KR20160143182A - Injector having stick injury preventing fuction - Google Patents

Injector having stick injury preventing fuction Download PDF

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Publication number
KR20160143182A
KR20160143182A KR1020150079413A KR20150079413A KR20160143182A KR 20160143182 A KR20160143182 A KR 20160143182A KR 1020150079413 A KR1020150079413 A KR 1020150079413A KR 20150079413 A KR20150079413 A KR 20150079413A KR 20160143182 A KR20160143182 A KR 20160143182A
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KR
South Korea
Prior art keywords
barrel
needle
needle unit
plunger
detachable
Prior art date
Application number
KR1020150079413A
Other languages
Korean (ko)
Inventor
최근욱
Original Assignee
최근욱
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.)
Filing date
Publication date
Application filed by 최근욱 filed Critical 최근욱
Priority to KR1020150079413A priority Critical patent/KR20160143182A/en
Priority to PCT/KR2015/006942 priority patent/WO2016006893A1/en
Publication of KR20160143182A publication Critical patent/KR20160143182A/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; 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
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/3145Filters incorporated in syringes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms

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

Abstract

The present invention relates to a syringe having a stick injury preventing function. More specifically, the syringe having a stick injury preventing function comprises: a barrel including a cylinder-shaped body, a barrel head unit disposed in the top end of the body, and protruding to a top side, a mounting groove formed on the top end inner surface of the body, and a flange formed in the bottom end thereof; a needle unit attaching and detaching member fitted to the mounting groove, having a fitting hole formed in the center thereof, a fitting projection formed in one side of the inner surface of the fitting groove, and having an inner space; a needle unit having a needle mounting unit having a syringe needle coupled therewith, and a fitting unit having a fitting groove fitted to the fitting projection; and a plunger inserted in the barrel, having an inner space, having an attaching and detaching cover for sealing a top end opening part during an entrance mode and detached to open the opening part during a safety mode, providing a suctioning force or a compressing force by being moved by a user, and feeding a medicinal liquid into the barrel or discharging a medicinal liquid stored in the barrel through the syringe needle.

Description

[0001] The present invention relates to a syringe having a stick-

The present invention relates to a syringe having a stick-restricting function.

2. Description of the Related Art Generally, a disposable syringe used in a clinic or the like has a cylindrical barrel in which an injection liquid discharging portion is formed, a plunger so that the plunger can be moved inward along the longitudinal direction of the barrel, So as to provide a compressive force or a suction force while moving. A needle body having a needle body coupled to the needle at the outer side is detachably coupled to the injection liquid discharge portion and a needle protection cover is detachably coupled to the needle body so as to protect the needle in a completely wrapped state.

However, such a conventional disposable syringe has a risk that foreign substances may flow into the body when the drug solution is inhaled in various ampoules including a glass ampule during its use. Accordingly, in order to prevent such a danger, a filter type syringe having a filter or a filter is proposed.

In the conventional filter type syringe, a separate suction dedicated needle is separately provided in the case of the filter attachment type syringe, and a filter having a filtering function is mounted in the hub of the filter type syringe needle.

However, since the filter type syringe according to the related art has a structure in which a filter latching portion and a filter latching portion are additionally installed and fastened to assemble and fix the filter mounted inside the hub, the suction- And it is inconvenient to reassemble the needles for injection into the body.

In addition, the filter type syringe according to the related art has a disadvantage that it is necessary to maintain the respective disposal caps for the filter needle for inhalation of medicines and the needles for the human body. In the replacement process of the needles, And there was a possibility of contact with the body part.

1A shows a cross-sectional view of a conventional filter type syringe 1. Fig. 1B shows an exploded cross-sectional view of a conventional filter type syringe 1. 1A and 1B, the outer cover 10, the inner filter housing 2 with the filter 3 mounted thereon, and the needle 20 are joined in order and attached to the filter housing 2 It is understood that the filter type injector 1 capable of separating the insoluble matter from the chemical liquid 4 through the filter is disclosed.

However, the filter-type injector 1 according to the prior art also has a problem that the conventional filter-type injector 1 has a risk of sticking to the needle of the user.

Therefore, there is a demand for a syringe capable of preventing sticking while improving the filtration function.

Korea Patent Publication No. 2013-0109309 Korea Patent No. 0632342 Korean Patent No. 1354451 Korean Patent Publication No. 2014-0001800

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a needle- The present invention provides a filter-type syringe having a stick preventive function capable of preventing a stick injury caused by a sticking of a stick.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are not intended to limit the invention to the precise form disclosed. It can be understood.

SUMMARY OF THE INVENTION An object of the present invention is to provide a syringe having a cylindrical body, a barrel head provided at an upper end of the body and protruding upward, a barrel having a mounting groove formed in an upper surface of the body and a flange at a lower end thereof; A needle unit attaching / detaching member which is inserted into the mounting groove and has a fitting hole formed at the center, a fitting protrusion formed at one side of the fitting hole, and an inner space; A needle unit having a needle attaching portion to which the needle is attached, and a fitting portion having a fitting groove to be fitted in the fitting protrusion; And a detachable cap which is inserted into the barrel and has an inner space and which is detachable to seal the upper opening in a pull-in mode and to open the opening in a safe mode and is moved by a user to provide a suction force or a compressive force, And a plunger for drawing the drug solution stored in the barrel into the barrel through the needle.

In addition, a locking protrusion formed on the inner surface of the upper end opening of the plunger, and a locking groove formed on the outer surface of the detachable locking cap and mounted by the locking protrusion.

The plunger may further include a plunger head coupled to an upper end of the plunger and compressing the needle unit detachment member after completion of the injection of the chemical liquid.

Further, after completion of the injection of the chemical liquid, the needle unit releasing member is pressed by the plunger head to release the nipping unit from the nipping unit detachable member, and at the same time, the detachable detachable plug is detached to the lower side of the upper opening . ≪ / RTI >

The needle unit and the detachable detachable cap may be detached, and the needle unit and the detachable detachable cap may be inserted into the inner space of the plunger in the safe mode.

According to an embodiment of the present invention, the filtration function is improved by enlarging the area of the filter membrane of the filter unit, and after the injection liquid is completed, the needle and the needle unit can be drawn into the plunger, sticking injury can be prevented.

It should be understood, however, that the effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, It should not be construed as limited.
1A is a cross-sectional view of a conventional syringe,
1B is an exploded cross-sectional view of a conventional syringe,
2 is an exploded perspective view of a syringe having a stick preventive function according to an embodiment of the present invention,
FIG. 3A is a perspective view of a barrel according to an embodiment of the present invention,
3B is a cross-sectional view of a barrel according to an embodiment of the present invention,
4A is a perspective view of a needle unit detachment member according to an embodiment of the present invention,
4B is a cross-sectional view of a needle unit detachment member according to an embodiment of the present invention,
5A is a perspective view of a needle unit according to an embodiment of the present invention,
5B is a cross-sectional view of a needle unit according to an embodiment of the present invention,
6 is a cross-sectional view of a barrel, a needle unit detachment member, and a needle unit according to an embodiment of the present invention,
7 is a perspective view of a plunger according to an embodiment of the present invention,
8 is a perspective view of a plunger head according to an embodiment of the present invention,
9 is a perspective view of a detachable closure cap according to an embodiment of the present invention,
FIG. 10 is a cross-sectional view of a plunger, a plunger head, and a detachable cap according to an embodiment of the present invention,
11 is a perspective view of a syringe having a stick preventive function according to an embodiment of the present invention,
12A is a sectional view of a syringe having a stick-preventing function according to an embodiment of the present invention in a state in which a chemical liquid is drawn,
FIG. 12B is a cross-sectional view of a syringe having a stick-in-place function according to an embodiment of the present invention in a state where injection of chemical liquid is completed;
12C is a cross-sectional view of a syringe having a stick-in-place function according to an embodiment of the present invention in a state in which a needle unit detachment member is pressed by a plunger head to detach a needle unit and a detachable detachable cap,
12D shows a cross-sectional view of a syringe having a stick-in function in accordance with an embodiment of the present invention in a safe mode.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

In this specification, when an element is referred to as being on another element, it may be directly formed on another element, or a third element may be interposed therebetween. Also in the figures, the thickness of the components is exaggerated for an effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional views and / or plan views that are ideal illustrations of the present invention. In the drawings, the thicknesses of the films and regions are exaggerated for an effective description of the technical content. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are produced according to the manufacturing process. For example, the etched area shown at right angles may be rounded or may have a shape with a certain curvature. Thus, the regions illustrated in the figures have attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific forms of regions of the elements and are not intended to limit the scope of the invention. Although the terms first, second, etc. have been used in various embodiments of the present disclosure to describe various components, these components should not be limited by these terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprises" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some instances, it should be noted that portions of the invention that are not commonly known in the description of the invention and are not significantly related to the invention do not describe confusing reasons to explain the present invention.

Hereinafter, the structure and function of the syringe 100 having a stick preventive function according to an embodiment of the present invention will be described. 2 is an exploded perspective view of a syringe 100 having a stick preventive function according to an embodiment of the present invention.

2, a syringe 100 having a stick preventive function according to an embodiment of the present invention includes a barrel 30, a needle unit removable member 60, a needle unit 20, The plunger head 40, the plunger head 41, the detachable cap 50, and the like.

Hereinafter, each configuration will be described in more detail. 3A is a perspective view of a barrel 30 according to an embodiment of the present invention. 3B is a cross-sectional view of the barrel 30 according to an embodiment of the present invention.

3A and 3B, a barrel 30 according to an embodiment of the present invention includes a cylinder-shaped body, a barrel head 31 protruding upward from the upper end of the body and having a draw-out hole, And a barrel flange 33 provided on the barrel flange 33.

Also, as shown in FIG. 3B, it can be seen that the mounting groove 32 is formed on the upper side inside the body according to the embodiment of the present invention. As described later, the needle unit releasing member 60 is inserted into the mounting groove 32 to be mounted thereon.

4A shows a perspective view of a needle unit releasing member 60 according to an embodiment of the present invention. 4B is a cross-sectional view of the needle unit releasing member 60 according to an embodiment of the present invention. 4A and 4B, the needle unit detachable member 60 according to the embodiment of the present invention is mounted on the mounting groove 32 at the upper inside of the body of the barrel 30 and fixed do.

4B, the needle unit removable member 60 according to the embodiment of the present invention has a fitting hole 61 penetrating upward and downward in the center, and the inner surface of the lower end fitting hole 61 The needle unit 20 is mounted on the needle unit detachable member 60 in the infeed mode and the needle unit 20 is mounted on the needle unit detachable member 60 in the safe mode, And is detached from the needle unit detachable member (60).

The inner space 63 in which the fitting portion 24 of the needle unit 20 is located is formed in the needle unit removable member 60 according to the embodiment of the present invention, The detachable lid 50 which has been inserted into the upper end opening 44 of the plunger 40 is detached and attached to the lower side by the needle unit 20 which is projected to the lower end. The detachable lid 50 is provided on the outer surface of the detachable lid 50 so that the detachable lid 50 can be detached from the upper opening 44 of the plunger 40 And the engaging step 45 is detached from the engaging groove 51 of the detachable stopper 50 by pressing the needle unit detachable member 60 as will be described later so that the detachable stopper 50 Is detached.

5A shows a perspective view of a needle unit 20 according to an embodiment of the present invention. 5B is a cross-sectional view of the needle unit 20 according to an embodiment of the present invention. 5A and 5B, the needle unit 20 according to an embodiment of the present invention includes a needle mounting portion 23 in the form of a hollow tube in which a mounting hole for mounting the needle 21 is formed, And a fitting portion 24 connected to the lower end of the mounting portion 23 and gradually increasing in diameter toward the lower end side and having a fitting groove 25 having an inner concave at one side edge of the outer surface.

The needle unit 20 is inserted into the fitting groove 25 of the needle unit detachment member 60 so that the needle unit 20 is inserted into the needle unit detachment member 60 Respectively. In the safety mode, as described later, the plunger head 41 presses the needle unit detachment member 60 so that the fitting protrusion 62 is detached from the fitting groove 25, and the needle unit 20 And can be separated.

6 shows a cross-sectional view of a barrel 30, a needle unit removable member 60 and a needle unit 20 according to an embodiment of the present invention. 6, the needle unit detachable member 60 is fitted and fixed in the mounting groove 32 at the upper inner side of the body of the barrel 30, and the needle unit 20 is inserted into the fitting groove 25, And is fitted to the needle unit attaching / detaching member 60 while being inserted into the needle unit removing / attaching member 62.

7 shows a perspective view of a plunger 40 according to an embodiment of the present invention. 8 is a perspective view of the plunger head 41 according to an embodiment of the present invention. 9 is a perspective view of the detachable cap 50 according to an embodiment of the present invention. 10 is a cross-sectional view of the plunger 40, the plunger head 41, and the detachable cap 50, according to an embodiment of the present invention.

As shown in FIG. 7, the plunger 40 according to an embodiment of the present invention has an inner space 43 and an upper opening 44 formed on the upper side. A plunger flange 42 is provided at the lower end.

The plunger head 41 shown in Fig. 8 is coupled to the upper end of the plunger 40, as shown in Fig. 10, and the detachable cap 50 shown in Fig. 9, Is inserted into the upper opening 44 of the plunger 40 to be mounted thereon. The plunger 40 and the detachable cap 50 are made of plastic.

As described above, when the upper end surface of the plunger head 41 is brought into contact with the lower end surface of the needle unit releasing member 60 by the movement of the plunger 40 and then the plunger 40 is moved upward, The needle unit 20 is detached from the needle unit detachment member 60 while the head unit 41 presses the needle unit detachment member 60 and the needle unit detachment member 60 is squeezed, Is detached from the upper opening 44 while being moved from the upper opening 44 to the lower end.

Hereinafter, an operation method and a use method of the syringe 100 having a stick preventive function according to an embodiment of the present invention will be described. 11 is a perspective view of a syringe 100 having a stick preventive function according to an embodiment of the present invention. 12A is a cross-sectional view of a syringe 100 having a stick preventive function according to an embodiment of the present invention in a state in which a chemical liquid is drawn. 12B is a cross-sectional view of the syringe 100 having the stick-in-place function according to an embodiment of the present invention in a state where the chemical liquid injection is completed. 12C is a cross-sectional view showing a state in which the needle unit detachable member 60 is pressed by the plunger head 41 to detach the needle unit 20 and the detachable cap 50, Sectional view of the syringe 100 having the syringe. 12D shows a cross-sectional view of a syringe 100 having a stick-in function in accordance with an embodiment of the present invention in a safe mode.

12A, a needle unit detachable member 60 is mounted inside the upper end of the body of the barrel 30 in the injection mode, and the needle unit 20 is attached to the fitting protrusion 62 of the needle unit detachable member 60. [ The needle unit 20 is attached to the needle unit detachable member 60 while the plunger 40 with the plunger head 41 and the detachable cap 50 is engaged with the barrel 30).

12B, by pushing the plunger 40, the chemical solution stored in the barrel 30 is injected through the needle 21, and the plunger 40 is moved upward by the upper surface of the plunger head 41 And it is moved until it is brought into contact with the lower end surface of the needle unit releasing member 60.

12C, when the plunger 40 is further urged in the direction of injection of the chemical liquid, the needle unit detachment member 60 is urged by the plunger head 41, As shown in Fig.

The needle unit detachable member 60 is pressed so that the fitting groove 25 of the needle unit 20 is detached from the fitting protrusion 62 of the needle unit detachable member 60, The needle unit 20 is detached from the needle unit detachable member 60 and the needle unit detachable member 60 is simultaneously pressed so that the needle unit 20 protrudes from the lower end of the needle unit detachable member 60 The detachable lid 50 mounted on the upper opening 44 of the plunger 40 is moved to the lower end to be detached from the plunger 40.

12D, the needle unit detachable member 60 is pressed by the plunger head 41 so that both the needle unit 20 and the detachable cap 50 are detached and thereby the needle unit 20 and the detachable lid 50 are inserted into the inner space 43 of the plunger 40. As shown in FIG.

As a result, in the safety mode, the needle 21, the needle unit 20, and the detachable cap 50 are drawn into the internal space 43 of the plunger 40, thereby preventing sticking.

It should be noted that the above-described apparatus and method are not limited to the configurations and methods of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments are selectively combined .

1: Conventional syringe
2: Filter housing
3: Filter
4: Solution
10: cover
20: Needle unit
21: Needle
22: Needle body
23: Needle mounting part
24:
25: Fitting groove
30: Barrel
31: Barrel head
32: mounting groove
33: Barrel flange
40: plunger
41: Plunger head
42: Plunger flange
43: Plunger inner space
44: upper opening
45: hanging jaw
50: detachable plug
51: Retaining groove
60: Needle unit detachment member
61: insertion hole
62: insertion projection
63: inner space of the attachment / detachment member
100: a syringe having a stick preventive function

Claims (5)

In the syringe,
A barrel having a cylindrical body, a barrel head provided at an upper end of the body and protruding upward, a mounting groove formed in an upper surface of the body, and a barrel having a flange at a lower end thereof;
A needle unit attaching / detaching member which is inserted into the mounting groove and has a fitting hole formed at the center, a fitting protrusion formed at one side of the fitting hole, and an inner space;
A needle unit having a needle attaching portion to which the needle is attached, and a fitting portion having a fitting groove to be fitted in the fitting protrusion;
And a detachable cap which is inserted into the barrel and has an inner space and which is detachable to seal the upper opening in a pull-in mode and to open the opening in a safe mode and is moved by a user to provide a suction force or a compressive force, And a plunger for drawing the drug solution stored in the barrel into the barrel or discharging the drug solution stored in the barrel through the needle.
The method according to claim 1,
And a latching groove formed on an inner surface of the upper opening of the plunger and a latching groove formed on an outer surface of the latching and detaching jig.
3. The method of claim 2,
Further comprising a plunger head coupled to an upper end of the plunger and compressing the needle unit releasing member after completion of the injection of the chemical liquid.
The method of claim 3,
After the completion of the injection of the chemical liquid,
The needle unit releasing member is squeezed by the plunger head,
The nudle unit is detached from the nud-unit detachable member,
And the detachable cap is detachably attached to the lower side of the upper opening portion.
5. The method of claim 4,
Wherein the needle unit and the detachable detachable cap are detachably inserted into the inner space of the plunger in the safe mode so that the needle unit and the detachable detachable cap are inserted into the inner space of the plunger.
KR1020150079413A 2014-07-08 2015-06-04 Injector having stick injury preventing fuction KR20160143182A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150079413A KR20160143182A (en) 2015-06-04 2015-06-04 Injector having stick injury preventing fuction
PCT/KR2015/006942 WO2016006893A1 (en) 2014-07-08 2015-07-06 Syringe having stick injury prevention function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150079413A KR20160143182A (en) 2015-06-04 2015-06-04 Injector having stick injury preventing fuction

Publications (1)

Publication Number Publication Date
KR20160143182A true KR20160143182A (en) 2016-12-14

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100632342B1 (en) 2004-01-12 2006-10-11 김석곤 Filtering apparatus for testing specimen of liquid base cytology
KR20130109309A (en) 2012-03-27 2013-10-08 장진영 Filter needle for disposable syringe with separable filter-head
KR20140001800A (en) 2013-11-13 2014-01-07 장진영 Filter assembly for syringe
KR101354451B1 (en) 2012-12-03 2014-01-28 김근배 A filter syringe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100632342B1 (en) 2004-01-12 2006-10-11 김석곤 Filtering apparatus for testing specimen of liquid base cytology
KR20130109309A (en) 2012-03-27 2013-10-08 장진영 Filter needle for disposable syringe with separable filter-head
KR101354451B1 (en) 2012-12-03 2014-01-28 김근배 A filter syringe
KR20140001800A (en) 2013-11-13 2014-01-07 장진영 Filter assembly for syringe

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