JP2000262617A - Device for treating used injection needle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly execute melting regardless of the size of a needle diameter by equipping a capacitor for storing a utility power source, a charging circuit for storing electricity in the capacitor and positive and negative electrodes for discharging electricity stored in the capacitor, short-circuiting the both electrodes by a used injection needle and melting the needle by means of resistance heat owing to a discharge current. SOLUTION: This device is the one for melting and treating the used injection needle, the utility power source 8 is efficiently stored in the capacitor 2 by the charging circuit 1 and electricity stored in the capacitor 2 is prevented from reversely flowing to the circuit 1 by a diode 5. Then a current limiting circuit 3 is arranged between the plus terminal of the capacitor 2 and the plus electrode 4-a of an electrode unit 4, and the minus terminal of the capacitor 2 is connected to the minus electrode 4-b of the unit 4. A treatment needle 9 is kept by the plus electrode 4-a, electricity in the capacitor 2 is discharged when the needle 9 is put on the minus electrode 4-b, and the needle is melted by the sum of heat resistance between the both electrodes 4-a and 4-b and by heat of arch discharge which occurs on the joint surface of the tip of the needle 9 with the minus electrode 4-b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to an apparatus for melting a used injection needle in a medical institution.

2. Description of the Related Art Conventionally, as a device of this type, a commercial power supply is converted to a low voltage by a large-current transformer, and the output of the transformer is melted by a short-circuit current when a short-circuit is caused by a used injection needle. Various types have been put to practical use.

[Problems to be Solved by the Invention] Since the above-mentioned conventional processing device is composed of a large current transformer,
There was a disadvantage that the shape became large.

Further, since a commercial power supply is used directly, there is a drawback that it cannot be used in places other than a place where power supply equipment is provided.

[0005] Further, the conventional product has a disadvantage that it must be periodically replaced because a deodorant is used for deodorizing odors during treatment.

In order to solve the above-mentioned problems of the prior art, the present invention provides a processing apparatus for a used injection needle which stores electricity of a commercial power supply in a storage device and melts the injection needle with a discharge current of the stored electricity. It will not be provided.

[Means for Solving the Problems] In order to solve the problems of the above-mentioned prior art, the present invention aims to solve the problem by storing a commercial power supply, a charging circuit for storing the power in the battery, and a storage circuit in the battery. Discharge electricity (+) (-) 2
Claim 1 is characterized in that it is constituted by electrodes of different types, and by short-circuiting both electrodes with a used injection needle, the needle is melted by resistance heat due to a discharge current of electricity stored in the battery. .

[0008] Further, a current limiting circuit is formed between one of the output portions of the electric storage device of the processing device and the electrode, and the current limiting circuit is configured to melt with a current optimal for the diameter of the processing needle. Things.

In the electrode of the above-mentioned processing apparatus, the electrode with which the tip of the injection needle comes in contact is a (-) electrode, and the (-) electrode has a heat capacity ten times or more that of the processing needle. This is defined as claim 3.

[0010] According to a fourth aspect of the present invention, the electrode material of the processing apparatus is made of copper and a copper alloy.

[0011] Further, the processing device using a secondary battery as a storage battery is defined as claim 5.

[0012] Further, the processing device in which an electric double layer capacitor is used for the electric storage device is defined as claim 6.

[0013] Further, the processing apparatus of the present invention is characterized in that the odor during processing is deodorized with ozone gas.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings, together with its operation. FIG. 1 is a block diagram of the circuit of the present invention.

The commercial power supply (8) is efficiently stored in the battery (2) by the charging circuit (1). The diode (5) is for preventing the electricity stored in the battery (2) from flowing back to the charging circuit (1). The charging circuit (1) is a circuit that converts an AC power supply into a DC power and controls the voltage and the current to be optimal for storing power in the battery (2).

A current limiting circuit (3) between the (+) terminal of the battery (2) and the (+) electrode (4-a) of the electrode unit (4).
Is provided, and the (-) terminal of the battery (2) is connected to the (-) electrode (4-b) of the electrode unit (4). The current limiting circuit (3) is a circuit for supplying a current suitable for melting the processing needle. When the melting current is small, the melting is incomplete, and when the current is large, there is a problem that the life of the electrode is shortened.

The processing needle (9) is held by the (+) electrode (4-a), and when pressed against the (-) electrode (4-b), the electricity of the battery (2) is discharged and the (+) electrode (4-a) is discharged. 4-a) and the thermal resistance between the (-) electrode (4-b) and the heat generated by the arc discharge generated at the joint surface between the tip of the processing needle (9) and the (-) electrode (4-b). And the sum of

At the time of arc discharge, electrons flow from the cathode to the anode, and the anode side becomes hotter than the cathode side.
By making b) much larger than the capacity of the processing needle (9), heat generation of the (-) electrode (4-b) is reduced.

The (-) electrode (4-b) and the (+) electrode (4
-The material of a) uses copper and copper alloy.

When a secondary battery is used for the battery (2),
High-capacity products such as lead batteries, nickel-cadmium batteries, and nickel-metal hydride batteries are suitable. When these secondary batteries are used, they can be used in places without power supply facilities. In addition, since the electric power stored in the electric storage device (2) is charged with a small current, the size of the transformer can be reduced.

The output of the storage battery (2) is connected to an ozone gas generating circuit (6) for decomposing odors at the time of processing and a fan (7) for decomposing odors and returning fresh air.

[Effects of the Invention] Therefore, in the present invention, it is possible to share the use of the commercial power supply and the portable use, and it is possible to reduce the size when the commercial power supply is used. In addition, it is possible to uniformly melt regardless of the size of the needle diameter.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Charging circuit 2 Electric storage 3 Current limiting circuit 4 Melting electrode unit 4-a + electrode 4-b-electrode 5 Diode 6 Ozone generation circuit 7 Fan 8 Commercial power supply 9 Processing needle

Claims (7)

[Claims] 1. A battery for storing a commercial power supply, a charging circuit for storing the battery, and discharging the electricity stored in the battery.
(-) Constituted by two kinds of electrodes, wherein both electrodes are short-circuited by a used injection needle, so that the needle is melted by resistance heat due to a discharge current of electricity stored in the battery; Processing device for used needles. 2. A battery according to claim 1, wherein a current limiting circuit is formed between any one of the output portions and the electrodes, and the current limiting circuit is configured to melt with a current optimal for the diameter of the processing needle. Processing device for used needles. 3. The electrode according to claim 1, wherein the tip of the injection needle contacts the (-) pole, and the (-) pole has a heat capacity 10 times or more that of the processing needle. A processing device for a used injection needle, characterized in that: 4. An apparatus according to claim 1, wherein said electrode material is made of copper and a copper alloy. 5. A processing apparatus for a used injection needle, wherein a secondary battery is used for the battery according to claim 1. 6. A processing apparatus for a used injection needle, wherein an electric double layer capacitor is used for the electric storage device according to claim 1. 7. A processing apparatus for a used injection needle according to claim 1, wherein an odor during processing is deodorized by ozone gas.