JP2000005152A - Diabetes diagnostic unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately diagnose whether or not a person suffers from diabetes from the difference between the blood oxygen concentration at a portion having a high oxygen partial pressure of a blood vessel and the blood oxygen concentration at a portion having a low oxygen partial pressure of the blood vessel based on the signals of light receiving means without collecting blood and to display the diagnosis result on a display means. SOLUTION: A first light emitting means 1, a second light emitting means 3, a first light receiving means 2 and a second light receiving means 4 are used. Whether or not a person suffers from diabetes is accurately diagnosed from the difference between the blood oxygen concentration at a portion having a high oxygen partial pressure of a blood vessel and the blood oxygen concentration at a portion having a low oxygen partial pressure of the blood vessel based on the signals of the light receiving means 2, 4 without collection blood, and the diagnosis result is displayed on a display means 10. The first light emitting means 1 and the second light emitting means 3 emit the light with two wavelengths of 680 nm and 830 nm, a semiconductor laser can be used for them, and they can be miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diabetic diagnostic apparatus which can easily determine the possibility of diabetes and a method of using the same.

[0002]

2. Description of the Related Art Conventionally, the judgment of diabetes is made together with the measurement of blood sugar level by measuring blood collected during a health checkup.

[0003]

However, this method requires a relatively large amount of blood for each individual measurement and is quite painful.

[0004]

According to the present invention, a first light emitting means, a second light emitting means, a first light receiving means and a second light receiving means are used, and a blood vessel is obtained from a signal of each light receiving means. The difference between the blood oxygen concentration at the site with a high oxygen partial pressure and the blood oxygen concentration at the site with a low oxygen partial pressure in the blood vessel accurately diagnoses and displays whether or not the patient has diabetes without blood sampling. It is a diabetes diagnostic device that displays the diagnostic results on the means.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The first aspect of the present invention is a first aspect of the present invention.
Light emitting means, second light emitting means, first light receiving means and second light emitting means.
The light receiving means is used to obtain a blood sample from the difference between the blood oxygen concentration at a site where the oxygen partial pressure of the blood vessel is high and the blood oxygen concentration at a site where the oxygen partial pressure of the blood vessel is low based on the signal of each light receiving means. Without the above, a diabetes diagnostic device that accurately diagnoses whether or not the patient has diabetes and displays the diagnosis result on display means.

According to a second aspect of the present invention, a finger is selected as a portion of a blood vessel having a high oxygen partial pressure, and an ear is selected as a portion of a blood vessel having a low oxygen partial pressure.
Also, it is a diabetes diagnostic device that can be easily measured.

According to a third aspect of the present invention, the first light-emitting means and the second light-emitting means have two wavelengths of 680 nm and 830 nm.
A diabetic diagnostic device that emits light of two wavelengths and can be used with a semiconductor laser and is downsized.

According to a fourth aspect of the present invention, the control means includes:
A diagnosis result in a state where the fasting state is continued is displayed on the display means, so that a method of using a diabetes diagnostic device capable of performing highly accurate diagnosis is provided.

[0009]

Embodiments of the present invention will be described below. FIG.
FIG. 2 is a block diagram showing the configuration of the present embodiment. Reference numeral 1 denotes a first light emitting unit that emits light to irradiate a finger, which is a site of a blood vessel having a high oxygen partial pressure, and is constituted by a light emitting element or the like. Reference numeral 2 denotes a first light receiving unit that receives light transmitted through a finger among the light emitted by the first light emitting unit 1, and is constituted by a light receiving element. The first light emitting means 1 and the first light receiving means 2 are arranged in a first probe 12 into which a fingertip is inserted. The measurement site having a low oxygen partial pressure includes the skin of the forehead of the head, the heel of the foot, the head of the nose, and the like in addition to the ear. Also, 3
Is a second light emitting means for emitting light to irradiate the ear, which is a site where the oxygen partial pressure of the blood vessel is low, and 4 is a second light receiving means for receiving light emitted by the second light emitting means 3 and transmitted through the inner ear. It is a light receiving means. The second light emitting means 3 and the second light receiving means 4
It is arranged in the second probe 13 into which the ear is inserted. In this embodiment, the first light receiving means 2 and the second light receiving means 4
Means that the light of the first light emitting means 1 or the light of the second light emitting means 3 transmitted through the finger or the ear is received, but the first light emitting means 1 reflected by the finger or the ear is received. There is no problem even if the light of the second light emitting means 3 is received.

The first light receiving means 2 and the second light receiving means 4
Are transmitted to the control means 11. Control means 1
1 is a first arithmetic unit 5 for calculating the blood oxygen concentration from the signal of the first light receiving element 2, and a second arithmetic unit 6 for calculating the blood oxygen concentration from the signal of the second light receiving element 4. A blood oxygen concentration difference calculating means 7 for obtaining a difference in blood oxygen concentration obtained by the first and second arithmetic devices, and a storage means for storing the relationship between the blood oxygen concentration difference and diabetes. And a determination means 9 for comparing the value obtained by the blood oxygen concentration difference calculation means 7 with the value stored in the storage means 8 to determine whether or not the patient has diabetes. The control means 11 includes
A display means 10 for displaying the result of the judgment by the judgment means 9 is connected.

The operation of the embodiment will be described below. In the present embodiment, the storage unit 8 stores the relationship between the blood oxygen concentration and the oxygen partial pressure of the blood vessel as a program as shown in FIG. This relationship is based on experiments performed by the inventors. In FIG. 2, the horizontal axis represents the oxygen partial pressure of the blood vessel, and the vertical axis represents the blood oxygen concentration. The characteristic shown as A in the figure is for a diabetic patient, and the characteristic shown as B is for a healthy person. In a diabetic patient, the blood oxygen concentration at a fingertip or the like having a high oxygen partial pressure is about 98%, and the blood oxygen concentration at an ear having a low oxygen partial pressure is about 82%. In a healthy person, the blood oxygen concentration at the fingertip is about 97%, and the blood oxygen concentration at the ear is about 75%. That is, the amount of oxygen divergence C, which is the difference between the blood oxygen concentration of the vein and the artery of the diabetic patient, is 16%, and the amount of oxygen divergence D, which is the difference between the blood oxygen concentration of the vein and the artery of the healthy subject, is 22%. Has become. The oxygen divergence indicates the amount of oxygen supplied to muscle tissue or the like of a living body. The amount of oxygen divergence in diabetic patients is smaller than that in healthy subjects. FIG. 3 is a characteristic diagram showing the relationship between the difference in blood oxygen concentration obtained by experiments by the inventors and diabetes. In other words, the vertical axis indicates the difference in blood oxygen concentration in%, and the horizontal axis indicates the criterion. That is, the judging means 9 of the present embodiment is a healthy person if the difference in blood oxygen concentration is 20% or more, a diabetic reserve if 20% to 18%, and a diabetic if 18% or less. I judge. The control means 11 causes the display means 10 to display the result of the judgment by the judgment means 9. The user
By looking at the display on the display means 10, it is possible to confirm whether oneself has diabetes.

As described above, according to the present embodiment, the first light emitting means 1 disposed at a portion of a blood vessel having a high oxygen partial pressure and the second light emitting means 3 disposed at a portion of a blood vessel having a low oxygen partial pressure. When,
The first light receiving means 2 receives the transmitted light transmitted through the human body or the reflected light reflected by the human body out of the light emitted by the first light emitting means 1, and the human body out of the light emitted by the second light emitting means 3 A second light receiving means 4 for receiving the transmitted light transmitted through or the reflected light reflected on the human body, and diagnosing whether or not the patient is diabetic based on signals from the first light receiving means 2 and the second light receiving means 4; Control means 11 for displaying a diagnosis result on display means 10
The present invention realizes a diabetes diagnostic device that does not require blood collection and can perform an accurate diagnosis.

In addition, a finger is selected as a part of the blood vessel where the oxygen partial pressure is high, and an ear is selected as a part of the blood vessel where the oxygen partial pressure is low, so that the measurement can be easily performed and the measurement accuracy is high. Is realized.

The first light emitting means 1 and the second light emitting means 3 used in the present embodiment have a wavelength of 680 nm and a wavelength of 8 nm, respectively.
When light of two wavelengths of 30 nm is emitted, a semiconductor laser can be used for the first light emitting means 1 and the second light emitting means 3, and a miniaturized diabetes diagnostic device can be realized. .

At this time, if the user uses the diabetes diagnosing device of the present embodiment in a state of fasting from the previous night, measurement can be performed in a state where the blood oxygen concentration is stable. It is possible to perform stable measurement.

[0016]

According to the first aspect of the present invention, there is provided a first light emitting means disposed at a portion of a blood vessel having a high oxygen partial pressure, a second light emitting means provided at a portion of the blood vessel having a low oxygen partial pressure, The first light receiving means for receiving the transmitted light transmitted through the human body or the reflected light reflected on the human body out of the light emitted by the first light emitting means, and the light transmitted by the second light emitting means which has passed through the human body Second to receive transmitted light or reflected light reflected on the human body
Blood sampling as a configuration comprising: a light receiving means, and control means for diagnosing whether or not the patient has diabetes based on signals from the first light receiving means and the second light receiving means, and displaying the diagnosis result on the display means. Instead, the present invention realizes a diabetes diagnostic device that can accurately diagnose whether or not the patient has diabetes.

According to a second aspect of the present invention, a finger is selected as a portion of a blood vessel having a high oxygen partial pressure, and an ear is selected as a portion of a blood vessel having a low oxygen partial pressure.
Further, the present invention realizes a diabetes diagnostic device that can easily measure.

According to a third aspect of the present invention, the first light emitting means and the second light emitting means are 680 nm and 830 nm, respectively.
As a configuration that emits two wavelengths of nm, a miniaturized diabetes diagnostic device that can use a semiconductor laser is realized.

According to a fourth aspect of the present invention, the control means includes:
By displaying a diagnosis result in a state where the fasting state is continued on a display means, it is possible to realize a diabetes diagnostic device capable of performing a highly accurate diagnosis.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a diabetes diagnostic device according to an embodiment of the present invention.

FIG. 2 is a characteristic diagram showing the relationship between blood oxygen concentration and oxygen partial pressure in healthy subjects and diabetic patients.

FIG. 3 is an explanatory diagram showing a criterion of the determination means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st light emitting means 2 1st light receiving means 3 2nd light emitting means 4 2nd light receiving means 5 1st calculating means 6 2nd calculating means 7 blood oxygen concentration difference calculating means 8 storage means 9 judgment means 10 display means 11 control means

Claims (4)

[Claims] 1. A first light emitting means disposed at a portion of a blood vessel having a high oxygen partial pressure, a second light emitting means provided at a portion of a blood vessel having a low oxygen partial pressure, and light irradiated by the first light emitting means. A first light receiving means for receiving transmitted light transmitted through the human body or reflected light reflected by the human body, and a transmitted light transmitted through the human body or a reflected light reflected by the human body among the lights irradiated by the second light emitting means Diabetes comprising: a second light receiving means for receiving light; and a control means for diagnosing whether or not diabetes is present based on signals from the first light receiving means and the second light receiving means, and displaying a diagnosis result on a display means. Diagnostic device. 2. The diabetes diagnostic device according to claim 1, wherein a finger is selected as a portion of the blood vessel having a high oxygen partial pressure, and an ear is selected as a portion of the blood vessel having a low oxygen partial pressure. 3. The first light emitting means and the second light emitting means,
The diabetes diagnostic device according to claim 1, which emits two wavelengths of 680 nm and 830 nm, respectively. 4. The diabetes diagnostic device according to claim 1, wherein the control means displays a diagnosis result in a state where the fasting state is continued on the display means.