JPH076907Y2 - Syringe - Google Patents

Description

TECHNICAL FIELD The present invention relates to a syringe, and in particular, has a protection means for preventing an operator such as a doctor or a nurse from accidentally touching the injection needle. It concerns syringes.

2. Description of the Related Art Syringes are widely used in various fields such as medical treatment and other problems.
Usually, a syringe has a cylinder having an injection needle at its tip and a plunger fitted in the cylinder and removably fitted therein. It is used to inject blood or to collect blood etc. from patients.

In the operation of such a syringe, it is often found that an operator such as a doctor or a nurse, or a handler of the used syringe accidentally touches the needle of the syringe and injures a part of one's body. If the blood of the patient adheres to the injection needle at this time, the operator or the operator may be seriously affected.

In conventional syringes, the needle is covered with a cap or the like before use, and it is considered that the operator will not accidentally touch the needle, but after use, the needle is capped. In many cases, it is thrown away without care, and the operator or the operator often accidentally touches the needle of the syringe and gets scratched.

Object of the Invention The object of the present invention is to provide a safe syringe that completely prevents an operator, a handler, or the like from accidentally touching the injection needle and being injured by the operator or the operator before and after use.

Means for Solving the Problems The above object is achieved by the syringe according to the present invention. In summary, the present invention has a cylinder having an injection needle at its tip and a plunger removably fitted into the cylinder, and the cylinder is located at a position where the injection needle can be exposed during use. The syringe is characterized in that a protection means, which is adapted to extend completely over the injection needle except at times, is directly provided so as not to separate from the cylinder.

Embodiment Next, the syringe according to the present invention will be described in more detail with reference to the drawings.

FIG. 1 shows an embodiment of the syringe according to the present invention. In this embodiment, the syringe 1 has a cylinder 3 having an injection needle 2 at its tip, and a plunger 4 fitted into the cylinder 3 and detachably fitted therein, like a conventional syringe.

According to the invention, the protection means 10 is provided in such a way that it completely covers the injection needle 2. In this embodiment, the protection means 10 is
A cylindrical protective sheath that is detachably attached to the outer wall of the cylinder 3 and is frictionally engaged with the cylinder 3.
11 and a cylindrical sheath portion 12 extending from the attachment portion 11. Further, the mounting portion 11 is provided with a collar 13 suitable for moving the protection means 10 along the cylinder 3.
According to this embodiment, a stopper 14 for preventing the protection means 10 from coming off the cylinder 3 is formed at the tip of the cylinder 3 near the injection needle 2.

The protection means 10 is preferably integrally formed of transparent or translucent synthetic resin. Further, it is preferable that the tip of the cylindrical sheath portion 12 is formed so as to be inclined so that the syringe can be easily operated, as shown in the figure, but the tip of the cylindrical sheath portion 12 is outward from the tip of the injection needle 2. It is not limited to this as long as it is extended to.

The syringe 1 having the above-described structure is provided with a protection means 10 before use.
Is arranged at the lowermost position of the cylinder 3, as shown by the solid line in FIG. 1, and is positioned so as to completely cover the injection needle. In this state, the syringe 1 is applied to the patient, for example, the arm A, and the cylinder 3 is pressed toward the arm A, whereby the protection means 10 moves the outer wall of the cylinder 3 relatively upward, as shown in FIG. The injection needle 2 pierces the arm A at the same time as it slides as shown by the one-dot chain line.

After using the syringe 1, the needle 2 is removed from the arm A, and at the same time, the protection means 10 is moved downward until it is stopped by the stopper 14. As a result, the injection needle 2 is completely covered with the protection means 10 as before use, and an operator or the like is prevented from accidentally touching the injection needle.

FIG. 2 shows another embodiment of the present invention. This embodiment has the same structure as that of the above embodiment, but the protection means 10
A differs from the previous embodiment in that elastic means, in this embodiment, a helical spring 15 is provided between the mounting portion 11 and the collar 5 of the cylinder 3. According to the present embodiment, the protection means 10A is always urged downward by the elastic means 15, and when the syringe 1 is not used, the protection means 10A is located below the cylinder and the injection needle 2 is always covered. It is said to have a structure.

FIG. 3 shows another embodiment of the present invention. According to this embodiment, the protection means 10B comprises a helical spring arranged so as to completely cover the injection needle 2, and the upper end portion of the helical spring is attached to the spring holding portion 16 formed at the lower end portion of the cylinder 3. It is held so that it does not easily come off.

During use, the operator applies the protection means 10B, that is, the tip of the spiral spring to the patient, for example, the arm A, and the cylinder 3
The protective means 10 contracts and the injection needle 2 is pierced into the arm A by pushing the arm 2 toward the arm A.

After the syringe 1 is used, the needle 2 is pulled out from the arm A and the protection means 10B is also elastically stretched to automatically wind the spiral spring 1.
The 0 covers the injection needle 2, which prevents an operator or the like from accidentally touching the injection needle.

FIG. 4 shows an embodiment of a syringe having a structure including a protection means 10C configured by combining the protection means 10A and 10B described with reference to FIGS. 2 and 3. According to this embodiment, the protection means 10C is the plurality of safety protection means 1 described above.
A safer syringe having 0A, 10B is provided.

As described above, the syringe according to the present invention is provided with the protection means on the cylinder, and the protection means exposes the injection needle during use.
Except when not in use, the needle is configured to completely cover and extend, so the operator or operator will not accidentally touch the needle regardless of before and after use, and it is extremely safe. It has the feature of being

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a syringe according to the present invention. 2 to 4 are sectional views showing another embodiment of the syringe according to the present invention. 2: Injection needle 3: Cylinder 4: Plunger 10, 10A to 10C: Protective measures

Claims (1)

[Scope of utility model registration request] 1. A cylinder having an injection needle at its tip and a plunger removably fitted in the cylinder, the cylinder being located at a position where the injection needle can be exposed when in use, and not in use. Is a syringe characterized in that a protective means extending completely over the injection needle is directly provided so as not to separate from the cylinder.