TWM531288U - Syringe contamination prevention structure - Google Patents

Description

Syringe to prevent contamination of the structure

The present invention relates to a syringe, and more particularly to a syringe anti-contamination structure for preventing a mixed medicament from being contaminated by bacteria during operation when a mixed medicament is injected.

As shown in the first to third figures, the general syringe includes a syringe 10, an injection needle 20 and a push-pull rod 30, and the injection needle 20 is mounted on the front end of the syringe 10. The push-pull rod 30 The front end is combined with a piston 301, and the front end of the push-pull rod 30 is inserted into the syringe 10 for injection; currently all the liquid prescription drugs used for subcutaneous injection are sealed and filled in the injection medicament bottle. When subcutaneous injection therapy is required, the injection needle 20 is first inserted into the drug bottle via the bottle stopper, and then the push-pull rod 30 is pulled back to extract the liquid prescription drug from the inside into the syringe 10, and finally the injection needle is pulled away from the medicament. The patient can be injected subcutaneously outside the bottle.

However, it is often necessary to mix the medicaments during the injection. The steps of the operation are shown in the first to third figures. a. First, the injection needle 20 is first inserted into the first medicament bottle A via the bottle stopper, and the push-pull rod 30 is pulled backward. Extracting the liquid first medicament A1 from the first medicament bottle A into the syringe 10, b. withdrawing the injection needle 20 from the first medicament bottle A, and then inserting the injection needle 20 into the second medicament bottle B via the bottle stopper Pushing the push-pull rod 30 forwardly, the first medicament A1 in the syringe 10 is injected into the second drug bottle B, and is sufficiently mixed with the liquid second medicament B1 in the second medicament bottle B to become a liquid injection medicament M, c. Pulling the push-pull rod 30 back to extract the injecting medicament M in the second medicament bottle B to the syringe 10 In the middle, the injection needle 20 is pulled out of the second drug bottle B, and the patient can be subcutaneously injected.

It can be found from the above operation that when the push-pull rod 30 is pulled back in step a to extract the liquid first medicament A1 in the first medicament bottle A into the syringe 10, since the medical staff needs to hold the medicament bottle in one hand, the other hand operates The syringe, so the hand of the medical staff will mostly touch the shaft of the push-pull rod 30, leaving the bacteria on the hand on the shaft of the push-pull rod 30, and when step b is pushed forward, the push-pull rod 30 is pushed to the first in the barrel 4. When the medicament A1 is injected into the second medicament bottle B, the shaft of the push-pull rod 30 comes into contact with the inner wall of the syringe 10, and the bacteria of the shaft of the push-pull rod 30 adhere to the inner wall of the syringe 10, and then the step c is pushed backward. When the drawbar 30 draws the injection medicament M in the second vial B into the syringe 10, the injectable medicament M is invaded and contaminated by bacteria adhering to the inner wall of the syringe 10, and there is a medical risk, even in severe cases. It will endanger the lives of patients.

The creator has a medical risk because it is easy to cause mixed drugs to be contaminated by bacteria when the syringe is injected. It is a thought of creation and trial sample test by various ideas and ideas. After many revisions and improvements, I finally designed this creation.

The invention provides a syringe anti-pollution structure, the syringe comprises: a syringe, an injection needle, a push-pull rod and a telescopic isolation sleeve, wherein one end of the barrel is provided with a connection portion communicating with the interior of the barrel, and the other end is provided with a a support portion extending outwardly, the injection needle is mounted on the connecting portion of the syringe, the push-pull rod has a shaft, and one end of the shaft is coupled with a piston, and one end of the combined piston is inserted into the syringe The shaft of the push-pull rod is disposed adjacent to the piston, and a sleeve is disposed between the inner recess and the piston. The telescopic sleeve is provided with a bundle of solid holes at one end and a buckle portion at the other end. The sleeve portion of the push-pull rod is fixed, and the buckle portion is sleeved The support portion placed on the syringe is fastened and fastened.

The main purpose of the present invention is to provide a telescopic spacer between the syringe and the push-pull rod, and to prevent the bacteria on the push-pull rod from adhering to the inner wall of the syringe by the telescopic spacer when the mixed medicament is injected. Further, the mixed injecting agent is prevented from being contaminated by bacteria, and the safety of use of the syringe is improved.

The second purpose of this creation is that the telescopic isolation sleeve can be easily installed on an existing syringe, which has good practicability and low manufacturing cost.

[study]

10‧‧‧Syringe

20‧‧‧Injection needle

30‧‧‧Pushing rod

301‧‧‧Piston

A‧‧‧First drug bottle

A1‧‧‧First Pharmacy

B‧‧‧Second drug bottle

A2‧‧‧Second agent

M‧‧‧Injection

[this creation]

1‧‧‧Syringe

11‧‧‧Connecting Department

12‧‧‧Support Department

2‧‧‧Injection needle

3‧‧‧Pushing rod

31‧‧‧ shaft

32‧‧‧Piston

33‧‧‧Operation Department

34‧‧‧ Inside recess

35‧‧‧Bundle Department

4‧‧‧Flexible isolation sleeve

41‧‧‧ bundled holes

42‧‧‧Deduction

A‧‧‧First drug bottle

A1‧‧‧First Pharmacy

B‧‧‧Second drug bottle

A2‧‧‧Second agent

M‧‧‧Injection

The first figure is a schematic diagram of the action of the conventional syringe in extracting the first medicament in the first medicament bottle into the syringe.

The second figure is a schematic diagram of the action of the conventional syringe injecting the first medicament in the syringe into the second medicament bottle.

The third figure is a schematic diagram of the action of the conventional syringe to extract the medicament mixed in the second medicament bottle into the syringe.

The fourth picture is a three-dimensional exploded view of the creation.

The fifth picture is a cross-sectional view of the creation.

The sixth figure is a schematic diagram of the action of the present syringe to extract the first medicament in the first medicament bottle into the syringe.

The seventh figure is a schematic diagram of the action of injecting the first medicament in the syringe into the second medicament bottle by the creation syringe.

The eighth figure is a schematic diagram of the action of the creation syringe to extract the medicine mixed in the second medicament bottle into the syringe.

The ninth drawing is an end view of a preferred embodiment of the present invention.

The tenth figure is an end view of another preferred embodiment of the present invention.

Referring to the fourth and fifth figures, the syringe of the present invention prevents contamination. The syringe includes: a syringe 1, an injection needle 2, a push-pull rod 3, and a telescopic spacer 4, wherein one end of the syringe 1 is disposed The connecting portion 11 communicating with the inside of the barrel is provided with an extending portion 12 extending outwardly. The injection needle 2 is mounted on the connecting portion 11 of the barrel 1. The push rod 3 has a shaft 31. A piston 32 is coupled to one end of the body, and an operating portion 33 is disposed at the other end. The push-pull rod 3 is inserted into the barrel 1 at one end of the coupling piston 32. The shaft 31 of the push-pull rod 3 is disposed adjacent to the piston 32. 34. A recessed sleeve portion 35 is disposed between the recessed portion 34 and the piston 32. The telescopic spacer sleeve 4 is movable and retractable. The telescopic spacer sleeve 4 is provided with a bundle of fixing holes 41 at one end and a cross section at the other end. a bundle-shaped enlarged portion 42 is fixed to the sleeve portion 35 of the push-pull rod 3, and the fastening portion 42 is sleeved and fixed to the supporting portion 12 of the barrel 1 so that the expansion and contraction The spacer sleeve 4 is coupled between the syringe 1 and the push-pull rod 3, and the telescopic spacer sleeve 4 is located on the inner wall of the syringe 1 when pushed. The rod 3 is provided between the shafts 31, and the bellows 4 is folded between the inner wall of the barrel 1 and the recess 34 of the push-pull rod 3 when being folded.

When performing the mixed drug injection, the steps of the operation are as shown in the sixth to eighth figures. a. First, the injection needle 2 is inserted into the first drug bottle A via the bottle stopper, and the direction of the needle 12 is supported. Pulling the push-pull rod 3 to extract the liquid first medicament A1 in the first medicament bottle A into the syringe 1, b. withdrawing the injection needle 2 from the first medicament bottle A, and then inserting the injection needle 2 into the second via the bottle stopper In the drug bottle B, the push-pull rod 3 is pushed in the direction of the connecting portion 11 of the syringe 1, and the first medicament A1 in the syringe 1 is injected into the second drug bottle B to be in contact with the liquid second medicament B1 in the second drug bottle B. Fully mixed into a liquid injection medicament M, c. Pull the push rod 3 in the direction of the needle 12 support portion 12 to extract the second In the injection drug M in the drug bottle B to the syringe 1, the injection needle 2 is pulled out of the second drug bottle B, and the patient can be subcutaneously injected.

When the push-pull rod 3 is pulled back in the above step a to extract the liquid first medicament A1 in the first medicament bottle A into the syringe 1, although the hand of the medical staff will contact the shaft 31 of the push-pull rod 3, the bacteria on the hand will be Leaving the shaft 31 of the push-pull rod 3, but since the telescopic spacer 4 is disposed between the syringe 1 and the push-pull rod 3, when the step b is performed, the push-pull rod 3 is pushed forward to inject the first medicament A1 in the syringe 1. In the case of the second medicament bottle B, the push-pull rod 3 shaft 31 will only contact the inner wall of the telescopic isolation sleeve 4 and will not contact the inner wall of the syringe 10. Therefore, the step c is followed by pulling the push-pull rod 30 to extract the second medicament bottle B. When the injectable drug M is in the syringe 10, the injectable drug M is not contaminated by bacteria.

Furthermore, the bundle fixing hole 41 of the present invention can be a circular hole as shown in FIG. 9 or a slit as shown in FIG.

From the structure of the above specific embodiment, the following benefits can be obtained:

1 The creation syringe prevents the pollution structure, and a telescopic isolation sleeve 4 is arranged between the syringe 1 and the push-pull rod 3, and the movable expansion and contraction characteristics of the telescopic isolation sleeve 4 can be avoided during the injection of the mixed medicament to avoid medical personnel. The bacteria contacting the push-pull rod 3 shaft 31 of the hand adheres to the inner wall of the syringe 1, thereby preventing the mixed injecting agent M from being contaminated by bacteria and improving the safety of use of the syringe.

2. The creation of the syringe to stop the pollution structure, the telescopic isolation sleeve 4 can be easily installed on the existing syringe, both practical and cost considerations.

In summary, this creation has indeed reached a breakthrough structure, and has improved content of creation, while at the same time achieving industrial use and progress. When complying with the provisions of the Patent Law, it proposes a new type of patent application according to law. The ruling board examiner grants legal patent rights, To the pray.

1‧‧‧Syringe

11‧‧‧Connecting Department

12‧‧‧Support Department

2‧‧‧Injection needle

3‧‧‧Pushing rod

31‧‧‧ shaft

32‧‧‧Piston

33‧‧‧Operation Department

34‧‧‧ Inside recess

35‧‧‧Bundle Department

4‧‧‧Flexible isolation sleeve

41‧‧‧ bundled holes

42‧‧‧Deduction

Claims (6)

The utility model relates to a syringe for preventing pollution. The syringe comprises: a syringe, one end is provided with a connecting portion communicating with the inside of the barrel, and the other end is provided with a supporting portion extending outward; an injection needle is mounted on the connecting portion of the barrel; a push-pull rod having a shaft, one end of the shaft is coupled with a piston, one end of the combined piston is inserted into the barrel, the shaft of the push-pull rod is disposed near the piston; and a telescopic isolation The sleeve is movable and retractable, and one end of the fixing hole is disposed at one end, and a fastening portion is disposed at the other end, the bundle of the fixing hole is fixed to the sleeve portion of the push-pull rod, and the fastening portion is sleeved on the supporting portion of the needle barrel The knot is fixed. The syringe anti-contamination structure of claim 1, wherein the shaft of the push-pull rod is provided with an operating portion at an opposite end of the coupling piston. The syringe anti-contamination structure according to claim 1, wherein the shaft of the push-pull rod is provided with an inner recess near the piston, and the sleeve portion is disposed between the inner recess and the piston. The syringe anti-pollution structure according to claim 1, wherein the fastening portion of the telescopic spacer is an enlarged portion, and the cross section is substantially braided. The syringe anti-contamination structure according to claim 1, wherein the telescopic isolation sleeve has a round hole. The syringe anti-contamination structure according to claim 1, wherein the bundle of the telescopic spacer is a slit.