KR101324555B1

KR101324555B1 - Hub with safety filter for syringe

Info

Publication number: KR101324555B1
Application number: KR1020130029678A
Authority: KR
Inventors: 이상근
Original assignee: 주식회사 티에이치엠코리아
Priority date: 2013-03-20
Filing date: 2013-03-20
Publication date: 2013-11-11

Abstract

There is provided a hub for a syringe having a safety filter that prevents the glass particles of the ampoule from being injected into the patient. The hub for a syringe according to an embodiment of the present invention includes a needle bundle having one needle coupled to one end, and one or more first through holes and one or more second through holes coupled to the needle bundle. It is composed of a guide valve and a flexible material and is coupled to the rear of the guide valve to open the second through hole of the guide valve when the injection liquid enters the cylinder, and close the second through hole of the guide valve when the injection liquid exits the cylinder. The valve, a filter member attached to the front of the guide valve and covering the first through hole, and assembled so as to be movable up and down in front of the filter member, are in close contact with the filter member when the injection liquid comes in and separated from the filter member when the injection liquid comes out. And a fixing body for fixing the guide valve inside the needle bundle. According to the present invention, there is no need for a separate operation such as inserting or removing a filter when sucking or releasing the injection, thereby simplifying the injection process while eliminating the possibility of injecting the glass particles of the ampoule into the patient.

Description

Hub with safety filter {Hub with safety filter for syringe}

The present invention relates to a hub for a syringe having a safety filter, and more particularly, the injection process is simple and ampoule by passing through the filter member when injecting the injection solution to the patient without injecting the injection liquid into the syringe. It relates to a hub for a syringe having a safety filter to prevent the injection of free particles into the patient.

In general, as shown in FIG. 1, the syringe 1 includes a cylindrical cylinder 10 having a space formed therein for storing an injection liquid therein, and a neck 15 positioned at the front side of the cylinder 10. And a syringe tip 20 connected thereto.

The syringe tip 20 has a hub 25 adapted to connect the injection needle 22 to the cylinder 10, which hub 25 is press-fitted to the neck portion 15 of the syringe 1.

The syringe 1 is also inserted into the cylinder 10 so as to be movable so that the plunger 30 sucks the injection liquid into the cylinder 10 or discharges the injection liquid stored in the cylinder 10 to the outside. It includes.

In order to inject the injection solution to the patient with the conventional syringe 1 as described above, the plunger 30 is brought into close contact with the inside of the cylinder 10, and then the upper portion 42 of the ampoule vial 40 containing the injection solution 60. ), The ampoule upper part 42 is broken and opened, the injection needle 22 is soaked through the opened space, and then the plunger 30 is retracted, and then the injection liquid 60 is injected into the cylinder 10. ) Is inhaled and contained.

However, when the upper part 42 of the ampoule vial 40 is broken and opened, some of the glass particles K are scattered and some enter the injection solution 60 of the ampoule vial 40. The glass particles K, which have entered the injection liquid 60, are mixed with the injection liquid 60 into the cylinder 10 when the injection liquid 60 is sucked using the syringe 1. Such injection liquid 60 ) Is injected into the patient, the glass particles (K) together with the injection liquid (60) is administered to the human body has a problem that has a fatal adverse effect on the health of the patient.

In order to solve this problem, Patent Publication No. 10-2005-0108169 proposes a syringe provided with a filter to protect the injection needle on the outside of the fixing member in addition to preventing foreign substances and antibacterial treatment. . The syringe of such a configuration filters the glass particles of the ampoule by the filter when aspirating the injection, but the injection process is cumbersome because when the injection to the patient has to remove the filter containing the ampoule glass particles.

In addition, Patent No. 981586 secures a safety filter tip equipped with a filter to the neck portion 15 of the syringe to suck the injection liquid from the ampoule, but after suctioning the injection liquid, the safety filter tip is removed again and the needle is removed. The injection process is also cumbersome because you have to insert it before plugging in.

In order to solve this problem, the present inventors proposed a safety filter for a syringe and a syringe having the same in Korean Patent Registration No. 1178986. Using a syringe with a safety filter for the syringe eliminates the need for additional action, such as inserting or removing the filter when sucking or injecting the injection, eliminating the possibility of injecting free particles from the ampoule into the patient. The process is simple. However, since the safety filter for the syringe is assembled in contact with the neck portion inside the cylinder of the syringe, the assembly is inferior, and when applied to an existing syringe, it takes up a space where the chemical liquid enters, causing an error in the chemical liquid scale. have.

SUMMARY OF THE INVENTION The present invention has been made in view of this point, and an object of the present invention is to provide a hub for a syringe having a safety filter that is easy to inject and easy to assemble in a production process while eliminating the possibility of injecting a glass particle of an ampoule into a patient. It is done.

A hub for a syringe according to an embodiment of the present invention includes a needle bundle having a needle coupled to one end, one or more first through holes and one or more second through holes, and coupled to the needle bundle. Composed of a guide valve and a flexible material, coupled to the back of the guide valve to open the second through-hole of the guide valve when the injection liquid enters the cylinder, and the second through hole of the guide valve when the injection liquid exits the cylinder A valve for closing, a filter member attached to the front of the guide valve to cover the first through hole, and assembled so as to be movable up and down in front of the filter member, in close contact with the filter member when the injection liquid comes in, and separated from the filter member when the injection liquid exits. A prevention valve and a fixing body for fixing the guide valve inside the needle bundle.

The guide valve has a disc shaped body in which a first through hole and a second through hole are formed, and the first through hole is located outward from the center of the disc than the second through hole. The filter member is attached to the body of the guide valve as a disc with an open center, and is configured such that the second through hole is positioned at the open part and the first through hole is located at the unopened part when attached to the guide valve.

A third through hole for fixing the valve is formed at the center of the body of the guide valve. The valve includes a pillar portion inserted into the third through hole, and a disc portion for opening or closing the second through hole. The guide valve includes a hollow cylindrical pillar formed between the first through hole and the second through hole on the body, and a cutout formed on an upper portion of the cylindrical pillar.

The filter member may use a paper filter, and may be attached to the guide valve by ultrasonic welding.

The inside of the needle bundle is formed with a projection or a recess for engaging the fixed body. The fixed body has a hollow shape to be coupled to the neck portion of the syringe, and the outer side of the fixed body is formed with a recess or projection having a shape corresponding to the protrusion or recess at a position corresponding to the protrusion or recess of the needle bundle. It is.

According to the present invention, there is no need for a separate operation such as inserting or removing a filter when sucking or releasing the injection, thereby simplifying the injection process while eliminating the possibility of injecting the glass particles of the ampoule into the patient. In addition, since the assembly is completed by assembling the safety filter assembly to the needle bundle and fixed with a fixed body, the production process is simple. In addition, since the hub in which the safety filter of the present invention is assembled to the existing syringe body can be used by assembling, the compatibility in use is also excellent.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory diagram for explaining a state in which glass particles are mixed when an injection liquid is contained from an ampule vial using a general syringe.
Figure 2 is an exploded perspective view showing the configuration of a hub for a syringe having a safety filter according to an embodiment of the present invention.
3 and 4 are exploded perspective views showing a more detailed configuration of the safety filter.
5 is an explanatory view showing a state in which the valve disc is flipped by the injection pressure of the injection liquid when the injection liquid is injected into the syringe.
Figure 6 is a cross-sectional view for explaining the principle of operation of the syringe hub with a safety filter of the present invention, showing the state when the injection liquid is injected into the syringe.
Figure 7 is a cross-sectional view for explaining the principle of operation of the syringe hub with a safety filter of the present invention, showing the state when the injection liquid is ejected out of the syringe.
8 is a view showing an example of a syringe equipped with a syringe hub of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

Figure 2 is an exploded perspective view showing the configuration of a hub for a syringe according to an embodiment of the present invention, Figure 3 and Figure 4 is an exploded perspective view showing a more detailed configuration of the safety filter.

Syringe hub 100 of the present invention is a needle bundle 150, a guide valve 110 assembled in the needle bundle 150, the valve 120 coupled to the guide valve, the guide valve as shown in FIG. Includes a fixing body 160 for fixing the filter member 130, the non-return valve 140, the guide valve 110 to be attached to the needle bundle 150 inside. In addition, a cover 170 may be further provided to protect the injection needle.

One end of the needle bundle 150 is coupled to the needle 151. Inside the other end of the needle bundle 150, the safety filter, that is, the guide valve 110, the valve 120, the filter member 130 and the check valve 140 is inserted and assembled.

One end 161 of the fixed body 160 presses the guide valve 110 toward the needle bundle 150 as shown in FIGS. 6 and 7 to fix the guide valve 110 inside the needle bundle 150. . The fixed body 160 has a hollow hollow shape so as to be coupled to the neck portion 210 of the syringe 200 (see FIG. 8), and the injection liquid enters or exits through the hollow portion 162. The inside of the needle bundle 150 is formed with a protrusion or recess 152 for coupling the fixed body 160, the outer side of the fixed body 160 corresponding to the protrusion or recess 152 of the needle bundle The concave portion or the protrusion 165 having a shape corresponding to the protrusion or the concave portion 152 is formed at the position, so that the fixing body 160 is fixed to the needle bundle 150.

The guide valve 110 includes a disc shaped body 111 as shown in FIGS. 2 to 4, and the disc shaped body 111 has one or more first through holes 115 and one or more second through holes. The ball 116 and the third through hole 117 is formed in the center. In the drawing, four first through holes 115 and two second through holes 116 are formed, but the number of first through holes and second through holes may be appropriately added or subtracted.

The guide valve 110 includes a hollow cylindrical column 113 formed on the body 111 between the first through hole 115 and the second through hole 116. Cylindrical column 113 includes an incision at the top. That is, the drawing shows a state in which a portion of the upper portion of the cylindrical column 113 is cut away, leaving only the support 114, and a space (cutout) is formed between the supports 114. According to the embodiment, it is also possible to form a plurality of through holes in the upper portion of the cylindrical column 113 to perform a role as an incision. Injecting the patient, the injection liquid is injected into the patient through the first through hole 115 and the incision.

As can be seen in the figure, the first through hole 115 is located outward from the center of the disc than the second through hole 116. The filter member 130 is attached to the body 111 of the guide valve 110 as a disc with an open center. When the filter member 130 is attached to the guide valve 110, the second through hole 116 is positioned at the open central portion and the first through hole 115 is positioned at the unopened portion, that is, the filter member. 130 is configured to cover the first through hole 115, the injection liquid passes through the filter member 130 when passing through the first through hole 115, the injection liquid passes through the second through hole 116 When the filter member 130 is not passed through. Various materials may be used as the filter member 130. For example, it may be configured as a filter made of paper, and may be attached to the guide valve 110 by ultrasonic welding.

The valve 120 includes a pillar portion 123 inserted into the third through hole 117 and a disc portion 121 for opening or closing the second through hole, and the pillar portion 123 passes through the third through hole. The valve 120 is fixed to the guide valve 110 by being inserted into the ball 117. The valve 120 may be formed of a material such that the whole or at least the disc portion 121 is flexible, for example, silicon or rubber.

Since the disc 121 of the valve 120 is made of a flexible material, when the injection liquid enters the cylinder, the disc 121 is flipped back to open the second through hole 116 of the guide valve 110. When the injection liquid exits from the cylinder, it is in the original position to close the second through hole 116 of the guide valve 110.

The pillar portion 123 may be provided with a protrusion 125 for fixing the valve 120 to the guide valve 110. The protrusion 125 serves as a latch for preventing the valve 120 from coming off the guide valve 110.

5 shows a state in which the disc 121 of the valve 120 is flipped backward. As shown in FIG. 5, when the disc 121 is flipped back, the second through hole 116 is opened, and the injection liquid is introduced into the cylinder through the second through hole 116, and thus the injection liquid is injected into the cylinder. The injection will not pass through the filter.

The non-return valve 140 is assembled to move up and down in front of the filter member 130. As shown in FIG. 6, when the injection liquid is injected into the syringe, the non-return valve 140 is in close contact with the filter member 130 by the pressure of the injection liquid to prevent the injection liquid injected into the filter member 130. . That is, when the injection liquid is injected into the syringe, the disc 121 of the valve 120 is flipped back as described above to open the second through hole 116 of the guide valve 110 and the first through hole 115 is opened. Since it is blocked by the non-return valve 140, the injection liquid is introduced into the cylinder only through the second through hole 116 of the guide valve 110.

In addition, when an injection is injected into the patient, that is, when the injection liquid is ejected out of the syringe, the non-return valve 140 is spaced apart from the filter member 130 by the pressure of the injection liquid ejected as shown in FIG. 7. As described above, when the injection liquid exits from the cylinder, the valve 120 closes the second through hole 116 of the guide valve 110, so that the injection liquid is formed through the first through hole 115 and the filter member 130. It passes through the bay and exits to the needle through the incision formed in the guide valve 110. Therefore, when the injection is released, the ampoule pieces that may be included in the injection liquid are blocked by the filter member 130.

Figure 8 shows an example of a syringe equipped with a syringe hub of the present invention. As can be seen in Figure 8, the syringe hub 100 of the present invention can be used in connection with the neck portion 210 of the conventional syringe 200.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more.

Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms used generally, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present invention.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

100 syringe hub,
110 guide valve,
115 first through hole,
116 second through hole,
117 third through hole,
120 valves,
121 disc,
123 pillars,
130 filter element.
140 check valve,
150 needle bundles,
160 fixed body.

Claims

A needle bundle with a needle coupled to one end,
A guide valve including one or more first through holes and one or more second through holes, and coupled to the needle bundle;
A valve made of a flexible material and coupled to the rear of the guide valve to open the second through hole of the guide valve when the injection liquid enters the cylinder, and close the second through hole of the guide valve when the injection liquid exits the cylinder; ,
A filter member attached to the front of the guide valve and covering the first through hole;
It is assembled to move up and down in front of the filter member is in close contact with the filter member when the injection liquid comes in, and the backflow prevention valve spaced apart from the filter member when the injection liquid exits,
Fixing body for fixing the guide valve inside the needle bundle
Hub for syringe having a.

The method of claim 1,
The guide valve has a disc shaped body in which a first through hole and a second through hole are formed.
The first through hole is located outward from the center of the disk than the second through hole,
The filter member may be attached to the body of the guide valve as a disc with an open center, and the second through hole may be positioned at an open portion and the first through hole may be positioned at an unopened portion when attached to the guide valve. For a syringe.

3. The method of claim 2,
A third through hole for fixing the valve is formed in the center of the body of the guide valve,
The valve includes a pillar portion inserted into the third through hole, and a disc portion for opening or closing the second through hole,
The guide valve has a hollow cylindrical pillar formed between the first through hole and the second through hole on the body, the hub for a syringe, characterized in that the incision formed on the upper portion of the cylindrical pillar.

The method of claim 1,
The filter member is a filter made of paper, the hub for a syringe, characterized in that attached to the guide valve by ultrasonic welding.

The method of claim 1,
The inside of the needle bundle is formed with a protrusion or a recess for coupling the fixed body,
The fixed body has a hollow shape so as to be coupled to the neck portion of the syringe, the outer side of the fixed body of the shape corresponding to the protrusion or recess in a position corresponding to the protrusion or recess of the needle bundle A hub for a syringe, characterized in that a recess or a protrusion is formed.