JP3405703B2 - Negative pressure / positive pressure load device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to negative pressure / positive pressure used for stimulating arterial baroreceptors in the carotid sinus by changing the pressure in the neck chamber covering the neck.
Regarding load device .

[0002]

2. Description of the Related Art Conventionally, a baroreceptor that plays an important role in blood pressure regulation is composed of a member that forms a chamber that covers the lower body and neck of a human, a negative pressure / positive pressure load device, and a biological signal measuring device. Negative pressure / positive pressure load systems are known.

The baroreceptors include arterial baroreceptors in the carotid sinus and aorta and cardiopulmonary baroreceptors present in the heart and lungs.
There are various types, and in the above system, an arterial baroreceptor in the carotid sinus can be stimulated by the cervical chamber and a cardiopulmonary baroreceptor can be stimulated by the lower body chamber.

The system described above can also be used in combination with body posture inclination to simulate circulatory dynamics in the microgravity environment of the universe, and supports various stimulation modes. The system contributes to the elucidation of the neural circulation control mechanism under various gravity environments.

Such an apparatus is constructed, for example, as shown in FIG. 9 (a). That is, the neck cover member 102 is attached to the neck of the subject 101 so that a neck chamber is formed over the front portion and the left and right side portions of the neck, and the intermediate chamber 103 is communicated with the neck chamber. . Then, the positive pressure air supply circuit 104 and the negative pressure air supply circuit 105 are connected in parallel to the intermediate chamber 103. The positive pressure air supply circuit 104 includes a solenoid opening / closing valve 1
04A, the throttle valve 104B, and the positive pressure tank 104C are connected in series. Similarly, the negative pressure air supply circuit 105 is also formed by connecting the electromagnetic opening / closing valve 105A, the throttle valve 105B, and the negative pressure tank 105C in series. Further, an electromagnetic opening / closing valve 106 as an atmosphere opening valve is connected to the intermediate chamber 103.

[0006]

By the way, in the above apparatus, one wall of the neck chamber formed by mounting the neck cover member 102 is constituted by the skin of the neck of the subject. When a constant pressure is applied in the cervical chamber, unlike the case of a solid chamber where the volume does not change, there is movement of body fluid in the subject's neck according to the pressure, and the movement of the body fluid causes the volume of the cervical chamber to change. Changes, resulting in pressure fluctuations within the cervical chamber. The movement of body fluid that causes such a pressure fluctuation does not occur immediately due to the pressure acting on the cervical chamber, but has a delay of a certain time. In this way, the volume of the cervical chamber changes with a delay of a certain time, so that it is attempted to change the pressure in the cervical chamber stepwise based on the R wave signal related to the pulse or the manual trigger signal. However, a sharp staircase waveform cannot be obtained. On the other hand, when a large pressure is applied in advance to obtain a predetermined pressure, overshoot occurs as shown in FIG. 9 (b). This has a similar problem not only when trying to obtain a stepwise waveform but also when trying to obtain a rectangular wave (pulse).

The present invention is a negative pressure / pressure device that changes the pressure in the cervical chamber that covers the human cervix in a stepwise or rectangular wave shape.
The purpose of the present invention is to reduce the influence of movement of body fluid on the neck in a positive pressure load device .

[0008]

According to the present invention, a neck chamber is formed by covering a human neck with a neck cover member, and the pressure in the neck chamber is set to a predetermined pressure to stimulate the neck. configured such that it gives the positive pressure air or negative pressure air to a large amount of feed to the neck in a chamber, after a predetermined pressure, the further supplying the positive pressure air or negative pressure air by trace The predetermined pressure is continuously maintained. The negative pressure / positive pressure load device according to the present invention is
Cover the neck between the neck with a neck cover member and attach the neck chamber.
The pressure inside the cervical chamber to a predetermined pressure.
And a negative pressure / positive pressure load device for stimulating the neck,
Positive pressure air source, negative pressure air source, the positive pressure air source and the neck
A positive pressure air supply circuit for connecting to a partial chamber,
Negative pressure air supply connecting the compressed air source and the neck chamber
Supply circuit and pressure to detect pressure in the neck chamber
A detection sensor, each of the air supply circuits
The solenoid on-off valve and the slightly opened solenoid on-off valve are installed in parallel.
And receives the signal from the pressure detection sensor,
With the magnetic on-off valve and the slightly opened electromagnetic on-off valve open, the neck
Positive pressure air or negative pressure air in the chamber of the neck.
Supply until the pressure in the chamber reaches the specified pressure value.
After the constant pressure value is reached, the solenoid on-off valve is closed.
While maintaining the open state of the slightly open solenoid on-off valve,
With a controller for maintaining a predetermined pressure value
Is. Here, the amount of negative pressure air and positive pressure air supplied
And the number of solenoid on-off valves according to the effective cross-sectional area of the solenoid on-off valves.
The number may be two or three.

In this way, the positive pressure air source or the negative pressure air
From the air source, the pressure is
Predetermined pressure in the cervical chamber with force detection sensor
Is supplied with pressurized air. When the specified pressure is reached,
A closed state with the solenoid on-off valve
On the other hand, the opened state of the slightly opened electromagnetic on-off valve is maintained. That conclusion
Inside the cervical chamber due to movement of body fluids
The volume in the chamber changes and the pressure in the chamber changes
However, the slight opening electromagnetic on-off valve is used to follow the change.
Negative pressure air or positive pressure air is supplied to the
The predetermined pressure is maintained. Therefore, the predetermined pressure
If the force is changed, for example at regular intervals, the initial pressure
Can give a stimulus in which the pressure changes stepwise
However, if it is only once, give a rectangular wave stimulus.
You can

[0010] When changing the pressure in the neck chamber stepwise, specifically, in the case of positive pressure starts to be initiated in positive pressure atmosphere of a predetermined pressure, it was maintained the predetermined pressure Thereafter, a negative pressure start is started in a negative pressure atmosphere of a predetermined pressure so that a large amount of the negative pressure air is repeatedly supplied while continuing to supply the negative pressure air in small amounts. In this case, after maintaining the predetermined pressure, further supplying a large amount of the positive pressure air for a predetermined time may be repeated while continuing to supply the positive pressure air in small amounts. Here, as the mode in which the pressure in the neck chamber changes in a stepwise manner, the predetermined pressure is a positive pressure, a positive pressure start mode in which the pressure is gradually reduced by a constant pressure, and the predetermined pressure are repeated. There are two modes: negative pressure and negative pressure start mode in which the pressure is gradually increased by a constant pressure.

[0011]

[0012]

In this case, it is desirable that a throttle valve be provided in series with the electromagnetic on-off valve.

With this configuration, by adjusting the throttle amount of the throttle valve, it is possible to adjust the amount of positive pressure air or negative pressure air supplied to the cervical chamber through the electromagnetic opening / closing valve. It is easy to adjust the time until it becomes.

Further, it is desirable to provide a fine opening throttle valve in series with the fine opening electromagnetic on-off valve.

In this way, by adjusting the throttle amount of the fine opening throttle valve, it is possible to finely adjust the amount of negative pressure air or positive pressure air supplied to the neck chamber through the fine opening electromagnetic on-off valve. As a result, the pressure inside the cervical chamber can be maintained constant.

Further, it is desirable to provide an atmosphere opening passage for opening the neck chamber to the atmosphere and an opening valve for opening the atmosphere provided in the atmosphere opening passage. Here, the atmosphere opening / closing valve may be an electromagnetic opening / closing valve, a manual opening / closing valve, or a combination thereof.

In this way, by opening the open / close valve for opening to the atmosphere, the pressure in the neck chamber is quickly brought to atmospheric pressure, and it is possible to prepare for an emergency.

Further, each of the positive pressure air supply circuit and the negative pressure air supply circuit may be provided with a buffer tank between the positive pressure air source and the negative pressure air source.

With this configuration, the pressure air from the negative pressure air source or the positive pressure air source is supplied through the buffer tank, so that the pressure is quickly set to the predetermined pressure.

Further, the neck cover member has a seal portion around the neck which is in contact with the neck, and the seal portion has a diameter larger than a portion contacting the lower side of the neck with other portions. It is desirable that

In this way, the sealability of the portion of the seal portion that contacts the lower side of the neck is improved, and the sealability is ensured even when positive pressure air is supplied to the neck chamber. It will be.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a view showing a schematic structure of a negative pressure / positive pressure load device according to the present invention, and FIGS. 2 (a) and 2 (b) are explanatory views of members constituting a neck chamber.

In FIG. 1, the negative pressure / positive pressure load device 1 is
By mounting the cervical cover member 2 on the cervical region of the subject H using the band-shaped fastener 3, the pressure inside the cervical chamber formed in the front part and the left and right side parts of the cervical region is changed. Then, the change in the condition of the neck of the subject H is inspected. Here, the pressurized air supplied to the neck chamber is the electromagnetic valve unit 7 in the casing of the device 1.
(Refer to FIG. 3) The supply amount is adjusted by the pressure air supply pipe 8
The pressure in the cervical chamber can be changed in a staircase-like stimulation mode in which the pressure is changed stepwise and in a rectangular-wave stimulation mode in which the pressure is changed into a rectangular wave. The pressure inside the neck chamber is detected by a pressure transmitter 9 (pressure detection sensor) provided in the middle of the pressure air supply pipe 8. The casing surface of the negative pressure / positive pressure load device 1 is an operation panel for performing various settings.

Specifically, as shown in FIGS. 2 (a) and 2 (b), the neck cover member 2 has such a size as to cover the front part of the neck of the subject H and the left and right side parts thereof. A seal material 4 (for example, silicone rubber) having a bulged seal portion formed around it, and reinforcing materials 5A and 5B (for example, FRP) screwed to the front surface side and the back surface side of the central portion thereof are provided. They are fixed together with screws 6. The seal member 4 has a seal portion 4a having a circular cross-section at its peripheral edge. A portion 4a1 of the seal portion 4a that contacts the lower chest of the neck is extended downward and the other portion is The diameter is made larger than that of the contacting portion 4a2 so that the chest is pressed regardless of the pressure state. The bulging portions 5a are bonded and fixed to the left and right sides of the reinforcing member 5A on the front surface side. When applying a stimulus to the neck, the neck cover member 2 is clamped and fixed so that the lower part of the sealing material 4 is pressed against the chest of the subject H by the fastener 3.

Next, the control system of the negative pressure / positive pressure load device 1 will be described.

As shown in FIG. 3, the neck cover member 2
The positive pressure air source 11 (7 kgf / cm ² ) or negative pressure air source 1
Positive pressure air or negative pressure air from 2 (-600 mmHg) is passed through the solenoid valve unit 7 and the pressure air supply pipe 8,
It is adapted to be supplied to the neck chamber in the neck cover member 2. The positive pressure is
Negative pressure is generated by a vacuum pump, and stored in a tank to form a positive pressure air source 11 and a negative pressure air source 12, respectively.

The solenoid valve unit 7 is provided with a positive pressure air supply circuit 13, which functions as a pressure pushing circuit, a negative pressure air supply circuit 14, which functions as a pressure drawing circuit, and an atmosphere opening circuit 15, which are provided in parallel. It is independently connected to the neck chamber (neck cover member 2).

The positive pressure air supply circuit 13 connects the cervical chamber (neck cover member 2) to the first buffer tank 21, and serves as first and second electromagnetic on-off valves for pressure pushing. Positive pressure solenoid valves 13A, 13B, positive pressure throttle valve 13C as a throttle valve for pressure pushing, positive pressure fine open throttle valve 13 as a fine opening throttle valve for pressure pushing
D, and a positive pressure fine open solenoid valve 13E as a fine open solenoid on-off valve for pressure pushing. The first positive pressure solenoid valve 1
3A is in parallel relationship with the positive pressure throttle valve 13C and the second positive pressure solenoid valve 13B that are in series relationship, and is also in parallel with the positive pressure fine open throttle valve 13D and the positive pressure slight open solenoid valve 13E that are in series relationship. To be related. In addition, the first buffer tank 21
In addition, it is connected to the positive pressure air source 11 via the first pressure regulating valve 22 (0.2 to ² kgf / cm ² ).

Further, the negative pressure air supply circuit 14 also connects the neck chamber to the second buffer tank 31, and serves as a first solenoid valve for pressure withdrawal.
-Third negative pressure solenoid valves 14A, 14B, 14C, negative pressure throttle valve 14D as a throttle valve for pressure relief, negative pressure fine open throttle valve 14E as a fine opening throttle valve for pressure relief, and for pressure relief It has a negative pressure slightly opened solenoid valve 14F as the slightly opened solenoid on-off valve. The first negative pressure solenoid valve 14A is
The negative pressure throttle valve 14D and the third negative pressure solenoid valve 14 which are in parallel relationship with the second negative pressure solenoid valve 14B and are in serial relationship.
It has a parallel relationship with C, and further has a negative relationship with the negative pressure slight opening throttle valve 14D and the negative pressure slightly opening solenoid valve 14F which are in series relationship. The negative pressure air source 12 is connected to the second buffer tank 31 via a second pressure adjusting valve 32 (0 to -760 mmHg).

Further, the atmosphere opening circuit 15 is provided with an atmosphere opening electromagnetic valve 15A as an electromagnetic opening and closing valve for opening to the atmosphere and a manual opening and closing valve 15B for opening to the atmosphere in parallel, and is opened to the atmosphere through them. It is like this.

The pressure transmitter 9 and each of the circuits 13 to 15 are linked to various switches provided on the operation panel 10 and a personal computer 42 via a neck control rack 41 as a controller. Neck driving stimulus conditions can be set.

On the operation panel 10, a neck operation switch 10A for supporting the start of the operation for stimulating the neck, a manual trigger switch 10B for outputting a trigger signal for stimulating the neck, and the neck are stimulated. In addition to the neck end switch 10C for instructing the end of operation, the machine side mode for performing various settings with various switches on the operation panel 10
Alternatively, the machine side operation for selecting whether to use the PC mode in which various settings are performed by the PC 42-PC operation selection switch 10D, the pressure in the neck chamber is changed in a stepwise manner, and stepwise stimulation is applied to the neck. Stepwise stimulus-rectangular wave stimulus selection switch 10E for selecting whether to use the stepwise stimulus mode or the rectangular wave stimulus mode in which the pressure in the cervical chamber is changed for a certain period of time. R-wave synchronization-manual trigger selection switch 10F for selecting whether to synchronize with a manual trigger synchronization signal, pressure selection switch 10G that also functions as a selection switch for selecting negative pressure start or positive pressure start by selecting withdrawal pressure or pushing pressure, stepwise Start pressure setting switch 10H for setting the start pressure and the end pressure in the stimulation mode
Further, there are provided an end pressure setting switch 10K and a rectangular wave stimulation time setting switch 10L for setting a time for applying stimulation in the rectangular wave stimulation mode.

Next, the operation of the negative pressure / positive pressure load device 1 will be described.

When starting according to the main routine shown in FIG . 4 , first, the operation mode is selected (step S1). That is, the machine side mode or the personal computer mode is selected.

When the machine side mode is selected, the machine side operation-PC operation selection switch 1 on the operation panel 10 is selected.
OD is operated to select the machine-side operation (step S2), and then the stimulation mode is selected (step S3). That is, the stepwise stimulation mode or the rectangular wave stimulation mode is selected.

When the stepwise stimulation mode is selected, the stepwise stimulation-rectangular wave stimulation selection switch 10E on the operation panel 10 is operated to select the stepwise stimulation mode (step S4), and the process proceeds to step S5. .

In step S5 , the operation panel 10
In the above, using the start pressure setting switch 10H, set the start pressure value when starting the stepwise stimulation mode,
The end pressure setting switch 10K is used to set the end pressure value when ending the stepwise stimulation mode, and the pressure selection switch 10G is used to set the withdrawal pressure in the positive pressure start stepwise stimulation mode to the negative pressure. The pushing pressure in the case of the stepwise stimulation mode of the start is set, and the R wave synchronization-manual trigger selection switch 10F is used to change the stepwise using the R wave synchronizing signal or the stepwise using the manual trigger synchronizing signal. Whether or not the start pressure value is higher than the end pressure value (step S
6) If it is higher, it is judged that the positive pressure start, and the result is shown in FIG.
The process moves to A shown in (a) . On the other hand, if it is not higher, it is judged whether or not the start pressure value is lower than the end pressure value (step S7).
The process moves to B shown in FIG. Further, when the start pressure value is neither higher or lower than the end pressure value, it is determined whether or not the forced termination is performed (step S8) . the program shifts to C shown in), if not terminated, the process returns to step S5, thereby reinitialize.

When the rectangular wave stimulation mode is selected in step S3, the stepwise stimulation / rectangular wave stimulation selection switch 10E is operated on the operation panel 10 to select the rectangular wave stimulation mode (step S9). , And proceeds to step S10. In step S10, in the operation panel 10, using a pressure selection switch 10G, push in the case of a square wave stimulation mode positive pressure start
Was included pressure, to set the withdrawal pressure of the case of the rectangular wave stimulation mode of negative pressure start, sets the time to impart stimulated by square wave with square wave stimulation time setting switch 10L, then, the pressure selection switch 10G It is determined whether or not the pressure set at is the + side (positive pressure) (step S10), and if it is the + side, the pushing pressure is set, and it is determined that the positive pressure start, On the other hand, if it is not the + side while moving to D shown in FIG. 7A, it is judged whether or not the pressure selection switch 10G is the-side (negative pressure) (step S11). since set, it is determined that the negative pressure start, the process proceeds to E illustrated in FIG. 8 (a). Furthermore, if neither positive pressure start nor negative pressure start has occurred, it is determined whether or not forced termination (step S12), and if forced termination, then FIG. 7A or FIG.
The program shifts to F shown in (a), if not terminated,
Returning to step S10, the initial setting is performed again.

On the other hand, when the personal computer mode is selected, the machine side operation-personal computer operation switch 10D on the operation panel 10 is operated to select the personal computer operation (step S14), and then the stimulation mode is selected (step S14). Step S15).

When the stepwise stimulation mode is selected, various settings similar to those in steps S4 to S8 are performed by the operation panel 10.
This is done on the CRT screen of the personal computer 42 , not on the various switches above. That is, the stepwise stimulation-rectangular wave stimulation selection switch 10E is operated on the operation panel 10 to select the stepwise stimulation mode (step S16), and the process proceeds to step S17. In step S17 , on the CRT screen of the personal computer 42 , the start pressure value,
Selection of end pressure value, drawing pressure or pushing pressure,
The selection whether to use the R wave synchronization signal or the manual trigger signal is set, and then it is determined whether the start pressure value is higher than the end pressure value (step S18).
When it is determined that the positive pressure has started, the process moves to A shown in FIG. On the other hand, if it is not higher, it is judged whether or not the start pressure value is lower than the end pressure value (step S19), and if it is lower, it is judged that the negative pressure start, and the process proceeds to B shown in FIG. 6A . To do. Further, when the start pressure value is neither higher or lower than the end pressure value, it is determined whether or not the forced end (step S20) .
On the other hand, the process proceeds to (a) or C shown in FIG. 6 (a) , but if it is not forcibly ended, the process returns to step S17, and the initial setting is performed again.

When the rectangular wave stimulation mode is selected in step S15, the stepwise stimulation / rectangular wave stimulation selection switch 10E is operated on the CRT screen of the personal computer 42 to select the rectangular wave stimulation mode (step S21). ,
The process proceeds to step S22, and the same processing as steps S10 to S13 is performed on the CRT screen of the personal computer 42 . That is, on the CRT screen of the personal computer 42 , in step 22, the pull-out pressure or the push-in pressure is selected, the negative pressure start or the positive pressure start is selected, the rectangular wave stimulation time is set, and the pressure selection switch is selected on the operation panel 10. It is determined whether or not 10G is on the + side (step S23). If it is on the + side, it is determined that the positive pressure has started, and the process moves to D. On the other hand, if it is not on the + side, the pressure selection switch 10G is turned on. It is determined whether or not it is the negative side (step S24), and if it is the negative side, the process proceeds to E.

Further, if neither the positive pressure start nor the negative pressure start is made, it is judged whether or not it is a forced end (step S25). The process returns to step S22 and the setting is performed again. -Stepwise stimulation mode- (1) In case of positive pressure start In this mode, the pressure is increased to the operation start pressure, and after holding for a certain period of time, the air is stepped to the operation end pressure in synchronization with the R wave signal or the manual trigger signal. Is a control mode in which the stimulus is pulled out and a stimulus that gradually changes in the direction of decreasing pressure is applied to the neck. The processing flow is as shown in FIG. 5A, and the pressure change as shown in FIG. It is said that

As shown in FIG. 5 (a), first, the neck operation switch 10A is turned on (step S31), and the first and second positive pressure solenoid valves 13A and 13B and the positive pressure slightly open solenoid valve.
13E is opened (step S32).

Then, it is judged whether or not the cervical stimulation operation is completed (step S33).
It is determined whether or not the measured value of the pressure in the cervical chamber by the pressure transmitter 12 has reached a preset start pressure value (step S34). If not, step S34
Returning to 32, while maintaining the open state of the solenoid valves 13A, 13B, 13E , if reached, the first and second positive pressure solenoid valves 13A, 13B are closed (step S35) and the pressurization is stopped. . At this time, the positive pressure micro-opening solenoid valve 13E remains open, and a small amount of positive pressure air adjusted by the positive pressure micro-opening throttle valve 13D is constantly supplied to the cervical chamber, which causes pressure fluctuation due to movement of body fluid. Modified, neck chamber 1
The pressure within 1 is kept constant at the starting pressure.

Then, it is again determined whether or not the cervical stimulation operation is completed (step S36). If it is not completed, an R wave signal or a manual trigger signal (pulse signal) is input (step S37). , With that as the trigger, the first
-The third negative pressure solenoid valves 14A to 14C are opened for a predetermined time required to decrease by a predetermined pressure (drawing pressure), and the negative pressure slightly open solenoid valve 14F is also opened (step S38). ), It is determined whether or not the value measured by the pressure transmitter 12 has reached the end pressure value (step S3).
9). In this case, the negative pressure differential opens the solenoid valve 14F remain in the open state, are withdrawn continuously negative pressure air <br/> gas traces adjusted by negative pressure differential to open the throttle valve 14E from the neck chamber, Pressure fluctuations due to movement of body fluids are corrected to reduce the pressure in the cervical chamber by a predetermined pressure and maintain it constant. Further, although the positive pressure slight opening solenoid valve 13E remains open, the positive pressure slightly opening throttle valve 13D causes the positive pressure slightly opening solenoid valve 13E to supply positive pressure air at a negative pressure slightly opening electromagnetic valve. A small amount of negative pressure air supplied to the cervical chamber through the valve 14F is adjusted in advance so as not to keep the cervical chamber pressure constant.

If the end pressure value has not been reached, the process returns to step S36 to continue the cervical stimulation operation, and based on the R wave signal or the manual trigger signal, as shown in FIG. While continuously supplying a small amount of air, the negative pressure air is repeatedly supplied in a large amount for a predetermined time, and the pressure in the neck chamber 11 is stepwise reduced to stimulate the neck. If the end pressure value is reached while continuing the partial stimulation operation, it is not necessary to continue the neck stimulation operation. Therefore, the first to third negative pressure solenoid valves 14
A to 14C are closed and negative pressure slightly open solenoid valve 14
F is closed, and the atmosphere opening solenoid valve 15A is opened (step S40), the neck chamber is opened to the atmosphere, and the process ends.

If it is determined in step S33 that the neck stimulation is completed, the first to third negative pressure solenoid valves 14A to 14C are immediately closed and the negative pressure slightly open solenoid is closed. The valve 14F is closed, the atmosphere opening solenoid valve 15A is opened, and the neck chamber 11 is opened to the atmosphere.
finish. (2) In case of negative pressure start In this mode, the pressure is reduced to the operation start pressure, and after holding for a certain time, the air is pushed stepwise to the operation end pressure in synchronization with the R wave synchronization signal or the manual trigger synchronization signal, This is a control mode in which a stimulus that gradually changes in the direction of increasing pressure is applied to the area, and the processing flow is as shown in FIG. 6A, and the pressure change is as shown in FIG. 6B.

First, the neck operation switch 10A is turned on (step S51), and the first to third negative pressure solenoid valves 14A to 14A.
14C is opened and the negative pressure slight opening solenoid valve 14F is opened (step S52).

Then, it is judged whether or not the cervical stimulation has ended (step S53). If not, whether the measured value of the pressure in the cervical chamber by the pressure transmitter 12 has reached the starting pressure value. It is determined whether or not (step S5
4) If the start pressure value has not been reached, it is necessary to continue the supply of negative pressure air, so the process returns to step S52, and the first to third negative pressure solenoid valves 14A to 14C and the negative pressure slightly opening solenoid are returned. While maintaining the open state of the valve 14F, if the start pressure value is reached, it is no longer necessary to continue the supply of negative pressure air, so the first to third negative pressure solenoid valves 14A to 14C.
Is closed (step S55). At this time, the negative pressure slight opening solenoid valve 14F remains open and the negative pressure slightly opening throttle valve 14 is opened.
A small amount of negative pressure air regulated by E is constantly discharged from the cervical chamber.
As with the positive pressure start, the pressure fluctuation due to the movement of the body fluid is corrected and the pressure in the cervical chamber is maintained constant at the operation start pressure.

Then, it is judged again whether or not the neck stimulation is finished (step S56).
The wave synchronization signal or the manual trigger synchronization signal is output (step S57), and the first and second positive pressure solenoid valves 13A and 13B are opened for a predetermined time to press the pressure, and the positive pressure slightly open solenoid valve 13E is opened. Is opened (step S5
8) It is determined whether the measured value has reached the end pressure value (step S59). Also at this time, the positive pressure slightly open solenoid valve 13
While E is in the open state, a small amount of positive pressure air adjusted by the positive pressure fine opening throttle valve 13D is constantly supplied to the cervical chamber, and the pressure fluctuation due to the movement of body fluid is corrected, The pressure is increased by a predetermined pressure and maintained constant. Further, although the negative pressure slightly open solenoid valve 14F remains open, the negative pressure slightly open solenoid valve 1 is opened by the negative pressure fine open throttle valve 14E.
The amount of negative pressure air supplied through 4F is the positive pressure micro open solenoid valve 1
The small amount of positive pressure air supplied to the cervical chamber through 3E is preconditioned so as not to impair maintaining the cervical chamber pressure constant.

If the end pressure value has not been reached, the process returns to step S56, the neck stimulation is continued, and as shown in FIG. 6 (b), the positive pressure air is continuously supplied while the positive pressure air is continuously supplied. Repeatedly supplying a large amount of compressed air for a predetermined period of time, the pressure inside the cervical chamber is increased stepwise, while if the end pressure value is reached, in order to end the cervical stimulation operation, 1st and 2nd positive pressure solenoid valve 13
A and 13B are closed and positive pressure slightly open solenoid valve 13E
Is closed, the atmosphere opening solenoid valve 15A is opened (step S60), and the process ends.

If it is determined in step S53 that the cervical stimulation has ended, the first and second positive pressure solenoid valves 13A and 13B are immediately closed and the positive pressure slightly open solenoid valve is immediately closed. 13E is closed, and the atmosphere opening solenoid valve 15A is opened (step S60), and the process ends. -Square wave stimulation mode- (1) In the case of positive pressure start This mode is a control mode in which a certain amount of air is pushed in, the pressure is returned to atmospheric pressure after a preset time, and stimulation is given to the neck, as shown in FIG. 7 (a). The process flow is as shown in Fig. 7, and
The pressure is changed as shown in (b).

The neck operation switch 10A is turned on (step S71), the manual trigger switch 10B is turned on (step S72), and the first and second positive pressure solenoid valves 13 are turned on.
A and 13B are opened for a predetermined time (step S7).
3) Then, it is determined whether or not the cervical stimulation has ended (step S74). If not, a rectangular wave stimulation time timer (not shown) is started (step S75),
The positive pressure slightly open solenoid valve 13E is opened (step S7).
6). At this time, the positive pressure micro-opening solenoid valve 13E remains open, and a small amount of positive pressure air adjusted by the positive pressure micro-opening throttle valve 13D is constantly supplied to the cervical chamber, which causes pressure fluctuation due to movement of body fluid. Is corrected so that the pressure in the cervical chamber is maintained constant (pushing pressure).

Then, it is judged again whether or not the neck stimulation is finished (step S77). If it is not finished,
Whether or not the rectangular wave stimulation time is up is determined (step S78), and if the time is up, the positive pressure slightly open solenoid valve 13E is closed (step S79), and the atmosphere open solenoid valve 15A is opened ( step S80), while ends, if not time-up, the process returns to step S76, to maintain the open state of the positive pressure slightly open solenoid valve 13E.

If the cervical stimulation is finished in step S74, the first and second positive pressure solenoid valves 13A, 13
B is closed (step S81), step S7
If the cervical stimulation has been completed in step 7, the process directly proceeds to step S79, and the positive pressure slightly open solenoid valve 13E is closed. (2) In the case of negative pressure start This mode is a control mode in which a certain amount of air is drawn, and after a preset time, it is returned to atmospheric pressure and stimulation is given to the neck, and the processing shown in FIG. The flow of FIG.
The pressure is changed as shown in (b) .

The cervical operation switch 10A is turned on (step S91), the manual trigger switch 10B is turned on (step S92), and the first to third negative pressure solenoid valves 14A-
14C is opened for a predetermined time (step S93), and then it is determined whether or not the neck stimulation is finished (step S94). If not, the rectangular wave stimulation time timer is started (step S95). , Negative pressure slightly open solenoid valve 14
F is opened (step S96).

Then, it is judged again whether or not the cervical stimulation is completed (step S97), and if it is not completed,
Whether or not the rectangular wave stimulation time is up is determined (step S98). If the time is up, the negative pressure slightly open solenoid valve 14F is closed (step S99), and the atmosphere open solenoid valve 15A is opened ( Step S100) is ended, but if the time is not up, the process returns to step S96, and the opened state of the negative pressure slightly open solenoid valve 14F is maintained. At this time, the negative pressure differential opens the solenoid valve 14F remain in the open state, negative pressure air traces adjusted by negative pressure differential to open throttle valve 14E are withdrawn continuously from the neck chamber, the pressure fluctuation due to movement of fluid Is corrected so that the pressure in the cervical chamber is maintained constant (withdrawal pressure).

If the neck stimulation is completed in step S94, the first to third negative pressure solenoid valves 14A to 14C are closed (step S101), and step S94 is performed.
If the cervical stimulation is completed in step S9, the process proceeds to step S99, and the negative pressure slightly open solenoid valve 14F is closed.

[0061]

The present invention is implemented as described above and has the following effects.

[0062]

[0063]

[0064] negative pressure, positive pressure load device according to the present invention, the pressure in the neck chamber reaches a predetermined pressure, control
The electromagnetic open / close valve is closed while the slightly open electromagnetic open / close valve is maintained in the open state, so the volume inside the cervical chamber changes due to movement of body fluids in the cervical region, etc. Even if the internal pressure changes, it is possible to supply negative pressure air or positive pressure air so as to follow the change, correct the pressure, and maintain a predetermined pressure with a simple structure. it can. Therefore, similarly to the case described above, if the stimulus with such a predetermined pressure is repeated by changing the pressure stepwise, it is possible to give a stimulus in which the pressure stepwise changes from the initial pressure, A rectangular wave-shaped stimulus can be given only once.

In this case, if the throttle valve is provided in series with the solenoid on-off valve, the positive pressure air or negative pressure supplied to the cervical chamber through the solenoid on-off valve can be adjusted by adjusting the throttle amount of the throttle valve. It is possible to adjust the amount of compressed air, and it is possible to easily adjust the time until a predetermined pressure is reached.

Further, if a fine opening throttle valve is provided in series with the fine opening solenoid on-off valve, the throttle amount of the fine opening throttle valve is adjusted so that the fine opening solenoid valve is supplied to the cervical chamber. The amount of the negative pressure air or the positive pressure air to be controlled can be finely adjusted, and the constant pressure in the cervical chamber can be easily realized.

Further, if an atmosphere opening passage for opening the neck chamber to the atmosphere and an atmosphere opening on-off valve provided in the atmosphere opening passage are provided, the atmosphere opening on-off valve can be opened. The pressure inside the cervical chamber is quickly set to the atmospheric pressure, and it is possible to prepare for an emergency.

Further, if the positive pressure air supply circuit and the negative pressure air supply circuit are respectively provided with a buffer tank between the positive pressure air source and the negative pressure air source, the negative pressure air is supplied through the buffer tank. Since the pressurized air from the air source or the positive pressure air source is supplied, it is possible to quickly reach the predetermined pressure.

Further, the neck cover member has a seal portion around the neck portion, which is in contact with the neck portion, and the diameter of the seal portion is such that the portion contacting the lower side of the neck portion is larger than the portion contacting the other portion. By doing so, the sealability of the portion of the seal portion that contacts the lower side of the neck portion is improved, so that the sealability can be secured even when a positive pressure is applied to the neck chamber.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a negative pressure / positive pressure load device according to the present invention.

2 (a) and 2 (b) are explanatory views of members constituting a neck chamber, respectively.

FIG. 3 is a block diagram of a control system of the negative pressure / positive pressure load device according to the present invention.

FIG. 4 is a flowchart showing a basic flow of neck stimulation operation in the negative pressure / positive pressure load device according to the present invention.

FIG. 5 (a) is a flow chart showing a flow of a stimulation operation in which a stepwise stimulation is applied at a positive pressure start, and FIG. 5 (b) is a diagram showing a pressure change in the neck chamber in that case.

FIG. 6 (a) is a flowchart showing a flow of a stimulation operation in which a stepwise stimulation is applied by negative pressure start, and FIG. 6 (b) is a diagram showing a pressure change in the neck chamber in that case.

FIG. 7 (a) is a flow chart showing the flow of a stimulation operation in which rectangular wave stimulation is applied at a positive pressure start, and FIG. 7 (b) is a diagram showing pressure changes in the cervical chamber in that case.

FIG. 8A is a flow chart showing a flow of stimulation operation in which rectangular wave stimulation is applied by negative pressure start, and FIG. 8B is a diagram showing a pressure change in the neck chamber in that case.

FIG. 9 (a) is a schematic configuration diagram of a conventional negative pressure / positive pressure load device, and FIG. 9 (b) is a diagram showing a pressure change in the neck chamber by the device.

[Explanation of symbols]

H subject 1 Negative pressure / positive pressure load device 2 Neck cover member 4 Seal material 4a Seal part 7 Solenoid valve unit 10 Operation panel 11 Positive pressure air source 12 Negative pressure air source 13 Positive pressure air supply circuit 13A First positive pressure solenoid valve 13B Second positive pressure solenoid valve 13C Positive pressure throttle valve 13D positive pressure fine open throttle valve 13E Positive pressure micro open solenoid valve 14 Negative pressure air supply circuit 14A First negative pressure solenoid valve 14B Second negative pressure solenoid valve 14C Third negative pressure solenoid valve 14D Negative pressure throttle valve 14E Negative pressure fine open throttle valve 14F Negative pressure slightly open solenoid valve 15 atmosphere open circuit 15A atmosphere open solenoid valve 21 First Buffer Tank 31 Second buffer tank

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-10-127721 (JP, A) JP-A-8-252286 (JP, A) JP-A-62-204762 (JP, A) JP-A-60- 128978 (JP, A) Actual Kaihei 3-7828 (JP, U) JP 54-32171 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61H 7/00 G05D 16 / 20

Claims (6)

(57) [Claims] 1. A human neck is covered with a neck cover member.
Form a cervical chamber and apply pressure inside the cervical chamber.
Negative or positive pressure load that stimulates the neck as a predetermined pressure
A device comprising a positive pressure air source, a negative pressure air source, the positive pressure air source, and the neck.
A positive pressure air supply circuit for connecting to a partial chamber,
Negative pressure air supply connecting the compressed air source and the neck chamber
Supply circuit and pressure to detect pressure in the neck chamber
A detection sensor, and each of the air supply circuits is provided with an electromagnetic opening / closing valve and a slight opening.
An electromagnetic on-off valve is provided in parallel, receives the signal from the pressure detection sensor, and receives the signal from the electromagnetic on-off valve.
And the cervical chain with the slightly opened electromagnetic on-off valve opened.
Positive pressure air or negative pressure air is supplied to the neck chamber.
Supply until the internal pressure reaches the specified pressure value
After reaching the value, the solenoid on-off valve is closed.
Maintaining the open state of the slightly open solenoid on-off valve,
And a controller for maintaining the force value.
Negative pressure / positive pressure load device. 2. The solenoid valve is provided with a throttle valve in series.
The negative pressure / positive pressure load device according to claim 1. 3. A fine opening throttle valve is directly connected to the fine opening electromagnetic on-off valve.
The negative pressure / positive pressure load device according to claim 1 or 2, which is provided in a row . 4. Further, the neck chamber is opened to the atmosphere.
The atmosphere open passage to be released and the large atmosphere provided in the atmosphere open passage.
An electromagnetic opening / closing valve for air release.
Negative pressure-positive pressure load device according to. 5. The positive pressure air supply circuit and negative pressure
An air supply circuit is provided between the positive pressure air source and the negative pressure air source.
And a buffer tank is provided in each.
The negative pressure / positive pressure load device according to any one of 1 to 4 . 6. The cervical cover member contacts the cervix around the periphery.
Has a touchable seal that contacts the underside of the neck
The diameter of the part that contacts
The negative pressure / positive pressure load device according to any one of claims 1 to 5 .