WO2000077507A1 - Vorrichtung zur probenaufgabe - Google Patents
Vorrichtung zur probenaufgabe Download PDFInfo
- Publication number
- WO2000077507A1 WO2000077507A1 PCT/EP2000/005204 EP0005204W WO0077507A1 WO 2000077507 A1 WO2000077507 A1 WO 2000077507A1 EP 0005204 W EP0005204 W EP 0005204W WO 0077507 A1 WO0077507 A1 WO 0077507A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sample
- channel
- volume
- section
- separation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44756—Apparatus specially adapted therefor
- G01N27/44791—Microapparatus
-
- 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
- B01L3/502769—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 multiphase flow arrangements
- B01L3/502784—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 multiphase flow arrangements specially adapted for droplet or plug flow, e.g. digital microfluidics
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44704—Details; Accessories
- G01N27/44717—Arrangements for investigating the separated zones, e.g. localising zones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44704—Details; Accessories
- G01N27/44743—Introducing samples
-
- 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
- B01L2200/027—Fluid interfacing between devices or objects, e.g. connectors, inlet details for microfluidic devices
-
- 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
- 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
- B01L2400/0415—Moving fluids with specific forces or mechanical means specific forces electrical forces, e.g. electrokinetic
-
- 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
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0487—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics
-
- 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
- B01L3/502738—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 integrated valves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1095—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers
Definitions
- the invention relates to a device for sample application for planar, miniaturized analysis systems.
- ITP isotachophoresis
- Electrophoretic separation processes such as the ITP are also suitable for use in miniaturized analysis systems (MAS), so that the equipment required for the analyzes can be greatly reduced.
- MAS miniaturized analysis systems
- the device for sample application In addition to the analysis device itself, one of the most important components of a miniaturized system is the device for sample application. Since methods such as the ITP are very variable with regard to the nature and amount of the sample, the type of sample application determines which sample volume and which type of sample can be analyzed. In macroscopic analysis systems, mechanical feed devices for feeding a defined sample volume can be used, similar to devices for high-pressure liquid chromatography or devices for isotachophoresis. Figure 4 shows an example of such a feeding device from the prior art. The devices mostly consist of complex cock systems, some with integrated feed loops. These devices cannot be transferred to miniaturized analysis systems because rotatable taps or other mechanical devices, such as closable valves, cannot be miniaturized accordingly.
- FIG. 3 A schematic structure of such a device from the prior art is shown in Figure 3.
- Crossed or offset crossed capillary structures define a sample volume by first filling a channel with sample. This can be done electro-osmotically, for example, by applying a voltage. The electrodes on the filled channel are then switched to the same potential and a voltage is applied to the separating channel system perpendicular to it. In this way, the sample volume, which is located at the interface of the two channel systems, is transported into the separation channel system. The sample volume generated in this way is in the range of a few nanoliters or less.
- sample application can be carried out with a sufficiently large channel cross section by hydrodynamic injection from a sample vessel. Part of the sample is created by time-controlled application of a sample vessel.
- a direct, electrophoretic injection from an external sample vessel (without utilizing the electroosmotic flow), as it is also used in commercial devices, is in principle not suitable for giving up defined volumes, since no volume flow is generated in the sample solution, but only Ions are transferred electrophoretically into the separation system.
- the object of the present invention is therefore to develop a device for sample application which makes it possible to introduce defined variable sample volumes between 0.01 to 100 ⁇ l in a miniaturized analysis system.
- a feed device consisting of a channel system and fluid connections for liquid transport enables large sample volumes to be fed in planar systems.
- a specific channel section is filled with the sample solution.
- the volume of the channel section and thus the sample volume applied is determined by the geometry of the channel section, but is otherwise freely selectable.
- the invention therefore relates to a device for feeding defined sample volumes over 0.01 ⁇ l for miniaturized analysis systems, comprising mainly at least one channel section, at the ends of which there are fluid connections.
- Another preferred embodiment is a feed device that contains at least two channel sections located one behind the other, each of which is delimited by fluid connections. If both channel sections are directly adjacent to one another, a total of three fluidic connections are provided.
- a preferred embodiment is also a feed device which contains a channel system with at least two parallel channel sections which are delimited independently of one another by fluid connections.
- a preferred embodiment is a device which has micromixer valves and micropumps or tightly closing micropumps as fluidic connections.
- Figure 1 shows a feed device according to the invention.
- Figure 2 shows a possible procedure for filling a miniaturized analysis system with a feed device according to the invention.
- FIG. 3 shows a feeding device for miniaturized analysis systems from the prior art.
- Figure 4 shows a feeding device for macroscopic analysis systems from the prior art.
- the channel system is opened at two points during the sample application.
- One opening serves to introduce the liquid, ie for example the sample solution
- the other opening allows the liquid or air previously in the system to escape.
- the application device according to the invention is the displacement of a liquid or gas volume located in a specific channel section by the sample solution.
- Liquid is displaced in the intermediate channel section or the intermediate channel section is filled.
- the liquid in any adjacent side channels that may be present is not exchanged, since there are no open inlet or outlet openings in the side channels, and so the liquid is not moved in these areas by pressure or suction.
- Losses or dilutions due to liquid flows at the contact surfaces to side channels are small in relation to the total sample volume, which is typically in the ⁇ l range. With a suitable constant dosing speed, the sample application can be reproduced very well. This is a great advantage over methods in which very small sample volumes of a few nanoliters are applied.
- a feed device according to the invention is also suitable for task volumes of less than 50 nl. However, compromises are then necessary with regard to precision and accuracy.
- the sample liquid can be transported via tightly connected pumps, syringes, micromixers, electro-osmosis or hydrostatic pressure, preferably via micropumps and valves.
- These devices can preferably be attached outside, as close as possible to the chip.
- the escaping liquid does not have to be pumped out additionally. It is displaced sufficiently effectively by the pressure of the replacement fluid injected.
- This type of filling avoids the disadvantages of electroosmotic injection, ie the filling is largely independent of the sample composition, pH value and the material of the analysis system. Any disruptive fluid movement, such as hydrostatic pressure differences or electro-osmosis, is prevented by the existing valves or tightly closing pumps.
- fluid connections all valves, pumps or micropumps, tight-closing micropumps, micromixers or other connections of the device according to the invention which serve to fill the channel system are referred to as fluid connections.
- the feed device according to the invention can be used for any type of planar miniaturized analysis system. These can be systems for analysis or systems that additionally contain separation or derivatization units. Corresponding miniaturized systems are known to the person skilled in the art.
- Viscosity and ionic strength of the sample solution or the solution to be displaced have little influence on the dosage or the filling speed. It is possible to fill in suspensions, emulsions, liquids containing particles and cells.
- the choice of material for the construction of the analysis device is subject to, i.e. in particular, the nature of the walls of the channel system of the device for sample application according to the invention has no restriction. Pressure fluctuations, pulsations, start-up or stop effects during the introduction of the sample also have no influence on the dosing accuracy.
- the device according to the invention has wide limits with regard to the task volume due to the system.
- the volume of the sample liquid that can be injected is determined solely by the volume of the channel section determined, which is located between the openings.
- sample volumes adapted to the analytical problem can be determined in advance. It is also possible to implement sections of different sizes in parallel and / or in series, so that the volume of the section to be displaced by the sample solution can be varied.
- An analysis system for using the device according to the invention is therefore preferably provided with a plurality of channel sections of different dimensions, which can be used for the sample application via independent fluid connections.
- sample volumes between 0.01 ⁇ l and 100 ⁇ l, preferably between 0.05 and 30 ⁇ l, can be injected in different increments as required.
- variation coefficients of approximately 5%, typically below 2%, are typically achieved when sample volumes from 1 ⁇ l are applied.
- Figure 1 shows an example of a possible arrangement of the channel system of the feed device according to the invention.
- the channel system is divided into two channel sections 1A and 1 B with different volumes. Adjacent to this is the separation channel 1 C.
- the separation channel 1 C Adjacent to this is the separation channel 1 C.
- the sample in section 1 C is separated by applying a voltage. If only section 1A has been filled with the sample, section 1B can also be used as a separating section so that the separating section can be extended if necessary.
- Figure 2 shows a possible procedure for filling a miniaturized analysis system.
- a channel system is shown consisting of three reservoirs R1 to R3, the channel sections K1 to K4, the fluid connections F1 to F6 and a branching point Vz.
- the system shown in the figure has a channel section K1 for sample application.
- the separation can take place along the channel section K2 and K3 or K2 and K4.
- the system must be filled with a sample and appropriate buffers.
- the sample volume must be in contact with a buffer (leading buffer) on one side in the direction of the separation section and with another buffer (terminating buffer) on the other side.
- Vz of the channel system it is possible to fill in different leading buffers via the reservoirs R2 and R3. Separated components can be removed from the sample via the fluid connection F3.
- the fluid connections F2 (outlet), F4, F5 and F6 (inlets) are first opened as shown schematically under A in the figure, and the channel system via the three reservoirs with the both leading buffers (above R2 and R3, shown hatched or dotted) and the terminating buffer (above R1, shown in vertical stripes). Excess buffer can escape through the fluid connection F2. In this way, channel section K1 fills with terminating
- section K4 with leading buffer (LE1) over R3 and channel section K2 contains a mixture of the two leading buffers.
- the fluid connections F1 and F3 remain closed in this step.
- the channel section K2 can optionally be filled with leading buffers via R2 or R3.
- K2 represents the first section of the separation section
- Part B of the figure shows how the sample is introduced into the channel section K1 and how the channel section K2 is filled with a leading buffer via R3.
- the fluid connections F5 and F6 are closed and no further terminating buffer is pumped via R1 and no further leading buffer (LE2) is pumped via R2.
- Fluid connection F4 is open and channel section K2 is filled with leading buffer (LE1) via R3.
- the fluid connection F1 is open and the sample is fed via F1 (shown as wavy lines). Excess sample and excess leading buffer (LE1) can escape via the opened fluidic connection F2. Because the leading buffer (LE1) and the sample volume are simultaneously pumped against each other, a particularly precise filling of the channel sections K1 and K2 is achieved. In this way it is also possible to carry out an exact filling with pumps that have a low pulsation.
- the fluid connections are closed.
- a closed system without hydrodynamic flow is obtained in which the separation can be carried out reproducibly.
- the sample can be whole or in fractions over the
- Channel sections K2 and K3 or via the channel sections K2 and K4 are separated. As soon as the sample or a selected fraction has migrated through the channel section K2 and has reached the junction Vz, it can be decided whether the separation should be carried out in the direction of K4 or K3. This is done by switching the anode potential from F4 to F6 continuously or temporarily.
- the following table shows an overview of the switching of the fluid connections during the individual steps of the sample application:
- Figure 3 shows a possibility for electrokinetic sample application in miniaturized analysis systems according to the prior art.
- Pictures A, B, C and D show the individual steps of the sample application.
- Picture A shows schematically a crossed channel structure.
- the electrodes E1 to E4 are located at the ends of the channels.
- a channel is filled with sample by applying a voltage between electrode E1 (0 V) and E2 (+ 500 V).
- the sample volume located at the interface of the two channel systems is transported into the separation channel system ( Figure D).
- the sample volume generated in this way is in the range of a few nanoliters or less.
- Figure 4 shows an option for sample application in macroscopic analysis systems, such as the Isotachophoresencing ItaChrom ® EA 101 of the company I + M, analytical measurement and control technology, Germany.
- the pictures A1 / A2, B1 / B2 and C1 / C2 show the different stages of the sample application, the pictures A1, B1 and C1 showing a side view of the application device, the pictures A2, B2 and C2 a view from above.
- This mechanical device for sample application consists of a tap K which is surrounded by a casing U. Both the casing U and the tap K have multiple channels.
- the tap K can be rotated in the casing U in such a way that specific channels are connected in the tap and casing and liquids from storage vessels reach the connected isotachophoresis device by the device shown.
- the storage container and the ITP device are not shown in the figure, but are only indicated by arrows.
- Figures A1 / A2 the tap is turned so that a connection of the duct pieces 3, 4 and 5, and 2 and 6.
- Channel piece 5 in the interior of the tap is thereby filled with sample solution from a storage vessel which is connected to channel 3.
- the channel system of the isotachophoresis device is filled with one of the two separation buffers (buffer 1) necessary for an ITP via a storage vessel on channel 2.
- a second step (Fig. B1 / B2) the tap K is turned so that the sewer connections existing in Fig. A1 / A2 are interrupted. Instead, a connection of the channel pieces 1 and 7 is established. In this way, the channel system behind the feed device is filled with a second buffer (buffer 2). Finally, in picture C1 / C2 the tap K is turned again so that the duct sections 1, 5 and 2 are connected. Channel 2 is filled with buffer 1, channel 5 with the sample solution and channel 1 with buffer 2. In this way, a volume of the sample solution defined by the dimensions of channel 5 is embedded between the two buffers necessary for the ITP. The separation can now be started by applying a voltage.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Hematology (AREA)
- Clinical Laboratory Science (AREA)
- Sampling And Sample Adjustment (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU56781/00A AU5678100A (en) | 1999-06-16 | 2000-06-06 | Device for introducing samples |
| EP00942016A EP1185859A1 (de) | 1999-06-16 | 2000-06-06 | Vorrichtung zur probenaufgabe |
| JP2001503515A JP2003502635A (ja) | 1999-06-16 | 2000-06-06 | 試料送達装置 |
| JP2001503518A JP4387624B2 (ja) | 1999-06-16 | 2000-06-15 | 試料作成装置 |
| EP00938793A EP1194769A1 (de) | 1999-06-16 | 2000-06-15 | Vorrichtung zur probenvorbereitung |
| AU54051/00A AU5405100A (en) | 1999-06-16 | 2000-06-15 | Device for preparing samples |
| PCT/EP2000/005518 WO2000077511A1 (de) | 1999-06-16 | 2000-06-15 | Vorrichtung zur probenvorbereitung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19927534.3 | 1999-06-16 | ||
| DE19927534A DE19927534B4 (de) | 1999-06-16 | 1999-06-16 | Vorrichtung zur Probenaufgabe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2000077507A1 true WO2000077507A1 (de) | 2000-12-21 |
| WO2000077507A8 WO2000077507A8 (de) | 2001-04-19 |
Family
ID=7911466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2000/005204 Ceased WO2000077507A1 (de) | 1999-06-16 | 2000-06-06 | Vorrichtung zur probenaufgabe |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1185859A1 (de) |
| JP (1) | JP2003502635A (de) |
| AU (1) | AU5678100A (de) |
| DE (1) | DE19927534B4 (de) |
| WO (1) | WO2000077507A1 (de) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997022825A1 (en) * | 1995-12-18 | 1997-06-26 | Neukermans Armand P | Microfluidic valve and integrated microfluidic system |
| US5644395A (en) * | 1995-07-14 | 1997-07-01 | Regents Of The University Of California | Miniaturized flow injection analysis system |
| WO1998000231A1 (en) * | 1996-06-28 | 1998-01-08 | Caliper Technologies Corporation | High-throughput screening assay systems in microscale fluidic devices |
| WO1998052691A1 (en) * | 1997-05-16 | 1998-11-26 | Alberta Research Council | Microfluidic system and methods of use |
| WO1998058247A1 (en) * | 1997-06-18 | 1998-12-23 | Soane Biosciences, Inc. | Method for sample injection in microchannel device |
| WO1999009042A2 (en) * | 1997-08-13 | 1999-02-25 | Cepheid | Microstructures for the manipulation of fluid samples |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6001229A (en) * | 1994-08-01 | 1999-12-14 | Lockheed Martin Energy Systems, Inc. | Apparatus and method for performing microfluidic manipulations for chemical analysis |
| US6399023B1 (en) * | 1996-04-16 | 2002-06-04 | Caliper Technologies Corp. | Analytical system and method |
-
1999
- 1999-06-16 DE DE19927534A patent/DE19927534B4/de not_active Expired - Fee Related
-
2000
- 2000-06-06 AU AU56781/00A patent/AU5678100A/en not_active Abandoned
- 2000-06-06 EP EP00942016A patent/EP1185859A1/de not_active Withdrawn
- 2000-06-06 WO PCT/EP2000/005204 patent/WO2000077507A1/de not_active Ceased
- 2000-06-06 JP JP2001503515A patent/JP2003502635A/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5644395A (en) * | 1995-07-14 | 1997-07-01 | Regents Of The University Of California | Miniaturized flow injection analysis system |
| WO1997022825A1 (en) * | 1995-12-18 | 1997-06-26 | Neukermans Armand P | Microfluidic valve and integrated microfluidic system |
| WO1998000231A1 (en) * | 1996-06-28 | 1998-01-08 | Caliper Technologies Corporation | High-throughput screening assay systems in microscale fluidic devices |
| WO1998052691A1 (en) * | 1997-05-16 | 1998-11-26 | Alberta Research Council | Microfluidic system and methods of use |
| WO1998058247A1 (en) * | 1997-06-18 | 1998-12-23 | Soane Biosciences, Inc. | Method for sample injection in microchannel device |
| WO1999009042A2 (en) * | 1997-08-13 | 1999-02-25 | Cepheid | Microstructures for the manipulation of fluid samples |
Non-Patent Citations (2)
| Title |
|---|
| ELWENSPOEK M ET AL: "TOWARDS INTEGRATED MICROLIQUID HANDLING SYSTEMS", JOURNAL OF MICROMECHANICS & MICROENGINEERING,US,NEW YORK, NY, vol. 4, no. 4, 1 December 1994 (1994-12-01), pages 227 - 245, XP000601275, ISSN: 0960-1317 * |
| GRAVESEN P ET AL: "MICROFLUIDICS - A REVIEW", JOURNAL OF MICROMECHANICS & MICROENGINEERING,US,NEW YORK, NY, vol. 3, 1993, pages 168 - 182, XP000601274, ISSN: 0960-1317 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003502635A (ja) | 2003-01-21 |
| EP1185859A1 (de) | 2002-03-13 |
| DE19927534B4 (de) | 2008-01-31 |
| DE19927534A1 (de) | 2001-01-04 |
| WO2000077507A8 (de) | 2001-04-19 |
| AU5678100A (en) | 2001-01-02 |
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