KR20150143131A - A filter unit for a syringe - Google Patents

Abstract

The present invention relates to a filter and, more specifically, to a filter unit which is formed to filter an internal impurity inside a container of injection solution such as ample during a suction or an injection of the injection solution. The filter unit according to the present invention comprises: a hollow injection body part, having a first filter and a second filter which are different from each other in size of air gaps mounted on inside; and a hollow hub, forcibly coupled to one side of the injection body part. The injection body part includes a filter supporting unit, having a radial shape, and each supporting piece thereof extends radially with respect to a center. Therefore, the filter unit for a medical syringe according to the present invention prevents deformation of the filter which can occur during a manufacturing process or when using the same, and removes various foreign substances such as a bubble and fine particle as well as broken pieces of glass. Further, the filter unit for a medical syringe according to the present invention has an advantage of being used together with a multi-directional and functional stopcock as well as a general syringe.

Description

 BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a filter, and more particularly to a filter unit configured to filter an impurity in a liquid storage container such as an ampoule when an injection liquid is sucked and injected.

In general, injections administered to a patient by means of a syringe are dispensed into vials with a rubber stopper applied to glass ampoules or glass bottles. The injections in ampoules or vials are injected into the patient using a syringe. In the course of inhalation of the injectate with the syringe, the ampoule is broken and the rubber fragments, The problem is often occurring.

When injections are injected into a patient through injection syringes, foreign substances such as glass fragments or rubber debris, which are injected into the syringe together with the injection liquid, travel around the patient's blood vessels to accumulate in the body part and cause serious problems such as complications It causes.

In order to solve this problem, conventionally, when an injection liquid is sucked into a syringe, foreign substances such as glass fragments or rubber pieces are filtered through a filter.

Korean Patent No. 10-0981586 discloses a structure for filtering out foreign substances introduced into a syringe using a filter. 1 and 2 show a syringe safety filter tip 10 as a syringe disclosed in Korean Patent No. 10-0981586.

Referring to FIGS. 1 and 2, the syringe safety filter tip 100 includes a hub 10 connected to a neck portion of a syringe, a syringe suction portion 15 integrally formed on a front side of the hub 10, And a bushing 30 for fixing the filter 20 inside the hub 10. The bushing 30 is tightly coupled to the recessed portion 33 formed in the hub 10 so that the filter 20 is brought into close contact with the latching jaw 22. In this configuration, foreign matter such as glass particles is removed from the filter 20 through the space 40 and injected into the syringe body.

However, such conventional safety filter tip 100 for a syringe can be loosened in fixing of the filter 20 fixed by the bushing 30 inside the hub 10. Further, in the process of sucking the injection liquid in the injection liquid container and the ampoule into the syringe body, deformation and flow of the filter 20 and the bushing 30 are caused by the suction force, so that the foreign substances in the injection liquid container and the ampoule are not effectively filtered . Further, since the bushing 30 is tapered in the direction of suction of the injection liquid as shown in the drawing, there is a problem that the filter 20 can not be firmly fixed in a configuration that can be withdrawn in the process of suctioning the injection liquid.

As a result, the function of the filter for removing foreign substances such as glass particles and rubber pieces, which is the object of the invention, has failed.

In addition, since the safety filter tip 100 for a conventional syringe made of a plastic material is manufactured in a flexible form, it is difficult to easily fix the hub 10 when the hub 10 is fixed to the syringe tip 20 in future use. Further, since the suction unit 15 is not rigid when injecting the injection liquid into the ampule glass bottle, it is difficult to suck the injection liquid inside the amp, and the filter 20 and the bushing 30 are forced to be fixed The defective rate is large and the damage of the filter and the working efficiency are lowered. The safety filter tip 100 thus manufactured sucks the injection liquid of the injection liquid container and the ampule into the cylinder of the syringe cylinder and is disposed of, thereby causing the problem that the medical waste is excessively generated.

In addition to the conventional stable filter tip 100 for a syringe shown in FIGS. 1 and 2, various filter members have now been developed and used in medical applications. However, the injection needle for sucking the injection liquid is made of a sharp and sharp stainless steel material, which may lead to inconvenience that the medical practitioner may be stuck with, and may cause another medical accident or the like. Stainless steel needles need to be picked up separately and therefore cost double and unnecessary work time.

In addition, since the conventional filter members are mainly developed for filtering glass fragments generated in glass ampoules, the function of removing air bubbles, other particulates, and contaminants generated in the air during injection is limited.

Korean Registered Patent No. 10-0981586 (Sep. 3, 2010), "Safety Filter Tips for Syringes"

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art, and it is an object of the present invention to provide a filter member which does not tear the filter during the manufacturing process of the filter member and does not cause defects such as deformation due to heat, And to provide a filter unit.

It is another object of the present invention to provide a filter unit which can be used in combination with other medical devices such as a multi-directional stopcock and a set of liquids and a common needle when an injection solution is administered to a patient.

Still another object of the present invention is to provide a filter unit that more effectively filters contaminants such as glass fragments or air bubbles and other particulates when sucking an injection liquid into a syringe body to prevent a second disease of a patient There is.

This makes it possible for the patient to provide safer treatment, lower medical costs, and more convenient and safer equipment for users in charge of medical procedures.

In order to solve the above and other objects,

A hollow injection body having a first filter and a second filter mounted thereon, the hollow filter having a cavity size different from that of the first filter, and a hollow hub forcibly coupled to one side of the injection body,

Wherein the injection body is provided with a radial filter support portion in which each support piece extends radially with respect to the center.

In the present invention, a fluid hole for fluid flow is formed at the center of the radial filter support portion.

In the present invention, the inner portion of the injection body has a portion formed stepwise inward, and the radial filter support portion is integrally formed or detachably mounted on the portion.

In the present invention, the hub is forcibly coupled to the inner circumferential surface of the injection body, and the coupling surface of the radial filter support portion mounted on the injection body portion and the hub coupled to the injection body portion, And the second filter is pressed and fixed.

The present invention is characterized in that a leakage ring, which can be generated in the suction or infusion process, is inserted between the filter and the coupling surface of the hub, and a fixing ring capable of firmly supporting the leakage and the first and second filters is inserted .

According to the present invention, a suction nozzle for sucking an injection liquid is integrally formed at an end of the injection body, and a groove is formed on an outer periphery of the extension part.

The groove is configured to be able to easily convert the suction filter into the injection filter by breaking the suction nozzle without using a separate replacement operation when using the suction filter member and urgently changing the injection filter member.

At this time, in the present invention, the suction nozzle is preferably one or two kinds selected from the group consisting of a biocompatible silicone urethane hollow neutral material, silicone, polyurethane, polyurethane sulfone, polyester and polyamide or other environmentally friendly materials Or more.

Wherein the first filter has a void of less than 5 microns and the second filter has a void of 5 microns or more and the first filter is disposed in direct contact with the radial filter support.

According to the present invention, a plurality of protrusions are formed in the circumference of the hub in the longitudinal direction to facilitate the coupling of the hub and the injection or suction body.

The filter unit member according to the present invention can be removed from the conventional manufacturing method to prevent deformation of the filter that may occur during the manufacturing process and use.

In addition, by having a dual filter structure, the conventional filter structure expands to filter out only glass fragments, thereby removing glass fragments as well as various foreign substances such as bubbles and fine particles.

It can be used in combination with a multidirectional functional stopcock as well as a patient administration using an injection needle, thereby increasing the utilization thereof.

As a result, the filter unit of the present invention can exhibit an effect of reducing the cost of the product by increasing the utilization while lowering the product defect rate.

In addition, when other medical devices and filter units are used, it is possible to provide ease of use by easily combining and separating after use.

In addition, patients can be provided with safer treatments, reduced medical costs, and more convenient and safer equipment for users in charge of medical procedures.

1 shows a safety filter tip for a conventional syringe.
FIG. 2 is a view showing the components of a conventional safety filter tip for a syringe in isolation.
3 is a view illustrating an example of using a filter unit for injecting an injection solution according to an embodiment of the present invention.
4 is an exploded view showing the main use filter unit shown in Fig.
5 is a view illustrating a separated state of the main-use filter unit according to an embodiment of the present invention.
Fig. 6 is a cross-sectional view showing the joined state of the main usage filter unit shown in Fig. 5;
7 is a view illustrating a combined state of the main-use filter unit according to another embodiment of the present invention.
8 is an exploded view of a filter unit according to another embodiment of the present invention.
9 is a cross-sectional view showing the combined state of the filter unit shown in Fig.
10 is a view showing an example of the use of a filter unit for sucking an injection liquid according to an embodiment of the present invention.
11 is an exploded view showing the main use filter unit shown in Fig.
12 is a view illustrating a filter unit according to another embodiment of the present invention.
13 is a view showing a suction tube provided with a corrugated tube according to another embodiment of the present invention.
14 is a perspective view of a multi-directional stopcock according to another embodiment of the present invention.
15 is another perspective view of the multi-directional stopcock shown in Fig.
16 is an exploded view of a filter unit and a multi-direction stopcock according to another embodiment of the present invention.
17 is a cross-sectional view of the filter unit of Fig. 16;
18 is an exploded perspective view of the filter unit of Fig.
FIG. 19 is a top view showing a state in which a multi-directional stopcock and a filter unit are combined according to another embodiment of the present invention. FIG.
FIG. 20 is a top view showing a state in which the multi-directional stopcock and the filter unit are combined according to another embodiment of the present invention.

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

3 is a diagram illustrating an example of using a filter unit 110 for injecting an injection solution according to an embodiment of the present invention. 3, the filter unit 110 according to the present invention is composed of a hub 114 coupled with the neck portion 20 of the syringe and an injection body portion 110A coupled with the injection needle. In this case, the filter unit 110 of the present invention is used for injecting the injection fluid contained in the syringe body 10 into the patient. The injection neck 104 of the injection body 110A is engaged with the nozzles of the syringe needle or the multi-direction stopcock 130. [ An example of use coupled with the nozzles of the multi-directional stopcock 130 will be described in Figures 11 and 12 below.

Fig. 4 is an exploded view showing the main use filter unit 110 shown in Fig. 4, when the filter unit 110 according to the present invention is coupled to the injection body 110A, the internal components of the filter unit are a first filter 111, a second filter 112, 113) are combined.

The internal components will be described in more detail in the following figures.

Fig. 5 shows an exploded state of the injecting filter unit 110 connected to the injection body 110A according to an embodiment of the present invention, and Fig. 6 shows a cross-section of the coupled state.

The filter unit 110 shown in Figs. 5 and 6 has a cylindrical shape and includes an injection body portion 110A having a nut-shaped nut portion 110M in the inner peripheral surface of a space formed therein, and an injection body portion 110A having an injection- And has a hub 114 having a bolt-shaped bolt portion 114N to be engaged.

The filter unit 110 includes a first filter 111 and a second filter 111 formed between the body 110A and the hub 114 to form a double filter having a circular cross section and contacting the injection body 110A, And includes a stationary ring 113 which is in contact with the second filter 112, the second filter 112 and the hub 114 and is fitted in the inner space of the injection body portion 110A and is circular in cross section.

A radial filter support portion (not shown) having an opening 110A2 through which the injection liquid passes radially and which supports the first filter 111, the second filter 112 and the fixing ring 113 is formed on the inner peripheral surface of one end of the injection body 110A 110A1 are formed. The radial filter support 110A1 prevents the deformation of the duplex filters 111 and 112 composed of the first filter and the second filter by supporting and supporting the pressure applied to the filter evenly while passing the injection liquid when the injection liquid is sucked. The radial filter support 110A1 is formed integrally with the injection body 110A. The fixing ring 113 is directly pressed against the second filter 112 when the nut portion 110M of the injection body portion 110A and the bolt portion 114N of the hub 114 are engaged, And enhances the sealing force when injecting or sucking the injected liquid and the liquid to prevent leakage or leakage of the liquid.

Inside the hub 114, a cylindrical opening is formed to allow the injection liquid to flow. A plurality of protrusions 115 are formed on the outer surface of the hub 114 to insert the filters 111 and 112 and the fixing ring 113 into the injection body 110A and insert the nut 110M of the injection body 110A, And it performs slip prevention function so that the sealing force is strongly squeezed when it is fixed by turning and fitting.

The first filter 111 and the second filter 112 function to filter the injected liquid as it passes through, thereby removing foreign matter such as glass fragments, fine particles, and bubbles contained in the injected liquid. The first filter 111 filters less than 5 microns impurities and the second filter 112 filters more than 5 microns impurities.

The first filter 111 and the second filter 112 are preferably configured to selectively displace their positions depending on the position, that is, the direction of the fluid flow according to the selective use of injecting or sucking injection fluid or the like.

  The first filter 111 and the second filter 112 may be implemented with a microfine filter, a soggy-filament filter, a membrane filter, or the like.

7 is a view illustrating a main-usage filter unit 110 according to another embodiment of the present invention. 7, the radial filter support 110A1 is integrally formed with the hub 114 at one end of the hub 114, so that the first filter 111, the second filter 112, So that the stationary ring 113 can be supported. At this time, the first filter 111, the second filter 112, and the fixing ring 113 are fixed to the radial filter support 110A1 provided on the injection body 110A and the radial filter support 110A1 provided on the hub 114, Since the both sides are supported by the capillary tube 110A1, the shape can be maintained more stably when the injection liquid passes. In this case, as a modified example, the fixing ring 113 may be omitted and only the first filter 111 and the second filter 112 may be used.

Fig. 8 shows a separate state of the injecting filter unit 110 connected to the injection body 110A according to another embodiment of the present invention, and Fig. 9 shows a cross-section of the coupled state.

The embodiment shown in Figs. 8 and 9 is similar to the embodiment shown in Figs. 5 and 6, except that the radial filter support 110A1 supporting the filters 111 and 112 is separate from the injection body 110A .

That is, the radial filter support portion 110A1 is formed as a mutually separated form rather than being integral with the injection body portion 110A, and is separated and coupled.

Here, when the injection body 110A and the hub 114 are engaged, the radial filter support 110A1 serves to prevent deformation and damage of the filter by supporting the filters 111 and 112 in the injection body 110A do. Since the fixing ring 113 serves as a packing between the filters 111 and 112 and the bolt 114N of the hub 114, it is possible to prevent leakage and leakage of injected liquid due to pressure during suction or injection of the injected liquid.

10 is a view showing an example of the use of a filter unit for sucking an injection liquid according to an embodiment of the present invention. 10, the filter unit 110 according to the present invention is constituted by a suction body portion 110B having a hub 114 and a suction nozzle 105 which are coupled with the neck portion 20 of the syringe have. In this case, the filter unit 110 of the present invention is used to suck and fill the injection liquid into the syringe body 10. The internal structure of the suction body portion 110B will be described in detail below with reference to FIG. The suction nozzle 105 is in direct contact with the liquid inside the injection liquid container or the ampule, and can be formed integrally with the suction body portion 110B. The suction nozzle 105 is preferably made of one or more mixed materials selected from the group consisting of biocompatible silicone urethane foam neutral particles, silicone, polyurethane, polyurethane sulfone, polyester and polyamide or other environmentally friendly materials .

11 is an exploded view showing the suction filter unit 110 shown in Fig. 11, when the filter unit 110 according to the present invention is coupled to the suction body portion 110B, the internal components of the filter unit, that is, the second filter 112, the first filter 111, 113) are combined. At this time, the positions of the second filter 112 and the first filter 111 are different from the injection body 110A. That is, the inside of the suction body portion 110B is joined in the order of the second filter 112, the first filter 111, the fixed ring 113, and the hub 114 in this order. The second filter 112 preferably filters at least 5 microns of impurities and the first filter 111 preferably filters less than 5 microns of impurities.

Fig. 12 shows another embodiment of the invention shown in Figs. 10 and 11, which has a groove 106 in a portion of the outer peripheral surface of the suction nozzle 105 adjacent to the suction body portion 110B. The groove 106 can be removed from the suction body portion 110B by holding the suction nozzle 105 and the suction body portion 110B with both hands and breaking the suction nozzle 105.

This allows the suction nozzle 105 to be converted into the injection body 110A in the event of an emergency, thereby providing a filter member having ease of use and versatility.

13 is a view showing a suction tube 110B having a corrugated pipe 150 according to another embodiment of the present invention. 13, the corrugated tube 150 provided in the suction body portion 110B can be bent as shown in FIG. 13, so that the medical practitioner can vertically raise the syringe 180 when the user injects the injection liquid in use, ) Without the need to shake. At this time, the corrugated tube 150 may be formed in the suction nozzle 105 for sucking the injection liquid of the injection body portion 110A.

FIGS. 14 and 15 show an example of a multi-directional stopcock 130 used in a liquid line. The multi-directional stopcock 130 shown here has three branch pipes 130A, 130B, and 130C so that the liquid from the three branch pipes 130A, 130B, and 130C flows together and flows smoothly into the liquid line together. And a connection part 150 coupled to the liquid line. Referring to FIG. 15, the connection unit 150 is detachable, and is configured to be detachable in a spiral connection manner, for example. One end of each of the three branch pipes 130A, 130B, and 130C is formed of a branch pipe connecting portion 130M formed in a helical shape for coupling filter units. Conventionally, since the filter unit is integrally mounted on the liquid line, there is a waste to replace the multi-directional stopcock 130 in order to dispose of the spent filter in general. The amount of normally available multidirectional stopcock 130 that is discarded with the filter is significant because the supply of fluid is often provided to the patient for three days and the filter life is often within 24 hours during the fluid supply. However, since the filter unit 110 according to an embodiment of the present invention can be separated from the multi-directional stopcock 130, the multi-directional stopcock 130 can be wasted.

As a result, mass production of resources and unnecessary medical waste can be suppressed, and patients can expect safe medical treatment and reduction in medical expenses.

FIG. 16 is an exploded perspective view showing a state in which the filter unit of the present invention is connected to the multi-directional stopcock 130 shown in FIGS. 14 and 15. FIG.

Referring to FIG. 16, the internal components of the filter unit according to an embodiment of the present invention are substantially the same as those described in FIG. That is, the filter unit is coupled in the order of the first filter 111, the second filter 112, the fixed ring 113, and the hub in the injection body 110A. The injection body portion 110A may be provided with a configuration of the radial filter support 110A1.

17 is a cross-sectional view showing a coupling relationship between the branch pipe of the multi-directional stopcock 130 and the filter unit according to the embodiment of the present invention, in which one end 130M of the multi-directional stopcock 130 is connected to the injection body portion 110A And the other end 110N of the main body 110A.

The insertion tube 110P inserted into the branch tube connection part 130M of the branch tube 130 is inserted first and then the one end 110N of the injection body part 110A and the branch tube connection part 130M are connected by the helical connection So that it can be firmly fixed. Also, it is preferable that the liquid line injected into the patient is connected to the end of the hub 114, which is also helically coupled with the liquid line coupling part 114M formed at the end of the hub 114. This is to ensure that the fluid supplied to the patient is protected from detachment or dropout of the fluid line as the patient moves or moves.

Fig. 18 is an exploded perspective view of the filter unit shown in Fig. 17, showing the order in which the internal components of the filter unit are combined.

19 and 20 are views showing an embodiment in which the main use filter unit 110 according to the present invention is used in combination with the outlet portion and the injection portion of the multi-directional stopcock 130, respectively.

Referring to FIG. 19, the filter unit 110 of the present invention is configured to filter an injection liquid that is coupled to one of the injection ports of the multi-direction stopcock 130 to be introduced into the multi-direction stopcock 130. 20, the injection fluid or the fluid that has passed through each branch pipe passes through the filter unit 110 of the present invention and is ultimately passed through a long induction pipe (not shown) and an injection needle (not shown) Lt; / RTI >

The present invention described above is an invention that not only provides a safe treatment and medical cost to a patient, provides a medical device which is convenient for a medical practitioner, safe and versatile, and inhibits mass production of unnecessary medical waste.

110: filter unit 110A: injection body
110A1: Radial filter support part 110B: Suction body part
110C: hollow circular opening 111: first filter
112: second filter 113: retaining ring
114: hub 115: projection
130: multi-directional stopcock 140: syringe body

Claims (13)

A hollow injection body 110A in which a first filter 111 and a second filter 112 having different sizes of at least the voids are mounted and a hollow hollow body 110A forcibly coupled to one side of the injection body 110A, A hub 114,
Wherein the injection body part (110A) is formed with a radial filter support part (110A1) in which each support part extends radially with respect to the center.
The method according to claim 1,
And a fluid hole (110A2) for fluid flow is formed at the center of the radial filter support part (110A1).
The method according to claim 1,
Characterized in that the inner portion of the injection body portion (110A) has a portion formed stepwise inward, and the radial filter support portion (110A1) is integrally formed or detachably mounted on the portion. unit.
The method according to claim 1,
The hub 114 is forcibly coupled to the inner circumferential surface of the injection body 110A and includes a radial filter support 110A1 mounted on the injection body 110A and a hub 111 coupled to the injection body 110A. Wherein the first filter (111) and the second filter (112) are pressed and fixed by a coupling surface of the first filter (111) and the second filter (114).
5. The method of claim 4,
Wherein a fixing ring (113) is inserted between the coupling surface of the filter (111 or 112) and the hub (114). A hollow suction body portion 110B having a first filter 111 and a second filter 112 mounted thereon and having at least air gaps different from each other and a hollow hollow portion 110B forcibly coupled to one side of the suction body portion 110B, A hub 114,
Characterized in that the suction body portion (110B) is formed with a radial filter support portion (110A1) in which each support piece extends radially with respect to the center.
The method according to claim 6,
Wherein a suction nozzle (105) for sucking an injection liquid is integrally formed at an end of the suction body part (110B), and a groove (106) is formed at an outer periphery of the extension part.
8. The method of claim 7,
The suction nozzle 105 is made of one or more mixed materials selected from the group consisting of a biocompatible silicone urethane hollow neutral material, silicone, polyurethane, polyurethane sulfone, polyester, and polyamide Medical Primary Filter Unit.
7. The method according to claim 1 or 6,
Wherein the first filter 111 has a pore size of less than 5 microns and the second filter 112 has a pore size of 5 microns or more and the first filter 111 is in direct contact with the radial filter support 110A1 Wherein the filter unit is disposed so as to surround the filter unit.
7. The method according to claim 1 or 6,
And a plurality of protrusions (115) are formed in the periphery of the hub (114) in the longitudinal direction.
The method according to claim 6,
Characterized in that a corrugated tube (150) is formed in the suction nozzle (105) for sucking the liquid. An insertion pipe 110P is inserted in the front of the branch pipe 130M of the branch pipe 130A, 130B and 130C of the multi-directional stopcock 130 so as to be inserted into the branch pipe connector 130M. The one end 110N of the injection body 110A, And a radial filter support portion 110A1 radially extending from the center of the injection body portion 110A is formed in the injection body portion 110A so that the first filter 111 and the second filter 112, A fixing ring 113 is fixed in order and a liquid line clamping part 114M is formed so as to be able to be fastened to the injection liquid or the liquid line and a hub 114 formed to be spirally coupled with the injection liquid or the liquid line is inserted into the injection body 110A Wherein the filter unit is formed integrally with the filter unit. 13. The method according to any one of claims 1 to 12,
The first filter 111 and the second filter 112 are connected to the injector body 110A and the branch connector 130M of the multi-directional stopcock 130 according to the injecting direction of the injection fluid or liquid, The first filter 111 and the second filter 112 are assembled in this order from the coupling surface of the radial filter support 110A and the branch connecting portion 130M of the suction body 110B and the multi- Is assembled in the order of the second filter (112) and the first filter (111) from the coupling surface of the radial filter support part (110A1).

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