KR101868055B1 - Medical feeltering member for inning drug - Google Patents

Abstract

The present invention relates to an injection needle, a pouring tube for wrapping the injection needle, and a spring for providing an elastic force below the pouring tube, so that the pouring tube can be smoothly lifted and lowered by the spring, And the sweeping action of the injection needle against the outer circumference of the injection needle is smoothly performed through the corrugated tube so that the periphery of the injection needle is prevented from being contaminated by the chemical liquid, In order to accomplish this, a filter for injecting and delivering a chemical solution is formed by a main body, an injection part, and a filter structure, And a plurality of injection holes 121 formed at the other end of the injection needle 122; And a lifting plate 126 is integrally formed at an upper end so as to surround the outer needle of the injection needle 122. The lifting plate 126 seals the outer circumference of the injection needle 122, (124) for smoothly pouring the liquid through the opening (124); And between the corrugated pipe 124 and the main body 110 so that the upward movement of the corrugated pipe 124 smoothly works to seal the outer periphery of the injection needle 122 through the lifting plate 126, And a spring 128 for smoothly performing the operation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a medical feeler for a drug infusion filter,

The present invention relates to an injector structure of a filter for injecting a chemical solution improved in order to stably inject a chemical liquid and to prevent the remaining of a chemical liquid. More particularly, the present invention relates to an injector structure for injecting a chemical liquid, The sprinkle tube is smoothly lifted and lowered by the spring so that the self-elasticity of the tube is weakened by prolonged use, so that the sweeping action of the outer needle of the injection needle through the tube is smooth The injector structure of the injector for injecting a chemical solution improved to prevent the secondary injector from being stably injected and preventing the chemical solution from remaining in the vicinity of the injector needle, .

In general, a medical institution includes a disposable syringe as a medical device for injecting an injection into a patient. In the case of performing a fluid or blood transfusion therapy in a medical institution, a three-way valve is used to inject another drug solution or to collect fluid flowing in the fluid channel .

4, the upper part of the glass ampule 6 is broken as shown in Fig. 4 in order to fill the space in the cylinder of the syringe with the injection liquid. The tip of the injection needle 9 is inserted and the piston is moved to fill the injection liquid. In this process, when the ampule 6 is cut, fine glass powder is injected into the injection liquid contained in the ampule 6 Precipitated and precipitated fine glass powders are injected into the space of the cylinder together with the injectate solution to be administered to the patient as it is. When the glass powder is left in the blood of the patient's body or digested into the skin, There is a problem that adverse effects are caused.

Therefore, in some cases, the filter 4 is provided inside to protect the injection needle 9 and to prevent the introduction of foreign substances such as fine glass powder precipitated when the ampoule 6 filled with the injection liquid is cut, The needle 1 is used.

The filter needle 1 has a cylindrical body 7 into which an injection part of a syringe is inserted and an injection needle 9 integrally formed at the tip of the body 7 and a filter part 5 inserted therein Structure.

1 and 2, the filter 4 inserted between the upper and lower rubber rings 10 is inserted and then the filter portion 5 fused by high frequency is inserted into the body 7, So as to prevent the foreign substances such as fine glass powder precipitated when cutting the glass (6) from being injected and to use safely.

However, in the manufacturing process in which the filter 4 is fused to the filter ring 5 at high frequency in the state where the filter 4 is located between the rubber rings 10, the edge of the filter 4 is easily torn, and glass powder passes through the torn hole There is a problem that it can be introduced into the cylinder of the syringe without being filtered.

3, the filter 4 is inserted into the space between the suction unit 8 and the body 7, and the needle 4 is inserted into the space between the suction unit 8 and the needle 9, .

However, since the filter needle 1 is manufactured by separately manufacturing the body 7 and the suction portion 8, the manufacturing process is complicated and the manufacturing cost is increased.

Also, the filter 4 uses a membrane filter or the like. In this case, the membrane filter is deformed due to the pressure at the time of sucking and discharging the injecting liquid, and the filter structure is broken, so that foreign matters can not be filtered.

In addition to injecting the injectate directly into the patient using a syringe, there is a method of injecting the injectate using a three-way valve during transfusion or fluid therapy.

The conventional three-way valve includes a main body having a branch pipe through which a fluid can flow, which is connected to three branch openings, and a branch pipe which is constituted by a flow path switching portion and which is integrally formed with the flow path switching portion. So that the selection of the combination of the branch pipes through which the chemical solution communicated with the branch pipe is allowed to flow can be selected.

Among the three branch pipes in the conventional three-way valve, the first branch pipe and the second branch pipe are arranged so as to form a straight line flow path when they communicate with each other, and this flow path serves as the main line. Further, the branch pipe arranged so as to be vertically positioned on the main line is used as the third branch pipe, and the chemical liquid is mixedly injected in the third branch pipe or the fluid is collected. The flow path for communication is T-shaped.

However, the ampoule used in the injectable liquid container and the glass or rubber debris from the vial are mixed with the drug and are sucked into the syringe to enter the body when they are injected and usually stay in the site, but in some cases, Liver, spleen and many other organs to reach the kidney. If the glass or rubber debris obstructs the blood supply, it may block the blood supply and cause chronic tissue necrosis, hemangiomas, embolism, etc. In addition, the ampule-type anticancer drug injected into the vertebra can also enter the spinal fluid. You can even go to the brain.

In order to solve these problems, a medical three-way valve having a filter of a public utility model 2013-2001 has a third branch, which is provided for injecting an injection liquid from the outside, By installing the filter inside the engine, it is possible to filter the glass or rubber debris contained in the injection liquid injected through the third branch pipe.

However, injected liquid may be injected through the third branch tube branched in a T shape from the first and second branch tubes connected in a straight line, and the liquid may be injected in some cases. There is a problem that the liquid is not normally supplied due to the filter. That is, in the case of the injection liquid, since the injection liquid is pushed in at a high pressure, it can be injected through the filter. However, in the case of the liquid, it is impossible to apply the high pressure artificially.

In addition, when the filter is manufactured by processing a metal material, it is difficult to secure the airtightness by pressing the medical device formed of the resin material at the time of fitting by inserting the metal filter into the medical device, There is a problem that can not be done.

Further, when the filter is formed of a metal material, there is a possibility that the drug may be deformed upon contact with a drug having chemical properties, which poses a safety problem.

Registered Utility Model No. 20-449368 of Korea Register (July 6, 2010) Korean Patent Laid-Open Publication No. 2016-29497 (published on March 15, 2016)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above, and it is an object of the present invention to provide an injection needle, a corrugated tube for enclosing the injection needle and a spring for providing an elastic force below the corrugated tube, So that the periphery of the injection needle can be prevented from being contaminated with the chemical liquid by smoothly raising and lowering the bellows by the spring so that the self- To prevent the secondary medical accident from occurring in a stable manner, and to prevent the residual of the chemical liquid from being injected into the injector.

According to an aspect of the present invention, there is provided a filter for injecting and discharging a chemical liquid by a main body, an injector and a filter structure, An injection needle having one end fixed to the inside of the main body and a plurality of injection holes formed at the other end; And a lifting plate integrally formed at an upper end of the lifting needle so as to surround the outer periphery of the injection needle and to seal the outer periphery of the injection needle so that the injected medicament can be smoothly injected through the injection hole. And a spring formed between the corrugated pipe and the main body to smoothly lift and lower the corrugated tube so that the outer circumferential edge of the needle is sealed through the lifting plate and the sweeping action of the chemical liquid is smoothly performed.

In the present invention, the corrugated tube is formed of rubber or synthetic resin so as to have self-elasticity; It is preferable to include a plurality of wrinkles so that the elastic action is smoothly performed.

In the present invention, the injection hole of the injection needle is formed at the upper end of the injection needle; Are formed in plural numbers so as to have a height deviation; It is preferable that the length of the injection hole is made to have a height deviation of 1: 0.2 to 0.5 ratio.

In the present invention, it is preferable that the spring is a compression spring or a tension spring.

In the present invention, the filter structure includes: a sealing ring having a through hole at the center; A first valve having at least one or more first discharge holes in which the sealing ring is formed at one end, at least one first inlet hole in which an insertion hole and a chemical solution flow in the center are formed, Wow; A second valve formed at one end of the first valve and having at least one second inlet hole formed at the center thereof and a path through which the chemical solution is discharged at the outer peripheral side; A filter disposed at one end of the second valve and having a third inflow hole at the center thereof for filtering foreign substances contained in the chemical solution when the chemical solution is discharged; And a check valve supported on the first valve to guide the inflow of the chemical solution and prevent the chemical solution from flowing out into the inflow path when the chemical solution is discharged; The first valve includes: a depression hole having a predetermined depth in the center; A second insertion hole formed to have a diameter smaller than the diameter of the recessed hole so that one end of the check valve is supported; A conical contact hole extending from the second insertion hole to an end thereof; At least one first inlet hole formed between the depressed hole and the contact hole to form a path through which the chemical solution flows; And at least one or more first and second sloped first and second sloped sloped sloped sloped sloped sloped sloped sloped sloped sloping sloped sloped sloped sloped sloped sloped sloped sloped sloped sloped sloped sloped sloped sloped sloped sloped Discharge hole; And an insertion protrusion protruding from the other end by a predetermined length so as to stably fix the position to the second valve.

According to the present invention, it is possible to constitute an injection needle, a corrugated tube for enclosing the injection needle, and a spring for providing an elastic force below the corrugated tube so that the self-elasticity of the corrugated tube is weakened by prolonged use, So that the sweeping up action of the injection needle against the outer periphery of the injection needle is smoothly performed through the corrugated pipe so that the periphery of the injection needle is prevented from being contaminated by the chemical liquid, have.

In addition, since a plurality of injection holes are formed above the injection needles and have a constant height deviation from the injection holes located in the symmetrical direction, the chemical solution is smoothly injected due to the deviation of the injection holes There is an effect that the chemical liquid remaining in the periphery of the injection needle can be smoothly introduced into the inflow hole by the scraping action of the corrugated pipe to prevent contamination of the injection needle.

1 is a plan view showing a filter unit in a conventional filter needle;
2 is a sectional view showing a filter unit in a conventional filter needle;
3 is an exploded perspective view of a conventional filter needle;
4 is a front view showing a state in which a conventional glass ampule is opened.
5 is a schematic cross-sectional view of a filter for injecting a chemical solution according to the present invention.
6 is a state in which another instrument is coupled to a filter for injecting a chemical solution according to the present invention.
7 is a state in which a chemical solution is injected through a filter for injecting a chemical solution according to the present invention.
8 is a view illustrating a state in which the chemical liquid remaining on the outer periphery of the injection needle is reintroduced into the injection hole while the corrugated tube according to the present invention is returned.
FIG. 9 is a state in which a chemical solution is discharged from the filter for injecting a chemical solution according to the present invention. FIG.
10 is a state diagram coupled to another mechanism of the filter for injecting a chemical solution according to the present invention

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

5 to 10, the filter 10 for injecting a medical fluid according to the present invention includes a main body 110, an injection part 120 formed at an inner end of the main body 110, And a filter structure 130 formed at the other end of the filter structure 130.

The main body 110 is a means for supporting the injection unit 120 and the filter structure 130.

The main body 110 has a female screw 112 formed on its inner side so that other mechanisms are connected to one end thereof to inject or discharge a chemical solution and a coupling protrusion 114 protruding by a predetermined length to have one end of a device such as a syringe coupled to the other end . In this case, a filter structure 130 is formed at a portion where the female thread 112 of the main body 110 is positioned and the injection portion 120 is formed at the other side of the filter structure 130, .

The injection unit 120 is provided at one end of the main body 110 and is a means for supporting the chemical liquid to stably inject the liquid.

The injection unit 120 includes an injection needle 122 fixed to the inside of the main body 110 and formed to have a predetermined length and a corrugated tube 124 having an elastic body formed to have a predetermined length to surround the outer circumference of the injection needle 122 And a spring 128 positioned between the bellows pipe 124 and the main body 110. The bell pipe 124 is provided at the upper end of the bell pipe 124,

The injection needle 122 has an injection hole 121 at an upper end thereof and a communication hole 123 communicating with the injection hole 121 and communicating with the outside through a lower end.

In addition, the injection needle 122 is formed in a conical shape and is formed integrally with the main body 110. That is, the lower end is formed integrally with the main body 110 and has a shape that becomes sharp as it goes upward.

The injection hole 121 is formed in a long hole shape.

In addition, the injection holes 121 are formed in a plurality of mutually symmetrical directions at the upper ends of the injection needles 122. In this case, the plurality of injection holes 121 are configured such that the injection holes 121 formed in mutually symmetrical directions have a predetermined height deviation. The height difference of the injection holes 121 preferably has a height deviation of 1: 0.2 ~ 0.5 in length of the injection holes 121 in comparison with the length of the injection holes 121.

This is because the drug injected through the device coupled to the coupling protrusion 114 of the main body 110 is rapidly injected through the injection hole 121 located above and the corrugated tube 124 rises after the injection is completed, The medicine remaining in the vicinity of the needle 122 is reintroduced into the injection hole 121 by the sweeping force of the corrugated tube 124 and the residual drug is promptly reintroduced due to the height deviation.

The communication hole 123 forms a flow path for smoothly injecting or discharging the chemical solution injected through the injection hole 121 through the inside thereof.

The bellows pipe 124 is formed so as to surround the outer periphery of the injection needle 122 to prevent the injection needle 122 from being brought into contact with the outside so that the injection needle 122 is contaminated by an external foreign matter prevent.

Further, the corrugated pipe 124 is formed to have a plurality of corrugations to have an elastic force.

Further, a lift steel plate 126 is integrally formed on the upper end of the bellows pipe 124. When the corrugated pipe 124 is inserted into the injection needle 122, the lift plate 126 is seated on one end of the injection needle 122, that is, Thereby forming an assembled structure in which the corrugated pipe 124 is located.

The corrugated pipe 124 and the steel plate 126 are formed of rubber or synthetic resin having excellent elasticity. In this case, the corrugated pipe 124 and the raised steel plate 126 are preferably made of silicon.

Further, the corrugated pipe 124 and the rising steel plate 126 include an antibacterial material.

Therefore, the corrugated pipe 124 is inserted through the opened lower end of the injection needle 122, and the lift plate 126 is mounted on the upper end of the injection needle 122. In this case, when a pushing force is applied due to the engagement of one end of the other mechanism, for example, the syringe, at the upper end of the lifting plate 126, the upper end of the lifting plate 126 is pushed downward, The upper injection hole 121 of the injection needle 122 is exposed to the outside and the corrugated pipe 124 integrally formed with the elevated steel plate 126 is pressed and pressed. Thereafter, when the pressing force is released due to the release of the other mechanism, the bellows pipe 124 is returned to the original position by its own elastic force.

In this case, the lifting plate 126 of the bellows pipe 124 is pierced by the upper end of the injection needle 122, but is naturally closed when it is released from the upper end of the injection needle 122 by self- Thereby preventing external foreign matter from being arbitrarily infiltrated.

Meanwhile, the coupling protrusion 114 of the main body 110 is formed in such a shape that one side of the syringe, for example, coupled to the lifting plate 126 is coupled. The coupling protrusions 114 are formed in the shape of male threads as shown in the figure, and a female screw is formed at one end of the other syringe, for example, the syringe.

The spring 128 is disposed between the corrugated pipe 124 and the body 110 to provide a separate elastic force to the corrugated pipe 124 so that the urging force of the corrugated pipe 124 causes the urging force of the foreign matter To prevent infiltration and contamination. That is, since the self-elasticity of the corrugated pipe 124 is weakened by the use for a long time, the smooth sealing action can not be performed. Therefore, the foreign matter is introduced into the injection needle 122 and the drug remains in the injection needle 122, It is possible to provide a separate elastic force by the spring 128 so that the sealing function of the bellows pipe 124 can be smoothly performed even if it is used for a long period of time.

The spring 128 consists of a compression or tension spring. Of course, the present invention is not limited thereto, and any structure can be used as long as it provides a stable elastic force to the bell tube 124. For example, rubber or synthetic resin having excellent self-elasticity, that is, silicone may be formed in a shape such as a plate or a circle so as to enhance the elasticity.

The filter structure 130 is disposed inside the main body 110 to prevent the chemical liquid injected to the other side through the main body 110 from being discharged.

The filter structure 130 includes a seal ring 1310, a first valve 1320, a second valve 1330, a filter paper 1340, and a check valve 1350.

The sealing ring 1310 seals the periphery of the first valve 1320 so that the chemical liquid only flows into the center, and when the chemical liquid is discharged, the sealing force is released by the discharge pressure of the chemical liquid, So as to be smoothly discharged to the outside.

The sealing ring 1310 is formed of silicone, rubber, or synthetic resin excellent in self-elasticity.

Further, the sealing ring 1310 is formed with a through hole 1312 through which the chemical liquid flows into and out from the center.

The first valve 1320 is a means for closely supporting the sealing ring 1310 at one end to support the inflow and discharge of the chemical solution according to the close contact of the sealing ring 1310.

The first valve 1320 includes a depression hole 1321 having a predetermined depth at the center, a second insertion hole 1322 formed at a predetermined length in the depression hole 1321, And a contact hole 1323 formed to the end. The diameter of the second insertion hole 1322 is smaller than the diameter of the depression hole 1321 and the diameter of the contact hole 1323 is larger than the diameter of the conical shape of the second insertion hole 1322 .

The first valve 1320 includes at least one first inlet hole 1324 for securing a path through which the chemical liquid flows into the main body 110. In this case, it is preferable that the first inflow hole 1324 is configured to communicate between the depression hole 1321 and the close hole 1323.

The first valve 1320 includes at least one first discharge hole 1326 formed in the outer circumferential side of the first valve 1320 and forming a discharge path for the chemical liquid discharged by the discharge pressure of the syringe, .

In addition, the first valve 1320 includes an insertion protrusion 1328 protruding by a predetermined length. That is, a depression hole 1321, a second insertion hole 1322, a contact hole 1323, and a first inlet hole 1324 are formed at the center of the insertion protrusion 1328, And a first exhaust hole 1326 is formed on the outer peripheral side.

The second valve 1330 supports the first valve 1320 to smoothly operate the check valve 1350.

The second valve 1330 includes a third insertion hole 1332 formed at a predetermined depth in the center and into which the insertion protrusion 1328 of the first valve 1320 is inserted and a third insertion hole 1332 formed in the third insertion hole 1332, At least one second exhaust hole 1336 formed in the outer peripheral side of the third insertion hole 1332 and forming a path through which the chemical solution is discharged, .

The insertion protrusion 1328 of the first valve 1320 inserted into the third insertion hole 1332 is formed to have a length such that a predetermined space is formed without being in close contact with the third insertion hole 1332, And causes the injection fluid to flow through the second inflow hole 1334 according to the operation of the valve 1350.

The filter paper 1340 is a means for closely adhering to one end of the second valve 1330 to filter foreign substances contained in the chemical liquid, that is, pieces of glass, etc., when the chemical liquid is discharged.

The filter paper 1340 is made of a material and a size capable of easily filtering a piece of glass or the like.

In addition, the filter paper 1340 includes a third inflow hole 1342 through which a chemical solution flows.

The check valve 1350 is disposed on the first valve 1320 and operates to smoothly flow the chemical liquid.

The check valve 1350 includes a stretchable portion 1352 formed at a predetermined length in the center, a latching portion 1354 formed at one end of the stretchable and contractible portion 1352, and a latching portion 1354 formed at the other end of the stretchable and contractible portion 1352 And a tight contact portion 1356.

The extension / contraction portion 1352 is inserted into the second insertion hole 1322 of the first valve 1320.

The stopper 1354 is inserted into the depression hole 1321 of the first valve 1320 so that the position of the check valve 1350 is fixed. That is, the engagement portion 1354 is engaged with the step formed at the difference in size between the depression hole 1321 and the second insertion hole 1322, thereby fixing the position of the check valve 1350.

The tight contact portion 1356 is configured to be closely attached to the contact hole 1323 of the first valve 1320. In this case, the close contact portion 1356 is formed in the same or similar shape as the conical close contact hole 1328, so that the close contact portion 1356 is kept in close contact with the close contact hole 1328.

Also, the check valve 1350 is formed of silicon, rubber, or synthetic resin having self-elasticity.

Meanwhile, the filter structure 130 exemplifies one example, and the present invention is not limited thereto. For example, the filter structure 130 may include a filter capable of filtering foreign substances such as glass powder or rubber remaining in the drug, and a filter having a reversible structure preventing the injected drug from flowing back toward the injection needle 122 Can be used. In addition, the filter structure 130 may be omitted in some cases.

The state of use of the filter for injecting a chemical solution as described above will be described below.

First, one end of another device, for example, a syringe (hereinafter, referred to as a 'syringe' for convenience of explanation) is coupled to the coupling protrusion 114 formed at one end of the main body 110, And the other mechanism is connected through the formed female screw 112.

When the suction force is applied to the syringe, the chemical solution stored in the other instrument is introduced into the syringe through the main body 110 by the suction force of the syringe.

When a syringe is connected to one end of the main body 110, one end of the syringe is coupled through the coupling protrusion 114 of the main body 110 and moves downward along the spiral direction. At this time, The lifting plate 126 of the injection unit 120 formed inside the housing 110 moves together with the downward movement of the syringe due to the pressing force.

The corrugated pipe 124 formed at the lower end of the elevated steel plate 126 is pushed by the movement of the elevated steel plate 126 so that the corrugated pipe 124 is pierced by the upper end of the injector needle 122, The lifting plate 126 is moved downward in a state in which it is in close contact with the outer peripheral edge of the injection needle 122. In this case, the spring 128 located below the bellows pipe 124 is pressed to form a compressed state.

The injection hole 121 formed in the upper end of the injection needle 122 is opened to the outside by the lifting plate 126 descending due to the action. And the chemical solution stored in the other mechanism is injected into the injection hole 121 by communicating with the mechanism. In this case, since the injection holes 121 are formed with a plurality of heights, the drugs injected through other mechanisms are injected through the injection holes 121 quickly.

Also, as the filter structure 130 located at one side of the injection unit 120 is kept open by the suction force of the syringe, the chemical liquid flows smoothly into the syringe.

One end of the check valve 1350 formed in the filter structure 130 is pulled by the suction force of the syringe to open the inflow path of the chemical liquid, And flows into the inside of the syringe.

That is, the check valve 1350 is formed at one end of the check valve 1350 by the suction force, while the retaining portion 1354 at the upper end is retained in the depression hole 1321 of the first valve 1320, So that the tight contact portion 1356 having stretchability is pulled.

Accordingly, the contact hole 1323 of the first valve 1320 in which the tight contact portion 1356 is in close contact is opened, and the first inlet hole 1324 of the first valve 1320 is opened, The chemical liquid flows through the first inlet 1324 of the first valve 1320 to the second inlet 1334 of the second valve 1330 and the third inlet 1342 of the filter paper 1340 ) Into the syringe.

At this time, when the movement of the syringe is stopped, the suction force is reduced by the chemical liquid filled in the syringe, and the contact portion 1356 of the check valve 1350 is closed by the extinction suction force, And is adhered to the adhered hole 1323 of the base plate 1323.

That is, the close contact portion 1356 of the check valve 1350 pulled by the vacuum pressure returns to the original state due to the self-elasticity of the check valve 1350 due to the disappearance of the suction force, Is immediately brought into close contact with the contact hole 1323 of the first valve 1320 to block the first inflow hole 1324 of the first valve 1320 to block the inflow of the chemical solution immediately.

Further, when the syringe is moved again, the injection liquid is re-introduced into the syringe by the above-described method.

That is, since the check valve 1350 is formed to have its own elasticity, the inflow of the chemical liquid can be freely controlled by the suction force of the syringe. This is because, in the case of a conventional syringe, there is a problem in that it is difficult to adjust the chemical liquid flowing into the cylinder by not reacting immediately to the vacuum pressure acting on the movement of the piston, This is solved by the elasticity of.

A state in which the other mechanism is connected to the main body 110 formed at one end of the syringe and the chemical solution injected into the syringe is re-injected into the other mechanism will be described below. Connect other equipment. A filter structure 130 is formed inside the main body 110 where the female screw 112 is located.

At this time, the foreign substance contained in the chemical liquid is filtered by the filter paper 1340 of the filter structure 130.

In this case, the chemical solution may be discharged to the third inflow hole 1342 formed at the center of the filter paper 1340. However, since the check valve 1350 supported by the first valve 1320 is closely attached, do.

The chemical solution that has passed through the filter paper 1340 is discharged to the first discharge hole 1326 of the first valve 1320 through the second discharge hole 1336 of the second valve 1330.

At this time, as the sealing ring 1310 which is in close contact with the first valve 1320 is lifted by the discharge pressure of the chemical liquid discharged through the first discharge hole 1326 of the first valve 1320, 110 to one side of the other.

As a result, the chemical liquid passes through the filter paper under the pressure of the squeezing force of the syringe, and the foreign substance contained in the injected liquid is sequentially passed through the second and first valves 1330 and 1320, (112). ≪ / RTI >

On the other hand, when the syringe is used, when the syringe connected to one end of the main body 110 is removed, the corrugated tube 124 subjected to the pressing force by the syringe is returned to the original position by the elastic force. The resilient return force of the spring 128 acts on the corrugated tube 124 due to the release of the pressing force of the other mechanism by keeping the spring 128 located below the corrugated tube 124 in the compressed state, The elastic tube 124 smoothly returns to its original position.

At this time, when the corrugated pipe 124 is returned to the home position, the lifting plate 126 located at the upper end of the corrugated pipe 124 is also lifted and returned to the home position, (122) is closed to prevent foreign matter from contaminating the injection needle (122).

At this time, a plurality of injection holes 121 formed in the injection needle 122 are formed to have a height deviation, and the injection needle 121 is connected to the periphery of the injection needle 122 through the injection hole 121, The drug remaining in the injection needle 121 is first reintroduced and as the remnant drug is reintroduced into the injection hole 121 located above by the continuous sweeping action of the bell tube 124, Thereby preventing the drug from remaining in the vicinity of the drug delivery channel 122.

Meanwhile, as shown in FIG. 10, an example is shown in which one side of the three-way valve 10 is detachably or integrally coupled to be connected to another mechanism.

Meanwhile, the main body 110 may be configured to be separated into the first main body and the second main body.

That is, the first main body has a coupling protrusion 114 at one end, the injection unit 120 is formed at the inner side, the second main body has a female screw 112 at one end, and a filter structure 130 are configured.

The above description is only one example for implementing the infusion section structure of the filter for injecting the medicament solution, which is improved in order to stably inject the medicament liquid and to prevent the remaining of the medicinal solution. The present invention is not limited to the above embodiment. It will be understood by those skilled in the art that various changes may be made without departing from the spirit of the invention.

110: main body 120: injection part
121: Infusion ball 122: Infusion needle
123: communicating hole 124: corrugated tube
126: a steel plate 128: a spring
130: Filter structure

Claims (5)

1. A filter for injecting a chemical liquid, comprising: a main body; an injection unit; and a filter structure,
The injection unit 120 includes an injection needle 122 having one end fixed to the inside of the main body 110 and a plurality of injection holes 121 formed at the other end;
And a lifting plate 126 is integrally formed at an upper end so as to surround the outer needle of the injection needle 122. The lifting plate 126 seals the outer circumference of the injection needle 122, (124) for smoothly pouring the liquid through the opening (124); And
The swirling action of the chemical liquid is smoothly performed while the outer periphery of the injection needle 122 is sealed through the lifting plate 126 due to smooth movement of the bellows pipe 124 between the bellows pipe 124 and the main body 110. [ A spring (128) to be applied to the body;
Wherein the injector structure of the filter for injecting the chemical solution is improved in order to stably inject the chemical solution and to prevent the remaining of the chemical solution.
[3] The apparatus according to claim 1, wherein the corrugated pipe (124)
Formed of rubber or synthetic resin to have self-elasticity;
A plurality of wrinkles for smoothly performing the elastic action;
Wherein the injector structure of the filter for injecting the chemical solution is improved in order to stably inject the chemical solution and to prevent the remaining of the chemical solution.
The injection needle according to claim 1, wherein the injection hole (121) of the injection needle (122)
Formed at the upper end of the injection needle 122;
Are formed in plural numbers so as to have a height deviation;
The length of the injection hole 121 is set to have a height difference of 1: 0.2 to 0.5;
Wherein the injector structure of the filter for injecting the chemical liquid is improved in order to prevent the stable injection of the chemical liquid and the remaining of the chemical liquid.
The spring according to claim 1, wherein the spring (128)
Compression or tension spring;
Wherein the injector structure of the filter for injecting the chemical liquid is improved in order to stably inject the chemical liquid and to prevent the chemical liquid from remaining.
The filter structure according to claim 1, wherein the filter structure (130)
A sealing ring 1310 having a through hole 1312 formed at the center thereof;
At least one first inlet hole 1324 is formed at the center of the sealing ring 1310 and the insertion hole 1322 and the chemical liquid are introduced thereinto. A first valve (1320) in which at least one first discharge hole (1326) is formed;
At least one second exhaust hole 1336 is formed at one end of the first valve 1320 and at least one second inlet hole 1334 is formed at the center and a path for discharging the chemical solution is formed at the outer peripheral side A second valve (1330) comprising:
A filter paper 1340 formed at one end of the second valve 1330 and having a third inlet hole 1342 formed at the center thereof for filtering foreign substances contained in the chemical liquid when the chemical liquid is discharged; And
And a check valve (1350) supported on the first valve (1320) to guide the inflow of the chemical solution and prevent the chemical solution from flowing out into the inflow path when the chemical solution is discharged;
The first valve 1320 includes: a depression hole 1321 having a predetermined depth at the center;
A second insertion hole 1322 formed to have a diameter smaller than the diameter of the depression hole 1321 to support one end of the check valve 1350;
A conical contact hole 1323 that widens from the second insertion hole 1322 toward the end;
At least one first inlet hole (1324) formed between the depression hole (1321) and the contact hole (1323) to form a path through which the chemical solution flows;
And is formed at the outer peripheral side to form a discharge path of the chemical liquid. When the liquid is discharged, a discharge pressure is applied to the through hole 1312 of the sealing ring 1310 formed at one end, At least one first exhaust hole (1326); And
An insertion protrusion 1328 protruding from the other end by a predetermined length to support the second valve 1320 so as to stably fix the position thereof;
Wherein the injector structure of the filter for injecting the chemical solution is improved in order to stably inject the chemical solution and to prevent the remaining of the chemical solution.

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