JPH09234189A - Sleep apnea data storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device which is formed by integrating an abdominal respiration sensor with a apnea sensor and stores the sleep apnea data by just sticking the apnea sensor on the abdominal part, when only the abdominal respiration is detected. SOLUTION: An abdominal respiration sensor installed on the chest wall (or the abdominal wall) constitutes capacitance between two electrode plates 12 attached to an apnea monitor main body 1 and the chest wall (or the abdominal wall), this capacitance constitutes a part of a CR generating circuit in the main body side by a capacitance type sensor which converts the movement of the chest wall (or the abdominal wall) due to inspiration and expiration into the changes in the capacitance, and the abdominal respiration signal formed by converting the change in the capacitance into the change in generating frequency is output to the CPU.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to sleep apnea data.
Data recording device.

[0002]

2. Description of the Related Art As shown in FIG. 1, a sleep apnea data recording apparatus records respiratory signal data during sleep detected by a nasal respiratory sensor 2 on an apnea monitor body 1 and after recording. An apparatus for connecting the personal computer system 4 with the interface scale 3 to read out recorded data, process the data, display the result, print out and manage the data.

A nasal respiratory sensor is the only sensor in the conventional sleep apnea data recording device. However, since the nasal breathing sensor detects nasal breathing by the change in resistance of the thermistor, nasal breathing may not be detected when breathing or snoring with the mouth open.

Therefore, a method is known in which the movement of the chest wall or abdominal wall due to abdominal respiration is detected to supplement the respiratory data for which no nasal respiration could not be detected. As a method,
Known are methods for detecting abdominal respiration based on changes in the resistance value of carbon rubber, impedance methods, and the like.

[0005]

However, in the above method, a sensor must be attached to the abdomen separately from the apnea monitor main body. The present invention, the abdominal breathing sensor is integrated with the apnea monitor main body, in the case of detecting only abdominal respiration, it is possible to record the apnea data during sleep by simply pasting the apnea monitor main body to the abdomen, Moreover, it is an object of the present invention to provide a device capable of recording more accurate apnea data in combination with detection of nasal breathing.

[0006]

[Means for Solving the Problems] Breathing signal data during sleep is recorded in the apnea monitor main body, and after the recording is completed, the recording data is read by connecting with a personal computer system, and the data is processed.
In the sleep apnea data recording device that displays the results, prints them out, and manages the data, a nasal breathing sensor mounted between the nose and mouth uses the electrical resistance to detect temperature changes in the inspiratory and expiratory airflows. Is a thermistor-type breathing sensor that converts the change in electrical resistance into a change in oscillation frequency to the CPU by the thermistor on the sensor side forming part of the CR oscillation circuit on the main body side. An apnea monitor main body is provided with a means for outputting, and an abdominal respiration sensor attached to the chest wall (or abdominal wall) forms a capacitance between the electrode plate attached to the apnea monitor main body and the chest wall (or abdominal wall), Capacitive sensor that converts the movement of the chest wall (or abdominal wall) due to inspiration and expiration into a change in capacitance. This capacitance forms a part of the CR oscillation circuit on the main unit side, and changes in capacitance The belly that has been converted to a change in the oscillation frequency And means for outputting a No. 吸信 the CPU apnea monitor body. Also, only the abdominal respiration sensor is attached to the chest wall (or abdominal wall), and only the abdominal respiration signal is CP
It may be output to U.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG.
FIG. 3 is a schematic configuration diagram of a sleep apnea data recording device.
The respiratory signal data during sleep detected by the nasal respiratory sensor 2 is recorded by the apnea monitor main body 1.

After the data recording is completed, the main body 1 is connected to the personal computer system 4 by the interface scale 3 to read the recorded data, process the data, display the result and display the data. Data management.

FIG. 2 is a front view (A) of the nasal respiratory sensor 2 and (B).
It is a top view. Reference numeral 21 denotes a sensor connector, which connects the nasal respiratory sensor 2 to the input / output connector of the apnea monitor body 1. Reference numeral 22 is a sensor cable, and 23 is a sensor molding portion. The sensor molding portion 23 is a medical tape with the surface on which the pair of thermistors 24 are attached between the nose and mouth of the patient facing up. Install with.

FIG. 3 is a circuit diagram of the nasal respiratory sensor 2.
A pair of thermistors 24 for converting the temperature changes of the inspiratory and expiratory airflows into electric resistance changes are connected to the sensor connector 21, and when the sensor connector 21 is connected to the input / output connector 11 of the main body 1, the nose A pair of servers on the breathing sensor 2 side
The mister 24 constitutes a part of the nasal respiratory oscillation circuit I (which constitutes a CR oscillation circuit) on the main body 1 side (FIG. 4), and the change of the electric resistance is converted into the change of the oscillation frequency by the transmission circuit I, The nasal breathing signal is input to the CPU 5 of the apnea monitor body 1.

5A and 5B are external views of the apnea monitor body 1. FIG. 5A is a front view, FIG. 5B is a side view, and FIG. 5C is a bottom view. 6A and 6B are enlarged views of the internal structure of the apnea monitor main body 1, where FIG. 6A is a side sectional view and FIG. 6B is a rear view.

Reference numeral 12 is a component of the abdominal respiration sensor 2
It is a single electrode plate and is attached to the back surface of the apnea monitor body 1 (FIG. 6). The electrode plate 12 is covered with an insulating film 13 which also serves as a name plate. Insulation film 13
The material is preferably lexan film. Insulating film 1
When the back surface of the main body 1 of the electrode plate 12 covered with 3 is attached to the chest wall (or abdominal wall) of the patient with a medical tape, an electrostatic capacitance is formed between the back wall and the chest wall (or abdominal wall). That is, a variable capacitor is formed between the chest wall (or abdominal wall) of the patient and the electrode plate 12.

The variable capacitor converts movements of the chest wall (or abdominal wall) due to inspiration and expiration into changes in capacitance. The electrode plate 12 has a foot portion 12a of the printed circuit board 1
4 and constitutes a part of an abdominal respiration oscillation circuit II (which constitutes a CR oscillation circuit) on the printed circuit board 14 (FIG. 4), and this oscillation circuit II changes the capacitance. The abdominal respiration signal is converted into a change in the oscillation frequency and input to the CPU 5 of the main body 1.

As shown in FIG. 4, the circuit configuration of the apnea monitor 1 includes a nasal respiratory oscillation circuit I which is connected to the nasal respiratory sensor 2 to form a CR oscillation circuit, the chest wall (or abdominal wall) of the patient, and the electrode plate 12. It is composed of an abdominal respiration oscillation circuit II which is a CR oscillation circuit having a variable capacitor formed between them as a part thereof, and a battery circuit III which supplies power to each circuit, and these circuits are controlled by the CPU 5.

Next, an outline of the operation of one embodiment of the present apparatus will be described with reference to FIGS. (1) To attach the battery to the main body, the battery cover 18 of the main body
Open a, attach the battery 18 and close the battery pig 18a (FIG. 5). (2) The nasal breathing sensor 2 is mounted between the nose and mouth of the patient with the thermistor 24 surface facing upward with a medical tape. (3) Connect the nasal respiratory sensor 2 to the main body 1. (4) The main body 1 is mounted on the chest wall (or abdominal wall) of the patient with a medical tape. When only the nasal respiratory sensor 2 is used without recording the abdominal respiration signal, the clip 17 may be used to attach the main body 1 to the clothes. (5) Press the start key-15. A battery voltage inspection is performed by the operation of the battery voltage drop detection circuit 30 according to a command from the CPU 5, and when the battery voltage is equal to or higher than a predetermined voltage, a green LED
16 lights up for 3 seconds and starts data recording. When the voltage is lower than the predetermined voltage, the red LED 16 blinks for 5 seconds and the data recording is not started. (6) For one minute after starting the data recording, the green LED 16 lights up during inhalation and the red LED 16 lights up during exhalation to display the respiratory cycle. The data of changes in the oscillation frequency of the nasal respiratory signal and the abdominal respiratory signal input to the CPU 5 are processed and stored in the memory 31 as the respiratory signal data. The inclination of the main body 1 is monitored by the posture detection switch circuit 32 mounted inside the main body 1, and whether it is standing or lying down is discriminated and stored in the memory 31. (7) When the data recording is completed, the nasal respiratory sensor 2 and the main body 1 are removed from the patient. (8) Connect the main unit 1 and the personal computer system 4 to the accessory interface.
Connect with the face cable 3 and read and process the data recorded by the accessory apnea data processing program.
to manage.

[0016]

The abdominal respiration sensor is integrated with the apnea monitor main body, and the abdominal respiration signal can be easily measured only by mounting the monitor main body on the chest wall (or abdominal wall), which reduces the burden on the patient. It

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a sleep apnea data recording device.

FIG. 2A is a front view and FIG. 2B is a plan view of a nasal respiratory sensor.

FIG. 3 is a circuit diagram of a nasal respiratory sensor.

FIG. 4 is a circuit diagram of an apnea monitor body.

5A and 5B are external views of the apnea monitor main body, in which FIG. 5A is a front view, FIG. 5B is a side view, and FIG.

FIG. 6 is an enlarged view of the internal structure of the apnea monitor body (A).
Is a front view and (B) is a rear view.

FIG. 7 is a block diagram of an apnea monitor body.

[Explanation of symbols]

1 Apnea monitor body 2 Nasal respiration sensor 3 Interface scale 4 Personal computer system 5 CPU 11 Input / output connector 12 Electrode plate 13 Insulating film 14 Printed circuit board 15 Start key 16 LED 17 Clip 18 Battery 21 Sensor connector 22 Sensor cable 23 Sensor molding part 24 Thermistor 30 Battery voltage drop detection circuit 31 Memory 32 Attitude detection switch circuit

Claims (2)

[Claims] 1. A respiratory signal data during sleep is recorded in an apnea monitor main body, and after the recording is completed, the recording data is read out, the recorded data is processed, the result is displayed,
In a sleep apnea data recording device that prints out and manages data, a nasal respiratory sensor mounted between the nose and mouth converts temperature changes in inspiratory and expiratory airflows into changes in electrical resistance. In the thermistor type respiration sensor, the thermistor on the sensor side constitutes a part of the CR oscillation circuit on the main body side, and there is no means for outputting to the CPU a nasal respiration signal obtained by converting a change in electrical resistance into a change in oscillation frequency. The abdominal respiration sensor, which is provided on the chest monitor (or the abdominal wall) and is attached to the chest wall (or the abdominal wall), forms a capacitance between the electrode plate attached to the apnea monitor body and the chest wall (or the abdominal wall). A capacitance sensor that converts movement of the chest wall (or abdominal wall) into a change in capacitance. This capacitance forms a part of the CR oscillation circuit on the main unit side, and changes in capacitance change the oscillation frequency. The abdominal respiration signal converted into changes Sleep apnea de, characterized in that it comprises a means for outputting the PU apnea monitor body - data recording device. 2. The respiratory signal data during sleep is recorded in the apnea monitor body, and after the recording is completed, the recorded data is read out, the recorded data is processed, the result is displayed,
In the sleep apnea data recording device that prints out and manages data, the abdominal respiration sensor attached to the chest wall (or abdominal wall) is the electrode plate attached to the apnea monitor body and the chest wall (or abdominal wall). Is a capacitance type sensor that forms a capacitance between and, and converts the movement of the chest wall (or abdominal wall) due to inspiration and expiration into a change in capacitance. A sleep apnea data recording device, characterized in that the apnea monitor main body is provided with means for forming a part of the abdominal respiration signal, which is obtained by converting a change in capacitance into a change in oscillation frequency, to the CPU. .