JPH0522184Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a syringe for preventing infection. More specifically, when attaching a protector to a used syringe needle, there is no risk of accidentally injuring one's fingers or other parts of the body with the syringe needle, and this prevents infections such as AIDS and hepatitis from being caused by used syringe needles. Regarding syringes.

<Prior Art> In recent years, infection of blood-borne diseases such as hepatitis and AIDS among people engaged in testing and treatment has become a problem.

Conventionally, used syringes are generally disposed of as they are, or after the needle is removed from the syringe, the needle and the syringe with the needle removed (hereinafter referred to as the syringe) are disposed of separately. It is common for people to accidentally injure their fingers when removing the needle from the syringe, and if the blood adhering to a used needle contains bacteria, there is a risk that the bacteria may enter the human body through the wound and cause infection. .

In addition, in order to avoid injury to fingers when removing the needle, and to eliminate the risk of accidentally injuring hands or fingers with the needle during disposal or in the process of incineration after disposal, the needle of a used syringe is After attaching a protector to the syringe, the needle is removed from the syringe or the protector is removed from the syringe, and the needle and syringe with the protector attached are disposed of separately, but conventional protectors have an open end. Because of the small size of the injection needle, when inserting the needle into the protector, the needle tip may fail to insert into the protector, causing injury to fingers and the like, which also poses a risk of infection.

Therefore, in order to prevent infections caused by such needles, we have developed a needle that can be used to remove the needle from the syringe without touching the needle directly. A release tool has been proposed (U.S. Patent No.
No. 4466538, No. 117564, No. 117564, No. 117564, No. 117564, No. 62-
No. 189702).

In addition, to solve the problem of inserting a needle into the latter protector, we have developed a protector with a flange on the open end, and a disk-shaped protector with an insertion hole in the center. A protector with a slit having a width larger than the outer diameter of the needle in the longitudinal axis direction of the protector has been proposed.

<Problem to be solved by the invention> However, the above-mentioned syringe needle detachment device is troublesome because it is necessary to go to the place where the syringe needle is installed and remove the syringe needle. There is no economic advantage if the number of times the injection needle is used per day is small.

In addition, when the protector has a flange on the open end, when the needle is attached to the syringe and stored, the needle easily separates from the cylinder during storage.
When storing the injection needle alone, the injection needle is bulkier than when using a conventional protector, which increases transportation costs and storage costs, which is uneconomical.

Furthermore, a disc-shaped collar with a protector insertion hole is uneconomical, and a protector with a slit is problematic because there is a risk of foreign matter adhering to the needle during the packaging and sterilization process. be.

This was done in consideration of this idea and the above circumstances.
The purpose of the present invention is to provide an economical infection prevention syringe that has extremely low risk of being infected with hepatitis, AIDS, etc. when the syringe is disposed of.

<Means for Solving the Problems> In order to solve the above problems, the present invention includes a syringe, an injection needle inserted into a nozzle at the tip of the syringe, and a needle that covers the injection needle and is attached to the tip of the syringe. The protector is a cylindrical container consisting of a large-diameter syringe insertion portion with an open end and a small-diameter injection needle accommodating portion with a closed end, the inner diameter of which is removably attached to the syringe insertion portion. The infection prevention syringe is tapered from the cylindrical part to the needle accommodating part.

<Function> According to the present invention, since the opening of the protector has a large inner diameter that can be attached to the tip of the syringe, it is easy to insert the needle tip of the injection needle, and the protector can be attached to the injection needle. There is almost no risk of injury to fingers or the like due to the injection needle during operation.

Furthermore, since the protector and the syringe are connected, the needle will not come off the syringe during storage, and there is no risk of foreign matter adhering to the needle during the packaging and sterilization process.

<Example> Next, an example of the present invention will be described based on the drawings.

FIG. 1 is a front view of an infection prevention syringe according to an embodiment of the present invention, a sectional view along the longitudinal axis of the protector shown in FIGS. 2 and 1, and FIG. 3 is a sectional view of the protector shown in FIG. 1. FIGS. 4A and 4B, which are views viewed from the open end side, are sectional views along the longitudinal axis of main parts (open end portion) showing other embodiments of the protector portion, respectively.

As shown in FIG. 1, the syringe of the present invention includes a syringe 1, an injection needle 3 attached to a nozzle 6 at the tip of the syringe 1, and a removable crown that covers the injection needle 3. It consists of a protector 2 that is attached.

The syringe 1, like a normal syringe, has a cylindrical barrel 4 with a nozzle 6 protruding from its tip as a drug injection port, and is inserted into the barrel 4.
It consists of a plunger 5, which has a gasket (not shown) attached to its tip that slides on the inner wall of the barrel 4, and is made of the same material as a normal syringe.

The shape of the tip of the barrel 4 varies depending on the type of connection between the tip of the barrel 4 and the protector 2.
In the case of a type that fits with the protector 2, it may have the same shape as a normal syringe, but in the case of a type that screws or locks with the protector 2, there is a screw thread (not shown) at the tip of the barrel 4. It is necessary to provide a protrusion in the form of a ring (not broken) or annular (it may be broken in the shape of a 〓).

As shown in FIGS. 2 and 3, the protector 2 has a syringe insertion portion 22, which has an inner diameter equal to or slightly larger than the outer diameter of the syringe 1 so that it can be attached to the tip of the syringe 1. ,
It is composed of a portion tapered from the syringe insertion portion 22 and then formed to have an equal diameter, that is, an injection needle accommodating portion 21, and is made of the same material as a normal injection needle protector.

The syringe insertion part 22 is the open end 2 of the protector 2.
4, and the inner diameter of the open end 24 is the same as that of the syringe 1.
It is formed to be slightly larger than the joint part with the syringe 1 so as to facilitate insertion thereof, and after being reduced in diameter in a step-like manner, it is continuous with the tapered part of the injection needle accommodating part 21. In the case of a protector that is fitted with a syringe, a plurality of ribs 26 extending in the longitudinal direction are formed on the inner wall of the protector 2 at the joint portion with the syringe 1, as shown in FIG.

This rib 26 is a part that supports the syringe 1, and the number thereof is preferably 4 to 6.

A and B in FIG. 4 respectively show the main parts of the protector, that is, the connecting part with the syringe, in the case of a type in which the syringe and protector are screwed together and in the case of a type in which the syringe and protector are locked.
In the case of a screw type, a thread groove 27 is formed on the inner wall portion, and in the case of a lock type, a spiral protrusion 28 is formed on the inner wall portion. The spiral protrusions 28 are different from so-called screw threads, and have a large width between the protrusions, so that when the protector 2 is rotated counterclockwise, they are combined with the annular protrusions formed on the syringe. It's summery.

The needle accommodating portion 21 has a closed end 9 and a tapered portion 23 whose diameter is reduced from the syringe insertion portion 22, and the inner diameter of the tapered portion 23 is set to a size such that the hub 7 of the injection needle 3 can fit therein. It is formed. The equal diameter portion having the smallest inner diameter, which is continuous with the tapered portion 23, has an inner diameter larger than the outer diameter of the cannula 8 of the injection needle 3.

Note that the injection needle 3 is a normal injection needle, so a description thereof will be omitted.

<Effects of the invention> As is clear from the above explanation, if the syringe of the present invention is used, the protector can be attached to the injection needle very easily, and the operation of attaching the protector to the injection needle is easy. Since there is no risk of accidentally injuring one's fingers or the like with the needle during injection, it is possible to eliminate infections such as hepatitis and AIDS due to such accidents.

Further, since the protector is attached to the tip of the syringe so as to accommodate the injection needle, the blood inside the syringe will not leak out after the syringe is disposed of, which is sanitary.

Furthermore, it is possible to provide a syringe for infection prevention that is simple in shape and inexpensive.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention, and FIG.
The figure is a sectional view along the longitudinal axis of the protector shown in FIG. 1, FIG. 3 is a plan view of the protector shown in FIG. 1, and FIGS. 4A and B are sectional views of main parts showing other embodiments of the protector It is. Explanation of main symbols, 1...Syringe, 2...Protector, 3...Syringe needle, 21...Syringe needle housing part,
22...Syringe insertion part.

Claims (1)

[Claims for Utility Model Registration] 1. Consists of a syringe, an injection needle inserted into a nozzle at the tip of the syringe, and a protector that covers the injection needle and is removably attached to the tip of the syringe. The protector is a cylindrical container consisting of a large-diameter syringe insertion part with an open end and a small-diameter needle accommodating part with a closed end, and the inner diameter thereof tapers from the syringe insertion part to the needle accommodation part. Infection prevention syringe being reduced in size. 2. The infection prevention syringe according to claim 1, wherein the syringe and the protector are fitted. 3. The syringe for preventing infection according to claim 1, wherein the syringe and the protector are locked. 4. The infection prevention syringe according to claim 1, wherein the syringe and the protector are screwed together.