JPH09224985A - Injection needle disposing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove an injection needle without touching the needle side of an injector with the used injection needle and store it in another disposal container by providing a needle remover which holds the outer wall surface of a mounting part of the injection needle so as to remove it from the injector and a storage tool which makes the injection needle separated from the injector to fall and stores therein. SOLUTION: A needle remover 2 holds and fixes an injection needle 1 inserted inside the needle remover 2, the needle remover 2 is rotated with its fixed state held by a drive means 3 driven by a power supply and a control circuit 50, and the holding operation is released in the last. The injection needle 1 released from a syringe 12 is fallen in a bottom case 7 and stored therein. The injection needle 1 is sanitary handled, and a throw-away storage tool 7a is provided. This constitution can eliminate any medical accident from occurring in removing the injection needle with the bare hands.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for disposing of used injection needles, and more particularly to an injection needle disposal device which does not touch a used injection needle during a disposal operation.

[0002]

2. Description of the Related Art Generally, a used injection needle of a syringe is covered with a syringe container which is housed before use, removed from the syringe, and covered with a container cap for predetermined disposal. By the way, there are two types of syringes, one is for general medical use where a needle is simply attached to the tip of the syringe and the other is for dentistry where a screw is attached to the needle mounting part and screwed and fixed to the syringe. Needle inoculation can be performed near the bone tissue without coming off even if force is applied due to the structure. However, on the other hand, it takes time to remove the injection needle from the syringe. Recently,
There was a great deal of concern among medical staff regarding the risk of accidents involving HIV (commonly known as AIDS) and hepatitis due to mishandling of used needles, especially when used needles were removed from the syringe. I became careful about the act of discarding.

FIG. 6 shows the general structure of a dental syringe.
The syringe 12 accommodates a liquid cartridge 13 containing an injection liquid, and the mounting portion 1b of the injection needle 1 is screwed to the syringe 12 via a male screw connection port 12a. Here 13a is
It is a thin film of a liquid cartridge 13 through which the needle tip of the injection needle 1 located on the side of the syringe 12 penetrates. Note that A- in FIG.
As shown in FIG. 3D which is a view as seen from the arrow A ′, linear protrusions are formed substantially parallel to the outer wall surface of the mounting portion 1b to assist the manual work of screwing and tightening. Next, as shown in FIG. 1B, the injection needle 1 for general use and dental use is housed in an injection needle container 11 covered with a container cap 11a, and the band is cut and taken out. After use, hold the syringe 12 in one hand, and the needle 1 in the needle container 11 held in the other hand.
Over the needle tip and push it down to the mounting portion 1b. At this time, in the case of a general medical injection needle, a little force is applied to the container cap 11a and the syringe 12 side is displaced, but the injection needle 1 comes off.
With the dental injection needle, the male threaded portion 12a is rotated and the syringe 12 is rotated.
Then, the injection needle container 11 is covered with the container cap 11a and disposed of. At present, such a series of procedures all depend on the manual work of the medical staff.

[0004]

Generally, an injection needle container 11 is used.
Is manufactured without error so that it fits in the small outer shape of the injection needle 1, and is not made from the viewpoint that a person can safely re-store it in the container after using the needle. Therefore, when a person puts the used injection needle 1 back into the injection needle container 11 in an environment of high tension during a tight time competing for minutes and seconds in the medical field, the finger tip is accidentally moved by the injection needle 1. May hurt. In order to prevent this danger, as shown in FIG. 2C, a disposal preventive tool 16 for an injection needle having a wide brim instead of the container cap 11a.
(Brand name "Aimsafe", a product of Seldren Co., Ltd.) is commercially available. However, this disposal preventive tool 16 does not exempt the work of removing the injection needle 1 from the syringe 12 with bare hands. Therefore, it cannot be said that the danger of touching the needle tip has been significantly reduced in the environment described above.

In the present invention, the needle is mechanically removed without touching the needle side of the used syringe with the needle and stored in a separate container for disposal so that the needle can be removed with bare hands. It is an object of the present invention to provide an injection needle disposal device capable of eliminating the above-mentioned medical accident that occurs in 1.

[0006]

Therefore, the present invention provides a card
An insertion port for inserting a syringe equipped with a tridge type injection needle from the needle tip, a receiving port for stopping the injection needle or the syringe from advancing at a fixed position, and after holding the admission, gripping and fixing the outer wall surface of the mounting portion, Next, the needle is removed from the syringe by rotating it, and the gripping state can be released, the driving means for operating a series of operations of the needle removing tool by attaching a gear, and the control circuit for controlling the driving state. And a switch for turning on the drive motor and a container for dropping and storing the injection needle separated from the syringe after the releasing operation.

According to the present invention, a gripping fixation made of an elastic material having a thickness in the injection needle advancing direction at the central portion of the needle remover, the central portion narrowing from the upper side to the lower side, and formed in a petal-like opening is formed. Part is provided at the injection needle abutting position, and when the injection needle is inserted, the narrow part of the gripping and fixing part makes it possible to elastically grip and fix the outer wall surface of the mounting part, and the insertion operation force. The start switch of the driving motor is turned on by the above, and the needle remover can be rotated.

Further, according to the present invention, a pair of elastic rolls, which also serve as receiving ports for pinching the mounting part, are attached to the inside of the gear part at the entrance of the injection needle, or in addition, above the elastic roll. , By attaching a pair of guide wheels and a toothed flat plate that are rotatably fixed about a support shaft, the guide wheel that abuts as the syringe lower end spreads out and at the same time the toothed flat plate can be clamped in the mounting part. The needle remover is configured.

Further, according to the present invention, after the syringe stops advancing at the receiving position, the driving means for fixing the injection needle provided with the motor or the weight is rotatably operated via the rotary cylinder which partitions the injection needle space portion. The needle remover comprises a fixing tool provided with a pair of toothed flat plates for fixing the injection needle mounting portion by gripping or pinching the injection needle operating portion before or almost simultaneously with the needle removing operation.

With the above construction, the injection needle disposal device of the present invention replaces all used needle disposal and re-storing operation in the injection needle container, which was performed by bare hands, with the device. Simply touch the syringe with the dirty needle attached to the syringe insertion port without touching the cap, and the needle will be automatically detached from the syringe. It can be dropped into a disposable container so that when the waste is full, it can be discarded in a batch.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An injection needle disposal device according to the present invention will be described below with reference to the drawings. 1A and 1B are explanatory views of the device of the present invention, where FIG. 1A is a block diagram showing a basic configuration, FIG. 1B is a block diagram showing another device configuration, and FIG. 1C is a block diagram showing a disposal operation of an injection needle. FIG. 2 illustrates one embodiment of the device of the present invention. (A) is a side view including a partial fractured surface showing the inside of the device, (B) is a circuit diagram thereof, and FIG. The main part of the invented device will be described below. FIG.
The side view including the 1st fracture surface of (A), (B) is A of (A)
4A and 4B are views for explaining the needle remover of another embodiment of the device of the present invention, (A) is a side view showing one embodiment, and (B) is another embodiment. The side view shown, and FIG.
Similarly, for explaining another embodiment of the device of the present invention,
(A) is a side view including a partly broken surface of an embodiment with a motor-attached fixing tool, (B) is a view taken along the line AA ′ of (A), and (C) is a weight-attached fixing tool It is a top view of an example rotary cylinder part.

As shown in FIG. 1 (A), the present invention holds a syringe 12 and holds and fixes an injection needle 1 inserted inside a needle remover 2, and a power source and a control circuit 50 drive the drive. By the means 3, the needle remover 2 is rotated while maintaining the fixed state, and finally the needle remover 2 that allows the gripping operation to be released and the injection needle 1 released from the syringe 12 fall, and The basic structure is the lower case 7 to be stored, and as will be described later in detail, drive-related means for operating these and the needle 1 are disposed hygienically and are disposed as disposables. The tool 7a is used as an auxiliary part. Further, the needle remover 2 fixes the injection needle 1, and the syringe 12
In contrast to the configuration in which the injection needle 1 is detached from one position (hereinafter referred to as a collective type), the one shown in FIG. The fixture 4 for sharing the needle is attached to the needle remover 2, and the injection needle 1 is rotated by an operation by a separate mechanism thereafter, so that the syringe 12
It is configured to be detached from (hereinafter referred to as a sharing type).

FIG. 2 (A) shows a one-piece injection needle disposal device 10, which is an upper device 5 for removing the injection needle 1 from a syringe 12, and the removed injection needle 1 is dropped in order. The housing 7a for housing is housed in the lower case 7 by screwing and connecting the housing 7a to the upper device 5 via a screw portion 5b. There is. The upper device 5 includes a syringe 12 with the needle 1 attached to the upper part.
In order to drop the injection needle 1 with the lower part removed for insertion, the upper and lower parts of the center are opened, and the entire side cross section is formed into a trapezoidal shape and faces the bottom opening surface of the insertion port 5a provided on the upper side. Then, the needle remover 2 described in detail later is arranged. The needle remover 2 is rotatably attached to the outer peripheral wall of the opening provided on the lower bottom plate 5f together with the screw portion 5b, and the opening communicates with the inside of the container 7a. The outer peripheral wall surface of the needle remover 2 is provided with a gear that follows and rotates via a gear 3a that is driven by the drive of a motor 31 fixed to the inner wall surface of the upper device 5. Reference numeral 8 is a power source for driving, 8a is an internal switch or sensor that is turned on when the needle remover 2 receives the injection needle and stops advancing at the receiving port 14, and then further moves downward by the pushing pressure force, and 8b is charged. Device connection
Reference numeral 8c is a changeover switch for selecting the OFF state of the power source 8, and 5g is an indicator lamp.

As shown in FIG. 3, the first embodiment of the collective needle remover 2 will be described in detail below. The needle remover 2 has a main body 2a whose upper surface is wide open, and a gripping and fixing portion 2 made of an elastic material which can be dented or bent inside the lower surface.
b is provided internally, and the whole is formed into a tubular body having a U-shaped cross section, and a gear portion 2c meshing with the gear 3a is provided on the outer wall surface thereof. On the other hand, on the side of the bottom plate 5f of the upper device 5, a cylindrical body formed of an elastic material, that is, a spring portion 5e is formed by standing up in an opening provided in the center thereof, and a charging port 5d into which a bearing 5c is fitted is formed. The needle remover 2 is fixed to the inside of the upper portion of the spring portion 5e, and is rotatably fitted to the outside of the bearing 5c so as to receive the driving rotational force of the motor 31. There is. In addition, as shown in FIG.
The gripping and fixing portion 2b having a thickness in the injection needle advancing direction communicates with the upper and lower sides of the main body 2a and has a petal-shaped opening 2d according to the plane shape and the size of the injection needle mounting portion 1b. As shown in FIG. (A), the inner peripheral wall surface of the opening 2d is shaped such that the central portion thereof is oriented from the upper side to the lower side in accordance with the cross-sectional shape of the mounting portion 1b, and the opening is slightly narrower at the central portion of the opening. Then, when inserted, the petal-shaped narrow portion is bent by the outer peripheral wall of the mounting portion 1b so that the mounting portion 1b can be gripped.

Next, FIG. 4 shows a needle remover 20 of a second embodiment having a batch type other structure. FIG. 1A shows a pair of elastic rolls 22 and 2 which are rotatably attached to shafts 21 and 21 'supported by the inner frame of the gear portion 2c.
2'consists of a mounting portion 1 for the inserted injection needle 1
b, the elastic roll is rotated in the R1 and R2 directions by the inserting force to be sandwiched and fixed in a pressed state, and then the elastic roll 22, via the gear portion 2c,
Rotate the entire 22 '. In this example, the receiving port 14 exists within a certain range above the elastic roll, and cannot be specified at one place.

The elastic roll type is a fixing method that depends on the surface frictional force of the constituent materials. The one shown in FIG. 1B shows that in addition to the surface frictional force of the material, the injection needle mounting portion 1b is used. The needle remover 2 of the third embodiment provided with teeth for mechanically gripping another part of the needle remover 2 by fixing the mounting portion 1b at two positions, thereby gripping and fixing the needle remover 20 during rotation. The tooth shape and the roll support the injection needle, in which the portions are in different contact states. That is, a pair of support shafts 18, 1 fixedly provided on the elastic roll support shafts 21, 21 'of the needle remover 20.
8'is provided with a pair of frame bodies having a V-shaped cross section in a freely rotatable manner, and toothed flat plates 17 and 17 'having tooth profiles formed inside thereof are attached to the upper part of the frame bodies. Guide car 1
5, 15 'are arranged so that when the syringe 12 is inserted from above the needle remover 20, the guide wheels 15, 15' are rotated.
It is rotated and spread, and the force of the spread causes the tooth profile of the toothed flat plates 17, 17 'to be r'on the injection needle mounting portion 1b.
The opening angle of the above-mentioned "V" shape is formed by turning in the direction and sandwiching.

As shown in FIG. 2B, the one-piece injection needle disposal device 10 thus constructed has a changeover switch 8c.
When the needle remover 2 is moved in the S direction by an external force while the switch is ON, the internal switch 8a is rotated in the R direction to form a closed circuit, and the driving power source 8 supplies electric power and the indicator lamp Turn on 5g. Changeover switch 8c is OFF
In the state, even if the needle remover 2 moves in the S direction, the power is turned on.
Not N. When the switch is not operated, the fitting type injection needle for general medical use can be easily removed. Although not shown here, the waste injection needle 1 is attached to the container 7a.
When the battery is full, a sensor may automatically detect the state, and a full display circuit may be added and operated to display by a separately provided indicator lamp. Further, the internal switch 8a is configured to be turned on by the movement of the needle remover 2 due to the above-described configuration, but a switch panel (not shown), which is separately provided, is provided in the upper device 5, and the switch 8a is activated each time it is used.
You may operate with another structure. However, in this case, it is not necessary to install the spring portion 5e at the bottom of the upper device 5, and
The d may be formed by directly rising from the bottom plate 5f.

FIG. 5 (A) shows a shared needle disposing device 10 (hereinafter referred to as a mower) which is equipped with a motor-equipped fixture.
A device with an attached fixture), in which the upper device 5 has an insertion port 5a which also serves as a receiving port 14 for receiving the syringe 12 and which has a bottom plate 5f having an opening in the center thereof attached to the upper surface of the central part thereof. A drive means 3 for the needle remover 2 and a drive means 6 for the injection needle fixing means 4 are provided on the surface of the bottom plate 5f. The lower frame of the upper device 5 is screwed to the lower case 5 having an opening at the center of the upper part, so that the used injection needle 1 can be inserted into the syringe 12.
It is assembled so that it can be removed and discarded when it is discarded. The needle remover 2 comprises drive means 3 and 6 and a hollow shaft 33. Ie upper device 5
A hollow shaft 33, which is inserted into the lower case 7 through the insertion port 5a and the opening of the bottom plate 5f, is provided at approximately the center so as to separate the insertion space of the injection needle 1 from other internal spaces. The hollow shaft 33 is rotatably fixed to the inner wall of the upper device 5 through the bearings 5c and 5c 'at the upper and lower positions thereof, and the insertion port 5a
When the driving means 3 or 4 is actuated by the touch sensor 8a in place of the internal switch attached to the hollow shaft 33, the hollow shaft 33 can be rotated according to a control circuit (not shown).

The drive means 3 for the needle remover 2 comprises a motor 31
And a gear 3a connected to the motor 31 via a gear 32, and the gear 3a is fixed to the hollow shaft 33. Further, the driving means 6 for the injection needle fixing means 4 is indirectly fixed to the motor shaft by a motor 61 for rotating in the rotation direction R4 opposite to the motor 31 and a stopper 9 with a spring washer. Then, a gear 6a connected to the motor 61 via a gear 62 which is designed to idle when a rotational torque equal to or greater than the tightening force is generated, and an injection needle mounting portion 1 on the upper surface of the gear 6a.
The gear 6a is fixed to the hollow shaft 33 by being inserted into the hollow shaft 33 and is held at a fixed position on the gear 3a. In addition,
The gear 62 may be fixed to the motor shaft of the motor 61 when the rotational torque is safely controlled by performing the motor rotation operation by precise control.

Further, the above-mentioned fixture 4 will be described in detail. As shown in FIG. 3B, the hollow shaft 33 located on the upper surface of the gear 6a is provided with a plurality of long holes 43, for example, three, which are cut out in a horizontally elongated shape of substantially the same size along the circumference thereof. The support shafts 42 are provided on the upper side of the gear 6a on the upper side of the gear 6a in the rotation direction R4 in the number of the elongated holes, and one end of each support shaft 42 is rotatably fixed. , The other end is the long hole 43
The toothed plate 41, 41 ', 41''inserted into the hollow shaft 33 is attached to the inside of the hollow shaft 33 so that the tooth profile 40 faces the upper side of the mounting part 1b when the injection needle mounting part 1b is inserted. It is installed at the position where it meshes with. The motor 61 is rotated such that the rotation direction of the gear 6a is the same as the rotation direction of the gear 3a rotated by the motor 31 for the needle remover.

On the other hand, in the one shown in FIG. 3C, instead of the driving means 6 for the injection needle fixing means, the mounting portion 1b is gripped and fixed by a fixing tool 4 provided with a weight. That is, the support shaft 42, the toothed flat plate 41, and the perforated hollow shaft 33 are configured in the same manner as that provided in the motor-equipped fixing device 10 in the gear 3a for the needle remover 2. In addition, in addition to each of the toothed flat plates 41, a tension spring 44 for returning the intermediate portion thereof in the centrifugal direction and a tip of the toothed portion are connected to each other to apply a centrifugal force when the hollow shaft 33 rotates. The string-equipped weight 45 to be actuated is arranged above the gear 3a. Reference numeral 45a denotes a guide which is inserted through the stringed weight 45 and guides the movement so that the weight 45 does not run away when it moves. In addition, when the gear 3a for disposing the fixture 4 provided with the weight rotates in the R5 direction,
The weight 45 reversely rotates in the r direction. Further, when the fixture 4 provided with the weight is provided (hereinafter referred to as a device provided with the fixture provided with the weight), the drive means 6, the motor 61 and the gear 6 are provided.
Parts associated with a and gear 6a are omitted.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The injection needle disposal device 10 of the present invention supplies a driving power source 8 by wire when fixedly mounted at a fixed location, but can be charged by a single type battery or a charger in a portable type. Powered by a simple battery. By the way, needle remover 2
The direction of rotation is set to only one rotation that allows the injection needle 1 to be removed from the syringe 12, and the number of rotations is set to substantially 5 rotations, and even if free rotation is considered, it is set to 10 rotations or less per needle removal operation. That is, the motor 4 is stopped after a certain rotation,
If the switch 8a is closed after a predetermined time,
The circuit configuration is set to enable intermittent operation, that is, the same rotational speed operation is performed again. When the injection needle 1 is disengaged, a torque sensor detects a change in torque, or a drop confirmation sensor including a photoelectric element detects a drop of the injection needle 1, or a screw is used five times or more simply. The control circuit 50 that detects the end of the return operation and produces a unique electronic sound is formed.

In the collective injection needle disposal device 10, the elastic material of the gripping and fixing portion 2b of the needle remover 2 and the material of the elastic roll are made of a soft rubber whose surface layer has an elastic force or a medium hard rubber containing bubbles. Or a foamable plastic material having high surface friction resistance is appropriately selected and used. The shape of the opening 2d provided in the grip fixing portion 2b in the side cross-section is slightly smaller than the vertical cross-section of the injection needle mounting portion 1b so as to conform to the outer shape, and the tongue piece is formed toward the center of the opening 2d. The tip of the elastic member formed into a shape comes into contact with the inserted mounting portion 1b and bends, and is bent into either of the spaces on both sides of the tongue piece so that the mounting portion 1b is pinched. The cylindrical spring portion 5e that is erected in the opening at the center of the bottom of the upper device 5 has a thickness that allows it to withstand the load of the needle remover 2, and insert a syringe 12 with an injection needle to move a few strokes. A hard rubber having a thickness of about 5 mm or less or a plastic material having equivalent flexibility is experimentally obtained and selectively used.

Embodiments 2 and 3 of the collective needle disposal device 10
The elastic rolls 22 and 22 'used for the above are formed with a two-layer structure of a hard part in the central part and a soft part in the surface part to form an effective receiving port 14 for the mounting part 1b, and to mount the mounting part 1b. A wide effective contact area for appropriately gripping the contact surface of 1b is generated in the elastic roll, and the material can be quickly restored when the insertion pressure is removed.

In the shared needle disposing device 10, the toothed flat plate 41 of the fixture 4 that abuts the needle mounting portion 1b,
41 ′ and 41 ″ are made of thin and hard stainless steel material or surface smooth and hard plastic material. Hollow shaft 3
3 is made of a lightweight, transparent, and hard surface plastic material, and is formed to have a surface finish in which dirt is unlikely to adhere.

In the motor-equipped fixing device 10, the spring metal washer 9 provided on the motor 61 side of the fixing device 4 is excessively or excessively small by experimentally obtaining the spring force thereof. Design with proper spring function so that you do not choose tightening torque. If it is too large, the motor 61 cannot be safely driven, and if it is too small, the mounting portion 1b cannot be effectively gripped. Therefore, even if the hollow shaft 33 is rotated, the injection needle 1 comes off from the syringe 12. Absent. Although the toothed flat plates 41, 41 ', 41 "' of the injection needle fixing means 4 are formed by a three-point set, they may be formed by a two-point set, and the tightening mechanism thereof is a diaphragm of a camera. It may be replaced with a shutter mechanism.

Although not shown here, since the lower case 7 or the container 7a of the injection needle disposal device 10 cannot be filled with the container 7a forever when the injection needle 1 is discarded less frequently. It may happen that the product is not finally disposed of for a long time. In this case, a buzzer may be sounded at regular intervals, such as several weeks, and a period management circuit may be attached and operated to warn the final disposal even if the container 7a is not full. Furthermore, by allowing the perfume to be internally present in the device of the present invention together with the disinfectant for a temporary period, the liquid remaining in the used injection needle 1 or the altered substance is transferred to the outside from the container 7a via the upper device 5. Corresponding to the case where it may cause an unpleasant odor to be released, these unpleasant odors are eliminated by chemical reaction or removed by masking.

The injection needle disposal device configured as described above is
In the collective type, in the case of the dental syringe having the above-mentioned basic configuration, the operation is performed as shown in the block diagram on the left side of FIG. 1 (C). First, the power source or the like is properly arranged, and after the changeover switch 8c is turned on to start the state, the first needle disposing operation is performed. That is, the syringe 12 with the used injection needle 1 is inserted into the insertion port 5a of the upper device 5 at the tip of the injection needle 1 (S1). Then, the needle remover 2 is inserted into the center of the needle remover 2, and the injection needle mounting portion 1b receives the pressing force when hitting the receiving port 14 and pry open the opening of the grip portion 2b of the needle remover 2, and the remaining force removes the needle remover 2. Push down in the S direction. Then, the internal switch 8a is rotated to close the basic circuit, and the power source 8 is turned on (S2). Motor 31
Is driven to rotate (S3), and the needle remover main body 2a is rotated via the gear 3a while holding the mounting portion 1b in the opening of the grip portion 2b. The screw is turned and the injection needle 1 is removed (S4). It can be known that the hand holding the syringe 12 does not feel the rotational torque even if the sensor does not detect this detaching operation.

Next, when the syringe 12 is pulled up from the insertion port 5a (S5), the pressing force is removed, the internal switch 8a is returned to the initial position and opened, and the power source 8 is turned off (S6). The detached mounting portion 1b is sandwiched by needle removal tool openings 2d, and the inserted injection needle 1 has a needle removal tool 2
Is left closed (S7). That is, the initial operation is completed by the route of the initial step order (a) route shown in FIG. At the next needle disposal operation,
Similarly, when the syringe 1 is inserted into the insertion port 5a as shown in the next step sequence (b) route, the insertion pressure of the first injection needle 1 with the opening 2d closed is pushed downward, It falls to 7a and is accommodated (S8). The detachable injection needle 1 that closes the opening 2d by the above operation narrows the space between the upper device 5 and the container 7a, and prevents the air in the container 7a from flowing out.

In the general medical injector disposal operation performed with the changeover switch 8c in the OFF state, the upper part of the needle body 2a is inserted to the lower side of the narrowest opening 2d of the needle remover 2 and pulled up as it is. Thus, the injection needle 1 is removed.

Similarly, in the sharing type apparatus having a motor-attached fixing device constructed as described above, basically, FIG.
The power supply circuit shown in Fig. 1 is formed, and especially for a dental injector, the part within the chain double-dashed line indicated by the partial step A in the block diagram shown on the left side of Fig. 1C is replaced with the block diagram shown on the right side. The operation proceeds with the operation of the contents. Except for the above description of the operation of the overlapping portion, the injected needle mounting portion 1b comes into contact with the insertion opening 5a in the upper portion of the hollow shaft 33 to operate the sensor 8a. This operation turns on the power supply 8.
It operates (S2).

Then, the motor 61 for the needle fixing device 4 is driven to rotate the gear 6a, and the back plate portion of the toothed flat plate 41 inserted into the elongated hole 43 of the hollow shaft 33 is moved to the inner wall of the elongated hole. Is pressed, the three tooth shapes 40 facing the mounting portion 1b start to bite into the outer wall of the mounting portion 1b, and the injection needle 1 is gripped and fixed (S9). When a torque larger than the required fixing force is generated, the metal fitting with spring washer 9 functions to idle the motor 61, and the fixing operation force of the mounting portion 1b is maintained at a constant design torque force. As shown in FIG. 5D, this operating time t1 is preferably about 0.1 seconds. Normally, however, the motor 31 for the needle remover 2 is rotationally driven with the delay of t1 second, and the hollow shaft 33 rotates in substantially the same rotational direction as the gear 6a for the fixture, so that the motor 61 Is not overloaded. And the hollow shaft 33 has about 5
To rotate, the motor 31 is activated for t2 hours. When the two motors are operated in parallel, each motor is adjusted so that the rotation speed of the gear 6a is slightly higher than that of the gear 3a.
The gear ratio of the gears associated with the motor is adjusted and designed. When the operating time t2 elapses in this state, the injection needle 1 is disengaged from the syringe 12, and when the motor 31, 61 is moved to a short rest time t3 within about 1 second, the gripping and fixing state is released. (S10). As a result, the syringe 1 separated from the syringe 12 falls into the container 7a below (S11). However, if the timing is not good and the needle removing operation is not completed yet, the rotation of only the needle removing tool 2 is restarted for t4 time, and the series of operations is completed.

[0033]

INDUSTRIAL APPLICABILITY The injection needle disposal device of the present invention can be disposed of only by grasping the syringe body side, which is easy for the user to operate and can be used with or without screws. As in the above, the needle and its surroundings can be kept away from hand, and the used needle can be automatically transferred directly to the container for disposal until it is full. Therefore, there is no possibility that an accidental operation of an injection needle that has conventionally occurred during medical service will occur, and the mechanical disposal of a used injection needle can be performed with peace of mind, while significantly reducing the risk of occurrence of a medical accident. The technical and psychological effects, and the obtained occupational health management effect greatly improve the medical environment.

[Brief description of drawings]

FIG. 1 illustrates an injection needle disposal device of the present invention.
(A) is a block diagram showing its basic configuration, (B) is a block diagram showing another device configuration, and (C) is a block diagram showing a disposing operation of an injection needle.

FIG. 2 illustrates one embodiment of the device of the present invention.
(A) is a side view including a partial fracture surface showing the inside of the apparatus,
(B) is the circuit diagram.

3A and 3B are views for explaining a main part of the device of the present invention, where FIG. 3A is a side view including a partial fractured surface of FIG. 2A, and FIG.
FIG. 8 is a view on arrow AA ′ of FIG.

4A and 4B are views for explaining the main part of the needle remover of another embodiment of the device of the present invention; FIG. 4A is a side view showing one embodiment, and FIG. 4B is a side view showing another embodiment. .

FIG. 5 is a view for explaining another embodiment of the device of the present invention,
(A) is a side view including a partly broken surface of an embodiment with a motor-attached fixing tool, (B) is a view taken along the line AA ′ of (A), and (C) is a weight-attached fixing tool It is a top view of an example rotary cylinder part.

6A and 6B are views for explaining a conventional syringe structure and a disposition preventive tool for an injection needle, wherein FIG. 6A is a side view including a partial fracture surface of a dental injector, and FIG. The side view of a container, (C) is a sectional side view which shows a disposal preventive tool, (D) is an AA 'arrow view of (A).

[Explanation of symbols]

1 Cartridge type injection needle 1a, 1a 'Needle part 1b Mounting part 2, 20 Needle remover 2a Main body 2b Grip fixing part 2c Gear part 2d Opening 3 Driving means (for needle remover) 3a, 6a, 32, 62 gear 4 injection needle fixing means, fixing tool 5 upper device 5a insertion port 5b screw part 5c bearing 5d input port 5e spring part 5f bottom plate 5g indicator light 6 driving means (for injection needle fixing means) 6a gear 7 lower case 7a Container 8 Drive power supply 8a Internal switch 8b Charger connection code 8c Changeover switch 9 Spring washer stopper 10 Injection needle disposal device 11 Injection needle container 11a Container cap 12 Syringe 12a Male screw connection port 13 Liquid cartridge 13a Thin film 14 Receptacle 15, 15 'Guide wheel 16 Disposal preventive tool 17, 17' Toothed flat plate 18, 42 Spindle 21 Shaft 2 2, 22 'Elastic roll 31, 61 Motor 33 Hollow shaft 40 Tooth profile 41, 41', 41 "Toothed flat plate 43 Long hole 44 Return spring 45 String weight 45a Guide 50 Power supply / control circuit A part Process (a) First step order (b) Next step order L1, L2 Rotating cylinder tip position R, R1, R2, R3 Rotating direction R4, R5, r, r'Rotating direction S Falling direction t1, t2, t4 Operating time t3 Downtime

Claims (4)

[Claims] 1. An insertion port (5a) for inserting a syringe (12) equipped with a cartridge type injection needle (1) from a needle tip.
And a receptacle (14) for stopping the injection needle (1) or the syringe (12) from advancing at a fixed position and an outer wall surface of the mounting portion (1b) after fixing the admission, and then rotating. A needle removing device (2) that can be released from the syringe (12) and further release the gripped state, and a driving means (3) for operating a series of operations of the needle removing device (2) by attaching a gear (2c). )
A control circuit (50) for controlling the driving state, a switch (8a) for turning on the driving motor (31), and an injection needle (1) separated from the syringe (12) after the releasing operation.
An injection needle disposal device, comprising a container (7a) for dropping and storing the. 2. A gripping fixation made of an elastic material having a thickness in the injection needle advancing direction at the center of the needle remover (2), the center being narrowed from the upper side to the lower side, and formed into a petal-like opening. When the injection needle (1) is inserted, the narrow portion of the grip fixing portion (2b) elastically grips the outer wall surface of the mounting portion (1b) when the portion (2b) is provided at the injection needle contact position. It can be held and fixed, and it can be driven by the insertion operation force.
The injection needle disposal device according to claim 1, wherein the start switch of the switch (31) is turned on, and the needle remover (2) is configured to be rotatable. 3. The mounting portion (1) at the entrance of the injection needle (1).
A pair of elastic rolls (22, 22 '), which also serve as receiving ports (14) for pinching b), are attached to the inside of the gear part (2c), or in addition thereto, the elastic rolls (22, 22'). A pair of guide wheels (15, 15 ′) and a toothed flat plate (17, 1), which are rotatably fixed around a support shaft (18) above the table.
7 ') is attached to spread the guide wheel (15, 15') that abuts as the lower end of the syringe (12) advances, and at the same time, the toothed flat plate (17, 17 ') is clamped to the mounting portion (1b). The needle disposing device according to claim 1, wherein the needle removing device (2) is configured to be possible. 4. The motor (61) or weight (45) after the syringe (12) has stopped advancing at the position of the receiving port (14).
An injection needle (1) is provided with a drive means (6) for fixing an injection needle attached with
By rotating the hollow shaft (33) that separates from the space portion, the pair of rods is operated before or almost at the same time as the needle removing operation to grip or pinch the injection needle mounting portion (1b). 2. The needle disposing device according to claim 1, wherein the fixing device (4) provided with the toothed flat plates (41, 41 ', 41 ") is configured as a needle removing device (2).