JP3323362B2 - Medical hoseless spray device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoseless spray device for medical use, and more particularly to a method for supplying compressed air into a pressure accumulating tank of a sprayer by inserting a sprayer as a sprayer into a socket of an air charger as a pressure source. The present invention relates to a medical hoseless spray device that sprays a chemical solution by accumulating compressed air in a pressure accumulating tank by removing a spray from a socket during use.

[0002]

2. Description of the Related Art A conventional medical hoseless spray device uses, for example, a magnet type as a method of fitting the spray to a socket of an air charger so that compressed air can be supplied into a pressure accumulating tank of the spray. I have.

The magnet type is disclosed in, for example,
As disclosed in Japanese Patent No. 224666, the spray is lowered by the attractive force of a magnet acting between the spray and the socket, and the two are fitted together. That is, an iron core is provided at the tip of the spray, and an electromagnet is provided at the lower end of the socket.

With this configuration, when a current is passed through the electromagnet,
When the iron core at the tip of the spray is magnetized and a suction force is applied, the spray descends and the spray and the socket are fitted. As a result, a predetermined valve mechanism is opened, and compressed air is supplied to the spray accumulator tank via the valve mechanism.

[0005]

The conventional medical hoseless spray device has the following problems.

(1) An impulsive sound is generated. The iron core and the electromagnet constituting the magnet type are both formed of metal. Therefore, when the spray and the socket are fitted, the iron core and the electromagnet abut against each other, generating a loud impact sound peculiar to metal. This can surprise and discomfort the patient.

(2) It is dangerous. Also, the conventional magnet type uses an electromagnet below the socket,
The chemical solution leaks and adheres to the electromagnet, corrodes the coil, and may cause an electric shock to a doctor or a patient due to the leak. That is, in the conventional magnet type, there is a risk of electric leakage due to such leakage of the chemical solution.

(3) The chemical cannot be visually recognized. In the conventional magnet type, generally, the chemical solution container is provided in the pressure accumulating tank, so that the remaining amount of the chemical solution in the container cannot be visually recognized. For this reason, doctors often find out that there is not enough drug solution after starting to use the spray. (4) Heavy. Conventional sprays are heavy due to the use of iron at the tip, and their wrists become tired when used for a long time.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a medical hoseless spray device which does not generate an impact sound when a spray and a socket are fitted together, is safe even if a chemical solution leaks, and allows the remaining amount of the chemical solution to be easily visually recognized. To provide.

[0010]

SUMMARY OF THE INVENTION The above object is achieved by inserting a spray A having an accumulator tank A1 into a socket B of an air charger to compress compressed air into the accumulator tank A1.
Hoseless spray device for medical supplies
(1) a compressed air supply piston 130 which is provided at a lower portion in the socket B, rises by air pressure, comes into close contact with the tip of the spray A, and penetrates the compressed air to supply the compressed air into the accumulator tank A1; A) a spray locking piston 160 which is provided on a side portion in the socket B and moves to the vicinity of the spray A by air pressure and locks the spray A pushed up by the raised compressed air supply piston 130;
And (3) an electromagnetic coil 110 for detecting that the spray A is inserted, and (4) a spray provided by the compressed air supplied through the compressed air supply piston 130 provided at the top of the pressure accumulation tank A1. The chemical solution container 188 to be stored is stored in an exposed state, and the chemical solution container storing and sealing portion A2 for sealing the pressure accumulating tank A1 and (5) penetrating below the chemical solution container storing and sealing portion A2 and extending outward from the pressure accumulating tank A1. A medical hoseless spray device characterized in that it comprises a compressed air passage pipe 190 extending to the liquid medicine container 188 and allowing compressed air to pass therethrough.

[0011]

Therefore, the present invention has the following effects. (1) No loud impact noise is generated. According to the present invention, initially, the spray locking piston 160 only moves to the immediate vicinity of the spray A by air pressure, and does not directly hit the spray A. There is no loud impact sound that surprises and discomforts the patient.

(2) It is safe. The present invention is not an electromagnet, but includes a compressed air supply piston 130 and a spray locking piston 160, both of which are operated by pneumatic pressure.
It is safe.

(3) It is easy to visually check the remaining amount of the chemical solution. According to the present invention, unlike the prior art, a larger liquid medicine container housing / sealing portion A2 provided at the top of the pressure accumulating tank A1 and a compressed air passage pipe 190 disposed beside the medicine liquid container housing / sealing portion A2 have a larger size. Since the chemical solution container 188 can be stored in an exposed state, the remaining amount of the chemical solution can be easily visually recognized from the outside.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a detailed diagram showing an embodiment of the present invention.

1. Configuration As described above, the present invention relates to a medical hoseless spray device for supplying compressed air a into the pressure accumulation tank A1 by inserting the spray A having the pressure accumulation tank A1 into the socket B of the air charger.

As is well known, the spray A is a nebulizer for spraying a drug solution to an affected part, and a pressure accumulating tank A
1, and a pressure reducing valve 19 which cooperates with the pressure accumulating tank A1 as shown in FIG.
2. Compressed air passage pipe 190, nut 185, pusher 181, on-off valve 182, and connector 18 cooperating with chemical solution container 188 side housed in chemical solution container housing / closing section A2.
0, spray cap 186, spray unit 183, spray pipe 184,
Each is provided.

The pressure accumulating tank A1 has a hollow cylindrical shape as a whole.
It is integrally formed via a rubber O-ring 200 for sealing, and seals the pressure accumulation tank A1.

The cylindrical portion 194 above the bottom portion 187 of the chemical liquid container housing / sealing portion A2 is in contact with the outside air, and
Since 88 can be stored in an exposed state, the remaining amount of the chemical solution can be easily visually recognized. That is, usually, the drug solution container 1
88 is made of a transparent plastic or the like, and if it is stored in an exposed state, the inside liquid medicine can be seen well and the remaining amount can be easily visually recognized.

Further, as shown in the right side of FIG. 1, for example, by forming three openings 189 in the cylindrical portion 194, the remaining amount of the chemical solution can be more visually recognized.

An opening 193 is formed on the back surface of the bottom portion 187 of the chemical liquid container housing / sealing portion A2, and a pressure reducing valve 192 is fixed, and a compressed air passage pipe 190 is connected to the pressure reducing valve 192. .

The compressed air passage pipe 190 is a pipe through which the compressed air b decompressed by the pressure reducing valve 192 passes, and communicates with the chemical solution container 188, and is connected to the accumulator tank A1.
Inside, as shown, it extends diagonally upward and has a bottom 187.
, And extends vertically upward along the cylindrical portion 194 after passing through the through hole 191 formed at the position.

As described above, the compressed air passage pipe 190
Not in the pressure accumulating tank A1, but in the sealed section A2
, It is possible to increase the size of the chemical solution container storage and sealing portion A2, and also increase the size of the chemical solution container 188 to be stored. In addition to the contribution, there is also a practical effect that the shape of the chemical solution container 188 is easy to make.

On the other hand, a valve mechanism 140 is screwed to the distal end of the accumulator tank A1 via a rubber O-ring 211 for sealing, and the valve mechanism 140 is a leaf spring-shaped valve fixed with a screw 142. 143, an opening 141, and a rubber O-ring 201 for sealing.

The valve mechanism 140 has a compressed air supply piston 130, which will be described later, in close contact with the tip of the spray A, as disclosed in a patent application filed on Nov. 19, 1994 by the present applicant. Then, the valve 143 is pushed and opened by the compressed air a penetrating through the piston 130, so that the compressed air a is supplied into the accumulator tank A1 through a supply port (not shown).

On the other hand, the air charger is a pressure supply source of the compressed air used in the spray A. When the above-described spray A is inserted into the socket B shown in the drawing, the pressure accumulation tank A1 of the spray A Is supplied with compressed air a.

The socket B comprises a cylindrical spray insertion guide B1 and a spray locking block B2 screwed to the spray insertion guide B1 from outside.

A sensor 110 is attached to the outside of the spray insertion guide B1 constituting the socket B, and detects that the spray A has been inserted into the socket B. The sensor 110 is formed of, for example, an electromagnetic coil, and is connected to a control unit (not shown) that controls the entire medical hoseless spray device according to the present invention.

The other spray locking block B2 constituting the socket B is composed of an upper block B21 and a lower block B22 which are integrally formed. The upper block B21 has a flat cylindrical shape. Block B
Reference numeral 22 denotes a column which is longer and thinner than that.

At the bottom of the first cavity 144 formed at the center of the upper block B21, a rubber O-ring 202 for sealing is provided as shown in the figure.
, The tip of the spray A inserted into the socket B is locked.

An elongated second cavity 170 is formed in the lower block B22 by the first cavity 144, and a piston 130 for supplying compressed air, which will be described later, is provided in the second cavity 170. Has a space 120 sealed by a cap 206 and communicates with a high-pressure generator 150 via a drive air port 121.

The compressed air supply piston 130 is formed by integrally forming an elongated first column 132 having a truncated conical tip and a second column 133 thicker and shorter than the first column 132. .

The first column 132 protrudes from the second cavity 170 and extends to the first cavity 144. A return coil spring 204 press-fitted into the second cavity 170 is wound.

The second column 133 is provided with a sealing rubber O-ring 203 on the outer periphery thereof in two stages. When the spray A is not inserted into the socket B (FIG. 1), The bottom portion is in contact with the cap 206 forming the closed space 120.

A T-shaped through hole 131 is formed in the compressed air supply piston 130 so as to straddle the first column 132 and the second column 133 as shown in FIG. When the pressure rises and the piston 130 rises and comes into close contact with the tip of the spray A (FIG. 2), the compressed air a sent from the high pressure generator 150 is caused to penetrate through the supply air port 122. It has become.

Further, a flat cylindrical upper block B21
A third cavity 171 that communicates with the first cavity 144 described above is formed on the inner side, and the third cavity 171 includes:
A spray locking piston 160 to be described later is provided, and a space 124 sealed by a cap 207 is formed behind the spray locking piston 160 as shown in the figure.

In the present embodiment, for example, three such closed space portions 124 are formed radially in the radial direction, and the spray A pushed up by the ascending compressed air supply piston 130 is sprayed three times. The spray A is locked from three directions by the two spray locking pistons 160 so that the spray A does not jump upward.

The closed space 124 is formed by the closed space 1
24, a supply port 123 formed in the
5 and a groove 146 surrounded by a sealing O-ring 208 and a high-pressure generator 150 via a drive air port (not shown).

The spray locking piston 160 is formed by integrally forming an elongated first column 162 and a flat second column 163 thicker and shorter than the first column 132. A return coil spring 209 is wound around 162, and a rubber O-ring 210 for sealing is provided on the outer periphery of the second column 163.

When the spray A is not inserted into the socket B, the spray locking piston 160 having such a structure has the second column 163 in contact with the cap 207 and the first column 162. Is coil spring 209
Is immersed in the third hollow portion 171 due to the restoring force.

However, when the spray A is inserted into the socket B and detected by the sensor 110, the high-pressure generator 150 supplies compressed air a, so that the pressure in the closed space 124 becomes high. The spray locking piston 160 is pushed out against the restoring force of the coil spring 209 so that the second column 163 abuts against the contact surface 147 of the third hollow portion 171, moves to a position immediately near the spray A, and stops. .

2. Operation The operation of the medical hoseless spray device according to the present invention having the above configuration will be described below.

(1) Detection of sensor 110 When spray A is inserted into socket B, socket B
Is detected by the sensor 110 and transmitted to a control unit (not shown).

(2) Movement of Spray Locking Piston 160 The control unit (not shown) that has received the detection signal operates the high-pressure generating device 150 after a certain period of time has elapsed.
The compressed air “a” is sent into the upper block B 21 through a drive air port (not shown) for the spray locking piston 160, and is supplied from the supply port 123 into the closed space 124 through the groove 146. .

As a result, the pressure in the closed space 124 becomes high, and the spray locking piston 160 that has been in contact with the cap 207 is pushed out against the restoring force of the coil spring 209 to be pushed out of the second column. The body 163 is the third hollow portion 17
Then, it comes into contact with the first contact surface 147, moves to the vicinity of the spray A, and stops.

(3) Lifting of the compressed air supply piston 130 The control unit (not shown), which detects that the spray locking piston 160 has stopped, returns to the high pressure generator 150 again.
, The compressed air “a” is supplied through the driving air port 121 to the closed space 120 of the lower block B22.
Supply to

As a result, the pressure in the closed space 120 becomes high, and the compressed air supply piston 130 which has been in contact with the cap 206 (FIG. 1) is restored to the coil spring 204 as shown in FIG. O-ring 2 of the valve mechanism 140 which rises against the force and is screwed to the tip of the spray A
It hits 01.

At this time, the compressed air supply piston 130
The T-shaped through-hole 131 formed at the bottom of the socket B faces the supply air port 122 formed at the lower block B22 of the socket B.

In this case, the spray A is pushed up by the upward force of the compressed air supply piston 130 and tends to protrude upward.

However, as shown in the figure, the spray locking piston 160 has moved to the vicinity of the spray A and stopped there, and has protruded from the third cavity 171 to the first cavity 144.

Therefore, the flange 148 of the spray tip abuts against the first column 162 of the projected spray locking piston 160, and the spray A is locked, and the spray A does not protrude upward.

(4) Supply of Compressed Air a into Accumulator Tank A1 In this state, the control unit (not shown) again operates the high-pressure generator 15
When the compressed air “a” is supplied through the supply air port 122 by actuating the compressed air “a”, the compressed air “a”
43 is pushed open to be supplied to the pressure accumulation tank A1.

(5) Return of the compressed air passage pipe 190 and the spray locking piston 160 As described above, the pressure in the accumulator tank A1 gradually increases due to the compressed air a supplied to the accumulator tank A1. However, the time when the pressure in the accumulator tank A1 and the pressure in the high-pressure generator 150 are equal is known in advance. Therefore, the control unit (not shown) stops the operation of the high-pressure generating device 150 after a certain time has elapsed from the first time the compressed air a is supplied into the accumulator tank A1.

As a result, the leaf spring-shaped valve 143 provided in the pressure accumulating tank A1 also closes the supply port (not shown) to seal the pressure accumulating tank A1.
24 returns to the original state, and the compressed air passage pipe 19
0 and the piston 160 for spray locking, the coil spring 20
Due to the restoring force of 4, 209, they come into contact with the caps 206, 207 and return to their original positions.

(6) Visual Recognition of Remaining Chemical Solution Further, the cylindrical portion 194 forming the sealed portion A2 for storing the chemical solution container.
When the chemical solution container 188 is viewed from above or through the opening 189, it is stored in an exposed state, so that the remaining amount of the chemical solution inside can be easily visually recognized.

(7) Injection of chemical solution After confirming the remaining amount of the chemical solution, when spray A is used,
Spray A in which compressed air a is filled in accumulator A
From the socket B and press the pusher 181 (FIG. 1),
The compressed air b decompressed by the pressure reducing valve 192 enters the chemical solution container 188 through the compressed air passage pipe 190,
The chemical is injected from the injection pipe 184.

[0056]

As described above, according to the present invention, a medical hoseless spray device does not generate an impact sound when a spray and a socket are fitted, and is safe even if a chemical solution leaks. Since the remaining amount can be easily visually recognized and the drug solution container can be easily made large, the technical effect of improving the treatment efficiency by prolonging the spraying time has been achieved.

[0057]

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a detailed view showing an embodiment of the present invention.

[Explanation of symbols]

 110 Sensor 130 Compressed Air Supply Piston 160 Spray Locking Piston 188 Chemical Liquid Container 190 Compressed Air Passing Pipe A Spray B Socket A1 Accumulator Tank A2 Chemical Liquid Container Storage Seal

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61M 11/02 B05B 9/04

Claims (1)

(57) [Claims] 1. A medical hoseless spray device for supplying compressed air into the pressure accumulator tank A1 by inserting a spray A having a pressure accumulator tank A1 into a socket B of an air charger, provided at a lower portion in the socket B, A compressed air supply piston 130 which rises by air pressure and comes into close contact with the tip of the spray A to supply the compressed air to the pressure accumulating tank A1 and is provided on a side portion in the socket B, and the spray A is provided by the air pressure. , A spray locking piston 160 for locking the spray A pushed up by the raised compressed air supply piston 130, an electromagnetic coil 110 for detecting that the spray A is inserted, and a pressure storage tank A1 is provided at the top of A1 and is supplied to the compressed air supplied through the compressed air supply piston 130. The container 188 of the sprayed chemical solution with housing in exposed state Ri,
A chemical liquid container storage / sealing portion A2 that seals the pressure accumulation tank A1, and compressed air that penetrates below the chemical liquid container storage / sealing portion A2, extends outward from the pressure accumulation tank A1, communicates with the chemical solution container 188, and allows compressed air to pass therethrough. A medical hoseless spray device comprising: a passage pipe 190.