KR101765785B1 - Safety filter and syringe having the same - Google Patents

Safety filter and syringe having the same Download PDF

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Publication number
KR101765785B1
KR101765785B1 KR1020150088989A KR20150088989A KR101765785B1 KR 101765785 B1 KR101765785 B1 KR 101765785B1 KR 1020150088989 A KR1020150088989 A KR 1020150088989A KR 20150088989 A KR20150088989 A KR 20150088989A KR 101765785 B1 KR101765785 B1 KR 101765785B1
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KR
South Korea
Prior art keywords
cylinder
injection liquid
filter
injection
passage
Prior art date
Application number
KR1020150088989A
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Korean (ko)
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KR20170000434A (en
Inventor
이재영
임현철
황원철
Original Assignee
주식회사 아모라이프사이언스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to KR1020150088989A priority Critical patent/KR101765785B1/en
Priority to PCT/KR2016/006531 priority patent/WO2016208923A1/en
Publication of KR20170000434A publication Critical patent/KR20170000434A/en
Application granted granted Critical
Publication of KR101765785B1 publication Critical patent/KR101765785B1/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
    • A61M5/3145—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
    • 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
    • A61M5/31—Details
    • A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves

Abstract

A syringe safety filter of the present invention comprises a housing formed integrally with a needle and connected to a cylinder, an inflow passage provided inside the housing for infusing the infusion fluid into the cylinder, a discharge passage through which the infusion fluid injected into the cylinder is discharged, And a filter member provided in an inflow passage of the inflow passage for filtering out foreign substances contained in the injection liquid. When the injection liquid is filled in the cylinder, the foreign matter is collected in the collection chamber, When the injection liquid is discharged, the injection liquid can be prevented from passing through the filter member to reduce the injection liquid discharge pressure, and it is convenient to inject the injection liquid into the patient.

Description

[0001] SAFETY FILTER AND SYRINGE HAVING THE SAME [0002]

TECHNICAL FIELD The present invention relates to a syringe, and relates to a safety filter and a syringe having the safety filter that can prevent foreign substances such as glass fragments and rubber fragments from being injected into a patient.

Generally, a syringe includes a cylinder in which an injection solution is stored, a needle, which is mounted in front of the cylinder, and a plunger that is installed in a linearly movable manner to the cylinder and sucks the injection solution into the cylinder or discharges the injection solution stored in the cylinder to the outside .

In such a syringe, the upper part of the ampule glass bottle containing the injection solution is cut to open the ampule glass bottle, and the injection needle is inserted through the opened space to store the injection solution into the cylinder.

In the case of a vial container in which a syringe is sealed and sealed with a rubber seal, the syringe is inserted into the cylinder by inserting a needle unit into the syringe.

However, when the ampule glass bottle is cut, the glass sludge is introduced into the ampule glass bottle and mixed with the injection solution. Then, when the injection needle is inserted into the vial container through the rubber stopper, the rubber debris penetrates into the injection needle or the inside of the vial container

When glass fragments or rubber fragments are mixed with the injection solution and injected into the patient's body, various diseases such as phlebitis and sepsis are caused. In order to solve the problem of such a syringe, a syringe having a filter in the needle unit has been developed.

A conventional filter needle is composed of a needle unit and a fixing member for fixing the needle unit to the syringe cylinder as disclosed in Japanese Patent Publication No. 10-1222881 (Jan. 10, 2013), and a filter is built in the fixing member A filter structure is built in the fixing member, and the filter structure has a suction port at the rim portion of the circular body and a discharge port at the central portion, respectively, so that the suction path and the discharge path And the inlet and outlet of each of the inlets and outlets can be opened only in different directions by the check valve structure. When the chemical liquid is filled, the foreign substances introduced into the syringe cylinder are not discharged to the outside through the needle unit when the chemical liquid is discharged, And a rear portion of the tube portion formed in the form of a circular pipe is provided on the discharge port side, And a cross section of the filter contacting the chemical solution is formed to be wider than a cross sectional area of the discharge port so that the pressure is dispersed when the chemical solution is discharged.

However, in the conventional filter needle as described above, when the chemical liquid is filled in the syringe cylinder, the foreign substance contained in the chemical liquid is filled into the syringe cylinder like the chemical liquid, and the chemical liquid is discharged through the filter when the chemical liquid is discharged from the syringe cylinder. There is a problem that it is difficult to inject the drug solution into the patient.

In particular, the syringe is mainly used by nurses. Since the nurse has a lot of women, when injecting the injection solution by pressing the plunger of the syringe after inserting the needle unit into the patient, it is difficult to inject the chemical solution when the discharge pressure of the chemical solution increases. .

Patent Document 1: JP-A-10-1222881 (Jan. 10, 2013)

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an apparatus and a method for filtering an injection liquid such that foreign substances are trapped in the collection chamber when the injection liquid is filled in the cylinder, And a syringe provided with the safety filter.

Another object of the present invention is to provide a safety filter which is provided with a check valve in front of the collecting chamber of the passage member to prevent the injection liquid from flowing into the foreign substance collecting chamber when discharging the injected liquid into the cylinder, One syringe.

It is a further object of the present invention to provide a method for manufacturing a membrane filter, which uses a nanofiber web membrane having three-dimensional micropores provided by electrospinning as a filter member to greatly increase porosity, And to provide a safety filter and a syringe having the same that can minimize the resistance and are thus easy to use.

It is a further object of the present invention to provide a method and a device that can improve the efficiency of injection filtration by providing a passage member with a first filter member for filtering when the injection liquid is injected into the cylinder and a second filter member for filtering when the injection liquid is discharged from the cylinder, A filter, and a syringe having the same.

In order to accomplish the above object, the present invention provides a syringe safety filter comprising: a housing formed integrally with a needle and connected to a cylinder; an inflow passage provided in the housing and into which the infusion fluid flows; And a filter member disposed in the inflow passage of the inflow passage and filtering the foreign substances contained in the infusion liquid.
The housing may include a first housing in which a needle is integrally formed, and a second housing that is hermetically coupled to the first housing and is fitted to the cylinder.
The filter element may comprise a nanofiber membrane of a three dimensional network structure having micropores provided by electrospinning of a polymeric material.
The filter member may also include a porous support and a nanofiber membrane of a three dimensional network structure having micropores deposited on the porous support and provided by electrospinning of the polymeric material.
The diameter of the nanofiber may be 0.1 to 3.0 mu m.
The porosity of the membrane may be 70-80% of the total area of the membrane.
The porous support may be formed of a nonwoven fabric or a mesh made of metal or resin.
A first check valve is formed at the center of the passage member to open a one-way flow through which the injection liquid flows into the cylinder, in front of the collecting chamber, and a collecting chamber connected to the inflow passage to collect foreign substances contained in the injection liquid is formed. And a filter member may be provided on the rear side thereof.
A cover member to which the filter member is fixed is hermetically coupled to an open rear side of the collection chamber, and a second check valve is provided in the cover member to block return of the injection solution introduced into the collection chamber to the collection chamber .
The discharge passages may be formed at a plurality of intervals in the circumferential direction on the outer side of the collecting chamber, and a third check valve may be formed to open only the one-way flow through which the injected liquid is discharged from the cylinder.
The discharge passage may be equipped with an auxiliary filter member for filtering the foreign substances contained in the injection liquid discharged from the cylinder.

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In the syringe safety filter of the present invention, a collection chamber for collecting foreign substances is formed in the passage member, so that when the injection liquid is filled in the cylinder, the foreign substance is filtered so as to be collected in the foreign substance collection chamber. When the injection liquid is discharged, It is convenient to reduce the infusion pressure and thus inject the infusion into the patient.
In addition, a check valve is provided in front of the collection chamber to prevent the injection liquid from flowing into the collection chamber when discharging the injection liquid filled in the cylinder, thereby preventing the injection liquid from being wasted.
Further, the filter member may be formed in the form of a nanofiber web having three-dimensional micropores provided by electrospinning to greatly increase the porosity, thereby minimizing the flow resistance generated when the injection liquid passes through the filter member.
In addition, a first filter member for filtering when the injection liquid is injected into the cylinder and a second filter member for filtering when the injection liquid is discharged from the cylinder are provided, thereby improving the injection liquid filtering performance.

1 is an exploded perspective view of a syringe according to an embodiment of the present invention.
2 is a cross-sectional view of a safety filter according to an embodiment of the present invention.
3 is a cross-sectional view of a safety filter according to another embodiment of the present invention.
4 is a cross-sectional view of a filter member according to an embodiment of the present invention.
5 and 6 are operational diagrams of a safety filter according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience. In addition, terms defined in consideration of the configuration and operation of the present invention may be changed according to the intention or custom of the user, the operator. Definitions of these terms should be based on the content of this specification.

Referring to FIGS. 1 and 2, a syringe according to an embodiment of the present invention includes a cylinder 10 filled with an injection liquid, a cylinder 10 installed to be linearly movable in the cylinder 10, And a safety filter 20 which is mounted in front of the cylinder 10 and integrally formed with the injection needle 22 and removes foreign matter contained in the injection liquid.

The safety filter 20 includes housings 24 and 26 fitted to the cylinder 10 and integrally formed with the injection needle 22 and an injection nozzle 22 disposed inside the housings 24 and 26, A passage member 30 provided with an inflow passage 32 for introducing the infusion liquid and an ejection passage 34 through which the infusion liquid stored in the cylinder 10 is discharged and a passage member 30 for filtering the foreign substances contained in the injection solution, And a filter member (44).
The housings 24 and 26 include a first housing 24 in which the injection needles 22 are integrally formed and a second housing 24 which is hermetically coupled to the first housing 24 and which is fitted into the inlet portion 14 of the cylinder 10. [ And a second housing (26) coupled thereto.

The first housing 24 and the second housing 26 can be mutually screwed, mutually fitted, and attached by bonding. That is, a male screw portion is formed at the end portion of the first housing 24, a female screw portion is formed at the inner surface of the end portion of the second housing 26 so that they can be screwed to each other, and the end portion of the first housing 24 And can be fitted and fixed to the inner surface of the second housing 26.

The outer surface of the passage member 30 may be fixed to the inner surface of the first housing 24 and fixed to the inner surface of the first housing 24 by bonding. The passage member 30 may be made of a resin material capable of elastic deformation, Or rubber material.

The passage member 30 is formed at its center with an inflow passage 32 through which the injection liquid flows into the cylinder 10. A plurality of the inflow passages 32 are formed in the circumferential direction on the outer surface of the inflow passage 32, And a discharge passage 34 through which the filled injected liquid is discharged is formed.

A one-way flow (40) is formed in the center of the passage member (30) in which a collecting chamber (40) for collecting foreign substances contained in the injection liquid flowing into the inflow passage (32) The first check valve 50 is opened.

The first check valve 50 includes an elastic rib 52 protruding in a convex spherical shape in the cylinder direction and a cutout hole 54 formed in the center of the elastic rib 52 and opened when pressure is applied from the inside, .

The first check valve 50 opens the flow when the pressure is applied to the convex portion from the concave portion and opens the flow hole. When the pressure from the convex portion to the concave portion is applied, the incision hole 54 is closed Keep the state and block the flow.

A cover member (42) is sealably fixed to the rear of the collection chamber (40). The cover member 42 is fitted to the open rear side of the collection chamber 40, and the filter member 44 is fixed to the inner surface thereof.

As described above, since the passage member 30 of the present invention is provided with the collecting chamber 40, it is possible to prevent the foreign substances contained in the injecting solution from being collected in the collecting chamber 40 and flowing into the cylinder 10. Therefore, it is possible to prevent the inside of the cylinder 10 from being contaminated with foreign matter.

The cover member 42 is formed with a second check valve 46 for preventing the injection liquid stored in the cylinder 10 from returning to the collection chamber 40. The second check valve 46 is the same as that of the first check valve 50 described above and is integrally formed with the cover member 42.

If the second check valve 46 is not provided, the injection liquid stored in the cylinder 10 is returned to the collection chamber 40 when the injection liquid is discharged from the cylinder 10, and the injection liquid is stored in the collection chamber 40 . That is, since the injection liquid stored in the collection chamber 40 can not be discharged to the outside, the injection liquid may be wasted by the injection liquid stored in the collection chamber 40.

However, in the present invention, the second check valve 46 is formed on the cover member 42 to prevent the injection liquid stored in the cylinder 10 from returning to the collection chamber 40, thereby preventing the injection liquid from being wasted.

The discharge passages (34) are formed on the outside of the collection chamber (40) in plural in the circumferential direction at regular intervals. The third check valve 48 is formed in the discharge passage 34 to close the discharge passage 34 when the injection liquid is introduced into the cylinder 10 and to discharge the discharge passage 34 when the injection liquid is discharged from the cylinder 10. [ Lt; / RTI >

The third check valve 48 has the same structure as that of the first check valve 50, but only in the opposite direction.

As another example of the safety filter, the auxiliary filter member 70 is disposed in the discharge passage 34, as shown in Fig. The auxiliary filter member 70 is formed in the shape of an annular ring having an opening at the center to filter foreign substances contained in the injection liquid when the injection liquid stored in the cylinder 10 is discharged to the discharge passage 34, do.

That is, the foreign substances contained in the injection liquid flowing into the cylinder 10 are first filtered by the filter member 44 and stored in the cylinder 10, and when the injection liquid stored in the cylinder 10 is discharged, In order to improve the filtering performance of the injection liquid.

4, the filter member 44 is formed in the form of a nanofiber web having a porous support 60 and a three-dimensional microporous structure laminated on the porous support 60 and provided by electrospinning a polymer material As shown in FIG.
In the embodiment of the present invention, the structure in which the filter member 44 is laminated with the porous support 60 and the nanofiber web-shaped membrane 62 has been shown and described, but the filter member is composed of only a nanofiber web- Or may be formed by laminating a plurality of such membranes.
Here, the membrane 62 may be laminated on one side of the porous support 60, laminated on both sides of the porous support 60, and the porous support 60 may be laminated on both sides of the membrane 62 have. The porous support 60 and the membrane 62 may be stacked in two or more layers when it is necessary to improve the filtering ability according to the purpose of use.

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The membrane 62 is prepared by preparing a spinning solution in which an electrospun polymer material and a solvent are mixed at a predetermined ratio, and spinning the spinning solution to produce nanofibers. When the nanofibers are accumulated in the porous support 60 to a predetermined thickness And is formed into a nanofiber web shape having fine pores capable of filtering foreign matters.

The diameter of the nanofiber is preferably in the range of 0.1 to 3.0 mu m.

The thickness of the membrane 62 can be freely adjusted according to the time period of emission from the electrospinning device, and the pore size and porosity are determined according to the thickness of the nanofiber web.

Therefore, in this embodiment, the pore size and porosity of the membrane 62 can be freely adjusted, and the pore size can be variously produced according to the kind of the filtration.

In the conventional filter, the porosity of the membrane is about 40 to 50% of the total membrane area. In this case, the flow resistance of the injecting liquid passing through the membrane is increased, and there is a problem that the injecting liquid is injected into the cylinder and the use thereof is inconvenient.

Particularly, due to the characteristics of a syringe, a female nurse who is weaker in strength than men usually uses a lot of syringes. When injecting an injection, it is difficult to use a syringe.

In the present invention, the membrane 62 can be formed into a nanofiber web by accumulating nanofibers by electrospinning, so that the porosity of the membrane 62 can be 70 to 80% of the total area of the membrane 62 The flow resistance of the injection liquid passing through the membrane 62 can be minimized.

The porous support 60 may be formed of a nonwoven fabric or a net made of metal or resin. Any porous support may be used as long as it has pores through which the injectable solution can pass and can support the membrane 62.

The polymeric material used in the present invention is capable of electrospinning, for example, a hydrophilic polymer and a hydrophobic polymer, and one or more of these polymers may be used in combination.

The polymer material usable in the present invention is not particularly limited as long as it is soluble in an organic solvent for electrospinning and is capable of forming nanofibers by electrospinning. For example, polyvinylidene fluoride (PVdF), poly (vinylidene fluoride-co-hexafluoropropylene), perfluoropolymers, polyvinyl chloride, polyvinylidene chloride or copolymers thereof, polyethylene glycol di Polyoxyethylene-polyoxypropylene oxide, polyethylene glycol derivatives including alkyl ethers and polyethylene glycol dialkyl esters, polyoxides including poly (oxymethylene-oligo-oxyethylene), polyethylene oxide and polypropylene oxide, polyvinyl acetate, poly (vinylpyrrolidone- Vinyl acetate), polystyrene and polystyrene acrylonitrile copolymers, polyacrylonitrile (PAN), polyacrylonitrile copolymers including polyacrylonitrile methyl methacrylate copolymers, polymethyl methacrylate, polymethyl methacrylate Acrylate copolymer or a mixture thereof.

Examples of usable polymer materials include polyamide, polyimide, polyamideimide, poly (meta-phenylene isophthalamide), polysulfone, polyetherketone, polyetherimide, polyethylene terephthalate, , Aromatic polyesters such as polyethylene naphthalate, polyphosphazenes such as polytetrafluoroethylene, polydiphenoxaphospazene, poly {bis [2- (2-methoxyethoxy) Polyurethane copolymers including polyether urethanes, cellulose acetate, cellulose acetate butyrate, and cellulose acetate propionate.

Of the above polymer materials, PAN, polyvinylidene fluoride (PVdF), polyester sulfone (PES) and polystyrene (PS) may be used alone or polyvinylidene fluoride PVdF) and polyacrylonitrile (PAN), PVDF, PES, PVdF and thermoplastic polyurethane (TPU) may be mixed and used.

The operation of the safety filter installed in the syringe thus constructed will be described below.

The upper part of the ampule glass bottle containing the injection solution is cut to open the ampule glass bottle, and the injection needle 22 is inserted through the opened space. And, in the case of the vial container sealed with a rubber hood, the injection needle 22 is inserted into the vial container through the rubber stopper.

As shown in FIG. 5, when the plunger 12 is pulled, a negative pressure is generated in the cylinder 10 to inject the injection liquid into the safety filter 20. Then, the first check valve 50 is opened by the pressure of the injection liquid, and the injection liquid flows into the collection chamber 40. The injected liquid which has flowed into the collecting chamber 40 is filtered while passing through the filter member 44 and foreign substances such as glass fragments and rubber fragments are collected in the collecting chamber 40.

The second check valve 46 is opened by the pressure of the injection liquid that has passed through the filter member 44 and is filtered into the cylinder 10 to store the clean injection liquid.

6, when the injection needle 22 is inserted into the patient and then the plunger 12 is pushed, the injection liquid is discharged to the discharge passage 34 and the third check valve 48 is opened by the pressure of the injection liquid And the injection is injected into the patient. At this time, it is possible to prevent the injection liquid stored in the cylinder 10 from being returned to the collection chamber 40 by the second check valve 46, thereby preventing the injection liquid from being wasted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

10: cylinder 12: plunger
20: Safety filter 22: Needle
24: first housing 26: second housing
30: passage member 32:
34: exhaust passage 40: collection chamber
42: cover member 44: filter member
46; Second check valve 48: Third check valve
50: first check valve 60: porous support
62: membrane

Claims (12)

A housing in which the injection needle is integrally formed and connected to the cylinder;
A passage member provided in the housing and having an inlet passage through which the injection liquid flows into the cylinder and a discharge passage through which the injection liquid introduced into the cylinder is discharged; And
And a filter member provided in an inflow passage of the passage member for filtering foreign substances contained in the injection liquid,
And a collecting chamber connected to the inflow passage to collect foreign substances contained in the injection liquid is formed at the center of the passage member,
A cover member to which the filter member is fixed is hermetically coupled to an open rear side of the collection chamber, and the cover member is provided with a second check valve for blocking return of the injection liquid introduced into the cylinder to the collection chamber A syringe safety filter. The connector according to claim 1,
A first housing in which an injection needle is integrally formed; And
And a second housing sealably coupled to the first housing and fitted to the cylinder. The method according to claim 1,
Wherein the filter member comprises a nanofiber membrane of a three dimensional network structure having micropores provided by electrospinning of a polymeric material. The filter according to claim 1,
A porous support; And
A nanofiber membrane of a three dimensional network structure having micropores deposited on the porous support and provided by electrospinning of a polymeric material. 5. The method of claim 4,
Wherein the diameter of the nanofibers is 0.1 to 3.0 占 퐉. 5. The method of claim 4,
Wherein the porosity of the membrane is 70-80% of the total area of the membrane. 5. The method of claim 4,
Wherein the porous support is formed of a nonwoven fabric or a mesh of metal or resin material. The method according to claim 1,
Wherein a first check valve that opens only a one-way flow in which an injection fluid flows into the cylinder is formed in front of the collection chamber, and a filter member is provided behind the first check valve. delete 9. The method of claim 8,
Wherein a plurality of discharge passages are formed at a predetermined interval in a circumferential direction on the outer side of the collecting chamber and a third check valve is formed to open only one directional flow through which the injected liquid is discharged from the cylinder. The method according to claim 1,
Wherein the discharge passage is equipped with an auxiliary filter member for filtering the foreign substances contained in the injection liquid discharged from the cylinder. A syringe including a cylinder in which an injection liquid is stored and a safety filter detachably mounted on the cylinder and integrally formed with the injection needle to remove foreign matter contained in the injection liquid,
Wherein said safety filter is a safety filter according to any one of claims 1 to 8, 10 or 11.
KR1020150088989A 2015-06-23 2015-06-23 Safety filter and syringe having the same KR101765785B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150088989A KR101765785B1 (en) 2015-06-23 2015-06-23 Safety filter and syringe having the same
PCT/KR2016/006531 WO2016208923A1 (en) 2015-06-23 2016-06-20 Safety filter and syringe having same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150088989A KR101765785B1 (en) 2015-06-23 2015-06-23 Safety filter and syringe having the same

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Publication Number Publication Date
KR20170000434A KR20170000434A (en) 2017-01-03
KR101765785B1 true KR101765785B1 (en) 2017-08-09

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Publication number Priority date Publication date Assignee Title
KR101993918B1 (en) * 2017-07-31 2019-06-27 주식회사 메이플테크 Syringe equipped with debris filter
KR102087150B1 (en) * 2017-09-29 2020-03-10 (주)메디라인액티브코리아 Triple-filtering syringe

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Publication number Priority date Publication date Assignee Title
KR101222881B1 (en) 2011-07-11 2013-01-17 김근배 Filter needle

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