JPH035824B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a cap for handling the needle of a disposable syringe, and in particular, the needle tip is bent and attached to the tip of the cap to completely seal the entire needle. This invention relates to a syringe needle handling cap.

[Conventional technology]

Conventional syringes are made of glass, and after use, the needle can be removed from the syringe body (not shown) and sterilized by boiling, allowing repeated use. However, although such glass syringes with removable needles have the advantage of being able to be used repeatedly, once used, the tip of the needle loses its sharpness, which can cause pain to patients. Boiling sterilization was no longer adopted because it was time-consuming and could not guarantee complete sterilization, and in recent years, disposable syringes made of plastic, which can be used once and then discarded, have been introduced. It has become widely popular due to a combination of factors including affordability, the establishment of safety through sterile packaging and disposable packaging, and above all, the ease of disposable use.

FIG. 4 is a side view illustrating an example of the disposable syringe. A fixing seat 42 for fitting and fixing the locking chip 32 is protruded from the tip.

[Problem that the invention seeks to solve]

By the way, the above disposable syringe 4 is
Since the injection needle 3 is fixed to the fixed seat 42 at the tip of the outer cylinder 40, it is exposed and cannot be disposed of as is. Since the outer cylinder 40 is firmly attached to the outer cylinder 40, it cannot be easily removed from the outer cylinder 40, which poses a major obstacle in disposing of the outer cylinder 40. Another method is to crush the injection needle 3 along with the syringe 4, but this is expensive and the crushed pieces may contain needle pieces that may be contaminated with bacteria. It is difficult to say that this is an ideal treatment method as it may lead to subsequent contamination.

The present invention was made against the background of the above-mentioned circumstances, and was devised for use in disposable syringes.The present invention is designed for use in disposable syringes by sealing the cover of the syringe needle, and by bending the needle tip and attaching it to the inside of the syringe. An object of the present invention is to provide a needle disposal cap which is fixed to a needle disposal cap.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a needle disposal cap having at least one stage pipe structure for covering the outside of a needle protruding from the tip of a disposable syringe, which includes: a hollow cylinder; The cap body is shaped like a cap and has a stacked tube structure with at least one stage, and a needle tip fitted to the tip of the cap body, and the needle tip is connected to a tip outer cylinder having a single bottom surface. , a needle tip which is fitted and fixed into the inside of the tip outer cylinder and has a substantially cylindrical shape having a hardness at least comparable to the needle tip hardness of an injection needle, and has a hemispherical concave needle receiving part formed on its lower end surface; The main purpose is to be structured.

The cap body is characterized in that the wall surface is uniformly thick in the axial direction at a substantially central portion inside the hollow cylinder to form a curved stop for the injection needle.

[Effect]

Based on the above-mentioned means, the present invention covers the outside of the injection needle protruding from the tip of a disposable syringe, and the needle tip fitted to the tip of the cap body is pressed down to prevent the injection needle from turning. When abutting the needle tip, the needle tip passes through the bottom surface of the tip outer cylinder and is pressed against a recessed hemispherical needle receiver formed on the bottom surface of the needle tip, which has a hardness at least comparable to the needle tip hardness. Therefore, it is bent along the curved surface of the needle receiver, and at the same time it abuts or bites into the bottom surface of the tip outer cylinder and is locked to the needle tip. At this time, since the above-mentioned bending stop is formed at the center of the inside of the cap body, escape due to deflection of the injection needle is minimized, so that the tip of the injection needle is effectively and reliably bent.

〔Example〕

A preferred embodiment of the present invention will be described based on the accompanying drawings.

In FIG. 1, the injection needle disposal cap 2 of the present invention covers the entire injection needle 3 from the outside toward a fixed seat 42 protruding from the center of the distal end surface of the outer cylinder 40 of the disposable syringe 4. (See Figures 2 to 4)
It consists of a hollow cylindrical cap body 22 and a needle tip 23 that is tightly fitted inside the distal end of the cap body 22.

The syringe needle disposal cap 2 according to the present invention has a stacked connection structure with at least one or more stages of insertion/extraction pipes, and can actually be a single stage type without a stacked pipe connection part or a multistage type with three or more stages. Although this is possible, a two-stage type is adopted in this embodiment, which is easy to manufacture and can accommodate different needle lengths to some extent.

First, the cap body 22 has a tapered hollow cylindrical shape, and a needle tip 23 having a substantially small cylindrical shape is tightly fitted inside the tip thereof. Also,
A crown 26 whose diameter is larger than the diameter of the needle tip 23 is extended from the tip of the needle tip 23 to prevent the needle tip 23 from sinking into the cap body 22. .

In FIGS. 2 and 3, the cap body 22
is provided with a bending stopper in which a portion of the inner wall becomes thicker in the axial direction at approximately the center of the interior of the hollow cylinder, and the thicker bottom end of the bending stopper is provided to protrude from the center of the tip of the outer cylinder 40 of the syringe 4. The injection needle 3 is tightly fitted to the outer circumferential wall surface of the fixed seat 42 so that the entire injection needle 3 is housed inside. The needle tip 23, which is tightly fitted to the tip of the cap body 22, is a tip outer cylinder 2 in the shape of a tip whose upper end is fully open and whose lower end is sealed.
4, and a needle tip 25 formed of a metal material or the like having a substantially small cylindrical shape and having a hardness at least comparable to the hardness of the needle tip. This needle tip 2
The tip of 5 is the crown 26, and the lower end surface thereof is a hemispherical concave needle receiver 252.

The tip outer cylinder 24 is preferably formed of an elastic plastic material or the like, and the needle tip 25 is fitted into the hollow part thereof, and the tips are integrally fixed to each other by a fixing means such as an adhesive. is desirable. Furthermore, in principle, no opening is provided on the bottom surface of the tip outer cylinder 24, but a through hole may be provided for the injection needle 3 to pass therethrough. can.

Note that the tip inner circumferential wall surface of the cap body 22 is formed with a "burr" 222 that slightly protrudes in the axial direction, and is slightly recessed around the entire circumference near the lower end of the outer circumference of the tip outer cylinder 24. By being engaged with the stop groove 242, the needle tip 23
is designed to prevent it from falling out of the cap body 22.

Next, the operation of the present invention will be explained based on FIGS. 1 to 3.

First, as shown in FIG. 1, when the needle disposal cap 2 of the present invention is placed over the needle (not shown) of the disposable syringe 4, the needle is inserted into the cap body 22.
and the needle tip 23.

As shown in FIG. 2, the thickened lower end 223 of the cap body 22 connects the injection needle 3 and the locking tip 32.
, and is fitted into the outer circumferential wall surface of a fixed seat 42 protruding from the tip of the outer cylinder 40 of the syringe 4 . At this time, the needle tip of the injection needle 3 passes through the bending stop 221, is tightly fitted to the tip of the cap body 22, and is immediately adjacent to the needle tip tip 23, which is locked by the burr 222 and the stop groove 242. It reaches the bottom.

As shown in FIG. 3, when the crown 26 provided at the tip of the needle tip 23 is struck against a table or floor surface, the needle tip 23 descends into the cap body 22 and the needle tip of the injection needle 3 enters the needle tip 23 and comes into pressure contact with the needle receiver 252, which has a hardness at least comparable to the needle tip and has a hemispherical concave shape, so that the needle receiver 25
The needle tip is bent along the curved surface of 2. At this time, the injection needle 3 tries to absorb the bending force by bending by the inner radius of the cap main body 22. Therefore, the bending stop 221 provided at the center of the inside of the cap main body 22 prevents the bending of the injection needle 3. At the same time, the needle tip is effectively and reliably bent using the portion where the injection needle 3 penetrates the bottom surface of the tip outer cylinder 24 as a fulcrum.
Therefore, the needle tip bent along the curved surface of the needle receiving part 252 is locked to the needle tip tip 23 by coming into contact with the bottom surface of the tip outer cylinder 24 or by biting into the bottom surface made of strong plastic or the like. ,
The syringe needle handling cap of the present invention bends the tip of the syringe needle 3 and attaches the syringe needle 3 to the tip of the syringe 4.
It will be fixed so as to seal it.

〔Effect of the invention〕

The present invention safely disposes of disposable syringes, which conventionally have been troublesome to dispose of, by using a processing cap with a very simple structure, with almost a single touch, so that the disposal can be carried out easily and quickly.

Further, since the needle handling cap of the present invention has an extremely simple structure, both material costs and manufacturing costs can be kept to a low level.

Furthermore, the needle disposal cap of the present invention has the needle tip bent and the cap itself is attached and sealed to the tip of the syringe from which the needle protrudes, so it has excellent effects in terms of safety and epidemic prevention measures. It is something that can be raised.

[Brief explanation of the drawing]

Fig. 1 is a perspective view illustrating the state in which the needle handling cap according to the present invention is used for the injection needle of a disposable syringe, Fig. 2 is a sectional view of the main part taken along the line - Fig. FIG. 4 is a side view illustrating an example of a disposable syringe. 2... Syringe needle handling cap, 22... Cap body, 221... Curving stopper, 222... Burr, 23...
Needle tip, 24... Tip outer cylinder, 242... Stop groove, 25... Needle tip, 252... Needle receiver, 26
…Crown.

Claims (1)

[Scope of Claims] 1. A needle disposal cap having at least one stacked tube structure for covering the outside of a needle protruding from the tip of a disposable syringe; It consists of a cap body with a stacked tube structure and a needle tip fitted into the tip of the cap body, and the needle tip is connected to a tip outer cylinder having a single bottom surface and a tip outer cylinder in the form of a tip. The needle tip has a substantially cylindrical shape having a hardness at least comparable to the hardness of the needle tip of an injection needle, and has a hemispherical concave needle receiving portion formed on the lower end surface of the needle tip. Needle disposal cap. 2. The cap body has a wall surface that is uniformly thick in the axial direction at a substantially central portion of the interior of the hollow cylinder to form a curved stop for the injection needle. Needle disposal cap as described in . 3. The syringe needle handling cap according to claim 1, wherein the cap body has a burr formed on the inner wall surface of the distal end thereof to slightly protrude in the axial direction. 4. The needle handling cap according to claim 1, wherein the tip outer cylinder has a slightly recessed stop groove around the lower end of its outer periphery.