JPH0523310A - Electronic hemomanometer - Google Patents

Abstract

PURPOSE:To enable the maintaining a pressure in a pressure cuff and bag at a fixed level with the closing of a fine speed exhaust valve along with easier connection of a reference device by providing a external reference device connecting section for detecting pressures at a proper point of an air element communicating with the pressure cuff and bag while a fine exhaust valve closing means is provided to close a fine speed exhaust valve for reducing a cuff and bag pressure. CONSTITUTION:When a machine difference checking is executed, a reference device 14 is connected to a plug 13 for connecting the reference device while a pressure cuff and bag 1 is connected to a plug 12 for measurement. Under such a condition, when a machine difference switch 10 is depressed, a CPU9 selects a machine difference checking mode. In short, with a switching over to the machine difference checking mode, the CPU9 closes a solenoid valve 61 of a fine speed exhaust valve 6 and with the closing of the fine speed exhaust valve 6 is closed while a quick exhaust valve 5 is closed simultaneously. Thereafter, a pressure pump 4 is driven. Thus, pressures of the pressure cuff and bag and the reference device 14 are transmitted to detect the pressure of the pressure cuff and bag with a pressure sensor 3 while the pressure is detected on the side of the reference device 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic sphygmomanometer in which a pressure detection reference device can be easily attached and the pressure difference between the sphygmomanometer and the reference device can be easily confirmed.

[0002]

2. Description of the Related Art The present electronic blood pressure monitor is not equipped with a device for comparing the pressure difference with a pressure detecting reference device and confirming the pressure performance of the blood pressure monitor. For this reason, conventionally, in order to check the instrumental difference of the electronic blood pressure monitor, a special T-shaped tube is used to connect a reference device (column of mercury, etc.) to the blood tube where the blood pressure monitor body and the cuff are connected. The pressure difference of the gauge is checked.

[0003]

In the above-mentioned instrumental tics of the electronic blood pressure monitor, since a special T-shaped tube is required,
It is difficult to check the instrumental error easily. Further, the slow exhaust valve of the electronic sphygmomanometer is usually just an opening hole, so that the pressure inside the cuff can be maintained at a constant pressure even during pressurization of the cuff and at the time of completion of pressurization to a constant pressure. Can not. For this reason, there is a problem in that it is necessary to constantly compare the display of the sphygmomanometer and the display of the reference device during pressurization in order to check the instrument difference.

According to the present invention, the electronic sphygmomanometer that solves the above problems, can easily connect the reference device, and can close the cuff pressure at a constant pressure by closing the slow exhaust valve when checking the device difference. The purpose is to provide.

[0005]

In order to achieve this object, the electronic sphygmomanometer of the present invention has the following configuration. The electronic sphygmomanometer includes a cuff, a pressurizing means for pressurizing the cuff, a pressure detecting means for detecting a fluid pressure in the cuff, a blood vessel information detecting means for detecting blood vessel information during a pressurizing or depressurizing process, and the blood vessel. A blood pressure determining means for determining a blood pressure value based on the output signal of the information detecting means and the output signal of the pressure detecting means, wherein an external reference device connecting portion for pressure detection is provided at an appropriate position of the air system communicating with the cuff. And a fine speed exhaust valve closing means for closing the fine speed exhaust valve for cuff pressure reduction when the reference device is connected and the device difference check switch is pressed.

In the electronic blood pressure monitor having such a structure,
The air system is provided with two connecting terminal portions each having a closing mechanism. One is a measuring plug that is connected to the cuff, and the other is an external reference device connecting plug.
Both of these plugs can be connected and disconnected from the air system by a spring. For example, when the reference device is connected to the reference device connection plug and the cuff is connected to the measurement plug, the cuff and the reference device communicate with the air system. In this state, if the instrument difference check switch is turned on, the fine speed exhaust valve (simple opening hole)
Electromagnetic valve closes the slow exhaust valve. Then, when the pressurizing pump is driven, the pressure is transmitted to the cuff and the reference device, the pressure of the cuff is detected by the pressure sensor and displayed on the sphygmomanometer, and the detected pressure is also displayed on the reference device side. Since the slow exhaust valve is closed, the cuff pressure does not drop even when the target pressure set in advance is increased and the pump is stopped, and the cuff pressure at the time of stop is maintained. Therefore, the instrumental difference can be confirmed by comparing the display pressures of the two indicators. When the standard device is removed from the standard device connecting plug, the standard device connecting plug is shut off from the air system by a spring and is naturally closed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 is a circuit configuration block diagram showing a specific embodiment of the electronic sphygmomanometer according to the present invention.

The electronic blood pressure monitor has a cuff 1 and an air tube 2.
The pressure sensor 3 communicates with the cuff 1 via the pressure pump 3, the pressurizing pump 4, the rapid exhaust valve 5 and the slow exhaust valve 6, and the pressure sensor 3 includes a CPU via an amplifier 7 and an A / D converter 8.
(Central processing unit) 9 is connected. Further, a device difference check switch 10 and a display device 11 are connected to the CPU 9. Fine speed exhaust valve 6
Is a mere opening hole, and an electromagnetic valve 61 for opening and closing the opening hole is additionally provided.
Controlled by 9. That is, the CPU 9 selects the blood pressure measurement mode when the measurement switch is turned on, and selects the instrument difference check mode when the instrument difference check switch 10 is turned on. Further, when the instrument difference check switch 10 is turned on, the slow exhaust valve (electromagnetic valve 61) 6 and the quick exhaust valve 5
Close. In addition, the CPU 9 displays the pressure value detected by the pressure sensor 3 on the display unit 11, determines the blood pressure value (maximum blood pressure value and minimum blood pressure value) based on the cuff pressure data and the blood vessel information, and displays it on the display unit 11. It has the function of

FIG. 2 is a cross-sectional view of essential parts showing two connecting terminal portions provided in the air system (air tube 2). The two connecting terminal portions each have a closing function. One is a measurement plug 12 connected to the cuff 1, and the other is an external reference device connection plug 13. Both plugs 12,
13 are fitted and arranged in the branch pipe portions 21 and 22 of the air tube 2, respectively. Both plugs 12 and 13 are moved upward (branch pipe portion 2) by springs 12a and 13a, respectively.
It is urged toward the openings 1 and 22). In the state in which the plugs 12 and 13 are biased upward, the plugs 12 and 13 are disconnected from the air tube (air system) 2, respectively. The state in which the cuff 1 is connected to the measuring plug 12, that is, the spring 12a
The measurement plug 12 descends in a compressed state, and the measurement plug 12 and the air tube 2 communicate with each other. Similarly, with the reference device 14 connected to the reference device connection plug 13, that is, with the spring 13a compressed, the reference device connection plug 1
3 descends, the plug 13 for connecting the reference unit and the air tube 2
Communicate with each other.

FIG. 1 is a flow chart showing the operation of the electronic blood pressure monitor of the embodiment. When the power switch of the sphygmomanometer is turned on and, for example, the measurement switch is turned on, the CPU 9 selects the blood pressure measurement mode [step (hereinafter referred to as ST) 1]. Then, the normal blood pressure measurement is executed (ST
2). In this case, the reference device 14 is attached to the reference device connection plug 13.
Is not connected, and the reference device connecting plug 13 is a spring 1
It rises due to the urging force of 3a and is not in communication with the air tube 2. Therefore, the pressure is sent only to the cuff 1 by driving the pressurizing pump 4. After the cuff 1 is inflated to a predetermined pressure, the blood pressure value is determined, for example, in the depressurization process, and the measurement is completed (ST
3).

On the other hand, when the operator performs the instrument difference check, the operator attaches the reference instrument 14 to the reference instrument connection plug 13 and the cuff 1 to the measurement plug 12. This allows
Both plugs 12 and 13 communicate with the air tube 2. When the operator presses the instrument difference check switch 10 in this state, the CPU 9 selects the instrument difference check mode. That is, the CPU 9 closes the electromagnetic valve 61 of the fine speed exhaust valve (simple opening) 6 to close the fine speed exhaust valve 6 and simultaneously closes the quick exhaust valve 5 at the same time as switching to the instrument difference check mode (ST1). (ST4). After that, the pressure pump 4 is driven (ST5). As a result, the pressure is transmitted to the cuff 1 and the reference device 14, and the pressure of the cuff 1 is detected by the pressure sensor 3
And the pressure is also detected on the side of the reference device 14 (ST6). In ST7, it is determined whether the pressurization has reached the target value. Pressurization is, for example, 50 mmHg in advance
If it has been set to 50 mmHg, and the determination in ST7 is YES, the drive of the pressure pump 4 is stopped (ST8). Since the slow exhaust valve (quick exhaust valve 5) 6 is completely closed, the cuff pressure does not drop even when the pump 4 is stopped and the pump 4 is stopped, and the cuff pressure at the time of stop is maintained. Is held. Therefore, the instrumental difference can be confirmed by comparing the display pressures of the two indicators. When the operator confirms this instrumental error, by turning off the power (ST9), the slow exhaust valve (electromagnetic valve 61) 6 and the rapid exhaust valve 5 are opened (ST10), and the air system is returned to the natural atmospheric pressure state. And finish.

[0012]

As described above, according to the present invention, an external reference device connecting portion for pressure detection is provided at an appropriate position of the air system communicating with the cuff, and the reference device is connected and the device difference check switch is pressed. At this time, since a means for closing the fine speed exhaust valve for closing the cuff pressure reducing fine speed exhaust valve is provided, an external reference device can be easily connected, and the fine speed exhaust valve is closed at the time of instrumental error and the pressure in the cuff is reduced. Can be maintained at a constant pressure, and the instrumental error check can be easily performed.

[Brief description of drawings]

FIG. 1 is a flowchart showing a processing operation of an electronic blood pressure monitor according to an embodiment.

FIG. 2 is a cross-sectional view of essential parts showing two connection terminal portions of the electronic blood pressure monitor of the embodiment.

FIG. 3 is a block diagram showing a circuit configuration example of an example electronic blood pressure monitor.

[Explanation of symbols]

 1 Cuff 2 Air tube 6 Slow exhaust valve 9 CPU 10 Instrument error check switch 12 Measurement plug 13 Standard instrument connection plug 14 Standard instrument

Claims (1)

Claims: 1. A cuff, a pressurizing means for pressurizing the cuff, a pressure detecting means for detecting a fluid pressure in the cuff, and blood vessel information for detecting blood vessel information in a pressurizing or depressurizing process. In an electronic sphygmomanometer comprising a detecting means and a blood pressure determining means for determining a blood pressure value based on the output signal of the blood vessel information detecting means and the output signal of the pressure detecting means, a pressure is applied to an appropriate position of an air system communicating with the cuff. An external detection standard connection unit for detection is provided, and a fine speed exhaust valve closing means for closing the fine speed exhaust valve for cuff pressure reduction is provided when the standard device is connected and the instrument difference check switch is pressed. And an electronic blood pressure monitor.