JPS6142582B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air pine surgery machine that performs pine surgery by supplying and exhausting air to a compression band attached to a treatment area such as an arm or leg, inflating and deflating it, and particularly relates to a compression band and an air supply device. The present invention relates to an air supply/discharge device that is provided between a pump and sequentially supplies and exhausts air to a plurality of bags provided on a compression band.

Conventional air pine surge machines have the problem that air can only be supplied gradually to the bag body of the compression band due to the pump capacity, and as a result, the bag body expands slowly, making it impossible to obtain an effective feeling of pressure. To solve this problem, a surge tank was installed to store compressed air between the pump and the bag body, separate from the air supply/discharge device, but the structure of the air pine surge machine was extremely complicated. There was a problem with it becoming a reality.

The present invention has been made in view of the problems of the conventional example, and its purpose is to provide a first supply port communicating with a pump, a first supply port connected to the first supply port via a first valve, and a second supply port connected to the first supply port via a first valve. A plurality of valve means each having a pair of a second supply port communicating with the bag and a discharge port connected to the second supply port via a second valve are provided according to the number of bags, and a valve means is provided in accordance with the number of bags. The first valve of one valve means is closed by the driving means with a delay after the first valve of the next adjacent valve means is opened, and air is supplied to the bag body connected to the next valve means. An air supply/discharge device for an air pine surge machine that simultaneously supplies air at the time of start from a pump and a bag body connected to the one valve means to rapidly inflate the bag body and provide an effective pine surge feeling with a simple structure. The goal is to provide equipment.

Embodiments of the present invention will be described below based on the drawings.

1 is a compression band in which first to second bags 2 to 6 are connected, 7 is a pump for supplying air, and 8 is the pump 7
This air supply/discharge device is provided between the compression band 1 and the compression band 1 and sequentially supplies and discharges air from the pump 7 to the plurality of bags 2 to 6.

The air supply/discharge device 8 includes first to fifth valve means 9 to 1 provided according to the number of bags 2 to 6 of the compression band 1.
3, and a valve driving means 14 that also operates the valve means 9 to 13.

Each valve means 9 to 13 is connected to a first supply port 15
a second supply port 17 connected to the first supply port 15 via a first valve 16; and a discharge port 19 connected to the second supply port 17 via a second valve 18. and each first supply port 15 is connected to a pipe 20.
The second supply ports 17 are connected to the pump 7 via pipes 21, and each second supply port 17 is independently connected to each of the bags 2 to 6 via a pipe 21.
Further, the first valve 16 and the second valve 18 are integrally connected and are provided with push-up springs 22 and 23 at their upper and lower ends, and a bearing 25 is connected to the upper push-up spring 22 via a bearing receiver 24. , and the bearing 25 is attached to the cam 2 of the valve driving means 14, which will be described later.
6 to operate the valve. That is, when pressed by the cam 26 as shown in FIG. 2, the first and second valves 16 and 18 move downward to connect the first supply port 15 and the second supply port 17, and the pump 7 supplies air to the bags 2 to 6 to inflate the bags 2 to 6, and when the pressure is released by the rotation of the cam 26 as shown in FIG. and second valve 1
6 and 18 return upward, and the second supply port 17 and discharge port 19 communicate with each other, thereby discharging the air from the bags 2 to 6 and deflating the bags 2 to 6.

The valve driving means 14 includes a rotatably arranged cam 26.
, a gear 27 that is integrally connected to the cam 26 , and a feed pawl 2 that meshes with the gear 27 and rotates the gear 27
8, a solenoid 30 in which the feed pawl 28 is swingably attached to the tip of the plunger 29, and a control circuit for periodically operating the solenoid 30, and a plurality of valve means 9 to 13 are provided around the cam 26. are arranged, and each valve means 9 to 1 is opened by rotation of the cam 26.
The three first and second valves 16 and 18 are sequentially operated. 31 is a pressure spring of the plunger 29, 32 is a swing spring provided at the free ends of the plunger 29 and the feed pawl 28, and 33 is a reversal prevention device for preventing the gear 27 from reversing. Therefore, solenoid 3
When no current is applied, the plunger 29 is pushed upward by the pressing spring 31 as shown in FIG. 4, and the plunger 29 is stopped with the feed pawl 28 and the gear 27 engaged. Also, when the solenoid 30 is energized, the plunger 2 moves against the pressure spring 31 as shown in FIG.
9 is sucked downward, and the feed pawl 28 is removed from the gear 27. At this time, the plunger 29 and the feed pawl 28
The feed pawl 28 is pressed by the swing spring 32 provided between the feed pawl 28 and the feed pawl 28 shown in FIG.
The feed pawl 28 moves to the meshing position one tooth before the meshing position between the gear 8 and the gear 27. When the solenoid 17 is de-energized from this state, the suction of the plunger 29 is released, the plunger 29 is pushed upward again by the pressing spring 31, and the feed pawl 28 and the gear 27 mesh again, and the gear 27 is moved by one tooth. Rotate. The gear 27 has ten teeth, and by repeating the above operations, the cam 26, which is integrally connected to the gear 27, divides one revolution into ten steps, that is, steps of 36 degrees. By rotating the cam 26 in steps, the switching operation of the first to fifth valve means 9 to 13 operated by the cam 26 is accelerated and the bag body 2 is rotated.
to 6 suddenly send a large amount of air,
The expansion of the bags 2 to 6 is made steeper to improve the pine surge effect.

The control circuit of the solenoid 30 is shown in Figure 6, and the output waveform of the unstable multivibrator 34 is shown in Figure 7A.
FIG. 7B shows the output waveform of the mono multivibrator 35. That is, the control circuit includes an unstable multivibrator circuit 34 that generates a pulse signal at regular intervals t1 as shown in FIG. 7A, and a monomultivibrator circuit 35 that reduces the pulse width t2 as shown in FIG. 7B. It consists of a switching circuit 37 that operates to open and close the contacts of a relay 36, and by reducing the pulse width using a mono-multivibrator circuit 35, the solenoid 30 performs a suction operation for a short period of time, thereby suppressing the heat generation of the solenoid 30. ing. Furthermore, the pulse generation interval t1 (see FIG. 7) can be arbitrarily adjusted by the variable resistor 38 of the unstable multivibrator circuit 34, and the operation interval of the solenoid 30,
That is, the speed at which air is sequentially sent to each of the bags 2 to 6 can be freely varied.

8A to 8D show the operating states of the cam 26,
In state A, the valves of the first and fifth valve means 9 and 13 are pressed by the cam 26, the first valve 16 is opened, and the second valve 18 is closed, so that the first supply port 15 and the second valve 18 are closed. The first bag body 2 and the fifth bag body 6 are supplied with air and are inflated, and the valves of the other bags 3 to 5 have returned to the original position, so that the first bag body 2 and the fifth bag body 6 are inflated. The first valve 16 is closed, the second valve 18 is opened, the second supply port 17 and the discharge port 19 communicate with each other, and the bags 2 to 5 are contracted. Next, cam 26
In state B, which has been rotated by 36 degrees, only the valve of the first valve means 9 is pressed by the cam 26, and the first valve 1 is pressed by the cam 26.
6 opens, the second valve 18 closes, and the first valve 18 closes.
Only the bag 2 is inflated, the valve of the fifth valve means 13 is returned, the second valve 18 is opened, and the fifth bag 6 is deflated. In addition, in state C where the cam 26 is rotated by 72 degrees, the first and second bags 2 and 3 expand and further expand by 108 degrees.
In the state of rotation D, only the second bag body 3 is inflated and the first bag body 2 is contracted. and the second supply port 17, and then, with a delay, the second supply port 17 and the discharge port 19 of the previous valve means are communicated with each other to sequentially supply and discharge air to each of the bags 2 to 6, The bags 2 to 6 are inflated and deflated in sequence. These first to fifth valve means 9
A graph showing the operating states of 13 to 13 is as shown in FIG. 9 (the peaked portion indicates that the first valve 16 is open and the first supply port 15 and second supply port 17 are in communication with each other, and the flow of water to the bag body is shown in FIG. 9). When air is being supplied, the second valve 18 is opened in the valley portion and the second supply port 17 and the discharge port 19 communicate with each other to discharge air from the bag body. After the first valve of the first valve is opened and the supply of air to the bag is started, the second valve of the adjacent previous valve means is opened after a certain time delay to discharge the air from the bag. There is.

FIG. 10 shows the change in air pressure of the bag body, and when air supply to the second bag body 3 is started, the second bag body 3 and the first and second supply ports of the second valve means 10 are 15, 17 and the first and second valve means 9
Since the supply ports 15 and 17 are in communication with the first bag body 2, air from the first bag body 2 and air from the pump 7 are simultaneously supplied to the second bag body 3. As a result, the second bag body 3 expands rapidly.

In the above embodiment, the step rotation of the cam 10 is 36 steps.
Although the rotation is made in steps of 72 degrees, the step rotation is not limited to this and may be made in steps of 72 degrees.

As described above, the present invention includes a first supply port communicating with the pump, the first supply port, and a second supply port connected to the first supply port via the first valve and communicating with the bag body. , a plurality of valve means each having a pair of discharge ports connected to the second supply port via a second valve are provided according to the number of bags, and a valve drive means is used to control the first valve means of one valve means. The closing of the valve means is delayed after the opening of the first valve of the next adjacent valve means, and the air supply pump to the bag connected to the next valve means and the one valve means are connected. Since this is done from the bag body at the same time, the bag body expands steeply, providing an effective feeling of pressure and improving the pine surge effect. In addition, since the plurality of bags are sequentially inflated and deflated while overlapping the inflations of the front and rear bags for a certain period of time, the efficiency of sequential blood transport is improved and effective musculosurgery can be performed.

[Brief explanation of the drawing]

1 to 10 show one embodiment of the present invention, FIG. 1 is a perspective view of an air pine surge machine, and FIG.
Figures 3 and 3 are operation diagrams of the valve means, Figures 4 and 5.
The figure is an operation diagram of the valve driving means, Figure 6 is a control circuit diagram,
Figure 7A is the output waveform of the unstable multivibrator in the control circuit, Figure 7B is the output waveform of the monomultivibrator in the control circuit, Figure 8 is the cam operation diagram,
FIG. 9 is an operation waveform of the valve means, and FIG. 10 is a diagram of changes in air pressure of the bag body. 1... Compression band, 2 to 6... Bag body, 7... Pump, 8
... Air supply/discharge device, 9 to 13... Valve means, 14... Valve drive means, 15... First supply port, 16... First valve, 17... Second supply port, 18... Second valve, 19
...Discharge port, 26...Cam, 27...Gear, 28...Feed pawl, 29...Plunger, 30...Solenoid, 34
...Unstable multivibrator circuit, 36...Relay, 37...Switching circuit, 38...Variable resistance.

Claims (1)

[Scope of Claims] 1. A compression band consisting of a plurality of consecutively arranged bags and a pump for supplying air is provided, and air is sequentially supplied to and discharged from the bags to inflate and deflate the bags to perform pine surgery. In an air supply/discharge device for an air pine surge machine, there is provided a first supply port, a second supply port connected to the first supply port via a first valve, and a second supply port connected to the second supply port via a first valve. A plurality of valve means each having a discharge port connected via a valve are provided according to the number of the bags, and the first supply ports of each valve means are communicated with each other and connected to the pump, and the first supply port of each valve means is connected to the pump. The valve driving means for driving each of the valve means is constituted by a rotatable cam whose diameter gradually increases in the direction of rotation, and the plurality of valves are arranged around the cam. means are disposed, and the cam is rotationally driven to sequentially operate the first and second valves of each valve means, and the first valve of one valve means is opened to connect the pump and one bag body. At the same time, the second valve closes the discharge port and the first valve of the other valve means, and then the first valve of the valve means adjacent to the one valve means in the direction of rotation of the cam.
After opening the valve of the valve means to establish communication between the bag connected to the valve means, the pump, and the one bag, the first valve of the one valve means is closed and the second valve is opened. An air supply/discharge device for an air pine surge machine, characterized in that a bag body and a discharge port are communicated with each other. 2. The first valve and the second valve of the valve means are integrally connected, and the first valve is opened and the second valve is closed, and the first valve is closed and the second valve is opened. An air supply/discharge device for an air pine surge machine according to claim 1, characterized in that one of the operations is selectively performed. 3. The first valve and the second valve of the valve means are integrally connected, and the valve driving means includes a rotatably disposed cam, a gear integrally connected to the cam, and a gear meshing with the gear to rotate the gear. An air supply device for an air pine surge machine according to claim 1, characterized in that the air supply pawl for an air pine surge machine according to claim 1 is equipped with a feed pawl that causes the feed pawl to move, a solenoid that attaches the feed pawl to the tip of the plunger, and a control circuit that periodically operates the solenoid. Exhaust device. 4. The control circuit includes an unstable multivibrator circuit that generates pulse signals at regular intervals, a variable resistor that changes the interval at which the pulse signals are generated, and a switching circuit that opens and closes a relay connected to a solenoid based on the pulse signal. An air supply/discharge device for an air pine surge machine according to claim 3.