JP3475721B2 - Valve and arterial medical information inspection device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve suitable for use in an arterial system medical information inspection apparatus used for obtaining medical information such as blood pressure information and peripheral circulation information.

[0002]

2. Description of the Related Art Conventionally, an arterial medical information such as a blood pressure test device is used to detect an arterial pulse wave by a pressure sensor and obtain medical information such as blood pressure information and peripheral circulation information from the amplitude and waveform of the arterial pulse wave. Inspection devices are known.

This arterial system medical information inspection apparatus generally includes a detection section for detecting an arterial pulse wave, a pressing air bag for pressing the detection section against an artery, and the pressing air bag is filled with air. It is equipped with an air compressor.

And, this arterial system medical information inspection device is
In order to gradually reduce the pressing force applied to the artery when detecting the arterial pulse wave, an exhaust valve for discharging the air in the pressing air bag is provided between the pressing air bag and the air compressor. Has been.

In measuring the arterial pulse wave, the arterial system medical information inspection apparatus constructed as described above is mounted by winding a press air bag around the outer circumference of the arm and mounting the air bag in the press air bag. Fill the air with an air compressor. As a result, in the arterial system medical information inspection apparatus, the pressing air bag presses the artery of the arm to regulate the blood flow and presses the detection unit against the artery. Then, the arterial system medical information inspection apparatus starts the blood flow in the artery by discharging the air filled in the air bag for pressure through the exhaust valve, and detects the arterial pulse wave by the detection unit. .

[0006]

By the way, in the arterial medical information inspection apparatus described above, it is desired to downsize the whole apparatus in consideration of portability and use in homes other than medical institutions. There is.

However, the exhaust valve provided in the arterial medical information inspection apparatus exhausts the air in the pressing air bag at a constant speed when exhausting the air, so that the pressing force applied to the artery is maintained at a constant speed. Therefore, it was difficult to reduce the size because it was necessary to gradually reduce the pressure and because the pressing air bag had a total volume of about 200 cc.

Therefore, an object of the present invention is to provide a valve capable of exhausting at a constant speed and downsizing, and an arterial medical information inspection apparatus using this valve.

[0009]

In order to achieve the above-mentioned object, a valve according to the present invention comprises a pair of an upper valve and a lower valve formed in a cylindrical shape having a bottom, which are combined with each other, and a film-shaped stainless valve. And a board. The upper valve is provided with a first ventilation hole on the bottom surface thereof, and the lower valve is provided with a second ventilation hole on the bottom surface thereof, and is formed by the upper valve and the lower valve combined with each other. A valve seat is formed on the inner periphery of the lower valve in the internal space. The film-shaped valve plate has substantially the same shape as the internal shape of the upper valve and the lower valve combined with each other, and the valve seat inside the upper valve and the lower valve combined with each other. It is provided movably between the bottom surface of the upper valve and when air flows from the first ventilation hole to the second ventilation hole,
When the first vent is opened and air flows from the second vent to the first vent, the first vent is used.
It moves so as to close the hole to change the pressure in the internal space.
Gas from the first vent hole while controlling the exhaust amount accordingly.
Is discharged. Further, the arterial system medical information inspection apparatus according to the present invention comprises a pressing air bag for pressing an artery, an air pump for sending air to the pressing air bag, and a space between the pressing air bag and the air pump. And a valve provided in the. The valve includes a pair of an upper valve and a lower valve formed in a cylindrical shape having a bottom and combined with each other, and a film-shaped stainless valve plate. The upper valve has a bottom surface provided with a first vent hole to which the air pump is connected, and the lower valve has a bottom surface provided with a second vent hole to which the pressing air bag is connected. A valve seat is formed on the inner periphery of the lower valve in the internal space formed by the upper valve and the lower valve combined with each other. The film-shaped valve plate has substantially the same shape as the internal shape of the upper valve and the lower valve combined with each other, and the valve seat inside the upper valve and the lower valve combined with each other. It is provided movably between the bottom part of the upper valve and when the air flows from the air pump to the pressing air bag, the first vent hole is opened to remove the air from the pressing air bag. Blocks the first vent hole when air flows to the air pump.
Discharge in response to pressure changes in the upper Symbol inner space moves to be
Exhaust gas from the first vent hole while controlling the air volume
It

According to the valve having a configuration the valve and the arterial system medical information inspection system as described above, when the second ventilation holes for exhausting air to the first vent, the first
Move so as to close the ventilation hole of No. 1 and press the pressure of the internal space.
The first vent hole while controlling the displacement according to the force change
Gas is exhausted from. This valve exhausts air at a constant speed because the exhaust amount is controlled by the valve body according to the pressure change in the valve.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An arterial system medical information inspection apparatus having an exhaust valve applied to gradually reduce the pressure applied to an artery according to a specific embodiment of the present invention will be described below with reference to the drawings. Explain. As shown in FIG. 1, this arterial system medical information inspection device 1 includes a device body 3 for detecting medical information, and a covering band 4 for supporting the device body 3 and mounting it on the wrist. .

As shown in FIGS. 1, 2 and 3, the apparatus main body 3 includes a detector 6 for detecting an arterial pulse wave as a pressure change.
And a pressing air bag 7 that presses the detection unit 6 against the radial artery L1 and presses the ulnar artery L2, an air pump 8 that sends air to the pressing air bag 7, and these pressing air bags. 7 and an air pump 8 and an exhaust valve 9 for discharging air.

As shown in FIGS. 1, 2 and 3, the apparatus main body 3 includes a case 11 for accommodating an air pump 8 and an exhaust valve 9 therein, and a detection unit provided on the case 11. A display panel 12 for displaying medical information based on the detection value detected by 6, operation buttons 13 and 14 for switching the display contents of the display panel 12, and a set of operation buttons 15a for pushing in the air pump 8. , 15
and b.

As shown in FIGS. 2 and 3, the detector 6 is
The radial artery L1 is disposed at a position facing the radial artery L1.
First and second pressure sensors 21 for detecting pressure changes in
22, a blood flow restricting element 23 that presses the radial artery L1 to regulate the blood flow, and an exhaust valve 9 that is provided to the radial artery L1.
Third pressure sensor 24 for detecting the pressure applied to the
And a pressing plate 25 for pressing the first and second pressure sensors 21, 22 and the blood flow restricting element 23.

The first and second pressure sensors 21, 22 are
For example, it is composed of a piezoelectric-electric conversion element such as a piezoelectric microphone. Then, the first and second pressure sensors 21, 22 and the blood flow restricting element 23 are located at three positions along the artery such as the radial artery L1 extending from the heart side to the peripheral side so as to be located at the pressing plate 25. They are respectively arranged on the top.

That is, the first pressure sensor 21 is located on the heart side, and the second pressure sensor 22 is located in the middle. The blood flow restricting element 23 is located on the peripheral side. The pressing plate 25 is formed in a substantially rectangular plate shape, and is attached to the applying belt 4 and has a substantially U-shaped support member 2
One end of the rotary shaft 6 is rotatably supported by the rotary support shaft 27.

As shown in FIGS. 2, 3 and 4, the pressing air bladder 7 is provided on the surface of the applicator belt 4 on the side facing the wrist, and the pressing plate 25 of the detecting portion 6 is provided. A first air chamber 28 that rotates to press the first and second pressure sensors 21 and 22 and the blood flow restricting element 23 against the radial artery L1 and the ulnar artery L2 to restrict blood flow. And a second air chamber 29 that operates. Further, the pressing air bag 7 has a first air chamber 28 and a second air chamber 29 that are in communication with each other, and an air circulation port 30 that allows air to flow in each of the air chambers 28, 29. ing.

Air is introduced into the pressing air bag 7 through the air circulation port 30, and the first and second air chambers 2 are
The pressure plate 25 of the detection unit 6 and the ulnar artery L2 are pressed by filling the air into the air bags 8 and 29, respectively. The pressing air bag 7 has, for example, a total volume of 15
The size is about 20 cc, and the size is greatly reduced.

As shown in FIG. 4, the air pump 8 has an air circulation port 31a connected to the exhaust valve 9 at one end and an air circulation port through which external air flows at the other end. 31b has been opened. Also, the air circulation port 31a
The check valve 31c is provided in the. The air pump 8 is housed in a case 11, and the case 11
By pushing in the operation buttons 15a and 15b provided on the, the air is sent to the pressing air bag 7 through the exhaust valve 9.

The exhaust valve 9 is a so-called automatic valve, as shown in FIGS. 4 and 5, and is arranged in the case 11. The exhaust valve 9 is movably arranged on an upper valve 32 and a lower valve 33, which are substantially cylindrical with a bottom and are combined with each other, and a valve seat 33a formed on an inner peripheral portion of an opening end of the lower valve 33. And a valve plate 34 having elasticity.

The exhaust valve 9 is formed of, for example, aluminum into a circular film shape, and has an outer diameter of about 9 mm and an inner diameter of about 6.6 mm.
Further, the exhaust valve 9 is provided with, for example, the air circulation port 35,
The hole diameter of 36 is about 1 mm, and the depth of the valve seat 33a is 0.5 m.
It is formed to about m. The valve plate 34 is made of, for example, stainless steel and has an outer diameter of 7.4, for example.
The thickness is about mm and the thickness is about 0.05 mm.
Therefore, when the air is exhausted from the ventilation hole 35, the valve plate 34 is elastically deformed following the bottom surface of the upper valve 32 by the pressure of the circulating air to close the ventilation hole 35. As described above, the exhaust valve 9 is significantly downsized.

The upper valve 32 and the lower valve 33 are provided with ventilation holes 35 and 36 at their bottom surfaces. The exhaust valve 9 is connected to the ventilation hole 35 by inserting the air circulation port 31b of the air pump 8 into the ventilation hole 36.
The air circulation port 30 of the pressing air bag 7 is inserted into and connected to.

Further, as shown in FIG. 5, the upper valve 32 and the lower valve 33 are respectively connected so that air outflow holes 37, 38 for outflowing the air in the exhaust valve 9 to the outside are communicated with each other. The third pressure sensor 24 of the detector 6 is provided so as to close the air outflow holes 37 and 38. This third pressure sensor 24
Is composed of a pressure-electric conversion element made of, for example, a semiconductor, and detects the pressure applied to the artery by detecting the air pressure in the exhaust valve 9.

With respect to the exhaust valve 9 configured as described above, the pressure change with time detected by the third pressure sensor 24 will be described with reference to FIG. As shown in FIG.
The vertical axis represents the air pressure (mmHg) in the exhaust valve 9, and the horizontal axis represents time (seconds). As shown in comparison with the broken line in FIG. 6, the exhaust valve 9 has a pressure that changes linearly with time, and is capable of satisfactorily reducing the pressing force applied to the artery at a constant speed. You can

The applying belt 4 is, as shown in FIGS. 2 and 3,
For example, it is formed in a band shape with a cloth material, and at one end,
A mounting plate 39 is provided for winding and mounting on the wrist. The mounting plate 39 is formed in a substantially rectangular plate shape, and has an insertion slit 39 a for inserting the covering band 4,
39b are respectively opened on the main surface. Mounting plate 39
Has one end of the dressing strip 4 inserted through and supported by one of the insertion slits 39a, and the other insertion slit 39a.
By inserting the other end of the dressing belt 4 into b and folding back this end and locking it on the dressing belt 4, it is possible to detachably attach the dressing belt 4 to the wrist. There is.

Further, the case 11 of the arterial system medical information inspection apparatus 1 is formed to be curved along the outer shape of the wrist as shown in FIGS. As shown in FIGS. 1 and 2, operation buttons 13 and 14 for switching the display of the display panel 12 are provided on parallel side surfaces with the display panel 12 provided on the main surface of the case 11 interposed therebetween. There is. Further, operation buttons 15a and 15b for operating the air pump 8 are provided on parallel side surfaces of the case 11, respectively.

An operation of measuring medical information such as blood pressure from the artery of the wrist in the arterial system medical information inspection apparatus 1 configured as described above will be described. First, the arterial system medical information inspection apparatus 1 sends out air from the air pump 8 by pressing the operation buttons 15a and 15b, and the first and second air bags 7 for pressing are discharged through the exhaust valve 9. Air chamber 2
8 and 29 are filled with air, respectively.

The first air chamber 28 of the pressing air bag 7 is filled with air to rotate the pressing plate 25,
First and second pressure sensors 21, 22, blood flow restriction element 2
3 is pressed against the radial artery L1 through the skin. Also, the second
When the air chamber 29 is filled with air, it presses the ulnar artery L2 through the skin.

In the arterial system medical information inspection apparatus 1, the air filled in the first and second air chambers 28, 29 of the pressing air bag 7 is sent to the air pump 8 side via the exhaust valve 9. By gradually evacuating, the first and second pressure sensors 21, 22 for the radial artery L1 and the blood flow restricting element 2
Each pressing force of 3 is gradually reduced at a constant speed.

In the arterial system medical information inspection apparatus 1, the third pressure sensor 24 detects the pressure at which the blood flow starts due to the increase in the output level of the second pressure sensor 22, and controls this pressure to be constant. . In the arterial system medical information inspection apparatus 1, this state is the measurement state, and the first pressure sensor 21 outputs a predetermined time constant differential signal of the pressure pulse wave (volume pulse wave).

As described above, the exhaust valve 9 according to the present invention has the valve seat 3 formed on one of the upper and lower valves 32 and 33.
By providing the elastic film-like valve plate 34 provided in 3a, the exhaust amount is controlled by the valve plate 34 according to the pressure change in the exhaust valve 9,
The exhaust can be performed at a constant speed, and the size can be reduced.

Further, the arterial medical information inspection apparatus 1 can be downsized by including the exhaust valve 9.

Although the exhaust valve 9 according to the present invention is applied to the arterial system medical information inspection device 1, it is suitable for use in other devices that are required to exhaust at a constant speed.

Next, the circuit configuration of the arterial system medical information inspection apparatus 1 according to the embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 7, the arterial system medical information inspection apparatus 1 includes the above-mentioned first pressure sensor 21, second pressure sensor 22, blood flow restricting element 23, and third pressure sensor 24. It has and.

Further, the arterial medical information inspection device 1 is the first
A first level detection circuit 51 for detecting the level of the pressure sensor 21, and a timer 53, a timer 56, and a timer 60 to which the output of the first level detection circuit 51 is input as a timer start signal; A counter 52, which is supplied with the output of the level detection circuit 51 and supplies a timer stop signal to the timer 53, and a timer 52, which is supplied with the output of the first level detection circuit 51 via a bottom detector 54.
A counter 55 for supplying a timer stop signal to the
The counter 57 is provided with the output of the level detection circuit 51 of FIG. 1 through the differentiating circuit 57 and the bottom detector 58 and supplies a timer stop signal to the timer 60.

Further, the arterial system medical information inspection apparatus 1 is provided with the output of the timer 53 and the output of the timer 60 to calculate the metabolic information and the like, and the arithmetic circuit 62 and the arithmetic circuit 63, and the timer 5.
Switch SW for switching the signal supplied from 3 to the arithmetic circuit 62 or the arithmetic circuit 63, and the timer 56 and the timer 60.
And a divider 65 that outputs the curing degree information and the like.

Further, the arterial medical information inspection device 1 has a second
Second level detection circuit 66 for detecting the level of the pressure sensor 22, the third level detection circuit 67 for detecting the level of the third pressure sensor 24, and the second level detection circuit 6
6 and a pressing control unit 68 that controls the pressing force and the like by the pressing air bladder 7 based on the detection output of the third level detection circuit 67.

The first pressure sensor 21 and the second pressure sensor 22 are composed of, for example, piezoelectric-electric conversion elements such as piezoelectric microphones as described above, and detect arterial pulse waves as pressure changes. The first pressure sensor 21, the second pressure sensor 22, and the blood flow restricting element 23 are shown in FIG.
As shown in (3), air is injected into the pressing air bag 7 provided in the applying band 4 to press the skin and block the radial artery L1 of the examinee's wrist.

The third pressure sensor 24 is composed of a pressure-electricity conversion element made of, for example, a semiconductor as described above, and detects the air pressure in the exhaust valve 9.

The first level detection circuit 51 detects when the pressure detection output of the first pressure sensor 21 exceeds a predetermined level, that is, the time point a when the aortic valve is opened as shown in FIG. 9A, Output pulse A. The pulse A output from the first level detection circuit 51 is the timer 53, the timer 5
6 and the timer 60 are supplied as a timer start signal. Here, the output of the first pressure sensor 21 is as shown in FIG.
As shown in (b), it is output as a predetermined time constant differential signal of the pressure pulse wave (volume pulse wave).

The counter 52 includes the first level detection circuit 5
It outputs a pulse having a different polarity each time it receives the pulse A output from 1 and receives the first pulse from the first level detection circuit 51 (that is, the time point a when the first aortic valve is opened). , A pulse of negative polarity (that is, “0”) is output, and when a next pulse is received from the first level detection circuit 51 (that is, time point b when the aortic valve is opened), a pulse of positive polarity (that is, “1”). )) B is output and a negative pulse (that is, “0”) is output when the next pulse is received from the first level detection circuit 51. The positive pulse B output from the counter 52 is supplied to the timer 53 as a timer stop signal.

The bottom detector 54 is the first pressure sensor 21.
A pulse is output each time each bottom of the predetermined time constant differential signal, which is the output of, is detected. The counter 55 has a bottom detector 54.
When receiving the pulse output from, that is, FIG.
Predetermined time T1 depending on arm compliance shown in (b)
The pulse C having the positive polarity is output at the time point c of the minimum value of the predetermined time constant differential signal that is attenuated by. The positive pulse C output from the counter 55 is supplied to the timer 56 as a timer stop signal.

The timer 53 is the first level detection circuit 51.
Pulse B from counter 52 after receiving pulse A from
The time until the pulse is received, that is, the heartbeat cycle RR of the pressure pulse wave (volume pulse wave) is measured, and the measured value D is output. The timer 56 measures a time from receiving the pulse A from the first level detection circuit 51 to receiving the pulse C from the counter 55, that is, a predetermined time constant T1 having a correlation with compliance, and outputs the measured value E. To do.

The predetermined time constant differential signal which is the pressure detection output of the first pressure sensor 21 is output to the differentiating circuit 57. The differentiating circuit 57 differentiates the predetermined time constant differentiating signal as shown in FIG. Bottom detector 58
Outputs a pulse each time each bottom of the output signal of the differentiating circuit 57 is detected. The counter 59 outputs a positive pulse F when it receives two pulses output from the bottom detector 58. The positive pulse F output from the counter 59 is supplied to the timer 60 as a timer stop signal.

The timer 60 includes the first level detection circuit 51.
Pulse F from counter 59 after receiving pulse A from
The time until the signal is received, that is, the propagation ejection time T1 'is measured, and the measured value G is output as the postload information.

Measurement value D from timer 53 (heartbeat cycle R
R) is supplied to the arithmetic circuit 62 or the arithmetic circuit 63 via the switch SW, and the arithmetic circuit 62, 63 is also supplied with the measured value G (propagation ejection time T1 ′) from the timer 60, and the arithmetic operation is performed. The circuits 62 and 63 perform the following calculations.

Arithmetic circuit 62; when the person being measured = male: (413-T1 ') RR / 1000 Arithmetic circuit 63; when the person being measured = female: (418-T1') RR / 1000 ... (1 ) Here, switching between male and female is performed by the switch SW. This equation (1) is the so-called Arnold
Weisla's formula Male: LVET (ms) = T1 '=-1.7HR + 413 (ms) Female: LVET (ms) = T1' =-1.6HR + 418 (ms) (2) is modified. Here, LVET is the cardiac ejection time, HR is the number of heart stays, and RR is the heart stay cycle. Heart rate HR and heart rate cycle RR are HR = 60,000
Since there is a relationship of / RR, the normal value of equation (2) is
Men: 1.7 × 60 = 102, women: 1.6 × 60 = 96. Then, the calculation results of the calculation circuits 62 and 63 are output as metabolic information.

Further, LVET is expressed by the following T without using the Arnold-Weisla equation shown in the above equation (2).
It can also be obtained by normalizing 1 '.

That is, the normalized LVET _C is LVET _C (ms) = T1 ′ / (RR) ^1/2 (3)

Therefore, in this case, it is not necessary to change the arithmetic circuit by the man and woman as in the Arnold-Weisla equation.

The above-mentioned propagation ejection time T1 'causes respiratory fluctuation. In this arithmetic circuit, in order to eliminate this respiratory fluctuation, the average value of four or more heartbeats is calculated continuously.

Further, this LVET _C is the hourly heart rate I
Has a very strong correlation with. From the minute cardiac output I and the average blood pressure V which are correlated with the LVET _C , the cardiac work amount P is obtained as follows.

P = I × V (4) Therefore, by calculating LVET _C , the amount of cardiac work P can be calculated.

By using the above equation (3), the arithmetic circuit 62 and the arithmetic circuit 63 and the switch SW for switching between them are provided, and the arithmetic circuit is not divided into male and female and the arithmetic operation is performed by one arithmetic circuit. Both women can be measured.

The measured value E (predetermined time constant T1) from the timer 56 is supplied to the divider 65, and the divider 65
A value E / G obtained by dividing the measured value E (predetermined time constant T1) by the measured value G (propagation ejection time T1 ') output from the timer 60.
Is output as curing degree information (compliance information).

On the other hand, the second level detection circuit 66 is
The level of the pressure detection output detected by the pressure sensor 21 is detected and supplied to the press controller 68.

The third level detection circuit 67 detects the level of the air pressure inside the exhaust valve 9 detected by the third pressure sensor 24, and supplies it to the press control unit 68.

The pressing control unit 68 gradually lowers the pressing force of the pressing air bag 7 from the blood flow blocking state based on the detection outputs of the second level detecting circuit 66 and the third level detecting circuit 67. Further, the pressing force is controlled to be kept constant in the blood flow passage limit state where the detection output signal from the second level detection circuit 66 is obtained.

Next, the operation of the arterial medical information inspection apparatus 1 of the embodiment of the present invention configured as described above will be described.

First, the pressing control unit 41 controls the pressing air bag 7 by the air pump 8 and the exhaust valve 9 so that the first pressure sensor 21, the second pressure sensor 22 and the blood flow restricting element 23 are operated. The pressing force at the above-mentioned three positions provided is gradually reduced from the blood flow blocking state. Then, the pressure control unit 41 detects the pressure at which the blood flow first passes due to the level increase of the output of the second pressure sensor 22 by the level detector 40, and controls this pressing force to be constant. This state is the measurement state, and the first pressure sensor 21 outputs a predetermined time constant differential signal of the pressure pulse wave (volume pulse wave).

The first level detection circuit 51 detects when the pressure detection output of the first pressure sensor 21 exceeds a predetermined level, that is, the time point a at which the first aortic valve is opened,
The pulse A is output, and in response thereto, the timer 53, the timer 56, and the timer 60 start time measurement of the heartbeat cycle, the predetermined time constant, and the propagation ejection time, respectively.

The timer 53 is the first level detection circuit 51.
Pulse B from counter 52 after receiving pulse A from
The time until it is received, that is, the heartbeat cycle RR of the pressure pulse wave (volume pulse wave) is measured, and the measured value D is output to the arithmetic circuit 62 or 63 via the switch SW. The timer 56
After receiving the pulse A from the first level detection circuit 51,
The time until the pulse C is received from the counter 55, that is, a predetermined time constant T1 having a correlation with the compliance is measured, and the measured value E is output to the divider 25. Timer 60
Measures the time from the pulse A is received from the first level detection circuit 51 to the pulse F is received from the counter 19, that is, the propagation ejection time T1 ', and the measured value G is output as the post load information. Along with the measured value G, the arithmetic circuit 6
2, 63 and the divider 65.

The arithmetic circuits 62 and 63 perform the arithmetic operation by the above-mentioned equation (2) based on the measured value D (heartbeat cycle RR) and the measured value G (propagation ejection time T1 '), and output it as metabolic information.

In the divider 65, the value E / G obtained by dividing the measured value E (predetermined time constant T1) from the timer 56 by the measured value G (propagation ejection time T1 ') output from the timer 60 is used. Output as information (compliance information).

Therefore, since the measurement is carried out in the state of hemostasis, it is easy to non-open without being affected by peripheral resistance, and medical information such as afterload (whole body impedance), arm compliance and metabolism (thyroid function) is obtained. Can be obtained.

As described above, the arterial system medical information inspection apparatus 1 can detect medical information such as afterload information, arm compliance, and thyroid status.

Next, an example of the display contents of the display panel 12 of the arterial medical information inspection apparatus 1 will be described with reference to the drawings.

As shown in FIG. 10A, the display panel 12 displays the systolic blood pressure and the diastolic blood pressure as the detection result of the medical information. Further, the arterial system medical information inspection apparatus 1 has a memory for accumulating data of systolic blood pressure and diastolic blood pressure, and the display panel 12 displays data for several days, for example, based on the accumulated data. It is displayed as a graph as shown in 10 (e). When the medical information is detected, the display panel 12 displays the heart rate (HR) as shown in FIG. 10 (b) and the cardiac ejection time (E) as shown in FIG. 10 (c).
T), or a centering waveform as shown in FIG. Further, the display panel 12 displays the date and time as shown in FIG. 10D when medical information is not detected.

In the arterial medical information inspection device 1, the display of the display panel 12 is switched by the operation button 1 described above.
3 and 14.

In the arterial system medical information inspection apparatus 1, by operating the operation button 13, the operation shown in FIGS.
The display up to (d) is sequentially switched. That is, FIG.
The display of the systolic blood pressure and the diastolic blood pressure shown in (a), followed by FIG.
Display of the number of heart nights (HR) shown in 0 (b), and then FIG.
The display of the cardiac ejection time (ET) shown in (c), and subsequently the display of the date and time shown in FIG.
Further, by providing an up / down key having two contacts as the operation button 13, the display in the reverse order can be repeated.

Further, in the arterial system medical information inspection apparatus 1, by operating the operation button 14, the display is switched to the display shown in FIGS. 10 (e) and 10 (f). That is, FIG.
By operating the operation button 14 from the display of the systolic blood pressure and the diastolic blood pressure shown in (a), the display is switched to the display of the systolic blood pressure or the diastolic blood pressure shown in FIG. In addition, FIG.
From the display of the cardiac ejection time shown in (c), the operation button 14
By operating, the display is switched to the display of the heartbeat waveform shown in FIG.

As described above, the arterial medical information inspection device 1
Then, the detected medical information can be displayed to inform the user of the detection result.

[0074]

According to the valve of the present invention and the arterial system medical information inspection apparatus using this valve, the film-shaped stainless valve body has the valve seat formed inside and the bottom part of the upper valve. It is provided so that it can move freely. Therefore, when exhausting the air from the second ventilation hole to the first ventilation hole, the air is moved so as to close the first ventilation hole.
While controlling the displacement according to the pressure change in the internal space,
Note that gas is discharged from the first vent hole. Therefore, according to the valve according to the present invention and the arterial system medical information inspection apparatus using this valve, the exhaust amount is controlled by the valve body according to the pressure change in the valve, and the air is exhausted at a constant speed, It can be miniaturized.

[Brief description of drawings]

FIG. 1 is a plan view showing an arterial system medical information inspection apparatus to which an exhaust valve according to the present invention is applied.

FIG. 2 is a perspective view showing the arterial medical information inspection device from the bottom side.

FIG. 3 is a side view showing the arterial medical information inspection device.

FIG. 4 is a schematic view showing the arterial medical information inspection device.

FIG. 5 is a vertical sectional view showing an exhaust valve according to the present invention.

FIG. 6 is a diagram showing a pressure change with time in the exhaust valve.

FIG. 7 is a block configuration diagram showing a circuit configuration of the arterial system medical information inspection apparatus.

FIG. 8 is a diagram showing a pressed state of an artery by the first and second pressure sensors and the blood flow restricting element of the arterial system medical information inspection apparatus.

FIG. 9 is a diagram illustrating detection information and the like of the arterial medical information inspection device.

FIG. 10 is a diagram illustrating display contents of a display panel of the arterial medical information inspection device.

[Explanation of symbols]

1 Arterial medical information inspection device, 9 Exhaust valve, 32
Upper valve, 33 Lower valve, 33a Valve seat, 34 Valve plate, 35, 36 Vent hole

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-2-229564 (JP, A) JP-A-6-17952 (JP, A) Actually open 62-87270 (JP, U) Actually open 64- 42007 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F16K 15/00 F16K 24/00 A61B 5/02

Claims (3)

(57) [Claims] 1. A pair of upper and lower valves formed in a cylindrical shape with a bottom to be combined with each other, and a film-shaped stainless valve plate, wherein the upper valve has a first vent hole in a bottom surface portion. The lower valve is provided with a second vent hole on the bottom surface thereof, and the inner space of the lower valve in the internal space formed by the upper valve and the lower valve combined with each other,
A valve seat is formed, and the film-shaped valve plate has a shape that is substantially the same as the internal shape of the upper valve and the lower valve combined with each other, and the film shape of the upper valve and the lower valve combined with each other. It is movably provided inside between the valve seat and the bottom surface of the upper valve, and when air flows from the first vent hole to the second vent hole, the first vent hole is used. When the pores are opened and air flows from the second ventilation hole to the first ventilation hole,
It moves so as to close the first vent hole and
While controlling the displacement according to the pressure change between
A valve that discharges gas from a vent hole . 2. A pressing air bag for pressing an artery, an air pump for sending air to the pressing air bag, and a valve provided between the pressing air bag and the air pump. The valve includes a pair of upper and lower valves formed in a cylindrical shape with a bottom to be combined with each other, and a film-shaped stainless steel valve plate, and the air pump is connected to a bottom portion of the upper valve. A first vent hole is provided, and the lower valve is provided with a second vent hole to which the pressing air bladder is connected at the bottom surface, and the upper valve and the lower valve combined with each other are provided. In the inner peripheral portion of the lower valve of the formed internal space,
A valve seat is formed, and the film-like valve plate has a shape substantially the same as the internal shape of the upper valve and the lower valve combined with each other, and the film shape of the upper valve and the lower valve combined with each other. It is provided movably between the valve seat and the bottom part of the upper valve, and when the air flows from the air pump to the pressing air bag, the first vent hole is opened, When air flows from the pressing air bag to the air pump, it is moved so as to close the first ventilation hole.
Control to control the displacement according to the pressure change in the internal space.
Meanwhile , the arterial medical information inspection device is characterized in that gas is discharged from the first vent hole . 3. A pressure sensor is further provided, and an air outflow hole communicating from an inner peripheral portion to an outer side is formed in the upper valve and the lower valve combined with each other. The arterial system medical information inspection apparatus according to claim 2, wherein the air outflow hole is closed from one side to detect the pressure inside the valve.