JP2001000403A - Structure of blood pressure gauge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable correct measurement of blood pressure having optimal rate of slow leakage independent of the thickness of an arm band adjusted to the arm, by arrangement of a plurality of slow leakage valves in the apparatus, corresponding to the capacity of the air bag of the arm band. SOLUTION: A blood pressure gauge is provided with a plurality of slow leakage valves. They are adjusted to the optimal slow leaking rate (ca.2-5 mmHg/sec) which corresponds to the air bag capacity of an ordinary sized arm band 1. An auxiliary slow leakage valve 12 together with the slow leakage valve 4, or in other words by cooperation of the auxiliary slow leakage valve 12 and the slow leakage valve 4, is adjusted to the optimal slow leaking rate corresponding to the air bag capacity of a bigger arm band 11. When a bigger arm band 11 is used, the slow leakage valve 4 and the auxiliary slow leakage valve 12 operate simultaneously, and when an ordinary sized arm band 11 is used, only the slow leakage valve 4 operates. Thus, it permits accurate measurement of the blood pressure independent of the thickness of the arm band.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sphygmomanometer having a plurality of slow leak valves, and more particularly to a sphygmomanometer capable of performing a slow leak (slow exhaust) corresponding to the internal air chamber volume of arm bands having different sizes.

[0002]

2. Description of the Related Art A sphygmomanometer has a structure in which a cuff (a rubber air bag is covered with a less extensible cloth) having a function of converting a pulse wave from a measurement main body and an upper arm into a pressure fluctuation of air. )
And a tube and an air plug that connect an air path that connects the main body and the arm band pneumatically. In the past, sphygmomanometers generally used a single type of cuff that was adapted to the average arm thickness of adults, but recently sphygmomanometers have become widely used, It is used by many people with different thicknesses.

[0003] It is known that if the width of the arm band (width of the air bag) is too small compared to the diameter of the upper arm, the blood pressure value tends to be measured high, whereas if the width of the arm band is too large, the blood pressure value tends to be low. Have been. It is also known that the length of the arm band (the length of the air bag) needs to have a length that covers at least 2/3 of the circumference of the upper arm. Therefore, it is necessary for blood pressure monitors to match the size of the arm band (air chamber volume created by the width and length of the air bag) according to the thickness of the arm, so that accurate blood pressure measurement can be performed. It becomes possible. That is, in order to perform accurate measurement, arm bands having different sizes according to the user have come to be used. Especially in foreign countries, there are many people with thick arms, so large arm bands are used.

[0004] By the way, the cuffs having different sizes include a "normal size" which can be applied to a person having an upper arm circumference of about 22 to 32 cm as used by a Japanese adult, and an arm band such as Americans and Germans. In general, it is used by dividing it into a “large size” that can be applied to about 32 to 42 cm thick.

A sphygmomanometer generally used conventionally will be described below with reference to the drawings. First, the configuration will be described with reference to FIG. 4A and 4B are configuration diagrams of a sphygmomanometer using a normal-sized arm band, wherein FIG. 4A is a perspective view showing an entire configuration, and FIG. 4B is a plan view showing an internal configuration of a main body. 1 is a normal size arm band, a tube 1a provided on the arm band, and 2 air plugs are detachably connected to the arm band and the main body. Reference numeral 3 denotes a sphygmomanometer main body, which has a display unit 3a and a switch group 3b.

Reference numeral 4 denotes a slow leak valve that exhausts at a very low speed during measurement, 5 denotes a pressurizing pump that sends air to an air chamber in the arm band, 6
Is a pressure sensor for picking up a pulse wave, and 8 is an electromagnetic valve for forcibly exhausting gas at the end of measurement. Each component in the main body is connected to the air plug 2 via the tube 3c, the joint 3d, and the air connector 7, respectively.

Next, the measurement operation of the sphygmomanometer using a normal-size arm band will be described. The normal arm band 1 is wound around the upper arm or the like of the subject, and the switch group 3b is operated to send air from the pressurizing pump 5 to the air chamber in the arm band. The artery is compressed by pressurizing the blood pressure higher than the high blood pressure by 20 to 30 mmHg, and the air pressure of the air chamber in the cuff is blocked by the slow leak valve 4 provided on the sphygmomanometer main body 3 after the ischemia. (about sec), and the pressure is gradually and gradually reduced.

[0008] The pulse wave generated from the blood vessel in the pressure reduction process is detected by the pressure sensor 6 and subjected to electrical processing, whereby the maximum and minimum blood pressure values are measured and displayed on the display unit 3a.
At the end of the measurement, in order to reduce the physical burden on the person to be measured, forced exhaust is performed by the solenoid valve 9 so that the air pressure in the air chamber in the arm band becomes zero.

[0009]

As described above in blood pressure measurement, it is known that accurate measurement cannot be performed unless the size of the arm band and the thickness of the arm match. For this reason, the subject selects an arm band that matches the thickness of the arm and connects to the main body of the sphygmomanometer to perform measurement.

By the way, when measuring the blood pressure, correct measurement cannot be performed unless the slow leak (slow speed exhaustion) of the air chamber in the arm band is linearly reduced at a constant speed. Therefore, the slow leak valve is adjusted to an exhaust amount corresponding to the volume of the air chamber in the arm band, and is set to an optimum slow leak speed (about 2 to 5 mmHg / sec). Slow leak is performed by a slow leak valve.Slow leak valve includes a rubber-made one-side closed cylinder, and a slit is cut in the cylinder wall. By adjusting the opening of the slit, The exhaust volume changes, and it can be adjusted to the optimal slow leak speed by adjusting to the exhaust volume corresponding to the volume of the air chamber in the arm band (for example, in the case of a large arm band, adjust to increase the exhaust volume) .

For this reason, when one type of arm band is used for the main body of the sphygmomanometer, a certain amount of slow leak (slow speed exhaust) is required in advance.
There is no problem if it is adjusted to the amount, but when using two or more types of arm bands, the optimal slow leak must be adjusted according to the amount of slow leak according to the air chamber volume in each arm band. Speed (about 2 to 5 mmHg / sec) does not occur.

However, since the adjustment range of the slow leak valve is generally not very wide, it is difficult to adjust the slow leak amount corresponding to two or more types of arm bands with one slow leak valve. It is impossible for the measurer to adjust the slow leak rate. Therefore, the measurement is performed at a non-optimal slow leak rate, and a correct blood pressure value cannot be measured.

An object of the present invention is to provide a sphygmomanometer capable of solving the above-mentioned drawbacks and enabling many people to measure a correct blood pressure value.

[0014]

In order to achieve the above object, the present invention provides an arm band, a main body having a pressurizing pump, a slow leak valve, and a pressure sensor, and an air flow path between the main body and the arm band. A blood pressure monitor for measuring a blood pressure value by measuring a blood pressure value by detecting a pulse wave from a change in air pressure of the air chamber in the arm band while the air pressure in the air chamber in the arm band is provided by a slow leak valve. A sphygmomanometer structure characterized in that a plurality of slow leak valves are provided in an air path inside an air plug insertion port of a main body of the meter.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1, 2 and 3 are a plan view and a partial view showing the internal configuration of a sphygmomanometer according to each embodiment of the present invention.

First, the configuration of the first embodiment of the present invention will be described with reference to FIG. FIG. 1A shows a large-sized arm band 1
1 is a plan view showing a configuration of a sphygmomanometer applicable to 1.
(B) is a partial view showing an example of a case where a normal size arm band 1 is applied. The blood pressure monitor main body 3 is provided with the slow leak valve 4 via the air connector 7 of the air plug insertion port, the tube 3c, and the joint 3d in the same manner as in the related art, but is further provided with a joint in the same air path. An auxiliary slow leak valve 12 is mounted via 3d.

Next, the operation of FIG. 1A will be described. The slow leak valve 4 is adjusted to an optimum slow leak speed (about 2 to 5 mmHg / sec) by adjusting the amount of slow leak corresponding to the volume of the air chamber of the arm band 1 of a normal size. Further, the auxiliary slow leak valve 12 is
In the state where the slow leak amount is added, that is, in the state where the auxiliary slow leak valve 12 and the slow leak valve 4 are simultaneously operated, the slow leak amount is adjusted to the slow leak amount corresponding to the air chamber volume of the large-sized arm band 11, and the optimum slow leak speed is adjusted. (2-5mmHg
/ Sec).

When the large-sized arm band 11 is used, the slow leak of the slow-leak valve 4 and the slow leak of the auxiliary slow-leak valve 12 are simultaneously operated and synthesized, and the above-described operation according to the air chamber volume of the large-sized arm band 11 is performed. , The optimal slow leak rate (2-5 mmHg)
/ Sec) and accurate blood pressure measurement can be performed. Since the same auxiliary leak leak valve 12 as the slow leak valve 4 can be used, only the adjustment needs to be changed.

Next, when the normal-sized arm band 1 is used, only the slow leak valve 4 works and the auxiliary slow leak valve 1
If the 2 does not work, an optimum slow leak speed corresponding to a normal size arm band can be obtained. For example, FIG.
As shown in (2), the auxiliary slow leak valve 12 is removed, and an air stopper 13 is attached so that air does not leak. The case of the first embodiment is mainly applied when the manufacturer ships.

Next, the configuration of the second embodiment of the present invention will be described with reference to FIG. FIG. 2A is a configuration diagram of a sphygmomanometer in which a plurality of air plug insertion ports are provided for each size of the arm band, which can be selected by the consumer according to the size of the arm band. (B)
Is the air plug 2 when using the normal size armband 1
FIG. 6 is a partial view showing a connection state between
(C) is a partial view showing a connection state between the air plug 2 and the stopper 22 when a large-sized arm band 11 is used.

The blood pressure monitor main body 3 is provided with the slow leak valve 4 via the air connector 7 of the air plug insertion port, the tube 3c and the joint 3d as in the conventional case. Further, an air connector 21 is provided at the additional air plug insertion port, and an auxiliary slow leak valve 12 is attached to the same air path via the air connector 21. An air stopper 22 is attached to the air plug insertion port to which the air plug 2 is not inserted in order to prevent air from leaking.

Next, the operation of FIG. 2A will be described. Adjustment of the slow leak speed by the slow leak valve 4 and the auxiliary slow leak valve 12 is performed in the same manner as in the first embodiment, and the slow leak valve 4 is adjusted to a slow leak amount corresponding to the volume of the air chamber of the arm band 1 of a normal size. The auxiliary slow leak valve 12 is adjusted to the optimum slow leak speed (about 2 to 5 mmHg / sec), and the auxiliary slow leak valve 12 is added with the slow leak amount of the slow leak valve 4, that is, the auxiliary slow leak valve 12 and the slow leak valve 4 Are operated at the same time, the amount of slow leak is adjusted to correspond to the volume of the air chamber of the large-sized arm band 11, and adjusted to the optimum slow leak speed (about 2 to 5 mmHg / sec).

When a normal size arm band 1 is used, as shown in FIG. 2 (B), the arm band 1 is attached to the air plug insertion hole provided in the air connector 21 on the main body side. The air plug 2 is inserted, and the air plug insertion port provided on the air connector 7 on the main body side is plugged with the air stopper 22. In this case, the air path of the auxiliary slow leak valve 12 is shut off by the air plug 2 in the air connector 21 and the auxiliary slow leak valve 1
2 will not work. Therefore, when the arm band 1 of a normal size is used, only the slow leak valve 4 operates, and the blood pressure can be measured at an optimum slow leak speed.

When a large-sized arm band 11 is used, as shown in FIG. 2C, the large-sized arm band 11 is attached to an air plug insertion hole provided in the air connector 7 on the main body side. The air plug 2 is inserted, and the air plug insertion port of the air connector 21 on the main body side is plugged with the air stopper 22. in this case,
The air path of the auxiliary slow leak valve 12 is not blocked by the air stopper 22 in the air connector 21, and both the slow leak valve 4 and the auxiliary slow leak valve 12 operate simultaneously. Therefore, when using the arm band 11 of a large size, the slow leak valve 4 and the auxiliary slow leak valve 12 work at the same time, and the blood pressure can be measured at the optimum slow leak speed.

Next, the configuration of a third embodiment of the present invention will be described with reference to FIG. FIG. 3A is a configuration diagram of a sphygmomanometer in which the length of the air plug is changed according to the size of the arm band, which can be selected by the consumer according to the size of the arm band. (B) is an air connector 21 when a normal-size armband 1 is used.
FIG. 7C is a partial view showing an inserted state of the air plug 23 into the air connector 21 when the large-sized arm band 11 is used.

The length of the normal size arm band side air plug 23 and the size of the large size arm band side air plug 24 are different, and the air plug 23 is longer than the air plug 24. The blood pressure monitor main body 3 is provided with the slow leak valve 4 via the air connector 7 of the air plug insertion port, the tube 3c, and the joint 3d as in the conventional case, but is further provided with the air through the same air path. Auxiliary slow leak valve 12 via air connector 21 at plug insertion port
Is attached.

Next, the operation of FIG. 3A will be described. Adjustment of the slow leak speed by the slow leak valve 4 and the auxiliary slow leak valve 12 is performed in the same manner as in the first embodiment, and the slow leak valve 4 is adjusted to a slow leak amount corresponding to the volume of the air chamber of the arm band 1 of a normal size. The auxiliary slow leak valve 12 is adjusted to the optimum slow leak speed (about 2 to 5 mmHg / sec), and the auxiliary slow leak valve 12 is added with the slow leak amount of the slow leak valve 4, that is, the auxiliary slow leak valve 12 and the slow leak valve 4 Are operated at the same time, the amount of slow leak is adjusted to correspond to the volume of the air chamber of the large-sized arm band 11, and adjusted to the optimum slow leak speed (about 2 to 5 mmHg / sec).

As shown in FIG. 3B, a long air plug 23 is attached to the arm band 1 of the normal size, and when the air plug 23 is inserted into the insertion port of the air connector 21 on the main body side, an auxiliary member is provided. The air path of the slow leak valve 12 is shut off by the air plug 23, and the auxiliary slow leak valve 12 does not operate. Therefore, when the normal-sized arm band 1 is used, only the slow leak valve 4 operates, and the blood pressure can be measured at an optimum slow leak speed.

As shown in FIG. 3 (C), a short air plug 24 is attached to the large-sized arm band 11, and when the air plug 24 is inserted into the insertion port of the air connector 21 on the main body side, an auxiliary member is provided. The air path of the slow leak valve 12 is not blocked by the air plug 24 and the slow leak valve 4
And the auxiliary slow leak valve 12 work simultaneously. Therefore, when using the arm band 11 of a large size, the slow leak valve 4 and the auxiliary slow leak valve 12 work simultaneously,
Blood pressure can be measured at the optimum slow leak rate.

[0030]

As described above, by arranging a plurality of slow leak valves in the main body so as to correspond to the air chamber volume of the arm band, the optimum slow leak speed for the arm band air chamber volume is provided. Since the multiple slow leak valves are adjusted inside the main body, the optimum slow leak speed can be obtained even when using different arm bands according to the size of the arm, and the correct blood pressure value can be obtained. Can be measured.

[Brief description of the drawings]

FIG. 1 is a plan view and a partial explanatory view showing an internal configuration of a sphygmomanometer according to a first embodiment of the present invention.

FIG. 2 is a plan view and a partial explanatory view showing an internal configuration of a sphygmomanometer according to a second embodiment of the present invention.

FIG. 3 is a plan view and a partial explanatory view showing an internal configuration of a sphygmomanometer according to a third embodiment of the present invention.

FIG. 4 is a perspective view showing an overall configuration of a conventional blood pressure monitor and a plan view showing an internal configuration thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Normal size arm band 2 Air plug 3 Sphygmomanometer main body 4 Slow leak valve 5 Pressure pump 6 Pressure sensor 7 Air connector 8 Solenoid valve 11 Large arm band 12 Auxiliary slow leak valve 13 Air stopper 21 Air connector 22 Air stopper 23 air plug 24 air plug

Claims (3)

[Claims] 1. A cuff, a pressure pump or a slow leak valve,
A main body having a pressure sensor, and an arm plug air plug that connects the main body and the air passage of the arm band, while reducing the air pressure of the air chamber in the arm band with a slow leak valve,
In a sphygmomanometer that measures a blood pressure value by picking up a pulse wave from a change in air pressure in a cuff air chamber, a plurality of slow leak valves are provided in an air path inside an air plug insertion port of a sphygmomanometer main body. Structure of the blood pressure monitor. 2. A slow leak valve that is not used by providing a plurality of insertion ports for the air plug for the arm band on the main body of the sphygmomanometer, inserting the air plug into a predetermined insertion port, and closing the rest with a plug. The structure of the sphygmomanometer according to claim 1, further comprising means for stopping the function of (1). 3. The apparatus according to claim 1, further comprising means for stopping the function of the unused slow leak valve by changing the length of the air plug for the arm band according to the size of the arm band. Structure of the sphygmomanometer described.