Bio-mask

• US 7,204,250 B1
• Filed: 12/16/1999
• Issued: 04/17/2007
• Est. Priority Date: 12/16/1999
• Status: Expired due to Fees

• Current Assignee: Compumedics Limited
• Original Assignee: Compumedics Limited
• Inventors: Burton, David
• Primary Examiner(s): MITCHELL, TEENA KAY
• Application Number:
  US09/465,054
• Time in Patent Office: 2,679 Days
• Field of Search: 128/704.21, 128/206, 128/21, 128/207.11, 128/205.23, 128/206.12, 128/206.18, 128/206.21, 128/206.27, 128/206.28, 600/508, 600/529, 600/537, 600/538, 600/544, 600/545, 600/534
• US Class Current: 128/205.23
• CPC Class Codes: A61B 5/0878 using temperature sensing means
• CPC Class Codes: A61B 5/282 Holders for multiple electrodes for introduction into the body A61B5/287
• CPC Class Codes: A61B 5/296 for electromyography [EMG]
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/386 Accessories or supplementary instruments therefor
• CPC Class Codes: A61B 5/6803 Head-worn items, e.g. helmets, masks, headphones or goggles
• CPC Class Codes: A61M 16/021 operated by electrical means A61M16/202 – A61M16/205 take precedence
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0605 Means for improving the adaptation of the mask to the patient
• CPC Class Codes: A61M 16/0633 with forehead support
• CPC Class Codes: A61M 16/0683 Holding devices therefor
• CPC Class Codes: A61M 16/0694 Chin straps
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2205/0238 the material being a coating or protective layer
• CPC Class Codes: A61M 2230/04 Heartbeat characteristics, e.g. ECG, blood pressure modulation
• CPC Class Codes: A61M 2230/08 Other bio-electrical signals
• CPC Class Codes: A61M 2230/10 Electroencephalographic signals
• CPC Class Codes: A61M 2230/205 partial oxygen pressure (P-O2)
• CPC Class Codes: A61M 2230/30 Blood pressure A61M2230/04 takes precedence
• CPC Class Codes: A61M 2230/50 : Temperature
• CPC Class Codes: A61M 2230/60 : Muscle strain, i.e. measured on the user
• CPC Class Codes: A61M 2230/62 : Posture
• CPC Class Codes: A61M 2230/63 : Motion, e.g. physical activity

Abstract

The invention relates to a breathing mask for use in monitoring a patient. The mask can have sensors on the body of the mask and on the associated straps or caps. The mask can be used to monitor breathing problems or to monitor a patient during anesthesia. The data acquired from the mask sensors and related sensors can be stored or fed into a computer to analyze the patient'"'"'s condition and provide feedback information.

Claims

1. A system for monitoring a patient during gas delivery comprising:

a breathing mask including a body having an internal surface, an external surface, and a perimeter surface shaped to form a seal around the patient'"'"'s nose; and

a headgear adapted to retain the body on the patient'"'"'s head, the headgear having at least one EEG sensor positioned thereon to detect brain activity;

a processor adapted to receive a signal from said at least one EEG sensor, said processor determining said patient'"'"'s sleep stage based at least in part on said signal; and

a gas delivery device in communication with said breathing mask, said gas delivery device delivering gas to the patient based on a processor determination of said patient'"'"'s breathing and sleep stage.

2. The system of claim 1, wherein the headgear is a cap.

3. The system of claim 1, wherein the perimeter surface is adapted to detect ECG.

4. The system of claim 1, and further comprising a flow sensor connected to the internal surface.

5. The system of claim 1, and further comprising an oxygen saturation sensor extended from the mask.

6. The system of claim 1, wherein the perimeter surface is adapted to detect muscle movements.

7. A nasal ventilation system comprising:

a mask including a body having an internal surface, an external surface, and a perimeter surface adapted to form seal around a patient'"'"'s nose,

an airhose extending from the body;

a headgear adapted to retain the body on the patient'"'"'s head, the headgear having at least one EEG sensor positioned thereon to detect brain activity;

at least one EMG sensor connected to the body and positioned to detect muscle activity relating to a sleep stage;

a processor in communication with said at least one EEG sensor and said at least one EMG sensor, said processor determining said patient'"'"'s sleep stage based at least in part on a signal received from said at least one EEG sensor; and

a gas delivery device in communication with said mask, said gas delivery device changing a delivered air pressure to said patient based on a sleep stage determination by said processor.

8. The system of claim 7, and further comprising a first sensor positioned on the internal surface for detecting nasal breathing and a second sensor positioned on the external surface for detecting oral breathing.

9. The system of claim 8, wherein the first and second sensors are thermal sensors.

10. The system of claim 7, and further comprising at least one EEG sensor positioned on the perimeter surface.

11. The system of claim 7, and further comprising at least one EOG sensor positioned on the perimeter surface.

12. The system of claim 7, wherein a portion of the perimeter surface is comprised of a conductive carbonized rubber material.

13. The system of claim 7, and further comprising a plurality of straps coupled to the body, the straps having at least one sensor positioned thereon.

14. The system of claim 7, and further comprising a position sensor coupled to the body.

15. The system of claim 7, and further comprising a microphone coupled to the body.

16. The system of claim 7, wherein the perimeter surface is provided with a thermally sensitive material, and wherein said system adjusts a gas pressure based on a processor determination of an air leak as indicated by a change in said thermally sensitive material.

17. The system of claim 7, and further comprising a patient recycled air detection system positioned on the internal surface.

18. A nasal ventilation mask assembly comprising:

a nasal mask adapted to form a seal around a patient'"'"'s nose;

a headgear adapted to retain the body on the patient'"'"'s head, the headgear having an EEG sensor positioned thereon to contact a patient'"'"'s forehead upon application of the nasal mask;

a processor adapted to receive signals from said EEG sensor and to determine said patient'"'"'s sleep stage;

a gas delivery device in communication with said nasal mask, said gas delivery device changing a delivered gas pressure to said patient based on said processor determination of said patient'"'"'s sleep stage.

19. The mask assembly of claim 18 and further comprising a computer in communication with the sensor, the computer adapted to determine arousal.

20. The mask assembly of claim 18 and further comprising an EMG sensor coupled to the nasal mask.

21. A breathing mask assembly for monitoring a patient during gas delivery comprising:

a body having an internal surface, an external surface, and a perimeter surface shaped to form a seal around the patient'"'"'s nose and mouth;

a headgear adapted to retain the body on the patient'"'"'s head, the headgear having at least one EEG sensor positioned thereon so as to be positioned on a top portion of a patient'"'"'s head;

a processor adapted to receive a signal from said at least one EEG sensor, said processor determining said patient'"'"'s sleep stage based at least in part on said signal;

and a gas delivery device controlled by said processor to adjust gas pressure delivered to said patient based at least in part on a determination of said patient'"'"'s sleep stage.

22. A nasal ventilation system comprising:

a nasal mask adapted to form a seal around a patient'"'"'s nose, the nasal mask having a body, an internal surface, an external surface, and a perimeter surface;

a headgear adapted to retain the body on a patient'"'"'s head, the headgear having at least one EEG sensor positioned thereon so as to be positioned on a top portion of a patient'"'"'s head;

an EMG sensor located on the perimeter surface;

a computer in communication with the EEG and EMG sensor, the computer adapted to determine sleep state based on an EEG signal and EMG signal of said patient; and

a gas delivery device in communication with said nasal mask and said computer, said gas delivery device adjusting a flow of air to the patient based on determined sleep stages of said patient.

23. The system of claim 22, and further comprising a sensor located on the external surface for determining if a patient is breathing through his mouth.

24. The system of claim 22, and further comprising a flow sensor located on the internal surface.