KR101691218B1

KR101691218B1 - syringe

Info

Publication number: KR101691218B1
Application number: KR1020100139450A
Authority: KR
Inventors: 김근배
Original assignee: (주)가이버; 김근배
Priority date: 2010-12-30
Filing date: 2010-12-30
Publication date: 2016-12-30
Also published as: KR20120077486A

Abstract

The present invention relates to a disposable syringe that incorporates a filter in a section for sucking and discharging a drug solution of a disposable syringe to prevent foreign substances from being contained in a drug solution to be administered when the drug solution is filled from the ampoule and the patient, The filter structure is formed with suction ports and discharge ports on both sides so that the suction port and the discharge port are opened only in one direction by a check valve structure so that the suction path and the discharge path are separated from each other A filter for preventing the foreign substances from being discharged from the discharge port of the chemical solution so that the foreign matter filtered by the filter remains in the syringe while being prevented from being administered to the patient and the filtered foreign matter To prevent re-administration to the patient, One ever will.

Description

Disposable syringe capable of simultaneous filtering and injection.

The present invention relates to a disposable syringe, and more particularly, to a disposable syringe which is capable of simultaneously filtering after foreign substances are sucked when a drug solution is sucked.

Generally, a syringe is used for administration to an infected patient, and a disposable syringe is mainly used in order to prevent a secondary infection from occurring during the injection process. In such a syringe, a liquid or powder is mixed or only a liquid is injected In this case, the liquid phase is mainly contained in an ampoule made of glass or plastic. In order to suck up the liquid phase with the syringe, when the ampoule is filled, the glass or plastic impurity powder is sucked simultaneously with the liquid phase, And thus, many side effects are worried about being injected at the same time.

Therefore, in recent years, the use of two disposable syringes to solve these problems is uneconomical, and more expenses are incurred for the incineration of such syringes.

Therefore, the present invention can improve the simple structure of the syringe so that when the syringe is filled with the drug solution, the foreign matter can be completely filtered out through the filter, while the drug is injected into the patient without replacement of the injection needle And to prevent the foreign matter filtered out from being re-administered to the patient.

To this end, the present invention is characterized in that a filter structure is built in a fixing member formed integrally with the injection needle, and the filter structure has an inlet and an outlet formed on both sides thereof so that each inlet and outlet are opened only in one direction A filter for preventing the foreign substances from being discharged is installed in the discharge port of the chemical liquid so that the foreign matter filtered by the filter is prevented from being administered to the patient while remaining in the syringe.

Therefore, since the line for sucking and discharging the chemical liquid is divided, there is no fear that the foreign substance will be injected at the time of discharging the chemical liquid. Accordingly, it is convenient because it is possible to perform the injection immediately after sucking the chemical liquid, It is possible to respond quickly to emergency patients.

In addition, even if minute foreign substances are contained in the chemical liquid sucked by the syringe, they are filtered by the filter attached to the discharge port and remain in the cylinder, so there is no possibility of foreign matter being discharged when the chemical liquid is injected to the patient, It is.

1 is a perspective view showing a first embodiment of the present invention.
FIG. 1A is a partially enlarged cross-sectional view of the filter structure of FIG.
2 is a cross-sectional view showing the chemical liquid suction structure of the first embodiment of the present invention
3 is a cross-sectional view showing the chemical liquid discharging structure of the first embodiment of the present invention
4 is a perspective view showing a second embodiment of the present invention.
4A is a partially enlarged cross-sectional view of the state in which the filter structure of FIG. 4 is assembled
5 is a cross-sectional view showing the chemical liquid suction structure of the second embodiment of the present invention
6 is a cross-sectional view showing the chemical liquid discharge structure of the second embodiment of the present invention
7 is an exploded perspective view showing a filter structure of a conventional syringe.
7A is a sectional view showing a filter structure of a conventional syringe

Hereinafter, preferred embodiments according to the present invention will be described with reference to the accompanying drawings.

1 and 2, the injection needle 200 is assembled to the syringe body composed of the cylinder 100 and the piston 110 by using the fixing member 210, 210 are provided with a filter structure 1 having a suction port 1a and a discharge port 1b so that the suction port 1a and the discharge port 1b can be opened only in opposite directions, will be.

That is, when the piston 110 is pulled backward in a state where the piston 110 is housed in the cylinder 100 having the inner space so that the drug is filled, the cylinder 100 is evacuated to generate a suction force, When the ampule is removed and then the piston 110 is pushed in the opposite direction to generate pressure inside the cylinder 100, the chemical solution filled in the cylinder 100 is discharged to the inside of the cylinder 100, Is discharged to the outside through the discharge port 1b so that the patient can be injected.

For this purpose, in forming the suction port 1a and the discharge port 1b, cylindrical pipelines 10a and 10b are formed in the filter structure 1, and the channels 11a and 10b are respectively provided with shielding films 11a The curtains 11a and 11b are formed so as to protrude outward in a hemispherical shape and the curtains 11a and 11b are opened only in one direction when the cutouts 12a and 12b are formed at the center, .

2, when a suction force is generated inside the syringe cylinder 100 by pulling the piston 110 at the time of sucking the chemical liquid, the cut-out 12a of the curtain film 11a located at the suction port 1a is transferred to the cylinder When the piston 110 is continuously pulled, the chemical liquid contained in the ampoule can be filled into the syringe cylinder 100.

Conversely, in the case of injecting the drug solution contained in the syringe to the patient, if the piston 110 is pushed to generate a drain output in the direction of the injection needle as shown in FIG. 3, the slit of the skin layer 11b located at the discharge port 1b The improvement 12b is opened in the direction of the needle, and if the piston 110 is continuously pushed, the chemical solution filled in the cylinder can be administered to the patient.

In this case, the principle that the suction port 1a and the discharge port 1b are opened only in one direction is that the respective curtain films 11a and 11b are formed in the reverse direction of the semicircular shape. Therefore, A difference in drag is generated between the inlet 1a and the outlet 1b so that when the piston is pulled and pressure is generated in the inner direction of the cylinder 1, the cutout 12a formed in the curtain 12a of the inlet 1a is opened When the pressure is generated in the direction from the cylinder 100 to the injection needle 200 by pushing the piston in the opposite direction, the suction port 1a of the discharge port 1b is opened and the discharge port 1b is kept closed. The suction port 1a is kept closed while the discharge port 1b is opened.

In addition, when the chemical solution is discharged on the pipe 10b of the discharge port 1b by the filter 13, foreign substances such as minute pieces of glass or rubber pieces can not pass through the pipe 13 and remain in the cylinder. The drug solution to be administered can be safely administered in a state in which no foreign substance is contained.

4 and 4A, the filter structure 1 is formed by attaching a silicone rubber 21 having a through hole 21a and a cut-out 21b formed on both sides of the filter plate 20, The suction port 1a and the discharge port 1b of the filter structure 1 have a check valve structure so that the suction port 21b extends only to the outside of the filter 20 so that the silicone rubbers 21 are symmetrical So that the suction port 1a and the discharge port 1b are respectively opened corresponding to the suction force and the discharge power generated when the piston 110 is pulled or pushed by the opening of the incision 21b due to the extension of the incision 21b. You can do it.

5, when a suction force is generated inside the syringe cylinder 100 by pulling the piston 110 when the chemical liquid is sucked, a cut-out 21b is formed in the suction port 1a of the two silicone rubbers 21 The incision 21b of the positioned silicone rubber 21 is opened in the cylinder inner direction and when the piston 110 is continuously pulled, the chemical solution contained in the ampule can be filled in the syringe cylinder 100 will be.

On the other hand, when the user intends to administer the drug solution contained in the syringe, the user pushes the piston 110 to generate a drain output in the direction of the needle as shown in FIG. 6, The incision 21b is opened in the direction of the needle, and when the piston 110 is continuously pushed, the chemical solution filled in the cylinder can be administered to the patient.

At this time, the principle that the suction port 1a and the discharge port 1b are opened only in one direction is such that each of the cut-outs 21b is blocked by the filter plate 20 and spreads in only one direction, When the pressure is generated in the inner direction of the cylinder, the incision 21b on the suction port 1a is opened so that the suction port 1a is opened and the discharge port 1b is kept closed. On the other hand, When pressure is generated in the direction of the needle 200 from the cylinder 100, the incision 21b on the side of the discharge port 1b opens and the discharge port 1b is opened and the suction port 1a is kept closed will be.

In addition, when the slot 20a is formed at a position where the inlet 1a is formed, the filter plate 20 allows the foreign substances to be introduced into the filter without being caught by the filter when the chemical solution is sucked into the cylinder of the syringe. Thereby preventing foreign matter from remaining on the outside of the filter plate 20 in a suction state and allowing the entire amount to flow into the cylinder.

Therefore, even when the injection needle in which the chemical liquid is sucked is used as it is without replacing the injection needle, foreign substances do not remain on the outer side of the inlet 1a when the chemical liquid is injected into the patient, The foreign substances contained in the chemical solution can not be discharged by the filter plate 20 and remain inside the cylinder, so that foreign substances can be prevented from being discharged to the chemical solution injected into the patient.

At this time, since the shape of the slot hole 20a formed in the filter plate 20 is formed to be long in accordance with the reduction, the inner peripheral surface of the slot hole 20a supports the periphery of the cut-away portion 21b, The incision 21b located at the suction portion 1a is not opened to the outside but only the incision 21b at the side of the discharge port 1b is opened and the chemical solution is discharged.

At this time, the cover plate 22 is further attached to the outer side of the silicone rubber 21, so that the portion where the cut-outs 21a and 21b are formed is easily opened while supporting the outer periphery of the silicone rubber 21 It is preferable that the cover plate 22 should have two through holes 22a at corresponding positions of the through hole 21a of the silicone rubber 21 and the cutout 21b.

Preferably, the filter plate 20, the silicone rubber 21 and the cover plate 22 are formed as one body by forming axial holes 20c, 21c and 22c in the center and riveting them, It is preferable that the cover 21 is made of silicon or rubber having elasticity and the cover plate 22 is made of a plastic injection molding so that the filter structure 1 can be maintained in an outer shape without being deformed arbitrarily.

At this time, if the protruding portion 22b is formed on the outer periphery of the cover plate 22, the filter structure 1 can be prevented from being arbitrarily withdrawn while being inserted into the fixing member of the injection needle, The suction or discharge of the chemical solution can be performed while maintaining a fixed state without flowing even when strong suction force or double output occurs.

1: Filter structure 1a:
1b: outlet
10a, 10b: channel 11a, 11b:
12a, 12b: section improvement 13: filter
20: filter plate 20a: slot hole
20c:
21: Silicone rubber 21a: Through hole
21b: Sectional improvement 21c: Shaft hole
22: cover plate 22a: through hole
22b: projecting portion 22c: shaft hole
100: cylinder 110: piston
200: injection needle 210: fixing member

Claims

A piston 110 is housed in a cylinder 100 having a space for filling a drug and a suction force or a discharge power is generated by a sliding operation of the piston 110 so that the liquid is sucked or discharged through the needle 200 The filter structure 1 contained in the disposable syringe has inlet and outlet ports 1a and 1b on both sides thereof and the inlet 1a and the outlet port 1b of the filter structure 1 are connected to each other The disposable syringe being separated from the suction line and the discharge line of the chemical liquid by being opened only in the reverse direction,
The suction port 1a and the discharge port 1b formed in the filter structure 1 are formed with pipelines 10a and 10b so that the curtains 11a and 11b are formed at the other end of each of the pipelines 10a and 10b The curtains 11a and 11b are formed so as to protrude outward in a hemispherical shape and have cutouts 12a and 12b at the center thereof so that the curtains 11a and 11b can be opened only in one direction, And a filter (13) is built in the pipeline (10b) of the discharge port (1b) so that the foreign matter is not discharged to the outside through the injection needle but remains.

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The method according to claim 1,
In the filter structure 1, a through hole 21a and a silicon rubber 21 formed with a cut-out 21b are attached to both sides of the filter plate 20 so that the cut-out 21b is located only outside the filter 20 , And the silicone rubber (21) is symmetrically attached to both sides of the silicone rubber (21) to open the opposite sides of the silicone rubber (21) in opposite directions due to the spreading of the cut-out (21b).

The method of claim 3,
The filter structure 1 has a cover plate 22 attached to the outside of the silicone rubber 21 which is in close contact with both surfaces of the filter plate 20. The cover plate 22 has a through hole of silicon rubber and a cut- And two through-holes (22a) are formed at corresponding positions.

The method of claim 3,
Wherein the filter plate (20) is formed with a slot hole (20a) at a position where the suction port (1a) is formed.

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5. The method of claim 4,
Characterized in that the filter structure (1) has rivets (20c, 21c, 22c) formed at the center of the filter plate (20), the silicone rubber (21) and the cover plate (22).