Method and device for quantitative analysis of sleep disturbances

• US 6,120,441 A
• Filed: 07/02/1998
• Issued: 09/19/2000
• Est. Priority Date: 10/16/1995
• Status: Expired due to Term

• Current Assignee: ResMed R&D Germany GmbH (ResMed Incorporated)
• Original Assignee: Map Medizintechnik Fur ARZT und Patient GmbH
• Inventors: Griebel, Peter
• Primary Examiner(s): O'Connor, Cary
• Assistant Examiner(s): ASTORINO, MICHAEL C
• Application Number:
  US09/051,545
• Time in Patent Office: 810 Days
• Field of Search: 128/204.21-204.23, 600/300, 600/301, 600/529-539, 600/481-500
• US Class Current: 600/300
• CPC Class Codes: A61B 5/113 occurring during breathing
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61B 7/003 Detecting lung or respiration noise

Abstract

The invention relates to an apparatus and a method for the stationary and ambulant detection, recording and quantitative analysis of sleep disorders, sleep-related respiratory disturbances, cardiac rhythm disturbances, myoclonia, variations in blood pressure, depth of sleep parameters, movement parameters and disorder parameters for the quality control of diagnoses. According to the invention, various sensors detect a patient'"'"'s body functions which are stored in a recorder. The stored data are then transferred to a computer where they are analyzed and evaluated.

Claims

1. Apparatus for the qualitative and/or quantitative analysis of sleep disorders, comprising a plurality of means for detecting body functions, a mobile recorder connected to the means, for recording the measured signals of the means, and a computer connected to the recorder, for storing and evaluating the measured signals, characterized by

(a) means (9) for detecting the heart potential,

(b) a pulse oximeter (10) for detecting the oxygen content of the blood, and

(c) a means for detecting the blood pressure from the pulse wave velocity and/or the change thereof, wherein the pulse wave velocity and/or the change thereof is determined from the heart potential signal and the signal for the measurement of the oxygen of the blood.

2. The apparatus according to claim 1, wherein the means (9) for detecting the heart potential comprises three ECG electrodes.

3. The apparatus according to claim 1, wherein the pulse oximeter (10) comprises different sensors.

4. The apparatus according to claim 1, wherein at least one means from the following group is provided:

(a) means (4) for detecting respiratory sounds,

(b) means (11) for detecting the positive pressure respiration,

(c) means (5) for detecting the respiratory flow,

(d) means (6,

     7) for detecting the respiratory activity,

(e) means (12) for detecting the body position,

(f) means (8) for detecting the movements of the body, and

(g) means for detecting electrophysiological parameters.

5. The apparatus according to claim 4, wherein the means (4) for detecting the respiratory sounds comprise an electret microphone.

6. The apparatus according to claim 1, wherein the means for detecting the body position (12) comprise four mercury switches for detecting five body positions.

7. The apparatus according to claim 1, wherein the means (8) for detecting the movements of the body comprise a piezo element.

8. The apparatus according claim 1, wherein the means (11) for detecting the pressure respiration comprise a pressure sensor.

9. The apparatus according to claim 1, wherein the means (5) for detecting the respiratory flow comprise a thermoelement.

10. The apparatus according to claim 1, wherein the means (5) for detecting the respiratory flow comprise a thermistor.

11. The apparatus according to claim 1, wherein the means (6, 7) for detecting the respiratory activity comprise a piezo element.

12. The apparatus according to claim 1, wherein the means (6) for detecting the respiratory activity are integrated in the means (12) for detecting the body position.

13. The apparatus according to claim 1, wherein also means (14) for recording external ambulant signals are provided.

14. The apparatus according to claim 1, wherein at least one alarm generator is provided.

15. The apparatus according to claim 1, wherein an alarm generator monitors the oxygen content of the blood.

16. The apparatus according to claim 1, wherein an alarm generator monitors the heart rate.

17. The apparatus according to claim 1, wherein means for taking into account noise signals are provided.

18. The apparatus according to claim 1, wherein the apparatus is programmable in accordance with a desired use.

19. The apparatus according to claim 1, wherein the apparatus is suitable for stationary or mobile operation.

20. The apparatus according to claim 1, comprising a means for correlation and/or comparison of respiratory and cardiological signals.

21. Method for the quantitative analysis of sleep disorders, characterized by the steps:

programming a recorder (3) in accordance with a desired examination,

detecting the heart potential,

detecting the oxygen content of the blood by means of a pulse oximeter (10),

detecting the blood pressure from the pulse wave velocity and/or the change thereof, wherein the pulse wave velocity and/or the change thereof is determined from the heart potential signal and the signal for the measurement of the oxygen of the blood,

recording data provided by at least one sensor, controlled by the recorder (3),

supplying the data to a computer (1) for evaluation,

evaluating the data by means of correlation of the signal curves and deriving further data from the recorded data, and

displaying the data in the form of signal curves, tables and/or histograms.