JP2010000315A - Monitoring method of sleep state and body pressure distribution state, and apnea syndrome and decubitus prevention device using same method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To resolve the apnea syndrome by a noninvasive, non-restraint and unconscious means; and effectively prevent the decubitus (so-called bedsore). <P>SOLUTION: The apnea/infrequent respiration state is monitored by a non-restraint biosensor laid on a bed or a mattress and is resolved by a pressure control of the mat and/or a pillow. The decubitus (the so-called bedsore) is prevented by the measurement of a body pressure distribution by the sensor and the pressure control of the mat. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention measures the sleep state of a sleeping subject non-invasively, unconstrained and unconsciously to determine the apnea / hypopnea state, and changes the mat and / or pillow pressure to determine the apnea / hypopnea state. The present invention relates to a method and an apparatus for solving the problem.

  Furthermore, especially when the pressure distribution of a specific part is significantly high by measuring the body pressure distribution state of a subject during long-term treatment non-invasively, unconstrained, and unconsciously, the pressure of the mat corresponding to the position is reduced to reduce pressure ulcer ( The present invention relates to a method and apparatus for effectively preventing so-called bed slip.

  The quality and quantity of sleep has a major impact on the physical and mental health of humans. If the sleep state can be accurately measured in a non-invasive, unconstrained, and unconscious manner, it will be possible to apply not only diagnostic information from doctors, but also health monitoring at home, etc., to more comfortable operations during sleep of elderly care support devices. The significance is great.

For this purpose, various researches and developments have been made in the past, and there are many prior arts and patents for prior applications. A typical example will be described. As a prior art, a device that detects body movement by a plurality of pressure sensors and detects a breathing state and posture (see, for example, Non-Patent Document 1), a plurality of piezoelectric elements arranged in a matrix, and body pressure distribution Measuring device (see Non-Patent Document 2, for example), a device for detecting water flow (water pressure) changes in the water mat and detecting a breathing state (for example, Non-Patent Document 3), detecting snoring with a voice microphone, and vibrating a pillow There are devices that reduce snoring by causing them to occur (for example, see Non-Patent Document 4).
In addition, as a prior application patent, an acceleration sensor (piezoelectric element) attached to the abdomen or chest is used to detect an apneic state, and a device for controlling the pressure of a plurality of mats as an apnea canceling unit (for example, Patent Document 1), a device that uses a voice detection sensor (microphone) to detect snoring, tilts the bed left and right to prevent snoring (see Patent Document 2, for example), and uses biological information obtained without restriction. And a method of estimating a sleep stage and controlling a pressure ulcer prevention tool and a posture changer (see, for example, Patent Document 3).
Suzuken Corporation Sleep Recorder SD-101 Takano Co., Ltd. Air Mattress with Heart Works Body Pressure Distribution Measuring Device TANITA Corporation SLP Monitor France bed snoring reduction pillow Patent application title: Matsushita Electric Works Sleep Apnea Syndrome Prevention Device JP 2003-10259 Mr. Ohba Snoring prevention sleep bed Patent application title: Yokogawa Electric Co., Ltd., etc. Sleep stage estimation method and apparatus using the method

In the above-mentioned prior art and the prior application patents, the respiratory state and posture can be detected, but there is no solution (for example, see Non-Patent Documents 1 and 3), and the body pressure distribution is measured and combined with the air mattress. Although the posture can be changed, the pressure control of the air mattress is semi-fixed periodically (for example, rolling in a cycle of 2 hours) and is not controlled based on the measured body pressure distribution (for example, see Non-Patent Document 2). Using a voice microphone to detect snoring has been pointed out as a malfunction due to ambient noise, which is not reliable. In addition, snoring is not considered to be alleviated by only the vibration of the pillow, but rather the negative effect of sleep inhibition. Since the person having a bad sleep is away from the pillow, there is a problem that it is meaningless even if only the pillow is vibrated (see, for example, Non-Patent Document 4).
In addition, although a body-mounted type acceleration sensor is used as an apnea detection sensor, the body-mounted sensor gives a sense of incongruity to the patient, and the measurement data is not reliable because the wearing state is not stable. Furthermore, the body pressure sensor on the mat is used only for posture determination, and the obtained body pressure distribution information is not linked to the pressure ulcer prevention effect (see, for example, Patent Document 1). Since it is not practical (see, for example, Patent Document 2), there is one unconstrained sensor that obtains biological information, and thus there is a problem that body pressure distribution information cannot be obtained (see, for example, Patent Document 3).

The present invention is intended to solve the problems of such a conventional configuration, and a plurality of unrestrained biosensor sheets laid on a bed or a futon can sleep a sleeping subject. Providing a method and apparatus for measuring the state non-invasively, unconstrained and unconsciously to determine the apnea / hypopnea state and changing the pressure of multiple mats and / or pillows to eliminate the apnea / hypopnea state There is to do.
Furthermore, the body pressure distribution of the subject during long-term treatment can be measured non-invasively, unconstrained, and unconsciously using the plurality of unconstrained biosensor sheets, and this corresponds to the position when the pressure at a specific part is significantly high. An object of the present invention is to provide a method and apparatus for effectively preventing pressure sores (so-called bedsores) by reducing the pressure of the mat to be used.

  As described above, according to the method and apparatus of the present invention, when a sleeping subject falls into an apnea / hypopnea state, it can be quickly resolved and a deep sleep effect can be obtained. Furthermore, it is possible to effectively prevent pressure ulcers (so-called bedsores) that are suffering from subjects who are undergoing long-term treatment.

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, an embodiment of the present invention will be described with reference to FIG.

A pillow 2 and a plurality of mats 3 (three examples of 3a, 3b, 3c in FIG. 1) are laid on the bed or futon 1, and a plurality of biosensor sheets 4 (4a, 4b in FIG. 1) are laid thereon. 3c of 4c) is laid. An independent air pump 5 is connected to the pillow 2 and the mat 3, and an independent sensor 6 is connected to the biosensor sheet 4. The signal from the sensor 6 is introduced into the filter 7, and heart rate, respiratory discrimination and static pressure are calculated from the frequency of pressure fluctuation obtained from the biosensor. Usually, a specific sensor (for example, 4a) is used for discriminating heart rate and respiration, and all sensors are used for calculating static pressure.
Each sensor signal is connected by wire, but a wireless connection method is also considered in order to increase the troublesomeness of wiring and the operability of the device. In that case, it is desirable to adopt a passive tab method in which a sensor and an RFID (wireless identification tab) are integrated.
The discriminated heartbeat and respiration information is input to the control circuit 8, and the anaerosis fluctuation is monitored to analyze apnea and hypopnea states, and the result is stored in the storage device 9. When an apnea and / or hypopnea state is detected, the air pump 9 is driven to control the pressure of the pillow 2 and / or the mat 3. The pressure control of the pillow 2 and / or the mat 3 is to secure the airway and quickly cancel the apnea / hypopnea state, and is controlled based on a specific combination pattern, and the apnea / hypopnea state is canceled. Repeat until the combination pattern is changed. As a result, it is possible to return to a deep sleep state. For pressure control, for example, the pressure of the pillow and mat is set to three levels of large, medium and small, and the combination pattern is pillow: large, mat 3a: medium, mat 3b: large, mat 3c: small, and only the mat 3a. Change from medium to small.
Furthermore, the analysis result stored in the storage device 9 can be transmitted to the doctor or the service center 11 at a remote location on a regular basis or upon request via the communication means 10 to ask for an expert diagnosis. Doctors or service center specialists determine the need for precision diagnosis from the analysis results obtained and recommend a definitive diagnosis at an accredited body.
Further, the static pressures obtained from a plurality of biological sensor sheets 4 are compared, and if there is a sensor sheet exhibiting a remarkably high static pressure, control is performed so as to reduce the pressure of the mat at that portion and average the body pressure distribution. This can prevent pressure ulcers.
In general, a long-term care person often suffers from pressure ulcers and often suffers from sleep disorders, and the present invention is effective for both.

It is a systematic diagram of the whole system. FIG. 6 is a layout view when six mats and six sensor sheets are arranged. FIG. 5 is a layout view when three mats and sensor sheets are arranged. The mat is an inclined type. It is particularly effective for assisting in turning over.

Explanation of symbols

1 bed or futon 2 pillow (air mat type)
3 mat (air mat)
4 Biosensor sheet 5 Air pump 6 Biosensor (high-sensitivity low-frequency sensor)
7 Filter (band pass filter)
8 Processing unit (microcomputer)
9 Storage device (hard disk)
10 Communication equipment 11 Service center (resident specialist)

Claims (6)

A sleep state and body pressure distribution monitoring method characterized by comprising a plurality of unconstrained biosensor sheets and a plurality of mats and / or pillows laid on a bed or a futon, and no use of the method Respiratory syndrome and pressure ulcer prevention device. The sleep state monitoring according to claim 1, wherein a sleep state is monitored by constantly monitoring a pressure signal variation from at least one of the plurality of unconstrained biosensor sheets. Method. The sleep state monitoring method according to claim 1, wherein an apnea / hypopnea state is determined based on irregular fluctuations in the pressure signal. When the apnea / hypopnea state is determined, the airway is secured by automatically controlling the pressures of the plurality of mats and / or pillows, and the apnea / hypopnea state can be quickly resolved to obtain a deep sleep effect. The apnea syndrome prevention apparatus according to claim 1. 2. The body pressure distribution state monitoring method according to claim 1, wherein the body pressure distribution is measured by comparing pressure signals of the plurality of unconstrained biological sensor sheets. When the pressure of the specific sensor sheet among the plurality of unconstrained biosensor sheets is significantly high, pressure ulcer can be effectively prevented by reducing the pressure of the mat corresponding to the specific sensor sheet position. The pressure ulcer prevention device according to claim 1, characterized in that:

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