JPH08112349A - Cutting processing device for used needle of injection - Google Patents

Abstract

PURPOSE: To provide the device which sterilizes and cuts a used needle of injection. CONSTITUTION: A needle projecting and sinking guide 3 with an upper-limit stopper 3a having a needle insertion hole 3b is inserted into a needle projecting and sinking guide support frame formed in a processing case main body 1 for the used needle, a fixed electrode cutter 4 having a tip blade 4a is fixed on one side in the processing case main body 1, and a rotary cutter 5 which is supported on a pivot 7 opposite it and has a tip blade 5a meshing the tip blade 4a and a slanting surface type movable electrode 8 is formed while energized in the opening direction at all times with a spring 9. Further, the rotary cutter 5 is provided integrally with a pressing cam 6 which strokes the needle projecting and sinking guide 3 to the upper limit and lower limit, and the needle inserted into the needle insertion hole 3b is bridged between the fixed electrode cutter 4 and movable electrode 8 and fed with low electric power to heat and sterilize remaining liquid and to generate heat for softening; and the needle is further pressed in to lower the pressing cam 6, and the base of the needle is cut by the rotary cutter 5 which is associated with the pressing cam 6.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a processing device for sterilizing and cutting used injection needles.

[0002]

2. Description of the Related Art At present, disposable syringe needles are widely used and used in large quantities in syringes for the sake of safety, and as a result, a large amount of needle waste occurs and safety measures are not thoroughly implemented. Together with this, there is no end to the accident that a disposal company accidentally pierces a finger or the like during the disposal process. This accident may lead to serious accidents such as hepatitis B and C viruses adhering to the needle, blood infection due to AIDS, etc. Therefore, it is instructed to be careful when disposing. As a safety measure for its disposal, a bulky but non-stick syringe holder part and a dangerous injection needle are separated, and in particular, only the injection needle is thoroughly managed and safely disposed. As this separation method, there are a method in which the nurse pulls it out with fingers and a method in which it is mechanically separated by using a processing tool.Thus, it became easy to remove the needle tip, but the needle tip itself Since it remains sharply pointed, it is still impossible to prevent accidents such as a finger stick in the middle of disposal.

Further, there has been proposed a device (actual flat blade 2-11148) for mechanically bending and pulling out a needle tip. In the case of this treatment, although the linear puncture due to the bending of the needle can be reduced, most needle tips remain sharp and pointed out, so it is not possible to eliminate injury accidents such as puncturing a finger. Since none of the above mechanical methods is sterilized, there is a possibility that infection due to an injury accident such as a finger stick and diffusion of pathogenic bacteria after the treatment process and disposal may occur.

For this reason, there has been proposed an injection needle processing apparatus of the type in which the needle tip is burnt off for processing, as proposed in JP-A-60-5155. At this point, sterilization has finally been carried out, and injury accidents can now be prevented. However, with this device, there is a strong spark and a bad odor that burns the residual liquid when burning out, and there is also a problem that the power consumption is extremely large in order to melt and damage the injection needle, and it has been spread until now. There wasn't.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a device with low power consumption that can easily heat-sterilize a used injection needle and can easily cut the needle itself at low pressure. It is provided.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has a needle retractable guide support frame 2 provided in a processing case body 1 having a needle insertion hole 3b in a needle retractable guide support frame 2 and a needle retractable with an upper limit stopper-3a. Insert the guide 3. A fixed electrode cutter 4 having a tip blade 4a is fixedly provided on one side in the processing case body 1, and is fixed to a side opposite to the fixed electrode cutter-4 by a pivot shaft 7 and the tip blade 4a.
A rotary cutter 5 having a tip blade 5a that engages with a and having a slanted movable electrode 8 is always biased in the opening direction by a spring 9, and the needle retractable guide 3 is the upper limit of the rotary cutter 5. A pressing cam 6 for stroking the lower limit is integrally provided.

Then, the needle inserted into the needle insertion hole 3b is bridged to the fixed electrode cutter-4 and the movable electrode 8 to heat and sterilize the residual liquid by heating and sterilizing the residual liquid by low-power energization, and further pressing the needle. It is a device that pushes down the pressing cam 6 by inserting it and cuts the base portion of the needle with the rotary cutter 5 which is interlocked with this.

[0008]

Since the present invention has the above-mentioned structure, when the injection needle is inserted into the needle insertion hole 3b of the needle retractable guide support frame 2, the needle tip of the injection needle A is formed into the inclined shape of the rotary cutter 5, as shown in FIG. The movable electrode 8 of the fixed electrode cutter 4 and the base of the injection needle contacts the tip blade 4a of the fixed electrode cutter-4. Then, a current flows from the tip blade 4a of the fixed electrode cutter-4 and the movable electrode 8 to heat the injection needle due to electrical resistance. Then, pathogenic bacteria such as bacteria and viruses in the residual liquid adhering to the injection needle die.

When the syringe is further pushed, as shown in FIG. 3, the needle withdrawal guide 3 is pushed down by the injection needle fixing portion B, the needle withdrawal guide 3 pushes down the pressing cam 6, and the rotary cutter integrated with the pressing cam 6. The tip blade 5a of -5 is pressed toward the fixed electrode cutter-4, and as shown in FIG. 4, the base portion of the injection needle in which both tip blades 4a and 5a are occluded and sandwiched is cut. At the time of this cutting, since the injection needle is heated and softened by the electric current, it can be easily cut by simply holding the syringe cylinder part and pressing it lightly.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 3, the upper limit plate 3a is provided with a needle insertion hole 3b having a diameter slightly wider than the needle diameter at the center of the needle retractable guide support frame 2 provided through the upper surface plate 1a of the processing case body 1. The needle retractable guide 3 is inserted so that it can be retracted. Then, a processing case spaced apart from the needle insertion hole 3b of the needle retractable guide 3.
A tip blade 4a made of a conductive metal with which a base portion of the injection needle A protruding from the needle insertion hole 3b contacts one side wall in the main body 1 of the sleeve.
The fixed electrode cutter 4 having the above is fixed.

On the opposite side of the fixed electrode cutter-4, the fixed blade 5a is pivotally supported by a pivot portion 5b on a pivot shaft 7 which is fixedly located below the front edge of the tip blade 4a of the fixed electrode cutter-4 and fixed. A rotary cutter 5 made of a conductive metal, which has a tip blade 5a that engages with the needle and also integrally has a downward slanted movable electrode 8 at a lower position where the needle tip comes into contact when the injection needle A is inserted through the needle insertion hole 3b. Is always biased by the spring 9 in the opening direction. Further, the rotary cutter 5 is integrally provided with a pressing cam 6 that strokes the needle retractable guide 3 to the upper and lower limits.

The pressing cam 6 is always provided with the needle retractable guide 3.
The lower end portion 3c of the needle is pushed up by the upper end portion 6a of the pressing cam 6, and the needle retracting guide 3 is stopped at the upper limit by the upper limit stopper-3a. Then, a circuit (not shown) having a different polarity current is provided to the fixed electrode cutter-4 and the movable electrode 8 and is connected to a power source (not shown) by a code 13. Then, the needle inserted into the needle insertion hole 3b is contact-bridged with the fixed electrode cutter-4 and the movable electrode 8 to heat and sterilize the residual liquid by heating and sterilizing the residual liquid by energizing with low power,
When the needle is further pushed, the injection needle fixing portion B pushes the pressing cam 6 to the lower limit via the needle retracting guide 3 and cuts the base portion of the needle with the rotary cutter 5 interlocking with this.

The power source can be operated with a relatively low current, and when 10 amps and 4 volts are used, when the injection needle is first inserted, about 0.5 is provided between the needle tip and the base of the needle. When electricity is applied for 2 seconds and the temperature of the needle reaches 240 to 300 ° C, the pathogenic bacteria are completely killed. When the needle is further pushed in, the tip blade 4a of the fixed electrode cutter-4 and the tip blade 5a of the rotary cutter 5 at the base of the needle.
The current is applied to the needle with and, and the current flows through the short distance of the needle, so the electric resistance is reduced and the current is about 20 amperes. Therefore, the tip blades 4a, 5a become particularly hot in about 0.5 seconds and become 500 ° C. As described above, the red heat is softened and the metal becomes weak, so even if it bites with a weak force, it can be easily cut.

The power supply of the conventional device for electrically melting and damaging the needle requires energization for at least 2 seconds using 30 amps and 6 volts. Therefore, in the present invention, as compared with the above-mentioned conventional device, since the needle is not melted and burned out, it is not necessary to raise the temperature so much, and the power consumption is 1/6 or less and the needle can be sufficiently cut by a low current for a short time. .

Further, the processing case body 1 can be disposed of collectively by providing a storage space for the processed injection needles in the lower part thereof so that the drawer tray can receive the cut and dropped needles. Further, if the power source is of the battery built-in type, the processing case 1 of the present invention can be carried anywhere and handling becomes extremely easy. Reference numeral 10 in the drawing is a spring 9
Is a spring stopper, 11 is a stopper on the back side of the rotary cutter, and 12 is a fixing screw to the processing case body.

[0016]

As described above, according to the present invention, when a used injection needle is inserted, the injection needle is energized, and the electric resistance of the injection needle causes heat to rise to several hundreds of degrees Celsius and the residue remains on the injection needle. Completely kills pathogenic bacteria such as bacteria and viruses in the liquid. At the same time, since the injection needle is softened by heat, the cutter can be easily cut even under a low pressure, and the injection needle can be easily cut in a short time by simply pressing the syringe lightly. Therefore, as compared with the conventional device that merely mechanically cuts, the present invention enables cutting and sterilization processing with low power, and the conventional device that electrically melts and damages produces strong sparks and severe In contrast to the occurrence of a foul odor and the large power consumption required for melting and damaging the injection needle, the present invention produces almost no sparks or odors and can cut the injection needle in a short time with extremely low power consumption. With it, it becomes possible to completely sterilize, and doctors and nurses can comfortably and easily dispose of used needles.
Waste disposal companies can now carry out recovery and disposal without worrying about infection.

[Brief description of drawings]

FIG. 1 is a partial notch centering around a processing case body of the present invention,
The perspective view which shows the state which inserted the injection needle.

FIG. 2 is a schematic vertical cross-sectional side view showing a use state in which a tip of a needle is in contact with a movable electrode.

FIG. 3 is a schematic vertical cross-sectional side view showing a use state in which a needle retracting guide is being pushed down by an injection needle fixing portion.

FIG. 4 is a schematic vertical sectional side view showing a use state at the moment when the needle is cut.

[Explanation of symbols]

 1 Processing case main body 1a Upper surface plate of processing case main body 2 Needle retractable guide support frame 3 Needle retractable guide 3b Needle insertion hole of needle retractable guide 3a Upper limit stopper of needle retractable guide-3c Lower end of needle retractable guide 4 Fixed Electrode cutter 4a Fixed electrode cutter tip blade 5 Rotating cutter 5a Rotating cutter tip blade 5b Rotating cutter pivot support 6 Pressing cam 6a Pressing cam upper end 7 Rotating cutter pivot 8 Moving electrode 9 Spring 10 Spring stopper 11 Stopper 12 Fixing screw for processing case 13 Code A Injection needle B Injection needle fixing part

Claims (1)

[Claims] 1. A needle withdrawal guide (3) with an upper limit stopper (3a) having a needle insertion hole (3b) is fitted into a needle withdrawal guide supporting frame (2) provided in a processing case body (1). A fixed electrode cutter (4) having a tip blade (4a) is fixedly provided on one side in the processing case body (1), and the fixed electrode cutter (4) is pivotally supported on a pivot shaft (7) on the opposite side to the tip blade and is the tip blade. A rotary cutter (5) having a tip movable blade (5a) that engages with (4a) and a slanting movable electrode (8) is provided by a spring (9) always biased in the opening direction, and further the rotary cutter. -(5) is integrally provided with a pressing cam (6) for stroking the needle retracting guide (3) to the upper and lower limits, and the needle inserted into the needle insertion hole (3b) is fixed to the fixed electrode cutter ( 4) and the movable electrode (8) are cross-linked to heat and sterilize the residual liquid by energizing with low power and soften the heat, A device for cutting a used injection needle, in which a pressing cam (6) is pushed down by pushing the needle into the needle to cut the base of the needle with a rotary cutter (5) which is interlocked with this.