WO2012138177A2 - 필터 니들. - Google Patents
필터 니들. Download PDFInfo
- Publication number
- WO2012138177A2 WO2012138177A2 PCT/KR2012/002632 KR2012002632W WO2012138177A2 WO 2012138177 A2 WO2012138177 A2 WO 2012138177A2 KR 2012002632 W KR2012002632 W KR 2012002632W WO 2012138177 A2 WO2012138177 A2 WO 2012138177A2
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- WO
- WIPO (PCT)
- Prior art keywords
- filter
- needle
- passage
- outlet
- filter structure
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3145—Filters incorporated in syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/329—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles characterised by features of the needle shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/75—General characteristics of the apparatus with filters
- A61M2205/7545—General characteristics of the apparatus with filters for solid matter, e.g. microaggregates
Definitions
- the present invention relates to a filter needle for medical use, and in particular, to be used by being detached from a syringe consisting of a cylinder and a piston, and when injecting a chemical solution of an ampoule made of glass or plastic into a cylinder of a syringe and injecting the patient through a needle. It is to prevent the injection of fine powder generated in the ampoule made of glass or plastic to the patient.
- a syringe In general, a syringe consists of a syringe body and a needle that is detached in front of it, which is used when a patient directly injects a medicinal solution to a patient, and most of these patients are the smallest microorganisms that infect various types of viruses that live on parasitic cells. Disposable syringes are mandatory to prevent the development of secondary infection during injection because they are contaminated patients or patients who are contaminated with microorganisms, especially microscopic single-cell organisms, which are harmful to humans. .
- these disposable syringes are mostly liquid, except for solids requiring distilled water for dissolution of solid injections or dilution of water-soluble injectables. They are contained in ampoules made of glass or plastic and require long-term storage. They are in the form of solids that are dissolved and used during use, and they are also stored in ampoules and used with distilled water for injection.
- the filter 300 is installed in the fixing member 220 is fixed to the needle 210 so that the needle 200 is detached to the front of the syringe. Therefore, it is proposed to filter foreign substances such as glass powder or plastic powder and other impurities generated when the ampoule is opened when the drug is sucked into the syringe body through the needle.
- the needle must be replaced. Otherwise, the foreign matter attached to the filter is injected into the patient through the needle again.
- the suction fluid is sucked into the syringe main body 100 composed of the cylinder 110 and the piston 120 through the needle, and the filter 300 is equipped with an injection needle 200 mounted thereon.
- the injection needle 200 will be replaced after the replacement.
- the medical waste for injection is to be separated from the general medical waste to be treated so that there is a problem that the treatment cost increases accordingly.
- the present invention can filter the foreign matter without replacing the needle, while being easy to assemble and can be provided at a low cost, it is to facilitate the injection by dispersing the pressure during the injection.
- the present invention incorporates a filter structure having respective one-way flow paths having an inlet and an outlet having a check valve function in a fixing member that is fixed to the front of the syringe body while fixing the needle of the needle.
- a filter is installed at the front of the outlet so that when the inflow of the chemical solution through the inlet and at the same time to the patient is injected into the patient, the foreign material is filtered through the filter and only the chemical is injected through the outlet.
- the inlet and the outlet having the check valve function prevent the damage of the function of the check valve during suction and discharge as well as the ease of suction and ease of discharge by the structure change to complement the function of the check valve.
- the injection molding of the filter structure into one body provides ease of manufacture and precise filtering as well as uniformity of the product.
- the line for inhaling and discharging the chemical liquid is divided and there is no need to replace the needle, and only when the chemical liquid is discharged, the foreign material is filtered out by the filter so that the foreign substance may not be administered to the patient, and at the same time, the cross-sectional area of the filter is It will be easier to increase the injection.
- FIG. 1 is a perspective view of one embodiment of a hermetic filter structure of the present invention.
- Figure 2 is a cross-sectional view of the filter structure of Figure 1 mounted on a syringe.
- FIG. 3 is a state diagram in which the chemical liquid flows into the inflow passage of the filter structure of FIG.
- FIG. 4 is a state diagram in which the chemical liquid is discharged into the outflow passage of the filter structure of FIG.
- FIG. 5 is a perspective view of another embodiment of the hermetic filter structure of the present invention.
- FIG. 6 is a cross-sectional view of the filter structure of FIG. 5 mounted to a syringe
- FIG. 7 is a state diagram in which the chemical liquid flows into the inflow passage of the filter structure of FIG.
- FIG. 8 is a state diagram in which the chemical liquid is discharged into an outflow channel of the filter structure of FIG. 5;
- Figure 9 is a perspective view of a third embodiment of the hermetic filter structure of the present invention.
- FIG. 10 is a cross-sectional view of the filter structure of FIG. 9 mounted to a syringe;
- Figure 11 is a state in which the chemical liquid flows into the inflow passage of the filter structure of Figure 9;
- FIG. 12 is a state diagram in which the chemical liquid is discharged into an outflow channel of the filter structure of FIG.
- Figure 13 is a perspective view of one embodiment of a filter structure having an open inlet passage of the present invention.
- FIG. 14 is a sectional view of the filter structure of FIG. 13 mounted to a syringe
- 15 is a state diagram in which the chemical liquid flows into the inflow passage of the filter structure of FIG.
- FIG. 16 is a state diagram in which the chemical liquid is discharged into the outflow passage of the filter structure of FIG.
- FIG. 17 is an external perspective view of the filter structure of FIG. 13; FIG.
- FIG. 18 is a perspective view of a second embodiment of a filter structure having an open inlet flow path of the present invention.
- Fig. 19 is a sectional view of the filter structure of Fig. 18 mounted on a syringe;
- FIG. 20 is a state diagram in which the chemical liquid flows into the inflow passage of the filter structure of FIG.
- 21 is a state diagram in which the chemical liquid is discharged into the outflow passage of the filter structure of FIG.
- Figure 22 is a perspective view of a third embodiment of a filter structure having an open inlet flow path of the present invention.
- FIG. 23 is a sectional view of the filter structure of FIG. 22 mounted on a syringe
- FIG. 24 is a state diagram in which the chemical liquid flows into the inflow passage of the filter structure of FIG.
- FIG. 25 is a state diagram in which the chemical liquid is discharged into the outflow passage of the filter structure of FIG.
- Figure 26 is a cross-sectional view of the filter assembly of Figure 22 coupled to the inner space of the fixing member.
- FIG. 27 is a sectional view showing a guide groove formed in the inner wall of FIG.
- Figure 28 is a perspective view of a fourth embodiment of a filter structure having an open inlet flow path of the present invention.
- FIG. 29 is a sectional view of the filter structure of FIG. 28 mounted on a syringe
- FIG. 30 is a state diagram in which the chemical liquid flows into the inflow passage of the filter structure of FIG.
- FIG. 31 is a state diagram in which the chemical liquid is discharged into the outflow channel of the filter structure of FIG.
- FIG. 32 is an exploded perspective view of a conventional needle filter applied to a syringe
- Fig. 33 is a sectional view of the mounted state of Fig. 32;
- the filter structure 10 mounted in the inner space 230 of the fixing member 220 of the injection needle 200 has a respective one-way inflow having each inlet 11 and outlet 12 having a check valve function. Having a flow passage 13 and an outflow passage 14,
- the filter 20 is mounted only inside the outlet flow passage 14 at the rear end of the outlet 12 so that the foreign substance is filtered through the filter 20 when the chemical liquid introduced into the patient through the inlet 11 is injected into the patient. It is a filter needle, characterized in that only the chemical liquid to be injected through the outlet (12).
- FIGS. 2, 6, 10, 14, 19, 23, 29 3 is a cross-sectional view of the filter needle mounted on the syringe
- Figures 3, 7, 11, 15, 20, 24, 30 is a state diagram in which the chemical liquid is sucked through the filter needle
- Figures 4, 8, 12, 16, 21, 25 , 31 shows a state diagram in which the chemical liquid is discharged through the filter needle.
- the structure of the syringe which is generally used is the syringe body 100 and the front end portion 130 is formed to protrude forward so that the needle 200 is detached to the front of the cylinder 110, the piston 120 is in and out of the It consists of a needle 200 detachably mounted to the front end portion 130 of the syringe body 100, the needle 200 is a needle 210 and the needle 210, which is usually made of a metal material integrally It is made of a fixing member 220 having an inner space 230 that is fixed (usually insert injection for tight fixing) detachably mounted to the front end 130 of the syringe body 100.
- the filter structure 10 of the present invention applied to such a syringe is mounted in the inner space 230 of the fixing member 220 for fixing the needle 210 of the needle 200, the rear end of the syringe Even when the front end 130 of the main body 100 is mounted to suck the chemical liquid, the filter structure 10 will not be randomly released from the inner space 230 of the fixing member 220.
- the filter needle described in the present invention refers to a state in which the filter structure 10 mounted in the inner space 230 of the fixing member 220 of the needle 200 is coupled to prevent an arbitrary dropout.
- the filter structure 10 of the present invention is provided with an inlet passage 13 and an outlet passage 14 of each independent sealed type to the inner wall 230 in the inner space 230 of the fixing member 220 of the conventional needle 200
- the inner space 230 of the fixing member 220 is formed while being mounted in close contact with the 230a or having the filter structure 10 having the open inflow passage 13a and the closed outflow passage 14.
- the filter structure 10 may be simplified by forming a sealed inflow passage in a state in which the guide groove 230b formed on the inner wall 230a is in close contact.
- the filter structure 10 in the present invention is molded in one piece using medical silicone which is harmless to the human body and is excellent in heat resistance and elasticity as well as wear resistance.
- the filter structure 10 mounted on the conventional needle 200 has an inlet 11 and outlet 12 having a check valve function, each one-way flow path, that is, the inflow flow path having a constant depth behind (13) and the outflow passage 14, the chemical liquid introduced into the rear end of the outlet 12, that is, the inside of the outflow passage 14 only in the inside of the outflow passage 14 and the foreign matter and the like at the same time through the inlet (11)
- the filter structure 10 mounted on the conventional needle 200 has an inlet 11 and outlet 12 having a check valve function, each one-way flow path, that is, the inflow flow path having a constant depth behind (13) and the outflow passage 14, the chemical liquid introduced into the rear end of the outlet 12, that is, the inside of the outflow passage 14 only in the inside of the outflow passage 14 and the foreign matter and the like at the same time through the inlet (11)
- foreign substances are filtered out of the filter 20 so that only the chemical solution is injected through the outlet 12.
- the simplified filter structure 10 has a closed type flow passage 14 in the center, and forms an open inflow passage 13a having no shank function as its outer circumference and a pressure at the rear end of the open inflow passage 13a.
- the inner wall 230a which forms the inner space 230 of the fixing member 220 of the injection needle 200 using the simplified filter structure 10 described above.
- the filter structure 10 can also be manufactured in an assembly type, but in consideration of economical efficiency or completeness of the product, it is preferable that the filter structure 10 is manufactured in one piece, and the present invention is described as one piece in the present invention.
- the inflow passage of the filter structure 10 of the present invention may be a closed type 13 or an open type 13a, but the outflow channel 14 must be a closed type.
- FIGS. 13, 18, 22, and 28 show that the filter structure has a closed flow path and an inflow flow path is open.
- 13 and 18 show that the filter structure is mounted in the inner space of the fixing member of the conventional needle, so that the inflow passage becomes closed.
- FIGS. 22 and 28 simplify the filter structure and the fixing member of the existing needle.
- the inner wall forming the inner space of the guide groove is formed in the state in which the inlet flow path is formed in the closed state in the combined state of the filter structure
- Figure 8 is a closed type by combining the filter structure on the inner wall forming the inner space of the fixing member Another embodiment of the inner wall for forming the inflow passage is shown.
- the filter structure 10 has an outflow passage 14 formed at the center thereof, and an inflow passage 13 is formed at the outer circumference thereof, and the filter structure 10 shown in FIG. 13) and the outflow passage 14 are biased toward one side of each other on the same plane.
- the structure of the filter structure 10 of Figs. 1 and 5 is formed in the closed flow passage 14 in the center, the inlet flow passage 13 is formed in the outer periphery, the inflow passage 13 is the outlet flow passage 14
- the inner diameter is relatively smaller than) and the inflow passages 13 are each independently formed in a closed state, whereby a plurality of inflow passages 13 are formed.
- sucking the pressure generated during the inflow of the chemical solution becomes uniform, so that the inflow is easy and of course, it is completely sucked without the remaining amount.
- the inflow passage 13 and the outflow passage 14 have a constant depth, and at the rear end thereof, an inlet 11 and an outlet 12, which function as check valves, are formed.
- the length of the depth 14 is such that the filter structure 10 does not flow in a state in which the filter structure 10 is mounted in the inner space 230 of the fixing member 220 of the needle 200, so that the 14 has a constant depth.
- inlet 11 and the outlet 12 have a check valve function while being located in the opposite direction while the structure is opposite to each other.
- the inlet 11 and the outlet 12 are formed at the rear end of the inflow passage 13 and the outlet passage 14 having a constant depth in order to implement the function of the check valve in a simple structure.
- the outlet port 12 are formed in the form of a membrane having a constant thickness, and the membrane is formed by incision lines 11a and 12a which are normally closed by elasticity of the membrane and then opened by pressure.
- the membrane having the cut lines 11a and 12a formed therein forms the inner curved surfaces 11c and 12c so that the inlet 11 or the outlet 12 bend in the direction in which the liquid is discharged (advanced).
- the opening of the incision lines 11a and 12a is facilitated by the instantaneous pressure to facilitate the discharge, and the protruding curved surfaces 11b and 12b are formed to protrude on the opposite side so as to receive less pressure.
- the protruding curved surface 12b protruding outward from the outlet 12 of the outlet flow passage 14 is positioned to protrude in the center of the fixing member 220 of the needle 200 as shown in FIGS. 1B and 2B.
- the drug solution When the drug solution is sucked into the syringe body 100 in the ampoule, the drug solution naturally spreads out due to the protruding curved curved surface 12b and enters the inflow passage 13, and FIGS. 4 and 8.
- the protruding curved surface 11b protruding outward from the inlet 11 of the inflow passage 13 causes the medicine to flow completely into the outflow passage 14 when the medicine is injected into the patient. It is.
- the filter 20 used to filter foreign substances when the liquid is discharged to the outlet 12 through the outflow passage 14 to be injected into the patient is used on the plate 20a as shown in FIG.
- the inner cylinder can be used as a hollow cylinder 20b, and these can be used so that the pressure generated at the time of injection is not deformed or broken, and the filter 20 ) Is used to get a fixed position in the outlet flow path 14, these things are possible to use a variety of changes within the scope of the present invention.
- the filter 20 when the filter 20 is the cylinder 20b, the protruding cylinder and the front end portion 130 of the syringe body 100 are in close contact with each other so that the filter structure is not sucked up when the chemical liquid is sucked.
- the flat plate filter 20a When the filter 20 is the flat plate 20a, the flat plate filter 20a is fixed to prevent the plate plate 20a from being twisted by the partition wall 21 made of a hard material so as to support the front end 130 of the syringe body 100.
- the partition wall 21 extends backwards perpendicularly to the edge of the flat plate filter 20a so that the partition wall 21 protrudes backward and is not sucked by the front end 130 of the syringe body.
- an opening 22 is formed in the partition 21 to facilitate inhalation of the chemical liquid, and the partition 21 finally leads to an inflow passage of the filter structure 10 ( 13) and the flesh that forms the boundary of the outflow passage 14 is to reinforce the thin portion (a).
- the filter 20 is a flat plate 20a, the bottleneck occurs and the pressure increases, whereas when the filter 20 is used as the cylinder 20b having an empty internal space, the pressure is dispersed and injected into the patient. In this case, there is an advantage that the injection is made at a low pressure.
- an opening 22 is formed at a predetermined depth and at a predetermined interval in the partition wall 21 fixing the filter 20a, thereby distributing the bottleneck phenomenon, thereby reducing the pressure during injection. Is there.
- the filter structure 10 is integrally formed as shown in FIGS. 1 and 5, while the inflow passage 13 and the outflow passage 14 are biased to one side.
- the inlet and outlet 12 for maintaining the perfect function of the check valve although there is a problem that the inflow and outflow of the liquid inlet or outflow is not finely generated, and there is a part that requires a stronger pressure, because it is formed in a large amount Formation of incisions 11a and 12a formed at the inner side, or inwardly curved surfaces 11c and 12c formed inward of the inlet 11 or outlet 12 at which the incisions 11a and 12a are formed or formed outward.
- the protruding curved surfaces 11b and 12b are formed to easily implement the function of the check valve at the inlet 11 or the outlet 12, as well as to have a constant depth between the inlet 13 and the outlet 14.
- the filter structure 10 is fixed to the needle 200 by In the state of being mounted in the inner space 230 of 220, the position is not changed (when twisting does not occur) by the pressure generated during the inflow and outflow of the chemical solution, as well as the injection needle 200 It is a matter of course that the object of the present invention can be excellently achieved to filter and inject foreign substances without replacement.
- FIG. 13, 18, 22, and 28 show an inflow passage 13a having an inflow passage in the filter structure 10, and the filter structure 10 having the open inflow passage 13a has a conventional needle 200 It is to be implemented in a sealed type by mounting to the fixing member 220 of the), and the filter structure of Figures 13 and 18 is to be implemented in a sealed type by mounting in the inner space of the existing fixing member of the needle, Figure 22 and Figure 28 is to simplify the filter structure and lower the inlet pressure by mounting the filter structure on the inner wall forming the inner space of the fixing member of the conventional needle.
- the structure of the filter structure 10 having the open inflow passage has a closed outflow passage 14 formed at the center thereof, and an open inflow passage 13a is formed at the outer circumference thereof.
- the inflow passage 13a of the open type is made of a closed type by being mounted in close contact with the inner wall 230a in the inner space 230 of the fixing member 220 of the injection needle 200, and at this time, the inflow passage of the open type (
- the implementation of 13a) is a plurality of which are independently formed by the pillars 13b protruding to the outer wall of the hermetic flow channel 14 while having a predetermined interval and a predetermined thickness to the outer wall of the filter structure 10, where possible
- the lower pillars 13b are formed to have a predetermined interval so that the inflow passage 13a of the open type also maintains a uniform interval so that the pressure generated when the inflow is uniform is facilitated.
- the inlet 11b and the outlet 12 having a constant depth have the pillar 13b and the closed outlet passage 14 forming the open inlet passage 13a to have a predetermined depth.
- the filter structure 10 is formed in the inner space of the fixing member 220 of the injection needle 200 by forming the column 13b and the outlet passage 14 forming the open inlet passage 13a to have a constant depth. The position is not changed even by the pressure generated during the inflow and outflow of the chemical liquid in the state mounted on the 230.
- the inclined membrane is formed at the rear end of the open inlet passage 13a. 11a-1) to form a pillar 13b on the upper side of the inclined membrane 11a-1 so that the inclined membrane 11a-1 is folded to only one side by the pillar 13b so as to function as a check valve.
- the column 13b is supported by the inner space 230 of the fixing member 220 of the needle 200 so that the chemical liquid flows through the open inflow passage 13a.
- 11a-1) is easy to open and flows easily through the closed flow path 14 when the flow through the check valve 11a-1 by the inclination angle of the inclined membrane (11a-1) and the column check valve capable of intermittent in one direction The function of the will be perfect.
- the width of the inclined membrane 11a-1 protrudes outward so that the width of the inclined membrane 11a-1 is formed to be longer than the thickness of the column 13b so that the inclined membrane 11a-1 is easily opened.
- the column 13b is made equal to the protruding width of the inclined membrane 11a-1, and then the inclined membrane 11a-1 is folded only to a portion where the column 13b is not formed.
- the inflow of can be made easy.
- the outlet opening 12 formed at the rear end of the outlet passage 14 forms the outlet opening 12 in the form of a membrane having a constant thickness, as shown in FIGS. 1, 5, and 9, and the membrane is opened by pressure.
- the shape of the membrane in which the incision 12a is formed while being formed as the incision 12a is caused by opening the outlet 12 to bend to the inner curved surface 12c in the direction in which the chemical liquid is discharged (advanced). This facilitates the discharge, while the opposite side is formed to protrude to the protruding curved surface 12b so as to receive less pressure, preferentially only to the open inflow passage 13a and the outflow passage 14 during inflow or outflow.
- By allowing the chemical to flow it is possible to reduce the pressure while improving the function of the check valve.
- the protruding curved surface 12b protruding outward from the outlet 12 of the outlet flow passage 14 is the center of the fixing member 220 of the needle 200 as shown in FIGS. 15, 16 and 20, 21.
- the chemical liquid naturally spreads outward due to the protruding curved curved surface 12b and enters the open inflow passage 13a, FIGS. 15 and 16. 20 and 21, when the inflow opening 11a of the open inflow passage 13a is introduced, the inclined membrane 11a-1 is inwardly folded inward when the chemical liquid flows therein, and then the medicine liquid is injected into the patient.
- the inclined surface 11a-2 which is inclined while the inclined membrane 11a-1 opens to the outside, the chemical liquid is completely discharged by causing the inflow passage 14 to naturally flow. To do so.
- the filter 20 used to filter foreign substances when the drug solution is discharged to the outlet 12 through the outflow passage 14 to be injected into the patient is used on the plate filter 20a as shown in FIG.
- the inner cylinder can be used as a hollow cylinder 20b, and these are designed so that the pressure generated at the time of injection does not have deformation or breakage, and the filter ( 20 is a means for locking the outlet 14 to a certain position is used, these can be used in various modifications within the scope of the present invention.
- the filter 20 is a flat plate filter 20a, a bottleneck occurs and the pressure increases, whereas when the filter 20 is used as a cylinder 20b having an empty internal space, the pressure is dispersed to the patient. In the case of injection, there is an advantage that the injection is made at a low pressure.
- the partition wall 21 fixing the flat plate filter 20a facilitates the suction of the chemical liquid by forming the opening 22, and the partition wall 21 is formed in the filter structure 10. It also has the advantage of reinforcing the thin portion (a) forming the boundary between the inlet flow passage 13 and the outlet flow passage 14, and if the filter 20 is a flat plate 20a, the bottleneck occurs and the pressure increases. In the case of the flat plate filter 20a due to the opening 22 formed in the partition wall 21, the effect of dispersing the bottleneck is generated. Thus, the same pressure as in the case of using the cylindrical filter 20b of FIG. This has the advantage of being alleviated.
- the filter structure 22 and 28 show a state in which the filter structure 10 is deformed (guide groove) in the inner wall 230a forming the inner space 230 of the fixing member 220 of the conventional needle 200.
- the filter structure 10 is simplified and the inlet pressure is lowered by mounting at the same time.
- the structure of the filter structure 10 has a hermetic outlet passage 14 formed at the center thereof, and a check valve at the rear end of the outlet passage 14.
- An outlet 12 having a function is formed and an open inflow passage 13a is formed at an outer circumference thereof, and the open inflow passage 13a is formed in the needle 200 as shown in FIGS. 26 and 27.
- the guide groove 230b is vertically formed at a predetermined depth in the inner wall 230a forming the inner space 230 of the fixing member 220, so that the open inflow passage 13a is closed by the guide groove 230b. It is formed as.
- the guide groove 230b is formed to have a predetermined depth and spacing, so that the pressure generated when the chemical liquid flows into the syringe body 100 in a state in which the inflow passage is formed in a sealed type is made easy to inflow.
- the inner wall (230a) is formed with a guide groove (230b) formed in the inner wall (230a) forming the inner space 230 of the fixing member 220, the filter structure 10 forming the open inlet passage (13a)
- the guide groove 230b penetrates the stepped walls 240 and 240a formed in the inner wall forming the inner space of the fixing member. While being formed so that the upper surface of the inclined membrane (11a-1) is caught on the lower end of the step (240a) is to be formed inlet (11a) functioning as a check valve that operates only when the inlet.
- the guide groove 230b and the outlet passage 14 forming the open inlet passage 13a as a closed inlet passage have a predetermined depth so that the filter structure 10 is fixed to the needle member 220 of the injection needle 200. The position is not changed by the pressure generated during the inflow and outflow of the chemical liquid in the state of being mounted in the inner space 230 of the.
- the present invention in order to have a simple structure in the case of having a check valve function in the inlet 11a and the closed outlet 12 of the open inlet 13a in the present invention, in the present invention, in the form of a circular frame at the rear end of the open inlet 13a.
- the guide groove 13c is formed to protrude into the inclined film 11a-1 so that the upper side surface of the inclined film 11a-1 is recessed in the inner wall 230a forming the inner space 230 of the fixing member 220.
- the chemical liquid flows through the open inlet flow path 13a by being supported by the lower end of the step 240a of the guide groove 230b formed in the inner wall 230a of the inner space 230 of the fixing member 220.
- the desert (11a-1) is naturally folded to facilitate the flow into the syringe body, the closed type oil
- the inclination angle of the inclined membrane 11a-1 is closely supported at the lower end (stepping step 240a) of the guide groove 230b, thereby perfecting the function of the check valve capable of intermittent in one direction. It is to be done.
- the width of the inclined membrane 11a-1 to be supported by the lower end of the guide groove 230b is to be supported by an appropriate width in consideration of pressure when the chemical liquid flows out.
- the outlet 12 formed at the rear end of the closed flow passage 14 is formed in the form of a membrane having a constant thickness as shown in Figure 1, 5, 9, 13, 18, 22,
- the membrane is formed into an incision line 12a that is opened by pressure, and the form of the membrane in which the incision line 12a is formed is such that the outlet port 12 is curved inward in the direction in which the chemical liquid is discharged (forwarding).
- the opening of the incision 12a is facilitated so that the ejection can be easily carried out, while the protruding curved surface 12b is formed to protrude to the opposite side (outside) so as to receive less pressure during inflow, as well as an open inflow passage 13a.
- the curved surface 12b protruding outward from the outlet 12 of the outlet flow passage 14 is formed in the fixing member 220 of the needle 200 as shown in FIGS. 24, 25, 26 and 30, 31.
- the chemical is naturally spread through the protruding curved curved surface 12b and enters the open inflow passage 13a, FIGS. 26 and 31.
- the inflow passage of the closed type is injected when the medicine is injected to the patient by the inclined slope 11c. (14) allows all the chemicals to flow naturally so that the chemicals can be discharged completely.
- the guide groove 230b is formed to the stepped portion 240a where the top surface of the inclined membrane 11a-1 is supported and the stepped portion 240 supported by the front of the filter structure 10, thereby easily introducing the chemical liquid. Syringe filter structure 10 while being fixed without being entered upward.
- the filter 20 used to filter foreign substances when the liquid is discharged to the outlet 12 through the outflow passage 14 to be injected into the patient is used on the flat plate 20a as shown in FIG.
- the inner body can be used as an empty cylinder 20b, and they are each designed so that there is no deformation or breakage in the pressure generated at the time of injection, and the filter 20 ) Is used to get a fixed position in the outlet flow path 14, these things are possible to use a variety of changes within the scope of the present invention.
- the filter 20 is a flat plate 20a, the bottleneck occurs and the pressure increases, whereas when the filter 20 is used as the cylinder 20b having an empty internal space, the pressure is dispersed and injected into the patient. In this case, there is an advantage that the injection is made at low pressure.
- the open inflow passage is formed as a guide groove 230b in the inner wall 230a forming the inner space 230 of the fixing member 220 to form a closed inflow passage. The same effect is obtained even when the guide protrusion is formed in place of the groove.
- the present invention relates to a filter needle for medical use, which is used by being detached from a syringe consisting of a cylinder and a piston, and fine powder generated from the ampoule when the medicine liquid of the ampoule made of glass or plastic is sucked into the cylinder of the syringe. It is to prevent the injection to ensure the safety of the patient, and further facilitates inhalation and infusion.
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Claims (12)
- 바늘(210)을 고정하는 고정부재(220)의 내측에 내공간(230)이 형성되는 주사바늘(200)과 상기 주사바늘(200)의 고정부재(220)의 내공간(230)에 탈착되는 선단부(130)를 갖고 실린더(110)와 피스톤(120)을 갖는 주사기본체(100)로 이루어진 통상의 주사기에 있어서,상기 주사바늘(200)의 고정부재(220)의 내공간(230)에 장착되는 필터구조체(10)는 쳇크밸브 기능을 갖는 각각의 유입구(11)와 유출구(12)를 갖는 각각의 일방향성 유입유로(13)와 유출유로(14)를 갖고,상기 유출구(12)의 후단의 유출유로(14)의 내부에만 필터(20)가 장착되어 유입구(11)를 통하여 이물질등과 동시에 유입된 약액이 환자에게 주사시에는 이물질은 필터(20)에 걸러지면서 약액만이 유출구(12)를 통하여 주사토록 하는 것을 특징으로 하는 필터 니들
- 제 1항에 있어서, 상기 필터구조체(10)의 유입유로(13)와 유출유로(14)는 밀폐형으로 이루어진 것을 특징으로 하는 필터니들.
- 제 1항에 있어서, 상기 필터구조체(10)의 유입유로는 오픈형(13a)이고 유출유로는 밀폐형(14)으로 이루어짐을 특징으로 하는 필터 니들
- 제 1항 또는 제2항에 있어서, 상기 필터구조체의 유입구를 갖는 유입유로는 유출구를 갖는 유출유로의 외측에 방사상으로 형성되고 유출유로는 유입유로보다 상대적으로 큰 직경을 갖게 됨을 특징으로 하는 필터 니들
- 제 1항 또는 제3항에 있어서, 상기 필터구조체는 밀폐형으로 이루어진 유출유로의 외측으로 일정간격으로 기둥이 형성되어 오픈형의 유입유로(13a)를 구성한 상태에서 주사바늘의 고정부재의 내공간에 결합되면서 밀폐형의 유입유로를 형성함을 특징으로 하는 필터 니들
- 제4항에 있어서, 상기 필터구조체의 유입구와 유출구는 약액이 토출되는 내측으로는 내측만곡면을 형성하고, 그 외측으로 돌출만곡면을 형성하고, 그 선단으로 절개선에 의하여 쳇크밸브기능을 구비한 유입구와 유출구를 형성함을 특징으로 하는 필터 니들
- 제5항에 있어서, 상기 필터구조체의 밀폐형의 유출유로는 절개선으로 형성되는 유출구를 구비하고 오픈형의 유입유로는 일측으로만 절첩되어지는 경사막으로 이루어져 기둥에 의하여 지지되어져 쳇크밸브기능을 구비함을 특징으로 하는 필터니들.
- 제1항 또는 제3항에 있어서, 상기 필터구조체는 밀폐형으로 이루어진 유출유로의 외측으로 경사막(11a-1)을 갖는 오픈형의 유입유로(13a)를 구성한 상태에서, 주사바늘(200)의 고정부재(220)의 내공간(230)의 내벽(230a)에 형성된 가이드홈(230b)에 의하여 결합되면서 밀폐형의 유입유로를 형성함을 특징으로 하는 필터 니들
- 제8항에 있어서, 상기 가이드홈은 내공간의 내벽의 단턱을 가로질러 형성되고, 경사막은 가이드홈이 관통된 단턱(240a)의 하단에 상면이 밀착되어져 쳇크밸브기능을 구현토록 함을 특징으로 하는 필터니들.
- 제1항에 있어서, 상기 필터구조체의 필터는 평판상으로 이루어지고 상기 필터를 고정하는 격벽은 유출유로보다 돌출되어지고, 돌출된 격벽에는 유로의 흐름을 유도하기 위하여 방사상의 개구부가 형성됨을 특징으로 하는 필터 니들
- 제1항에 있어서, 상기 필터구조체의 유출유로에 장착되는 필터는 내공간을 형성하는 통체로 이루어짐을 특징으로 하는 필터 니들
- 제5항에 있어서, 상기 필터구조체의 기둥의 길이는 유출유로의 후단에 형성되는 유출구가 형성되는 돌출만곡면보다 더 돌출됨을 특징으로 하는 필터 니들
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SG2013076062A SG194174A1 (en) | 2011-04-08 | 2012-04-06 | Filter needle |
JP2014503605A JP5817050B2 (ja) | 2011-04-08 | 2012-04-06 | フィルターニードル |
US14/009,240 US9265883B2 (en) | 2011-04-08 | 2012-04-06 | Filter needle |
EP12767676.5A EP2695629B1 (en) | 2011-04-08 | 2012-04-06 | Filter needle |
CN201280017314.1A CN103492009B (zh) | 2011-04-08 | 2012-04-06 | 过滤针 |
US14/498,614 US9314570B2 (en) | 2011-04-08 | 2014-09-26 | Filter needle |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2011-0032459 | 2011-04-08 | ||
KR1020110032465A KR101713835B1 (ko) | 2011-04-08 | 2011-04-08 | 필터 니들 |
KR1020110032459A KR20120114742A (ko) | 2011-04-08 | 2011-04-08 | 필터니들 |
KR10-2011-0032465 | 2011-04-08 | ||
KR10-2011-0068521 | 2011-07-11 | ||
KR1020110068521A KR101222881B1 (ko) | 2011-07-11 | 2011-07-11 | 필터 니들 |
KR10-2011-0112458 | 2011-10-31 | ||
KR1020110112458A KR101245378B1 (ko) | 2011-10-31 | 2011-10-31 | 필터 니들 |
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US14/009,240 A-371-Of-International US9265883B2 (en) | 2011-04-08 | 2012-04-06 | Filter needle |
US14/498,614 Continuation US9314570B2 (en) | 2011-04-08 | 2014-09-26 | Filter needle |
Publications (2)
Publication Number | Publication Date |
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WO2012138177A2 true WO2012138177A2 (ko) | 2012-10-11 |
WO2012138177A3 WO2012138177A3 (ko) | 2013-03-07 |
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PCT/KR2012/002632 WO2012138177A2 (ko) | 2011-04-08 | 2012-04-06 | 필터 니들. |
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US (2) | US9265883B2 (ko) |
EP (1) | EP2695629B1 (ko) |
JP (1) | JP5817050B2 (ko) |
CN (3) | CN106237444B (ko) |
SG (1) | SG194174A1 (ko) |
WO (1) | WO2012138177A2 (ko) |
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Also Published As
Publication number | Publication date |
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CN106362253A (zh) | 2017-02-01 |
CN103492009A (zh) | 2014-01-01 |
CN106237444B (zh) | 2019-12-13 |
US20150045738A1 (en) | 2015-02-12 |
US9265883B2 (en) | 2016-02-23 |
JP5817050B2 (ja) | 2015-11-18 |
CN103492009B (zh) | 2017-04-19 |
EP2695629B1 (en) | 2018-11-07 |
SG194174A1 (en) | 2013-11-29 |
US9314570B2 (en) | 2016-04-19 |
WO2012138177A3 (ko) | 2013-03-07 |
EP2695629A4 (en) | 2014-12-31 |
CN106237444A (zh) | 2016-12-21 |
US20140213982A1 (en) | 2014-07-31 |
EP2695629A2 (en) | 2014-02-12 |
CN106362253B (zh) | 2020-02-11 |
JP2014516610A (ja) | 2014-07-17 |
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