KR101711090B1 - Disposable syringe having safety filter function - Google Patents

Disposable syringe having safety filter function Download PDF

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Publication number
KR101711090B1
KR101711090B1 KR1020150115567A KR20150115567A KR101711090B1 KR 101711090 B1 KR101711090 B1 KR 101711090B1 KR 1020150115567 A KR1020150115567 A KR 1020150115567A KR 20150115567 A KR20150115567 A KR 20150115567A KR 101711090 B1 KR101711090 B1 KR 101711090B1
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KR
South Korea
Prior art keywords
cylinder
needle
inlet
injection
neck
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KR1020150115567A
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Korean (ko)
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KR20170021135A (en
Inventor
고종원
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고종원
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Priority to KR1020150115567A priority Critical patent/KR101711090B1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/3145—Filters incorporated in syringes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The present invention relates to a disposable syringe having a safety filter function. In the disposable syringe of the present invention, a safety filter unit is installed and fixed to an inner bottom surface of a cylinder and an inner upper end of a neck, It is possible to prevent foreign substances such as glass particles from being injected together with the injection liquid in the injection process of injecting into the patient after the inhalation of the received injection liquid and to inject the injection liquid contained in the inside of the ampule or vial, The injection process of injecting the filtered injected liquid with only a single needle can be performed safely and easily without replacement of the needle.

Description

Disposable syringe having safety filter function [0002]

The present invention relates to a disposable syringe having a safety filter function, and more particularly, to a disposable syringe having a safety filter unit installed and fixed on an inner bottom surface of a cylinder and an inner upper end portion of a neck, It is possible to prevent foreign substances such as glass particles from being injected together with the injection liquid in the injection process of injecting the injection liquid into the patient after the inhalation of the injection liquid accommodated in the ampule or vial, The present invention relates to a disposable syringe having a safety filter function so that the injection process of injecting a filtered injected liquid with only a single needle can be safely and easily performed without replacement of the needle.

In general, syringes are used for administering drugs to the human body.

FIG. 1 is a view showing a state of use of the disposable syringe according to the prior art, and is an example of a use state in which an injection liquid in an ampoule is introduced and used. FIG. 2 shows a state of use of the disposable syringe according to the prior art, Fig. 8 is an example of a use state in which an injection liquid is introduced and used; Fig.

As shown in FIGS. 1 and 2, the conventional syringe is used as a disposable syringe for preventing infection.

1, the disposable syringe 1 according to the related art includes a syringe main body 10 having a storage space with its back opened so that an injection liquid can be stored therein, A piston 30 inserted in the space to allow the injection liquid to be sucked or discharged into the syringe body 10 and a coupling part 15 fitted to the connection part 15 provided at the distal end of the syringe body 10, (20) having a needle (25) and a needle (22) extending from the tip of the engaging part (25) and capable of being inserted into the body of a person.

In order to inject the injectable solution into the patient using the disposable syringe 1, the injection fluid must first be injected into the syringe body 10.

As shown in FIG. 1, the injectable solution is an integral ampoule 40 having a thin upper end portion 43 made of a glass bottle and a glass bottle as shown in FIG. 2, The injected liquid stored in the injected liquid bottle divided into vials 70 in which the rubber packing 71 is sealed is allowed to flow into the syringe body 10.

That is, when using the ampoule 40 integrally molded as a glass bottle, the user applies a shock to the upper portion 42 of the ampoule 40 by a finger or other tool to such an extent that the ampoule 40 is not broken, When the upper portion 42 is turned in one direction with the portion as a starting point, the upper portion is cut.

In this state, when the piston part 30 is pulled backward in a state in which the needle 22 of the needle 20 is contained in the injection liquid inside the ampule 40, The injection liquid 60 flows into the storage space of the storage container 10.

When the injector contained in the vial 70 is used, the tip of the needle 22 of the needle 20 is brought into contact with the rubber packing 71, When the piston 30 is pulled backward while being immersed in the injection liquid, the injection liquid is sucked into the syringe body 10.

When the needle 22 of the disposable syringe 1 containing the injection liquid is inserted into the body of the patient and then the piston 30 is pushed forward, the injected fluid 60 injected into the syringe body 10, As the needle 20 is discharged through the needle 22 of the needle 20, injection is performed to the patient.

However, when the injection liquid contained in the ampule 40 or the vial 70 is to be sucked into the syringe body 10, the needle 20 must be inserted into the ampule 40 or the vial 70, The liquid must be sucked in while the part is locked.

Therefore, there is a problem that the fine glass particles K generated when the ampule 40 is cut are sucked into the syringe together with the injection liquid, and the glass particles K contained together with the injection liquid 60 are injected into the patient.

Since the needle 22 penetrates the rubber packing 71 while forcibly penetrating the rubber packing 71 in the case of the vial 70, when the needle 22 penetrates the rubber packing 71, A rubber piece of the rubber packing 71 inserted in the needle 22 when the rubber piece tearing as a result of penetration into the needle 22 flows into the needle 22 to block the passage of the needle 22, There was a problem of being injected into the patient's body together with the injection solution.

More specifically, in the case of the ampule 40, a person (a nurse, a doctor, etc.) handling the syringe applies a constant impact to the upper portion 42 of the ampule 40 made of a glass bottle, The needle 22 of the needle 20 is inserted into the inside of the ampule 40 through the portion opened by cutting so that the injection liquid 60 is sucked into the syringe body 10 do.

However, when cutting the upper end portion of the ampule 40, microscopic glass particles K are formed at the cut portion that can not be visually recognized, and a part of the glass particles K fall to the outside of the ampule 40, (40) and settled in the injection liquid (60).

Therefore, when the needle 22 of the needle 20 is sucked in the injected liquid 60 while being immersed in the injected liquid 60, the fine particles of the glass particles K precipitated in the injected liquid 60, When injecting the injection fluid 60 into the patient in a state where the injection fluid 60 is sucked into the disposable syringe 1 as described above, the minute glass particles K (K) contained in the injection fluid 60 ) Was injected into the patient's body as it was.

When the injection liquid in the vial 70 is to be sucked into the syringe, as shown in FIG. 2, the injection needle is sucked in such a state that the needle 22 of the needle of the needle passes through the rubber packing. The outer circumferential edge portion of the needle 22 of the needle is forced to penetrate the rubber packing 71 while forcibly piercing it.

When the needle 22 of the needle of the needle passes through the rubber packing 71, the rubber piece that is torn while the rubber packing 71 is pierced flows into the needle 22 of the needle to close the passage of the needle, There is a problem that suction is not smoothly performed into the syringe for the syringe.

When the injection solution is injected into the patient, the rubber packing 71 inserted in the needle 22 of the needle of the needle is injected into the patient's body together with the injection solution. The rubber packing 71 ) Of the rubber is introduced into the body of the patient, resulting in a serious adverse effect on the patient's health.

In order to solve the above problems, a technique has been disclosed in which a filter capable of filtering glass particles is incorporated in a needle or a syringe body to filter glass particles contained in the injection solution.

However, when injecting the injection liquid into the syringe, the above-described technique can filter out foreign substances such as glass particles contained in the injection liquid. However, when the injected injection liquid is injected into the patient, So that the glass particles filtered by the filter are injected into the patient along with the injection solution.

In order to solve such a problem, Patent Document 1 (Korean Patent Registration No. 981586, Sep. 3, 2010, Registered) discloses an injection needle for sucking an injection liquid in an ampoule with a filter built therein, There is disclosed a technique in which a needle is directly separated from a needle to be injected into a patient to be used according to the intended use.

However, even in such a case, the handler who handles the syringe inserts the needle for sucking the injection liquid with the filter built in the main body of the syringe into the main body of the syringe so that the injection liquid is sucked into the main body of the syringe. There is a problem in that the needle is inserted into the main body of the syringe to incur the injection process to inject the injection fluid into the patient.

Therefore, it is possible to prevent foreign substances such as glass particles from being injected together with the injection liquid in the injection process of injecting into the patient after inhalation of the injection liquid contained in the ampule or vial, There is a need for a research and development of a disposable syringe having a safety filter function so that the injection process for injecting the patient after the inhalation can be made as a simple process of injecting the filtered injected liquid only by a single needle without replacement of the needle .

Registered Korean Patent No. 981586 September 3, 2010. Registered.

In order to solve the above problems, the present invention provides a safety filter unit installed and fixed over an inner bottom surface of a cylinder and an inner upper end portion of a neck provided at a lower end of a cylinder, And it is an object of the present invention to provide a disposable syringe having a safety filter function capable of preventing foreign substances such as glass particles from being injected together with an injection liquid during an injection process to be injected into a patient.

In addition, the technology according to the present invention includes a safety filter unit installed and fixed over an inner bottom surface of a cylinder and an inner upper end portion of a neck provided at a lower end of a cylinder, thereby injecting an injected solution contained in an ampule, The present invention has been made in view of the above problems, and it is an object of the present invention to provide an injection method and a method for injecting a filtered injection solution into a single injection needle without replacement of a needle.

The present invention for achieving the above-mentioned objects is as follows. That is, a disposable syringe having a safety filter function according to the present invention includes a cylinder in which a storage space is formed to open an upper surface thereof so that an injection liquid can be stored therein, a cylinder protruding and formed at a predetermined length from the center, A plunger including a body portion and a packing portion provided at a lower end of the body portion, the plunger being inserted downward through an opening portion of the cylinder to selectively flow the injection liquid into and out of the cylinder by an elevating operation; And an inner bottom surface of the cylinder and an inner upper end portion of the neck, and is fixed to the inside of the cylinder from an injection liquid bottle of an ampoule or a vial containing the injection liquid therein After injecting the injection containing the foreign substance, And a safety filter unit for injecting the injected filtered liquid into the patient's body through the needle of the needle by pressing the plunger, wherein the safety filter unit includes a coupling An inlet / outlet valve which is fixed and guides the inflow fluid from the outside to the outside of the cylinder after guiding the inflow fluid into the inside of the cylinder; And a central portion of the inlet / outlet valve is tightly fixed to the upper surface of the inlet / outlet valve so as to extend from an open upper end portion of the neck to the inner bottom of the cylinder, A guide and a filter which is fixedly coupled from above the inlet guide member to filter out foreign matter from the injection liquid containing the foreign matter introduced into the cylinder and guide the outflow guide member to the outside through the central portion of the inlet guide member and the center portion of the inlet / .

Preferably, the neck is formed with a coupling step at a certain distance downward from the opened upper end so that the inlet / outlet valve can be coupled to the upper end of the neck.

At this time, the inlet / outlet valve is fixedly coupled to the upper end of the neck so as to selectively guide the inflow of the infusion liquid from the outside into the inside of the cylinder, and then to guide the inflow out of the outside of the cylinder. A guide hole is formed through the guide hole, a fixing hole is formed at the center of the guide hole, and the guide groove is downwardly formed along the circumference of the fixing hole. The guide hole has a predetermined interval along the bottom surface of the guide groove, It is preferable that an outlet hole for guiding the injection liquid is formed through the through hole.

Also, the inflow guide piece may be guided to the inside of the cylinder via an open outer peripheral portion of the neck, the injection liquid guided through the inlet / outlet valve being lifted upward with respect to a certain outside area, So that the injected liquid passing through the filter from the inside of the cylinder is guided to the outside of the cylinder through the inlet / outlet valve so that the injected liquid passing through the filter is guided to the outside of the cylinder A communication hole is preferably formed through the through-hole.

In order to prevent the outer periphery of the inlet guide member from being lifted upward from the bottom of the cylinder when the plunger is lowered after the injection liquid flows into the cylinder, It is preferable that the lift preventing protrusion is formed to protrude upwards along the circumferential periphery of the contact.

Further, the filter is constituted of a cylindrical main body portion and a fixed protruding portion extending downward in a columnar shape from the bottom surface of the main body portion so that the inflow guide member can be closely fixed to the upper surface of the inlet / And the protruding portion may be fixedly coupled through a through hole formed at the center of the inlet guide member and a fixing hole formed through the center of the inlet valve.

It is preferable that the filter is provided in a fine mesh net type or nonwoven fabric type so that the injected liquid filtered out from the cylinder through the inlet / outlet valve can be flowed out to the needle side of the needle.

The lower end portion of the plunger may be in contact with the upper end of the filter to which the upper end of the filter is coupled and fixed from the upper portion of the inlet guide member. It is preferable that the upward depression is formed.

Effects of the disposable syringe having the safety filter function according to the present invention will be described as follows.

First, since the safety filter unit, which is installed and fixed on the inner bottom surface of the cylinder and the inner upper end portion of the neck provided at the lower end of the cylinder, is provided, in the injection process of injecting the injected liquid stored in the ampoule, vial, Can be prevented from being injected together with the injection liquid.

Secondly, since the safety filter unit is installed and fixed to the inner bottom surface of the cylinder and the inner upper end of the neck provided at the lower end of the cylinder, the injection process of injecting the injection solution contained in the ampule or vial, The injection process of injecting the filtered injected liquid with only a single needle can be performed safely and easily without replacement of the needle.

1 is a view showing the state of use of the disposable syringe according to the prior art, and showing an example of a use state in which an injection liquid in an ampoule is introduced and used.
FIG. 2 is a view showing a state of use of the disposable syringe according to the prior art, showing an operation state in which an injection liquid in a vial is introduced and used.
3 is a disassembled view of a disposable syringe having a safety filter function according to the present invention.
FIG. 4 is a cross-sectional view showing a principal part of a disposable syringe having a safety filter function according to the present invention. FIG.
FIG. 5 is an exploded perspective view showing a safety filter unit which is a main part of a disposable syringe having a safety filter function according to the present invention; FIG.
FIG. 6 is an example of a use state showing a step of injecting an injection liquid into a cylinder during a scanning process when using a disposable syringe having a safety filter function according to the present invention.
FIG. 7 is a view illustrating a use state of a disposable syringe having a safety filter function according to an embodiment of the present invention, in which injected fluid injected into a cylinder is injected into a patient's body through a needle during a scanning process.
FIG. 8 is a view illustrating an example of a use state in which injection of liquid injected into a cylinder into a needle of a patient is completed during injection of a disposable syringe having a safety filter function according to the present invention.

Hereinafter, a preferred embodiment of a disposable syringe having a safety filter function according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a sectional view showing a disposable syringe having a safety filter function according to the present invention, FIG. 4 is a cross-sectional view showing a principal part of a disposable syringe having a safety filter function according to the present invention, and FIG. Fig. 8 is a separation diagram showing a safety filter unit which is a main part of a disposable syringe having a safety filter function.

FIG. 6 is a view illustrating a use state of a disposable syringe having a safety filter function according to the present invention, illustrating a step of introducing an injection liquid into a cylinder during a scanning process, and FIG. 7 is a view showing a disposable syringe having a safety filter function according to the present invention. FIG. 8 is an explanatory view illustrating a use state of the injector injected into the cylinder during the injection process, and FIG. 8 is a view illustrating a state of use when injecting the disposable syringe having the safety filter function according to the present invention FIG. 2 is a view showing a use state of the injected liquid injected into the cylinder, which is injected into the body of the patient by flowing out to the needle side of the patient.

As shown in FIGS. 3 to 8, a disposable syringe having a safety filter function according to a preferred embodiment of the present invention has a storage space opened on its top surface to store an injection liquid therein, like a conventional disposable syringe, A cylinder 100 in which a neck 110 is protruded by a predetermined length from the center so as to communicate with the inside of the cylinder 100; A plunger 200 composed of a body part 210 and a packing part 220 provided at a lower end of the body part 210 and a neck part 210 of the cylinder 100, And a needle 300 fixed to the distal end of the hub 310,

Particularly, the disposable syringe having the safety filter function according to the present invention having the above-described structure is installed and fixed to the inner bottom surface of the cylinder 100 and the inner upper end portion of the neck 110, Or the vial injects the injection liquid containing the foreign substance into the cylinder 100 from the injection liquid bottle of the vial, the foreign matter is filtered and the foreign body is filtered through the needle 320 of the needle 300 by the pressure of the plunger 200, And a safety filter unit 500 for injecting the filtered injected liquid into the body of the user.

At this time, the safety filter unit 500 includes an inlet valve 510, an inlet guide member 520, and a filter 530.

Specifically, the inlet valve 510 is coupled to the upper end of the neck 110, which communicates with the interior of the cylinder 100, and guides the inflow of the injection fluid from the outside into the cylinder 100, 100).

At this time, it is preferable that the neck 110 has a coupling step 111 formed at a predetermined distance downward from the opened upper end so that the input / output valve 510 can be coupled to the upper end of the neck 110.

The inlet valve 510 is coupled to the upper end of the neck 110 to selectively guide the inflow of the injection liquid from the outside into the cylinder 100 and then to the outside of the cylinder 100.

To this end, the inlet / outlet valve 510 is formed with a flow hole 517 passing through the cylinder 100 at a predetermined interval along the outer circumference to guide the injection liquid.

In addition, a fixing hole 512 is formed at the center so that the outflow guide groove 513 is downwardly recessed along the fixing hole 512, and a predetermined interval is formed along the bottom surface of the outflow guide groove 513 And an outlet hole 514 for guiding the injection liquid from the inside of the cylinder 100 to the outside.

On the other hand, the inflow guide piece 520 constituting the safety filter unit 500 is fixed to the upper surface of the inlet / outlet valve 510 at a central portion thereof, And the injection fluid passing through the inlet / outlet valve 510 is selectively guided to the inside and outside of the cylinder 100.

The inlet guide member 520 is guided through the inlet / outlet valve 510 to the inside of the cylinder 100 via the opened outer peripheral portion of the neck 110, The injection liquid passing through the filter 530 is guided to the outside of the cylinder 100 when the plunger 200 is lowered.

The inlet guide member 520 is formed with a through hole 522 at the center thereof so that an injection liquid passing through the filter 530 from the inside of the cylinder 100 at a predetermined interval around the through hole 522 And a communication hole 524 through which the gas is guided to the outside of the cylinder 100 through the inlet valve 510.

The filter 530 is fixedly coupled to the upper portion of the inlet guide member 520 to filter foreign substances from the injection liquid containing the foreign substances introduced into the cylinder 100, And the central portion of the inlet / outlet valve (510).

Specifically, the filter 530 includes a cylindrical main body portion 531 and a main body portion 531 so that the central portion of the inlet guide member 520 can be closely attached to the upper surface of the inlet / And a fixed protruding portion 532 extending downward from the bottom in a cylindrical shape.

The filter 530 is fixed to the filter 530 by a fixing protrusion 532 formed in the center of the inlet valve 510 and a through hole 522 formed at the center of the inlet guide 520, And can be coupled and fixed through the hole 512. [

The filter 530 may be a fine mesh net type or a nonwoven fabric type so that the injected fluid filtered out from the cylinder 100 through the inlet valve 510 may be discharged to the needle 300 side. .

In the disposable syringe having the safety filter function according to the present invention as described above, when the plunger 200 is lowered after the injection of the injection liquid into the cylinder 100, It is important that the upward lifting phenomenon from the bottom of the inside of the cylinder 100 can be prevented.

Accordingly, it is preferable that the cylinder 100 has the lift preventing protrusion 101 protruded upward along the periphery of the bottom surface of the inlet guide member 520 where the outer periphery of the inlet guide member 520 closely contacts.

Further, when the plunger 200 is downwardly inserted through the upper opening portion of the cylinder 100 and the lifting operation is selectively performed, the bottom portion of the plunger 200 is engaged with the upper portion of the inflow guide piece 520, The upper end of the filter 530 may be closely contacted with the upper end of the filter 530. To this end, the packing part 220 of the plunger 200 may have a guide groove 221, It is preferable that the depression is formed.

According to the disposable syringe having the safety filter function according to the present invention as described above, the safety filter unit installed and fixed over the inner bottom surface of the cylinder 100 and the inner upper end of the neck 110 provided at the lower end of the cylinder 100, It is possible to prevent foreign substances such as glass particles from being injected together with the injection liquid during the injection process of injecting the injection liquid into the patient after the inhalation of the injection liquid contained in the ampule or vial.

The safety filter unit 500 installed and fixed on the inner bottom surface of the cylinder 100 and the inner upper end of the neck 110 provided at the lower end of the cylinder 100 is provided to prevent the injection liquid contained in the ampoules, The injection process of injecting the patient after the inhalation of the inhaler can be safely and easily performed without injecting the needle injected with the single needle alone without replacement of the needle.

In addition, since the injection process of injecting the filtered injected liquid with only a single needle without the need for replacement of the needle is performed safely and simply, it is possible to provide a needle having a needle for filtering and a needle for injecting the injection liquid into the body of the patient, The manufacturing cost of the disposable syringe can be remarkably reduced by applying only a single needle.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, the invention is not limited thereto. Various modifications may be made by those skilled in the art. Are included in the scope of the present invention.

100: Cylinder 101: Lift preventing protrusion
110: neck 111: coupling step
200: plunger
210: body part 220: packing part
221: Guide groove
300: Needle Needle
310: hub 320: needle
500: Safety filter unit
510: input / output valve 512: fixed hole
513: Outflow guide groove 514: Outflow hole
517: flow hole 520: inlet guide
522: through hole 524: through hole
530: filter 531:
532:

Claims (8)

A cylinder 100 in which an upper surface is opened to allow the injection liquid to be stored therein and a neck 110 is protruded from the center by a predetermined length so as to communicate with the inside of the cylinder 100; And a packing unit 220 provided at the lower end of the body unit 210. The plunger 220 includes a body part 210 and a packing part 220 disposed at a lower end of the body part 210, A needle 300 is fixed to the tip of a hub 310 selectively fixed to the neck 110 under the cylinder 100 and a needle 300 is fixed to the inner bottom of the cylinder 100. [ And an inner upper end portion of the neck 110. An injection liquid containing foreign substances is introduced into the cylinder 100 from an injection bottle of an ampoule or a vial in which the injection liquid is contained, And a safety filter unit (500) for injecting the filtered injected liquid into the body of the patient through the needle (320) of the needle (300) by pressing the plunger (200) Which is connected to the upper end of the neck 110 communicating with the inside of the cylinder 100 and guides the infusion fluid to the outside of the cylinder 100 after guiding the infusion fluid from the outside into the cylinder 100, (510); A central portion is closely fixed to the upper surface of the inlet valve 510 and is disposed from an open upper end of the neck 110 to an inner bottom of the cylinder 100. An injection fluid passing through the inlet valve 510 An inlet guide member 520 selectively guided to the inside and outside of the cylinder 100 and an inlet guide member 520 connected to the inlet guide member 520 from an injection liquid containing foreign substances introduced into the cylinder 100 And a filter (530) for filtering and guiding the foreign matter to the outside through a central portion of the inlet guide member (520) and a central portion of the inlet / outlet valve (510). The disposable syringe
In order to prevent the outer circumferential edge of the inflow guide member 520 from being lifted upward from the bottom of the cylinder 100 when the plunger 200 is lowered after the injection liquid flows into the cylinder 100,
Wherein the lifting protrusion (101) is protruded upward along the periphery of the bottom surface of the cylinder (100) where the outer periphery of the inflow guide member (520) is closely contacted.
The method according to claim 1,
Wherein the neck 110 is formed with a coupling step 111 spaced downward from the opened top by a predetermined distance so that the inlet valve 510 can be coupled to the upper end of the neck 110. [ Disposable syringe.
3. The method of claim 2,
The inlet valve 510 is coupled to the upper end of the neck 110 to selectively guide the inflow of the injection liquid from the outside into the cylinder 100 and then to the outside of the cylinder 100,
A flow hole 517 for guiding the injection liquid into the cylinder 100 is formed at a predetermined interval along the outer periphery,
A fixing hole 512 is formed at the center so that the outflow guide groove 513 is downwardly protruded along the fixing hole 512 and is formed at a predetermined interval along the bottom surface of the outflow guide groove 513, And an outlet hole (514) for guiding the injection liquid from the inside of the cylinder (100) to the outside is formed through the through hole (514).
The method according to claim 1,
The inlet guide member 520 is guided to the inside of the cylinder 100 via the open outer peripheral portion of the neck 110 while the inlet guide member 520 is lifted upward with respect to a certain outer surface area, The injected liquid passing through the filter 530 is guided to the outside of the cylinder 100 when the plunger 200 is lowered,
An injection fluid passing through the filter 530 from the inside of the cylinder 100 at a predetermined interval around the through hole 522 is formed in the center through the inlet and outlet valve 510, 100) through which a communication hole (524) for guiding the outside of the disposable syringe is formed.
delete The method according to claim 1,
The filter 530 includes a cylindrical main body portion 531 and a bottom portion of the main body portion 531 so that the inlet guide member 520 can be tightly fixed to the upper surface of the inlet valve 510 The fixing protrusion 532 is formed with a through hole 522 formed at the center of the inlet guide piece 520 and a through hole 522 penetrating through the center of the inlet and outlet valve 510 And a fixing hole (512) formed in the upper surface of the fixing hole (512).
The method according to claim 1,
The filter 530 is connected to the needle 100 through the inlet and the outlet valve 510 so that the injected fluid filtered out from the cylinder 100 flows out to the needle 300,
Characterized in that the disposable syringe is provided with a fine mesh net type or nonwoven fabric type.
The method according to claim 1,
The lower portion of the lower portion of the plunger 200 can be closely contacted with the upper end of the filter 530 to which the upper portion of the inlet guide member 520 is coupled,
Wherein the packing part (220) of the plunger (200) is formed with a guide groove (221) in which the upper end of the filter (530) is selectively inserted and guided upward at the center of the bottom surface.
KR1020150115567A 2015-08-17 2015-08-17 Disposable syringe having safety filter function KR101711090B1 (en)

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KR1020150115567A KR101711090B1 (en) 2015-08-17 2015-08-17 Disposable syringe having safety filter function

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KR20170021135A KR20170021135A (en) 2017-02-27
KR101711090B1 true KR101711090B1 (en) 2017-02-28

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KR101943869B1 (en) * 2018-07-03 2019-04-17 유공유체산업(주) A filter assembly for syringe and an integrated filter syringe using the same

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CN105343966A (en) 2015-12-07 2016-02-24 陈庆强 Medicine addition syringe

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JP2013192637A (en) * 2012-03-16 2013-09-30 Terumo Corp Drug solution delivery device
KR101532413B1 (en) * 2015-04-17 2015-06-30 고종원 Disposable syringe having safety filter function
CN105343966A (en) 2015-12-07 2016-02-24 陈庆强 Medicine addition syringe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101943869B1 (en) * 2018-07-03 2019-04-17 유공유체산업(주) A filter assembly for syringe and an integrated filter syringe using the same

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