KR20160096405A

KR20160096405A - Filter tip for syringe to filter foreign substance in medical fluid

Info

Publication number: KR20160096405A
Application number: KR1020150017995A
Authority: KR
Inventors: 김주영
Original assignee: 김주영
Priority date: 2015-02-05
Filing date: 2015-02-05
Publication date: 2016-08-16

Abstract

The present invention relates to a filter tip for a syringe, comprising: a needle connection pipe which has a needle insertion space for accommodating a syringe needle inside and is detachably connected to a connection hub; and a plurality of porous filters which is provided on a front end of the needle connection pipe to contact an end unit of the syringe needle inserted in the needle insertion space, and where medical fluid is introduced onto a plate side, and a foreign substance blocking hole is formed by passing through in order to block the introduction of the foreign substances.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a filter tip for a syringe,

The present invention relates to a filter tip for a syringe, and more particularly, to a filter tip for a syringe that filters foreign matter such as a piece of glass into the needle when the ampule is filled with the drug solution.

Generally, a syringe is mainly used as a disposable syringe to prevent a secondary infection from occurring during the injection process. Disposable syringes are used by mixing the liquid and powder or injecting the drug solution from the ampoule. Ampoules are mainly made of glass or plastic, and when the ampoule is opened, glass powder, plastic and other impurities are generated. If the drug solution is sucked into the syringe from the opened ampoule, the foreign substance may be sucked at the same time as the drug solution. If such a foreign substance is injected into the human body, it is difficult to be discharged outside the human body, which may cause serious side effects.

In order to prevent such a problem, Japanese Patent No. 10-1247145 entitled " Safety Filter for Syringe and Syringe Using Syringe "has been disclosed.

1 is a schematic view showing a configuration of a syringe to which a conventional filter 10 is coupled. The conventional syringe is provided with a filter 10 in the coupling hub 20 of the injection needle 21 to filter foreign substances such as glass powder when the chemical liquid is sucked into the cylinder 30 through the injection needle 21 You can. However, the conventional filter 10 has a problem that the foreign substance attached to the filter 10 is injected into the patient as it is when the patient 10 is injected into the patient 10 without replacement of the injection needle 21.

Therefore, at the medical site, a needle equipped with a filter is used for sucking and filling the chemical solution with a syringe, and when injecting the chemical solution after filling the chemical solution, the injection needle is replaced with a new one and then injected. Replacement of the injection needle every time the patient is injected is not only cumbersome, but also has a problem that it can not be quickly coped with emergency patients.

In order to avoid such inconvenience, a filter for a syringe in the form of a valve is disclosed in Japanese Patent No. 10-1245378. The disclosed syringe filter has a structure in which foreign matter is collected in a trapping space when a chemical liquid is injected and foreign substances are not discharged when a chemical liquid is discharged. However, the syringe filter as described has an advantage that it is not necessary to replace the injection needle at the time of infusion of the chemical liquid and injection, but it is disadvantageous in that it is not economical due to high cost due to complicated construction.

An object of the present invention is to provide a filter tip for a syringe which has a simple structure and is easy to use for solving the above-mentioned problems.

It is another object of the present invention to provide a filter tip for a syringe which eliminates the risk of infecting the hands of the medical staff when the needle is attached to or detached from the needle.

It is still another object of the present invention to provide a filter tip for a syringe that allows a chemical liquid to flow smoothly into an injection needle.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

The object of the present invention can be achieved by a filter tip for a syringe detachably coupled to a coupling hub of a needle. A needle for a syringe filter tip of the present invention includes: a needle coupling tube having a needle insertion space for receiving the injection needle therein and being detachably coupled to the coupling hub; And a porous filter provided at a distal end of the needle coupling tube so as to contact the end of the needle inserted into the needle insertion space and having a plurality of foreign matter blocking holes through which the drug solution flows and the foreign matter is prevented from flowing, .

According to one embodiment, the porous filter is inserted into the needle coupling tube so as to cover the entire length of the entire end of the injection needle.

According to one embodiment, the apparatus further includes a protective cap surrounding the outside of the needle insertion tube.

According to an embodiment of the present invention, the needle coupling tube may include a hub coupling tube having a diameter gradually enlarged so that the coupling hub can be inserted into a rear end thereof.

According to an embodiment of the present invention, a tip of the needle coupling tube may be provided with a chemical liquid inflow pipe which receives the porous filter therein and has a plurality of chemical liquid inflow holes through which the chemical liquid flows into the porous filter side.

According to an embodiment of the present invention, the apparatus may further include a latch jaw which is vertically protruded along the circumferential direction between the chemical liquid inflow tube and the hub coupling tube and receives an external force in a direction in which the needle coupling tube is separated from the coupling hub have.

The filter tip for a syringe according to the present invention is detachably provided outside the needle. The filter tip for a syringe is coupled to the outside of the injection needle at the time of injection of the chemical liquid, and blocks the introduction of foreign matter into the injection needle. When the chemical injection is completed, the filter tip is separated from the injection needle. According to such a use method, the medical staff can solve the inconvenience of replacing the conventional injection needle.

In addition, since the filter tip for a syringe according to the present invention is used in addition to the injection needle at the time of injecting the chemical liquid, it can be used as it is without changing the design of the existing syringe. Further, since the outer shape of the needle is surrounded, contamination of the needle can be prevented.

In addition, since the filter tip for a syringe according to the present invention has a structure in which only a porous filter is combined with a needle coupling tube made of a plastic material, the structure is simple and the production cost is low and economical.

In addition, when a syringe filter tip of the present invention is coupled to a syringe from the viewpoint of a medical practitioner, it means that the syringe can be visually prevented from being recycled because it means that the syringe is an unused injector that has not yet been injected with a chemical solution.

FIG. 1 is a schematic view showing a coupling structure of a syringe having a conventional filter,
FIG. 2 is a perspective view showing a state in which a filter tip for a syringe according to the present invention is coupled to a syringe;
FIG. 3 is an exploded perspective view of the filter tip for a syringe according to the present invention,
4 is a cross-sectional view illustrating a process of injecting a chemical solution into a syringe through a filter tip for a syringe of the present invention.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

FIG. 2 is a perspective view illustrating a state where the filter tip 100 according to the present invention is coupled to the injector 200, and FIG. 3 is an exploded perspective view illustrating the structure of the filter tip 100 according to the present invention.

As shown in the figure, the filter tip 100 according to the present invention is used in combination with the injection needle 230 of the syringe 200.

The syringe 200 includes a cylinder 210 having a receiving space in which a chemical solution is received, a piston 220 which moves upward and downward along the inner wall surface of the cylinder 210 to form a pressure at which a chemical solution is introduced or discharged, 210). &Lt; / RTI >

A needle insertion tube 211 to which the injection needle 230 is coupled is formed at a distal end of the cylinder 210. The piston 220 moves to the upper portion of the cylinder 210 and forms a negative pressure in the cylinder 210 so that the injection needle 230 receives the chemical solution from the porous filter 120. In addition, the piston 220 moves downward from the upper portion of the cylinder 210, and causes the chemical liquid inside the cylinder 210 to be discharged to the patient through the injection needle 230. A coupling hub 231 coupled to the needle insertion tube 211 of the cylinder 210 is provided at the rear end of the injection needle 230.

The filter tip 100 of the present invention is coupled to surround the outside of the injection needle 230. The filter tip 100 is connected to the outside of the injection needle 230 when the injector 200 injects the drug solution F from the ampule A so that the foreign matter W contained in the drug solution F is injected into the injection needle 230 And when the injection of the chemical into the syringe 200 is completed, the injection needle 230 is separated from the injection needle 230.

The filter tip 100 is coupled to the outside of the injection needle 230 to filter the foreign matter W contained in the chemical solution F when the chemical solution F flows into the syringe 200 from the ampule, So that it does not flow into the injection needle 230.

The filter tip 100 includes a needle coupling pipe 110 for surrounding the outside of the injection needle 230 and a porous filter 210 inserted in an end of the needle coupling pipe 110 to filter the foreign substances W contained in the chemical solution F. [ (120), and a protective cap (130) covering the outside of the needle coupling tube (110).

The needle coupling tube 110 surrounds the outside of the injection needle 230 to prevent the injection needle 230 from being contaminated. A medical practitioner attaches the filter tip 100 to the injection needle 230 in order to inject the chemical solution F from the ampule A. [ At this time, when only the porous filter 120 is absent without the needle coupling tube 110, the hand of the medical staff can directly contact the outside of the injection needle 230 and be contaminated. In order to prevent this, the needle coupling tube 110 is provided so as to surround the outside of the injection needle 230.

The needle coupling tube 110 is provided at the rear end of the coupling tube main body 111 and is coupled to the coupling hub 231 of the injection needle 230 A liquid coupling pipe 113 and a chemical liquid inlet pipe 115 provided at the tip of the coupling pipe main body 111 so as to allow the chemical liquid F to flow therein, And a holding jaw 119 for holding the filter tip 100 so that a medical staff can separate the filter tip 100 from the injection needle 230.

The coupling tube main body 111 is formed with a needle insertion space 112 into which the injection needle 230 is inserted. The needle insertion space 112 is formed to have an inner diameter corresponding to the outer diameter of the injection needle 230. Thus, the position of the injection needle 230 can be stably fixed within the coupling tube main body 111.

The length of the coupling tube body 111 is determined by adding the insertion length of the porous filter 120 to the length of the injection needle 230. The coupling tube main body 111 may be formed of a plastics material.

The hub coupling pipe (113) is formed at the rear end of the coupling pipe body (111). In the hub coupling pipe 113, a coupling hub 231 of the injection needle 230 is inserted and supported. The hub coupling pipe 113 is formed so that the diameter gradually increases so that the medical needle can easily insert the needle 230 into the needle coupling tube 110 when the needle coupling tube 110 is coupled to the injection needle 230 . That is, the hub coupling pipe 113 is formed to have a gradually widened diameter in the form of a trumpet tube so that when the medical staff inserts the sharp injection needles 230 into the needle coupling tube 110, So that the injection needle 230 is guided to the needle insertion space 112 along the inclined surface.

The end of the hub coupling tube 113 is inserted into the coupling hub 231 so that the needle coupling tube 110 is fixed to the coupling hub 231. Whereby the position can be fixed when the chemical liquid (F) is injected from the ampule (A).

The chemical liquid inlet pipe 115 is provided at the tip of the coupling tube main body 111. The chemical liquid inlet pipe (115) is formed to have an outer diameter larger than the outer diameter of the coupling pipe body (111). A filter insertion space 117 into which the porous filter 120 is inserted is formed to communicate with the needle insertion space 112. As shown in FIG. 4, the filter insertion space 117 is formed to have a diameter larger than that of the needle insertion space 112. The porous filter 120 may be inserted into the filter insertion space 117 which is wider than the needle insertion space 112 so as to cover the entire end 233 of the injection needle 230.

A plurality of chemical liquid inflow holes 115a are formed on the outer circumferential surface of the chemical liquid inflow pipe 115. The chemical solution inflow hole 115a allows the negative pressure generated when the piston 220 of the syringe 200 is moved to the outside so that the chemical solution F can flow smoothly. The chemical solution inflow hole 115a serves to introduce the chemical solution F into the porous filter 120, so that the chemical solution inflow hole 115a may be formed to have a size allowing the foreign matter W to pass therethrough.

The length of the chemical liquid inlet pipe 115 is formed to be long enough to cover the entire porous filter 120. A plurality of chemical liquid inflow holes 115a are formed at regular intervals along the outer circumferential surface of the chemical liquid inflow pipe 115. Since the chemical liquid inflow hole 115a is formed to correspond to the entire area of the porous filter 120, the chemical liquid introduced through the chemical liquid inflow hole 115a flows into all the surfaces of the porous filter 120. Accordingly, since the pressure of the chemical liquid flowing into the porous filter 120 is dispersed, the force required for the medical staff to suck the chemical liquid F through the syringe 200 can be reduced.

The locking jaw 119 is formed to protrude between the chemical liquid inlet pipe 115 and the hub coupling pipe 113. The latching jaw 119 is used to separate the filter tip 100 for a syringe from the syringe 200 after the injection of the chemical liquid F into the syringe 200 is completed. The hooking jaw 119 is vertically protruded from the coupling tube main body 111 so as to be able to separate the needle coupling tube 110 from the coupling hub 231 by hooking the nail of the medical staff or the spout of the ampule A or other rigid object have.

As shown in FIG. 4, the latching jaw 119 is formed to be gradually larger in diameter from the front end to the rear end, and is formed perpendicular to the coupling tube main body 111. As a result, the engagement protrusion 119 has a generally trapezoidal cross-sectional shape.

The porous filter 120 is inserted into the tip of the needle coupling tube 110 to filter the foreign substance W contained in the chemical solution F to block the introduction of the foreign matter W into the injection needle 230. The porous filter 120 is formed of a porous material having a plurality of foreign matter blocking holes 121 penetrating the surface thereof. The porous filter 120 may be formed of a sponge material, for example.

The foreign matter blocking hole 121 is formed in a minute size that can block the foreign matter W such as a piece of glass generated when the ampule A is broken.

At the tip of the porous filter 120, a cap 123 having a diameter larger than the diameter of the filter insertion space 117 is formed. The cap 123 allows the porous filter 120 to remain inserted into the filter insertion space 117.

The porous filter 120 is inserted inside the chemical liquid inlet pipe 115 and filters the foreign substance W contained in the chemical liquid F flowing from the chemical liquid inlet hole 115a. The end portion 233 of the injection needle 230 is inserted into the porous filter 120 and fixed in position. The porous filter 120 is formed to surround the entire end 233 of the injection needle 230. Accordingly, only the chemical liquid F passing through the porous filter 120 can be introduced into the injection needle 230.

The use of the filter tip 100 for a syringe according to the present invention having such a configuration will be described with reference to Figs. 2 to 4. Fig.

The syringe filter tip 100 is manufactured by inserting the porous filter 120 into the chemical liquid inlet tube 115 formed at the tip of the needle coupling tube 110 as shown in FIG. The porous filter 120 is inserted into the filter insertion space 117 and the cap 123 is held in contact with the tip of the chemical liquid inlet pipe 115. The needle coupling tube 110 into which the porous filter 120 is inserted is covered by the protective cap 130 and is kept in a state of being shielded from external contamination. The syringe filter tip 100 is sealed and circulated inside a wrapping paper (not shown).

The medical staff joins the syringe filter tip 100 to the injection needle 230 before injecting the chemical liquid F into the syringe 200. [ The injection needle 230 is inserted into the hub coupling tube 113 of the needle coupling tube 110 in a state where the protective cap 130 is covered and the injection needle 230 is inserted into the needle insertion space 112. After the injection needle 230 is inserted to the end of the needle insertion space 112, the end portion 233 of the injection needle 230 is inserted into the porous filter 120 to fix the position. Alternatively, the manufacturer of the present invention may package the filter tip 100 for a syringe in a state in which the filter tip 100 is mounted on the syringe in the above-described manner.

2 is a perspective view showing the state of the syringe 200 coupled with the filter tip 100 for a syringe. In this state, the medical staff removes the protection cap 130 and inserts the needle 230 together with the filter tip 100 for a syringe into the ampule A as shown in Fig. The minute foreign matter W such as a piece of glass is mixed into the ampule A while the ampule A is being opened.

A negative pressure is generated in the cylinder 210 and the negative pressure is transmitted to the chemical liquid inflow pipe 115 through the chemical liquid inflow hole 115a through the chemical liquid F in the ampule A. [ . At this time, foreign matter W flows into the chemical liquid inlet pipe 115 together with the chemical liquid F.

Since the foreign matter blocking hole 121 is formed in the porous filter 120 accommodated in the chemical liquid inlet pipe 115 so that the foreign matter W can not enter the foreign substance blocking hole 121, the foreign matter W is adhered to the surface of the porous filter 120 And only the chemical liquid F is moved along the foreign matter blocking hole. The chemical liquid F is introduced through the end portion 233 of the injection needle 230 and then injected into the cylinder 210.

When the injection of the desired amount of the medicinal liquid F is completed, the medical staff hangs on the hook 119 on the spout (a) of the ampule A so that the needle coupling tube 110 is separated from the coupling hub 231 I give strength. Whereby the syringe filter tip 100 is detached from the injection needle 230. In addition, a nail or a hard material may be hooked on the hooking jaw 119 to separate the needle coupling tube 110 from the coupling hub 231.

The medical staff causes the syringe filter tip 100 to inject the drug solution F to the patient using the separated syringe 200. [

As described above, the filter tip for a syringe according to the present invention is detachably provided outside the injection needle. The filter tip for a syringe is coupled to the outside of the injection needle at the time of injection of the chemical liquid, and blocks the introduction of foreign matter into the injection needle. When the chemical injection is completed, the filter tip is separated from the injection needle. According to such a use method, the medical staff can solve the inconvenience of replacing the conventional injection needle.

The embodiments of the filter tip for a syringe of the present invention described above are merely exemplary and those skilled in the art will appreciate that various modifications and equivalent embodiments can be made without departing from the scope of the present invention. You will know. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: Syringe filter tip 110: Needle coupling tube
111: coupling tube main body 112: needle insertion space
113: hub coupling pipe 115: chemical liquid inlet pipe
115a: chemical solution inflow hole 117: filter insertion space
119: Engaging jaw 120: Porous filter
121: foreign matter blocking ball 123: cap
130: protective cap 200: syringe
210: cylinder 211: needle insertion tube
220: piston 230: needle
231: Coupling hub 233: Needle end
A: ampoule F: chemical solution
W: Foreign matter

Claims

A filter tip for a syringe detachably coupled to a coupling hub of a needle,
A needle coupling tube having a needle insertion space formed therein for receiving the injection needle therein and detachably coupled to the coupling hub;
And a porous filter provided at a distal end of the needle coupling tube so as to contact the end of the needle inserted into the needle insertion space and having a plurality of foreign matter blocking holes through which the drug solution flows and the foreign matter is blocked Features a filter tip for a syringe.

The method according to claim 1,
Wherein the porous filter is inserted into the needle coupling tube so as to cover the entire length of the entire end of the injection needle.

3. The method of claim 2,
And a protective cap surrounding the outside of the needle insertion tube.

The method of claim 3,
Wherein the needle coupling tube is provided with a hub coupling tube having a diameter gradually widened so that the coupling hub can be inserted into a rear end thereof.

5. The method of claim 4,
Wherein a tip of the needle coupling tube is provided with a chemical liquid inlet tube for receiving the porous filter therein and having a plurality of chemical liquid inflow holes for introducing the chemical liquid into the porous filter side.

6. The method of claim 5,
Further comprising an engagement protrusion formed between the drug solution inflow tube and the hub coupling tube so as to protrude perpendicularly in a circumferential direction and to receive an external force in a direction in which the needle coupling tube is separated from the coupling hub. tip.