the subject.

21. The system as set forth in claim 18, wherein the in-the-ear sensing device includes:

a device configured to generate a subconsciously audible signal hearable by the subject, wherein the audible signal urges the subject, without waking the subject, to resume breathing or to turn onto a subject side.

22. The system as set forth in claim 18, further including:

a wireless transceiver, operationally coupled with the monitoring device, configured to wirelessly transmit at least one of the physiological parameter and the determined OSDB event, one of continuously, periodically at a predetermined rate, on-demand, and upon detection of the OSDB event; and

a computerized unit operationally coupled to the transceiver configured to record at least one of an entire sleep activity and a number and severity of the OSDB events.

23. The system as set forth in claim 22, wherein the computerized unit one of performs polysomnographic diagnostic analysis of the recorded OSDB events and electronically transfers one of the recorded and analyzed data to a Polysomnography Lab.