JP2002011089A - Syringe needle treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a syringe needle treatment device that has a simple circuit and is improved in battery life while maintaining compactness and maneuverability and, further, has less noise by using electric double layer condenser as a power source. SOLUTION: This is a syringe needle treatment device 1 for sterilizing and melting treatment of the syringe needle and is equipped with a power source section 3 which generates electric current for Joule-heating the whole syringe needle. The power source section 3 has an electric double layer condenser 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection needle processing apparatus, and more particularly to an injection needle processing apparatus capable of processing used injection needles such as medical waste.

[0002]

2. Description of the Related Art Conventionally, an injection needle processing device includes a crusher,
Incineration or dissolution methods were used. Among them, in the crushing and incineration method, the equipment becomes large, so that it will be processed at a place away from the medical site,
Since it is necessary to collect medical waste such as injection needles, it has not been a fundamental solution to accidents such as accidentally sticking a used injection needle. As a solution to this, there is a dissolution method. This includes a method using a plasma arc as disclosed in JP-A-11-33065, a method using a high-frequency heating furnace as described in JP-A-11-82953, and a method as disclosed in JP-A-8-19658.
There is a method using a gas flame as disclosed in Japanese Patent Application Publication No. 0-205. Among them, the plasma arc method and the high-frequency heating method generate a large noise in principle, and therefore cannot be used in a place where many devices susceptible to the noise such as an intensive care unit exist. Furthermore, the system is complex and expensive. In addition, the method using a gas flame requires a gas cylinder, making it difficult to reduce the size and weight, and there is a danger of using fire at medical sites that always use flammable solvents for disinfection. Was.

As a method for simplifying a system and suppressing noise as much as possible, for example, Japanese Patent Application Laid-Open No. 11-128286,
There is a method of applying electricity and utilizing Joule heat as disclosed in Japanese Patent Application Laid-Open No. Hei 7-155352. In this case, a short circuit occurs in order to dissolve the needle, so that a large power is required. When a normal primary and secondary battery is used as a power source, the life is shortened due to overload. Furthermore, when a normal electrolytic capacitor is used as a countermeasure, the energy is too small and only the tip of the needle is melted, so that the treatment cannot be completely performed. Also, when using a household power supply,
Although both power and energy are sufficient, there is a problem with the lack of mobility, which requires large-power-compatible power supply equipment, increases the size, and cannot be used in places without a power supply. Furthermore, for these power supplies,
Since the energy is too large, it is necessary to manage the power supply so that the process ends with the discharge of the required energy for each process.

[0004]

SUMMARY OF THE INVENTION The present invention solves the problems of the prior art. The use of an electric double-layer capacitor as a power source simplifies the circuit, reduces the size of the battery while maintaining mobility, and reduces the battery life. To improve and
An object of the present invention is to provide an injection needle processing device that generates less noise.

[0005]

SUMMARY OF THE INVENTION The present invention relates to an injection needle processing apparatus for sterilizing and fusing an injection needle, comprising a power supply unit for generating a current for heating the entire injection needle with Joule. It is.

Further, the present invention is the injection needle processing device wherein the power supply section has an electric double layer capacitor.

[0007] The present invention is an injection needle processing apparatus including a tip electrode in contact with the tip of the injection needle and a root electrode in contact with the end of the injection needle.

Further, according to the present invention, the sterilization / fusing treatment is performed by:
This is an injection needle processing device in which an output of 100 W or more is continuously performed for at least one second.

[0009]

Embodiments of the present invention will be described. An embodiment of the injection needle processing device of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram of an appearance of an injection needle processing device according to an embodiment. FIG. 2 is an explanatory view of a side cross section of the injection needle processing device of the embodiment. FIG. 3 is an explanatory diagram of a top cross section of the injection needle processing device of the embodiment. FIG. 4 is an explanatory diagram of current and voltage characteristics of the injection needle processing device of the embodiment. FIG.
FIG. 4 is an explanatory diagram of output power characteristics of the injection needle processing device of the embodiment.

An embodiment will be described. The injection needle processing device 1 according to the present embodiment includes a processing unit 2 and a power supply unit 3, as shown in FIGS. The processing unit 2 includes a tip electrode 21, a root electrode 22, a spring 23, and a V-shaped plate 2 for removing the tip.
4, a processed needle metal part receiver 25, a needle resin part receiver 26, a handle 27, and the like. The tip electrode 21 comes into contact with the tip of the metal part 41 of the inserted injection needle, and is pressed and moved. The base electrode 22 contacts the base of the metal part 41 of the injection needle. Then, when a voltage is applied between the tip electrode 21 and the root electrode 22 during the sterilization and fusing treatment, the metal part 4 of the injection needle is applied.
Current flows through 1 and the injection needle is sterilized and dissolved by Joule heat. The sterilization and fusing process is performed at a power of 100 W or more for at least one second. The spring 23 applies a pressure in the opposite direction to the tip electrode 21 that is moved by being pressed by the inserted injection needle, thereby ensuring contact between the tip electrode 21 and the injection needle tip portion 41a. The V-shaped plate for removing the distal end 24 has a V-shaped injection needle insertion port. When the processed syringe 43 is pulled out, the distal end resin portion 42 of the injection needle is caught and can be separated from the syringe 43. The processed needle metal part receiver 25 receives the remaining part of the metal part 41 that has been sterilized and dissolved and dropped from the processed injection needle. The needle tip resin portion receiver 26 receives the resin portion 42 which is separated from the injection needle main body portion 43 and falls by the tip removal V-shaped plate 24.
The handle 27 is used when taking out and collecting waste inside the treated needle metal part receiver 25 and the needle tip resin part receiver 26.

The power supply unit 3 in the embodiment includes a battery (B
AT) 31, an electric double layer capacitor (CAP) 32, a main switch 33, a CAP charging unit 34, a charging speed switch 35, and the like. Battery (BAT) 3
1 supplies a current (part of the current) used for sterilizing and fusing the injection needle 4 and a current for charging the electric double layer capacitor 32. The electric double layer capacitor 32 supplies most of the electric current used for sterilizing and fusing the injection needle 4, and
When the main switch 33 is turned off, the battery is charged from the battery 31. The electric double layer capacitor 32 has an initial voltage of 6
It is preferable that the resistance is not less than V, the capacitance is not less than 5F, and the internal resistance is not more than 500 mΩ. When the main switch 33 is turned on, a current is supplied between the tip electrode 21 and the root electrode 22. When the switch is turned off, the current supply between the tip electrode 21 and the root electrode 22 stops, and the charging current is supplied from the battery 31 to the electric double layer capacitor 32. The CAP charging unit 34 charges the electric double layer capacitor 32 with the current from the battery 31. Charge speed switch 35
Controls the CAP charging unit 34 so that the battery 31
The charging speed of the electric double-layer capacitor 32 is switched.

The power supply unit 3 will be specifically described. The battery 31 uses a sealed lead storage battery having a battery capacity of 12 Ah. The electric double layer capacitor 32 has a withstand voltage of 12 V, a capacitance of 15 F, and an internal resistance of 130 mΩ. First, the electric double layer capacitor 32 is charged from the battery 31.
When the metal part 41 of the injection needle is inserted, the tip part and the root part of the metal part 41 of the injection needle come into contact with the tip electrode 31 and the root electrode 32, respectively. A large current is supplied from the double-layer capacitor 32, and the injection needle is melted by Joule heat. When the metal part 41 of the injection needle is melted, there is no longer any contact with the tip electrode and the root electrode, so that the supply of current stops naturally. In addition, even if a short circuit continues due to other factors such as the incorporation of foreign matter, if the energy of the electric double layer capacitor 32 runs out, supply of a large current stops, and the battery 31 whose current is limited so as not to be overloaded. , The current hardly flows.

The electric double layer capacitor in the embodiment will be described in detail. 0.7mm outside diameter, 0.3m inside diameter
m, needle length of 70 mm for treatment of injection needle, withstand voltage 12V,
An electric double layer capacitor A having a capacitance of 15 F and an internal resistance of 130 mΩ was used. FIG. 4 shows the measurement results of the current 51 and the voltage 52, and FIG. 5 shows the measurement results of the change over time of the output power 53. As shown in FIGS. 4 and 5, when the electric double layer capacitor A was used, a large output of 100 W or more was maintained, so that the entire needle glowed red and the needle melted and stopped flowing in about 2.1 seconds. As described above, it is understood that the use of the electric double layer capacitor A enables sterilization as well as fusing of the needle. Since this processing method does not use an alternating current but uses a direct Joule heat, there is almost no generation of noise during the processing. As Comparative Examples 1 and 2, withstand voltage 12V, capacitance 5F, electric double layer capacitor B having an internal resistance of 900 mΩ, withstand voltage 12V, capacitance 1F,
Using a large electrolytic capacitor C having an internal resistance of 10 mΩ, the operation was performed in the same manner as in the example. When the electric double-layer capacitor B is used, the voltage drop is large due to its internal resistance and a large current cannot be taken out, so that the required output cannot be obtained (up to about 11 W), and the injection needle does not change. I was not able to admit. When an electrolytic capacitor C having a low internal resistance is used, a necessary current can be taken out, but a large output does not continue due to a shortage of energy (about 0.9 seconds). It only melted. Thus, it was found that when the electric double layer capacitor B and the electrolytic capacitor C were used, the injection needle could not be completely blown or sterilized.

[0014]

According to the present invention, the use of an electric double-layer capacitor as a power supply simplifies the circuit, improves the battery life while maintaining compactness and mobility, and further reduces the generation of noise. A processing device can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of the appearance of an injection needle processing device according to an embodiment.

FIG. 2 is an explanatory diagram of a side cross section of the injection needle processing device of the embodiment.

FIG. 3 is an explanatory diagram of a top cross section of the injection needle processing device of the embodiment.

FIG. 4 is an explanatory diagram of current and voltage characteristics of the injection needle processing device of the embodiment.

FIG. 5 is an explanatory diagram of output power characteristics of the injection needle processing device of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Injection needle processing apparatus 2 Processing part 21 Tip electrode 22 Root electrode 23 Spring 24 V-shaped plate for tip removal 25 Treated needle metal part receiver 26 Needle resin part receiver 27 Handle 3 Power supply part 31 Battery (BAT) 32 Electric double layer capacitor (CAP) 33 Main switch 34 CAP charging unit 35 Charging speed changeover switch 4 Syringe 41 Injection needle metal part 41a Tip part 41b Root part 42 Injection needle resin part 51-53 Characteristics when using electric double layer capacitor

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65F 1/00 B09B 3/00 303Z (72) Inventor Masahiro Takahashi 8 Dosana, Fujisawa-shi, Kanagawa C Co., Ltd. F-term in CRL (reference) 3E023 AA14 AA18 4C058 AA27 BB02 CC02 DD05 DD11 EE26 4C341 LL13 LL24 4D004 AA48 CA29 CA44 CA46 CB31 CB50 DA03 DA20

Claims (4)

[Claims] 1. An injection needle processing device for sterilizing and fusing an injection needle, comprising: a power supply unit for generating a current for joule heating the entire injection needle. 2. The injection needle processing device according to claim 1, wherein the power supply unit has an electric double layer capacitor. 3. The injection needle processing device according to claim 1, further comprising a tip electrode in contact with a tip portion of the injection needle, and a root electrode in contact with a distal end portion of the injection needle. Injection needle processing device. 4. The injection needle processing apparatus according to claim 1, wherein the sterilization and fusing processing is performed at a power of 100 W or more for at least one second. Needle processing equipment.