WO2015102218A1

WO2015102218A1 - Filter needle

Info

Publication number: WO2015102218A1
Application number: PCT/KR2014/010279
Authority: WO
Inventors: 김성민; 강호철
Original assignee: 동국대학교 산학협력단
Priority date: 2014-01-03
Filing date: 2014-10-30
Publication date: 2015-07-09

Abstract

The present invention relates to a filter needle, which is coupled between a fixed member provided with a needle and a disposable syringe, for filtering foreign substances in liquid medicine during an injection, and the filter needle comprises: an outer housing to the front end of which the fixed member is coupled and to the rear end of which the disposable syringe is coupled; and a filter device, which is provided inside the outer housing, for allowing the liquid medicine supplied from the fixed member to the disposable syringe to pass through while filtering the liquid medicine supplied from the disposable syringe to the fixed member.

Description

Filter needle

The present invention relates to a filter needle, specifically used to be mounted on the front end of the syringe or three-way stopcock, the foreign matter inside the syringe or the inside of the ringer is filtered when the chemical liquid flows into the human body from the ampoule or ringer The present invention relates to a filter needle, which increases convenience and safety.

In general, a syringe is used to administer to an infected patient. In order to prevent a secondary infection from occurring during injection, a disposable syringe is mainly used, and such a disposable syringe is used to mix a medicine and a powder or to inject only a medicine. do.

At this time, the chemical liquid is contained in the ampoule mainly made of glass or plastic, so when the ampoule is opened, other foreign substances such as glass powder or plastic powder generated at the cutting line are generated.

The ampoules are often made of glass in order to prevent contamination during storage and transportation, and these ampoules break a part to make an inlet or force a needle into a rubber-closed stopper to inhale the liquid. In this process, fine glass powder or rubber pieces are mixed with the chemical solution and flow into the syringe.

When the inhalation of the drug solution containing such a foreign substance with a syringe, the foreign substance is inhaled at the same time as the drug solution, there was a problem that a lot of side effects occur in the patient when injected into the human body.

Recently, in order to improve the above problems, it has been proposed to install a filter in the needle holding member to filter foreign substances such as glass powder when the drug is sucked into the cylinder through the needle, but in this case, replacement of the needle If there is no injection to the patient as it is, there is a problem that the foreign matter attached to the filter is injected again into the patient as it is.

Therefore, in the medical field, a needle equipped with a filter is used to inject and fill a medicine with a syringe, and when a medicine is injected into a patient after filling the medicine, the needle is replaced with a new one and then injected. Doing.

As such, this series of tasks is very cumbersome when injected into a patient, and it is not possible to respond quickly to emergency patients, and these disposable syringes use a very large amount per day. There has been a problem that the exponential increase of waste adversely affects the environment.

In addition, such medical waste is to be separated from the general waste to be treated, there is a problem that the treatment cost increases accordingly.

The present invention has been invented to solve the above problems, the object of the invention is that the filter needle between the cylinder and the needle of the syringe is perfect through the filter of the filter needle during injection even if foreign matter is introduced when filling the syringe with the chemical liquid In addition, the present invention provides a filter needle which can be injected into a patient as it is without changing the needle even in the state of filling the drug solution.

The filter needle according to the present invention for achieving the technical problem as described above is coupled between the fixed member with a needle and a disposable syringe to filter the foreign matter contained in the chemical liquid, the fixing member is coupled to the front end External housing coupled to the disposable syringe at the rear end; And a filter device provided inside the outer housing and passing the chemical liquid supplied from the fixing member to the disposable syringe as it is, while filtering the chemical liquid supplied from the disposable syringe to the fixing member.

The filter device is an inner housing which is provided to be movable to the front and rear ends of the outer housing inside the outer housing, coupled to the inside of the inner housing and projected to the front end of the inner housing opening and closing to open and close the opening of the outer housing An opening and closing member having an opening and closing portion formed with a ball, characterized in that it comprises a filter is provided on the rear end of the opening and closing member and the coupling member coupled to the rear end of the inner housing.

The filter device, when the suction of the disposable syringe moves to the rear end of the outer housing by the suction force to open the opening of the outer housing to supply the chemical liquid introduced into the outer housing from the fixing member to the disposable syringe as it is, disposable When the syringe moves to the front end of the outer housing by the compressive force, the opening of the outer housing is closed to filter the chemical liquid introduced into the outer housing from the disposable syringe through the filter, and then the opening and closing hole of the opening and closing member. It is characterized in that the supply to the fixing member through.

The opening and closing member is formed of a rubber having elasticity, characterized in that it is provided in a conical shape that gradually increases in diameter from the front end portion formed in the opening and closing hole to the rear end portion.

The opening and closing hole is maintained in a closed state by the adhesive force due to elasticity, and when the pressure of the chemical liquid is generated from the rear end of the opening and closing member is gradually expanded to open and pass the chemical liquid.

The outer surface of the inner housing is characterized in that at least one first passage is formed in the longitudinal direction.

The outer housing is characterized in that the filter device is built-in, the outer case is formed in the injection hole formed in the front end, and a closing member coupled to the rear end of the outer case.

While supporting the filter device, the finishing member is characterized in that the supporting portion is formed with a chemical liquid passage through which the chemical liquid passes.

The closure member is characterized in that the luer lock is coupled to the defect groove of the disposable syringe.

According to the filter needle of the present invention, first, the three-way stopcock provided in the fluid line of the general syringe and ringer consisting of a cylinder and a piston can be used by mounting the filter needle, foreign matter in the process of filling and injecting the chemical liquid filter Since it is filtered by the effect of increasing the safety.

Second, it is possible to filter the injection of foreign substances together when injecting the drug solution into the human body of the patient, and in the process of filling and injecting the drug solution as before, it is possible to inject the patient without replacement of the needle for convenience and safety This has the effect of being increased.

Third, because the inhalation and discharge path of the drug solution is divided, there is no fear that foreign substances are administered together when the drug solution is discharged, and thus it is convenient to inject the drug solution immediately after inhaling the drug solution without the need to replace the injection needle. It is effective to respond quickly.

Fourth, even if the foreign substance inhaled by the syringe contains fine foreign matter, it is filtered by the filter provided in the filter needle and remains inside the syringe cylinder, so there is no risk of foreign substances being discharged when injecting the chemical to the patient. There is an effect that can be received.

1 is a cross-sectional view showing a syringe provided with a filter needle of the present invention.

2 is a perspective view of the filter needle of FIG.

3 is an exploded perspective view of FIG. 2;

4 is a cross-sectional view of FIG.

5 and 6 are views showing the use state of the filter needle of the present invention, Figure 5 is a view showing the operating state of the filter needle when injecting the syringe piston, Figure 6 is a view showing the operating state of the filter needle when compressing the syringe piston Figure shown.

Figure 7 is a perspective view showing the filter needle of the present invention inserted into a three-way stopcock (3way stopcock).

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiment of the present invention may be modified in various forms, the scope of the invention should not be construed as limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those skilled in the art. Therefore, the shape of the elements in the drawings and the like may be exaggerated to emphasize a more clear description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the subject matter of the present invention are omitted.

Hereinafter, exemplary embodiments of the filter needle of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a disposable syringe with a filter needle of the present invention, Figure 2 is a perspective view of the filter needle of Figure 1, Figure 3 is an exploded perspective view of Figure 2, Figure 4 is a cross-sectional view of FIG.

Referring to FIG. 1, the disposable syringe 100 according to the present invention is for forcibly inhaling or forcibly discharging a chemical liquid, and the syringe cylinder 110 for storing the chemical liquid and the chemical liquid stored in the syringe cylinder 110. And a syringe piston 120 for compressing and discharging, and the injection hole 111 of the syringe cylinder 110 is provided with a medicine bottle (not shown) in which a chemical solution is stored or a fixing member 130 provided with a needle 131 for injection into a human body. Is connected.

On the other hand, the drug solution stored in the vial may contain a foreign substance, if the drug solution containing this foreign material is injected into the human body, especially when a drug solution containing a foreign substance harmful to the human body is injected into the human body a medical accident occurs There is a problem.

In order to prevent this, the disposable syringe 100 according to the present invention includes a filter needle 200 to filter the foreign substances contained in the chemical liquid and to be injected into the human body, and the filter needle 200 refers to FIGS. 1 and 2. When the needle is disposed between the disposable syringe 100 and the fixing member 130 provided with the needle 131, the chemical liquid supplied from the disposable syringe 100 to the needle 131 is filtered to needle the chemical liquid containing no foreign matter. Inject through the human body 131.

That is, the filter needle 200 according to the present invention, as shown in Figures 2 to 4, is coupled between the fixed member equipped with a needle and a disposable syringe for filtering and injecting foreign substances contained in the chemical liquid, shear The outer housing 210 to which the fixing member 130 is coupled to the portion and the injection hole 111 of the syringe cylinder 110 is coupled to the rear end, and is provided inside the outer housing 210 and external from the syringe cylinder 110. It includes a filter device 220 for supplying to the needle 131 of the fixing member 130 after filtering the chemical liquid flowing into the housing 210.

The outer housing 210 is for connecting the fixed member with a needle and a disposable syringe. The outer housing 210 has a cylindrical shape and an outer case 211 having an opening 211 a to which the fixing member 130 is coupled to the front end portion, and the outside. It includes a closing member 212 is coupled to the rear end of the case 211 and the disposable syringe 100 is coupled.

On the other hand, at the rear end of the closing member 212 is formed a luer lock (212b) coupled to the coupling groove 111a of the disposable syringe 100, the filter needle 200 and the disposable syringe (2) by the luer lock (212b) It is possible to increase the bondability of 100) and to use various kinds of disposable syringes interchangeably.

The filter device 220 is provided inside the outer housing 210 to pass the chemical liquid supplied from the fixing member 130 to the disposable syringe 100 as it is, and is supplied from the disposable syringe 100 to the fixing member 130. The chemical liquid is filtered.

In other words, the filter device 220 does not filter the chemical liquid sucked into the disposable syringe 100 from the vial, while filtering the chemical liquid discharged from the disposable syringe 100 to the fixing member 130.

For example, the filter device 220 includes an inner housing 221, an opening and closing member 222, a filter 223, and a coupling member 224.

The inner housing 221 is provided inside the outer housing 210, and moves in the longitudinal direction of the outer housing 210, that is, from the front end portion of the outer housing 210 to the rear end portion, and the through hole 221a in the front end portion. ).

Meanwhile, at least one first passage 221b is formed in an outer side surface of the inner housing 221, and the first passage 221b is a chemical liquid passage formed between the inner housing 221 and the outer housing 210. As a result, more smooth movement of the chemical liquid can be induced.

That is, the inner housing 221 is supplied to the disposable syringe 100 through the first passage (221b) the chemical liquid introduced into the outer housing 210 from the fixing member 130 when the disposable syringe 100 is suctioned (Fig. 5), when the disposable syringe 100 is compressed, the chemical liquid introduced into the outer housing 210 from the syringe cylinder 110 is supplied to the fixing member 130 through the through hole 221a (see FIG. 6).

The opening and closing member 222 is for opening and closing the outer housing according to the suction or compression of the disposable syringe, the opening and closing ribs 222a coupled to the inside of the inner housing 221, and extends from the opening and closing ribs 222a and through holes ( It includes an opening and closing portion (222b) protruding to the 221a and the opening and closing hole (222b-1) is formed in the tip.

Here, the opening and closing member 222 is formed of a conical non-toxic rubber having elasticity, and is provided in a conical shape that gradually increases in width from the transfer part to the rear end (left to right when viewed in FIG. 4).

Here, the opening and closing hole (222b-1) is kept in a closed state by the adhesive force due to the elasticity, at this time, even if the pressure of the chemical liquid occurs in front of the opening and closing member 222, the opening and closing hole (222b-1) is kept in a closed state On the other hand, when the pressure of the chemical liquid is generated in the rear of the opening and closing member 222 is gradually expanded and opened to pass the chemical liquid.

When the pressure is generated in the front end portion of the opening and closing member 222, the front end of the opening and closing hole (222b-1) is in contact with the point that the pressure does not pass through the opening and closing hole (222b-1) The opening 211a of the outer housing 210 is opened while moving to the rear end of the outer housing 210 together with the housing 221, and the pressure is discharged through the outer peripheral surface of the opening 211a and the inner housing 221. 100). Subsequently, when pressure is generated at the rear end of the outer housing 210, the opening 211a is closed while moving to the front end of the outer housing 210 together with the inner housing 221, while the opening and closing hole 222b-1 is pressurized. Open by being expanded by, and the pressure is introduced into the fixing member 130 through the opening and closing hole (222b-1).

The filter 223 is to filter foreign substances contained in the chemical liquid passing through the inside of the opening and closing member 222, and is provided in the inner housing 221 and closes the rear end of the opening and closing member 222.

That is, the filter 223 filters the foreign matter contained in the chemical liquid by passing through the filter 223 before the chemical liquid passes through the opening and closing hole 222b-1 of the opening and closing member 222.

The coupling member 224 is coupled to the rear end of the inner housing 221 to fix the opening and closing member 222 and the filter 223 provided inside the inner housing 221 so as not to move.

That is, the coupling member 224 is coupled to the coupling rib 224a coupled to the rear end of the inner housing 221, and coupled to the inside of the inner housing 221 to fix the filter 223 and the opening and closing member 222. Section 224b.

Meanwhile, the finishing member 212 supports the filter device 220 and is formed with a plurality of support parts 212a formed with a chemical liquid passage through which the chemical liquid passed through the outside of the filter device 220 passes.

The filter device 220 having such a configuration opens the opening 211a formed at the front end of the outer housing 210 while moving to the rear end of the outer housing 210 by suction when the disposable syringe 100 is suctioned. The chemical liquid introduced into the outer housing 210 from the fixing member 130 is supplied to the disposable syringe 100 as it is. When the disposable syringe 100 is compressed, the opening 211a of the outer housing 210 is closed while moving to the front end of the outer housing 210 by the compressive force, thereby flowing from the disposable syringe 100 into the outer housing 210. The filtered chemicals are supplied to the fixing member 130.

Accordingly, the filter device 220 may inject the chemical liquid without foreign substances into the human body by filtering the chemical liquid supplied to the needle 131, thereby increasing safety.

The use state of the filter needle according to the present invention having such a configuration will be described.

As shown in FIG. 5, the filter needle 200 is coupled to the front end of the disposable syringe 100, and the fixing member 130 having the needle is coupled to the front end of the filter needle 200.

Then, the upper end of the ampoule (not shown) is broken to pull the syringe piston 120 of the disposable syringe 100 while the needle 111 is inserted to suck the chemical into the syringe cylinder 110.

At this time, the chemical liquid passing through the fixing member 130 flows into the outer housing 210 of the filter needle 200 while pressing the filter device 220 to move the filter device 220 to the rear end of the outer housing 210. Thus, foreign matters such as glass powder of the chemical liquid and the axle introduced into the outer housing 210 are filtered through the first liquid passage 221b of the inner housing 221 and the chemical liquid passage of the support part 212a in the filter device 220. It flows into the disposable syringe 100 as it is.

On the other hand, the front end of the opening and closing hole (222b-1) of the opening and closing member 222b in the filter device 220 is closed due to the point contact does not pass the chemical liquid (see arrow shown in Figure 5).

Subsequently, when all the chemicals in the ampoule are introduced into the syringe cylinder 210 of the disposable syringe 100, the needle 310 is inserted into the human body and the syringe piston 120 is pressed.

Then, as shown in FIG. 6, the chemical liquid of the syringe cylinder 210 is introduced into the human body through the needle 131 of the filter needle 200 and the fixing member 130 by the pressure of the syringe piston 120.

At this time, the filter device 220 moves to the first half of the outer housing 210 by the pressure of the chemical liquid introduced into the outer housing 210 of the filter needle 200, thereby closing the opening 211 a, and the chemical liquid is filtered. The filter does not pass through the space between the 220 and the outer housing 210 and passes through the filter device 220.

That is, the chemical liquid introduced into the outer housing 210 is introduced into the inner housing 221 through the coupling member 224, the foreign matter is filtered while passing through the filter 223, and the opening / closing hole of the opening / closing member 222 ( 222b-1) is introduced into the fixing member 130 by pressing and opening the rear end portion.

Hereinafter, in describing other embodiments according to the present invention, the same reference numerals are used for components having the same configuration and function as the above-described embodiment, and redundant descriptions are omitted.

7 is a perspective view showing the filter needle of the present invention inserted into a three-way stopcock.

The filter needle 200 according to the present embodiment may be inserted into the three-way stop cock 400 as shown in FIG. 7. In this case, when the fluid set 410 is inserted into the rear end of the filter needle 200, the fluid is inserted and coupled by a forced fitting, thereby increasing the pressure inside the three-way stopcock 400 and the internal pressure of the filter needle 200. Therefore, the opening and closing hole 222b-1 of the opening and closing member 222 can be opened without an external pressing force. Therefore, the chemical liquid filtered through the filter 223 may be injected into the human body through the opening and closing hole 222b-1 and the three-way stop cock 400.

As described above, according to the filter needle of the present invention, since the filter needle may be used as a single unit and may be used regardless of any injection product, it is possible to filter the injection of foreign substances together when the medicine is injected into the human body of the patient. In the process of filling and injecting the drug solution as in the past, the patient can be injected as it is without replacing the needle, thereby increasing convenience and safety.

The embodiment of the filter needle of the present invention described above is merely illustrative, and those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. There will be. Therefore, it will be understood that the present invention is not limited to the forms mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents, and substitutes within the spirit and scope of the invention as defined by the appended claims.

Claims

In the filter needle coupled between the fixed member having a needle and a disposable syringe for filtering and injecting foreign substances contained in the chemical liquid,

An outer housing to which the fixing member is coupled to a front end and the disposable syringe is coupled to a rear end; And

The filter needle is provided inside the outer housing and passes the chemical liquid supplied from the fixing member to the disposable syringe as it is, while the chemical liquid supplied from the disposable syringe to the fixing member comprises a filter device for filtering. .
The method according to claim 1,

The filter device is an inner housing which is provided to be movable to the front and rear ends of the outer housing inside the outer housing, coupled to the inside of the inner housing and projected to the front end of the inner housing opening and closing to open and close the opening of the outer housing Filter needle characterized in that it comprises an opening and closing member having an opening and closing portion formed with a ball, a filter provided at the rear end of the opening and closing member and filters the chemical liquid, and a coupling member coupled to the rear end of the inner housing.
The method according to claim 2, wherein the filter device,

When the disposable syringe is moved to the rear end of the outer housing by the suction force, the opening of the outer housing is opened to supply the chemical liquid introduced into the outer housing from the fixing member to the disposable syringe as it is,

When the disposable syringe moves to the front end of the outer housing by the compressive force, the opening of the outer housing is closed to filter the chemical liquid introduced into the outer housing from the disposable syringe through the filter, and then the opening and closing of the opening member. Filter needle characterized in that it is supplied to the fixing member through a ball.
The method according to claim 2,

The opening and closing member is formed of a rubber having elasticity, the filter needle, characterized in that provided with a conical shape gradually increasing in diameter from the front end to the rear end formed with the opening and closing hole.
The method according to claim 2,

The opening and closing member is formed of a rubber having elasticity, the filter needle, characterized in that provided with a conical shape gradually increasing in diameter from the front end to the rear end formed with the opening and closing hole.
The method according to claim 2,

At least one first passage in a longitudinal direction on an outer surface of the inner housing.
The method according to claim 1,

The outer housing is a filter needle, characterized in that the filter device is built, the outer case is formed in the injection hole is formed in the front end, and the closing member is coupled to the rear end of the outer case.
The method according to claim 7,

The filter member, characterized in that the support member is formed while supporting the filter device, the support portion formed with a chemical liquid passage through which the chemical liquid passes.
The method according to claim 7,

The closing member is a filter needle, characterized in that the luer lock is coupled to the defect groove of the disposable syringe.