JPH0638856B2 - Medical hoseless spray and its air charger - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical hoseless spray and its air charger, which are used for medical treatment, particularly otolaryngology or dental treatment. In otolaryngology or dentistry, air pressure is often used to spray a drug solution onto an affected area of a patient. The treatment table used for this treatment is provided with a compressor or the like for sending compressed air inside. Then, the compressor is connected to the chemical sprayer by a hose. When the treatment position changes, the doctor must hold the sprayer in his hand and move the hose together. Therefore, the hose-equipped nebulizer not only interfered with the treatment of the hose, but also increased the fatigue of the doctor. Therefore, there has been an increasing demand for a hoseless sprayer, that is, a hoseless spray.

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIG. FIG. 8 is a diagram for explaining a medical hoseless spray and its air charger. In FIG. 8, reference numeral 811 denotes a chemical liquid container, which is a spray unit 81 via a lid plug 812.
Connected to 6. Reference numeral 813 is an opening / closing valve provided on one side of the lid plug 812. Then, when the pusher 814 is pushed by the doctor's thumb, the sliding bar 815 moves to open a valve (not shown) of the open / close valve 813. Therefore, the compressed air enters the chemical liquid container 811 from the inside of the accumulator tank 817 through a path that is not visible in the figure. When the pressure in the chemical liquid container 811 increases, the chemical liquid in the chemical liquid container 811 is sucked up through the suction pipe 819. Then, the chemical liquid is atomized and sprayed from the tip of the injection pipe 818. Open / close valve 8
13 is connected to a pressure regulator 821 via an air supply pipe 820, and is detachably attached to a pressure storage tank 817 by a nut 822. In addition, the chemical liquid container 811,
Open / close valve 813, spraying unit 816, and pressure regulator 821
Is integrated via a hoseless spray lid plug 812 'and can be separated from the accumulator tank 817 from the hoseless spray lid plug 812'.

At the lower part of the accumulator tank 817, an air supply port 82
A leg piece 824 made of a magnetic material and provided with a guide hole in the center is attached to the bottom of the leg piece 824. An upper tubular valve rod 826 having an upper valve 825 is slidably attached to the guide hole of the leg piece 824. A part of the upper tubular valve bar 826 projects from the guide hole of the leg piece 824. In addition, the leg piece 824 of the upper tubular valve rod 826 is
Although not shown in the drawing, a portion in contact with the end of the tube has a hole communicating from the inside of the tube to the outside, and this hole constitutes a valve. Further, in the upper part of the upper valve 825, the upper recess 82
5'is formed. The doctor holds the hoseless spray A described above in his hand for treatment.

Next, an air charger B for compressing air and accumulating it in a pressure accumulating tank 817 of the hoseless spray A.
Will be described. At the center of the upper part of the housing 830, there is a sliding groove into which the leg piece 824 is fitted and which can slide up and down. Above the sliding groove, the hoseless spray A is provided.
A receiving portion 831 for inserting is attached. A sensor 832 is attached to the side of the receiving portion 831. Therefore, when the hoseless spray A is not used and is attached to the receiving portion 831, the sensor 832 detects this and sends it to a controller (not shown).
When the control device receives the detection signal from the sensor 832,
The coil 835 of the electromagnet 833 arranged in the housing 830 as shown in FIG. Then, a yoke 836 supporting the coil 835.
Are magnetized by the current and attract the leg 824 downwards. A lower valve 837 and a compressor connecting portion 839 are provided in the lower recess 834 formed in the yoke 836. And the lower valve 837 is
The lower tubular valve rod 840 faces upward, and a hole (not shown) communicates from the inside of the lower tubular valve rod 840 to the outside, which constitutes a valve. The upper end of the lower tubular valve rod 840 projects from the yoke 836 and the upper tubular valve rod 82 that projects from the tip of the leg piece 824.
It is in contact with the tip of 6.

For example, when the leg piece 824 is attracted downward in the figure by the magnetized yoke 836, the upper valve 82
5 and the upper part of the upper recess 825 'are in contact with each other, and a hole communicating from the inside of the upper tubular valve rod 826 to the side is formed in the upper recess 82.
Connect to 5 '. On the other hand, when the leg pieces 824 are lowered, the upper tubular valve rod 826 is also lowered, the lower tubular valve rod 840 that is in contact therewith is also lowered, and the lower portion of the lower valve 837 is lower than the lower concave portion 834. Touch. At this time, the lower tubular valve rod 84
The lower recess 834 through a hole that communicates from the inside of 0 to the side.
And the inside of the lower tubular valve rod 840 communicate with each other. In such a state, the air from the compressor is compressed by the compressor connecting portion 839, the lower recess 834, the lower valve 837,
Lower tubular valve rod 840, upper tubular valve rod 826, upper valve 82
5, through the upper recess 825 'and the air supply port 823, the pressure is supplied to the accumulator tank 817. Further, when the leg pieces 824 are in the state shown in FIG. 8, the upper tubular valve rod 826 and the lower tubular valve rod 8 are provided.
Air is not supplied to the pressure accumulating tank 817 because each hole of 40 is closed by the leg 824 and the inner wall of the yoke 836. Therefore, the upper valve 825 and the lower valve 837 pass through the aforementioned holes (not shown) and the leg pieces 8
It opens when 24 is attracted downwards by electromagnet 833 and closes when leg 824 is not attracted. The air charger B as described above is attached to a unit of a treatment table (not shown).

In the apparatus having the above-mentioned structure, the doctor extracts the hoseless spray A from the receiving portion 831 in order to perform treatment. Then, the doctor inserts the injection pipe 818 of the hoseless spray A into the affected area, and then pushes the pusher 814 with his thumb. When the pusher 814 is pushed, the on-off valve 813 opens, and the compressed air accumulated in the pressure accumulating tank 817 passes through the pressure regulator 821 and the air supply pipe 820 and enters the chemical liquid container 811. When the air pressure in the liquid medicine container 811 increases, the liquid medicine is sprayed from the tip of the injection pipe 818 to the affected area through the suction pipe 819 and the spraying unit 816. When the treatment by spraying is completed, the doctor inserts the hoseless spray A into the receiving portion 831. A sensor 832 provided on one side of the receiving portion 831 detects the hoseless spray A,
A current is passed through the electromagnet 833. As a result, the electromagnet 83
The third yoke 836 attracts the leg pieces 824 of the hoseless spray A which are magnetized and made of a magnetic material together with the hoseless spray A. When the leg piece 824 is sucked downward,
As described above, the upper valve 825 and the lower valve 837 open. As a result, the air sent from the compressor (not shown) is supplied to the compressor connecting portion 839 and the lower valve 8
37, the upper valve 825 and the air supply port 823 to enter the accumulator tank 817. After that, after a certain period of time,
The pressure in the accumulator tank 817 increases and reaches a constant pressure. On the other hand, the timer is operated when it is detected that the hoseless spray A is inserted into the receiving portion 831, and the timer is stopped when a certain period of time elapses thereafter. This timer is not shown in the figure. Stop the air supply from. And the accumulator tank 817
The pressure inside the valve works in a direction to push down the upper valve 825, and prevents compressed air from escaping from the pressure accumulating tank 817. In this way, when one treatment is completed and the hoseless spray A is inserted into the receiving portion 831, preparation is automatically performed for the next treatment.

[0007]

However, the hoseless spray A in the above-mentioned conventional example has a long length and a weight because the leg 824 made of a magnetic material is provided in the lower portion of the accumulator tank 817. Has a problem that it becomes heavy. The weight and length of the legless piece 824 of the hoseless spray A not only makes it difficult for the doctor to handle, but also increases fatigue. Further, the air charger B in the conventional example includes the electromagnet 833, the coil 835, and the yoke 8.
There is a problem that 36 not only makes the equipment large, but also makes it expensive equipment.

In order to solve the above problems, it is an object of the present invention to provide a medical hoseless spray which is small in size, lightweight and easy to handle. Another object of the present invention is to provide an air charger for a medical hoseless spray, which has a simple structure and is inexpensive.

[0009]

In order to achieve the above-mentioned object, the medical hoseless spray of the present invention and its air charger are focused on that heavy and long leg pieces are not required. (First Invention) A medical hoseless spray according to the present invention comprises a pressure storage tank having a pressure regulator for adjusting the output pressure of compressed air and a pressure opening / closing valve for opening / closing the compressed air, and a liquid medicine by the pressure of the pressure storage tank. A liquid medicine container that can be sent to the spraying section, and an upper pressurizing valve (2 in FIG. 2) provided in the lower part of the accumulator tank.
4) which has the above-mentioned upper valve for pressurization (24)
Is an upper recess (246 in FIG. 3) formed in the bottom of the accumulator (211 in FIGS. 2 and 3), and an upper tubular valve that moves up and down in the upper recess (246) and projects toward the outside. And a rod (241 in FIG. 2).

(Second Invention) Medical hoseless of the present invention
The air charger in the spray is a pressure storage tank (211) having a pressure regulator for adjusting the output pressure of the compressed air and a pressure opening / closing valve for opening and closing the compressed air, and the chemical solution to the spraying section by the pressure of the pressure storage tank (211). Air is supplied to a medical hoseless spray having a liquid medicine container that can be sent and an upper pressurizing valve (24) provided at the bottom of the accumulator tank (211), and a hoseless spray is attached. At this time, a socket (22 in FIGS. 2 and 3) capable of supplying air from the pressurizing upper valve (24) to the accumulator tank (211) and the accumulator tank (21).
1) and the socket (22) for pressure adjustment space (29 in FIGS. 2 and 3), and a negative pressure mechanism (FIG. 1) for making the pressure adjustment space (29) negative pressure. 1, 2,
3) and the negative pressure mechanism (1, 2, 3) while making the pressure adjusting space (29) negative pressure, the accumulator tank (21).
Positive pressure mechanism (5, 6 in FIG. 1) that opens the valve (1) (24, 25 in FIG. 2) and supplies air to the accumulator tank (211).
Composed of and.

(Third Invention) Medical hoseless of the present invention
Negative pressure mechanism of air charger (1,
2, 3) are configured such that the pressure adjusting space (29) and the negative pressure tank (2 in FIG. 1) are connected to each other via the opening / closing valve (3 in FIG. 1).

(Fourth Invention) The medical hoseless of the present invention
Sockets for air chargers in sprays (22)
Is configured to include a pressure accumulation tank locking device (61 in FIGS. 6 and 7) that locks with the pressure accumulation tank (211) by the negative pressure of the pressure adjusting space (29).

(Fifth Invention) The medical hoseless of the present invention
The controller of the air charger in the spray detects a presence of the accumulator tank (211) and operates a switch for operating the negative pressure mechanism (1, 2, 3) and a positive pressure mechanism (5, 6) and a timer for stopping. Is equipped with.

[0014]

[Work]

(First Invention) The pressurizing upper valve of the medical hoseless spray according to the present invention is provided from the upper recess formed in the bottom of the accumulator tank toward the outside. And, for example, if the doctor does not use the medical hoseless spray, the medical hoseless spray is installed in the socket. At this time, the inside of the socket has a negative pressure, so that the medical hoseless spray is drawn downward. When the medical hoseless spray is pulled downwards, the valve of the upper tubular valve rod opens, which supplies air into the accumulator tank. Therefore, since the upper tubular valve rod does not require leg pieces made of magnetic material, a compact, lightweight, short-length medical hoseless spray has been realized. And the doctor
When this medical hoseless spray is used for treatment, its handling is good and fatigue is reduced.

(Second Invention) In the air charger for a medical hoseless spray according to the present invention, when the medical hoseless spray is attached to the socket, air is supplied from the pressurizing upper valve into the accumulator tank. At this time, a pressure adjusting space is formed between the accumulator tank and the socket. The pressure adjusting space is connected to a negative pressure mechanism including, for example, a pump and a valve in order to make this portion a negative pressure. The negative pressure mechanism opens the valve of the accumulator tank while the negative pressure is being applied to the pressure adjusting space so that air is supplied to the accumulator tank. The positive pressure mechanism is composed of, for example, a compressor,
Air is supplied into the accumulator tank through the valve. Therefore, only by providing the negative pressure mechanism, a heavy and long leg piece, an electromagnet, a coil, a yoke, and the like are unnecessary, and the structure is simplified.

(Third Invention) The pressure adjusting space formed between the pressure accumulating tank and the socket is connected to the negative pressure tank via, for example, a negative pressure connecting pipe and an opening / closing valve. The pressure adjusting space always has a negative pressure at the moment when it is connected to a negative pressure tank having a predetermined negative pressure. Therefore, by providing the negative pressure tank, the valve for supplying air can be opened and closed promptly.

(Fourth Invention) Since the medical hoseless spray accumulates pressure due to high pressure, it is necessary to prevent it from jumping out of the socket during pressure accumulation. for that reason,
While air is supplied to the pressure adjusting space under negative pressure, the accumulator tank locking device also locks the accumulator tank to ensure safety.

(Fifth Invention) A control device for an air charger in a medical hoseless sprayer receives a signal from a sensor to operate a negative pressure mechanism and a positive pressure mechanism. That is, when the medical treatment is completed by the doctor and the sensor detects this when the medical hoseless spray is attached to the socket, the switch provided in the control device is closed to operate the compressor,
A negative pressure valve connects the negative pressure tank and the pressure adjusting space. Further, the control device is provided with a timer which operates so as to open the switch at a time determined thereafter by the capacities of the accumulator tank and the compressor. Therefore, the air charger in the medical hoseless spray of the present invention can reliably supply a predetermined amount of air to the medical hoseless spray even though it is a simple control device.

[0019]

EXAMPLE FIG. 1 is a block diagram for explaining the concept of supplying air to a medical hoseless spray according to an example of the present invention. In FIG. 1, a system for supplying air to an air charger includes a negative pressure generating pump 1 for making a pressure adjusting space formed between a pressure accumulating tank and a socket, which will be described later, negative pressure, and the negative pressure generating pump 1. A negative pressure tank 2 that can maintain a predetermined negative pressure state by the generation pump 1, a valve 3 that connects the negative pressure tank 2 and a negative pressure portion 4 in a socket described later, and the valve 3 is connected to the negative pressure tank 2. The pressure adjusting space that becomes negative pressure when connected, that is, the negative pressure portion 4 in the socket, the positive pressure generating pump 5 that supplies air to the pressure accumulating tank, the positive pressure generating pump 5, and the later-described pressure accumulating pressure. A valve 6 for connecting the tank 7, a pressure accumulating tank 7 for accumulating air pressure for spraying a liquid medicine from a medical hoseless spray, and a sensor for detecting the accumulating tank 7 when the medical hoseless spray is attached to a socket. 8 and this By detecting the accumulator tank 7 by the sensor 8, a negative pressure generating pump 1 and positive pressure generation pump 5 and negative pressure tank 2
And a valve 3 which connects the negative pressure portion 4 in the socket to the operation, and a control device 9 which detects and controls the pressure of the negative pressure tank 2.

From the start of treatment of the medical hoseless spray until the air in the accumulator tank reaches a predetermined pressure will be described in order of (1) to (9) in FIG. (1) Before starting treatment with the medical hoseless spray, the switch of the control device 9 is turned on to operate the negative pressure generating pump 1. (2) The negative pressure generating pump 1 is, for example, a negative pressure generating compressor (not shown), and makes the inside of the negative pressure tank 2 have a predetermined negative pressure state. (3) A sensor (not shown) is provided inside the negative pressure tank 2, and when the inside of the negative pressure tank 2 reaches a predetermined negative pressure, a signal to that effect is sent to the control device 9. And
By detecting the negative pressure state by the sensor 8 of the negative pressure tank 2, the control device 9 knows that preparation for starting the treatment with the medical hoseless spray is completed. (4) The state where the pressure accumulating tank 7 is attached to the socket 22 is detected by the sensor 8. (5) The detection signal of the accumulator tank 7 by the sensor 8 is transmitted to the control device 9. (6) The control device 9 operates the positive pressure generating pump 5, for example, a compressor for positive pressure generation (not shown) by the signal of the sensor 8 and operates the negative pressure tank 2, the accumulator tank 7 and the socket 22. The valve 3 for connecting with the negative pressure portion 4 in the socket, which is a space for pressure adjustment formed therebetween, is opened. (7) When the valve 3 is opened, the negative pressure portion 4 inside the socket, which is a pressure adjusting space formed between the pressure accumulating tank 7 and the socket 22, becomes negative pressure. (8) When the negative pressure portion 4 in the socket becomes negative pressure, the valve 6 between the accumulator tank 7 and the positive pressure generating pump 5 is opened. (9) By opening the valve 6, the air pressure of the positive pressure generating pump 5 passes through the valve 6 and is accumulated in the accumulator tank 7. Then, the control device 9 stops the operation of the positive pressure generating pump 5 when a predetermined time elapses by the timer provided therein. In this way, the medical hoseless spray with the compressed air in the accumulator tank 7 is lifted by the doctor's hand and the necessary treatment is given to the patient. After treatment is complete, the medical hoseless spray is returned to the socket. At this time, when the sensor 8 detects this, the process returns to (4) and the same operation is repeated.

FIG. 2 is a view showing a part of an air charger and a pressure accumulating tank for explaining one embodiment of the present invention. FIG. 3 is an enlarged view of a part of FIG. 2 and 3, the air charger in the medical hoseless spray is an accumulator tank 211 (7 in FIG. 1) of the spray section 21, a part of which is not shown.
A socket 22 for mounting a base 22, a base 23 to which the socket 22 is mounted, an upper pressure valve 24 attached to the accumulator tank 211, a lower pressure valve 25 attached to the base 23 side, A negative pressure connecting pipe 26 communicating with the inside of the socket 22, a compressor connecting portion 27 for supplying air into the accumulator tank 211 through the pressurizing upper valve 24 and the pressurizing lower valve 25, the socket 22 and the accumulator tank 211. A negative pressure valve 28 (3 in FIG. 1) connected to a negative pressure tank (2 in FIG. 1) for making a negative pressure between the negative pressure tank and a pressure adjusting space forming a negative pressure portion by the pressure accumulation tank 211 and the socket 22. 29 (4 in FIG. 1).

A part of the spray section 21 includes a pressure storage tank 211 for maintaining a predetermined air pressure for spraying the chemical liquid, a chemical liquid container 212 for storing the chemical liquid in the pressure storage tank 211.
A suction pipe 213 for sucking up the liquid medicine in the liquid medicine container 212;
An air supply port 214 for supplying air to the pressure storage tank 211, and a pressure storage tank bottom portion 215 forming the air supply port 214.
And a pressure accumulation tank seal portion 216 that seals the pressure accumulation tank 211 and an upper valve support portion 245 described later. Then, in the same manner as the conventional example shown in FIG. 8, in the medical hoseless spray, by pressing the pusher, the chemical liquid is sprayed from the injection pipe.

The socket 22 includes a lower pressure valve 25 to be described later.
A bottom portion 221 having a hole through which the sliding, an upper socket sealing portion 222 that seals between the accumulator tank 211 and the socket 22, and a lower side that seals between the socket 22 and a lower tubular valve rod 251 described later. Socket seal part 22
3, an opening 224 formed in the socket 22 for connecting a negative pressure connection pipe 26, which will be described later, and a negative pressure connection pipe fixing portion 225 for fixing the negative pressure connection pipe 26.

The base 23 has a socket recess 231 for fixing the socket 22 and a compressor connecting portion 2 which will be described later.
7, a lower opening 232 for connecting 7 and a base seal 23 for sealing the compressor connection 27 and the base 23.
3 and 3. Further, the lower opening 232 is provided with a lower recess 234 formed by a lower tubular valve rod 251 and a compressor connecting portion 27, which will be described later.

The pressurizing upper valve 24 includes, for example, an upper tubular valve rod 241 having a T-shape, an upper valve seat 243 provided in a lower portion of the accumulator tank 211 for mounting the upper tubular valve rod 241 and the upper valve valve 243. The valve seat 243 and the upper tubular valve rod 2
41, an upper valve seal portion 242 that seals between the upper tubular valve rod 41, an upper opening valve 244 formed at the base of the T-shaped portion of the upper tubular valve rod 241, and an upper valve support portion 245 that supports the upper tubular valve rod 241. , An upper recess 246 which communicates with the air supply port 214 and is formed by the upper valve support 245 and the upper tubular valve rod 241 to form a space. The upper tubular valve rod 241 is shown enlarged in FIGS. 4 and 5. FIG. 4 is a view showing an upper opening valve in the upper tubular valve rod. FIG. 5 is a sectional view of the upper tubular valve rod. Figure 4
In FIG. 5 and FIG. 5, the upper tubular valve rod 241 has, for example, a T shape, and at the root of the T shape, as shown in FIG. An opening valve 244 is formed. Further, the upper valve seal portion 242 formed in the T-shape portion closes the upper opening valve 244 when in contact with the upper valve seat 243,
When it is separated from the upper valve seat 243, the upper opening valve 2
Open 44. A part of the tip of the upper tubular valve rod 241 projects from the upper valve seat 243.

The pressurizing lower valve 25 comprises an inverted T-shaped lower tubular valve rod 251 and a lower valve seal portion 252 formed on the lower tubular valve rod 251. The lower tubular valve rod 251 has substantially the same structure as the upper tubular valve rod 241. The lower tubular valve rod 251 is inserted upward from the lower portion of the socket 22, and a part of the lower tubular valve rod 251 is protruded to form the upper tubular valve rod 251. Rod 24
It is in contact with the tip of 1. The lower tubular valve rod 251
Has the same structure as the upper tubular valve rod 241 shown in FIGS. 4 and 5.

The air charger having the above structure is
Before starting treatment with the medical hoseless spray, a switch (not shown) is turned on. When the switch is turned on, a negative pressure generating pump (not shown) such as a compressor is operated. The negative pressure generating pump causes a negative pressure tank (not shown) to have a predetermined negative pressure inside. When the negative pressure state in the negative pressure tank reaches a predetermined negative pressure, the medical hoseless spray is ready for treatment. The state where the accumulator tank 211 is attached to the socket 22 is the sensor 226 shown in FIG.
Detected by. The pressure accumulation tank 211 is detected by the sensor 226, and this detection signal operates the positive pressure generating pump 5 (not shown) and opens the negative pressure valve 28 that connects the negative pressure tank 2 and the pressure adjusting space 29. . By opening the negative pressure valve 28, a negative pressure tank (not shown), a negative pressure pipe 281, a negative pressure valve 28, a negative pressure connection pipe 26, and a space between the pressure accumulation tank 211 and the socket 22 are formed. The pressure adjusting space 29 is connected.

When the pressure adjusting space 29 between the accumulator tank 211 and the socket 22 becomes negative pressure, the accumulator tank 211
Are attracted to the bottom of FIGS. 2 and 3. As a result, the upper portion of the upper tubular valve rod 241 and the upper portion of the upper concave portion 246 contact each other, and a gap is formed between the upper tubular valve rod 241 and the upper valve seat 243. Since the position of the upper opening valve 244 of the upper tubular valve rod 241 corresponds to the portion where this gap is formed, the inside of the upper tubular valve rod 241 and the upper recess 2
46 communicates with. At the same time, the upper portion of the upper tubular valve rod 241 and the upper valve support portion 245 contact each other, and the upper tubular valve rod 241
Moves downwards. The downward movement of the upper tubular valve pipe 241 causes the lower tubular valve rod 251 to move downward and come into contact with the compressor connecting portion 27. Thereby, the lower valve seal portion 252 and the socket bottom portion 221 of the lower tubular valve rod 251 are provided.
There is a gap between Due to the gap, the lower recess 2
34 communicates with the inside of the lower tubular valve rod 251.

As described above, the air from the compressor (not shown) is supplied to the compressor connecting portion 27,
Lower recess 234, lower tubular valve rod 251, upper tubular valve rod 2
41, the upper recess 246, and the air supply port 214, respectively, to supply the pressure accumulation tank 211. Then, after the sensor 226 provided in the socket 22 detects the accumulator tank 211, after a certain time has passed, that is, the accumulator tank 21.
The negative pressure valve 28 is closed by the timer of the control device (not shown) after the predetermined air has been accumulated in 1. Negative pressure valve 2
By closing 8 the pressure adjusting space 29 becomes atmospheric pressure. Therefore, the upper tubular valve rod 241 is connected to the accumulator tank 2
It is pushed by the internal pressure of 11 and moves in the closing direction, and the accumulated air does not leak. Further, when air is accumulated in the pressure accumulating tank, the pressure adjusting space 29 becomes atmospheric pressure, so that the medical hoseless spray provided with the pressure accumulating tank 211 can be easily lifted up and treated. The medical hoseless spray that has been treated is mounted in the socket 22 again.
Subsequent operations are repeated as described above.

FIG. 6 is a diagram for explaining another embodiment of the present invention. FIG. 7 is a partially enlarged view of FIG. 6 and 7, the difference from the embodiment in FIGS. 2 and 3 lies in the presence or absence of the accumulator tank locking device. That is, the accumulator tank locking device 61 is attached to one side of the socket 22. Accumulation tank locking device 61
Is a cylindrical housing 62 for mounting on one side of the socket 22, a piston 63 that slides inside the housing 62, a piston mounting member 64 that prevents the piston 63 from coming off, and a piston mounting member 6
4, and a spring member 65 inserted between the piston 63 and the piston 63. A piston locking portion 66 with which the tip of the piston 63 is engaged is formed around the lower portion of the pressure accumulating tank 211. Further, an air hole 621 that allows the housing 62 to communicate with the atmosphere, and a space 622 that allows the pressure adjusting space 29 and the housing 62 of the accumulator tank locking device 61 to communicate with each other are provided. With such a configuration, when the pressure adjusting space 29 has a negative pressure, the piston 63 of the pressure accumulating tank locking device 61 is locked to the piston locking portion 66, and the inside of the pressure accumulating tank 211 becomes a high pressure. If this happens, make sure that the medical hoseless spray does not jump out of the socket. Then, when the pressure in the pressure adjusting space 29 becomes atmospheric pressure, the tip of the piston 63 is released from the locked state of the piston locking portion 66 by the force of the spring member 65, and the medical hoseless spray is provided. Can be taken out easily.

Although the present embodiment has been described in detail above, the present invention is not limited to this embodiment. Various design changes can be made without departing from the present invention described in the claims. For example, in the embodiment, the pressure adjusting space is connected to the negative pressure tank via the negative pressure valve, but it is also possible to omit the negative pressure valve and the negative pressure tank and directly connect to the negative pressure generating pump. . In this case,
The time required to reach a predetermined negative pressure in the pressure adjusting space is only slightly slower. The structure of the medical hoseless spray and the structure of the pressurizing upper valve and pressurizing lower valve are
It goes without saying that it may be replaced with another known one. Further, in the present embodiment, the air pressure in the accumulator tank is controlled by the timer, but it is also possible to detect the pressure applied to the pressurizing upper valve and stop the operation of the compressor by the detection signal.

[0032]

As described in detail above, according to the present invention,
Since the valve provided in the accumulator tank does not require leg pieces made of magnetic material, a compact, lightweight, and short length medical hoseless spray has been realized. Further, since the air charger in the medical hoseless spray does not require the electromagnet, the coil and the yoke, the structure is simple and the cost is low. In addition, the safety device that keeps the medical hoseless spray from popping out of the socket uses negative pressure, resulting in a simple and reliable device that does not require a special power supply.

[Brief description of drawings]

FIG. 1 is a block diagram for explaining the concept of supplying air to a medical hoseless spray according to an embodiment of the present invention.

FIG. 2 is a diagram showing a part of an air charger and a pressure accumulating tank for explaining an embodiment of the present invention.

FIG. 3 is an enlarged view of part of FIG.

FIG. 4 is a view showing an upper opening valve in an upper tubular valve rod.

FIG. 5 is a sectional view of an upper tubular valve rod.

FIG. 6 is a diagram for explaining another embodiment of the present invention.

7 is a partially enlarged view of FIG.

FIG. 8 is a view for explaining a medical hoseless spray and its air charger.

[Explanation of symbols]

 1 ... Negative pressure generation pump 2 ... Negative pressure tank 3 ... Negative pressure valve 4 ... Negative pressure part in socket 5 ... Positive pressure generation pump 6 ... Positive pressure valve 7 ... Accumulation tank 8 ... Sensor 9 ... Control device 21 ... Spray part 22 ... Socket 23 ... Base 24 ... Pressurizing upper valve 25 ... Pressurizing lower valve 26 ... Negative pressure connection pipe 27 ... Compressor connection part 28 ... Negative pressure valve 29 ... Pressure adjusting space

Claims (5)

[Claims] 1. A pressure accumulation tank having a pressure regulator for adjusting the output pressure of the compressed air and a pressure opening / closing valve for opening / closing the compressed air, and a chemical liquid container capable of sending the chemical liquid to the spraying section by the pressure of the pressure accumulation tank. In a medical hoseless spray having a pressurizing upper valve provided in a lower portion of the pressure accumulating tank, the pressurizing upper valve moves up and down in an upper concave portion formed in a bottom portion of the accumulator tank. , Bulge towards the outside
A medical hoseless spray characterized in that it is composed of an upper tubular valve rod that emerges . 2. A pressure accumulation tank having a pressure regulator for adjusting the output pressure of the compressed air and a pressure opening / closing valve for opening / closing the compressed air, and a chemical liquid container capable of sending the chemical liquid to the spraying section by the pressure of the pressure accumulation tank. In an air charger that supplies air to a medical hoseless spray having an upper pressure valve provided at the bottom of the accumulator tank, when the hoseless spray is attached, air is supplied from the upper pressurizing valve to the accumulator tank. A socket that can be supplied, a pressure adjusting space formed between the accumulator tank and the socket, a negative pressure mechanism for making the pressure adjusting space a negative pressure, and the negative pressure mechanism is the pressure adjusting space. A positive pressure mechanism that opens the valve of the accumulator tank while supplying negative pressure to supply air to the accumulator tank, and a medical hoseless spray characterized by Kicking air charger. 3. The air charger for a medical hoseless spray according to claim 2, wherein in the negative pressure mechanism, a pressure adjusting space and a negative pressure tank are connected via an on-off valve. 4. The pressure-accumulation tank locking device that locks the pressure-accumulation tank with the negative pressure of the pressure adjusting space, wherein the socket includes a pressure-accumulation tank locking device.
Air charger for the described medical hoseless spray. 5. A control device comprising a switch for operating the negative pressure mechanism and the positive pressure mechanism by sensing the presence of the pressure accumulating tank and a timer for stopping the switch. Air charger for medical hoseless spray.