JPH07155352A - Dissolution treating device for used injection needle - Google Patents

Abstract

PURPOSE:To safely treat used injection needles to dissolve these needles with simple operation. CONSTITUTION:The DC voltage from a storage battery B is impressed across the injection needle V having an electrical conductivity to dissolve the injection needle V by utilizing the joule heat generated in the injection needle V. The root of the injection needle V is held in the state of bringing one electrode (minus movable electrode K and minus stationary electrode L) in common use as a shutter into contact with the injection needle V and another electrode (plus electrode D) moves along an insulating part W interposed between this electrode and the one electrode and comes into contact first with the front end of the injection needle V, thereby energizing the injection needle V.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is applied to hospitals, clinics, etc.
The present invention relates to a processing device for melting a disposable type used injection needle used in hospitals and the like by Joule heat.

[0002]

2. Description of the Related Art In recent years, infection of diseases caused by body fluids such as AIDS and hepatitis has become a serious problem, and medical personnel in hospitals and the like are always scared of infection. One of the preventive measures is to use a disposable needle, but doctors and nurses who are injecting the injection, or those who are engaged in cleaning, disposal, etc. at the hospital, etc., inadvertently used the injection. I'm always at risk of piercing my body with a needle.

As a method of disposing of a used injection needle, a method of disinfecting or sterilizing by heating and discarding is generally used, but each of these methods requires a lot of trouble. In addition, since the injection needle itself remains in its original shape through a series of operations such as disinfection, heating, transportation, and disposal, there is still a possibility that a person engaged in each operation may accidentally pierce the injection needle into the body. There is. Therefore, no conventional treatment method for a used injection needle has satisfactory safety and workability.

The present invention has been made to solve the above problems, and its object is to provide high safety and
Moreover, it is another object of the present invention to provide a dissolution treatment device for a used injection needle, which can easily perform a treatment operation.

[0005]

In order to achieve the above-mentioned object, the present invention applies a direct current voltage from a storage battery to both ends of a used injection needle having conductivity and uses Joule heat generated in the injection needle. It dissolves the injection needle. More specifically, one electrode (for example, a negative electrode) that also serves as a shutter is held in contact with the injection needle to hold the base of the injection needle, and the other electrode (for example, a positive electrode) is placed between the negative electrode and the negative electrode. The needle is melted by using the Joule heat by moving along the intervening insulating part and bringing the tip of the needle into contact with the tip of the needle first so as to energize the needle.

It is desirable that the storage battery can be charged by a commercial power source and can be replaced as needed by a plug-in system. From the viewpoint of heat resistance,
Sintered carbon may be used as the electrode. Furthermore, in order to remove the odor generated when the injection needle is dissolved, it is preferable to provide an ozone generator that is interlocked with the dissolution operation.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit block diagram showing the configuration of this embodiment. In the figure, A is a charger connected to a commercial power source for charging a storage battery B as a power source of the apparatus with a voltage and current according to its capacity. This charger A
Can be connected to both a commercial power source and a storage battery B by a plug-in method. The storage battery B is always charged by the charger A when the device is not used, and the charger A is disconnected when the device is used. Since the storage battery B is stored in the storage battery storage portion of the device by the plug-in method, if the number of injection needle dissolution processes is large due to, for example, collective inoculation, and one storage battery B is insufficient in power source power supply, a backup storage battery B is used. It suffices to prepare a large number and replace them appropriately.

On the output side of the storage battery B, a power switch SW
A control circuit C composed of a one-chip microcomputer or the like is connected via 1 and power is supplied to the control circuit C by turning on the power switch SW1. For example, a green power indicator P
L1 is lit to indicate that it is in the operation standby state.

Further, a first relay RY1 and a second relay RY2 are connected in parallel on the output side of the storage battery B, and these relay coils are excited by the output current from the control circuit C. Has become. First relay RY
The other end of the contact point 1 is connected to a plate-shaped positive electrode D that is vertically movable. The plus electrode D is vertically driven by a driving force via a motor M such as a DC motor, a gear box E and a crank mechanism F.
An electromagnetic counter P for counting the number of melting processes is connected in parallel to the motor M.

A fan Q and an ozone generator R are connected to the other end of the contact of the second relay RY2, and when the injection needle is dissolved, the odor generated by evaporating body fluid or the like adhering to the injection needle is generated. Considered to be absorbed by ozone and deodorized.

A minus movable electrode K and a minus fixed electrode L are arranged facing the plus electrode D. These electrodes K and L are for holding the base of the injection needle V inserted in the insertion hole T between them by moving the minus movable electrode K downward. In addition, U shows a syringe. An insulating portion W made of ceramic or the like is formed on the surfaces of the electrodes K and L on the positive electrode D side. Each electrode D,
It is preferable to use sintered carbon as K and L in consideration of heat resistance.

The upper end of the positive electrode D is in contact with the lower surface of the movable insulating plate H, and the negative movable electrode K is integrally fixed to the movable insulating plate H. The other end of the spring J to which is fixed is fixed. Further, above the movable insulating plate H, an electrode position detection switch SW2 that is turned on when the movable insulating plate H is located near the top dead center is arranged.

With such a structure, when the plus electrode D is located at the top dead center, the electrode position detection switch SW2 is turned on via the movable insulating plate H. Further, when the plus electrode D moves downward and the movable insulating plate H moves downward due to the restoring force of the spring J, the detection switch SW2
Is turned off, and at the same time, the minus movable electrode K moving downward together with the movable insulating plate H holds the base of the injection needle V in the insertion hole T together with the minus fixed electrode L.

SW41, SW42 are start switches provided in parallel, and these switches SW41, S42
W42 is an injection needle V when the injection needle V is inserted into the insertion hole T.
The bulge of the joining portion X of is indirectly pressed and turned on. Two of these switches are provided to ensure starting.

PL2 is an operation indicator that lights up, for example, in red when the plus electrode D moves. G is a needle debris reservoir for accommodating the needle debris after the melting process. Then, a needle waste reservoir detection switch SW3 for detecting whether or not the needle waste reservoir G is attached to the device and calling attention is arranged in the vicinity. Further, N is a storage battery voltage detector composed of a voltage dividing resistor, which detects the storage battery voltage when the first relay RY1 is excited and takes it into the control circuit C to determine whether or not the storage battery B needs to be replaced. belongs to.

FIG. 2 is a side view showing the internal structure of this embodiment, FIG. 3 is a front view of the main part, and FIG. 4 is a plan view of the main part. 2 and 3, a switch drive plate 11 having a through hole is arranged in front of the minus movable electrode K and the minus fixed electrode L. This switch drive plate 11
Has a hemispherical shape around the through hole, and when this portion is pressed by the joint portion X of the syringe U, it moves to the minus movable electrode K side, whereby the start switches SW41 and SW42 shown in FIG. It is supposed to be turned on.

Further, as shown in FIG. 2, an injection needle contact plate 12 that moves integrally with the plus electrode D is provided below the plus electrode D. The contact plate 12 is for contacting the distal end portion of the injection needle V inserted through the insertion hole T to position the injection needle V in the longitudinal direction. By this, the length of the dissolving portion of the injection needle V is determined,
For an injection needle longer than this length, the dissolution treatment may be performed multiple times to deal with it.

As shown in FIG. 2, the plus electrode D is arranged so as to be slightly inclined with respect to the insertion direction of the injection needle V.
This is because the tip of the inserted injection needle V is brought into contact with the plus electrode D first, and a large current is supplied over almost the entire length of the injection needle V whose root is in contact with the minus movable electrode K and the minus fixed electrode L. This is a structure for causing Joule heat to be generated in the entire injection needle V by flowing it and to surely melt this.

In FIG. 3, the spring J for urging the minus movable electrode K downward is composed of a pair of leaf springs. In addition, the joint reservoir Y shown in FIGS. 2 and 4 is a joint portion remaining after the injection needle is dissolved in a syringe of a type in which a pump portion and a needle portion (consisting of an injection needle and a joint portion) are separated. It is for accommodating.

Next, the operation of this embodiment will be described. First, with the power switch SW1 turned on, the plus electrode D in the normal state is at the position of top dead center, and this state is detected by the electrode position detection switch SW2. When the plus electrode D is not detected by the detection switch SW2, the control circuit C drives the motor M to move the plus electrode D, and stops the motor M when the position is detected by the detection switch SW2.

When the power switch SW1 is turned on and the needle waste reservoir G is not attached, the needle waste reservoir detection switch SW3 detects this and sends a signal to the control circuit C to turn on the power indicator PL1. Do not light it to indicate that it is not in the operation standby state. As a result, it becomes possible to check whether or not the needle waste reservoir G is attached.

Here, when the injection needle V of the used syringe U is inserted into the insertion hole T with the pump portion attached, the joint X
As a result, the switch drive plate 11 is pushed and the start switch SW41 or SW42 is turned on. As a result, the operation indicator PL2 is turned on, the first relay RY1 is excited, the voltage of the storage battery B is applied to the positive electrode D, and the motor M is started. At the same time, the electromagnetic counter P counts up.

The rotation of the motor M is transmitted to the plus electrode D via the gear box E and the crank mechanism F, and the plus electrode D starts to move downward. With the movement of the plus electrode D, the movable insulating plate H moves downward due to the restoring force of the spring J, and the minus movable electrode K also moves downward, so that the base of the injection needle V inserted into the insertion hole T is fixed to a minus. It is held and held between the electrodes L. As a result, the negative electrodes K and L and the root of the injection needle V are electrically connected. Here, since the minus movable electrode K is in front of the injection needle V as seen from the user side, it prevents the sparks and flashes generated when the injection needle V is energized and melted from entering the eyes of the user, and also has an odor. It also functions as a shutter to prevent the diffusion of.

When the plus electrode D further moves downward and comes into contact with the tip of the injection needle V, the plus electrode D and the minus electrodes K and L are electrically connected through almost the entire length of the injection needle V. As a result, a large current flows and the injection needle V is instantly melted by the Joule heat generated in the injection needle V. The dissolved needle waste fell into the needle waste reservoir G, and in the syringe of the type in which the pump portion and the needle portion were integrated, the pump portion remained at the user's hand, and the pump portion and the needle portion were separated. In a syringe of the type, the joint part drops into the joint part reservoir Y and the pump part remains in the user's hand. In the drip syringe, the tube portion remains in the user's hand.

As shown by the imaginary line in FIG. 2, the plus electrode D
Is moved slightly below the insertion hole T, the crank mechanism F
The positive electrode D starts to move upward by the action of, and eventually contacts the movable insulating plate H and pushes it up. After that, the plus electrode D, the minus movable electrode K, and the movable insulating plate H move integrally upward, and when the electrode position detection switch SW2 is turned on by the movable insulating plate H, the energization of the motor M is stopped and the plus The electrodes D etc. are stopped, and the first relay RY1
Is de-energized. At this time, the operation display PL
2 goes out. The above operation is one dissolution processing cycle, and the required time is, for example, about 2 seconds.

The storage battery voltage detector N detects the voltage of the storage battery B while the first relay RY1 is excited.
When the control circuit C determines that this is less than or equal to the specified voltage, for example, by blinking the power supply indicator PL1 or the like, it can be notified that the storage battery B needs to be replaced or charged.

The second relay RY2 is the first relay RY1.
At the same time, excitation is started, and fan Q and ozone generator R
Will start. As a result, the air containing ozone is supplied to the periphery of the electrode, and the odor generated due to the dissolution of the injection needle V is absorbed and deodorized. The operating time is preferably as long as possible. For example, the relay RY2 is controlled by the control circuit C so as to be in the non-excited state 30 seconds after starting the excitation.

The above embodiment is merely an example, and the positive electrode side may be fixed and the negative electrode side may be movable, and the moving direction of the electrodes may be the horizontal direction. Further, in order to reciprocate the electrodes, the control circuit C may rotate the motor M in the forward and reverse directions to convert the rotational movement thereof into a linear movement. Furthermore, the movement of the electrodes may be a rotary movement. in addition,
It goes without saying that the present invention can be applied not only to a human body injector but also to an animal injector.

[0029]

As described above, according to the present invention, a direct current voltage from a storage battery is applied to both ends of a used injection needle having conductivity, and the injection needle is melted by Joule heat generated in the injection needle. An injection worker or a person in charge of cleaning or disposal at a hospital or the like can dissolve and process the used needle without touching it, and can eliminate the risk of being infected with a disease mediated by the used needle. Further, since the dissolution processing work requires almost no manpower, an apparatus having excellent workability and high processing efficiency can be realized.

[Brief description of drawings]

FIG. 1 is a circuit block diagram showing a configuration of an exemplary embodiment of the present invention.

FIG. 2 is a side view showing the internal structure of the embodiment.

FIG. 3 is a front view of a main part of the embodiment.

FIG. 4 is a plan view of a main part of the embodiment.

[Explanation of symbols]

 A Charger B Storage battery C Control circuit D Plus electrode E Gear box F Crank mechanism G Needle waste collection H Movable insulating plate J Spring K Negative movable electrode L Negative fixed electrode M Motor N Battery voltage detector P Electromagnetic counter Q Fan R Ozone generation Device T Insertion hole U Syringe V Injection needle W Insulation part X Junction part Y Junction part reservoir SW1 Power switch SW2 Electrode position detection switch SW3 Needle waste accumulation detection switch SW41, SW42 Start switch RY1 First relay RY2 Second relay PL1 power source Display PL2 Operation display 11 Switch drive plate 12 Injection needle contact plate

Claims (5)

[Claims] 1. Dissolution treatment of a used injection needle, characterized in that a direct current voltage from a storage battery is applied to both ends of a used injection needle having conductivity, and the injection needle is melted by Joule heat generated in the injection needle. apparatus. 2. One of the electrodes, which also serves as a shutter, holds the base of the injection needle in a state of being in contact with the injection needle, and the other electrode moves along an insulating portion interposed between the one electrode and the injection needle. The apparatus for dissolving and processing a used injection needle according to claim 1, wherein the injection needle is energized by first contacting the tip of the needle. 3. The used injection needle dissolution treatment apparatus according to claim 2, wherein the electrode is made of sintered carbon. 4. The used injection needle dissolution treatment apparatus according to claim 1, further comprising an ozone generator for eliminating an odor generated when the injection needle is dissolved. 5. The dissolving treatment device for a used injection needle according to claim 1, 2, 3 or 4, wherein the storage battery is a plug-in type and is replaceable.