DE102006024355B4 - Microfluidic arrangement for the detection of chemical, biochemical molecules and / or particles contained in samples - Google Patents
Microfluidic arrangement for the detection of chemical, biochemical molecules and / or particles contained in samples Download PDFInfo
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- 239000000126 substance Substances 0.000 title claims abstract description 14
- 239000002245 particle Substances 0.000 title claims abstract description 8
- 238000001514 detection method Methods 0.000 title abstract description 10
- 230000004888 barrier function Effects 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000005496 tempering Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000003018 immunoassay Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000012491 analyte Substances 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002032 lab-on-a-chip Methods 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012487 rinsing solution Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000002198 surface plasmon resonance spectroscopy Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/05—Flow-through cuvettes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/4316—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall or fixed on a central rod
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
- B01F25/431971—Mounted on the wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/30—Micromixers
-
- 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
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- 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
- B01L2300/0636—Integrated biosensor, microarrays
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- 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
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- 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
- B01L2300/0877—Flow chambers
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/18—Means for temperature control
- B01L2300/1805—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks
- B01L2300/1822—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks using Peltier elements
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
Mikrofluidische
Anordnung zur Detektion von in Proben enthaltenen chemischen, biochemischen
Molekülen
und/oder Partikeln,
bei der eine flüssige Probe durch einen Messkanal
in strömender
Form geführt
ist, auf dessen Boden Fängermoleküle und/oder
Fängersubstanzen
immobilisiert sind, wobei
innerhalb des Messkanals (1) Barriereelemente
(2) vorhanden sind, die die Strömungsrichtung
zumindest eines Teils der flüssigen
Probe verändern,
so dass zumindest ein Teil der flüssigen Probe den Messkanal
(1) nicht parallel zu seiner Längsachse
durchströmt;
wobei
Barriereelemente (2) alternierend ausgehend von einem Seitenrand
des Messkanals (1) ausgebildet sind und ein stirnseitiges Ende von
Barriereelementen (2) am gegenüberliegenden
Seitenrand in einem Abstand zu diesem angeordnet ist, so dass ein
Teil der flüssigen
Probe den Messkanal (1) mit ständig
wechselnder Strömungsrichtung
oder mäanderförmig durchströmt;
zwischen
Barriereelementen (2) und dem Boden des Messkanals (1) ein freier
Spalt, durch den ein Teil der flüssigen Probe
strömt,
ausgebildet ist und
Fängermoleküle und/oder
Fängersubstanzen
streifenförmig
immobilisiert...Microfluidic arrangement for the detection of chemical, biochemical molecules and / or particles contained in samples,
in which a liquid sample is passed through a measuring channel in flowing form, on the bottom of capture molecules and / or capture substances are immobilized, wherein
within the measuring channel (1) barrier elements (2) are present, which change the flow direction of at least a portion of the liquid sample, so that at least a portion of the liquid sample does not flow through the measuring channel (1) parallel to its longitudinal axis; in which
Barrier elements (2) are formed alternately starting from a side edge of the measuring channel (1) and a front end of barrier elements (2) is arranged at the opposite side edge at a distance to this, so that a part of the liquid sample the measuring channel (1) with constantly alternating flow direction or meandering flows through;
between barrier elements (2) and the bottom of the measuring channel (1), a free gap, through which a part of the liquid sample flows, is formed, and
Capture molecules and / or capture substances are immobilized in strips ...
Description
Die Erfindung betrifft eine mikrofluidische Anordnung zur Detektion von in Proben enthaltenen chemischen, biochemischen Molekülen und/oder Partikeln. Die Detektion kann dabei bevorzugt optisch/massesensitiv durchgeführt werden. Dabei sollen in flüssigen Proben enthaltene Analyten detektiert werden können, wie dies z.B. bei Immunoassays oder einer DNA-Analyse erforderlich ist. Sie kann bei so genannten Lab-on-a-Chip-Systemen eingesetzt werden.The The invention relates to a microfluidic device for detection of chemical, biochemical molecules and / or particles contained in samples. The detection can be carried out preferably optically / mass-sensitive. It should be in liquid Sample containing analytes can be detected, as e.g. in immunoassays or a DNA analysis is required. It can be used in so-called lab-on-a-chip systems.
An sich bekannte Messverfahren sind hierfür Fluoreszenzimmunoassays oder auch SPR-Systeme. Dabei wird bei letzteren das Oberflächen-Plasmonen-Resonanz-Prinzip ausgenutzt.At Known measuring methods are fluorescence immunoassays or also SPR systems. In the latter case, the surface plasmon resonance principle is exploited.
Die Detektion wird so durchgeführt, dass Fängermole kille oder Fängersubstanzen lokal definiert auf einer Oberfläche, beispielsweise dem Boden eines Messkanals immobilisiert werden, so dass eine ortsaufgelöste Detektion für einen oder mehrere Analyten erfolgen kann. Eine flüssige Probe sowie ggf. auch eine Spülflüssigkeit oder Puffer-Lösung überströmen die immobilisierte Oberfläche. Dabei können jeweilige Moleküle oder auch Partikel an den spezifischen vorab immobilisierten Fänger anbinden (hybridisieren) und dann lokal definiert detektiert werden.The Detection is done that catcher mole kille or catcher substances locally defined on a surface, for example, be immobilized to the bottom of a measuring channel, so a spatially resolved Detection for one or more analytes can be done. A liquid sample and possibly also a rinsing liquid or buffer solution overflow the immobilized surface. It can respective molecules or also bind (hybridize) particles to the specific pre-immobilized catcher and then detected locally defined.
Die
lokale Immobilisierung der Fänger
kann in unterschiedlichster Anordnung erfolgen, wobei im Falle von
SPR-Systemen eine streifenförmige,
auch als Messstreifen bezeichnete Ausbildung bevorzugt ist. Dies
ist beispielsweise in
Eine flüssige Probe durchströmt dabei einen Messkanal in seiner Längsrichtung, auf dessen Boden auch die jeweiligen Fänger in streifenförmiger Anordnung immobilisiert sind. Die Messstreifen sind dabei parallel zueinander und senkrecht zur Längsachse des Messkanals ausgerichtet. Dabei können bis ca. 50 Messstreifen vorhanden sein. Sie können eine Breite und einen Abstand zueinander von jeweils ca. 0,1 mm aufweisen. Ihre Länge kann dabei bei ca. 3 mm liegen.A liquid Sample flows through while a measuring channel in its longitudinal direction, on the bottom also the respective catcher in a striped arrangement are immobilized. The measuring strips are parallel to each other and perpendicular to the longitudinal axis aligned with the measuring channel. It can measure up to 50 gauges to be available. You can ... a Have width and a distance from each other of about 0.1 mm. Your length can be about 3 mm.
Besondere Probleme stellt aber die Anbindung der jeweiligen Moleküle oder auch Partikel an ihre spezifischen Fänger dar. Hierzu sollte die flüssige Probe unter günstigen Bedingungen die jeweiligen Fänger überströmen und möglichst gleichzeitig vermischt werden.Special However, there are problems with the connection of the respective molecules or also particles to their specific catcher dar liquid Sample under auspicious Conditions overflow the respective catcher and preferably be mixed at the same time.
Hierzu gibt es mehrere Lösungsansätze. So wird beispielsweise eine Vermischung in einer Kammer durch eine externe Pumpe erreicht, die an die Kammer angeschlossen ist.For this There are several solutions. So will For example, a mixing in a chamber by an external Pump reached, which is connected to the chamber.
Bei einer anderen bekannten Lösung wird neben der flüssigen Probe eine definierte Luftblase in eine Kammer eingeschlossen. Durch Drehung der Kammer bewegt sich auch die Luftblase und die flüssige Probe soll dadurch vermischt werden. Dadurch sind aber der Miniaturisierung Grenzen gesetzt und auch größere Probenvolumina erforderlich.at another known solution is next to the liquid Sample a defined bubble enclosed in a chamber. By Turning the chamber also moves the air bubble and the liquid sample should be mixed by it. But this is the miniaturization Limits set and also larger sample volumes required.
In all diesen Fällen gelingt es jedoch nur bedingt eine ausreichend hohe Anbindungsrate von Analyten an vorab immobilisierte spezifische Fänger zu erreichen, so dass Messfehler nicht vermieden werden können.In all these cases however, it is only conditionally possible to achieve a sufficiently high connection rate of analytes to pre-immobilized specific scavengers reach, so that measurement errors can not be avoided.
Mikrofluidische
Plattformen mit Kanälen, durch
die Proben zur Durchführung
von Untersuchungen mit Fängermolekülen geführt und
dabei Einfluss auf die Strömung
der Proben genommen werden kann, sind aus
Die
Aus
In
Aus
In
Es ist daher Aufgabe der Erfindung das Anbindungsverhalten von zu detektierenden Molekülen und/oder Partikeln an Fängermoleküle oder Fängersubstanzen zu verbessern.It It is therefore an object of the invention, the binding behavior of detected Molecules and / or Particles on catcher molecules or scavengers to improve.
Erfindungsgemäß wird diese Aufgabe mit einer Anordnung, die die Merkmale des Anspruchs 1 aufweist, gelöst.According to the invention this Task with an arrangement having the features of claim 1, solved.
Vorteilhafte Ausgestaltungen und Weiterbildungen können mit in untergeordneten Ansprüchen bezeichneten Merkmalen erreicht werden.advantageous Embodiments and developments can with in subordinate Claims Characteristics can be achieved.
Bei der Erfindung wird in einer mikrofluidischen Anordnung eine flüssige, chemische, biochemische und/oder Partikel enthaltende Probe durch mindestens einen Messkanal in strömender Form geführt. Am Boden eines Messkanals sind dann spezifische Fängermoleküle und/oder Fängersubstanzen immobilisiert, über die die flüssige Probe strömt. Zusätzlich sind aber innerhalb des Messkanals Barriereelemente vorhanden. Die Barriereelemente sind dabei so angeordnet und ausgerichtet, dass sie zumindest bei einem Teil der strömenden flüssigen Probe die Strömungsrichtung verändern. So kann ein Teil der Probe den Messkanal über seine gesamte Länge im Wesentlichen nicht parallel zur Längsachse des Messkanals durchströmen. Dadurch verlängern sich der dabei zurück zu legende Weg und die Verweilzeit beim Durchströmen des Messkanals.In the invention, in a microfluidic arrangement, a liquid, chemical, biochemical and / or particle-containing sample by ge at least one measuring channel in flowing form leads. At the bottom of a measuring channel then specific capture molecules and / or capture substances are immobilized, over which flows the liquid sample. In addition, however, barrier elements are present within the measuring channel. The barrier elements are arranged and aligned so that they change the flow direction at least in part of the flowing liquid sample. Thus, a portion of the sample flow through the measuring channel over its entire length substantially not parallel to the longitudinal axis of the measuring channel. This lengthens the path to be laid back and the dwell time when flowing through the measuring channel.
Die Barriereelemente sollten dabei in einem Winkel zwischen 1 und 90° in Bezug zur Längsachse des Messkanals ausgerichtet sein, wobei größere Winkel bevorzugt sind. Es kann eine geradlinige Gestalt von Barriereelementen aber auch eine konvexe oder konkave gewählt werden.The Barrier elements should be in an angle between 1 and 90 ° in relation to the longitudinal axis of Be aligned measuring channel, with larger angles are preferred. It can be a straightforward form of barrier elements as well a convex or concave chosen become.
Die Barriereelemente sollen vorteilhaft so ausgebildet sein, dass an einem stirnseitigen Ende kein vollständiger Verschluss des Messkanals auftritt. Barriereelemente sind hierzu von einem Seitenrand des Messkanals ausgehend ausgebildet und das gegenüberliegende stirnseitige Ende ist in einem Abstand zum gegenüberliegenden Seitenrand des Messkanals angeordnet. Werden solche Barriereelemente dann alternierend wechselnd an einem Messkanal vorgesehen und dabei ein nachfolgend angeordnetes Barriereelement von einem Seitenrand, der dem Seitenrand des Messkanals gegenüberliegt von dem das vorhergehende Barriereelement ausgeht, ausgebildet, wechselt ein Teil der flüssigen Probe beim Durchströmen des Messkanals dementsprechend die Strömungsrichtung. Bei einer Ausrichtung von Barriereelementen mit einem großen Winkel und insbesondere bei einem Winkel von 90° in Bezug zur Längsachse des Messkanals durchströmt Probenflüssigkeit den Messkanal mäanderförmig.The Barrier elements should advantageously be designed such that a front end no complete closure of the measuring channel occurs. Barrier elements are for this purpose from a side edge of Measuring channel formed starting and the opposite end face is at a distance to the opposite Side edge of the measuring channel arranged. Become such barrier elements then alternately alternately provided on a measuring channel and thereby a subsequently arranged barrier element from a side edge, which is opposite to the side edge of the measuring channel from that of the previous one Barrier element emanates trained, a part of the liquid sample changes during Flow through the measuring channel accordingly the flow direction. With an alignment of Barrier elements with a large Angle and in particular at an angle of 90 ° with respect to the longitudinal axis flows through the measuring channel sample liquid the measuring channel meandering.
Die Barriereelemente sind so gestaltet und dimensioniert, dass zwischen Barriereelementen und Boden des Messkanals ein freier Spalt verbleibt, durch den ein Teil der flüssigen Probe strömen kann und dabei im Wesentlichen parallel zur Längsachse des Messkanals strömt.The Barrier elements are designed and dimensioned to be between Barrier elements and bottom of the measuring channel a free gap remains, through the part of the liquid Sample pour can and thereby flows substantially parallel to the longitudinal axis of the measuring channel.
Dabei können Barriereelemente beispielsweise an einem Deckelelement ausgebildet oder an diesem befestigt sein, das den Messkanal von oben verschließt. Die Barriereelemente ragen dann von oben in den Messkanal hinein.there can Barrier elements, for example, formed on a cover element or attached to this, which closes the measuring channel from above. The Barrier elements then protrude from above into the measuring channel.
Durch die mögliche Beeinflussung der Strömungsverhältnisse beim Durchströmen der flüssigen Probe durch einen Messkanal, kommt es in Folge der Änderungen der Strömungsrichtung und/oder Strömungsgeschwindigkeit, die mit Barriereelementen erreichbar sind, zu einer besseren Vermischung der flüssigen Probe mit darin enthaltenen Analyt(en).By the possible Influencing the flow conditions when flowing through the liquid sample through a measuring channel, it comes as a result of changes in the flow direction and / or flow rate, which are accessible with barrier elements, for a better mixing the liquid Sample containing analyte (s).
Insbesondere
wenn die erfindungsgemäße Anordnung
an einem System, wie es aus z.B.
Für die Anbindung an Fänger ist es ebenfalls vorteilhaft eine Temperiervorrichtung vorzusehen. Dadurch kann eine besonders geeignete Temperatur eingestellt werden, die beispielsweise bei DNA-Analysen bei ca. 60°C liegen sollte. Hierfür kann beispielsweise ein Wärmetauscher an einer erfindungsgemäßen Anordnung vorgesehen sein. Durch einen solchen Wärmetauscher kann dann ein entsprechend temperiertes Fluid, beispielsweise erwärmtes Wasser, geführt werden.For the connection Beginner It is also advantageous to provide a temperature control. Thereby a particularly suitable temperature can be set, the for example, should be at about 60 ° C in DNA analyzes. For example, this can be a heat exchanger on an arrangement according to the invention be provided. By such a heat exchanger can then be a corresponding tempered fluid, such as heated water, are performed.
Eine Temperiervorrichtung kann aber auch mit mindestens einem Heiz- oder Peltierelement gebildet sein. Dabei sollte der Betrieb aber in geregelter Form erfolgen können.A But tempering can also with at least one heating or Be formed Peltier element. However, the operation should be in a regulated form can be done.
Eine Temperiervorrichtung sollte oberhalb des Messka nals angeordnet sein. Hierfür kann sie beispielsweise an einem Deckelelement angebracht oder darin integriert sein.A Temperature control device should be arranged above the Messka nals. Therefor For example, it may be attached to a lid member or therein be integrated.
Mit der Erfindung kann die Bindungsrate erhöht und die Anbindung mit höherer Ausbeute erreicht werden. Dies erhöht die Sensitivität und die Sicherheit des Analyseergebnisses. Außerdem sind geringere Probenvolumina erforderlich, was zu einer Reduzierung der Kosten führt. Dies trifft auch durch den ggf. möglichen Verzicht oder eine Reduzierung erforderlicher Verbrauchsmittel, wie z.B. kostenintensive Fluophore zu.With The invention can increase the binding rate and the binding with higher yield be achieved. This increases the sensitivity and the safety of the analysis result. In addition, lower sample volumes required, which leads to a reduction in costs. This also by possibly possible Waiver or reduction of required consumables, such as. costly Fluophore too.
Nachfolgend soll die Erfindung beispielhaft näher erläutert werden.following the invention will be explained in more detail by way of example.
Dabei zeigen:there demonstrate:
Die
In
Zwischenräumen
von Messstreifen
Aus
Die
beiden Teilströme
treffen in Bereichen zwischen Barriereelementen
Barriereelemente
Barriereelemente
Mit
Dabei
kann über
einen Einlass flüssige
Probe, Spüllösung oder
ein Puffer in den Messkanal
Im
Messkanal
Unterhalb
des Bodens des Messkanals
Oberhalb
des Messkanals
So
ist unterhalb ein für
eine optische Detektion geeigneter Aufbau mit einem optischen Wellenleiter
Oberhalb
des Messkanals
Über Zu-
und Abflüsse
Außerdem ist
für einen
sicheren Abschluss gegenüber
der Umgebung eine umlaufende Vakuumdichtung
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE102006024355A DE102006024355B4 (en) | 2006-05-19 | 2006-05-19 | Microfluidic arrangement for the detection of chemical, biochemical molecules and / or particles contained in samples |
PCT/DE2007/000926 WO2007134593A1 (en) | 2006-05-19 | 2007-05-15 | Microfluidic arrangement for detecting chemical, biochemical molecules and/or particles contained in samples |
Applications Claiming Priority (1)
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DE102006024355A DE102006024355B4 (en) | 2006-05-19 | 2006-05-19 | Microfluidic arrangement for the detection of chemical, biochemical molecules and / or particles contained in samples |
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DE102006024355A1 DE102006024355A1 (en) | 2007-11-22 |
DE102006024355B4 true DE102006024355B4 (en) | 2008-04-03 |
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DE102006024355A Expired - Fee Related DE102006024355B4 (en) | 2006-05-19 | 2006-05-19 | Microfluidic arrangement for the detection of chemical, biochemical molecules and / or particles contained in samples |
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DE (1) | DE102006024355B4 (en) |
WO (1) | WO2007134593A1 (en) |
Cited By (1)
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DE102011004805A1 (en) * | 2011-02-28 | 2012-08-30 | Siemens Aktiengesellschaft | Miniaturized magnetic flow cytometry |
Families Citing this family (2)
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DE102009046598B4 (en) | 2009-11-11 | 2024-06-13 | Robert Bosch Gmbh | Device for carrying out tests, in particular molecular biological tests |
DE102015204728B8 (en) * | 2015-03-16 | 2021-08-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Measuring device, microfluidic device and cell incubation system for determining a number of biological cells |
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JP4797196B2 (en) * | 2001-02-14 | 2011-10-19 | 株式会社 フューエンス | Microchip |
WO2004008142A1 (en) * | 2002-07-12 | 2004-01-22 | Mitsubishi Chemical Corporation | Analytical chip, analytical chip unit, analyzing apparatus, method of analysis using the apparatus, and method of producing the analytical chip |
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2006
- 2006-05-19 DE DE102006024355A patent/DE102006024355B4/en not_active Expired - Fee Related
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US4618476A (en) * | 1984-02-10 | 1986-10-21 | Eastman Kodak Company | Capillary transport device having speed and meniscus control means |
US6271040B1 (en) * | 1992-05-21 | 2001-08-07 | Biosite Diagnostics Incorporated | Diagnostic devices method and apparatus for the controlled movement of reagents without membranes |
EP0981408B1 (en) * | 1997-05-16 | 2004-04-21 | Alberta Research Council | Microfluidic system and methods of use |
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DE10324973A1 (en) * | 2003-05-27 | 2004-12-30 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Arrangement and method for the optical detection of chemical, biochemical molecules and / or particles contained in samples |
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DE102011004805A1 (en) * | 2011-02-28 | 2012-08-30 | Siemens Aktiengesellschaft | Miniaturized magnetic flow cytometry |
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DE102006024355A1 (en) | 2007-11-22 |
WO2007134593A1 (en) | 2007-11-29 |
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