JPH07289639A - Medicinal fluid-containing injector - Google Patents

Abstract

PURPOSE:To prevent the unexpected separation of the plug body of a medicinal fluid-containing injector having a cylinder charged in advance with a medical fluid, confirm the unused condition of the injector, and maintain hygienic condition in the cylinder. CONSTITUTION:This medicinal fluid-containing injector is formed out of a plug body 3 fitted to an injector needle mounting section 2a, a piston 4 inserted at the prescribed position, and a cylinder 2 charged with a medicinal fluid 7. The rear end opening 2b of the cylinder 2 is concealed with a cover member 6, and the plug body 3 is held in the cylinder 2 with a thermally contractive film 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drug-containing syringe in which a predetermined amount of drug is previously filled in a cylinder and which is sealed.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, a drug-filled syringe in which a drug is pre-filled and sealed is attached to a piston 4 inserted at a predetermined position in a cylinder 2 and an injection needle mounting portion 2a at the tip of the cylinder. In some cases, the medicine 7 is enclosed by the stopper 3. This medicine-containing syringe 11 is very hygienic because it does not require the work of sucking the medicine from another container such as an ampoule when used, and it is very hygienic. Simply remove the stopper 3 at the tip and attach the injection needle. It is very convenient because it can be used.

[0003]

However, in the conventional drug-containing syringe described above, since the plug 3 is only fitted into the injection needle mounting portion 2a, the plug 3 may be accidentally removed during handling. However, the safety could not be guaranteed because it was not possible to confirm whether the syringe had been removed before it was used.

Further, since the rear end opening 2b of the cylinder 2 of the syringe is in an open state, there is a sanitary problem of the syringe.

[0005]

[Means for Solving the Problems] As means for solving the above problems according to the present invention, a stopper 3 is attached to an injection needle attaching portion 2a, a piston 4 is inserted at a predetermined position, and a drug 7 is filled. In the medicine-filled syringe including the cylinder 2, the rear end opening 2b of the cylinder 2 is covered by the cover member 6
And the plug 3 is covered with a heat-shrinkable film 5.
Is held in the cylinder 2.

[0006] In addition, in the medicine-filled syringe including the cylinder 2 in which the plug 3 is attached to the injection needle mounting portion 2a, the piston 4 is inserted at a predetermined position, and the medicine 7 is filled, the cover 3 is covered with the cover cap 9. The drug is characterized in that the rear end opening 2b of the cylinder 2 is covered with a cover member 6, and the cover cap 9 is held in the cylinder 2 by contraction of the heat-shrinkable film 5. It is a syringe.

[0007]

The drug-containing syringe of the present invention is provided by the above-mentioned means.
Since the plug body 3 and the cylinder 2 are covered with the heat-shrinkable film 5, there is no risk of the plug body 3 coming off accidentally, and since the unused state can be confirmed, it can be used safely and with peace of mind. Further, the cover member 6 is provided on the rear end opening 2b of the cylinder.
Since it has a structure covered with, the inside of the cylinder can be kept in a hygienic state.

[0008]

Embodiments of the present invention will be described with reference to the drawings.

(First Embodiment) FIG. 1 and FIG. 2 show a drug-containing syringe 1 of the present invention. Inside the cylinder 2, a piston 4 is inserted at a predetermined position and filled with a drug 7 for injection. A plug body 3 made of rubber or the like is fitted to the injection needle mounting portion 2a at the tip of the cylinder 2. 5 is a tubular heat-shrinkable film. The heat-shrinkable film 5 covers the cylinder 2 and covers the upper surface 3a of the plug body 3.
Along the side of the cylinder 2 to shrink and close, and at the rear end of the cylinder 2, a cover member 6 made of a synthetic resin sheet material for closing the rear end opening 2b is held, and It is bent and contracted and closely attached to the surface 6a. The heat-shrinkable film 5 is provided with perforations 8 as cutting means for removing the plug body 3 and the cover member 6 when using a syringe.

In the drug-containing syringe 1 having the above-mentioned structure, since the stopper 3 is held in close contact with the heat-shrinkable film 5, it cannot be accidentally detached and the unopened state can be maintained. Further, since the cylinder rear end opening 2b is also closed by the cover member 6, there is no concern that dust or the like will enter and it is hygienic.

Further, when the syringe 1 is used, the stopper 3 and the cover member 6 can be easily removed by cutting the perforation 8 from the knob 8a provided on the heat-shrinkable film 5, and the piston 4 can be removed. It is very easy because you only have to attach a separate piston rod to.

(Second Embodiment) Next, a second embodiment of the drug injector according to the present invention will be described with reference to the drawings. As shown in FIG. 3, as in the first embodiment, the piston 4 is inserted into the cylinder 2 at a predetermined position, the medicine 7 is filled therein, and the plug 3 is fitted to the tip end portion. Reference numeral 9 denotes a cover cap made of synthetic resin, which is covered on the outside of the plug body 3 at the tip of the cylinder 2. The cover cap 9 includes
A flange portion 9a having a diameter larger than the outer diameter of the body portion of the cylinder 2 is formed. Reference numeral 6 denotes a synthetic resin sheet-shaped lid member having a diameter larger than that of the cylinder 2 and closing the rear end opening 2b.

Reference numeral 5 denotes a tubular heat-shrinkable film, which shrinks and adheres so as to hold the flange portion 9a of the synthetic resin cover cap 9 and the cylinder 2, and the sheet-like lid member 6 and the cylinder 2. .

FIG. 4 shows a cylindrical heat-shrinkable film 5 before it is attached to the cylinder 2. Near the ends of the heat-shrinkable film 5 of the cylinder 2, there are a synthetic resin cover cap 9 and a sheet-shaped film. Cutting perforations 8 for removing the lid member 6 are provided. The perforation 8 is a double perforation having good cutting performance.

Since the drug-containing syringe of the second embodiment has the above-mentioned structure, even if the plug body 3 is smaller than the barrel diameter of the cylinder 2, the heat-shrinkable film 5 is shrunk on the synthetic resin cover cap 8. Since they can be closely attached, they can be reliably sealed.

Further, since the collar portion 9a of the synthetic resin cover cap 9 has a diameter larger than that of the cylinder 2, the perforation 8 can be easily cut by pushing up the collar portion 9a toward the tip end. There is an advantage that the synthetic resin cover cap 9 can be removed. Further, the sheet-shaped lid member 6 can be similarly removed.

The drug-containing syringe of the present invention as described in the above embodiments is excellent in safety and hygiene and can be used with a great sense of security.

Further, the present invention is not limited to the above embodiment, and for example, as shown in FIGS. 5 (a) and 5 (b), one opening of the tubular heat-shrinkable film 5 is provided with a fusing seal 5d or the like. The adhesive may be adhered to form a bag, and the syringe may be covered from the other opening and heat-shrinked. In the case of forming the bag shape, the cover member 6 is integrally formed with the heat-shrinkable film by the fusing seal 5d, which has an advantage of simplifying the covering work.

Further, as shown in FIG. 6 (a), the whole is covered with a heat-shrinkable film 5, and as shown in FIG.
The plug body 3 and the cover member 6 are separated from each other by heat shrink films 5a, 5
It may be held by b.

The heat-shrinkable film used in the present invention is, for example, a single-layer or multi-layered known uniaxial or biaxial shrinkable film made of polyvinyl chloride, polyester, polypropylene, polyethylene, polystyrene or the like.
The thing of about 100 micrometers can be used. The heat-shrinkable film may be printed with an indication such as a drug component and a name.

Further, the cutting means for opening the heat-shrinkable film 5 is not limited to the above embodiment, and as shown in FIGS. 6A and 6B, a V-shaped cut or the like is formed on the surface of the heat-shrinkable film 5. 10a is applied, and an adhesive label for opening 1 on the notch
0 may be provided, or the opening tape may be attached to the entire length of the tubular heat-shrinkable film.

As described above, the constitution of the pharmaceutical injection syringe of the present invention can be arbitrarily set within the scope intended by the present invention.

[0023]

As described above, the drug-containing syringe of the present invention has a structure in which the plug body at the front end of the cylinder is held by the heat-shrinkable film and the opening at the rear end is covered, so that the plug body can be distributed or handled. It is safe and secure because it does not come off accidentally at times, and it is extremely hygienic because dust and the like do not enter the cylinder. Further, when the heat-shrinkable film is provided with a cutting means, the heat-shrinkable film can be easily removed when the drug-containing syringe is used.

[0024]

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of a drug-containing syringe of the present invention.

FIG. 2 is a perspective view showing a first embodiment of the drug-containing syringe of the present invention.

FIG. 3 is a vertical cross-sectional view showing a second embodiment of the drug-containing syringe of the present invention.

FIG. 4 is a view showing a tubular heat-shrinkable film used in the second embodiment of the present invention.

FIG. 5 (a) is a vertical cross-sectional view showing another embodiment of the drug-containing syringe of the present invention. (B) The figure which shows the heat-shrinkable film formed in the bag shape.

FIG. 6 (a) is a vertical cross-sectional view showing another embodiment of the medicine-containing injector of the present invention. (B) Partial top view of (a).

FIG. 7 is a vertical cross-sectional view showing another embodiment of the drug injector of the present invention.

FIG. 8 is a vertical cross-sectional view showing a conventional example.

[Explanation of symbols]

1: Drug injector 2: Cylinder 3: Plug 4:
Piston 5: Heat shrinkable film 6: Cover member 7: Drug
8: Cutting means 9: Synthetic resin cover cap

Claims (6)

[Claims] 1. A drug-filled syringe comprising a cylinder 2 in which a stopper 3 is mounted on an injection needle mounting part 2a, a piston 4 is inserted at a predetermined position, and a drug 7 is filled, and a rear end opening 2b of the cylinder 2 is provided. A drug-containing syringe characterized in that it is covered with a cover member (6) and the plug body (3) is held in the cylinder (2) by a heat-shrinkable film (5). 2. A syringe containing a drug, comprising a cylinder 2 in which a stopper 3 is attached to an injection needle mounting portion 2a, a piston 4 is inserted at a predetermined position, and a medicine 7 is filled in the syringe 3, and a cover cap 9 is attached to the stopper 3. Covered, cylinder 2
The rear end opening 2b is covered with the cover member 6,
The cover cap 9 is held in the cylinder 2 by contraction of the heat-shrinkable film 5, which is a drug-containing syringe. 3. The cover member 6 is made of a synthetic resin sheet-like lid material, and the sheet-like lid material is held in the cylinder 2 by a heat-shrinkable film 5. The drug-containing syringe according to claim 2. 4. The cover member 6 is made of a heat-shrinkable film 5d, and the rear end opening 2b of the cylinder 2 is covered by heat-shrinking the heat-shrinkable film 5d. The drug-containing syringe according to claim 1 or 2. 5. The heat-shrinkable film 5 is a tubular heat-shrinkable film fitted in a cylinder 2, and covers the plug body 3 and / or the cover member 6 when the syringe is used. The drug injector according to any one of claims 1 to 4, further comprising cutting means 8 for removing the heat-shrinkable film 5. 6. The heat-shrinkable film 5a for covering the plug body 3 and the heat-shrinkable film 5b for covering the cover member 6 are formed from separate films. Syringe with medicine.