KR101448856B1 - Filter assembly for syringe - Google Patents

Filter assembly for syringe Download PDF

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Publication number
KR101448856B1
KR101448856B1 KR1020140058292A KR20140058292A KR101448856B1 KR 101448856 B1 KR101448856 B1 KR 101448856B1 KR 1020140058292 A KR1020140058292 A KR 1020140058292A KR 20140058292 A KR20140058292 A KR 20140058292A KR 101448856 B1 KR101448856 B1 KR 101448856B1
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KR
South Korea
Prior art keywords
inflow
discharge
hole
syringe
valve
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KR1020140058292A
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Korean (ko)
Inventor
송태섭
강진기
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송태섭
강진기
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Priority to KR1020140058292A priority Critical patent/KR101448856B1/en
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Publication of KR101448856B1 publication Critical patent/KR101448856B1/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
    • 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 filter assembly for a syringe, and more particularly to a filter assembly for a syringe that does not require replacement of a needle when using a disposable syringe and is capable of preventing an excessive increase in pressure inside the syringe when the syringe is inhaled or injected .
The filter assembly for a syringe according to the present invention comprises an inflow section through which an infusion liquid is introduced and a discharge section through which the infusion liquid is discharged and an infusion section through which the infusion section is injected into the cylinder of the syringe, A body fitted with a filter for filtering foreign matter; An inflow hole communicating with the inflow portion and a discharge hole communicating with the discharge portion, the cover covering an upper portion of the body; And a valve disposed between the body and the cover for opening and closing the inflow hole and the discharge hole.

Description

≪ Desc / Clms Page number 1 > Filter assembly for syringe &

The present invention relates to a filter assembly for a syringe, and more particularly to a filter assembly for a syringe that does not require replacement of a needle at the time of use of a disposable syringe and can effectively filter foreign matter contained in the injectate.

In general, a syringe includes a cylindrical cylinder having a space formed therein so as to store an injection liquid therein, a piston that moves to suck or discharge the injection liquid from inside the cylinder, and a needle holder coupled to a neck portion formed in front of the cylinder. And a needle coupled to the needle holder.

In using such a syringe, an upper portion of an ampoule containing an injection liquid is broken, and a needle is inserted into the opened portion to suck the injection liquid into the cylinder, and then injected into the patient.

However, in the process of inhalation of the injection liquid, a part of the glass fragments generated when the ampoule is opened by opening the ampoule enters the inside of the ampoule, and the glass fragments introduced into the ampoule flows into the syringe together with the injection liquid, do.

To solve such a problem, Patent Document 10-1287239 discloses a filter assembly of a suction / discharge induction type by a piston stroke and a safety filter syringe using the filter assembly.

FIG. 1 is an exploded perspective view of a conventional filter assembly, FIG. 2 is a view illustrating the operation of a conventional filter assembly in an inhalation process, and FIG. 3 is a view illustrating an operation of a conventional filter assembly in an evacuation process.

1 to 3, a filter syringe using a conventional filter assembly includes a syringe 1 in which a predetermined amount of an injection solution is stored, an upper and lower filter syringe 1 for guiding the inhalation or discharge of the injection solution into the inner space of the syringe 1, A needle holder 100 for removing a foreign substance of an injection liquid sucked from a needle 4 by using a filter 20 on a path through which the injection liquid flows in and out, And a neck portion (2) formed in a shape that is engaged with the needle holder (100).

The needle holder 100 is provided with a plurality of discharge ports 31 having a hollow internal space formed of soft silicone material and having a curved protrusion 35 formed in the upper surface of the upper surface 32, And a plurality of support portions 34 extending downward from the lower surface of the body portion 33. The billow packing 30 is inserted into the inner space of the billowing packing 30, A bushing 40 is formed to penetrate the interior space through the interior space in order to block the discharge port of the body part and to provide a discharge path for the injection liquid and a filter 20 to filter the foreign substances mixed in the injection liquid while being supported by the bushing.

2, in the process of sucking the injection liquid, the billow packing 30 moves from the needle holder step portion 110 toward the neck portion due to the pressure change due to the upward movement of the piston, The injected liquid is sucked through the gap between the stepped portion and the upper surface 32. The injected liquid passes through the outer space rather than the inner space of the bilge packing, Can be sucked into the syringe through the gap between the support portions 34 that are bent while being supported by the support 2.

On the other hand, as shown in FIG. 3, when discharging the injection liquid in the process of discharging the injection liquid, the upper surface 32 mounted on the needle holder step unit 110 due to the pressure change due to the piston's lowering action So that the outlet (31) blocked by the bushing (40) is guided to be spaced apart from the bushing so that the filtered injected liquid can be discharged through the opened outlet.

However, since the conventional filter assembly is sucked into the interior of the syringe through the gap between the support portions 34 without passing through the filter 20 when the injection liquid is sucked into the syringe, foreign substances such as glass fragments flow into the syringe When the injection liquid is discharged through the filter 20 when the injection liquid is discharged to the outside of the syringe, the pressure inside the syringe increases when the injection liquid passes through the filter 20 having the narrow area.

In addition, the foreign matter introduced into the syringe is caught by the filter 20, closing the filter 20, and narrowing the area of the filter 20 through which the injection liquid can pass, thereby preventing the injection liquid from passing smoothly through the filter 20 So that the pressure inside the syringe rapidly increases.

If the pressure in the syringe suddenly increases due to the insufficiency of the flow of the injection liquid, the needle holder 100 is separated from the neck portion 2 and is fired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a method and a device that can easily manufacture and assemble, effectively filter foreign matters contained in an injection solution, And to provide a filter assembly for a syringe.

In order to attain the above object, according to the present invention, there is provided a syringe filter assembly comprising: an inflow section through which an injection fluid flows and an outlet section through which the injection fluid is discharged; A body equipped with a filter for filtering out foreign substances from the injection liquid discharged to the outside; An inflow hole communicating with the inflow portion and a discharge hole communicating with the discharge portion, the cover covering an upper portion of the body; And a valve disposed between the body and the cover for opening and closing the inflow hole and the discharge hole.

The body includes an upper frame in which the cover and the valve are inserted and an outer circumferential surface thereof is brought into close contact with the inner circumferential surface of the syringe, a lower frame positioned below the upper frame, And a discharge hole is formed at the upper end of the partition wall. The cover and the valve are formed with coupling holes into which the coupling protrusions are inserted, respectively.

The valve is divided into an inflow hole opening and closing part covering the inflow part and a discharge hole opening and closing part covering the discharge part. An inflow path is formed between the inflow hole opening and closing part and the upper frame so that the inflow hole and the inflow part communicate with each other, A protrusion for blocking the inflow hole is protruded at the time of discharging the injection liquid.

The inflow hole opening / closing portion is formed with a cutaway portion spaced from the inner circumferential surface of the upper frame. An inclined surface inclined downward toward the inflow portion is formed on the inner circumferential surface of the upper frame on which the inflow portion is formed, The inflow path is formed.

The valve is divided into an inflow hole opening and closing part covering the inflow part and a discharge hole opening and closing part covering the discharge part. The inner circumferential surface of the upper frame, on which the discharge part is formed, And when the injection liquid is discharged, the discharge hole opening / closing portion is deformed in an upward direction in which the discharge hole is formed, so that the discharge hole and the discharge portion communicate with each other.

The cover and the valve are arranged concentrically and the distance from the center of the cover to the outermost of the exhaust hole is longer than the distance from the center of the valve to the outermost of the valve.

And the squeezing net is formed on the sides and the bottom of the body.

The filter assembly for a syringe according to the present invention is easy to manufacture and assemble, can effectively remove foreign matter contained in an injection solution by double filtering, forms a flow path for smoothly passing the injection solution, It is possible to prevent the needles of the syringe from being abnormally separated.

1 is an exploded perspective view of a conventional filter assembly;
2 illustrates the operation of a conventional filter assembly in the course of inhalation;
Figure 3 illustrates the operation of a conventional filter assembly in the discharge process.
4 is a perspective view of a filter assembly for a syringe according to an embodiment of the present invention.
5 is an exploded perspective view of a filter assembly for a syringe according to an embodiment of the present invention.
6 is a cross-sectional view of a filter assembly for a syringe according to an embodiment of the present invention in the course of inhalation of an injection liquid;
7 is a cross-sectional view of a filter assembly for a syringe according to an embodiment of the present invention in the course of injecting liquid.
8 is a perspective view of a capping device for a needle for a syringe including a filter assembly according to an embodiment of the present invention.
9 is an exploded perspective view of a capping device for a needle for a syringe including a filter assembly according to an embodiment of the present invention.
10 is a cross-sectional view of a capping device for a needle for a syringe including a filter assembly according to an embodiment of the present invention.

The filter assembly 101 for a syringe according to an embodiment of the present invention comprises a body 110, a cover 120, and a valve 130, as shown in FIGS.

An inlet 110a and an outlet 110b are formed in the body 110. An injection fluid flows into the cylinder of the syringe through the inlet 110a and the injection fluid is discharged to the outside of the syringe through the outlet 110b. do.

The cover 120 and the valve 130 are coupled to the upper portion of the body 110 and either the inlet 110a or the outlet 110b is blocked by injecting the injected liquid into the cylinder or the syringe. do.

In this way, the injection liquid flows in and out through the inflow section 110a and the discharge section 110b, and foreign substances contained in the injection liquid are filtered.

This filter assembly 101 is formed in a substantially cylindrical shape and inserted into the interior of the syringe.

6 and 7 are cross-sectional views of the filter assembly 101 inserted into the syringe.

6 and 7, the inner wall of the syringe into which the filter assembly 101 is inserted and abutted can be the interior of the cylinder or the interior of the needle holder 200.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in detail with reference to the accompanying drawings.

4 and 5, the body 110 includes an upper frame 111, a lower frame 116, and a partition 117, and is formed inside the body 110 by a partition 117 The inflow portion 110a and the discharge portion 110b are partitioned.

5, the upper frame 111 is formed in a circular shape, and an outer circumferential surface thereof is in close contact with an inner circumferential surface of the syringe, and a coupling groove 112 into which the cover 120 and the valve 130 are inserted is formed.

An inclined surface 113 inclined downward toward the inlet 110a is formed on the inner circumferential surface of the upper frame 111 on which the inlet 110a is formed.

6, the inclined surface 113 is formed at a lower portion of the coupling groove 112 into which the valve 130 is inserted. The inclined surface 113 and the valve 130, that is, the inclined surface 113, An inflow path 114 is formed between the inflow hole 110a and the inflow hole 121 so as to communicate with each other.

A hooking jaw 115 is formed on the inner circumferential surface of the upper frame 111 on which the discharge portion 110b is formed.

The stopper 115 is formed at a lower portion of the coupling groove 112 into which the valve 130 is inserted and the valve 130 is disposed in close contact with the upper portion of the stopper 115, (110b) is blocked.

Specifically, the discharge opening / closing portion 130b is brought into close contact with the upper portion of the latching jaw 115 to block the discharge hole 122 and the discharge portion 110b.

The inclined surface 113 is formed on one side of the inner frame of the upper frame 111 where the inlet portion 110a is formed with the partition 117 as the center and the other side where the discharge portion 110b is formed 115 are formed.

The inclined surface 113, the inflow passage 114, and the engagement protrusion 115 together with the valve 130 are described in more detail.

The lower frame 116 is positioned at the lower portion of the upper frame 111 and is vertically connected to the upper frame 111 by the partition 117. A coupling protrusion 118 protrudes from the upper end of the partition 117, (130) and the cover (120) to the upper portion of the body (110).

The lower frame 116 is formed in a circular shape and has an outer diameter smaller than the outer diameter of the upper frame 111, and is spaced from the inner peripheral surface of the syringe.

Accordingly, as shown in FIG. 6 or 7, a passage through which the injection liquid can pass is formed between the lower frame 116 and the inner wall of the syringe.

A sieve 119 is mounted on the side and the bottom of the body 110 as described above to remove foreign matter from the injected liquid discharged to the outside of the syringe through the injected liquid which flows into the cylinder through the inflow portion 110a and the discharge portion 110b. .

That is, the screen 119 is mounted on the side of the body 110 forming the inflow section 110a and the discharge section 110b and on the lower frame 116, respectively, and the infusion fluid, which flows into the cylinder through the inflow section 110a, The injected liquid flowing through the sieve 119 attached to the side of the inlet 110a of the body 110 and the lower portion of the body 110 flows to the outside of the syringe through the outlet 110b, And flows through the screen 119 mounted on the side surface and the lower side of the screen 110b.

Since the area of the sieve 119 attached to the side of the body 110 is larger than the area of the sieve 119 attached to the lower portion of the body 110, the flow rate of the syringe passing through the sieve 119 can be increased .

Accordingly, a large amount of the injected liquid passes through the sieve 119 mounted on the side and the bottom of the body 110, and the foreign substances contained in the injected liquid are filtered, thereby preventing the pressure inside the cylinder from rising sharply as the injected liquid is discharged .

In addition, when the injection liquid flows into the cylinder through the inflow section 110a and is discharged to the outside of the syringe through the discharge section 110b, the injection liquid is filtered through the sieve 119 and can effectively remove foreign matter in a double manner. , It is possible to minimize the obstruction of the flow of the injection liquid by the foreign matter filtered by the filtration net 119 when the injection liquid is discharged through the discharge portion 110b.

As described above, the body 110 composed of the upper frame 111, the lower frame 116, and the partition 117 can be integrally formed using a metal mold and can be mass-produced.

The cover 120 covers an upper portion of the body 110 and includes an inflow hole 121 communicating with the inflow portion 110a and a discharge hole 122 communicating with the discharge portion 110b as shown in FIG. .

The inlet hole 121 is formed so that its diameter gradually increases toward the upper and lower portions.

The cover 120 is formed with a coupling hole 123 into which the coupling protrusion 118 is inserted.

The insertion hole 121 and the discharge hole 122 are formed in different directions with respect to the coupling hole 123 and the coupling protrusion 118 is inserted into the coupling hole 123, As shown in Fig.

The cover 120 is disposed on the upper portion of the valve 130 so as to be concentric with the valve 130 and the distance D1 from the center of the cover 120 to the outermost portion of the discharge hole 122 is larger than the distance Is longer than a distance (D2) from the center of the valve (130) to the outermost of the valve (130).

Accordingly, the portion of the valve 130 located at the lower portion of the discharge hole 122 can be bent in the direction of the discharge hole 122.

In this embodiment, the discharge hole 122 is formed in the cover 120, but one large discharge hole 122 may be formed.

The valve 130 is disposed between the body 110 and the cover 120 and opens and closes the inlet hole 121 and the outlet hole 122 as described above.

Specifically, the valve 130 is formed in a disk shape, is made of an elastically deformable material, and inserted into the coupling groove 112.

The valve 130 is formed with a coupling hole 133 through which the coupling protrusion 118 is inserted and is formed on the upper end of the partition wall 117 and the inner peripheral surface of the upper frame 111 on the discharge portion 110b side. (115).

The valve 130 may be divided into an inlet opening and closing unit 130a covering the inlet 110a and an outlet opening and closing unit 130b covering the outlet 110b.

5, the cutout 131 is formed to be spaced apart from the inner circumferential surface of the upper frame 111, and the cutout 131 is formed as shown in FIG. 6, And the inclined surface 113 formed on the inner circumferential surface of the upper frame 111 are formed.

The inflow part 110a and the inflow hole 121 are communicated with each other through the inflow path 114 so that the infusion part can be introduced into the inflow part 110a.

A protrusion 132 protruding from the inflow hole 121 is formed in the upper part of the inflow hole opening / closing part 130a.

Accordingly, the inlet 110a and the inlet 121 communicate with each other through the inlet 114 as described above, and the injection fluid is introduced into the inlet 110a by the operation of the piston.

7, when the injection liquid in the cylinder is discharged to the outside, the inflow hole switching portion 130a is brought into close contact with the lower surface of the cover 120 by the pressure of the injection liquid, and the protrusion 132 is inserted into the inflow hole 121 to prevent the injection liquid from being discharged through the inflow hole 121.

6, the discharging hole opening / closing part 130b includes a discharging part 110b and a discharging hole (not shown) in contact with the engaging step 115 formed on the inner peripheral surface of the discharging part 110b side of the upper frame 111 122).

Accordingly, when the injection liquid flows, the discharge opening / closing unit 130b is brought into close contact with the latching jaw 115 by the pressure of the injection liquid, and the injection liquid does not flow into the discharge unit 110b.

7, when the injection liquid in the cylinder is discharged to the outside, the injection liquid is discharged through the discharge hole 122 while pushing the discharge opening / closing portion 130b toward the discharge hole 122 and opening it.

The distance D1 from the center of the cover 120 to the outermost portion of the discharge hole 122 is longer than the distance D2 from the center of the valve 130 to the outermost portion of the valve 130, A part of the discharge opening and closing part 130b located at the lower part of the discharge hole 122 is bent in the direction of the discharge hole 122 so that the discharge part 110b and the discharge hole 122 are communicated with each other, ) Is discharged through the discharge hole (122).

The body 110, the cover 120, and the valve 130 described above can be respectively manufactured as a metal mold and assembled easily.

In addition, such a filter assembly 101 is convenient to be inserted into a syringe to engage.

Therefore, only a large number of filter assemblies 101 may be separately manufactured and then used as a syringe if necessary.

As described above, the filter assembly 101 for a syringe according to the present invention can be inserted into a syringe to filter foreign substances contained in an injection solution, and inserted into a needle holder as shown in Fig.

8A and 10A show the state in which the latch portion 430 is engaged with the first stopper 212 and the switch portion 400 is fixed and the injection needle 201 is exposed.

8 (b) and 10 (b), the end portion of the injection needle 201 is covered by the protection portion 400 in a state in which the switch portion 400 is moved upward.

Next, the capping device for a needle for a syringe including the filter assembly 101 of the present invention will be described in detail.

The needle capping apparatus according to an embodiment of the present invention includes a needle holder 200, a link 300, a switch unit 400, and an elastic body 500, as shown in FIG.

The needle holder 200 includes a needle 201 and is coupled to a neck portion (not shown) of the syringe, and the filter assembly 101 can be inserted and coupled to the needle holder 200.

More specifically, the needle holder 200 includes an assembly part 210 coupled to the neck part, and a needle coupling part 220 formed integrally with the assembly part 210 and having the injection needle 201 mounted thereon.

A guide portion 211 is protruded from the outer peripheral surface of the assembly portion 210.

The guide portion 211 is formed of two pieces, and a link 300 is interposed therebetween, and a first stopper 212 is formed at one end (lower end with reference to the drawing).

The first stopper 212 restricts and fixes the movement of the switch unit 400 which is to be moved upward in the direction in which the end of the injection needle 201 is positioned by the elastic force of the elastic body 500.

That is, the switch unit 400 can not move upward by the first stopper 212.

A guide groove 213 is formed on the inner surface of the guide portion 211.

The guide groove 213 has one end opened and a second stopper 214 for restricting the movement of the link 300 at the other end.

That is, the lower end of the guide groove 213 is opened and the second stopper 214 is formed at the upper end.

The needle coupling part 220 has a smaller outer diameter than the coupling part 210 and is inserted and arranged so that the elastic body 500 surrounds the needle coupling part 220 on the outer side.

A plurality of ribs 221 are formed on the outer peripheral surface of the needle coupling part 220 to prevent the elastic body 500 from flowing.

The link 300 moves along the guide portion 211 and protrudes from one end of the locking protrusion 310 inserted into the guide groove 213 on both sides.

The locking protrusion 310 contacts the second stopper 214 when the link 300 moves upward to restrict the movement of the link 300. [

The link 300 is formed with a slot 320 for guiding the movement of the switch unit 400.

The switch unit 400 includes a protection unit 410 for covering and protecting the end of the injection needle 201 and moves along the slot 320.

The switch unit 400 includes a cap unit 420, a locking unit 430, and a rod unit 440.

A protective portion 410 is formed on the cap portion 420 and a needle hole 421 through which the injection needle 201 is inserted is formed.

The cap part 420 covers the needle coupling part 220 and the elastic body 500 and moves along the injection needle 201 inserted into the needle groove 421. [

The protective portion 410 includes a first member 411 and a second member 412 which are protruded in opposite directions to each other with respect to the injection needle 201. The first member 411 and the second member 411 412 elastically support the injection needle 201.

8 (a), the first member 411 and the second member 412 are held in contact with the side surfaces of the injection needle 201 on both sides of the injection needle 201, When the switch unit 400 moves and the first member 411 and the second member 412 pass over the end of the injection needle 201 as shown in FIG. 8 (b), the end of the injection needle 201 Thereby preventing the user from being pinched or infected by the injection needle 201. [

10, a guide protrusion 431 to be inserted into the elongated hole 320 is protruded and connected to the cap portion 420 by the rod portion 440, and the first stopper 212 The movement is limited.

The elastic body 500 is composed of a coil spring and is disposed between the needle coupling portion 220 and the cap portion 420.

The elastic body 500 is held by the cap portion 420 in a compressed state because the latching portion 430 is caught by the first stopper 212.

At this time, when the user pushes the latching part 430 upward, the latching part 430 is separated from the first stopper 212, and the cap part 420 moves upward due to the elastic force of the elastic body 500.

When the guide protrusion 431 moves from the lower end to the upper end of the elongated hole 320, the link 300 is guided by the guide protrusion 431 to the switch unit 400, As shown in Fig.

The link 300 moves until the latching protrusion 310 disposed at the lower end of the guide groove 213 contacts the second stopper 214 and the latching protrusion 310 is moved to the second stopper 214 The second stopper 214 stops the operation.

At the same time, the movement of the switch unit 400 is restricted by the guide protrusion 431 inserted in the upper end of the slot 320 and stopped.

At this time, the protective part 410 composed of the first member 411 and the second member 412 covers the end of the injection needle 201.

When the user pushes the latching part 430 once and separates the latching part 430 from the first stopper 212, the switch part 400 and the link 300 are automatically moved by the elastic force of the compressed elastic body 500 The end portion of the injection needle 201 is covered by the protective portion 410, so that the waste syringe can be conveniently and safely handled with an easy and simple operation.

The filter assembly for a syringe of the present invention is not limited to the above-described embodiments and can be variously modified within the scope of the technical idea of the present invention.

101: Filter assembly,
The present invention relates to an apparatus and a method for assembling the same and a method of assembling the same and a method of assembling the same. Protrusion, 119: filter,
120: cover, 121: inflow hole, 122: exhaust hole, 123: engaging hole,
130: valve, 130a: inflow hole opening and closing part, 130b: discharge hole opening and closing part, 131: cutting part, 132: projection part, 133:
A needle stopper according to one aspect of the present invention includes a needle stopper and a needle stopper.
300: a link, 310: a latch, 320: a long hole,
The present invention relates to an image forming apparatus and a method of manufacturing the same, and more particularly, to an image forming apparatus, which includes a cover, a switch unit, a protective unit, a first member, a second member,
500: elastomer,

Claims (8)

Wherein the injection unit is connected to the inside of the syringe and the inflow part into which the injection solution flows and the discharge part from which the injection solution is discharged are formed and the injection solution is introduced into or discharged from the infusion part and the discharge part, A filter assembly for a syringe to which a filter for filtering foreign matter is mounted,
A body on which the inlet and the outlet are formed and on which the sieve is respectively mounted on the side and the bottom;
An inflow hole communicating with the inflow portion and a discharge hole communicating with the discharge portion, the cover covering an upper portion of the body; And
And a valve disposed between the body and the cover for opening and closing the inflow hole and the discharge hole,
The body
An upper frame into which the cover and the valve are inserted and whose outer peripheral surface is in close contact with the inner peripheral surface of the injector,
A lower frame positioned below the upper frame,
And a partition wall connecting the upper frame and the lower frame to partition the inflow section and the discharge section,
A coupling protrusion is protruded from an upper end of the partition wall,
Wherein the cover and the valve each have a coupling hole into which the coupling protrusion is inserted. delete delete An injection unit for injecting the injection liquid and a discharge unit for discharging the injection liquid are installed and a filter for filtering out foreign substances from the injection liquid discharged to the outside of the syringe through the injection liquid or the discharge unit flowing into the cylinder of the syringe is installed Body;
An inflow hole communicating with the inflow portion and a discharge hole communicating with the discharge portion, the cover covering an upper portion of the body; And
And a valve disposed between the body and the cover for opening and closing the inflow hole and the discharge hole,
The body
An upper frame into which the cover and the valve are inserted and whose outer peripheral surface is in close contact with the inner peripheral surface of the injector,
A lower frame positioned below the upper frame,
And a partition wall connecting the upper frame and the lower frame to partition the inflow section and the discharge section,
A coupling protrusion is protruded from an upper end of the partition wall,
Wherein the cover and the valve each have a coupling hole into which the coupling protrusion is inserted. The method of claim 4,
Wherein the valve is divided into an inflow hole opening and closing portion covering the inflow portion and a discharge hole opening and closing portion covering the discharge portion,
An inflow path is formed between the inflow hole opening and closing part and the upper frame so that the inflow hole and the inflow part are communicated with each other,
And a protrusion for blocking the inflow hole is protruded from the upper portion of the inflow hole opening / closing part when the injection liquid is discharged. The method of claim 5,
Wherein the inflow hole opening / closing portion is formed with a cutout portion that is spaced from the inner circumferential surface of the upper frame,
Wherein an inclined surface inclined downward toward the inflow portion is formed on an inner circumferential surface of the upper frame on which the inflow portion is formed,
Wherein the inflow channel is formed between the cut-out portion and the sloped surface. The method of claim 4,
Wherein the valve is divided into an inflow hole opening and closing portion covering the inflow portion and a discharge hole opening and closing portion covering the discharge portion,
Wherein an inner circumferential surface of the upper frame, on which the discharge unit is formed, is provided with a latching jaw which is in contact with the discharge opening and closing unit so as to block the discharge hole and the discharge unit,
Wherein when the injection liquid is discharged, the discharge hole opening / closing part is bent in an upward direction in which the discharge hole is formed, so that the discharge hole and the discharge part communicate with each other. The method of claim 7,
The cover and the valve are arranged concentrically,
Wherein a distance from a center of the cover to an outermost portion of the exhaust hole is longer than a distance from a center of the valve to an outermost portion of the valve.
KR1020140058292A 2014-05-15 2014-05-15 Filter assembly for syringe KR101448856B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101521884B1 (en) * 2015-01-09 2015-05-28 (주)엠에스디바이스 Filtering syringe
KR101591433B1 (en) * 2015-05-14 2016-02-03 강대원 Safety filtering syringe
KR101591436B1 (en) * 2015-05-14 2016-02-03 강대원 Safety filtering syringe
KR101647738B1 (en) * 2016-07-05 2016-08-18 씨엔엠테크 주식회사 Filter module for syringe
KR20160118092A (en) * 2015-04-01 2016-10-11 (주)한국티씨엠 A container for preserving cells for liquid-based cytology
KR101819116B1 (en) 2016-12-20 2018-01-16 씨엔엠테크 주식회사 Hub for syringe having dual filter module

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KR20120114742A (en) * 2011-04-08 2012-10-17 주식회사 쟈마트 A nidel with filter
KR101335979B1 (en) 2013-04-08 2013-12-03 천진호 Filter hub assembly for aspirating and injecting liquid medicine
KR101358936B1 (en) * 2013-07-23 2014-02-11 주식회사 아이엠티코리아 Connector type filter for a syringe, syringe with a filter and manufacturing method thereof

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KR20120114742A (en) * 2011-04-08 2012-10-17 주식회사 쟈마트 A nidel with filter
KR101335979B1 (en) 2013-04-08 2013-12-03 천진호 Filter hub assembly for aspirating and injecting liquid medicine
KR101358936B1 (en) * 2013-07-23 2014-02-11 주식회사 아이엠티코리아 Connector type filter for a syringe, syringe with a filter and manufacturing method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101521884B1 (en) * 2015-01-09 2015-05-28 (주)엠에스디바이스 Filtering syringe
WO2016111400A1 (en) * 2015-01-09 2016-07-14 (주)엠에스디바이스 Syringe having filter
KR20160118092A (en) * 2015-04-01 2016-10-11 (주)한국티씨엠 A container for preserving cells for liquid-based cytology
KR101693971B1 (en) 2015-04-01 2017-01-06 (주)한국티씨엠 A container for preserving cells for liquid-based cytology
KR101591433B1 (en) * 2015-05-14 2016-02-03 강대원 Safety filtering syringe
KR101591436B1 (en) * 2015-05-14 2016-02-03 강대원 Safety filtering syringe
KR101647738B1 (en) * 2016-07-05 2016-08-18 씨엔엠테크 주식회사 Filter module for syringe
KR101819116B1 (en) 2016-12-20 2018-01-16 씨엔엠테크 주식회사 Hub for syringe having dual filter module

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