WO2017217406A1 - 液体試料検査キット用膜担体、液体試料検査キット及び液体試料検査キットの製造方法 - Google Patents
液体試料検査キット用膜担体、液体試料検査キット及び液体試料検査キットの製造方法 Download PDFInfo
- Publication number
- WO2017217406A1 WO2017217406A1 PCT/JP2017/021801 JP2017021801W WO2017217406A1 WO 2017217406 A1 WO2017217406 A1 WO 2017217406A1 JP 2017021801 W JP2017021801 W JP 2017021801W WO 2017217406 A1 WO2017217406 A1 WO 2017217406A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid sample
- substance
- membrane carrier
- detected
- region
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54386—Analytical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/558—Immunoassay; Biospecific binding assay; Materials therefor using diffusion or migration of antigen or antibody
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/50273—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the means or forces applied to move the fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5023—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures with a sample being transported to, and subsequently stored in an absorbent for analysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502746—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the means for controlling flow resistance, e.g. flow controllers, baffles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54386—Analytical elements
- G01N33/54387—Immunochromatographic test strips
- G01N33/54388—Immunochromatographic test strips based on lateral flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/58—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving labelled substances
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N37/00—Details not covered by any other group of this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0406—Moving fluids with specific forces or mechanical means specific forces capillary forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/08—Regulating or influencing the flow resistance
- B01L2400/084—Passive control of flow resistance
Definitions
- the present invention relates to a membrane support for a liquid sample inspection kit accompanied by a change in flow rate during inspection, a liquid sample inspection kit using the same, and a method for manufacturing the same.
- the Point of Care Test (POCT) reagent which measures the morbidity, pregnancy, blood glucose level, etc. of an infectious disease by using an antigen-antibody reaction or the like, has attracted attention.
- the POCT reagent is characterized in that the result can be discriminated in a short time, the method of use is simple and inexpensive. Because of these characteristics, the POCT reagent is frequently used for examinations and regular examinations at a mild stage of symptoms, and is an important diagnostic tool in home medical care that is expected to increase in the future.
- determination is performed by introducing a liquid sample such as blood into a test kit and detecting a specific substance to be detected contained therein.
- An immunochromatography method is often used as a method for detecting a specific substance to be detected from a liquid sample.
- the immunochromatography method is a substance in which the liquid to be dropped on the membrane carrier of the test kit moves on the membrane carrier, the substance to be detected binds to the label, and these are immobilized in the test kit.
- This is a technique of specifically binding to (hereinafter referred to as a detection substance) and detecting a change in color or weight resulting therefrom.
- the detection substance may be rephrased as a reagent.
- a well-known method for detecting a substance to be detected is to detect a color change caused by using colored latex particles, fluorescent latex particles, metal colloid particles, etc. as a label through an optical measuring instrument such as an absorbance meter. It has been.
- a lateral flow type kit using a nitrocellulose membrane is often used (Patent Document 1).
- the nitrocellulose membrane has many fine holes with a diameter of about several ⁇ m, and the liquid sample moves through the holes by capillary force.
- the nitrocellulose membrane is derived from a natural product and the pore diameter and the way in which the pores are connected are not uniform, there is a difference in the flow rate of the liquid sample in each membrane. If there is a difference in flow rate, the time taken to detect the substance to be detected also changes, and as a result, the substance to be detected may be erroneously determined as non-detected before binding occurs.
- Patent Documents 2 to 6 a technique of artificially creating a fine channel has been devised.
- a film carrier having a uniform structure can be produced, so that the possibility of erroneous detection as non-detection before the detected substance is bound can be reduced.
- JP 2014-0662820 A Japanese Patent No. 4597664 Special table 2012-524894 gazette Japanese Patent No. 5609648 JP 2016-011943 A JP 2013-113633 A US Patent Application Publication No. 2011/0284110
- Patent Document 7 there is a report that the flow rate of the liquid sample changes depending on the flow channel structure, but there is no description about the effect of the change of the flow rate.
- an object of the present invention is to provide a test kit capable of highly sensitive determination in a short time in an immunochromatography method capable of confirming that a target substance has been detected by an optical method.
- a membrane carrier for a test kit for detecting a substance to be detected in a liquid sample Comprising at least one flow path capable of transporting a liquid sample;
- the bottom of the channel is provided with a fine structure that creates a capillary action for transporting the liquid sample
- a membrane carrier for a liquid sample test kit wherein the fine structure is provided so as to change along the transport direction of the liquid sample.
- the bottom area of the microstructure is 75 [mu] m 2 or more 250000Myuemu 2 or less in the flow path, (1) to (5) a liquid sample test kit membrane carrier according to any one of.
- a liquid sample test kit membrane carrier according to any one of.
- a liquid sample inspection kit for detecting a substance to be detected in a liquid sample (1) to (8) comprising a membrane carrier for a liquid sample inspection kit described in any one of The membrane carrier has a detection zone for detecting a substance to be detected in the liquid sample, A liquid sample inspection kit in which when a substance to be detected is detected in a detection zone, a color change that can be confirmed by an optical technique occurs.
- a label having an antibody or antigen-binding fragment thereof that specifically reacts with the substance to be detected in the liquid sample is provided in at least a part of the liquid sample test kit so that it can react with the substance to be detected.
- the liquid sample inspection kit according to (9), wherein the color change is caused by a label bonded to a substance to be detected.
- test kit capable of highly sensitive determination in a short time in an immunochromatography method capable of confirming that a substance to be detected has been detected by an optical technique.
- (A) is an example of embodiment by this invention, is an overhead view (top view) of a fine structure
- (b) is a perspective view of the convex part which comprises the fine structure shown to (a).
- (A) is an example of embodiment by this invention, is an overhead view (top view) of a fine structure
- (b) is a perspective view of the convex part which comprises the fine structure shown to (a).
- (A) is an example of embodiment by this invention, is an overhead view (top view) of a fine structure
- (b) is a perspective view of the convex part which comprises the fine structure shown to (a).
- (A) is an example of embodiment by this invention, is an overhead view (top view) of a fine structure
- (b) is a perspective view of the convex part which comprises the fine structure shown to (a).
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has a microstructure.
- membrane carrier which has
- the membrane carrier for a liquid sample inspection kit refers to a membrane carrier for a liquid sample inspection kit that detects a substance to be detected in the liquid sample, for example.
- the substance to be detected is not limited in any way, and may be any substance capable of antigen-antibody reaction with an antibody such as various pathogens and various clinical markers.
- Specific examples of substances to be detected include virus antigens such as influenza virus, norovirus, adenovirus, RS virus, HAV, HBs and HIV, MRSA, group A streptococcus, group B streptococci, legionella bacteria and the like, bacteria, etc.
- the liquid sample test kit and membrane of the present embodiment are particularly suitable when the substance to be detected is an urgent matter for detection and treatment such as influenza virus, norovirus, C-reactive protein, myoglobin, and cardiac troponin.
- the usefulness of the carrier is particularly great.
- the substance to be detected may be an antigen capable of inducing an immune reaction by itself, and may be a hapten capable of inducing an immune reaction when bound to an antibody by an antigen-antibody reaction.
- the substance to be detected is usually suspended or dissolved in the liquid sample.
- the liquid sample may be, for example, a sample in which the substance to be detected is suspended or dissolved in a buffer solution.
- the liquid sample inspection kit (hereinafter also simply referred to as “inspection kit”) detects a substance to be detected in the liquid sample.
- FIG. 1 is a schematic top view of an inspection kit.
- the test kit 18 includes a membrane carrier 3 and a casing 18 a that houses the membrane carrier 3.
- the film carrier 3 has, on its surface, a dropping zone 3x where a liquid sample is dropped and a detection zone 3y for detecting a substance to be detected in the liquid sample.
- the dripping zone 3x is exposed at the first opening 18b of the housing 18a.
- the detection zone 3y is exposed at the second opening 18c of the housing 18a.
- FIG. 2 is a schematic top view of the membrane carrier 3.
- the membrane carrier 3 includes at least one flow path 2 for transporting a liquid sample.
- a fine structure is provided on the bottom surface of the flow path 2 (not shown, details will be described later).
- the fine structure is located at least between the dropping zone 3x and the detection zone 3y.
- a fine structure may be provided over the entire surface of the membrane carrier 3.
- the entire surface of the membrane carrier 3 may be the liquid sample flow path 2.
- the microstructure causes capillary action. Due to the capillary action of the microstructure, the liquid sample is transported from the dropping zone 3x to the detection zone 3y (along the transport direction d) via the microstructure. When the substance to be detected in the liquid sample is detected in the detection zone 3y, the color of the detection zone 3y changes.
- the overall shape of the membrane carrier 3 is not particularly limited, but may be, for example, a polygon such as a quadrangle, a circle, or an ellipse.
- the longitudinal width (length in the short direction) L1 of the membrane carrier 3 may be, for example, 2 mm or more and 100 mm or less
- the lateral width (length in the longitudinal direction) L2 of the membrane carrier 3 May be, for example, 2 mm or more and 100 mm or less.
- the thickness of the membrane carrier excluding the height of the fine structure may be, for example, 0.1 mm or more and 10 mm or less.
- the fine structure is provided so as to change along the transport direction d of the liquid sample.
- the membrane carrier 3 has a plurality of regions (first region A, second region B, and third region C in this order from the dropping zone side) provided along the transport direction d of the liquid sample. Adjacent regions (first region A and second region B, second region B and third region C) have different microstructures.
- FIGS. 3 to 6 each show an example of the fine structure provided on the bottom surface of the flow path and the convex portions constituting the fine structure in the present embodiment.
- (a) is an overhead view (top view) of the fine structure
- (b) is a perspective view of convex portions constituting the fine structure shown in (a).
- the fine structure 7 is the total of the convex portions 8. That is, the membrane carrier 3 includes a flat portion 9 corresponding to the bottom surface of the liquid sample channel 2 and a plurality of convex portions 8 protruding from the flat portion 9.
- the space between the plurality of convex portions 8 functions as a flow path 2 for transporting the liquid sample along the surface of the membrane carrier 3.
- the gap in the fine structure 7 functions as the flow path 2 for transporting the liquid sample along the surface of the membrane carrier 3 by capillary action.
- the plurality of convex portions 8 may be arranged on the surface of the membrane carrier 3 regularly or translationally symmetrically.
- the shape of the plurality of convex portions 8 constituting the fine structure 7 can be freely selected.
- Examples of the shape of the convex portion 8 include a cone, a polygonal pyramid, a truncated cone, a polygonal frustum, a cylinder, a polygonal column, a hemisphere, and a semi-ellipsoid.
- the shape of the convex portion 8a may be a cone.
- the shape of the convex portion 8b may be a quadrangular pyramid.
- the shape of the convex portion 8c may be a hexagonal pyramid.
- the shape of the convex portion 8 d may be a horizontally placed triangular prism (a triangular prism placed so that one side surface (rectangular surface) of the triangular prism is in contact with the flat portion 9).
- a triangular prism placed so that one side surface (rectangular surface) of the triangular prism is in contact with the flat portion 9.
- the entire surface of the membrane carrier 3 can be visually recognized when the microstructure 7 is viewed from above (as viewed from above), and the color change when the detection target substance is detected can be easily confirmed by an optical method.
- a cone structure such as a cone or a polygonal pyramid is suitable as the shape of the convex portion 8.
- the shape of the convex portion 8 constituting the fine structure 7 does not need to be a geometrically accurate shape, and may be a shape with rounded corners or a shape with fine irregularities on the surface. Good.
- the diameter 4 of the bottom surface 10 of the convex portion 8 constituting the fine structure 7 may be 10 ⁇ m or more and 1000 ⁇ m or less, more preferably 15 ⁇ m or more and 1000 ⁇ m or less.
- the diameter 4 of the bottom surface 10 of the convex portion 8 may vary in this range between the plurality of convex portions 8 (may be different from each other).
- the diameter 4 of the bottom surface 10 of the convex portion 8 is 10 ⁇ m or more, the micro-processing cost of the mold for forming the fine structure 7 is reduced, and the infinite number of fine structures 7 are uniformly formed on the surface of the film carrier 3 having a large area. Easy to make.
- a fine structure constituted by the convex portions 8 having a diameter 4 of the bottom surface 10 of 10 ⁇ m or more is more practical.
- the diameter of the bottom surface 10 of the convex portion 8 is 10 ⁇ m or more, the capillary force necessary to move the liquid sample tends to increase.
- the diameter 4 of the bottom surface 10 of the convex portion 8 is 1000 ⁇ m or less, the volume of the metal scraped from the metal member at the time of producing the mold can be reduced, and the production cost of the mold and the film carrier 3 can be suppressed.
- the diameter of the bottom surface 10 of the convex portion 8 is 1000 ⁇ m or less, the area of the flow path 2 in the membrane carrier 3 can be reduced, so that the liquid sample inspection kit 18 can be downsized and the liquid sample inspection kit 18 itself. This is advantageous for transportation.
- the diameter 4 of the bottom surface 10 of the convex portion 8 is defined as the representative length of the bottom surface 10 of the convex portion 8.
- the representative length of the bottom surface 10 is the diameter when the shape of the bottom surface 10 is a circle, the length of the shortest side when it is a triangle or a quadrangle, the length of the longest diagonal line when it is a pentagon or more polygon, In the case of a shape, the maximum length at the bottom surface 10 is used.
- FIG. 7 is a cross-sectional view taken along the line VII-VII of the membrane carrier 3a having the microstructure 7a shown in FIG.
- the diameter 4a of the bottom surface 10a of the convex portion 8a is the diameter of the bottom surface (circle) of the cone.
- the diameter 4b of the bottom surface 10b of the convex portion 8b is the length of the side of the bottom surface (regular square) 10b.
- the diameter 4c of the bottom surface 10c of the convex portion 8c is the length of the diagonal line passing through the center of the bottom surface (regular hexagonal shape) 10c (the length of the longest diagonal line). That is).
- the diameter 4d of the bottom surface 10d of the convex portion 8d is the length of the shortest side of the bottom surface (rectangular) 10d (in FIG. (Length in the direction perpendicular to the transport direction d of the sample).
- the height 6 of the convex portion 8 constituting the fine structure 7 is preferably 10 ⁇ m or more and 500 ⁇ m or less, and more preferably 15 ⁇ m or more and 500 ⁇ m.
- the height 6 of the convex portion 8 may vary within this range between the plurality of convex portions 8 (may be different from each other).
- the height 6 of the convex portion 8 is 10 ⁇ m or more, the volume of the flow path 2 is increased, and the liquid sample can be developed in a shorter time.
- the height 6 of the convex portion 8 is 500 ⁇ m or less, the time and cost for producing the fine structure 7 can be reduced, and the fine structure 7 can be produced more easily.
- the height 6 of the convex portion 8 is defined as the maximum length of the convex portion 8 in the direction orthogonal to the flat portion 9. As shown in FIGS. 3 and 7, when the shape of the convex portion 8a is a cone, the height 6a of the convex portion 8a is the maximum length of the convex portion 8a in the direction orthogonal to the flat portion 9 (the height of the cone). ). As shown in FIG. 4, when the shape of the convex portion 8b is a quadrangular pyramid, the height 6b of the convex portion 8b is the maximum length of the convex portion 8b in the direction orthogonal to the flat portion 9 (height of the quadrangular pyramid). It is. As shown in FIG.
- the height 6c of the convex portion 8c is the maximum length of the convex portion 8c in the direction orthogonal to the flat portion 9 (the height of the hexagonal pyramid). It is. As shown in FIG. 6, when the shape of the convex portion 8d is a horizontal triangular prism, the height 6d of the convex portion 8d is the maximum length of the convex portion 8d in the direction orthogonal to the flat portion 9 (horizontal triangular prism). Of height).
- Bottom area of the projections 8 which constitute the microstructure 7 (the area of the bottom surface 10 per one convex portion 8) is preferably 75 [mu] m 2 or more 250000Myuemu 2 or less.
- the bottom area of the convex portion 8 may vary within this range among the plurality of convex portions 8 (may be different from each other).
- the bottom area of the convex portion 8 is 78 ⁇ m 2 or more, microfabrication is facilitated, and the cost for manufacturing the fine structure is further reduced.
- the bottom area of the convex portion 8 is 250,000 ⁇ m 2 or less, the number of the convex portions 8 constituting the microstructure 7 in one inspection kit is increased, and the development of the liquid sample becomes easier.
- the closest distance 5 between the convex portions 8 constituting the fine structure 7 is preferably 500 ⁇ m or less, more preferably 2 ⁇ m or more and 100 ⁇ m or less.
- the closest distance 5 between the convex portions 8 may be changed in this range between the plurality of convex portions 8 (may be different from each other).
- the closest distance 5 between the convex portions 8 cannot be smaller than 0 ⁇ m, and when it is 500 ⁇ m or less, the contact area between the liquid sample and the flow path 2 increases, thereby increasing the capillary force, thereby increasing the liquid sample. It becomes easier to move.
- “the closest distance between the convex portions 8” is the closest distance between a pair of adjacent convex portions 8 in the same region.
- the aspect ratio of the convex portion 8 constituting the fine structure 7 is preferably 0.1 or more and 2.0 or less.
- the aspect ratio here is a value (Lh / Lv) obtained by dividing the height 6 (Lh) of the convex portion 8 by the representative length (diameter 4) (Lv) of the bottom surface 10 of the convex portion 8.
- the aspect ratio is 0.1 or more, the contact area between the liquid sample and the flow path 2 is increased, which increases the capillary force, so that it is easier to move the liquid sample.
- the aspect ratio is 2.0 or less, it becomes easier to produce a fine structure.
- the fine structure 7 may be composed of the same convex portions 8 in the same region.
- the fine structure 7 may be composed of different convex portions 8 in the same region.
- the different convex portions 8 may be arranged according to a certain rule along the transport direction d of the liquid sample in the same region. That is, the convex portion 8 has, for example, the diameter 4 of the bottom surface 10 of the convex portion 8, the height 6 of the convex portion 8, the closest distance 5 between the convex portions 8, and the aspect ratio ( At least one of Lh / Lv) may be arranged to change (increase or decrease) according to a certain rule along the transport direction d of the liquid sample.
- FIG. 8 shows a part (a first region A and a second region B (or second region having different microstructures) in which the microstructure 7 changes along the transport direction of the liquid sample in the membrane carrier 3 shown in FIG.
- An example of an overhead view (top view) in which the vicinity of the boundary between the region B and the third region C) is enlarged) is shown.
- the first region A (second region B) and the second region B (third region C) have different microstructures 7A (7B) and 7B (7C). is doing.
- the convex portion 8A (8B) , 8B (8C) have a conical shape as shown in FIG. 3, but the diameters 4A (4B) and 4B (4C) of the bottom surface of the protrusion 8 are different from each other, and the protrusions in the same region
- the closest distances 5A (5B) and 5B (5C) between the portions 8 are also different from each other.
- the shape of the convex portion 8, the diameter 4 of the bottom surface 10 of the convex portion 8, the bottom area of the convex portion 8, the height 6 of the convex portion 8, the closest distance 5 between the convex portions 8 in the same region, and the convex At least one of the aspect ratios (Lh / Lv) of the portion 8 may be different from each other.
- Adjacent areas are arranged with a predetermined interval between the areas.
- the closest distance 5D also referred to as a buffer distance
- the buffer distance 5D may be 1 ⁇ m or more.
- the flow rate of the liquid sample flowing in the liquid sample inspection kit 18 changes along the transport direction d of the liquid sample.
- the flow rate in the liquid sample inspection kit 18 has an average flow rate in the regions (first region A, second region B, and third region C) in which the fine structure 7 is uniformly formed. evaluate.
- the region where the fine structure 7 is uniformly formed means a region where the same fine structure 7 is arranged or a region where the fine structure 7 continues to change uniformly according to a certain rule.
- the average flow velocity is the distance (shortest distance) from the start point to the end point in the liquid sample traveling direction (transport direction d) in the region where the fine structure 7 is uniformly produced (transportation from the start point to the end point (transport). It is the value divided by the time it took.
- the flow rate (average flow rate in each region) in the liquid sample inspection kit 18 can be measured by the method described in Examples described later.
- FIG. 9 is a top view of a membrane carrier in another embodiment.
- the detection zone 3 y is provided in the third region C, but in the membrane carrier 13 shown in FIG. 9, the detection zone 13 y is provided in the second region B.
- the dropping zone 13 x and the detection zone 13 y may be formed over substantially the entire short side direction of the membrane carrier 13.
- the flow velocity in the second region B having the detection zone 13y is preferably slower than the flow velocity in the first region A having the dropping zone 13x.
- the membrane carrier 13 uses the transport direction d of the second region B.
- the length in is shorter than the length in the transport direction d of the first region A (and further the third region C).
- the flow velocity in the third region C is faster than the flow velocity in the second region B having the detection zone 13y.
- the time taken for the liquid sample to travel (transport) from the start point to the end point becomes shorter, leading to a reduction in the determination time, and in addition, detection from the third region C (downstream region). It becomes possible to suppress the backflow of the liquid sample to the second region B having the zone 13y.
- the ratio of the largest flow rate to the smallest flow rate is preferably 1 or more and 10 or less.
- the ratio of the largest flow rate to the smallest flow rate is more preferably more than 1.0 and 10 or less, and still more preferably 1.2 or more and 10 or less.
- the ratio when the largest flow rate is divided by the smallest flow rate is never smaller than 1.
- the “smallest flow rate” and “largest flow rate” are average flow rates measured for a plurality of regions (first region A, second region B, and third region C) provided in the membrane carrier 3. Of these, the smallest average flow velocity and the largest average flow velocity are meant.
- Both the smallest flow velocity and the largest flow velocity in the liquid sample inspection kit 18 are preferably 0.30 mm / s or more and 5.0 mm / s or less.
- the smallest flow velocity is 0.30 mm / s or more, problems due to manufacturing variations when the test kit is manufactured (for example, the development of the liquid sample is stopped) are further suppressed.
- the largest flow velocity is 5.0 mm / s or less, it becomes easier to control the flow of the liquid sample in the flow path 2, and the liquid sample can be prevented from overflowing out of the flow path 2.
- the microstructure 7 and the membrane carrier 3 of the liquid sample inspection kit 18 of the present embodiment may be made of a thermoplastic plastic.
- the film carrier 3 having the fine structure 7 can be produced by processing a film-like substrate made of thermoplastic plastic.
- the processing method include thermal imprint, UV imprint, injection molding, etching, photolithography, mechanical cutting, laser processing, and the like. Of these, thermal imprinting on thermoplastics is suitable as a method for performing precise processing at low cost.
- thermoplastic plastics include polyester resins, polyolefin resins, polystyrene resins, polycarbonate resins, fluorine resins, and acrylic resins.
- PET polyethylene terephthalate
- COP cycloolefin polymer
- PP polypropylene
- PS polystyrene
- PC polycarbonate
- PVDF polyvinylidene fluoride
- PMMA polymethyl methacrylate
- the upper part of the cone is thinner than the bottom surface, so the volume cut out when making the mold is smaller than the column body on the bottom surface.
- the mold can be manufactured at a low cost. In this case, it becomes possible to detect the detection target substance in the liquid sample at a lower cost.
- the membrane carrier 3 is the membrane carrier 3 for the liquid sample inspection kit 18 that detects the substance to be detected in the liquid sample, and transports the liquid sample provided on one surface of the membrane carrier 3.
- a plurality of regions A, B, and C having the microstructure 7 and the flow path 2 are provided, and the adjacent regions A and B (B and C) have the microstructures 7 different from each other.
- a color change occurs when a substance to be detected is detected in the detection zone 3y of the membrane carrier 3.
- the color change may be a color change that can be confirmed by an optical method.
- the optical method there are mainly two methods: a visual determination and a method of measuring fluorescence intensity.
- a visual determination when measuring color after detection and before detection by color system CIE1976L * a * b * color space, the color difference between two color stimuli (JIS Z8781-4: according to 2013 It is preferable that a color change occurs such that ⁇ E) is 0.5 or more. When this color difference is 0.5 or more, it becomes easy to visually confirm the color difference.
- the detection substance is immobilized on at least a part of the flow path 2. That is, a detection substance that detects a substance to be detected is fixed in the detection zone 3y. The color change in the detection zone 3y occurs when the detection target substance is held in the detection zone 3y by the detection substance (reacts with the detection substance).
- the method of manufacturing the liquid sample inspection kit 18 includes a step of fixing a detection substance that causes a color change by holding the detection target substance in the detection zone 3y in the detection zone 3y.
- a surface treatment may be performed in advance on the portion of the membrane carrier 3 where the detection zone 3y is provided.
- the surface treatment method is not limited in any way.
- various methods such as UV irradiation, UV / ozone treatment, various plasma treatments, surface modification with 3-aminopropylene silane, and Glutaraldehyde can be used.
- examples of the detection substance include antibodies.
- the antibody is an antibody that undergoes an antigen-antibody reaction with a test substance, and may be a polyclonal antibody or a monoclonal antibody.
- the color change in the detection zone 3y may be caused by a label having an antibody or an antigen-binding fragment thereof that specifically reacts with the substance to be detected in the liquid sample.
- the color change is caused, for example, when the label is colored by being held in the detection zone 3y (reacted (bound) with the detection substance) by the detection substance.
- the labeled body may be, for example, one obtained by binding the antibody or antigen-binding fragment thereof to particles such as colloid particles or latex particles.
- An antigen-binding fragment refers to a fragment that can specifically bind to a substance to be detected, for example, an antigen-binding fragment of an antibody.
- the label can be bound to the substance to be detected via an antibody or an antigen-binding fragment thereof.
- the particles may be magnetic or fluorescent. Examples of the colloid particles include gold colloid particles and metal colloid particles such as platinum colloid particles.
- the particles are preferably latex particles in terms of particle size control, dispersion stability, and ease of bonding.
- the material for the latex particles is not particularly limited, but polystyrene is preferred.
- the particles are preferably colored particles or fluorescent particles, and more preferably colored particles, from the viewpoint of visibility.
- the colored particles may be any particles that can detect the color with the naked eye.
- the fluorescent particles may contain a fluorescent substance.
- the particles may be colored latex particles or fluorescent latex particles. When the particles are colored latex particles, the color change described above is suitably determined visually. Further, when the particles are fluorescent latex particles, the above-described color change is suitably determined by measuring the fluorescence intensity.
- the labeling body as described above is provided on at least a part of the test kit 18 so that it can react with the substance to be detected in the dropped liquid sample.
- the labeling body may be provided, for example, on a member in the test kit 18 or may be provided on at least a part of the flow path 2 of the membrane carrier 3 (upstream from the detection zone 3y).
- the labeled body that has reacted (bound) with the substance to be detected is held in the detection zone 3y by the detection substance (by the detection substance reacting (binding) with the substance to be detected). Thereby, a color change (coloration by a marker) in the detection zone 3y occurs.
- the liquid sample inspection method according to one aspect of the present embodiment is an inspection method using the inspection kit 18.
- a liquid sample and a label that specifically binds to a substance to be detected in the liquid sample are mixed to prepare a mixed liquid sample (mixed liquid sample),
- the step of binding the substance to be detected and the labeling body, the step of dropping the mixed liquid sample into the dropping zone 3x provided on the membrane carrier 3, and the microstructure 7 allow the mixed liquid sample to be detected from the dropping zone 3x to the detection zone 3y.
- a step of detecting a color change (coloration of the marker) in the detection zone 3y is detecting a color change (coloration of the marker) in the detection zone 3y.
- the step of dropping a liquid sample onto the dropping zone 3x of the surface of the film carrier 3 and the fine structure 7 (plural protrusions 8) formed on the surface of the film carrier 3 are provided.
- the substance to be detected is combined with a reagent that is fixed to the detection zone 3y to detect a color change in the detection zone 3y (the presence or absence of a color change is optically determined). And a process.
- the method of mixing the liquid sample and the label is not particularly limited in the step of binding the target substance and the label to each other.
- a method of adding a liquid sample to a container containing a labeled body may be used, or a liquid containing a labeled body and a liquid sample may be mixed, for example.
- a filter may be sandwiched between the dropping port of a container in which a liquid sample is placed, and a labeling body may be immobilized in the filter.
- FIG. 10 shows a mold 20 for creating a fine structure.
- the mold 20 shown in FIG. 10 has a plurality of regions (first region A, second region B, and third region C), and the surface has a fine structure (convex portion) shown in FIG. Corresponding recesses are formed (not shown).
- the mold 20 is made of aluminum alloy A5052.
- the center of this mold (mold) is finely processed in a range of 30 mm ⁇ 30 mm.
- 8 has a conical recess with a diameter of 10 ⁇ m and a depth (sometimes referred to as a height in the table) of 10 ⁇ m, and the closest distance (5A, 5C) between the microstructures is 5 ⁇ m, as shown in FIG. Are lined up.
- a conical concave portion having a diameter of 10 ⁇ m and a depth of 10 ⁇ m is illustrated with the closest distance between microstructures (5B) of the microstructure in the region B being 5 ⁇ m. They are arranged in a triangular array form (staggered) like 8.
- the buffer distance 5D between the regions A and B and the boundary between the regions B and C is 5 ⁇ m.
- a release treatment was applied to the uneven surface of the mold in order to easily and reliably peel off the mold and the thermoplastic when transferred.
- the mold release treatment was performed by immersing in OPTOOL HD-2100TH manufactured by Daikin Industries, Ltd. for about 1 minute, drying, and allowing to stand overnight.
- thermoplastic plastic polystyrene (Denka styrene sheet manufactured by Denka Co., Ltd., film thickness: 300 ⁇ m) was used. Thermal imprinting was used as a processing method, and an X-300 manufactured by SCIVAX was used as the apparatus.
- the molding temperature was 120 ° C.
- the applied pressure was 5.5 MPa
- transfer was performed for 10 minutes.
- the thermoplastic resin and the mold were cooled to 80 ° C. while applying pressure, and then the pressure was removed to prepare a film carrier having regions A, B, and C in order from one end side.
- Example 2 A membrane carrier was produced under the same conditions as in Experimental Example 1, except that the microstructures of regions A, B, and C in Experimental Example 1 were conical concave portions having a diameter of 100 ⁇ m and a depth of 100 ⁇ m.
- a membrane carrier was produced under the same conditions as in Experimental Example 1 except that the microstructures of regions A, B, and C in Experimental Example 1 were conical recesses having a diameter of 500 ⁇ m and a depth of 500 ⁇ m.
- Example 4 Except that the microstructures of regions A and C in Experimental Example 1 are conical recesses with a diameter of 100 ⁇ m and a depth of 100 ⁇ m, and the microstructures of region B are conical recesses with a diameter of 30 ⁇ m and a depth of 30 ⁇ m.
- a membrane carrier was prepared under the same conditions as in Experimental Example 1.
- Example 5 Except that the microstructures of regions A and C in Experimental Example 4 are conical recesses with a diameter of 250 ⁇ m and a depth of 250 ⁇ m, and the microstructures of region B are conical recesses with a diameter of 30 ⁇ m and a depth of 30 ⁇ m.
- a membrane carrier was prepared under the same conditions as in Experimental Example 1.
- Example 6 Except that the microstructure of regions A and C in Experimental Example 4 is a conical recess having a diameter of 250 ⁇ m and a depth of 250 ⁇ m, and the microstructure of region B is a conical recess having a diameter of 10 ⁇ m and a depth of 10 ⁇ m.
- a membrane carrier was prepared under the same conditions as in Experimental Example 1.
- Example 7 Except that the microstructure of regions A and C in Experimental Example 4 is a conical recess having a diameter of 100 ⁇ m and a depth of 100 ⁇ m, and the microstructure of region B is a conical recess having a diameter of 10 ⁇ m and a depth of 10 ⁇ m.
- a membrane carrier was prepared under the same conditions as in Experimental Example 1.
- Example 9 The fine structure of region A in Experimental Example 4 is divided into 16 sections each having a width of 1 mm in the direction perpendicular to the transport direction, and as the region B is approached, the diameter and depth of the conical recess for each section are 100 ⁇ m to 4.7 ⁇ m. It is assumed that it decreases (that is, decreases by 100 ⁇ m to 4.7 ⁇ m along the transport direction), and the fine structure of the region C is further divided into 11 sections each having a width of 1 mm in the direction perpendicular to the transport direction. Except that the diameter and depth of the conical recess for each section decrease from 100 ⁇ m to 7 ⁇ m as it approaches B (that is, increase from 100 ⁇ m to 7 ⁇ m along the transport direction). A membrane carrier was prepared under the same conditions as in Experimental Example 1.
- Example 10 The fine structure of region A in Experimental Example 4 is divided into 16 sections each having a width of 1 mm in the direction perpendicular to the transport direction. As the region B is approached, the diameter and depth of the conical recess for each section are 250 ⁇ m to 14.7 ⁇ m. Further, the fine structure of the region C is further divided into 11 sections each having a width of 1 mm in the direction perpendicular to the transport direction. As the region B is approached, the diameter and depth of the conical concave portion for each section start from 250 ⁇ m. A membrane carrier was produced under the same conditions as in Experimental Example 1 except that the thickness decreased by 22 ⁇ m.
- Example 11 A membrane carrier was produced under the same conditions as in Experimental Example 1 except that the diameter of the microstructure in regions A and C in Experimental Example 4 was 50 ⁇ m and the diameter of the microstructure in Region B was 15 ⁇ m.
- a membrane carrier was produced under the same conditions as in Experimental Example 1 except that the diameter of the microstructure in regions A and C in Experimental Example 4 was 50 ⁇ m and the diameter of the microstructure in Region B was 300 ⁇ m.
- Example 13 A membrane carrier was produced under the same conditions as in Experimental Example 1 except that the diameter of the microstructure in regions A and C in Experimental Example 4 was 500 ⁇ m and the diameter of the microstructure in Region B was 300 ⁇ m.
- Example 14 A membrane carrier was produced under the same conditions as in Experimental Example 1, except that the microstructure of region B in Experimental Example 4 was a conical recess having a diameter of 200 ⁇ m and a depth of 100 ⁇ m.
- Example 15 A membrane carrier was produced under the same conditions as in Experimental Example 1 except that the microstructure of region B in Experimental Example 4 was a conical recess having a diameter of 500 ⁇ m and a depth of 100 ⁇ m.
- Example 16 The fine structure of region A in Experimental Example 4 is divided into 16 sections with a width of 1 mm in the direction perpendicular to the transport direction, and as the area B is approached, the diameter of the conical recess in each section increases from 100 ⁇ m to 10 ⁇ m. Furthermore, the fine structure of the region C is divided into 11 sections each having a width of 1 mm in the direction perpendicular to the transport direction, and the diameter of the conical recess for each section increases from 100 ⁇ m to 15 ⁇ m as the region B is approached.
- a membrane carrier was produced under the same conditions as in Experimental Example 1 except that the diameter of the conical recess in region B was 250 ⁇ m and the depth was 100 ⁇ m.
- Example 17 The fine structure of region A in Experimental Example 4 was divided into 16 sections with a width of 1 mm in the direction perpendicular to the transport direction, and as the region B was approached, the diameter of the conical concave portion for each section increased from 100 ⁇ m to 26.7 ⁇ m. Further, the fine structure of the region C is further divided into 11 sections each having a width of 1 mm, and the depth of the conical recess for each section increases from 100 ⁇ m to 40 ⁇ m as the region B is approached. A membrane carrier was produced under the same conditions as in Experimental Example 1 except that the diameter of the conical recess was 500 ⁇ m and the depth was 100 ⁇ m.
- Example 19 The membrane carrier under the same conditions as in Experimental Example 1 except that the fine structure in region B in Experimental Example 4 is a conical recess having a diameter of 100 ⁇ m and a depth of 100 ⁇ m, and the closest distance between the fine structures is 100 ⁇ m. Was made.
- the microstructure of regions A and C in Experimental Example 4 is a conical recess having a diameter of 500 ⁇ m and a depth of 500 ⁇ m
- the microstructure of region B is a conical recess having a diameter of 500 ⁇ m and a depth of 500 ⁇ m.
- a membrane carrier was prepared under the same conditions as in Experimental Example 1 except that the closest distance was set to 100 ⁇ m.
- the microstructure of regions A and C in Experimental Example 4 is a conical recess having a diameter of 500 ⁇ m and a depth of 500 ⁇ m
- the microstructure of region B is a conical recess having a diameter of 500 ⁇ m and a depth of 500 ⁇ m.
- a membrane carrier was produced under the same conditions as in Experimental Example 1 except that the closest distance was set to 500 ⁇ m.
- the microstructure in regions A and C in Experimental Example 4 is a conical recess having a diameter of 250 ⁇ m and a depth of 250 ⁇ m
- the microstructure in region B is a conical recess having a diameter of 250 ⁇ m and a depth of 250 ⁇ m.
- a membrane carrier was prepared under the same conditions as in Experimental Example 1 except that the closest distance was set to 100 ⁇ m.
- the microstructure in regions A and C in Experimental Example 4 is a conical recess having a diameter of 250 ⁇ m and a depth of 250 ⁇ m
- the microstructure in region B is a conical recess having a diameter of 250 ⁇ m and a depth of 250 ⁇ m.
- a membrane carrier was prepared under the same conditions as in Experimental Example 1 except that the closest distance was 250 ⁇ m.
- Example 24 The fine structure of region A in Experimental Example 4 is divided into 16 sections with a width of 1 mm in the direction perpendicular to the transport direction, and as the region B is approached, the closest distance between the microstructures in each section increases by 5 ⁇ m to 1.7 ⁇ m. Further, the fine structure in the region C is divided into 11 sections each having a width of 1 mm in the direction perpendicular to the transport direction, and as the region B is approached, the closest distance between the fine structures in each section is from 5 ⁇ m to 2.
- the conditions are the same as in Experimental Example 1 except that the area B increases in increments of 5 ⁇ m, the fine structure in the region B is 100 ⁇ m in diameter, a conical recess having a depth of 100 ⁇ m, and the closest distance between the fine structures is 30 ⁇ m.
- a membrane carrier was prepared.
- a purified anti-influenza A virus NP antibody (an antibody different from the above) and a purified anti-influenza B virus NP antibody (an antibody different from the above) were used.
- Blue latex particles (CM / BL Ceradine) having a particle size of 0.394 ⁇ m are covalently labeled to the anti-influenza A virus NP antibody, and the concentration of latex particles is 0 in Tris buffer containing sugar, surfactant and protein.
- An anti-A-type labeling body was prepared by suspending it at 0.025 w / v% and performing sonication to sufficiently disperse and float it.
- an anti-B-type labeled body obtained by labeling blue latex particles on an anti-type B influenza virus NP antibody was prepared.
- Anti-A-type labeling substance and anti-B-type labeling substance are mixed, and the amount of 50 ⁇ L per square centimeter is applied to 3 cm ⁇ 1 cm glass fiber (33GLASS NO.10539766, manufactured by Schleicher & Schuell) and dried well under warm air Thus, a marker pad was prepared. Thereafter, a marker pad was overlapped only at the end 2 mm of the region A of the membrane carrier prepared as in Experimental Examples 1 to 24, and cut into a strip with a width of 5 mm with a cutter to produce an integrated liquid sample inspection kit. .
- the liquid sample was prepared by diluting the influenza A virus A / Beijing / 32/92 (H3N2) 4 ⁇ 10 4 times using the specimen suspension attached to DENKA SEIKEN Quick Navi-Flu as a diluting solution. And two types of influenza virus B / Shangdong / 7/97 diluted 4 ⁇ 10 3 times.
- the movement of the liquid sample after dropping was recorded with a digital camera from directly above. From this moving image, the flow velocity of the liquid sample in each of the areas A to C was evaluated.
- the flow rate ratio is a ratio obtained by dividing the largest flow rate by the smallest flow rate. The results are shown in Tables 1 to 3.
- Determination of detection was performed by visually observing the presence or absence of a colored line in the detection zone (type A influenza virus detection unit and type B influenza virus detection unit) after 15 minutes.
- Tables 1 to 3 also show the results of comprehensive evaluation based on the following criteria for each experimental example.
- A determination time 4 minutes within an A-type 5 ⁇ 10 4 or more, capable judged by B-type at least 5 ⁇ 10 3 dilutions, or, in type A within 6 minutes determination time 7 ⁇ 10 4 or more
- a type B that can be determined at a dilution ratio of 7 ⁇ 10 3 or more.
- B Comprehensive evaluation does not apply to either A or C.
- C The determination time is 7 minutes or more, or the dilution ratio that can be determined is 4 ⁇ 10 4 or less for the A type, or 4 ⁇ 10 3 or less for the B type.
- the membrane carriers are manufactured so that the regions A to C have the closest distance between the microstructures (projections), the diameter of the projections, and the height of the projections as shown in Table 4. Except for this, the same procedure as in Experimental Example 1 was performed. Next, the particles to be used are changed from colored latex particles to fluorescent latex particles (micromer-F fluorescent latex particle material polystyrene core front), and an immunochromatographic reader (C11787, Hamamatsu Photonics) is used for the presence or absence of a colored line 4 minutes after the start of the test.
- fluorescent latex particles micromer-F fluorescent latex particle material polystyrene core front
- an immunochromatographic reader C11787, Hamamatsu Photonics
- the detection zone was prepared, the labeled body was set, and the detection evaluation was performed in the same manner as in Experimental Examples 1 to 24 except that the magnification (fluorescence determination limit magnification) that could not be read was obtained.
- the results are shown in Tables 4-5.
- Tables 4 to 5 also show the results of comprehensive evaluation based on the following criteria for each experimental example.
- A The limit magnification at which fluorescence can be determined 4 minutes after the start of the test is 3 ⁇ 10 6 or more for the A type and 3 ⁇ 10 5 or more for the B type.
- B Comprehensive evaluation does not apply to either A or C.
- C The limit magnification at which fluorescence can be determined 4 minutes after the start of the test is less than 2 ⁇ 10 6 for the A type and less than 2 ⁇ 10 5 for the B type.
- the liquid sample inspection kit according to the present embodiment can adjust the flow velocity by changing the height, bottom area, closest distance, and aspect ratio of the fine structure in the flow path. It was. As a result, it was shown that this embodiment can adjust the time until the sensitivity and coloration of the liquid sample inspection kit are stabilized, and can perform high-sensitivity and short-time inspection. Further, from the results of Tables 4 to 5, it was confirmed that the liquid sample inspection kit can perform highly sensitive inspection even when the particles are fluorescent latex particles.
- the liquid sample test kit of the present embodiment is useful for a disposable POCT reagent because a highly sensitive test can be performed in a short time at a low cost.
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Hematology (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Urology & Nephrology (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Clinical Laboratory Science (AREA)
- Biotechnology (AREA)
- Cell Biology (AREA)
- Microbiology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Plasma & Fusion (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
Description
(1)液体試料中の被検出物質を検出する検査キット用の膜担体であって、
液体試料を輸送できる少なくとも一つの流路を備え、
流路の底面に、液体試料を輸送するための毛細管作用を生じせしめる微細構造が設けられ、
微細構造が、液体試料の輸送方向に沿って変化するように設けられている、液体試料検査キット用膜担体。
(2)微細構造は、流路内における液体試料の流速が流路内で変化するように設けられている、(1)に記載の液体試料検査キット用膜担体。
(3)微細構造は、流路内における液体試料の、最も小さい流速と最も大きい流速との比が1以上10以下となるように設けられている、(1)又は(2)に記載の液体試料検査キット用膜担体。
(4)微細構造は、流路内における液体試料の最も小さい流速と最も大きい流速とが、いずれも0.30mm/s以上5.0mm/s以下となるように設けられている、(1)~(3)の何れかに記載の液体試料検査キット用膜担体。
(5)微細構造の高さが、流路内で10μm以上500μm以下である、(1)~(4)の何れかに記載の液体試料検査キット用膜担体。
(6)微細構造の底面積が、流路内で75μm2以上250000μm2以下である、(1)~(5)の何れかに記載の液体試料検査キット用膜担体。
(7)微細構造同士の最近接距離が、流路内で500μm以下である、(1)~(6)の何れかに記載の液体試料検査キット用膜担体。
(8)微細構造のアスペクト比が、0.1以上2.0以下である(1)~(7)の何れかに記載の液体試料検査キット用膜担体。
(1)~(8)の何れかに記載された液体試料検査キット用膜担体を備え、
膜担体は、液体試料中の被検出物質を検出するための検知ゾーンを有し、
検知ゾーンにおいて被検出物質が検出された際に、検出されたことが光学的手法で確認可能な色変化が生じる、液体試料検査キット。
(10)液体試料中の記被検出物質と特異的に反応する抗体又はその抗原結合性断片を有する標識体が、被検出物質と反応し得るように液体試料検査キットの少なくとも一部に設けられており、
上記色変化は、被検出物質と結合した標識体によって生じる、(9)に記載の液体試料検査キット。
(11)上記標識体が、着色ラテックス粒子又は蛍光ラテックス粒子に前記抗体又は前記抗原結合性断片が結合した粒子である、(10)に記載の液体試料検査キット。
(12)検知ゾーンには、被検出物質を検出する検出物質が固定されており、
上記色変化は、標識体が前記検出物質により検知ゾーンに保持されて呈色することによって生じる、(10)又は(11)に記載の液体試料検査キット。
(13)(9)~(12)の何れかに記載された液体試料検査キットの製造方法であって、
検知ゾーンに、被検出物質を検知ゾーンに保持することによって上記色変化を生じせしめる検出物質を固定する工程を備える、液体試料検査キットの製造方法。
(14)(9)~(12)の何れかに記載された液体試料検査キットを用いる、液体試料の検査方法であって、
前記液体試料と、前記液体試料中の被検出物質と特異的に結合する標識体とを混合して混合液体試料を調製し、前記被検出物質と前記標識体とを互いに結合させる工程と、
前記混合液体試料を前記膜担体に設けられた滴下ゾーンに滴下する工程と、
前記微細構造により、前記混合液体試料を前記滴下ゾーンから前記検知ゾーンへ輸送する工程と、
前記検知ゾーンにおける色変化を検知する工程と、を備える、液体試料の検査方法。
<モールドの準備>
モールドは、レーザー加工及び機械切削によって作製した。図10に微細構造を作成するためのモールド20を示す。図10に示すモールド20は、複数の領域(第一の領域A、第二の領域B及び第三の領域C)を有し、その表面には、図8に示す微細構造(凸部)に対応する凹部が形成されている(図示せず)。モールド20はアルミ合金A5052製である。このモールド(金型)の中心部には、30mm×30mmの範囲に微細加工が施されている。モールド20の加工範囲のうち、特定の一辺(20A)から加工範囲内側に16mm分の領域(領域A)と、特定の一辺の対辺(20B)から加工範囲内側に11mm分の領域(領域C)には、径が10μm、深さ(表では高さということもある)10μmの円錐型の凹部が、微細構造同士の最近接距離(5A、5C)を5μmとして図8のような三角配列形式で並んでいる。上記加工範囲のそれ以外の範囲(領域B)では、径が10μm、深さ10μmの円錐型の凹部が、領域Bにおける微細構造の最近接微細構造間距離最近接距離(5B)を5μmとして図8のような三角配列形式(千鳥状)で並んでいる。なお、領域A、B間及び領域B、C間境界での緩衝距離5Dはどちらも5μmである。
上記のモールドの凹凸面に対し、転写した際のモールドと熱可塑性プラスチックの剥離を容易かつ確実にするため、離型処理を施した。離型処理は、ダイキン工業社製オプツールHD-2100THに約1分間浸し、乾燥させたのち、一晩静置することで行った。
上記のようにして得られたモールドを用いて、熱可塑性プラスチックに微細構造を転写した。熱可塑性プラスチックとしては、ポリスチレン(デンカ株式会社製デンカスチレンシート、膜厚300μm)を用いた。加工方法として熱インプリントを用い、装置はSCIVAX社製X-300を用いた。成形温度は120℃、印加圧力は5.5MPaとし、10分間転写を行った。転写後は、圧力を印加したまま熱可塑性プラスチックとモールドを80℃まで冷却し、その後圧力を除くことで、一端側から順に領域A、領域B及び領域Cを有する膜担体を作製した。
実験例1における領域A、B及びCの微細構造を、径が100μm、深さ100μmの円錐型の凹部としたこと以外は、実験例1と同様の条件で膜担体を作製した。
実験例1における領域A、B及びCの微細構造を、径が500μm、深さ500μmの円錐型の凹部としたこと以外は、実験例1と同様の条件で膜担体を作製した。
実験例1における領域A及びCの微細構造を、径が100μm、深さ100μmの円錐型の凹部とし、領域Bの微細構造を径が30μm、深さ30μmの円錐型の凹部としたこと以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造を、径が250μm、深さ250μmの円錐型の凹部とし、領域Bの微細構造を径が30μm、深さ30μmの円錐型の凹部としたこと以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造を、径が250μm、深さ250μmの円錐型の凹部とし、領域Bの微細構造を径が10μm、深さ10μmの円錐型の凹部としたこと以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造を、径が100μm、深さ100μmの円錐型の凹部とし、領域Bの微細構造を径が10μm、深さ10μmの円錐型の凹部としたこと以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造を、径が500μm、深さ500μmの円錐型の凹部とし、領域Bの微細構造を径が10μm、深さ10μmの円錐型の凹部とした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域Aの微細構造を輸送方向と垂直方向に1mm幅ずつ16区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの円錐型凹部の径及び深さが100μmから4.7μmずつ減少していく(つまり、輸送方向に沿って、100μmから4.7μmずつ減少していく)ものとし、更に領域Cの微細構造を輸送方向と垂直方向に1mm幅ずつ11区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの円錐型凹部の径及び深さが100μmから7μmずつ減少していく(つまり、輸送方向に沿って、100μmから7μmずつ増大していく)ものとしたこと以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域Aの微細構造を輸送方向と垂直方向に1mm幅ずつ16区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの円錐型凹部の径及び深さが250μmから14.7μmずつ減少していくものとし、更に領域Cの微細構造を輸送方向と垂直方向に1mm幅ずつ11区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの円錐型凹部の径及び深さが250μmから22μmずつ減少していくものとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造の径を50μmとし、領域Bの微細構造の径を15μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造の径を50μmとし、領域Bの微細構造の径を300μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造の径を500μmとし、領域Bの微細構造の径を300μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域Bの微細構造を径が200μm、深さ100μmの円錐型の凹部とした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域Bの微細構造を径が500μm、深さ100μmの円錐型の凹部とした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域Aの微細構造を輸送方向と垂直方向に1mm幅ずつ16区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの円錐型凹部の径が100μmから10μmずつ増加していくものとし、更に領域Cの微細構造を輸送方向と垂直方向に1mm幅ずつ11区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの円錐型凹部の径が100μmから15μmずつ増加していくものとし、領域Bの円錐型凹部の径を250μm、深さを100μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域Aの微細構造を輸送方向と垂直方向に1mm幅ずつ16区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの円錐型凹部の径が100μmから26.7μmずつ増加していくものとし、更に領域Cの微細構造を1mm幅ずつ11区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの円錐型凹部の深さが100μmから40μmずつ増加していくものとし、領域Bの円錐型凹部の径を500μm、深さを100μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域Bの微細構造を、径が100μm、深さ100μmの円錐型の凹部とし、更に微細構造同士の最近接距離を30μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域Bの微細構造を、径が100μm、深さ100μmの円錐型の凹部とし、更に微細構造同士の最近接距離を100μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造を、径が500μm、深さ500μmの円錐型の凹部とし、領域Bの微細構造を径が500μm、深さ500μmの円錐型の凹部とし更に微細構造同士の最近接距離を100μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造を、径が500μm、深さ500μmの円錐型の凹部とし、領域Bの微細構造を径が500μm、深さ500μmの円錐型の凹部とし更に微細構造同士の最近接距離を500μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造を、径が250μm、深さ250μmの円錐型の凹部とし、領域Bの微細構造を径が250μm、深さ250μmの円錐型の凹部とし更に微細構造同士の最近接距離を100μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域A及びCの微細構造を、径が250μm、深さ250μmの円錐型の凹部とし、領域Bの微細構造を径が250μm、深さ250μmの円錐型の凹部とし更に微細構造同士の最近接距離を250μmとした以外は、実験例1と同様の条件で膜担体を作製した。
実験例4における領域Aの微細構造を輸送方向と垂直方向に1mm幅ずつ16区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの微細構造同士の最近接距離が5μmから1.7μmずつ増加していくものとし、更に領域Cの微細構造を輸送方向と垂直方向に1mm幅ずつ11区画に分割し、領域Bに近づくにつれそれぞれの区画ごとの微細構造同士の最近接距離が5μmから2.5μmずつ増加していくものとし、更に領域Bの微細構造を径が100μm、深さ100μmの円錐型の凹部、微細構造同士の最近接距離を30μmとした以外は、実験例1と同様の条件で膜担体を作製した。
上記のように作製した膜担体の領域Bの構造を転写した部分のみにUV処理を施した。その部分に、抗A型インフルエンザNP抗体浮遊液、並びに抗B型インフルエンザNP抗体浮遊液を各々線幅1mmで塗布し(塗布量は各3μL)、温風下で良く乾燥させ、検出物質を固定化した。
精製抗A型インフルエンザウイルスNP抗体(上記と別の抗体)及び精製抗B型インフルエンザウイルスNP抗体(上記と別の抗体)を使用した。抗A型インフルエンザウイルスNP抗体に粒子径0.394μmの青色ラテックス粒子(CM/BL セラダイン製)を共有結合で標識し、糖、界面活性剤及びタンパク質を含むトリス緩衝液にラテックス粒子の濃度が0.025w/v%になるように懸濁し、ソニケーションを行って充分に分散浮遊させた抗A型標識体を調製した。同様に抗B型インフルエンザウイルスNP抗体に青色ラテックス粒子を標識した抗B型標識体を調製した。
上記のように作製された液体試料検査キットの端部の標識体パッド上(滴下ゾーン)に、液体試料を100μL滴下した。液体サンプルは、希釈溶液としてデンカ生研社製クイックナビ―Fluに付属している検体浮遊液を用い、A型インフルエンザウイルス A/Beijing/32/92(H3N2)を4×104倍に希釈したものと、B型インフルエンザウイルス B/Shangdong/7/97を4×103倍に希釈したものの2種を用いた。滴下後の液体試料の移動する様子を直上からデジタルカメラで録画した。この動画から、領域A~Cそれぞれにおける液体試料の移動する流速を評価した。流速は、A型インフルエンザウイルスを希釈したものの流速と、B型インフルエンザウイルスを希釈したものの流速との、平均値を平均流速として用いた。また、流速比は、最も大きい流速を最も小さい流速で割った際の比である。この結果を表1~3に示した。
濃さが安定するまでの時間は、A型の濃さが安定するまでの時間と、B型の濃さが安定するまでの時間との平均値を、濃さが安定するまでの時間として用いた。
A:判定時間4分以内にA型で5×104以上、B型で5×103以上の希釈倍率で判定可能なもの、又は、判定時間6分以内にA型で7×104以上、B型で7×103以上の希釈倍率で判定可能なもの。
B:総合評価がA、Cいずれにもあてはまらないもの。
C:判定時間が7分以上のもの、又は、判定可能な希釈倍率がA型で4×104以下、又は、B型で4×103以下のもの。
実験例25~45における膜担体の作製は、領域A~Cにおいて、表4に示すとおりの微細構造(凸部)同士の最近接距離、凸部の径及び凸部の高さとなるようにすること以外は、実験例1と同様にして行った。
次いで、用いる粒子を着色ラテックス粒子から蛍光ラテックス粒子(micromer-F 蛍光ラテックス粒子 材料ポリスチレン コアフロント社製)に変更し、試験開始後4分後に着色ラインの有無をイムノクロマトリーダ(C11787 浜松ホトニクス社製)で読み取りできなくなる倍率(蛍光判定限界倍率)を求めたこと以外は、実験例1~24と同様にして、検知ゾーンの作製、標識体のセット及び検知評価を行った。結果を表4~5に示した。
A:試験開始後4分での蛍光判定可能な限界倍率が、A型で3×106以上、B型で3×105以上であるもの。
B:総合評価がA、Cいずれにもあてはまらないもの。
C:試験開始後4分での蛍光判定可能な限界倍率が、A型で2×106未満、B型で2×105未満であるもの。
3,3a,13 微細構造が設けられた膜担体
3x,13x 滴下ゾーン
3y,13y 検知ゾーン
4,4a,4b,4c,4d 凸部の底面における代表長さ(凸部の底面の径)
4A 微細構造が変化する箇所での前方(輸送方向の上流側)の底面の代表長さ(第一の領域Aにおける凸部の底面の径)
4B 微細構造が変化する箇所での後方の底面の代表長さ(第二の領域Bにおける凸部の底面の径)
4C 微細構造が変化する箇所での後方の底面の代表長さ(第三の領域Cにおける凸部の底面の径)
5 最近接微細構造間距離
5A 微細構造が変化する箇所での前方の最近接微細構造間距離(第一の領域Aにおける微細構造(凸部)同士の最近接微細構造間距離)
5B 微細構造が変化する箇所での後方の最近接微細構造間距離(第二の領域Bにおける微細構造(凸部)同士の最近接微細構造間距離)
5C 微細構造が変化する箇所での後方の最近接微細構造間距離(第三の領域Cにおける微細構造(凸部)同士の最近接微細構造間距離)
5D 緩衝距離(微細構造が変化する箇所での緩衝距離)
6,6a,6b,6c,6d 凸部の高さ
7,7a,7b,7c,7d 微細構造
8,8a,8b,8c,8d 凸部
9 平坦部
10,10a,10b,10c,10d 凸部の底面
18 液体試料用の検査キット
18a 筐体
18b 第一開口部
18c 第二開口部
20 モールド
20A 特定の一辺
20B 特定の一辺の対辺
A 第一の領域
B 第二の領域
C 第三の領域
d 液体試料の流れる方向(輸送方向)
Claims (14)
- 液体試料中の被検出物質を検出する検査キット用の膜担体であって、
前記液体試料を輸送できる少なくとも一つの流路を備え、
前記流路の底面に、前記液体試料を輸送するための毛細管作用を生じせしめる微細構造が設けられ、
前記微細構造が、前記液体試料の輸送方向に沿って変化するように設けられている、液体試料検査キット用膜担体。 - 前記微細構造は、前記流路内における前記液体試料の流速が前記流路内で変化するように設けられている、請求項1に記載の液体試料検査キット用膜担体。
- 前記微細構造は、前記流路内における前記液体試料の、最も小さい流速と最も大きい流速との比が1以上10以下となるように設けられている、請求項1又は2に記載の液体試料検査キット用膜担体。
- 前記微細構造は、前記流路内における前記液体試料の最も小さい流速と最も大きい流速とが、いずれも0.30mm/s以上5.0mm/s以下となるように設けられている、請求項1~3の何れか一項に記載の液体試料検査キット用膜担体。
- 前記微細構造の高さが、前記流路内で10μm以上500μm以下である、請求項1~4の何れか一項に記載の液体試料検査キット用膜担体。
- 前記微細構造の底面積が、前記流路内で75μm2以上250000μm2以下である、請求項1~5の何れか一項に記載の液体試料検査キット用膜担体。
- 前記微細構造同士の最近接距離が、前記流路内で500μm以下である、請求項1~6の何れか一項に記載の液体試料検査キット用膜担体。
- 前記微細構造のアスペクト比が、0.1以上2.0以下である、請求項1~7の何れか一項に記載の液体試料検査キット用膜担体。
- 液体試料中の被検出物質を検出する液体試料検査キットであって、
請求項1~8の何れか一項に記載された液体試料検査キット用膜担体を備え、
前記膜担体は、前記液体試料中の前記被検出物質を検出する検知ゾーンを有し、
前記検知ゾーンにおいて、前記被検出物質が検出された際に色変化が生じる、液体試料検査キット。 - 前記液体試料中の前記被検出物質と特異的に反応する抗体又はその抗原結合性断片を有する標識体が、前記被検出物質と反応し得るように前記液体試料検査キットの少なくとも一部に設けられており、
前記色変化は、前記被検出物質と結合した前記標識体によって生じる、請求項9に記載の液体試料検査キット。 - 前記標識体が、着色ラテックス粒子又は蛍光ラテックス粒子に前記抗体又は前記抗原結合性断片が結合した粒子である、請求項10に記載の液体試料検査キット。
- 前記検知ゾーンには、前記被検出物質を検出する検出物質が固定されており、
前記色変化は、前記標識体が前記検出物質により前記検知ゾーンに保持されて呈色することによって生じる、請求項10又は11に記載の液体試料検査キット。 - 請求項9~12の何れか一項に記載された液体試料検査キットの製造方法であって、
前記検知ゾーンに、前記被検出物質を前記検知ゾーンに保持することによって前記色変化を生じせしめる検出物質を固定する工程を備える、液体試料検査キットの製造方法。 - 請求項9~12の何れか一項に記載された液体試料検査キットを用いる、液体試料の検査方法であって、
前記液体試料と、前記液体試料中の被検出物質と特異的に結合する標識体とを混合して混合液体試料を調製し、前記被検出物質と前記標識体とを互いに結合させる工程と、
前記混合液体試料を前記膜担体に設けられた滴下ゾーンに滴下する工程と、
前記微細構造により、前記混合液体試料を前記滴下ゾーンから前記検知ゾーンへ輸送する工程と、
前記検知ゾーンにおける色変化を検知する工程と、を備える、液体試料の検査方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018523928A JP6849678B2 (ja) | 2016-06-14 | 2017-06-13 | 液体試料検査キット用膜担体、液体試料検査キット及び液体試料検査キットの製造方法 |
US16/309,877 US10994271B2 (en) | 2016-06-14 | 2017-06-13 | Membrane carrier for liquid sample test kit, liquid sample test kit, and method for producing liquid sample test kit |
KR1020197000999A KR102394394B1 (ko) | 2016-06-14 | 2017-06-13 | 액체 시료 검사 키트용 막 담체, 액체 시료 검사 키트 및 액체 시료 검사 키트의 제조 방법 |
EP17813302.1A EP3470842B1 (en) | 2016-06-14 | 2017-06-13 | Membrane carrier for liquid sample test kit, liquid sample test kit, and method for producing liquid sample test kit |
CN201780036987.4A CN109313187B (zh) | 2016-06-14 | 2017-06-13 | 液体试样检测试剂盒用膜载体、液体试样检测试剂盒和液体试样检测试剂盒的制造方法 |
ES17813302T ES2877797T3 (es) | 2016-06-14 | 2017-06-13 | Portador de membrana para el kit de prueba de muestra líquida, kit de prueba de muestra líquida y método para producir el kit de prueba de muestra líquida |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016118027 | 2016-06-14 | ||
JP2016-118027 | 2016-06-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017217406A1 true WO2017217406A1 (ja) | 2017-12-21 |
Family
ID=60663255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/021801 WO2017217406A1 (ja) | 2016-06-14 | 2017-06-13 | 液体試料検査キット用膜担体、液体試料検査キット及び液体試料検査キットの製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US10994271B2 (ja) |
EP (1) | EP3470842B1 (ja) |
JP (1) | JP6849678B2 (ja) |
KR (1) | KR102394394B1 (ja) |
CN (1) | CN109313187B (ja) |
ES (1) | ES2877797T3 (ja) |
WO (1) | WO2017217406A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112740040A (zh) * | 2018-09-25 | 2021-04-30 | 电化株式会社 | 检验试剂盒用膜载体及检验试剂盒 |
US11162938B2 (en) | 2017-03-28 | 2021-11-02 | Denka Company Limited | Membrane carrier, kit for testing liquid sample using same, and manufacturing method thereof |
WO2021220956A1 (ja) * | 2020-04-28 | 2021-11-04 | デンカ株式会社 | 検出装置及び検出方法 |
WO2022118727A1 (ja) * | 2020-12-01 | 2022-06-09 | デンカ株式会社 | 検出装置 |
US11385227B2 (en) | 2017-03-28 | 2022-07-12 | Denka Company Limited | Membrane carrier and kit for testing liquid sample using same |
EP3971568A4 (en) * | 2019-05-15 | 2022-11-30 | Denka Company Limited | BACKING FILM AND INSPECTION KIT |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11333607B2 (en) * | 2018-10-02 | 2022-05-17 | Electronics And Telecommunications Research Institute | Fluorescent signal detection apparatus using diagnostic kit |
CN109541248B (zh) * | 2018-12-11 | 2023-09-15 | 苏州英赛斯智能科技有限公司 | 一种流动注射反应池装置和用于此装置的换向流体单元 |
KR102461334B1 (ko) * | 2020-02-14 | 2022-10-28 | 광운대학교 산학협력단 | 유속 조절부를 구비하는 상부 케이스 및 이를 구비한 현장용 진단 키트 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090111197A1 (en) * | 2005-03-29 | 2009-04-30 | Inverness Medical Switzerland Gmbh | Hybrid device |
WO2009096529A1 (ja) * | 2008-02-01 | 2009-08-06 | Nippon Telegraph And Telephone Corporation | フローセル |
JP2013053897A (ja) * | 2011-09-02 | 2013-03-21 | Seiko Epson Corp | 液体吸収部材及び生体反応検出システム |
JP2013148586A (ja) * | 2012-01-20 | 2013-08-01 | Ortho-Clinical Diagnostics Inc | アッセイ装置を通じた流体流の制御 |
JP2014098715A (ja) * | 2014-02-12 | 2014-05-29 | Denka Seiken Co Ltd | 着色ラテックス粒子を用いるメンブレンアッセイ法およびキット |
WO2016051974A1 (ja) * | 2014-10-02 | 2016-04-07 | ソニー株式会社 | 標的物質測定キット、標的物質測定システム、イムノクロマト測定キット及びイムノクロマト測定システム |
Family Cites Families (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5147011B1 (ja) | 1970-12-28 | 1976-12-13 | ||
JPS513075A (en) | 1974-06-28 | 1976-01-12 | Inoue Japax Res | Waiya katsuteingusochi |
JPS5233757A (en) | 1975-09-10 | 1977-03-15 | Ikegami Tsushinki Co Ltd | Automatic compensation circuit of balance in a differential transformer |
HU196394B (en) | 1986-06-27 | 1988-11-28 | Richter Gedeon Vegyeszet | Process for preparing 2-halogenated ergoline derivatives |
US6767510B1 (en) * | 1992-05-21 | 2004-07-27 | Biosite, Inc. | Diagnostic devices and apparatus for the controlled movement of reagents without membranes |
US5458852A (en) | 1992-05-21 | 1995-10-17 | Biosite Diagnostics, Inc. | Diagnostic devices for the controlled movement of reagents without membranes |
JP2588174Y2 (ja) | 1993-04-16 | 1999-01-06 | 株式会社三星製作所 | 織機の耳糸ボビンホルダ装置 |
US5719034A (en) * | 1995-03-27 | 1998-02-17 | Lifescan, Inc. | Chemical timer for a visual test strip |
JP3652029B2 (ja) | 1996-10-16 | 2005-05-25 | 積水化学工業株式会社 | 高感度免疫測定法 |
JP3513075B2 (ja) | 2000-04-05 | 2004-03-31 | デンカ生研株式会社 | 免疫測定法及びそのための試薬 |
SE0201738D0 (sv) | 2002-06-07 | 2002-06-07 | Aamic Ab | Micro-fluid structures |
JP2005077301A (ja) | 2003-09-02 | 2005-03-24 | Asahi Kasei Corp | 免疫学的検出担体および測定法 |
JP4972295B2 (ja) | 2005-07-12 | 2012-07-11 | ローム株式会社 | 免疫分析方法及びバイオチップ |
JP2009241375A (ja) | 2008-03-31 | 2009-10-22 | Toray Ind Inc | 熱プリントラミネーション用ポリプロピレンフィルム |
GB0811132D0 (en) | 2008-06-18 | 2008-07-23 | Secr Defence | Detection device |
JP5147011B2 (ja) | 2008-08-22 | 2013-02-20 | 国立大学法人北海道大学 | 血清脂質の測定方法及び測定装置 |
WO2010043075A1 (zh) | 2008-10-17 | 2010-04-22 | 红电医学科技股份有限公司 | 流体检测试片及其测试方法 |
US9205396B2 (en) | 2008-11-26 | 2015-12-08 | Sumitomo Bakelite Co., Ltd. | Microfluidic device |
US20100145294A1 (en) * | 2008-12-05 | 2010-06-10 | Xuedong Song | Three-dimensional vertical hydration/dehydration sensor |
US8377643B2 (en) | 2009-03-16 | 2013-02-19 | Abaxis, Inc. | Split flow device for analyses of specific-binding partners |
EP2421649B1 (en) | 2009-04-23 | 2018-01-24 | Dublin City University | A lateral flow assay device for coagulation monitoring and method thereof |
CA2780648C (en) | 2009-11-17 | 2015-09-15 | Asahi Kasei Fibers Corporation | Organic colored microparticles, diagnostic reagent kit containing the same, and in vitro diagnosis method |
JP2012002806A (ja) | 2010-05-19 | 2012-01-05 | Nanbu Plastics Co Ltd | 親水性基板のパッケージおよびイムノクロマト用試験具 |
WO2011149864A1 (en) | 2010-05-24 | 2011-12-01 | Web Industries, Inc. | Microfluidic surfaces and devices |
US8623292B2 (en) * | 2010-08-17 | 2014-01-07 | Kimberly-Clark Worldwide, Inc. | Dehydration sensors with ion-responsive and charged polymeric surfactants |
JP5799395B2 (ja) | 2011-07-28 | 2015-10-28 | 富山県 | 血液中の浮遊癌細胞を捕捉できるマイクロチップ |
JP2013113633A (ja) | 2011-11-25 | 2013-06-10 | Nanbu Plastics Co Ltd | ストリップ |
JP5841433B2 (ja) * | 2012-01-11 | 2016-01-13 | 日東電工株式会社 | 口腔内フィルム状基剤及び製剤 |
JP6008670B2 (ja) | 2012-09-21 | 2016-10-19 | 東洋濾紙株式会社 | イムノクロマトグラフ試験ストリップ用メンブレン、試験ストリップ及び検査方法 |
JP6320711B2 (ja) | 2012-09-28 | 2018-05-09 | 積水メディカル株式会社 | 油溶性色素含有診断薬用着色ラテックス粒子 |
JP2016011943A (ja) | 2013-12-24 | 2016-01-21 | 株式会社リコー | 分析デバイス |
JP6726104B2 (ja) | 2014-12-15 | 2020-07-22 | デンカ株式会社 | 液体試料検査キット、及び液体試料検査キットの作製方法 |
JP6671892B2 (ja) | 2015-08-21 | 2020-03-25 | 国立大学法人千葉大学 | イムノクロマト用複合粒子とその製造方法 |
WO2018181549A1 (ja) | 2017-03-28 | 2018-10-04 | デンカ株式会社 | 膜担体、並びにそれを用いた液体試料検査キット及びその製造方法 |
KR102547418B1 (ko) | 2017-03-28 | 2023-06-23 | 덴카 주식회사 | 막 담체 및 이를 이용한 액체 시료 검사 키트 |
-
2017
- 2017-06-13 EP EP17813302.1A patent/EP3470842B1/en active Active
- 2017-06-13 JP JP2018523928A patent/JP6849678B2/ja active Active
- 2017-06-13 US US16/309,877 patent/US10994271B2/en active Active
- 2017-06-13 WO PCT/JP2017/021801 patent/WO2017217406A1/ja unknown
- 2017-06-13 ES ES17813302T patent/ES2877797T3/es active Active
- 2017-06-13 KR KR1020197000999A patent/KR102394394B1/ko active IP Right Grant
- 2017-06-13 CN CN201780036987.4A patent/CN109313187B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090111197A1 (en) * | 2005-03-29 | 2009-04-30 | Inverness Medical Switzerland Gmbh | Hybrid device |
WO2009096529A1 (ja) * | 2008-02-01 | 2009-08-06 | Nippon Telegraph And Telephone Corporation | フローセル |
JP2013053897A (ja) * | 2011-09-02 | 2013-03-21 | Seiko Epson Corp | 液体吸収部材及び生体反応検出システム |
JP2013148586A (ja) * | 2012-01-20 | 2013-08-01 | Ortho-Clinical Diagnostics Inc | アッセイ装置を通じた流体流の制御 |
JP2014098715A (ja) * | 2014-02-12 | 2014-05-29 | Denka Seiken Co Ltd | 着色ラテックス粒子を用いるメンブレンアッセイ法およびキット |
WO2016051974A1 (ja) * | 2014-10-02 | 2016-04-07 | ソニー株式会社 | 標的物質測定キット、標的物質測定システム、イムノクロマト測定キット及びイムノクロマト測定システム |
Non-Patent Citations (2)
Title |
---|
RIVAS, LOURDES ET AL.: "Improving sensitivity of gold nanoparticle-based lateral flow assays by using wax-printed pillars as delay barriers of microfluidics", LAB ON A CHIP, vol. 14, no. 22, 2014, pages 4406 - 4414, XP055449438 * |
See also references of EP3470842A4 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11162938B2 (en) | 2017-03-28 | 2021-11-02 | Denka Company Limited | Membrane carrier, kit for testing liquid sample using same, and manufacturing method thereof |
US11385227B2 (en) | 2017-03-28 | 2022-07-12 | Denka Company Limited | Membrane carrier and kit for testing liquid sample using same |
CN112740040A (zh) * | 2018-09-25 | 2021-04-30 | 电化株式会社 | 检验试剂盒用膜载体及检验试剂盒 |
KR20210049877A (ko) * | 2018-09-25 | 2021-05-06 | 덴카 주식회사 | 검사 키트용 막 담체 및 검사 키트 |
EP3859335A4 (en) * | 2018-09-25 | 2021-12-08 | Denka Company Limited | MEMBRANE SUPPORT FOR TEST KIT AND TEST KIT |
KR102581959B1 (ko) * | 2018-09-25 | 2023-09-22 | 덴카 주식회사 | 검사 키트용 막 담체 및 검사 키트 |
JP7498114B2 (ja) | 2018-09-25 | 2024-06-11 | デンカ株式会社 | 検査キット用膜担体および検査キット |
EP3971568A4 (en) * | 2019-05-15 | 2022-11-30 | Denka Company Limited | BACKING FILM AND INSPECTION KIT |
WO2021220956A1 (ja) * | 2020-04-28 | 2021-11-04 | デンカ株式会社 | 検出装置及び検出方法 |
WO2022118727A1 (ja) * | 2020-12-01 | 2022-06-09 | デンカ株式会社 | 検出装置 |
Also Published As
Publication number | Publication date |
---|---|
EP3470842B1 (en) | 2021-05-12 |
JP6849678B2 (ja) | 2021-03-24 |
CN109313187B (zh) | 2022-05-06 |
CN109313187A (zh) | 2019-02-05 |
EP3470842A1 (en) | 2019-04-17 |
EP3470842A4 (en) | 2020-02-26 |
US20190329246A1 (en) | 2019-10-31 |
US10994271B2 (en) | 2021-05-04 |
JPWO2017217406A1 (ja) | 2019-04-11 |
KR20190017952A (ko) | 2019-02-20 |
ES2877797T3 (es) | 2021-11-17 |
KR102394394B1 (ko) | 2022-05-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017217406A1 (ja) | 液体試料検査キット用膜担体、液体試料検査キット及び液体試料検査キットの製造方法 | |
JP7306998B2 (ja) | 液体試料検査キット用膜担体、液体試料検査キット、液体試料検査キットの製造方法、液体試料の検査方法及び膜担体 | |
JP7069125B2 (ja) | 膜担体及びそれを用いた液体試料検査キット | |
JP6978489B2 (ja) | 膜担体、並びにそれを用いた液体試料検査キット及びその製造方法 | |
JP7267381B2 (ja) | 液体試料検査キット用膜担体、液体試料検査キット及び膜担体 | |
KR20210142702A (ko) | 막 담체 및 검사 키트 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2018523928 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17813302 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20197000999 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2017813302 Country of ref document: EP Effective date: 20190114 |