KR200166124Y1 - Safety syringe - Google Patents

Abstract

In addition to this, the syringe cannot be reused by injecting a syringe once used to the patient, and after inserting the syringe into the cylinder, the needle should be inserted into the cylinder. The third party can prevent the damage caused by the needle sticking in advance.The needle is attached to the front of the cylinder by the needle insertion slot, and the fitting is formed on the protruding rod of the tip of the push rod inserted into the cylinder. The connecting rod is formed at the rear end of the insertion slot so that the protruding rod of the pusher engages the needle fixture to retract the needle, so that the needle inserter with the needle inserted is pulled into the cylinder and stored. It is not damaged by transmission of disease such as hepatitis and AIDS Being able to prevent relates to a safety syringe.

Description

Safety Syringe

This article relates to a safety syringe that prevents a third party from being damaged by an injectable needle. In particular, after using a syringe, the needle is pulled into the cylinder of the syringe to store the needle in the cylinder. The safety syringe to prevent the third party to be stabbed by the needle of the syringe after use, and to prevent the reuse of the syringe repeatedly by breaking the rod after use.

Conventional syringes are the mainstream of disposable syringes to prevent the reuse of the injection in the syringe after human injection, these conventional disposable syringes are equipped with technical means to prevent reuse to prevent reuse of the syringe used once You can see that.

However, in the conventional disposable syringes, the needle is left or discarded with the needle inserted as it is, so that a third party can be damaged by the exposed needle. It did not solve the damage of the third party by the needle of the syringe.

That is, the patient's blood remains in the needle of the used syringe, and the patient's disease (AIDS, infection, etc.) when a medical worker such as a doctor or nurse or another third party is pierced by the needle of the used syringe. There is a risk of getting infected, and these examples have been reported.

Therefore, the subject of the present invention is that after using the syringe, the patient is protected from the needle used by the needle used to protect the needle by the cylinder by simply pulling and fixing the needle inside the cylinder of the syringe without the need to remove the needle arbitrarily. It is about a safety syringe to prevent the disease from being infected by third parties.

As a prior patent document for such a safety syringe, Utility Model Publication No. 91-4532 and Utility Model Publication No. 96-13409 published and filed in advance by the present applicant can be found. A new safety application was filed under No. 7783 for a disposable safety syringe.

The subject matter of the present invention is to provide a safety syringe which has a simpler structure and operates more reliably compared to the above-listed syringe.

In the disposable syringe used by injecting the injection solution to the patient, the bundle of needles are fixed to the pushpin, and then the safety syringe is pushed back by inserting the needle into the cylinder. 91-4532 and Public Utility Model Nos. 96-13409 and 1999 Utility Model Application No. 7783.

The single-use safety syringe pre- filed by the present applicant has a number of parts and has the disadvantage of having a lot of difficulties in manufacturing due to high precision. This paper has a small number of parts. The structure is simple, easy to manufacture, and designed to provide a safety syringe that eliminates the possibility of malfunction.

1-partial cross-sectional exploded view of the present article;

Figure 2-Partial exploded perspective view of the present article.

3-A perspective view of the pushpin in the present article.

Figure 4-Cross section of the syringe body excluding the needle in this article.

Figure 5-In this paper, the stick and the needle insertion tool except the needle are combined

Syringe body cross section of the one.

Fig. 6-The part shown to break and remove the straw after the completion of the injection in this paper.

Cross-section.

Figure 7-Push the broken rod into the syringe cylinder

Section showing blockage of entrance.

Figure 8-Front view of the needle insertion tool in this article.

9-A cross-sectional view taken along the line A-A in FIG.

Fig. 10-A cross-sectional view taken along the line A-A of Fig. 1 in another form of Fig. 1;

Fig. 11-B-B cross sectional view of Fig. 1;

Fig. 12-C-C cross sectional view of Fig. 8;

Figures 13-8 are cross sectional views taken along line E-E.

Figures 14-8 are cross sectional views along the line F-F.

In a conventional syringe having a cylinder into which an injection liquid is charged, a piston and a push rod are inserted inside the cylinder, and a needle is attached to the cylinder tip, whereby the cylinder 11, the needle 21, and the needle 21 are provided. The insertion needle inserting tool 31 and the push rod 41 are inserted into the respective parts, and a plurality of protrusions 13 are formed at the tip of the insertion hole 12 of the cylinder 11, and the cylinder ( 11) a stop ring jaw (15) and a hook ring jaw (16) is provided at the rear end of the inner peripheral surface, and has a needle holder (32) into which the needle (21) is fitted at the center of the needle insert (31), Into the outer surface 33 of the outer cylindrical needle (32) outer cylindrical (33) grooves of the 'b' shape formed with a wide opening so that the projection (13) formed on the inner peripheral surface of the insertion hole 12 of the cylindrical cylinder 11 is easily coupled ( 34), the rear of the O-ring 35 is inserted, Upper and lower fasteners 43 having a plurality of insertion grooves 37 inside the needle insertion slot 36, and locking jaws 43 'formed at the front end portions of the push rods 41 into which the piston 42 is inserted. And a space portion 47 is formed at the front end of the push rod 41 into which the piston 42 is inserted, and the cutting groove 45 to be easily branched by bending the push rod 41 in front of the push rod 41. To form a stop, the rear stop piece (51) and the cutting recess (51) is formed on the rear stop piece (50) and the center portion in the rear of the piston (42) of the push rod (41). 45) between the center of the push rod is to form a central space portion 53 in the longitudinal direction.

This proposal having such a structure is to be operated as follows.

The cylindrical outer surface 33 of the needle insertion tool 31 is provided with a plurality of protrusions 13 formed on the inner circumferential surface of the insertion hole 12 of the cylinder 11 from the rear end of the cylinder 11 to the inside of the cylinder. ) Is pushed into the end of the groove (34) of the '-' shaped groove is formed in a wide inlet to fasten the cylinder (11) and the needle insertion tool 31 integrally.

Thereafter, the push rod 41 into which the piston 42 has been inserted is pushed into the rear end of the cylinder 11, and the needle 21 is fastened to the needle insertion tool 31 immediately before using the syringe. As in the method, the push rod 41 is retracted to suck the injection liquid into the cylinder 11, and then the push rod 41 is advanced to inject the injection liquid into the patient.

When the needle insertion tool 31 is fixed inwardly from the rear end of the cylinder 11, a plurality of protrusions 13 formed in the insertion hole 12 at the tip of the cylinder 11 have an outer surface 33 of the needle insertion tool 31. When pushed into the circumferential portion of the groove-shaped groove 34 having a wide inlet, the stop ring 15 of the inner circumferential surface of the cylinder 11 has a rear end portion of the needle needle insert 31. The o-ring 35 inserted into the needle insertion tool 31 comes into close contact with the inner circumferential surface of the cylinder 11 to maintain reliable airtightness.

The projection 13 formed on the inner circumferential surface of the cylinder 11 when the needle insertion tool 31 is pushed into the insertion hole 12 at the tip of the cylinder 11 to fix the needle insertion tool 31 to the tip of the cylinder 11. Is caught in the groove of the inlet position of the rear end of the 'b'-shaped groove 34, that is, the circumferential portion is formed in the outer peripheral surface of the needle insertion tool 31, which is the needle 21 When the screw is inserted into and fixed to the jig 31, the needle insertion tool 31 is rotated together with the needle 21 so that the protrusion 13 protruding into the insertion hole 12 of the cylinder 11 is a 'b' shaped groove. It will be positioned at the end of 34.

In this way, the needle inserter 31 and the needle 21 are fixed to the tip of the cylinder 11, and the push rod 41 is pushed into the cylinder 11 to assemble the completed syringe. When the injection solution is sucked into the cylinder 11, the injection solution is injected into the patient, the needle 21 is removed from the patient, and then pushed forward by applying a force to the pusher 41 (see Fig. 5). The piston 42 is squeezed by the space portion 47 formed inside the piston 42 to reduce its volume, and at the same time, each of the locking jaws 43 'of the upper and lower fasteners 43 formed at the tip of the pusher 41 is a needle. It is fixed inside the insertion groove 37 formed outside the center hole of the insertion tool 31, and the front end of the pusher 41 and the rear end of the needle insertion tool 31 are integrally fastened. After that, when the rod 41 rotates, the rod 41 rotates the needle insertion tool 31 itself.

As such, the needle insertion tool 31 rotated by the push rod 31 is rotated together with the 'a' shape groove 34 formed on the outer surface 33 and inserted into the 'a' shape groove 34 in the circumferential direction. The protrusion 13 formed on the inner circumferential surface of the end portion of the cylinder 11 was rotated to a straight portion of the 'a'-shaped groove 34, and then, when reversing the push rod 41, the protrusion 13 was' a' shaped. The front portion of the groove 34 is moved forward and at the same time, the needle inserting tool 31 and the needle 21 inserted therein are reversed into the cylinder 11 to enter the cylinder 11.

The pushing rod 41 is reversed until the pushing barrel jaw 50 reaches the engaging ring jaw 16 of the cylinder 11, and thereafter, the cutting groove 45 of the pushing rod 41 is bent to cut. do. When the push rod 41 cut in this way is pushed in from the front of the cylinder 11, that is, the projection 13 formed inside the insertion hole 12 in front of the cylinder 11 in the rear stop piece 51 of the push rod 41 When pushed to the inner side, the rear stopper 51 of the push rod is inserted into the protrusion 13 to be brought into contact with the push rod 41, so that the push rod 41 fitted into the insertion hole 12 does not fall easily.

Therefore, the needle inserter 31 into which the needle 21 is inserted is inserted into the cylinder 11, and the inlet is inserted into the cut rod 41 to block the inlet of the cylinder 11 so that the needle There is no fear of leaving.

In this study, the needle of the syringe injected to the patient is inserted into the cylinder, which is the main body of the syringe, so that the needle of the used syringe can be prevented from being damaged by a third party as well as medical workers such as doctors and nurses. Will be.

Since the syringe has a sharp needle, it requires careful attention both before and after use. In particular, the syringe requires a great deal of care in handling the needle with the blood on the patient.

In particular, a disease such as hepatitis or AIDS can be transmitted to a third party by the blood of the patient, so syringes injected into hepatitis or AIDS patients require special care.

However, after inserting the needle of the used syringe into the cylinder as in this paper, the needle will be safely placed in the cylinder when cutting and removing the rod, and push the cut rod into the cylinder to block the cylinder opening. When the needle is inserted into the cylinder, there is no fear of drawing out of the cylinder so that the needle can be safely stored and processed.

In this way, this proposal cannot reuse the syringe once used, and it is very useful for preventing the spread of the disease by the used needle, which can occur in one bay by preventing the damage of a third party by the needle. It is an idea.

Claims (1)

In a conventional syringe having a cylinder into which an injection liquid is charged, a piston and a push rod are inserted inside the cylinder, and a needle is attached to the cylinder tip, whereby the cylinder 11, the needle 21, and the needle 21 are provided. The insertion needle inserting tool 31 and the push rod 41 are inserted into the respective parts, and a plurality of protrusions 13 are formed at the tip of the insertion hole 12 of the cylinder 11, and the cylinder ( 11) a stop ring jaw (15) and a hook ring jaw (16) is provided at the rear end of the inner peripheral surface, and has a needle holder (32) into which the needle (21) is fitted at the center of the needle insert (31), In the outer surface 33 of the outer cylindrical needle 32, the projection 13 formed on the inner circumferential surface of the insertion hole 12 of the cylindrical cylinder 11 is easily formed to be inserted into the 'b' shaped groove (b) 34), the packing 35 is inserted in the rear, Upper and lower fasteners 43 having a plurality of insertion grooves 37 on the outside of the needle insertion tool 36, and locking jaws 43 'formed at the front end portions of the push rods 41 into which the piston 42 is inserted. ), A space portion 47 is formed inside the tip end portion of the push rod 41 into which the piston 42 is inserted, and the cutting groove 45 is formed in the push rod 41 so as to be easily branched by bending the push rod 41. The rear stop piece 51 is formed on the stop ring 50 and the center portion of the push rod 41, and is formed on the center of the push rod between the rear stop piece 51 and the cutting groove 45 of the push rod 41. Safety syringe, characterized in that to form the central space portion 53 in the longitudinal direction.