JP3558721B2 - Syringe sheath and needle removal device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a medical injection tool, in particular, a syringe sheath that can be used for a syringe already filled with a medicinal solution and to which a disposable injection needle can be attached, and a needle through which the sheath can be easily withdrawn and inserted. The present invention relates to a needle removal device that enables a portion and a sheath body to be separated and discarded.
[0002]
[Prior art]
As shown in FIG. 2, a syringe is filled with a drug solution, and a syringe filled with a drug solution (32) is sealed with a rubber stopper (33) and a gasket (35) at the rear end of the syringe. ) Is known, especially in the field of radiopharmaceuticals, since the operation of transferring radiopharmaceutical liquids is unnecessary, so that the radiation exposure of the operator during the operation can be reduced and the radioactive waste can be reduced. It is widely used.
At the time of injection of a radiopharmaceutical solution, in order to reduce radiation exposure, the syringe (31) having a see-through window (34) made of lead glass on the side wall as shown in FIGS. 32) is stored and used.
[0003]
The present inventors can easily attach a needle to a syringe filled with a drug solution when using the radiation shield device, and at that time, a general-purpose disposable injection needle can be used, and confirmation of securing blood vessels before administration can be performed. Inventors of the present invention have invented an injection tube sheath that can effectively prevent the operator's fingers from being hurt, and can perform needle tip alignment before setting a radioactive drug solution (Japanese Patent Application No. Hei 5 (1994) -108686). $ 339709).
[0004]
In using these, first, a plunger (37) is screwed into a gasket (35) in a syringe (32) filled with a chemical solution stored in a radiation shield device (31), while a mail lure of a syringe sheath is provided. Prepare a disposable needle (6) attached to part (2). Next, the radiation shield device is inserted into the sheath body (1), and the penetration needle (3) is pierced through the rubber stopper (33) to complete the preparation for administration.
For administration to a patient, after piercing the patient's blood vessel, the plunger (37) is once pulled slightly to reverse the blood, and the transparent female luer portion (6a) of the disposable injection needle (6) and the syringe sheath The blood is visually observed in the gap (8) with the mail lure part (2) to visually confirm the securing of blood vessels.
[0005]
[Problems to be solved by the invention]
In recent years, the problem of biohazard in the medical field, such as AIDS and hepatitis C, has been highlighted, and great care must be taken when handling medical waste such as syringes. In addition, when radioactive chemicals are used, they must be strictly managed as radioactive waste. Therefore, it is desirable to minimize the amount of medical waste and radioactive waste.
Also, since the problem of garbage is becoming more serious, it is desirable to separate garbage according to the type (material) of the garbage.
[0006]
[Means for Solving the Problems: Configuration]
The present invention is a syringe barrel sheath and a needle removing device invented in order to solve the above-mentioned problem, and it is possible to easily remove a penetrating needle of the syringe barrel sheath and separate a needle portion and a sheath body. And a needle removal device for the sheath.
[0007]
That is, a sheath body (1) for inserting the radiation shield device (31), a mail luer part (2) for attaching a disposable injection needle (6) provided at the distal end of the sheath body, and a liquid medicine filled. An injection tube sheath (4) having a penetrating needle (3) extending downward from the inside of the mail luer portion for penetrating a rubber stopper (33) at the distal end opening of the syringe (32),
The sheath body has a cutout (5) cut out from a portion corresponding to the see-through window (34) of the radiation shield device, and the lower end (3a) of the penetrating needle is located below the upper end (5a) of the cutout. It is a syringe sheath characterized by performing.
Furthermore, it is a needle removal device for removing a penetrating needle of an injection tube sheath, comprising a hollow cylinder (11), a rotating shaft (12) and a lever (13) for rotating the rotating shaft,
The hollow cylinder is an inner hollow cylinder having an outer diameter smaller than the inner diameter of the sheath body, and the hollow cylinder is vertically mounted on an upper surface of a collection box (14) for collecting the removed needle. There is a shaft hole (15) at the top of
The rotating shaft (12) is a cylindrical or polygonal column having a diameter smaller than the width x of the notch (5) of the sheath, one end of which is linked to the lever (13), and the other end of which is provided in the hollow cylinder. Through the shaft hole (15) provided in the hollow cylinder at right angles to the hollow cylinder,
When the notch (5) of the sheath is aligned with the shaft hole (15) and the injection tube sheath is placed on the hollow tube, the lower end (3a) of the penetrating needle is straightened downward. There is a passage hole (16) through which
At this time, the lower end (3a) of the penetrating needle is located substantially at the center of the passage hole (16) or within a range not exceeding the gap y between the rotating shaft and the hollow cylinder. A needle removal device for a syringe barrel sheath, which is located at a lower position.
[0008]
The syringe barrel sheath of the present invention can easily attach a needle to a syringe filled with a drug solution in a radiation shield device, and at this time, avoid the risk of injury to the operator's finger because the penetrating needle is inside the sheath body. This makes it possible to use general-purpose disposable injection needles of various diameters and needle lengths according to the intended use, and to confirm the securing of blood vessels in the gap between the disposable injection needle and the syringe sheath.
In addition, if the needle removing device of the present invention is used for the present syringe barrel sheath, it is possible to safely separate the penetrating needle that is a medical waste and a radioactive waste, and it is not necessary to use it without using it. Also in the injection tube sheath, the sheath main body and the penetrating needle can be separated, and the metal penetrating needle and the plastic sheath main body can be separately discarded.
[0009]
【Example】
Hereinafter, an example will be described using an embodiment.
In addition, for convenience, the description will be made with the mail lure side of the syringe barrel sheath facing upward.
[0010]
An injection tube sheath according to the present invention has a structure as shown in FIGS. 1 to 3, and includes a sheath body (1) for inserting a radiation shielding device, and a general-purpose disposable injection needle (6) attached to a distal end thereof. The sheath body (1) is composed of a mail luer part (2) for making it possible and a penetrating needle (3) extending downward from the inside of the mail luer part. And (2) a notch (5) extending to just before and having a portion corresponding to the see-through window (34) made of lead glass cut out. If the rear end of the notch is provided with a widened portion (5b), mounting to the radiation shield device becomes easy. Further, a mark (7) for adjusting the direction of the tip of the disposable injection needle (6) may be provided above the notch (5).
[0011]
The material of the sheath body is desirably a plastic resin such as polypropylene, polyethylene, polycarbonate, polystyrene, etc., which is easy to sterilize and is light in weight. Even if it is transparent or colored from the viewpoint of appearance and aesthetics, Needless to say, it can be used.
[0012]
A penetrating needle (3) extending downward is provided inside the mail lure portion (2). At this time, the lower end (3a) of the penetrating needle is located below the upper end (5a) of the notch, and when the radiation shield device (31) is inserted into the sheath body (1), the inside of the radiation shield device (31) is removed. The lower end (3a) of the penetrating needle that has passed through the rubber stopper (33) at the distal end opening of the syringe (32) filled with the drug solution stored in the container can be seen through the see-through window (34). .
[0013]
Also, as shown in FIG. 9, if a through hole (2a) smaller than the outer diameter of the penetrating needle (3) is provided at the upper end inside the mail lure part, and the penetrating needle (3) is inserted into the lower part thereof and integrally molded, This is preferable because there is no fear that the male luer portion and the penetrating needle are disbonded and the penetrating needle comes off due to a large force applied when the penetrating needle (3) penetrates the rubber stopper (33).
[0014]
Next, a needle removal device for removing the penetrating needle of the syringe barrel sheath will be described with reference to FIGS.
The needle removing device of the present invention comprises a hollow cylinder (11), a rotating shaft (12), and a lever (13) for rotating the rotating shaft.
The hollow cylinder (11) is an inner hollow cylinder having an outer diameter smaller than the inner diameter of the sheath body, and the hollow cylinder is vertically mounted on the upper surface of a collection box (14) for collecting the removed needle. I have. The inner space of the hollow tube passes through the upper surface of the collection box (14). Further, a shaft hole (15) for passing the rotation shaft (12) is provided at the upper end of the hollow cylinder.
The hollow cylinder (11) is desirably made of a material that can be easily processed and formed, such as plastic, in order to make the interior hollow or to form the shaft hole (15). Further, when the transparent needle is made transparent, it is possible to visually observe the state where the penetrating needle (3) comes off.
[0015]
The rotating shaft (12) is made of metal and is a cylinder or a polygon having a diameter smaller than the width x of the notch (5) of the sheath. A small gear (17) is attached to one end of the shaft and a large gear (18). ) Is interlocked with the lever (13), and the other end is disposed at right angles to the hollow cylinder inside the hollow cylinder through a shaft hole (15) provided in the hollow cylinder.
The rotating shaft may be made of a hard plastic or the like in addition to metal.
As shown in FIGS. 4 and 8, the notch (5) of the injection tube sheath is aligned with the shaft hole (15) in the stationary state (the state in which the lever is not operated) as shown in FIGS. 11), there is a through hole (16) through which the lower end (3a) of the penetrating needle can pass straight down toward the bottom. In this case, the lower end (3a) of the penetrating needle is connected to the through hole (16). ), Or located below the passage hole (16) within a length not exceeding the gap y between the rotary shaft and the hollow cylinder.
[0016]
At this time, if the lower end (3a) of the penetrating needle does not substantially reach the center of the passage hole (16) of the rotating shaft (12), the needle cannot be wound up, or the lower end (3a) of the needle is If the needle is located below the gap y between the rotary shaft and the hollow cylinder, it is possible to wind up the needle. However, it is disadvantageous that the extracted needle cannot be stuck on the rotary shaft.
The passage hole (16) may have a width slightly larger than that of the penetrating needle (3), and may be cylindrical or polygonal. However, as shown in FIG. (When viewed from above). Further, the hollow tube (11) may be made transparent so that the state where the penetrating needle comes off can be visually checked.
[0017]
When the rotating shaft (12) is rotated by operating the lever (13), the penetrating needle (3) is pulled downward (winded) around the upper end of the passage hole (16) as a fulcrum.
The lever (13) is fixed to the shaft of a large gear (18), and when the lever is operated, the force is transmitted from the large gear (18) to the small gear (17), and rotates the rotating shaft (12). Therefore, the lever can be operated with a relatively small force.
In this embodiment, the lever and the rotating shaft are linked by two gears, and the lever is moved in an arc. However, if the rotating shaft can be easily rotated, the lever may be rotated. May be used.
After the needle is removed, a mechanism having a restoring force such as a spring (19) is attached to return the rotating shaft (12) to the original state (stationary state). When the rotating shaft returns to its original state, the withdrawn penetrating needle (3) falls down through the inner space of the hollow cylinder and is accommodated in the collection box (14).
If a screw type stopper (20) is provided on the lever (13) or the main body side, fine adjustment of the stationary state can be performed by adjusting this.
[0018]
Further, the collection box (14) may be provided with a keyhole-shaped needle removal hole (21) for removing the disposable injection needle (6).
[0019]
【The invention's effect】
Since the present invention is a syringe sheath as described above, the needle can be easily attached to the syringe filled with the drug solution in the radiation shield device, and at this time, the surgeon does not hurt his fingers, A disposable injection needle can be used, and it is possible to confirm the securing of a blood vessel in a gap between the disposable injection needle and the injection tube sheath.
Further, if the present needle removing device is used, the penetrating needle can be removed without touching the fingers.
Further, the metal needle and the plastic sheath body can be separately discarded.
[Brief description of the drawings]
FIG. 1 is a perspective view when a radiation shield device is inserted into a syringe sheath of the present invention and preparation for administering a drug solution is completed.
FIG. 2 is a sectional view of the radiation shield device and the like shown in FIG. 1;
FIG. 3 is a cross-sectional view of the injection-tube sheath of the present invention when viewed from the front.
FIG. 4 is a perspective view when the injection tube sheath of the present invention is put on the needle removing device of the present invention.
FIG. 5 is a plan view of the needle removing device of the present invention when viewed from the front.
FIG. 6 is a plan view of the needle removing device shown in FIG. 5 when viewed from the side.
7 is a plan view of the needle removing device shown in FIG. 5 when viewed from above.
8 is a plan view of the rotating shaft and the penetrating needle in a stationary state of the needle removing device shown in FIG. 5 when viewed from the front.
FIG. 9 is an enlarged view of a mail lure portion of the syringe barrel sheath of the present invention.
[Explanation of symbols]
1: Sheath body 2: Male luer part 2a: Through hole 3: Penetrating needle 3a: Lower end of penetrating needle 4: Syringe sheath 5: Notch 5a: Upper end 5b of notch: Spreading part 6: Disposable injection needle 6a: Disposable Female luer part 7 of the injection needle: mark 11: hollow cylinder 12: rotating shaft 13: lever 14: collection box 15: shaft hole 16: passage hole 17: small gear 18: large gear 19: spring 20: stopper 21: needle Drilled hole 31: Radiation shield device 32: Syringe 33 filled with chemical solution: Rubber stopper 34: Transparent window 35: Gasket 36: Wing 37: Plunger

Claims (4)

A sheath body (1) for inserting a radiation shield device (31), a mail luer part (2) for attaching a disposable injection needle (6) provided at a distal end of the sheath body, and a syringe filled with a drug solution A penetrating needle (3) extending downward from the inside of the mail luer part for penetrating the rubber stopper (33) at the distal end opening of (32) , and a needle for extracting the penetrating needle of the syringe barrel sheath (4). A punching device,
A hollow cylinder (11), which stands upright on a collection box (14) for collecting the extracted penetrating needles, is covered with the injection tube sheath smaller than the inner diameter of the sheath body, and the penetrating needles protrude into the interior; ,
One end is interlocked with the lever (13) and the other end is rotatably disposed in the hollow cylinder through a shaft hole (15) provided in the hollow cylinder. A through hole (16) into which the penetrating needle protruding into the hollow cylinder when inserted into the cylinder is inserted, and when the penetrating needle is inserted into the through hole, the lever is rotated by operating the lever; A rotating shaft (12) for extracting the penetrating needle from the inside of the mail lure part;
A needle removing device comprising: The syringe barrel sheath further has a notch (5) cut out from the sheath body corresponding to the see-through window (34) of the radiation shield device, and the rotating shaft has a width (x) of the notch. The needle punching device according to claim 1, wherein the needle punching device is a cylinder or a polygon having a smaller diameter than that of (i). When the syringe barrel sheath is covered with the hollow cylinder, the lower end (3a) of the penetrating needle is located substantially at the center of the passage hole, or the gap (y) between the rotating shaft and the hollow cylinder is formed. The needle punching device according to claim 1, wherein the needle punching device is located so as to protrude from the passage hole within a length not exceeding the length. The needle punching device according to any one of claims 1 to 3, wherein the hollow cylinder is transparent.

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