Sleep evaluation method, sleep evaluation system, operation program for sleep evaluation system, pulse oximeter, and sleep support system
First Claim
1. A sleep evaluation method comprising the steps of:
- measuring a body angle and a blood oxygen saturation of a subject in sleep concurrently at a predetermined sampling frequency to acquire measurement data concerning the body angle and the blood oxygen saturation; and
expressing the measurement data along a time axis to evaluate a correlation between apnea based on lowering of the blood oxygen saturation and the body angle of the subject.
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Accused Products
Abstract
Measurement is made about a necessary evaluation parameter of a subject, the parameter being variable due to sleep apnea of the subject. A body position of the subject is detected in terms of angle information. The parameter measurement and the body angle detection are executed at a predetermined sampling frequency. These data are stored in a storage. A sleep evaluation system includes: an evaluation parameter detector for measuring an evaluation parameter of a subject, a body position detector for detecting a body position of the subject in terms of angle information; a storage for storing measurement data acquired by the evaluation parameter detector and by the body position detector therein; and a controller for causing the evaluation parameter detector to measure the evaluation parameter, and causing the body position detector to measure a body angle of the subject at a predetermined sampling frequency to store the measurement data in the storage.
182 Citations
19 Claims
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1. A sleep evaluation method comprising the steps of:
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measuring a body angle and a blood oxygen saturation of a subject in sleep concurrently at a predetermined sampling frequency to acquire measurement data concerning the body angle and the blood oxygen saturation; and
expressing the measurement data along a time axis to evaluate a correlation between apnea based on lowering of the blood oxygen saturation and the body angle of the subject.
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2. A sleep evaluation system comprising:
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an evaluation parameter detector for measuring an evaluation parameter of a subject, the evaluation parameter being varied due to sleep apnea of the subject;
a body position detector for detecting a body position of the subject in terms of angle information;
a storage for storing measurement data acquired by the evaluation parameter detector and by the body position detector therein; and
a controller for causing the evaluation parameter detector to measure the evaluation parameter, and causing the body position detector to measure a body angle of the subject at a predetermined sampling frequency to store the measurement data in the storage. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A sleep evaluation system comprising:
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a pulse oximeter including a blood oxygen saturation measuring device for acquiring measurement data concerning a blood oxygen saturation of a subject, a body position detector for acquiring measurement data concerning a body angle of the subject, a storage for storing the measurement data acquired by the blood oxygen saturation measuring device and by the body position detector therein, and a controller for causing the blood oxygen saturation measuring device to acquire the measurement data concerning the blood oxygen saturation of the subject, and causing the body position detector to acquire the measurement data concerning the body angle of the subject at a predetermined sampling frequency to store the measurement data acquired by the blood oxygen saturation measuring device and by the body position detector in the storage;
a fastening device for securely holding the body position detector of the pulse oximeter on a body trunk portion of the subject; and
a processor for acquiring the measurement data stored in the storage of the pulse oximeter to analyze a correlation between a variation in the blood oxygen saturation and the body angle of the subject for display. - View Dependent Claims (10, 11, 12, 13)
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14. A pulse oximeter comprising:
a blood oxygen saturation measuring device for acquiring measurement data concerning a blood oxygen saturation of a subject;
a body position detector for acquiring measurement data concerning a body angle of the subject;
a storage for storing the measurement data acquired by the blood oxygen saturation measuring device and by the body position detector therein; and
a controller for causing the blood oxygen saturation measuring device to acquire the measurement data concerning the blood oxygen saturation of the subject, and causing the body position detector to acquire the measurement data concerning the body angle of the subject at a predetermined sampling frequency to store the measurement data acquired by the blood oxygen saturation measuring device and by the body position detector in the storage. - View Dependent Claims (15, 16)
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17. A program product for operating a sleep evaluation system provided with an evaluation parameter detector for measuring an evaluation parameter of a subject, the evaluation parameter being varied due to sleep apnea of the subject, a body position detector for detecting a body position of the subject in terms of angle information, a storage for storing measurement data acquired by the evaluation parameter detector and by the body position detector therein, and an analyzer, the program product comprising:
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a program which allows a computer to execute the steps of making the evaluation parameter detector to measure the evaluation parameter, and making the body position detector to measure a body angle of the subject at a predetermined sampling frequency to acquire measurement data concerning the evaluation parameter and the body angle, making the storage to store the measurement data therein, and making the analyzer to analyze a correlation between a variation in the evaluation parameter and the body angle of the subject based on the measurement data stored in the storage; and
a signal bearing media bearing the program.
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18. A program product for operating a sleep evaluation system provided with a pulse oximeter including a blood oxygen saturation measuring device for acquiring measurement data concerning a blood oxygen saturation of a subject, a body position detector for acquiring measurement data concerning a body angle of the subject, a storage for storing the measurement data acquired by the blood oxygen saturation measuring device and by the body position detector therein, and a processor, the program product comprising:
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a program which allows a computer to execute the steps of making the blood oxygen saturation measuring device to acquire measurement data concerning the blood oxygen saturation, and making the body position detector to acquire measurement data concerning the body angle at a predetermined sampling frequency, making the storage to store the measurement data therein, and making the processor to acquire the measurement data stored in the storage of the pulse oximeter to analyze a correlation between a variation in the blood oxygen saturation and the body angle of the subject; and
a signal bearing media bearing the program.
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19. A sleep support system comprising:
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a bed for supporting a subject in a lying position;
a bed driver for adjusting an angle of the bed; and
a controller for determining the angle of the bed adjusted by the bed driver, the controller being operative to cause a measuring device to measure a body angle and a blood oxygen saturation of the subject in sleep on the bed concurrently at a predetermined sampling frequency to acquire measurement data concerning the body angle and the blood oxygen saturation, to evaluate a correlation between apnea based on lowering of the blood oxygen saturation and the body angle of the subject by expressing the measurement data along a time axis, to determine a body angle of the subject with no or less likelihood of apnea, and to output the body angle of the subject with no or less likelihood of apnea as a designated angle of the bed to be adjusted by the bed driver.
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Specification