WO2006077299A1 - Remplissage d'un microcanal d'un composant d'un microsysteme fluidique - Google Patents
Remplissage d'un microcanal d'un composant d'un microsysteme fluidique Download PDFInfo
- Publication number
- WO2006077299A1 WO2006077299A1 PCT/FR2006/000010 FR2006000010W WO2006077299A1 WO 2006077299 A1 WO2006077299 A1 WO 2006077299A1 FR 2006000010 W FR2006000010 W FR 2006000010W WO 2006077299 A1 WO2006077299 A1 WO 2006077299A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- microchannel
- liquid
- filling
- vacuum
- Prior art date
Links
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
- B01L3/502723—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 venting arrangements
-
- 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
- B01L2200/0642—Filling fluids into wells by specific techniques
-
- 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
- B01L2200/0684—Venting, avoiding backpressure, avoid gas bubbles
-
- 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
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
- B01L2300/0816—Cards, e.g. flat sample carriers usually with flow in two horizontal directions
-
- 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
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
- B01L2300/0825—Test strips
-
- 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
- B01L2300/0864—Configuration of multiple channels and/or chambers in a single devices comprising only one inlet and multiple receiving wells, e.g. for separation, splitting
Definitions
- the invention relates to the filling of a microchannel of a component of a fluidic microsystem and such a component adapted to this filling.
- the components of fluidic microsystems are most often made of plastic material or elastomer and include microchannels whose width and height are from a few tens to a few hundred micrometers. It is difficult to fill these microchannels with liquid, especially since some of the materials most used to make these components are hydrophobic, especially polydimethylsiloxane or PDMS.
- the liquid introduced into a microchannel of such a component does not contain any air bubbles or gases that could hinder or even stop the flow of liquid in the microchannel.
- the plastic material or elastomer in which the component is formed easily absorbs the gases and is therefore capable of degassing and releasing gas bubbles into the liquid contained in the microchannel, for example as a consequence of a rise in temperature or a drop in pressure in the microchannel.
- the present invention is intended in particular to provide a simple, effective and economical solution to these problems.
- the plastic or elastomer component that has been degassed has a tendency to immediately reabsorb the gases with which it is in contact.
- the invention uses this phenomenon to create a suction in a microchannel of the component and uses this suction to fill the microchannel liquid.
- the suction caused by the reabsorption of gas by the degassed component is largely sufficient to fill a liquid microchannel of usual size.
- the liquid introduced into the microchannel itself contains bubbles of air or gas, they will be absorbed by the component so that the liquid filling the channel is purged of these air bubbles or gas.
- this method also consists in enclosing the degassed component under vacuum in a hermetic package and, subsequently, opening this package to use the component, this use comprising introducing a liquid into a microchannel of the component, the time interval between the opening of the package of the component and the introduction of the liquid in the microchannel of the component being less than a predetermined time.
- This predetermined time is about 15 to 20 minutes when the component is a PDMS elastomer.
- Degassing of the component is carried out under a partial vacuum for a predetermined minimum period which, for example, is about 1 to 2 hours when the degassing is carried out at a pressure of about 100 to 200 mbar (1 to 2.10 4 Pa).
- liquid is introduced into a feed well formed at one end of the microchannel, so that the liquid introduced into this well forms an obstacle isolating the microchannel from the surrounding atmosphere.
- the absorption of the gas contained in the microchannel by the component then allows complete filling of the microchannel by the liquid without any air or gas bubbles.
- the invention also proposes a component of a fluidic microsystem, at least partly made of plastic or elastomer capable of absorbing gases and comprising at least one microchannel intended to be filled with a liquid, this component being characterized by it has been previously degassed under vacuum and in that it is vacuum-packed in an airtight package.
- the component comprises a feed well open at one end and connected to the microchannel at its other end.
- the end of the microchannel opposite this feed well may be closed or may open into another feed well.
- a median portion of the microchannel has a larger cross section than the end portions of the microchannel connected to the feed well and forms a liquid mixing zone.
- microchannels can be connected by one of their ends to a same feed well.
- the microchannel is formed in a lower face of the component which is applied to a suitable support forming the bottom of the microchannel, and the aforementioned supply well opens on an upper face of the component.
- the support may be of glass, non-degassable plastic material or any other suitable material and may or may not constitute a set unit with the component.
- the invention is applicable in many fields: fluidic damping, analysis of biological or chemical samples, heterogeneous catalysis reactions, DNA hybridization, particle aggregation, etc.
- FIG. schematically a component according to the invention packaged under vacuum in a hermetic package
- FIG. 2 is a schematic sectional view of this component out of its packaging and placed on a suitable support;
- FIGS. 3, 4 and 5 are views corresponding to FIG. 2 and show three stages of filling a microchannel of the component with a liquid;
- FIG. 6 is a schematic top view of an alternative embodiment of the component
- FIG. 7 is a schematic top view of another embodiment of the component.
- FIG. 8 is a flow chart of the main steps of the method according to the invention.
- the component 10 shown diagrammatically in FIGS. 1 to 5 is a component of a fluidic microsystem made at least partly of an elastomer such as PDMS (polydimethylsiloxane) and is in the form of a small block or wafer, one of which face comprises a microchannel 12 connected at one of its ends to a feed well 14 which opens on an opposite face of the component 10, the other end of the microchannel being closed (non-opening).
- PDMS polydimethylsiloxane
- This elastomer component was, according to the invention, degassed under vacuum and vacuum packed in a hermetic package. made of a suitable gas-tight material.
- the packaging 16 forms for example a cell in which the component 10 is placed and which is sealed by a cover 18.
- the degassing to which the component 10 is subjected before its conditioning is carried out under a partial vacuum at a pressure of 100.degree. 200 mbar for example (1 to 2.10 4 Pa) for a period of one to two hours.
- the component 10 is taken out of its packaging 16 and placed on a suitable support 20 such as for example a plate of glass or of suitable plastic material, the component 10 being placed on this plate 20 by its face in which is formed the microchannel 12.
- a suitable support 20 such as for example a plate of glass or of suitable plastic material, the component 10 being placed on this plate 20 by its face in which is formed the microchannel 12.
- This microchannel contains a reagent 22 which is fixed, for example by grafting, at a predetermined point of the support 20.
- a reagent 22 which is fixed, for example by grafting, at a predetermined point of the support 20.
- the component 10 is PDMS or the like, its adhesion to the support 20 of glass or plastic material is natural.
- a liquid 24 is then introduced into the well 14 as shown in FIG. 3, so as to fill at least a portion of this well with the liquid 24 which then forms a plug separating the microchannel 12 from the surrounding atmosphere.
- the material of the component 10 is naturally hydrophobic and this property of the material and the gas contained in the microchannel 12 prevent the liquid 24 from filling the microchannel 12 and coming into contact with the reagent 22.
- the component 10 which has been degassed under vacuum, absorbs the gases with which it is in contact and in particular the gas (that is to say air in most cases) which fills the microchannel 12. This absorption is reflected in a pressure drop in the microchannel 12 and thus by suction of the liquid contained in the well 14.
- the gas absorption capacity of the degassed material component 10 are such that all the gas contained in the microchannel 12 can be absorbed by the component 10 and gradually replaced by the liquid 24 contained in the well 14, as shown schematically in FIGS. 4 and 5.
- the liquid 24 itself contains air or gas bubbles, these bubbles will be absorbed by the material of the component 10 during the filling of the microchannel 12 with the liquid 24.
- the operations provided for carrying out a given reaction of the liquid 24 on the reagent 22 can be carried out, these operations comprising, for example, cycles of heating, temperature maintenance, etc. for a longer or shorter period.
- the material of component 10 which has reabsorbed relatively little gas since its deconditioning is not likely, for a period of several hours, to release air or gas bubbles in the liquid 24 contained in the microchannel 12, which allows to achieve without difficulty the expected reactions.
- a degassed and vacuum-packed component as indicated above, should be used within 15 to 20 minutes after the opening of the package 16, the reabsorption of gas by the material of the component 10 being sufficient to ensure the filling the microchannel (s) 12 with the appropriate liquid or liquids, after which the component 10 may be used for approximately 5-6 hours without releasing gas bubbles into the microchannel (s) 12 during its use.
- the configuration of the component and its or its microchannels and feed wells can be arbitrary.
- a same feed well 14 can be connected to the ends of several microchannels 12 extending in a star around the well 14.
- the same microchannel 12 can be connected at its ends to two feed wells 14 and comprise a median zone 26 of larger size, forming a mixing zone for the liquids introduced into the wells 14.
- a median zone 26 of larger size, forming a mixing zone for the liquids introduced into the wells 14.
- the dimensions of the microchannels 12 are from a few tens to a few hundred microns in height and width.
- the present invention makes it possible, if it is useful, to produce microchannels whose dimensions in height and in width are smaller than those indicated above and which would be very difficult to fill with liquid by the means known from the prior art.
- the filling method according to the invention makes it possible in all cases to ensure complete filling of the microchannels 12, even if their dimensions are very small and if the material of the component 10 is hydrophobic.
- the process according to the invention consists essentially in a prior degassing of the component 10 by exposure to a partial vacuum for a sufficient duration, this degassing being followed by a vacuum packaging 32 in a hermetic package, the component 10 and packaged that can be stored for some time.
- the component 10 is deconditioned (step 34) and must be used at 36 within 15 to 20 minutes after opening the sealed package.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Dispersion Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Hematology (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Micromachines (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002594975A CA2594975A1 (fr) | 2005-01-18 | 2006-01-04 | Remplissage d'un microcanal d'un composant d'un microsysteme fluidique |
JP2007551695A JP2008533437A (ja) | 2005-01-18 | 2006-01-04 | 流体マイクロシステムのコンポーネントにおけるマイクロチャネルの充填 |
EP06704667A EP1846161A1 (fr) | 2005-01-18 | 2006-01-04 | Remplissage d'un microcanal d'un composant d'un microsysteme fluidique |
US11/778,925 US20080008627A1 (en) | 2005-01-18 | 2007-07-17 | Filling a microchannel in a component of a fluidic microsystem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0500511 | 2005-01-18 | ||
FR0500511A FR2880880B1 (fr) | 2005-01-18 | 2005-01-18 | Remplissage d'un microcanal d'un composant d'un microsysteme fluidique |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/778,925 Continuation US20080008627A1 (en) | 2005-01-18 | 2007-07-17 | Filling a microchannel in a component of a fluidic microsystem |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006077299A1 true WO2006077299A1 (fr) | 2006-07-27 |
Family
ID=34953988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2006/000010 WO2006077299A1 (fr) | 2005-01-18 | 2006-01-04 | Remplissage d'un microcanal d'un composant d'un microsysteme fluidique |
Country Status (6)
Country | Link |
---|---|
US (1) | US20080008627A1 (fr) |
EP (1) | EP1846161A1 (fr) |
JP (1) | JP2008533437A (fr) |
CA (1) | CA2594975A1 (fr) |
FR (1) | FR2880880B1 (fr) |
WO (1) | WO2006077299A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100287189A1 (en) * | 2009-05-05 | 2010-11-11 | Pioneer Hi-Bred International, Inc. | Acceleration of tag placement using custom hardware |
DE102009052828A1 (de) * | 2009-11-13 | 2011-05-19 | Stiftung Caesar Center Of Advanced European Studies And Research | Verfahren zum blasenfreien Befüllen einer Mikrokavität |
CN107923382B (zh) * | 2015-06-23 | 2019-11-08 | 纳诺赛莱克特生物医药股份有限公司 | 用于细胞分选和流式细胞计数法的系统、设备和方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4537747A (en) * | 1983-03-16 | 1985-08-27 | Chemetrics, Inc. | Disposable device for sampling and diluting |
DE19750452A1 (de) * | 1997-11-14 | 1999-06-02 | Juergen Bethkenhagen | Sterile Verpackung von Blutentnahmevorrichtungen und Verfahren zum Herstellen solcher Verpackungen |
US20020029814A1 (en) * | 1999-06-28 | 2002-03-14 | Marc Unger | Microfabricated elastomeric valve and pump systems |
US6553319B1 (en) * | 2001-07-10 | 2003-04-22 | Southwest Research Institute | Unattended liquid sample monitoring and liquid sample storage system |
US6743399B1 (en) * | 1999-10-08 | 2004-06-01 | Micronics, Inc. | Pumpless microfluidics |
WO2004065930A2 (fr) * | 2003-01-14 | 2004-08-05 | Micronics Inc. | Dispositifs microfluidiques pour la manipulation et l'analyse de fluides |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6143496A (en) * | 1997-04-17 | 2000-11-07 | Cytonix Corporation | Method of sampling, amplifying and quantifying segment of nucleic acid, polymerase chain reaction assembly having nanoliter-sized sample chambers, and method of filling assembly |
US6875619B2 (en) * | 1999-11-12 | 2005-04-05 | Motorola, Inc. | Microfluidic devices comprising biochannels |
JP2002018271A (ja) * | 2000-07-05 | 2002-01-22 | Kawamura Inst Of Chem Res | 微小ケミカルデバイス |
JP2003299485A (ja) * | 2002-04-10 | 2003-10-21 | Sekisui Chem Co Ltd | 温度制御型マイクロリアクター及びマイクロリアクターシステム |
-
2005
- 2005-01-18 FR FR0500511A patent/FR2880880B1/fr active Active
-
2006
- 2006-01-04 JP JP2007551695A patent/JP2008533437A/ja active Pending
- 2006-01-04 CA CA002594975A patent/CA2594975A1/fr not_active Abandoned
- 2006-01-04 WO PCT/FR2006/000010 patent/WO2006077299A1/fr active Application Filing
- 2006-01-04 EP EP06704667A patent/EP1846161A1/fr not_active Withdrawn
-
2007
- 2007-07-17 US US11/778,925 patent/US20080008627A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4537747A (en) * | 1983-03-16 | 1985-08-27 | Chemetrics, Inc. | Disposable device for sampling and diluting |
DE19750452A1 (de) * | 1997-11-14 | 1999-06-02 | Juergen Bethkenhagen | Sterile Verpackung von Blutentnahmevorrichtungen und Verfahren zum Herstellen solcher Verpackungen |
US20020029814A1 (en) * | 1999-06-28 | 2002-03-14 | Marc Unger | Microfabricated elastomeric valve and pump systems |
US6743399B1 (en) * | 1999-10-08 | 2004-06-01 | Micronics, Inc. | Pumpless microfluidics |
US6553319B1 (en) * | 2001-07-10 | 2003-04-22 | Southwest Research Institute | Unattended liquid sample monitoring and liquid sample storage system |
WO2004065930A2 (fr) * | 2003-01-14 | 2004-08-05 | Micronics Inc. | Dispositifs microfluidiques pour la manipulation et l'analyse de fluides |
Also Published As
Publication number | Publication date |
---|---|
FR2880880A1 (fr) | 2006-07-21 |
CA2594975A1 (fr) | 2006-07-27 |
EP1846161A1 (fr) | 2007-10-24 |
FR2880880B1 (fr) | 2008-06-20 |
US20080008627A1 (en) | 2008-01-10 |
JP2008533437A (ja) | 2008-08-21 |
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