KR20170001428A - Fiter device for syringe - Google Patents

Abstract

The present invention relates to a filter device for a syringe. The filter device for a syringe according to an embodiment of the present invention filters a medicinal fluid of a syringe including a cylinder and a needle for suctioning and discharging a medicinal fluid, and comprises: a body unit installed between the needle and the cylinder; a filter support unit disposed in the body unit, having longitudinally opened inside, divided into four sections, performing suctioning through a pair of neighboring sections, and performing discharge through a pair of the other connected sections, wherein the sections for performing suctioning and discharge are moved from one section to another section to perform suctioning and discharge; a suctioning unit for suctioning a medicinal fluid to the cylinder by filtering the same after reducing pressure by elasticity and moving the same to another connected section, wherein the medicinal fluid is suctioned through the needle in one section for suctioning the medicinal fluid from the sections for performing suctioning of the filter support unit; and a discharge unit for discharging the medicinal fluid by filtering the same after reducing pressure by elasticity and moving the same to another connected section, wherein the medicinal fluid is discharged through the cylinder from one section for discharging the medicinal fluid from the sections for performing discharge of the filter support unit.

Description

{FITER DEVICE FOR SYRINGE}

The present invention relates to a filter device for a syringe, and more particularly, to a filter device provided between a needle and a cylinder of a syringe, which improves the structure of filtration during chemical solution filling and drug solution injection, And to prevent the impurities from being administered to a patient upon filtration and double filtration during administration.

Generally, a syringe is a device for injecting a drug solution into a desired tissue or blood vessel through a skin while filling the drug solution into an animal or a person for the purpose of various tests or treatment.

The syringe has a cylinder to be filled with a cylinder in the form of a cylinder having a piston so as to have a pressure for filling and administering a chemical solution. A needle is installed at one side of the cylinder so as to penetrate the skin with a sharp end in the form of a thin tube.

When the syringe is inserted into the ampoule storing the drug and the needle of the syringe is inserted and the piston is sucked in, the drug solution is filled into the syringe cylinder inside the ampoule. After the filling, the needle is pushed into the injected blood vessel or tissue while the syringe is moved to the injector, and then the piston is operated to inject the chemical solution.

The ampoule containing the above-mentioned chemical liquid is a small glass container used for drinks and the like, and neutral borosilicate glass is mainly used. Ampoules are colorless transparent and brown with iron oxide to reduce the effects of light. Since the ampoule is filled with the liquid and then the upper glass is melted and sealed, the charged liquid does not come into contact with anything other than the glass, and it is widely used because it is hygienic and suitable for heat sterilization.

Such a glass-made injection ampoule is used for injecting a chemical solution by inserting a nipple of a syringe into an ampule, filling a chemical solution with a part of the glass ampule being opened by wiping the cut portion of the glass ampule by a user by pressing the one side where the chemical solution is stored.

Here, the glass ampoule of the glass material breaks the cut portion during opening, and impurities such as fragments of glass fragments or glass powder flow into the inside of the liquid medicine, and when the liquid is injected and when impurities remain, .

When injected into the human body through intravenous injection in the state where the glass powder is mixed with the drug solution in the syringe, there is an increased risk of causing pathological changes such as inflammation reaction and granuloma formation in the lung, liver, spleen and other organs. There are a lot of ways to remove this.

In recent years, a filter syringe has been developed and used in which a filter is provided at a joint portion between a needle and a cylinder of a syringe to filter impurities.

The filter syringe of the prior art is sucked through the needle for filling, and as the chemical solution discharged for administration passes through one filter, the impurities remaining in the filter at the time of suction are discharged together with the discharge, Can be reduced.

Further, in the filter syringe of the related art, the filter installed on the needle is directly connected between the needle and the cylinder, and the pressure of sucking and discharging the sucking and discharging liquid as the pressure of sucking and discharging the sucking liquid is directly transferred to the filter by the operation of the piston, The filtration efficiency is drastically lowered, so that a chemical solution in which the impurities are not removed can be administered.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems described above, and it is an object of the present invention to provide a syringe filter, which is disposed between a needle and a cylinder, The present invention also provides a filter device for a syringe, which prevents impurities from being infused during filling and prevents impurities from being administered to a patient by filtration and double filtration.

The technical problem of the present invention is not limited to those mentioned above, and another technical problem which is not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a filter device for filtering a chemical solution of a needle and a syringe provided with a cylinder through which a chemical liquid is sucked and discharged, An installed body portion,

And is disposed in the inside of the body part and is vertically opened to be sucked into a pair of adjacent ones communicated in the divided areas divided into four areas and discharged to the other pair of the communicated areas, And a pair of exhausted areas are moved from one area to another area to be sucked and discharged. In one zone where the chemical solution is sucked into a pair of sucked areas of the filter support part, the chemical solution sucked through the needles Wherein the filter is provided with a suction portion to be sucked into the cylinder by performing filtering after the pressure is reduced by the elasticity and moved to another communicated region, The chemical liquid discharged through the cylinder lowers the pressure by elasticity, And a discharging portion which is discharged to the needle by performing filtering after moving in the reverse direction.

The body portion is disposed between the needle and the cylinder, and a position where one side of the needle is sucked and discharged into the cylinder is inserted and supported, and the filter support portion is provided therein. When the chemical solution is sucked and discharged And a needle space protruding from the other side of the body for communicating with the needles and having a needle space communicated with the needle space and having one side communicated with the needle space, .

The filter support portion may include a support body disposed inside the body portion and configured to allow a chemical solution to be sucked and discharged between the needle and the cylinder to pass therethrough and a support body disposed inside the support body, A plurality of suction holes communicating with each other are formed in a side wall defining a pair of adjacent suctioned zones, and a plurality of suction holes are formed in the other of the suctioned holes, The partition wall may include a partition wall having a plurality of vent holes communicating with each other.

In addition, one of the pair of the inhaled regions may be formed as a suction region in which the chemical liquid is sucked from the needle, and the other region may be formed as a suction communicating region communicated with the suction hole and sucked into the cylinder after filtration And one of a pair of the discharged regions may be formed as a discharge region through which the chemical liquid is discharged from the cylinder and another region may be formed as an discharge communicating region communicated with the discharge hole and discharged to the needle after filtration have.

In addition, the suction portion is disposed inside the filter support portion, and is opened only in the other direction in which one region sucking the chemical liquid is sucked out from the needle in a pair of sucked regions in the region divided into four regions And a suction wrinkle member which is disposed on the other side of the suction body and is disposed inside the filter support unit and is provided to reduce the pressure of the chemical liquid sucked by the elasticity of the suction body, have.

In addition, it is also possible to provide a chemical solution which is disposed inside the filter support part and is located in another zone communicating with a pair of the suctioned areas of the four divided zones, and passes through the inhalation member elastically supported by the suction wrinkle member And may further comprise a suction filter body installed to filter.

The discharge portion is disposed inside the filter support portion, and is opened only in one direction in which one region for discharging the chemical solution from the cylinder is discharged out of the pair of discharge regions in the region divided into four regions And a discharge wrinkle member disposed at one side of the discharge member and disposed inside the filter support member to reduce the pressure of the discharged chemical liquid as the discharge member is given elasticity have.

And a filter unit disposed in the filter support unit and located in another zone communicating with a pair of the exhausted zones of the four divided zones to allow the chemical solution passing through the exhausted unit elastically supported by the exhausted wrinkle member And may further comprise an exhaust filter body installed to filter.

In addition, the filter support portion is disposed on the outer surface in the cylinder direction of the filter support portion, and is arranged in the outer surface of the cylinder in one of the pair of the exhausted zones in the four divided zones, And a discharge filter body installed to be flowed into the discharge body in a state in which the chemical liquid is discharged.

The details of other embodiments are included in the detailed description and drawings.

According to the filter device for a syringe according to an embodiment of the present invention, the filter installed between the needles of the syringe and the cylinder of the syringe is indirectly filtered during the filling of the chemical solution and during the administration of the chemical solution. It is possible to prevent the impurities from being introduced into the patient when the impurities are injected by dividing the space so that the impurities can be filtered by double filtration.

Further, in the filter device for a syringe according to the present invention, the suction part at the time of filling and the discharge part to be discharged at the time of administration are divided into four parts and a body is provided in a space form. In the divided part of the suction part and the discharge part, The filtration efficiency can be improved as the suction and discharge pressure is reduced while the suction and discharge are performed while being moved to another space.

The filter device for a syringe according to the present invention is characterized in that each of the divided suction part and the discharge part is provided with means for suction and discharge by being moved by elasticity and is opened in the direction of sucking and discharging the other space, Since the space and the other space are provided so as to be connected to the plurality of through holes on the side, the filtration efficiency can be improved by primarily filtering while being moved through the through holes while the pressure is reduced by the elastic force.

In addition, the filter device for a syringe according to the present invention is characterized in that a filter body is installed in a space connected to the cylinder at the time of suction and a space connected to the needle at the time of discharging among the divided spaces of the suction portion and the discharge portion, The filtration efficiency is improved to prevent the impurities from being introduced and to prevent the impurities from being discharged to the outside even when the impurities are introduced.

In addition, the filter device for a syringe of the present invention has a suction portion and a discharge portion inside a quadrant body, and the means for suction and discharge by being moved by elasticity during suction and discharge comprises a folding member having elasticity, Since the car body for discharging is provided in the same material as the body and can be sucked and discharged while being decompressed without contamination of the chemical liquid, hygiene efficiency can be improved.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is an exploded perspective view showing a syringe in which a syringe filter device according to an embodiment of the present invention is installed.
Fig. 2 is an exploded perspective view showing the syringe filter device of Fig. 1;
Fig. 3 is an exploded perspective view showing a main part of the filter support unit, the suction unit, and the discharge unit in the syringe filter device of Fig. 1; Fig.
4 is a cross-sectional view of the filter unit for the syringe of FIG.
FIG. 5 is a cross-sectional view of the filter unit for the syringe of FIG.
FIG. 6 is a sectional view of the filter device for a syringe of FIG. 1 as viewed in the direction of a suction portion as a main portion.
Fig. 7 is a state diagram showing a state in which a suction part, which is a main part, is operated in the syringe filter device of Fig. 6; Fig.
8 is a cross-sectional view of the filter device for a syringe of Fig.
Fig. 9 is a use state diagram showing a state in which a discharge part, which is a main part, is operated in the syringe filter device of Fig. 8; Fig.
Fig. 10 is a state of use showing an activated state according to another embodiment of the discharge portion which is a main part of the filter device for a syringe of Fig. 1; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

In the following description of the embodiments of the present invention, descriptions of techniques which are well known in the technical field of the present invention and are not directly related to the present invention will be omitted. This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated. Also, the size of each component does not entirely reflect the actual size. In the drawings, the same or corresponding components are denoted by the same reference numerals.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings for explaining a syringe filter device according to embodiments of the present invention.

1 is an exploded perspective view showing a syringe in which a syringe filter device according to an embodiment of the present invention is installed, Fig. 2 is an exploded perspective view showing the syringe filter device of Fig. 1, Fig. 4 is an exploded perspective view showing a filter support portion, a suction portion, and a discharge portion which are main parts of the device, Fig. 4 is a cross-sectional view of a suction portion and a filter portion as main portions of the filter device for a syringe of Fig. FIG. 6 is a cross-sectional view of the filter device for a syringe in a direction showing a suction part as a main part, and FIG. 7 is a cross-sectional view of the syringe filter device of FIG. Fig. 8 is a view showing a state in which a suction part, which is a main part, is operated in the filter device for a syringe, Rabon cross-sectional view, and Figure 9 is a using state diagram showing the state in which the discharge operation portion main parts to the filter unit for the injector of Fig.

1 to 9, the filter device 100 for a syringe according to an embodiment of the present invention includes a syringe 10 for sucking and discharging a chemical liquid, To remove impurities in the chemical liquid.

The syringe 10 is provided with a needle 11 through which a chemical liquid is sucked and discharged and a piston 13 which provides a pressure at which a chemical liquid is sucked and discharged for administration in an object in which a chemical liquid is used in a state where the chemical liquid is filled , And a cylinder (12) equipped to fill the chemical liquid by operation by inhalation and administer by discharge. In order to transfer the drug solution filled in the syringe 10 into the ampoule made of glass, the ampoule of the glass material is cut and opened after the ampoule of the glass is inserted, and then the needle 11 is inserted. Is sucked into the cylinder (12) by the operation of the cylinder (13) and is filled.

At this time, when the glass is broken when the ampoule is opened, glass powder or debris is inserted into the chemical solution to mix the impurities. When the ampoule is filled with the syringe, the glass powder flows into the chemical solution together with the impurities. .

Therefore, a filter device 100 is installed and used to filter the glass powder or debris at a position where the syringe 10 is sucked to be filled with the chemical liquid and discharged to be injected.

The syringe filter device 100 includes a body 110 disposed between the needle 11 and the cylinder 12, a filter support 120, a suction unit 130, and a discharge unit 140. The body 110 includes a body 111, one side of which is inserted and supported so as to communicate with the cylinder 12, and a needle insertion body 113.

The body 111 is disposed between the needle 11 and the cylinder 12 so that one side of the cylinder 11 is inserted into and supported by the cylinder 12 at a position where the chemical liquid is sucked and discharged. A filter supporting part 120 is provided in the body 111 to form a body space 112 through which the chemical liquid flows when sucked and discharged. The body space 112 is formed in the body 111 such that a filter support 120 is provided to filter the chemical solution while being sucked and discharged while the chemical solution flows in a space form communicating with the cylinder 12.

The needle insertion body 113 is protruded from the other side of the body 111 and protrudes so as to insert the needle 11 so that the other side thereof communicates with the needle 11 and the other side thereof communicates with the body space 112 And has a space 114.

The filter support 120 includes a support body 121 installed inside the body 110 to support filtering, and a separation barrier 122. The support body 121 is disposed inside the body 111 and is installed to allow the chemical liquid to be sucked and discharged between the needle 11 and the cylinder 12 to pass therethrough. The support body 121 is installed inside the body 111 to partition the partition wall 122 to separate the suction and discharge areas.

The partition wall 122 is disposed inside the support body 121 and is provided in the form of a partition that is divided into four sections in a shape intersecting the inside of the support body 121. And a pair of the four divided areas are formed as a suction area in which the suction unit 130 is installed.

The suction area 123 is formed as one area in which the chemical liquid is sucked in the needle 11 among the pair of sucked areas and the suction area 123 is formed in the separating partition wall 122 divided into the other area among the pair of areas. A suction communicating region 124 is provided in which a plurality of suction holes 125 are provided to filter the chemical liquid sucked into the suction region 123 through the suction hole 125 and moved to the cylinder 12.

In addition, among the four separated areas, the remaining area excluding the suction area 123 and the suction communication area 124 is formed as a discharge area in which the discharge part 140 is installed.

In one of the pair of the discharged regions, the one region in which the chemical liquid is discharged from the cylinder 12 is formed as the discharge region 126, and the discharge region 126 is formed in the partitioning wall 122, A discharge communicating region 127 is formed which has a plurality of discharge holes 128 so as to filter the chemical liquid discharged into the discharge region 126 while being moved to the needle 11 through the discharge hole 128.

That is, the suction area includes a plurality of suction holes 125 communicating with the side walls of the partition wall 122 dividing the pair into a pair of zones in which the suction unit 130 is installed, out of the four zones divided by the separation barrier ribs . The pair of compartments includes a suction region 123 sucked in by the needle 11 and a suction communicating region 124 communicating with the suction hole 125 so that the chemical liquid passing through the suction region 123 is moved to the cylinder 12 .

In addition, the discharged region has a plurality of discharge holes (not shown) communicating with the side walls of the partition wall 122 dividing the pair into a pair of zones in which the discharge unit 140 is installed, out of the four zones divided by the partition wall 122 128 are formed. The pair of compartments includes a discharge region 126 discharged from the cylinder 12 and a discharge communicating region 127 communicating with the discharge through hole 128 and having the chemical solution passed through the discharge region 126 to the needle 11 .

The suction portion 130 includes a suction body 131, a suction breech member 132, and a suction filter body 133, which are provided in the suction region 123 and control the flow of the chemical liquid. The suction body 131 is provided at the other side of the suction area 123 which is divided into the separation wall 122 and is opened in the other direction and is closed in the one direction to the suction area 123, So as to block the backflow of the chemical liquid sucked in.

The suction bellows member 132 is disposed on the other side of the suction body 131 and is disposed inside the suction area 123 to apply pressure to the suctioned body 131 do. The suction bellows member 132 is provided in the form of a wrinkle in order to impart elasticity to the suction body 131 by the same material as the support body 121 and the suction body 131 sucked by the pressure of the piston 13 is elastically supported The suction pressure of the piston 13 for opening the suction body 131 is lowered. The chemical liquid whose suction pressure is lowered by the elastic force of the suction wrinkle member 132 is reduced in flow rate and can be improved in efficiency of being filtered through the suction filter body 133 installed in the suction communicating region 124 through the suction hole 125 .

The suction filter body 133 is disposed inside the support body 121 and filters the chemical liquid that has passed through the suction body 131 which is located in the suction communicating region 124 and is elastically supported by the suction bellows member 132 Respectively. The suction filter body 133 is sucked into the suction communication area 124 through the suction suction hole 125 which communicates when the chemical liquid that has passed through the suction body 131 flows into the suction area 123, And then moved to the cylinder 12. [

That is, the sucked chemical liquid is sucked into the suction body 131 elastically supported by the suction bellows member 132, so that the suction pressure is reduced and the flow rate is reduced, By filtering, the impurity removal efficiency can be improved.

When the chemical liquid that has passed through the inhalation body 131 flows into the inhalation region 123, the inhaled chemical liquid is primarily filtered while passing through the plurality of communication through-holes 125, and the primary- The filtration efficiency can be improved by being secondarily filtered through the suction filter body 133 installed in the region 124 and supplied to the cylinder 12. [

As described above, in order to fill the chemical solution in the scanning ampule, the suction is performed while reducing the pressure in the suction member 131 elastically supported by the suction wrinkle member 132 provided in the suction area 123 at the time of suction, And enters the suction communicating region 124 through the suction through hole 125. The chemical liquid flowing into the suction communicating region 124 is supplied to the cylinder 12 after being filtered by the suction filter body 133 installed in the suction communicating region 124. Therefore, the chemical solution into which the impurities are mixed can be removed while passing through the suction hole 125 and the suction filter member 133 in a slowed state, thereby improving the filtering efficiency.

The discharge portion 140 includes a discharge member 141, an discharge wrinkle member 142, and a discharge filter member 143 installed in the discharge region 126 for controlling the flow of the chemical liquid. The discharge body 141 is opened in one direction and closed in the other direction so as to be opened and closed at one side of the discharge region 126 divided by the partition wall 122 in the interior of the support body 121, So as to block the backflow of the chemical liquid.

The discharge wrinkle member 142 is disposed on the other side of the discharge member 141 and is located inside the discharge region 126 to provide pressure to the discharge member 141 to reduce the pressure of the discharged chemical liquid do. The discharge wrinkle member 142 is provided in the form of a wrinkle in order to impart elasticity to the discharge body 141 by the same material as the support body 121 and the discharge body 141 discharged by the pressure of the piston 13 is elastically supported The discharge pressure of the piston 13 for opening the discharge member 141 is lowered. The chemical liquid whose discharge pressure is lowered by the elastic force of the discharge wrinkle member 142 is reduced in flow rate and can be improved in efficiency of being filtered by the discharge filter member 143 installed in the discharge communication area 127 through the discharge hole 128 .

The discharge filter body 143 is disposed inside the support body 121 and is provided at a position communicated with the discharge through hole 126 of the discharge communicating area 127 to discharge the discharge body 143 elastically supported by the discharge wrinkle member 142 (Not shown). The discharge filter body 143 is introduced and filtered through the discharge vent hole 128 which communicates when the chemical liquid that has passed through the discharge body 141 flows into the discharge region 126. The chemical liquid that has passed through the discharge filter body 143 can be moved to the needle through the discharge communicating area 127.

That is, as the discharged chemical liquid is discharged to the discharge member 141 elastically supported by the discharge wrinkle member 142, the discharged discharge pressure is reduced, By filtering, the impurity removal efficiency can be improved.

When the chemical liquid that has passed through the discharge member 141 flows into the discharge region 126, the discharged chemical liquid is primarily filtered while passing through the plurality of discharge through holes 128 that are communicated with each other, The filtering efficiency can be improved by being secondarily filtered through the discharge filter member 143 installed in the region 127 and supplied to the needle 11.

As described above, in order to administer the chemical liquid filled in the cylinder 12, the pressure is reduced in the discharge member 141 elastically supported by the discharge wrinkle member 142 provided in the discharge region 126 at the time of discharge, The discharged chemical liquid flows into the discharge filter body 143 provided in the discharge communicating area 127 through the discharge vent hole 128 to perform filtering and then passes through the remaining area to the discharge communicating area 127 after being filtered, 11). Therefore, the filled chemical liquid can be removed while passing through the discharge through hole 128 and the discharge filter body 143 in a slowed state, thereby improving the filtering efficiency.

The discharge filter body 143 is provided at a position where the discharge vent hole 128 of the discharge communicating area 127 is formed and the discharge communicating area 127 is formed in a space shape in the discharge direction, Even if the chemical liquid contaminated with impurities is injected into the discharge communicating region 127 opened to the position, the chemical liquid is located in the space. When the chemical liquid is partially ejected by the operation of the piston 13, the chemical liquid is ejected to the outside, The removal efficiency can be improved.

Fig. 10 is a state of use showing an activated state according to another embodiment of the discharge portion which is a main part of the filter device for a syringe of Fig. 1; Fig.

Referring to FIG. 10, another embodiment of the discharge unit 140, which is a major part of the syringe filter device 100 according to an embodiment of the present invention, 100 and the discharge unit 140 are different from each other.

The discharge part 140 includes a discharge area 126 partitioned by the partition wall 122 of the filter support part 120 and an discharge communication area 127 communicated with the discharge hole 128, do.

The discharge filter body 143 is disposed on the outer surface in the cylinder direction of the filter support portion 120. The discharge body 141 of the discharge region 126 and the discharge wrinkle member 142 are provided, And is disposed on the outer side communicated with the injector so as to be introduced into the discharge body 141 in a state where the discharged chemical liquid is filtered.

The discharge filter body 143 is installed at a position where the chemical liquid flows in the discharge region 126 communicating with the cylinder 12 and is arranged to discharge the discharged chemical liquid in a filtered state, The chemical liquid flowing into the region 126 is discharged to the discharge communicating region 127 in the form of a space through the discharge vent hole 128. The chemical liquid discharged to the discharge communicating region 127 can be discharged to the outside through the communicating needle 11. [ That is, the discharge filter body 143 is disposed outside the discharge area 126 of the filter support part 120 so that the chemical solution sucked into the cylinder 12 is filtered before flowing into the discharge area 126 provided with the discharge body 141 Lt; / RTI >

The discharge communicating region 127 is provided in a space shape so that even when the chemical liquid containing the impurities flows into the discharge communicating region 127 when the small amount of chemical liquid is discharged to the outside, So that filtration is performed in a state where the impurities are removed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And is not intended to limit the scope of the invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

Description of the Related Art
100: Filter device 110: Body part
111: body 112: body space
113: Needle insertion body 114: Needle space
120: filter support part 121: support body
122: separating partition wall 123: suction region
124: suction communicating area 125: suction hole
126: Discharge area 127: Discharge communication area
128: exhaust vent 130:
131: suction body 132: suction breech member
133: Suction filter body 140:
141: discharge member 142: discharge wrinkle member
143: exhaust filter body

Claims (9)

1. A filter device for filtering a chemical solution of a needle and a syringe provided with a cylinder in which a chemical liquid is sucked and discharged,
A body provided between the needle and the cylinder,
And is disposed in the inside of the body part and is vertically opened to be sucked into a pair of adjacent ones communicated in the divided areas divided into four areas and discharged to the other pair of the communicated areas, And a pair of exhausted portions are moved from one region to another,
The chemical solution sucked through the needles in one zone where the chemical solution is sucked into the pair of suctioned portions of the filter support portion is reduced in pressure by elasticity and moved to another communicated region, , And
The chemical solution discharged through the cylinder in one region where the chemical solution is discharged out of the pair of the exhaust portions of the filter support portion is reduced in pressure by elasticity and moved to another communicated region and then subjected to filtration, Including a discharge portion
Filter device for syringe.
The method according to claim 1,
The body portion
And a body space in which a position where the chemical liquid is sucked and discharged is inserted and supported at one side of the cylinder and the filter support portion is installed therein and the chemical liquid is circulated at the time of sucking and discharging Body, and
And a needle insert protruding from the other side of the body and protruding to insert the needle and having a needle space in which the other side communicates with the needle and one side communicates with the body space
Filter device for syringe.
The method according to claim 1,
The filter support portion
A support body disposed inside the body portion and configured to allow the chemical liquid to be sucked and discharged between the needle and the cylinder to pass therethrough,
The support body is provided in the form of a partition wall divided into four sections in a shape intersecting with the inside of the support body. The side walls partitioning the adjacent pair of the suction areas are provided with a plurality of And a partition wall having a plurality of discharge holes communicated with each other is formed in a side wall defining a suction hole and partitioning the other discharge area
Filter device for syringe.
The method of claim 3,
One of a pair of the inhaled regions is formed as a suction region in which the chemical liquid is sucked from the needle and another region is formed as a suction communicating region communicated with the suction hole and sucked into the cylinder after filtration,
One of a pair of the discharged regions is formed as a discharge region from which the chemical liquid is discharged from the cylinder and another region is formed as an discharge communicating region communicated with the discharge hole and discharged to the needle after filtration
Filter device for syringe.
The method according to claim 1,
The suction unit
A suction unit disposed inside the filter support unit and configured to be opened only in the other direction in which one area in which the chemical solution is sucked in the needle is sucked out of the pair of suction areas in the area divided into four zones,
And a suction wrinkle member which is disposed on the other side of the suction member and is disposed inside the filter support member to reduce the pressure of the chemical liquid sucked by imparting elasticity to the suction member
Filter device for syringe.
6. The method of claim 5,
And a filter disposed in the filter support portion and located in another region communicating with a pair of the suctioned regions of the four divided regions to filter the chemical liquid that has passed through the suctioned body elastically supported by the suction wrinkled member Further comprising an installed suction filter body
Filter device for syringe.
The method according to claim 1,
The discharge portion
A discharge member disposed inside the filter support unit and configured to be opened only in one direction to discharge a region for discharging the chemical solution from the cylinder among a pair of discharge regions of the region divided into four regions,
And a discharge wrinkle member which is disposed at one side of the discharge member and installed inside the filter support member to reduce the pressure of the discharged chemical liquid as elasticity of the discharge member is given
Filter device for syringe.
8. The method of claim 7,
And a filter disposed in the filter support and located in another zone communicating with the one of the four zones and communicating with the other of the four zones so as to filter the chemical liquid that has passed through the discharge unit elastically supported by the discharge wrinkle member Further comprising an installed exhaust filter body
Filter device for syringe.
8. The method of claim 7,
The filter support portion is disposed on the outer surface of the filter support portion in the cylinder direction and is disposed on the outer surface in the cylinder direction from one of a pair of the exhausted zones in the four divided zones to one compartment from which the chemical solution is discharged, Further comprising a discharge filter body installed to be flowed into the discharge body in a state in which the chemical liquid is filtered
Filter device for syringe.

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