WO2023147977A1 - Dispositif microfluidique comprenant des organes de rétention d'objets au sein de pièges capillaires - Google Patents
Dispositif microfluidique comprenant des organes de rétention d'objets au sein de pièges capillaires Download PDFInfo
- Publication number
- WO2023147977A1 WO2023147977A1 PCT/EP2023/050684 EP2023050684W WO2023147977A1 WO 2023147977 A1 WO2023147977 A1 WO 2023147977A1 EP 2023050684 W EP2023050684 W EP 2023050684W WO 2023147977 A1 WO2023147977 A1 WO 2023147977A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- microchannel
- capillary
- microcavity
- traps
- objects
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 230000014759 maintenance of location Effects 0.000 claims description 57
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 17
- 238000004458 analytical method Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
- B01L3/502715—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 interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
-
- 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
-
- 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
- B01L3/502761—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 specially adapted for handling suspended solids or molecules independently from the bulk fluid flow, e.g. for trapping or sorting beads, for physically stretching molecules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/52—Supports specially adapted for flat sample carriers, e.g. for plates, slides, chips
- B01L9/527—Supports specially adapted for flat sample carriers, e.g. for plates, slides, chips for microfluidic devices, e.g. used for lab-on-a-chip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/02—Adapting objects or devices to another
- B01L2200/026—Fluid interfacing between devices or objects, e.g. connectors, inlet details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0647—Handling flowable solids, e.g. microscopic beads, cells, particles
- B01L2200/0668—Trapping microscopic beads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/06—Auxiliary integrated devices, integrated components
- B01L2300/0627—Sensor or part of a sensor is integrated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0832—Geometry, shape and general structure cylindrical, tube shaped
- B01L2300/0838—Capillaries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
- B01L2300/0883—Serpentine channels
-
- 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
- B01L2400/06—Valves, specific forms thereof
- B01L2400/0688—Valves, specific forms thereof surface tension valves, capillary stop, capillary break
-
- 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
- B01L2400/086—Passive control of flow resistance using baffles or other fixed flow obstructions
Definitions
- Microfluidic device comprising organs for retaining objects within capillary traps
- the invention relates to the field of microfluidics and “lab-on-chip” systems.
- the invention is of particular interest, in no way limiting, for the study of biological macromolecules by crystallography.
- Microfluidics can be defined as the study of flows and their implementation in networks of microchannels whose dimensions are of the order of a micrometer. At this scale, the forces of capillarity predominate over the forces of gravity.
- a microfluidic device comprises capillary traps designed to trap objects such as crystals or biological cells with a view to their analysis. These traps typically consist of cavities formed along microchannels within which a liquid is moved, the objects being suspended in this liquid.
- the introduction of the liquid into the microchannels is typically carried out using an injection tube which is disconnected after filling of the device, resulting in a phenomenon of aspiration of the liquid which tends to cause the objects to come out of the capillary traps.
- the subject of the invention is a microfluidic device comprising: - a support comprising a microchannel configured to allow a flow of a fluid from an inlet of the microchannel to an outlet of the microchannel,
- each of the capillary traps comprising a microcavity formed on a wall of the microchannel so as to open into the microchannel in order to trap one or more suspended objects in the fluid when that -this flows into the microchannel.
- each of the capillary traps comprises a retention member extending in the microchannel facing the microcavity of this capillary trap.
- Such a retention member is thus configured to allow retention of at least one of the objects previously trapped in this microcavity in the event of displacement of this object from this microcavity towards this retention member.
- the invention thus makes it possible to reduce the escape of objects trapped in the micro-cavities in particular when the fluid changes direction of circulation, for example during the withdrawal of an injection tube.
- the invention makes it possible in particular to improve the reproducibility of the analysis results.
- a microchannel is a channel whose diameter or largest transverse dimension is of the order of a micrometer, that is to say a dimension less than 1 mm and greater than or equal to 1000 nm.
- a microcavity is a cavity whose diameter or largest dimension is of the order of a micrometer, that is to say a dimension less than 1 mm and greater than or equal to 1000 nm.
- the objects can be crystals, cells or even particles whose size is also of the order of a micrometer, that is to say less than 1 mm and greater than or equal to 1000 nm
- the fluid can be liquid or gaseous.
- the retention member for each of the capillary traps, the retention member comprises a retention surface.
- the retention surface is a surface of the retention member which extends opposite the microcavity of the corresponding capillary trap.
- the retention surface is preferably concave or hollow.
- the retention surface and/or more generally the retention member can have an asymmetrical profile.
- the retention member for each of the capillary traps, comprises a first edge delimiting an upstream end of the retention surface and a second edge delimiting a downstream end of the retention surface, the first edge being located at a first distance from the microcavity of this capillary trap, the second edge being located at a second distance from the microcavity of this capillary trap, the first distance being greater than the second distance.
- upstream and downstream are defined here with reference to a direction of flow of the fluid in the microchannel, for example when the fluid is introduced therein.
- a different distance with respect to the microcavity between the first edge and the second edge makes it possible to promote the capture of objects when the fluid flows in a direction going from the inlet to the outlet of the microchannel and/or to promote their retention when the fluid changes direction.
- the second distance can be greater than 1.2 times the first distance, for example equal to or close to 1.5 times the first distance.
- the first distance can be 10 ⁇ m and the second distance 15 ⁇ m.
- the retention member extends along a flow direction of the microchannel by having a width less than or equal to a width of the microcavity of this capillary trap.
- the length of the retention member may be less than 0.8 times the width of the microcavity, for example equal to or close to 0.7 times the width of the microcavity.
- the width of the microcavity can be 40 ⁇ m and the length of the retention member 28 ⁇ m.
- said microchannel is a primary microchannel, each of the capillary traps comprising a secondary microchannel opening into the microcavity of this capillary trap.
- a secondary microchannel improves the capture of objects within the corresponding capillary trap.
- the secondary microchannel comprises:
- the device comprises an injection member such as a tube configured to introduce said fluid into the microchannel and means for connecting/disconnecting this injection member.
- an injection member such as a tube configured to introduce said fluid into the microchannel and means for connecting/disconnecting this injection member.
- the device of the invention may comprise conventional fluid injection means.
- the medium may be a chip of a lab-on-chip type system.
- the invention also relates to a method for analyzing objects comprising a step of injecting a fluid into the microchannel of a microfluidic device as defined above, said objects being suspended in the fluid thus injected.
- This method may comprise a step of optical detection of the objects retained by the capillary traps of the microfluidic device, for example by irradiating the objects with X-rays.
- FIG. 1 is a schematic view of a microfluidic device according to the invention, this device comprising a chip supporting a microfluidic network;
- FIG. 2 is a magnification of part of the microfluidic network of the device of Figure 1, showing more precisely secondary microchannels belonging to capillary traps fluidically connected to a primary microchannel;
- FIG. 3 is an additional magnification of part of the microfluidic network of Figure 2, showing more precisely two adjacent capillary traps, each of these capillary traps comprising a microcavity, a secondary microchannel and a retention member.
- FIG. 1 a non-limiting example of a microfluidic device 1 according to the invention.
- the device 1 comprises a support 10 forming a chip of a laboratory-on-chip system, generally referred to as “lab-on-chip” in English.
- the support 10 comprises a microfluidic network forming a so-called primary microchannel 2, having an input 3 and an output 4.
- the microchannel 2 comprises sections 201-219 defining a serpentine flow path or direction, allowing in particular to increase the compactness of the device 1.
- Section 201 partially shown in FIG. 2, comprises one end forming inlet 3 of microchannel 2 and another end connected to section 202.
- section 219 partially shown in FIG. 2, comprises one end forming output 4 of microchannel 2 and another end connected to section 218.
- sections 202, 204, 206, 208, 210, 212, 214, 216 and 218 extend parallel to each other and sections 203, 205, 207, 209, 211, 213, 215 and 217 respectively connect sections 202 and 204, 204 and 206, 206 and 208, 208 and 210, 210 and 212, 212 and 214, 214 and 216, 216 and 218 to each other.
- the sections 203, 209 and 215 on the one hand and 205, 211 and 217 on the other hand define a width DI of the microfluidic network.
- the sections 204, 210 and 216 extend over the entire width DI of the microfluidic network while the sections 202, 206, 208, 212, 214 and 218 extend over a distance corresponding approximately to half the DI width of the microfluidic network.
- the sections 206, 212 and 218 extend mainly on a first side of this axis median (on the left in FIG. 2) and the sections 202, 208 and 214 extend mainly from a second side of this median axis (on the right in FIG. 2).
- Such a geometry has particular advantages in terms of arrangement of capillary traps 5 of device 1, described later below, and operation of device 1.
- microchannel 2 has a diameter of 200 ⁇ m and defines an overall volume of approximately 3.2 nL.
- the microchannel 2 makes it possible to convey a fluid from the inlet 3 to the outlet 4, introduced into the microchannel 2 by an injection member (not shown) such as a tube connected in such a way removable at input 3 of microchannel 2.
- the fluid is a liquid in which objects are suspended.
- the liquid can typically form a saline medium having a pH between five and nine.
- the objects in suspension in the liquid are in this example crystals having a size of the order of a micrometer, that is to say less than 1 mm and greater than or equal to 1000 nm, typically an average size of between 10 ⁇ m and 3 p.m.
- the present description applies by analogy to an implementation of the device 1 with another fluid, for example a gaseous fluid, and/or objects other than crystals.
- another fluid for example a gaseous fluid, and/or objects other than crystals.
- Each of these capillary traps 5 comprises a microcavity 6, a retention member 7 and a microchannel 8, called the secondary microchannel.
- the secondary microchannel 8 has a diameter of 10 ⁇ m.
- the microcavity 6 is formed on a wall of the primary microchannel 2 so as to open into the primary microchannel 2 through an opening of width D2, the width D2 being considered along the flow direction.
- the microcavity 6 has a hemispherical shape so that the aforementioned opening is circular.
- the width D2 thus corresponds to an opening diameter of the microcavity 6.
- the secondary microchannel s comprises a first end 8A through which it opens into the microcavity 6 and a second end 8B through which it opens into the primary microchannel 2.
- this secondary microchannel 8 opens via its second end 8B into the section 204 of the primary microchannel 2 and via its first end 8A into the microcavity 6 which opens into the section 202 of the primary microchannel 2 (see FIGS. 2 and 3) .
- the retention member 7 extends in the primary microchannel 2, in this case in the section 202, opposite the microcavity 6 of this capillary trap 5.
- the retention member 7 comprises a so-called retention surface 71 which extends opposite the microcavity 6, an opposite surface 72, an upstream surface 73 and a downstream surface 74.
- upstream and downstream are understood relative to a flow direction SI of the liquid in the primary microchannel 2 when the latter moves from the inlet 3 to the outlet 4.
- edges 75-78 bounds surfaces 71 and 73.
- Edge 75 bounds surfaces 71 and 73, edge 76 bounds surfaces 72 and 73, edge 77 bounds surfaces 72 and 74, and edge 78 bounds surfaces 71 and 74.
- the surfaces 71 and 72 define a thickness of the retention member 7.
- the retention member 7 has a width D3 which corresponds in this example to a distance between the edges 75 and 77, the edge 75 delimiting an upstream end of both the retention surface 71 and the retention member 7, the edge 77 delimiting a downstream end of both the opposite surface 72 and the retention member 7.
- the width D3 of the retention member 7 is less than the width D2 of the microcavity 6.
- D2 is equal to 40 ⁇ m and D3 is equal to 28 ⁇ m.
- the retention member 7 is located at a distance from the microcavity 6.
- the edge 75 is located at a distance D4 from the microcavity 6, that is to say from said opening of the microcavity 6, while the edge 78, which delimits a downstream end of the retention surface 71, is located at a distance D5 from the microcavity 6, that is to say from said opening of the microcavity 6.
- the distance D4 is here greater than the distance D5.
- D4 is equal to 15 ⁇ m and D5 is equal to 10 ⁇ m.
- the retention member 7 has an asymmetrical geometry. In particular, the thickness of the retention member 7 is smaller at its upstream end than at its downstream end.
- the retention surface 71 is concave and the opposite surface 72 is convex.
- Such a geometry and such dimensions of the retention member 7 make it possible both to reduce disturbances to the flow of liquid in the microchannel 2 while contributing to the capture and retention of objects within this trap capillary 5.
- the various capillary traps 5 of the device 1 follow one another between the inlet 3 and the outlet 4 of the primary microchannel 2 in series of 30 adjacent capillary traps 5.
- a first series of capillary traps 5 follow one another along the section 202 in the sense that the microcavity 6 of each of these capillary traps 5 opens into the section 202 and the retention member 7 of each of these capillary traps 5 extends in the section 202, the secondary microchannel s of each of these capillary traps 5 opening via its second end 8B into the section 204.
- a second series of capillary traps 5 follow one another along the section 204, their microcavity 6 opening into the section 204, their retention member 7 extending into the section 202, their secondary microchannel 8 opening through their second end. 8B in section 206.
- a third series of capillary traps 5 follow one another along section 208, their microcavity 6 opening into section 208, their retention member 7 extending into section 208, their secondary microchannel 8 opening through their second end 8B in the section 210.
- a fourth series of capillary traps 5 follow one another along the section 210, their microcavity 6 opening into the section 210, their retention member 7 extending into the section 210, their secondary microchannel 8 opening by their second end 8B in the section 212.
- a fifth series of capillary traps 5 follow one another along the section 214, their microcavity 6 opening into the section 214, their retention member 7 extending into the section 214, their secondary microchannel 8 opening via their second end 8B into the section 216.
- a sixth series of capillary traps 5 follow one another along section 216, their microcavity 6 opening into section 216, their retention member 7 extending into section 216, their secondary microchannel 8 opening via their second end 8B into section 218.
- the microfluidic network of the device 1 is thus formed by the primary microchannel 2 and by all the secondary microchannels 8 of the capillary traps 5.
- the various capillary traps 5 each make it possible to retain within the microcavity 6 one or more objects suspended in the liquid.
- the objects enter a trap 5 through the space extending between the microcavity 6 and the upstream end of the corresponding retention member 7 .
- the capture of the objects is in particular facilitated by the resistance of the various parts of the microfluidic network to the flow of the liquid, which changes as the capture progresses.
- the secondary microchannels 8 having a lower hydraulic resistance than that of the primary microchannel 2, objects located at a certain position along the direction of flow will tend to move towards a secondary microchannel 8 near which they are located so as to be housed in the microcavity 6 of the corresponding capillary trap 5.
- the objects thus captured tend to block this secondary microchannel 8 locally increasing the hydraulic resistance, so that non-captured objects tend to move towards capillary traps 5 further downstream.
- a suction phenomenon occurs typically resulting in a change in the direction of flow of the liquid causing it to move in a direction S2 going from the outlet 4 to the inlet 3 of the microchannel primary 2, or causing to-and-fro movements of the liquid within this microchannel 2.
- the withdrawal of the injection tube produces a vacuum, corresponding to a volume of approximately 5 pL in this example, which draws the liquid located in the microfluidic network outside the latter, this suction vacuum volume being in this case much larger than the overall volume of the liquid filling the microchannel 2, or approximately 3.2 nL in this example.
- microfluidic device 1 in particular in terms of geometry and/or dimension of the microchannel 2, of the capillary traps 5 and/or in particular of the retention members 7, for example depending on the type objects to be analyzed and/or the nature of the transport fluid used.
- said retention surface may have a non-curved hollow shape.
- the position and/or orientation of the retention members may be different from those shown in Figure 3.
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- Dispersion Chemistry (AREA)
- Analytical Chemistry (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Hematology (AREA)
- Physics & Mathematics (AREA)
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Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP23700810.7A EP4475993A1 (fr) | 2022-02-07 | 2023-01-13 | Dispositif microfluidique comprenant des organes de rétention d'objets au sein de pièges capillaires |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2201027 | 2022-02-07 | ||
FR2201027A FR3132518A1 (fr) | 2022-02-07 | 2022-02-07 | Dispositif microfluidique comprenant des organes de rétention d’objets au sein de pièges capillaires |
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WO2023147977A1 true WO2023147977A1 (fr) | 2023-08-10 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/EP2023/050684 WO2023147977A1 (fr) | 2022-02-07 | 2023-01-13 | Dispositif microfluidique comprenant des organes de rétention d'objets au sein de pièges capillaires |
Country Status (3)
Country | Link |
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EP (1) | EP4475993A1 (fr) |
FR (1) | FR3132518A1 (fr) |
WO (1) | WO2023147977A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150196909A1 (en) * | 2014-01-15 | 2015-07-16 | Imec Vzw | Microstructured Micropillar Arrays for Controllable Filling of a Capillary Pump |
US20160214108A1 (en) * | 2015-01-23 | 2016-07-28 | Neofluidics Llc | Microfluidic serial dilution platform based well-plate using an oil-free immiscible phase driven by manual or electronic pipettors |
US20210008554A1 (en) * | 2018-02-16 | 2021-01-14 | Astrego Diagnostics Ab | Cell capture in microfluidic devices |
-
2022
- 2022-02-07 FR FR2201027A patent/FR3132518A1/fr active Pending
-
2023
- 2023-01-13 EP EP23700810.7A patent/EP4475993A1/fr active Pending
- 2023-01-13 WO PCT/EP2023/050684 patent/WO2023147977A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150196909A1 (en) * | 2014-01-15 | 2015-07-16 | Imec Vzw | Microstructured Micropillar Arrays for Controllable Filling of a Capillary Pump |
US20160214108A1 (en) * | 2015-01-23 | 2016-07-28 | Neofluidics Llc | Microfluidic serial dilution platform based well-plate using an oil-free immiscible phase driven by manual or electronic pipettors |
US20210008554A1 (en) * | 2018-02-16 | 2021-01-14 | Astrego Diagnostics Ab | Cell capture in microfluidic devices |
Non-Patent Citations (1)
Title |
---|
"Capture and X-ray diffraction studies of protein microcrystals in a microfluidic trap array", ACTA CRYSTALLOGRAPHICA D71, no. 928-940, 2015 |
Also Published As
Publication number | Publication date |
---|---|
EP4475993A1 (fr) | 2024-12-18 |
FR3132518A1 (fr) | 2023-08-11 |
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