KR20130139812A - Filter assembly for syringe - Google Patents

Abstract

The present invention relates to a filter assembly for a syringe which is combined to a needle unit of the syringe. By including the filter assembly for the syringe on the needle unit, foreign materials including glass pieces and rubber pieces are filtered from the medicinal fluid when a user discharges the medicinal fluid from the syringe. The medicinal fluid passes through a filter when the medicinal fluid is inserted into the syringe to directly inject the medicinal fluid to a patient who can be directly injected, and injecting the medicinal fluid through a valve on an IV hose after removing a syringe needle to a patient with an IV.

Description

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

The present invention relates to filters, and more particularly to filter assemblies for syringes.

Generally, the drug solution to be administered to a patient with a syringe is distributed in an ampoule made of glass or a vial having a rubber stopper applied to a glass bottle, and the drug solution contained in the ampoule or the vial is administered to the patient using a syringe. There is a problem that the glass fragments generated while opening the ampoule or the rubber pieces generated from the rubber stopper of the vial come into the syringe.

That is, when the drug solution is administered through a syringe, there is a problem that glass fragments or rubber fragments are administered to the patient to cause complications. Particularly, intravenous administration causes phlebitis, and in case of injecting spinal cord, there is a problem of inducing necrosis of body tissue such as penetration into the brain, and in severe cases, it may develop into cancer.

Accordingly, in recent years, the use of a filter for a syringe has been recommended, and techniques for various syringe filters have been provided.

Korean Patent No. 10-1287239 discloses that when injecting the injected solution while inducing the injection of the injected solution only in the section excluding the filtering region, the injected solution is exclusively discharged only in the filtering region, thereby injecting the drug solution into the patient having the ringer The injector injects the chemical liquid through the valve provided in the ringer hose. However, when the injector injects the chemical liquid through the valve, the needle portion of the injector is removed and the chemical liquid is injected.

Korean Patent Registration No. 10-1171150 discloses that when the injection liquid is sucked, the filter is not passed to allow smooth suction of the injection liquid. On the other hand, when the injection liquid sucked into the syringe is administered to the human body, In the case of a filter member for a syringe, it is necessary to confirm whether or not the patient has a ringer, whether it is possible to perform a blood vessel injection or an intramuscular injection, If there is a mistake, carefully take out the medicine again and proceed again. It is troublesome because there can always be a mistake.

Korean Patent No. 10-1287239 (July 11, 2013), "Blow packing assembly of suction and discharge induction type by piston stroke and safety filter syringe using the same" Korean Patent No. 10-1171150 (Jul. 31, 2012), " Filter member for a syringe "

The present invention is applicable to a conventional syringe, and when a chemical solution is sucked into a syringe, it is passed through a filter so that a desired function can be performed without any further action like a conventional syringe in all kinds of situations depending on a medical department, The present invention provides a filter assembly for a syringe which can be used and applied without any hassle, and which does not introduce foreign substances into the patient when the liquid medicine is injected, without any additional operation or inconvenience in the case of the Ringer patient, the intravenous injection patient or the like.

In order to achieve the above object, the filter assembly for a syringe according to an embodiment of the present invention is a filter assembly for a syringe coupled to the needle portion of the syringe, the discharge hole is formed in the center head in the shape of a solid, It is provided with a discharge column extending downward, the blocking portion is moved down by the pressure in which the chemical liquid is sucked up and moved up by the pressure in which the chemical liquid is discharged; A connecting portion inserted into the discharge column in a cylindrical shape having a groove formed in an upper direction; It is provided at the inner center of the connecting portion in a columnar shape, and a lower end thereof is coupled to the lower surface of the connecting portion, and when the blocking portion moves downward, the discharge hole is blocked, and when the blocking portion moves upward, the upper end is opened to open the discharge hole. Blocking column corresponding to the shape of the discharge hole; A hole formed in a center of a disc shape and fitted into the lower outer side of the connection part to filter foreign substances of the chemical liquid sucked along the edge of the blocking part; A filter plate having a plurality of suction holes formed at a center thereof in a disk shape disposed on a lower surface of the filter to be coupled to the lower end of the connection part and to facilitate suction of the chemical liquid passing through the filter; And a case having a blocking jaw bent inward along an upper edge in a cylindrical shape and surrounding the outer circumferential surfaces of the filter and the filter plate, the case being coupled from the lower side of the needle part.

In addition, as a filter assembly for a syringe coupled to the needle portion of the syringe, a discharge hole is formed in the central head in the shape of a solid, and provided with a discharge column extending downward from the discharge hole, the pressure to the drug liquid is sucked in A blocking part moving down by and moving up by the pressure at which the chemical is discharged; A connection portion which is extrapolated to the discharge column in a cylindrical shape in which a groove is formed in an upward direction; It is provided at the inner center of the connecting portion in a columnar shape, and a lower end thereof is coupled to the lower surface of the connecting portion, and when the blocking portion moves downward, the discharge hole is blocked, and when the blocking portion moves upward, the upper end is opened to open the discharge hole. Blocking column corresponding to the shape of the discharge hole; A hole formed in a center of a disc shape and fitted into the lower outer side of the connection part to filter foreign substances of the chemical liquid sucked along the edge of the blocking part; A filter plate having a plurality of suction holes formed at a center thereof in a disk shape disposed on a lower surface of the filter to be coupled to the lower end of the connection part and to facilitate suction of the chemical liquid passing through the filter; And a case having a blocking jaw bent inward along an upper edge in a cylindrical shape and surrounding the outer circumferential surfaces of the filter and the filter plate, the case being coupled from the lower side of the needle part.

Here, the connection portion, a plurality of discharge holes may be formed to discharge the chemical liquid on the lower surface.

Further, the discharge column may include a first locking member bent along the lower edge, and the connection part may include a second locking member bent along the upper edge to be constrained with the first locking member.

Meanwhile, the case may be a coupling case in which the upper side is inserted into the lower side of the needle part, and the lower side is extruded into the neck of the cylinder.

The case may be a hub case having a hub neck portion on the upper side and being fitted to the lower side of the needle portion, and a lower side of the hub portion being fitted to the neck portion of the cylinder.

The hub neck portion may further include a hub neck coupling portion having a thread-shaped first coupling groove formed on an inner circumferential surface thereof so that the lower edge of the needle portion may be inserted and fixed.

Furthermore, the neck portion of the cylinder may further include a neck coupling portion having a threaded second coupling groove formed on an inner circumferential surface thereof so that the lower edge of the hub case may be inserted and fixed.

The needle needle may further include a needle portion having a needle hole formed in a side surface of the needle needle to prevent foreign matter from being caught on the needle needle.

According to the filter assembly for a syringe according to an embodiment of the present invention,

First, a filter assembly for a syringe is provided in the needle part to filter foreign substances such as glass fragments and rubber pieces, so that foreign substance-free drug solution can be discharged from the syringe at the time of injection.

Second, it can be applied to a patient who inserts a ringer by passing the filter when the chemical solution is sucked into the syringe.

Third, the filter assembly for a syringe can be used in a standard syringe that is generally produced, which is advantageous for application.

Fourth, with a case, it is easy to insert the needle portion of the syringe.

Fifth, the case is provided with a coupling case in which the upper side is interpolated to the lower side of the needle portion and the lower side is extrapolated to the neck portion of the cylinder, so that the case can be easily coupled and separated from the needle portion and can be easily coupled to the cylinder.

Sixth, the case is provided as a hub case having a hub neck portion on the upper side can be easily coupled and separated on the needle portion.

Seventh, it is easy to combine the hub case and the cylinder by providing a neck coupling portion in the cylinder neck portion.

Eighth, a needle portion having a needle hole formed on the side surface of the needle needle may be further provided to prevent foreign matter from being caught on the needle needle.

Ninth, disposable insulin needles can be applied.

1 is a perspective view of a syringe having a filter assembly for a syringe according to an embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view of a syringe with a filter assembly for a syringe shown in FIG. 1. FIG.
3 is a perspective view showing the filter assembly for the syringe shown in FIG.
4 is an exploded cross-sectional view showing the inside of the case shown in FIG.
FIG. 5 is a cross-sectional view showing that the chemical solution is filtered by the filter assembly for a syringe shown in FIG. 1 and sucked into the syringe.
FIG. 6 is a cross-sectional view showing that the chemical solution filtered by the filter assembly for a syringe shown in FIG. 1 is discharged from the syringe.
7 is a perspective view showing that the case of the filter assembly for a syringe shown in FIG. 1 is a coupling case.
8 is an enlarged cross-sectional view of a syringe with a filter assembly for a syringe shown in Fig.
FIG. 9 is a perspective view showing that the case of the filter assembly for a syringe shown in FIG. 1 is a hub case.
10 is an enlarged cross-sectional view of a syringe with a filter assembly for a syringe shown in Fig.
11 is a perspective view showing another embodiment of the hub case shown in FIG.
12 is a cross-sectional view showing that the hub case shown in FIG. 11 is assembled.
13 is a perspective view showing another embodiment of the hub case shown in FIG.
14 is a cross-sectional view showing that the hub case shown in FIG. 13 is assembled.
FIG. 15 is an enlarged perspective view of the needle part illustrated in FIG. 1.
16 is a perspective view showing a syringe equipped with a filter assembly for a syringe according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated.

1 is a perspective view showing a syringe having a syringe filter assembly according to an embodiment of the present invention, Figure 2 is an enlarged cross-sectional view showing a syringe having a syringe filter assembly shown in Figure 1, Figure 3 is 4 is a cross-sectional perspective view showing an exploded view of the inside of the case shown in FIG. 3, and FIG. 5 shows that the chemical liquid is filtered and sucked into the syringe by the filter assembly for the syringe shown in FIG. 6 is a cross-sectional view showing that the chemical liquid filtered by the filter assembly for the syringe shown in FIG. 1 is discharged from the syringe.

1 and 2, the syringe filter assembly 100 according to the embodiment of the present invention is a syringe filter assembly 100 coupled to the needle portion 210 of the syringe 200, FIGS. 3 and FIG. As shown in FIG. 4, the blocking unit 110 includes a blocking unit 110, a connecting unit 120, a blocking pillar 122, a filter 130, a filter plate 140, and a case 150.

Here, the syringe filter assembly 100 is also applicable to disposable insulin needles.

First, the blocking unit 110 has a discharge hole 111 is formed in the center head in the shape of a solid as shown in Figures 3 and 4, the discharge column 112 extending downward from the discharge hole 111 Is provided. The blocking unit 110 is provided to move down by the pressure at which the chemical liquid is sucked in as shown in FIG. 5, and conversely, to move up by the pressure at which the chemical liquid is discharged as shown in FIG. 6.

The connecting portion 120 is inserted into the discharge column 112 in a cylindrical shape with a groove formed in the upper direction as shown in FIGS. 3 and 4.

Here, the connection portion 120 may be formed with a plurality of discharge holes 121a on the lower surface of the connection portion 121 so that the chemical liquid can be discharged.

Further, the discharge pillar 112 has a first locking member (H1) bent along the lower edge, the connection portion 120 is a second locking bent along the upper edge to be constrained with the first locking member (H1). The member H2 can be provided.

As shown in FIG. 4, the first stiffening member H1 is bent inward along the lower edge of the discharge pillar 112, and the second locking member H2 is swept along the upper edge of the connecting portion 120. It can be bent to be provided.

Accordingly, when the blocking part 110 moves up and down by the pressure of the chemical liquid, it may be restrained without being separated from the connecting part 120.

The blocking pillar 122 is provided in the inner center of the connecting portion 120 in a columnar shape, and a lower end thereof is coupled to the lower surface 121 of the connecting portion 120, and when the blocking portion 110 moves downward, the outlet hole 111 is moved. When the blocking unit 110 moves upward, the upper end corresponds to the shape of the discharge hole 111 so that the discharge hole 111 can be opened.

As shown in FIGS. 3 and 4, the filter 130 has a hole formed at the center thereof to be inserted into the lower outer side of the connection part 120 to remove foreign substances in the chemical liquid sucked along the edge of the blocking part 110. Filter it out.

3 and 4, the filter plate 140 is a disk shape disposed on the bottom surface of the filter 130, and a hole is formed in the center thereof, so that the filter plate 140 is coupled to the lower end of the connection part 120 and passes through the filter 130. A plurality of suction holes 141 are formed to facilitate the suction of.

Case 150 is provided with a blocking jaw 151 bent inward along the upper edge in a cylindrical shape as shown in Figure 3 and to surround the outer peripheral surface of the filter 130 and filter plate 140, Figure 1 As shown in the coupled from the lower side of the needle portion (210).

Next, a configuration in which foreign substances are filtered by the filter assembly 100 will be described in detail with reference to FIGS. 5 and 6.

As shown in FIG. 5, when the chemical liquid is sucked into the syringe 200, the blocking unit 110 moves downward by the pressure at which the chemical liquid is sucked. Accordingly, the edge of the blocking unit 110 is spaced apart from the blocking jaw 151 of the case 150 to form a space, and the chemical liquid is sucked along the edge of the blocking unit 110 to form the cylinder 220 of the syringe 200. Will come in).

Here, as the blocking unit 110 moves downward, the discharge hole 111 formed in the central head portion of the blocking unit 110 is blocked by the blocking column 122 of the connecting unit 120, and is discharged to the discharge hole 111. Chemical liquid does not flow.

 The chemical liquid sucked along the edge of the blocking unit 110 is sucked into the cylinder 220 of the syringe 200 via the filter 130. At this time, foreign substances such as glass fragments and rubber pieces introduced together with the chemical liquid are filtered ( 130).

On the contrary, when discharging the chemical liquid from the syringe 200 as shown in FIG. 6, the blocking unit 110 moves upward by the pressure at which the chemical liquid is discharged. Accordingly, the edge of the blocking unit 110 is in close contact with the blocking jaw 151 of the case 150 to block the discharge of the chemical along the edge of the blocking unit 110 and the connection portion 120, the discharge pillar 112 And the chemical liquid is discharged through the discharge hole 111.

Here, as the blocking unit 110 moves upward, the discharge hole 111 formed in the central head of the blocking unit 110 is released from the blocking column 122 of the connection unit 120, so that the chemical liquid is discharged into the discharge hole 111. May be discharged.

That is, as described above, the clean chemical liquid filtered by the filter 130 may be discharged through the discharge hole 111.

By passing through the filter 130 when the drug is sucked into the syringe 200, since only the clean drug is sucked into the cylinder 220 of the syringe 200, it may be particularly advantageous to apply to a patient with a ringer. .

More specifically, when the chemical solution is injected into the patient through the ringer, since the chemical solution is injected by directly inserting the neck portion 221 of the cylinder 220 of the injector 200 into the side valve provided in the hanger of the ringer, It is possible to easily inject a clean chemical liquid filtered by foreign substances into the patient.

7 is a perspective view showing that the case of the filter assembly for the syringe shown in Figure 1 is a coupling case, Figure 8 is an enlarged cross-sectional view showing a syringe with a filter assembly for the syringe shown in Figure 7, Figure 9 is in Figure 1 A perspective view showing that the case of the filter assembly for syringe shown is a hub case, Figure 10 is an enlarged cross-sectional view showing a syringe with a syringe filter assembly shown in Figure 9, Figure 11 is another of the hub case shown in FIG. 12 is a cross-sectional view showing that the hub case shown in Figure 11 is assembled, Figure 13 is a perspective view showing another embodiment of the hub case shown in Figure 9, Figure 14 is shown in Figure 13 Sectional view showing that the hub case is assembled, Figure 15 is an enlarged perspective view of the needle portion shown in FIG.

Referring to FIGS. 7 and 8, the case 150 may be a coupling case 160 whose upper side is interpolated to the lower side of the needle portion 210 and the lower side is extrapolated to the neck portion 221 of the cylinder 220. . As the case 150 is provided as the coupling case 160, the filter assembly 100 for the syringe can be easily coupled to and separated from the needle unit 210, and can be easily coupled to the cylinder 220.

9 and 10, the case 150 is provided with a hub neck portion 171 on the upper side and fitted to the lower side of the needle portion 210, and the lower side is fitted to the neck portion 221 of the cylinder 220. Losing hub case 170 may be. As the case 150 is provided as the hub case 170 having the hub neck portion 171, the filter assembly 100 for the syringe can be easily coupled to and separated from the needle portion 210.

11 and 12, the hub neck portion 171 has a hub neck in which a first coupling groove G1 having a thread shape is formed on an inner circumferential surface thereof so that the lower edge 210a of the needle portion 210 may be inserted and fixed. The coupling part 172 may be further provided. Thus, as the hub neck portion 171 is provided with a hub case 170 having a hub neck coupling portion 172, the lower edge (210a) of the needle portion 210 is bent to the outside the hub neck coupling portion Can be inserted into and fixed to the (172) can easily combine and separate the filter assembly 100 for the syringe with the needle portion (210).

Referring to FIGS. 13 and 14, the neck portion 221 of the cylinder 220 has a threaded second coupling groove G2 formed on an inner circumferential surface thereof so that the lower edge 173 of the hub case 170 may be inserted and fixed. The formed neck coupling portion 222 may be further provided. Thus, as the neck coupling portion 222 is provided at the neck portion 221 of the cylinder 220, the hub case 170 and the neck portion 221 of the cylinder 220 can be easily coupled.

Meanwhile, referring to FIG. 15, a needle part 210 having a needle hole formed on the side of the needle needle 211 may be further provided to prevent foreign substances from being caught in the needle needle 211.

Specifically, the needle needle 211 may be inserted into the side valve provided at the inlet of the ringer or the ringer hose in order to administer the drug solution to the patient with the ringer inserted therein, and the drug solution may be administered. When the hole is formed, the needle needle 211 is inserted into the ringer inlet or side valve, and the foreign substance is caught in the needle hole, and the foreign substance caught in the needle needle 211 is injected together with the chemical solution in the syringe 200. Can be.

However, as shown in FIG. 15, when the needle part 210 is formed at the side of the needle needle 211, the needle needle 211 may be inserted into the needle needle 211 even when the needle needle 211 is inserted into the ringer inlet or the side valve. The foreign matter is pushed without being caught, and even if the drug solution in the syringe 200 is administered, the foreign material may be prevented from being administered together with the drug solution.

16 is a perspective view showing a syringe equipped with a filter assembly for a syringe according to another embodiment of the present invention.

1 illustrates a case in which the connection part 120 is interpolated into the discharge pillar 112, and FIG. 16 illustrates a case in which the connection part 120 is extrapolated to the discharge pillar 112. At this time, since the radius of the connection portion 120 is larger than the radius of the discharge column 112, when discharging the chemical liquid, it is easier to discharge the chemical liquid by reducing the difference between the pressure of the chemical liquid discharged along the connection portion 120 and the discharge column (112) It can be done.

Further, the discharge pillar 112 has a first locking member (H1) bent along the lower edge, the connection portion 120 is a second locking bent along the upper edge to be constrained with the first locking member (H1). A member H2 is provided, in contrast to that shown in FIG. 1, as shown in FIG. 16, the first stiffening member H1 is bent outwardly along the lower edge of the discharge pillar 112, and includes a second latch. The member H2 may be bent inward along the upper edge of the connection part 120. Accordingly, when the blocking part 110 moves up and down by the pressure of the chemical liquid, it may be restrained without being separated from the connecting part 120.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

100 ... Syringe filter assembly 110 ...
111 Outlet hole 112 Outlet pillar
120 ... connector 121 ... connector
121a ... outlet 122 ... isolated column
130 ... Filter 140 ... Filter plate
141 ... Suction hole 150 ... Case
151 ... But 160
170.Herbcase 171Hubneck
172 hub hub coupling 200 syringe
210 needle 220 cylinder
221 ... neck 222 ... neck coupling
H1 ... First locking member H2 ... 2nd locking member
G1 ... first coupling groove G2 ... second coupling groove

Claims (9)

1. A syringe filter assembly coupled to a needle portion of a syringe,
A discharge hole is formed in the center head in the shape of a shell, and is provided with a discharge column extending downward from the discharge hole. Blocking part;
A connecting portion inserted into the discharge column in a cylindrical shape having a groove formed in an upper direction;
It is provided at the inner center of the connecting portion in a columnar shape, and a lower end thereof is coupled to the lower surface of the connecting portion, and when the blocking portion moves downward, the discharge hole is blocked. Blocking column corresponding to the shape of the discharge hole;
A hole formed in a center of a disc shape and fitted into the lower outer side of the connection part to filter foreign substances of the chemical liquid sucked along the edge of the blocking part;
A filter plate having a plurality of suction holes formed at a center thereof in a disk shape disposed on a lower surface of the filter to be coupled to the lower end of the connection part and to facilitate suction of the chemical liquid passing through the filter; And
And a casing coupled from the lower side of the needle portion while having a blocking jaw bent inwardly along an upper edge in a cylindrical shape and surrounding the outer circumferential surface of the filter and the filter plate. 1. A syringe filter assembly coupled to a needle portion of a syringe,
A discharge hole is formed in the center head in the shape of a shell, and is provided with a discharge column extending downward from the discharge hole. Blocking part;
A connection portion which is extrapolated to the discharge column in a cylindrical shape in which a groove is formed in an upward direction;
It is provided at the inner center of the connecting portion in a columnar shape, and a lower end thereof is coupled to the lower surface of the connecting portion, and when the blocking portion moves downward, the discharge hole is blocked. Blocking column corresponding to the shape of the discharge hole;
A hole formed in a center of a disc shape and fitted into the lower outer side of the connection part to filter foreign substances of the chemical liquid sucked along the edge of the blocking part;
A filter plate having a plurality of suction holes formed at a center thereof in a disk shape disposed on a lower surface of the filter to be coupled to the lower end of the connection part and to facilitate suction of the chemical liquid passing through the filter; And
And a casing coupled from the lower side of the needle portion while having a blocking jaw bent inwardly along an upper edge in a cylindrical shape and surrounding the outer circumferential surface of the filter and the filter plate. The method according to claim 1 or 2,
The connecting portion
A filter assembly for a syringe, characterized in that a plurality of discharge holes are formed on the lower surface so that the chemical liquid can be discharged. The method according to claim 1 or 2,
The discharge column,
It has a first locking member bent along the lower edge,
The connecting portion
And a second catching member bent along an upper edge to be constrained with the first catching member. The method according to claim 1 or 2,
In this case,
Wherein an upper side is inserted into a lower side of the needle part and a lower side is inserted into a neck of the cylinder. The method according to claim 1 or 2,
In this case,
And a hub case having a hub neck portion on the upper side and being fitted to a lower side of the needle portion and a lower side to be fitted to a neck portion of the cylinder. The method of claim 6,
The hub-
Further comprising a hub neck coupling portion having a first coupling groove formed on an inner circumferential surface of the needle portion so that a lower edge of the needle portion can be inserted and fixed therein. The method of claim 7,
Wherein the neck portion of the cylinder has:
Further comprising a neck coupling portion having a second coupling groove formed on an inner peripheral surface of the hub case so that a lower edge of the hub case can be inserted and fixed. The method according to claim 1 or 2,
Further comprising a needle portion having a needle hole formed in a side surface of the needle needle to prevent foreign matter from being caught on the needle needle.

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