JPH0510805Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a blood pressure measuring device, and relates to an apparatus in which a pressurization value setting key and an exhaust key for evacuating a cuff (pressurizing section) are configured as a single key.

<Prior art> An automatic blood pressure monitor equipped with a pressure pump has a setting key for setting the pressure value and an exhaust key for stopping the blood pressure measurement and reducing the applied pressure to zero at any time the measurer desires. is necessary.

In conventional blood pressure monitors, a setting key for setting the pressurization value and an exhaust key for exhausting the air are provided separately and independently, so that the same number of keys as the number of functions are required.

<Purpose of the invention> In view of the above circumstances, the present invention adds the function of an exhaust key to exhaust the pressurized part to the setting key for setting the pressurization value, and the function of the exhaust key for exhausting the pressurized part is changed to the setting key for setting the pressurization value. It detects the pressure of the pressurizing part that pressurizes the area to be measured during operation, and when the pressure value of the pressurizing part is below a predetermined value, it determines that it is in a standby state for blood pressure measurement. On the other hand, when the pressure value of the pressurizing section exceeds a predetermined value, it is determined that the blood pressure measurement should be ended, and when the blood pressure measurement is in standby state, it responds to the instruction of the pressurization value setting/exhaust key. On the other hand, if the pressurization value setting/exhaust key is operated in the pressurized state (the supply means for supplying pressure medium to the pressurizing section is activated), A blood pressure measuring device that activates the exhaust function of the pressurizing part of the measurement area in response to the instruction from the pressurization value setting/exhaust key when the pressure is being applied after pressurization This aims to reduce the number of keys.

<Example> Hereinafter, the configuration of the present invention will be explained with reference to the drawings.

The figure is a block diagram of a blood pressure measuring device according to an embodiment of the present invention.

In the figure, 1 represents a finger which is a part to be measured, and the finger 1 is inserted into a cuff (pressure part) 2.

Blood pressure measurement is performed by supplying air (pressure medium) to the cuff 2 from a pressure pump (supply means) 3 and pressurizing the finger 1 with the cuff 2. That is, a change in blood flow caused by pressurization of the finger 1 is detected by a photoelectric element (not shown), and the systolic blood pressure, diastolic blood pressure, or average blood pressure is measured. These are known as photoplethysmography.

The pressure applied by the cuff 2 is set in advance using a setting key 4.

That is, the setting key 4 is connected to an AND circuit 5, and the oscillation output of the clock oscillator 6 is input to the AND circuit 5. Therefore, while operating (pressing) the setting key 4, the AND
Circuit 5 becomes conductive.

The output terminal of the AND circuit 5 is connected to a counter 7, and the count value of the counter 7 increases sequentially depending on the pressing time of the setting key 4. Note that the counter is cleared when the power is turned on.

In the figure, reference numeral 8 denotes a central processing unit CPU, which receives the operation signal of the setting key 4 and obtains the count output of the counter 7.

When the setting key 4 is operated, the CPU 8 is in a measurement standby state or the pressurizing pump 3
is driven and is in a pressurized state, or is in a pressure application state after the pressurizing pump 3 has finished supplying pressure.

That is, the pressure of the cuff 2 is detected by the pressure sensor 9, and the detected pressure value is sent to the CPU 8 after being A/D (analog-digital) converted (not shown). The CPU 8 receives a pressure value 15 (mm) stored in the memory 10 as a predetermined pressure value that enables the next blood pressure measurement.
Hg) and the pressure value of the cuff 2 sent from the pressure sensor 9, and if the pressure value of the cuff 2 is ≦15 (mmHg), the pressurization value setting process is executed. On the other hand, if the pressure value of cuff 2 is > 15 (mmHg), the exhaust valve 1 attached to the cuff 2
1 is fully opened, and the air inside the cuff 2 is rapidly exhausted. As a result, the pressure in the cuff 2 becomes zero.

Note that the memory 10 stores a program for performing blood pressure measurement processing, and is also provided with an area for storing measured blood pressure information. Further, a correspondence table between the count value of the counter 7 and the corresponding pressurization setting value is also stored.

Furthermore, 12 is a display that displays the set pressure value,
and displays the measured blood pressure information.

To measure blood pressure: (a) Setting the pressurization value. The pressurization value is determined in accordance with the count value of the counter 7.

(b) The pressure in the cuff 2 is increased by driving the pressure pump 3 to the set pressure value.

(c) Stop driving the pressurization pump when the set pressurization value is reached.

(d) Under the control of the CPU 8, the exhaust valve 11
The cuff 2 is left in a half-open state, and air is gradually leaked from the cuff 2. During this pressure reduction process, the pressure value when the photoplethysmogram signal first appears is the systolic blood pressure, the pressure value when the photoplethysmogram signal reaches its maximum amplitude is the mean blood pressure, and the amplitude of the photoplethysmogram signal is small. The lowest blood pressure is reached when this condition continues.

(E) At the point when the blood pressure measurement is obtained, in response to the operator operating the setting key 4, the control unit 8
The exhaust valve 11 is fully opened to perform rapid exhaust. This completes blood pressure measurement.

Incidentally, when the setting key 4 is operated and the pressure value of the cuff 2 exceeds 15 (mmHg), the driving of the pressurizing pump 3 is stopped.

Further, in the above embodiment, one exhaust valve 11 is used for gradual exhaustion and rapid exhaustion, but it is also possible to provide separate exhaust valves for each, opening one exhaust valve and closing the other exhaust valve. It is.

Furthermore, the pressure medium is not limited to air.

Furthermore, the value used to determine whether or not the device is in the measurement standby state is not limited to 15 (mmHg).

<Effects> As described above, according to the present invention, the first storage means stores the set pressurization value, and the application of the part to be measured reaches the pressurization value stored in the first storage means. a supply means for supplying a pressure medium to the pressure section; a second storage means for storing a predetermined value that is a predetermined pressure value; an exhaust means for discharging the pressure medium from the pressurization section; and a pressure detecting means for detecting the pressure of the pressurizing part, the pressure value of the pressurizing part detected by the pressure detecting means is determined in a depressurization process after blood pressure measurement is completed.
When the value is below a predetermined value that enables the next blood pressure measurement, the key input means functions as a pressurization value setting key, and when the detected pressure value of the pressurization part exceeds the predetermined value, the key input means functions as a pressurization value setting key. Since the key input means has a control means that performs control to function as an exhaust key, the pressurization value setting key and the exhaust key can be made into a single key, and the pressurization value setting function and the exhaust function can be combined into the single key. It can be operated by operating the key, which is advantageous in terms of cost, and
Since the number of keys to be handled is reduced, it is easier to remember the operation method.

[Brief explanation of the drawing]

The figure is a block diagram of a blood pressure measuring device according to an embodiment of the present invention. 1...Finger, 2...Cuff, 3...Pressure pump, 4
...Setting key, 5...AND circuit, 6...Clock oscillator, 7...Counter, 8...CPU, 9
...Pressure sensor, 10...Memory, 11...
Exhaust valve, 12...indicator.

Claims (1)

[Claims for Utility Model Registration] A first storage means for storing a set pressurization value, and a pressure medium is applied to the pressurization part of the part to be measured until the pressurization value stored in the first storage means is reached. a second storage means for storing a predetermined value which is a predetermined pressure value; an exhaust means for exhausting the pressure medium of the pressurizing section; a key input means; In a blood pressure measuring device comprising a pressure detection means for detecting pressure in a pressure section, the pressure value of the pressurization section detected by the pressure detection means enables the next blood pressure measurement in a pressure reduction process after blood pressure measurement is completed. When the pressure value of the pressurized part is less than or equal to a predetermined value, the key input means functions as a pressurization value setting key, and when the detected pressure value of the pressurized part exceeds the predetermined value, the key input means functions as an exhaust key. A blood pressure measuring device characterized in that it has a control means for controlling the blood pressure.