EP2322277A1 - Microfluid chip - Google Patents
Microfluid chip Download PDFInfo
- Publication number
- EP2322277A1 EP2322277A1 EP10179869A EP10179869A EP2322277A1 EP 2322277 A1 EP2322277 A1 EP 2322277A1 EP 10179869 A EP10179869 A EP 10179869A EP 10179869 A EP10179869 A EP 10179869A EP 2322277 A1 EP2322277 A1 EP 2322277A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- recess
- microfluidic
- microfluidic chip
- liquid
- liquid reservoir
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 172
- 239000012528 membrane Substances 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 5
- 230000002427 irreversible effect Effects 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims 2
- 238000011017 operating method Methods 0.000 abstract 1
- 210000004379 membrane Anatomy 0.000 description 37
- 230000036512 infertility Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002032 lab-on-a-chip Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010041953 Staring Diseases 0.000 description 1
- 239000012042 active reagent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/50273—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the means or forces applied to move the fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/52—Containers specially adapted for storing or dispensing a reagent
- B01L3/523—Containers specially adapted for storing or dispensing a reagent with means for closing or opening
-
- 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
- B01L2200/16—Reagents, handling or storing thereof
-
- 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
- B01L2300/0848—Specific forms of parts of containers
-
- 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
- B01L2300/12—Specific details about materials
- B01L2300/123—Flexible; Elastomeric
-
- 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
- B01L2400/0481—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure squeezing of channels or chambers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
- Y10T436/2575—Volumetric liquid transfer
Definitions
- the present invention relates to microfluidic chips, microfluidic fluid reservoirs, microfluidic kits and methods for their operation.
- LOC Lab-on-a-chip
- Liquids are usually stored in such systems on the chip itself or supplied to the chip via hoses. In this case, however, the actuation of the liquid and / or ensuring a sufficiently high sterility of the liquids can be problematic.
- the present invention provides two-component solutions based on separation of the microfluidic chip and liquid reservoir and liquid actuation across a stretchable surface.
- a separation of the chip and the liquid reservoir can have an advantageous effect on the storage and exchange of sensitive, in particular biologically active reagents containing liquids.
- By a stretchable surface can thereby a simple and / or robust liquid actuation with an optionally high degree of sterility can be achieved.
- the expandable membrane can be separated from the liquid side by the expandable membrane, in particular when using a suitably designed, later explained liquid reservoir, the Aktuleitersseite.
- the Aktuleitersseite can be separated from the liquid side by the expandable membrane, in particular when using a suitably designed, later explained liquid reservoir, the Aktuleitersseite.
- the Aktuleitersseite can be separated from the liquid side by the expandable membrane, in particular when using a suitably designed, later explained liquid reservoir, the Aktu michsseite.
- the microfluidic chip can be a chip laboratory or laboratory-on-the-chip system or west pocket laboratory, for example for the analysis of water and / or blood.
- the recess may in particular be designed such that a liquid reservoir in the recess, in particular liquid-tight and / or gas-tight, inserted and / or locked (clipped) and / or can be screwed.
- the recess for receiving a liquid reservoir having a rigid wall area and an openable wall area or a liquid reservoir with a rigid wall area, a stretchable, in particular elastic, wall area and an openable wall area be formed.
- the expandable membrane is preferably designed to contact the expandable wall region of a liquid reservoir mounted in the recess in the case of a liquid reservoir having a rigid and an openable wall region.
- the liquid channel access is preferably designed to contact the openable wall region of a liquid reservoir mounted in the recess.
- the microfluidic chip in particular the recess of the microfluidic chip, can furthermore have a groove and / or a spring / projection in order to communicate with the microfluidic through a corresponding spring / protrusion and / or groove of a microfluidic liquid reservoir, in particular a rigid wall region of a microfluidic liquid reservoir Liquid reservoir to be connected.
- the expandable membrane can be stretched into a recess, in particular mounted liquid reservoir in volume displacement, in particular to move a liquid from the liquid reservoir into the liquid channel access.
- the volume displaced by the expandable membrane can correspond to the moving volume of liquid.
- the liquid container in addition to liquid still contains a gas, for example air, may - due to compression of the gas - the liquid volume moved be less than the displaced volume of the expandable membrane.
- the actuator can be integrated in both the expandable membrane and separately to the expandable membrane, for example, adjacent to the expandable membrane, be formed.
- the actuator may be a pneumatic actuator (for example, an actuator operated with external compressed air), a thermal actuator (for example, an actuator operated by gas generation), a piezoelectric actuator, and / or a mechanical actuator.
- the actuator comprises a pressure channel adjacent to the expandable membrane.
- the expandable membrane can be stretched in a simple manner under volume displacement in the recess.
- the liquid channel access can be designed, for example, such that the liquid channel access opens when a liquid reservoir is received and / or closes when a liquid reservoir is removed.
- the liquid channel access may be designed such that the liquid channel access opens on the basis of a mechanical mechanism when receiving a liquid reservoir and closes again when the liquid reservoir is removed. In this way, when replacing the liquid reservoir, it can be advantageously prevented that impurities enter the liquid channel and that liquid from the liquid channel flows back into the recess.
- the liquid channel access may further or alternatively be designed like a valve.
- the liquid channel access may comprise a perforated, elastic membrane whose perforations are liquid-impermeable under normal pressure and liquid-permeable upon application of a certain pressure, in particular due to expansion-induced enlargement.
- microfluidic fluid reservoir for example, a partially or completely filled with a liquid, microfluidic fluid reservoir for insbesondre releasably receiving in a recess of a previously described microfluidic chip.
- the liquid reservoir has a rigid wall region and an openable wall region, wherein the openable wall region is configured to contact the microfluidic chip in the recess, the expandable membrane and the liquid channel access of the microfluidic chip.
- the liquid reservoir has a rigid wall region, a stretchable, in particular elastic, wall region and an openable wall region, wherein the expandable wall region is designed, in the state mounted in the recess of the microfluidic chip, the expandable membrane of the microfluidic chip to contact, in particular with the formation of a double membrane, and wherein the openable wall region is formed, in which in the Recess of the microfluidic chip mounted state to contact the liquid channel access of the microfluidic chip.
- Such a closed, microfluidic liquid reservoir can advantageously be kept sterile more easily and thus the storage of sensitive liquids can be simplified.
- the microfluidic fluid reservoir in particular the rigid wall region of the microfluidic fluid reservoir, can have a groove and / or a spring / projection in order to engage with the microfluidic chip through a corresponding spring / cantilever and / or groove of a microfluidic chip, in particular a recess of a microfluidic chip to be connected.
- the openable wall region is designed in the form of a reversibly or irreversibly openable cover or in the form of a reversibly or irreversibly openable membrane.
- a reversibly openable lid can be designed such that the lid opens on the basis of a mechanical mechanism, for example by moving the lid, when receiving the liquid reservoir in a recess of a microfluidic chip and when removing the liquid reservoir from a recess of a microfluidic chip closes again.
- An irreversibly openable lid can be designed, for example, such that the lid opens on the basis of a mechanical mechanism, for example by removing or displacing the lid, when receiving the liquid reservoir in a recess of a microfluidic chip.
- a reversibly openable membrane can be, for example, a perforated, elastic membrane whose perforations are liquid-impermeable under normal pressure and liquid-permeable when exposed to a certain pressure, in particular due to an expansion-related enlargement.
- An irreversibly openable membrane may, for example, be a membrane which is destroyed during opening or when receiving the liquid reservoir in a recess of a microfluidic chip and thus opened.
- the actuation side can advantageously be separated from the liquid side when using a suitably designed, later-described liquid reservoir, by the expandable wall region. This in turn ensures a high sterility of the fluids used.
- liquids can be actuated in a simpler and / or more robust manner than in many known microfluidic chips.
- the liquid reservoir can be opened and / or connected only directly before use, thereby simplifying storage and increasing the adaptability of the system.
- the microfluidic chip can here also be a chip laboratory or laboratory-on-the-chip system or west pocket laboratory, for example for the analysis of water and / or blood.
- the recess can also be formed in this case such that a liquid reservoir in the recess, in particular liquid-tight and / or gas-tight, inserted and / or locked (clipped) and / or can be screwed.
- the microfluidic chip in particular the recess of the microfluidic chip, may in this case also have a groove and / or a spring / projection in order to engage with a corresponding spring / cantilever and / or groove of a microfluidic liquid reservoir, in particular a rigid wall region of a microfluidic liquid reservoir microfluidic fluid reservoir to be connected.
- the actuator can also be a pneumatic actuator (for example an actuator operated with external compressed air), a thermal actuator (for example an actuator operated by gas generation), a piezoelectric actuator and / or a mechanical actuator.
- the actuator also comprises a pressure channel adjacent to the recess.
- a pressure channel adjacent to the recess.
- a stretchable, in particular elastic, wall region of a liquid reservoir mounted in the recess can be stretched in a simple manner into the liquid reservoir with volume displacement.
- the actuator can be designed to contact a stretchable, in particular elastic, wall region of a liquid reservoir mounted in the recess.
- the liquid channel access may, for example, be designed such that the liquid channel access opens when a liquid reservoir is received and / or closes when a liquid reservoir is removed.
- the liquid channel access may be configured such that the liquid channel access opens on the basis of a mechanical mechanism when receiving a liquid reservoir and when Removal of the liquid reservoir closes again. In this way, when replacing the liquid reservoir, it can be advantageously prevented that impurities enter the liquid channel and that liquid from the liquid channel flows back into the recess.
- the liquid channel access may further or alternatively be designed like a valve.
- the liquid channel access may comprise a perforated, elastic membrane whose perforations are liquid-impermeable under normal pressure and liquid-permeable upon application of a certain pressure, in particular due to expansion-induced enlargement.
- the liquid channel access is preferably designed to contact the openable wall region of a liquid reservoir mounted in the recess.
- Another object of the present invention is a microfluidic fluid reservoir, for example, a partially or completely filled with a liquid, microfluidic fluid reservoir, an alternative embodiment of the invention, which is designed for releasably receiving in particular in a recess of a microfluidic chip of the alternative embodiment of the invention.
- a microfluidic liquid reservoir of the alternative embodiment according to the invention has a rigid wall region, an extensible, in particular elastic, wall region and an openable wall region, wherein the expandable wall region is designed, in the state mounted in the recess of the microfluidic chip, the actuator of the microfluidic chip and wherein the openable wall region is designed to contact the liquid channel access of the microfluidic chip in the state mounted in the recess of the microfluidic chip.
- microfluidic liquid reservoir can advantageously be kept sterile more easily and thereby the storage of sensitive liquids can be simplified.
- the microfluidic liquid reservoir in particular the rigid wall region of the microfluidic liquid reservoir, may also have a groove and / or a spring / projection in order to be replaced by a corresponding one Spring / projection and / or groove of a microfluidic chip, in particular a recess of a microfluidic chip to be connected to the microfluidic chip.
- the openable wall region is also formed here in the form of a reversibly or irreversibly openable lid or in the form of a reversibly or irreversibly openable membrane.
- a lid that can be reversibly opened can be designed in such a way that the lid opens on the basis of a mechanical mechanism, for example by moving the lid, when receiving the liquid reservoir in a recess of a microfluidic chip and when removing the liquid reservoir from a recess of a microfluidic chips closes again.
- An irreversibly openable lid can also be designed, for example, in such a way that the lid opens on the basis of a mechanical mechanism, for example by removing or displacing the lid, when receiving the liquid reservoir in a recess of a microfluidic chip.
- a reversibly openable membrane may in this case also be, for example, a perforated, elastic membrane whose perforations are impervious to liquid under normal pressure and permeable to liquid when exposed to a certain pressure, in particular due to an expansion-related enlargement.
- An irreversibly openable membrane may in this case also be a membrane which is destroyed during opening or when receiving the liquid reservoir in a recess of a microfluidic chip and thus opened.
- Another object of the present invention is a microfluidic kit / system, which is a microfluidic chip of the first described embodiment of the invention and a microfluidic fluid reservoir of the first described embodiment of the invention or a microfluidic Chip of the alternative, inventive embodiment and a microfluidic liquid reservoir of the alternative embodiment according to the invention comprises.
- the two parts can either be made separately from each other and filled or produced together.
- FIG. 1a shows a first embodiment of a microfluidic liquid reservoir 2 according to the invention.
- FIG. 1a shows that the liquid reservoir 2 has a rigid wall region 9 and an openable wall region 10 and is completely filled with a liquid 8.
- the openable wall region 10 is designed in the form of a reversibly or irreversibly openable cover 10.
- FIG. 1a shows that the rigid wall region 9 of the microfluidic liquid reservoir 2 has a spring / projection 11 in order to be connected to the microfluidic chip 1 by a corresponding groove 12 of the recess 3 of the microfluidic chip 1 described below.
- FIG. 1b 1 shows a first embodiment of a microfluidic chip 1 according to the invention, which comprises a recess 3 for receiving a liquid reservoir 2, an expandable membrane 4 adjoining the recess 3, an actuator 5 and a liquid channel access 6 adjoining the recess 3.
- FIG. 1b further shows that the actuator 5 comprises a, adjacent to the expandable membrane 4 pressure channel 5.
- the expandable membrane 4 can be stretched into the recess 3 by the actuator 5 or pressure channel 5 with volume displacement.
- the microfluidic chip 1 can be constructed from a structured base substrate 1a and a structured support substrate 1b, the expandable membrane 4 being arranged between the base substrate and the support substrate 1b.
- Figure 1c shows a first embodiment of a microfluidic kit according to the invention in the unaktu faced state.
- Figure 1c illustrates that the structure is based on the fact that the in FIG. 1a shown microfluidic liquid reservoir 2 in the recess 3 of the in FIG. 1b introduced microfluidic chip 1 according to the invention introduced and thereby mounted.
- Figure 1c further illustrates that the in FIG. 1a shown liquid reservoir 2 for receiving in the recess 3 of in FIG. 1b 1, wherein the openable wall region 10 of the liquid reservoir 2-in the state of the liquid reservoir 2 mounted in the recess 3 of the microfluidic chip 1-contacts the expandable membrane 4 and the liquid channel access 6 of the microfluidic chip 1.
- the rigid wall regions 9 at least partially contact the lateral walls of the recess 3.
- Figure 1d shows the kit Figure 1c in the actuated state.
- Figure 1d illustrates that by applying a pressure to the pressure channel 5, the expandable membrane 4 can be stretched under volume displacement in the liquid reservoir 2 mounted in the recess 3, in order in this way a liquid 8 from the liquid reservoir 2 through the liquid channel access 6 into a liquid channel. 7 to move.
- FIG. 2a shows a second embodiment of a microfluidic fluid reservoir according to the invention 2,2 '.
- a configured liquid reservoir can advantageously be used both with the previously described first embodiment of a microfluidic chip 1 according to the invention and with the second embodiment of a microfluidic chip 1 'according to the invention described in detail below.
- FIG. 2a shows that this liquid reservoir 2,2 'a rigid wall portion 9,9' has a stretchable, in particular elastic, wall portion 10a, 10a 'and an openable wall portion 10b, 10b' and is completely filled with a liquid 8.
- the openable wall portion 10b, 10b ' is designed to the
- the expandable wall region 10a, 10a ' is designed to contact the expandable membrane 4 of a chip 1 according to the invention of the first embodiment or the actuator 5' of a chip 1 'according to the invention described later in detail second embodiment.
- two expandable surfaces namely the expandable membrane 4 of the microfluidic chip 1 and the expandable wall region 10a of the microfluidic liquid reservoir, are then adjacent to one another and form a "double membrane". Further shows FIG.
- FIG. 2b shows a second embodiment of a microfluidic chip 1 'according to the invention.
- FIG. 2b shows that the microfluidic chip 1 'while a recess 3' for receiving a in FIG. 2a shown liquid reservoir 2,2 'with a rigid wall portion 9,9', a stretchable, in particular elastic, wall portion 10,10a 'and an openable wall portion 10b, 10b', an 'adjacent to the recess 3', actuator 5 'and a, to the recess 3 'adjacent, liquid channel access 6' includes.
- the actuator 5 ' is designed to contact a stretchable wall region 10a, 10a' of a liquid reservoir 2,2 'mounted in the recess 3'. Further shows FIG.
- FIG. 2b in that the actuator 5 'comprises a pressure channel 5' adjoining the recess 3 '. Further shows FIG. 2b in that by applying a pressure to the pressure channel 5 ', an expandable wall region 10a, 10a,' of a liquid reservoir 2,2 'mounted in the recess can be stretched in a simple manner into the liquid reservoir 2,2' with volume displacement.
- Figure 2c shows a second embodiment of a microfluidic kit according to the invention in the unaktu faced state.
- Figure 2c illustrates that the structure is based on the fact that the in FIG. 2a shown, microfluidic liquid reservoir 2,2 'in the recess 3' of the in FIG. 2b shown microfluidic chip 1 'according to the invention introduced and thereby mounted.
- Figure 2d shows the kit Figure 2c in the actuated state.
- Figure 2d illustrates that by applying a pressure to the pressure channel 5 'of the expandable wall portion 10a, 10a' can be stretched under volume displacement in the mounted in the recess 3 'liquid reservoir 2,2' into, in this way a liquid 8 from the liquid reservoir. 2 2 'through the liquid channel access 6' into a liquid channel 7 'to move.
- Figure 2d further shows that the openable wall portion 10b, 10b 'was formed in the form of an irreversible, openable membrane, which was destroyed during the actuation of the liquid 8 and thus opened.
- FIG. 3a shows an enlarged, schematic, perspective view of the first embodiment of the inventive microfluidic chip 1 with a capped by a stretchable membrane 4 pressure chamber fifth FIG. 3a illustrates that the recess 3 of the microfluidic chip 1 has a groove 12 to be connected by a corresponding spring / projection 11 of a microfluidic liquid reservoir 2 with the microfluidic liquid reservoir 2.
- FIG. 3b shows a larger section of the in FIG. 3a shown microfluidic chips 1 after insertion of a microfluidic liquid reservoir 2 with a spring / projection 11 in the recess 3 and the groove 12th
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Abstract
Description
Die vorliegende Erfindung betrifft mikrofluidische Chips, mikrofluidische Flüssigkeitsreservoirs, mikrofluidische Kits sowie Verfahren zu deren Betrieb.The present invention relates to microfluidic chips, microfluidic fluid reservoirs, microfluidic kits and methods for their operation.
Labor-auf-dem-Chip-Systeme (LOC) (Englisch: "Lab-on-a-chip") bestehen zumeist aus strukturierten Teilen, auf denen ein biologischer oder chemischer Analyse- oder Produktionsablauf stattfindet. Flüssigkeiten werden bei solchen Systemen meist auf dem Chip selbst abgeschlossen gelagert oder dem Chip über Schläuche zugeführt. Hierbei kann jedoch das Aktuieren der Flüssigkeit und/oder das Gewährleisten einer ausreichend hohen Sterilität der Flüssigkeiten problematisch sein.Lab-on-a-chip (LOC) systems typically consist of structured parts that undergo a biological or chemical analysis or production process. Liquids are usually stored in such systems on the chip itself or supplied to the chip via hoses. In this case, however, the actuation of the liquid and / or ensuring a sufficiently high sterility of the liquids can be problematic.
Aus der
Die vorliegende Erfindung bietet Zweikomponenten-Lösungen, die auf einer Trennung von mikrofluidischem Chip und Flüssigkeitsreservoir und einer Flüssigkeitsaktuation über eine dehnbare Fläche basieren. Eine Trennung von Chip und Flüssigkeitsreservoir kann sich dabei vorteilhaft auf die Lagerung und den Austausch von empfindlichen, insbesondere biologisch-aktive Reagenzien enthaltenden, Flüssigkeiten auswirken. Durch eine dehnbare Fläche kann dabei eine einfache und/oder robuste Flüssigkeitsaktuierung mit einem gegebenenfalls hohen Maß an Sterilität erreicht werden.The present invention provides two-component solutions based on separation of the microfluidic chip and liquid reservoir and liquid actuation across a stretchable surface. A separation of the chip and the liquid reservoir can have an advantageous effect on the storage and exchange of sensitive, in particular biologically active reagents containing liquids. By a stretchable surface can thereby a simple and / or robust liquid actuation with an optionally high degree of sterility can be achieved.
Gegenstand der vorliegenden Erfindung ist ein mikrofluidischer Chip, welcher
- eine Ausnehmung zur insbesondere lösbaren Aufnahme eines Flüssigkeitsreservoirs, beispielsweise eines im Folgenden beschriebenen Flüssigkeitsreservoirs,
- eine, an die Ausnehmung angrenzende, dehnbare, insbesondere elastische, Membran,
- einen Aktor und
- einen, an die Ausnehmung angrenzenden, Flüssigkeitskanalzugang,
- a recess for the particular detachable reception of a liquid reservoir, for example a liquid reservoir described below,
- a, adjacent to the recess, stretchable, in particular elastic membrane,
- an actor and
- a, adjacent to the recess, liquid channel access,
Vorteilhafterweise kann durch die dehnbare Membran, insbesondere bei Verwendung eines entsprechend ausgelegten, später erläuterten Flüssigkeitsreservoir, die Aktuierungsseite von der Flüssigkeitsseite getrennt werden. Dadurch kann wiederum eine hohe Sterilität der verwendeten Flüssigkeiten gewährleistet werden. Zudem können bei einem derartigen mikrofluidischen Chip Flüssigkeiten auf einfachere und/oder robustere Weise aktuiert werden als bei vielen bekannten mikrofluidischen Chips. Weiterhin kann bei einem derartigen mikrofluidischen Chip, wenn dies gewünscht ist, das Flüssigkeitsreservoir erst direkt vor der Anwendung geöffnet und/oder angeschlossen werden und dadurch die Lagerung vereinfacht und die Adaptionsfähigkeit des Systems erhöht werden.Advantageously, can be separated from the liquid side by the expandable membrane, in particular when using a suitably designed, later explained liquid reservoir, the Aktuierungsseite. This in turn ensures a high sterility of the fluids used. In addition, in such a microfluidic chip liquids can be actuated in a simpler and / or more robust manner than in many known microfluidic chips. Furthermore, in such a microfluidic chip, if desired, the liquid reservoir can be opened and / or connected only directly before use, thereby simplifying the storage and increasing the adaptability of the system.
Der mikrofluidische Chip kann insbesondere ein Chiplabor beziehungsweise Labor-auf-dem-Chip-System beziehungsweise Westentaschenlabor, beispielsweise zur Analyse von Wasser und/oder Blut, sein.In particular, the microfluidic chip can be a chip laboratory or laboratory-on-the-chip system or west pocket laboratory, for example for the analysis of water and / or blood.
Die Ausnehmung kann dabei insbesondere derart ausgebildet sein, dass ein Flüssigkeitsreservoir in die Ausnehmung, insbesondere flüssigkeitsdicht und/oder gasdicht, eingeschoben und/oder eingerastet (eingeklippt) und/oder eingeschraubt werden kann. Insbesondere kann die Ausnehmung zur Aufnahme eines Flüssigkeitsreservoirs mit einem starren Wandungsbereich und einem öffenbaren Wandungsbereich oder eines Flüssigkeitsreservoirs mit einem starren Wandungsbereich, einem dehnbaren, insbesondere elastischen, Wandungsbereich und einen öffenbaren Wandungsbereich, ausgebildet sein. Die dehnbare Membran ist dabei vorzugsweise dazu ausgebildet, bei einem Flüssigkeitsreservoir mit einem starren und einem öffenbaren Wandungsbereich den öffenbaren Wandungsbereich oder bei einem Flüssigkeitsreservoir mit einem starren, einem dehnbaren und einen öffenbaren Wandungsbereich den dehnbaren Wandungsbereich eines in der Ausnehmung montierten Flüssigkeitsreservoirs zu kontaktieren. Der Flüssigkeitskanalzugang ist dabei in beiden Fällen vorzugsweise dazu ausgebildet, den öffenbaren Wandungsbereich eines in der Ausnehmung montierten Flüssigkeitsreservoirs zu kontaktieren.The recess may in particular be designed such that a liquid reservoir in the recess, in particular liquid-tight and / or gas-tight, inserted and / or locked (clipped) and / or can be screwed. In particular, the recess for receiving a liquid reservoir having a rigid wall area and an openable wall area or a liquid reservoir with a rigid wall area, a stretchable, in particular elastic, wall area and an openable wall area, be formed. The expandable membrane is preferably designed to contact the expandable wall region of a liquid reservoir mounted in the recess in the case of a liquid reservoir having a rigid and an openable wall region. In both cases, the liquid channel access is preferably designed to contact the openable wall region of a liquid reservoir mounted in the recess.
Der mikrofluidische Chip, insbesondere die Ausnehmung des mikrofluidischen Chips, kann weiterhin eine Nut und/oder eine Feder/Auskragung aufweisen, um durch eine korrespondierende Feder/Auskragung und/oder Nut eines mikrofluidischen Flüssigkeitsreservoirs, insbesondere eines starren Wandungsbereichs eines mikrofluidischen Flüssigkeitsreservoirs, mit dem mikrofluidischen Flüssigkeitsreservoir verbunden zu werden.The microfluidic chip, in particular the recess of the microfluidic chip, can furthermore have a groove and / or a spring / projection in order to communicate with the microfluidic through a corresponding spring / protrusion and / or groove of a microfluidic liquid reservoir, in particular a rigid wall region of a microfluidic liquid reservoir Liquid reservoir to be connected.
Die dehnbare Membran kann dabei unter Volumenverdrängung in ein in der Ausnehmung angeordnetes, insbesondere montiertes Flüssigkeitsreservoir hinein dehnbar sein, insbesondere um eine Flüssigkeit aus dem Flüssigkeitsreservoir in den Flüssigkeitskanalzugang zu bewegen. Das von der dehnbaren Membran verdrängte Volumen kann dabei dem bewegten Flüssigkeitsvolumen entsprechen. Insofern der Flüssigkeitsbehälter neben Flüssigkeit noch ein Gas, beispielsweise Luft, enthält, kann - aufgrund einer Kompression des Gases - das bewegte Flüssigkeitsvolumen geringer sein als das von der dehnbaren Membran verdrängte Volumen.The expandable membrane can be stretched into a recess, in particular mounted liquid reservoir in volume displacement, in particular to move a liquid from the liquid reservoir into the liquid channel access. The volume displaced by the expandable membrane can correspond to the moving volume of liquid. Insofar as the liquid container in addition to liquid still contains a gas, for example air, may - due to compression of the gas - the liquid volume moved be less than the displaced volume of the expandable membrane.
Der Aktor kann dabei sowohl in der dehnbaren Membran integriert sein als auch separat zur dehnbaren Membran, beispielsweise angrenzend an die dehnbare Membran, ausgebildet sein. Zum Beispiel kann der Aktor ein pneumatischer Aktor (beispielsweise ein mit externer Druckluft betriebener Aktor), ein thermischer Aktor (beispielsweise ein durch Gasgenerierung betriebener Aktor), ein piezoelektrischer Aktor und/oder ein mechanischer Aktor sein.The actuator can be integrated in both the expandable membrane and separately to the expandable membrane, for example, adjacent to the expandable membrane, be formed. For example, the actuator may be a pneumatic actuator (for example, an actuator operated with external compressed air), a thermal actuator (for example, an actuator operated by gas generation), a piezoelectric actuator, and / or a mechanical actuator.
Im Rahmen einer Ausführungsform umfasst der Aktor dabei einen an die dehnbare Membran angrenzenden Druckkanal. Durch Anlegen eines Drucks an denIn one embodiment, the actuator comprises a pressure channel adjacent to the expandable membrane. By applying a pressure to the
Druckkanal kann die dehnbare Membran so auf einfache Weise unter Volumenverdrängung in die Ausnehmung hinein gedehnt werden.Pressure channel, the expandable membrane can be stretched in a simple manner under volume displacement in the recess.
Der Flüssigkeitskanalzugang kann dabei beispielsweise derart ausgebildet sein, dass sich der Flüssigkeitskanalzugang bei der Aufnahme eines Flüssigkeitsreservoirs öffnet und/oder beim Entfernen eines Flüssigkeitsreservoirs schließt. Beispielsweise kann der Flüssigkeitskanalzugang derart ausgebildet sein, dass sich der Flüssigkeitskanalzugang auf der Basis eines mechanischen Mechanismus bei der Aufnahme eines Flüssigkeitsreservoirs öffnet und beim Entfernen des Flüssigkeitsreservoirs wieder schließt. Auf diese Weise kann beim Auswechseln des Flüssigkeitsreservoirs vorteilhafterweise verhindert werden, dass Verunreinigungen in den Flüssigkeitskanal gelangen und dass Flüssigkeit aus dem Flüssigkeitskanal zurück in die Aussparung fließt. Der Flüssigkeitskanalzugang kann weiterhin oder alternativ dazu ventilartig ausgebildet sein. Beispielsweise kann der Flüssigkeitskanalzugang eine perforierte, elastische Membran aufweisen, deren Perforationen unter Normaldruck flüssigkeitsundurchlässig und bei Beaufschlagung mit einem bestimmten Druck, insbesondere aufgrund einer dehnungsbedingten Vergrößerung, flüssigkeitsdurchlässig sind.The liquid channel access can be designed, for example, such that the liquid channel access opens when a liquid reservoir is received and / or closes when a liquid reservoir is removed. For example, the liquid channel access may be designed such that the liquid channel access opens on the basis of a mechanical mechanism when receiving a liquid reservoir and closes again when the liquid reservoir is removed. In this way, when replacing the liquid reservoir, it can be advantageously prevented that impurities enter the liquid channel and that liquid from the liquid channel flows back into the recess. The liquid channel access may further or alternatively be designed like a valve. For example, the liquid channel access may comprise a perforated, elastic membrane whose perforations are liquid-impermeable under normal pressure and liquid-permeable upon application of a certain pressure, in particular due to expansion-induced enlargement.
Ein weiterer Gegenstand der vorliegenden Erfindung ist ein mikrofluidisches Flüssigkeitsreservoir, beispielsweise ein teilweise oder vollständig mit einer Flüssigkeit gefülltes, mikrofluidisches Flüssigkeitsreservoir, zur insbesondre lösbaren Aufnahme in einer Ausnehmung eines zuvor beschriebenen mikrofluidischen Chips. Im Rahmen einer Ausführungsform weist das Flüssigkeitsreservoir einen starren Wandungsbereich und einen öffenbaren Wandungsbereich auf, wobei der öffenbare Wandungsbereich dazu ausgebildet ist, in dem in der Ausnehmung des mikrofluidischen Chips montierten Zustand, die dehnbare Membran und den Flüssigkeitskanalzugang des mikrofluidischen Chips zu kontaktieren. Im Rahmen einer anderen Ausführungsform weist das Flüssigkeitsreservoir einen starren Wandungsbereich, einen dehnbaren, insbesondere elastischen, Wandungsbereich und einen öffenbaren Wandungsbereich auf, wobei der dehnbare Wandungsbereich dazu ausgebildet ist, in dem in der Ausnehmung des mikrofluidischen Chips montierten Zustand, die dehnbare Membran des mikrofluidischen Chips, insbesondere unter Ausbildung einer Doppelmembran, zu kontaktieren und wobei der öffenbare Wandungsbereich dazu ausgebildet ist, in dem in der Ausnehmung des mikrofluidischen Chips montierten Zustand, den Flüssigkeitskanalzugang des mikrofluidischen Chips zu kontaktieren.Another object of the present invention is a microfluidic fluid reservoir, for example, a partially or completely filled with a liquid, microfluidic fluid reservoir for insbesondre releasably receiving in a recess of a previously described microfluidic chip. In one embodiment, the liquid reservoir has a rigid wall region and an openable wall region, wherein the openable wall region is configured to contact the microfluidic chip in the recess, the expandable membrane and the liquid channel access of the microfluidic chip. In another embodiment, the liquid reservoir has a rigid wall region, a stretchable, in particular elastic, wall region and an openable wall region, wherein the expandable wall region is designed, in the state mounted in the recess of the microfluidic chip, the expandable membrane of the microfluidic chip to contact, in particular with the formation of a double membrane, and wherein the openable wall region is formed, in which in the Recess of the microfluidic chip mounted state to contact the liquid channel access of the microfluidic chip.
Ein derartiges abgeschlossenes, mikrofluidisches Flüssigkeitsreservoir kann vorteilhafterweise einfacher steril gehalten werden und dadurch die Lagerung von empfindlichen Flüssigkeiten vereinfacht werden.Such a closed, microfluidic liquid reservoir can advantageously be kept sterile more easily and thus the storage of sensitive liquids can be simplified.
Das mikrofluidische Flüssigkeitsreservoir, insbesondere der starre Wandungsbereich des mikrofluidischen Flüssigkeitsreservoirs, kann eine Nut und/oder eine Feder/Auskragung aufweisen, um durch eine korrespondierende Feder/Auskragung und/oder Nut eines mikrofluidischen Chips, insbesondere einer Ausnehmung eines mikrofluidischen Chips, mit dem mikrofluidischen Chip verbunden zu werden.The microfluidic fluid reservoir, in particular the rigid wall region of the microfluidic fluid reservoir, can have a groove and / or a spring / projection in order to engage with the microfluidic chip through a corresponding spring / cantilever and / or groove of a microfluidic chip, in particular a recess of a microfluidic chip to be connected.
Im Rahmen einer weiteren Ausführungsform ist der öffenbaren Wandungsbereich in Form eines reversibel oder irreversibel, öffenbaren Deckels oder in Form einer reversibel oder irreversibel, öffenbaren Membran ausgebildet.Within the scope of a further embodiment, the openable wall region is designed in the form of a reversibly or irreversibly openable cover or in the form of a reversibly or irreversibly openable membrane.
Beispielsweise kann ein reversibel öffenbarer Deckel derart ausgebildet sein, dass sich der Deckel auf der Basis eines mechanischen Mechanismus, beispielsweise durch Verschieben des Deckels, bei der Aufnahme des Flüssigkeitsreservoirs in einer Ausnehmung eines mikrofluidischen Chips öffnet und beim Entfernen des Flüssigkeitsreservoirs aus einer Ausnehmung eines mikrofluidischen Chips wieder schließt.For example, a reversibly openable lid can be designed such that the lid opens on the basis of a mechanical mechanism, for example by moving the lid, when receiving the liquid reservoir in a recess of a microfluidic chip and when removing the liquid reservoir from a recess of a microfluidic chip closes again.
Ein irreversibel öffenbarer Deckel kann beispielsweise derart ausgebildet sein, dass sich der Deckel auf der Basis eines mechanischen Mechanismus, beispielsweise durch Abnehmen oder Verschieben des Deckels, bei der Aufnahme des Flüssigkeitsreservoirs in einer Ausnehmung eines mikrofluidischen Chips öffnet.An irreversibly openable lid can be designed, for example, such that the lid opens on the basis of a mechanical mechanism, for example by removing or displacing the lid, when receiving the liquid reservoir in a recess of a microfluidic chip.
Eine reversibel öffenbare Membran kann beispielsweise eine perforierte, elastische Membran sein, deren Perforationen unter Normaldruck flüssigkeitsundurchlässig und bei Beaufschlagung mit einem bestimmten Druck, insbesondere aufgrund einer dehnungsbedingten Vergrößerung, flüssigkeitsdurchlässig sind.A reversibly openable membrane can be, for example, a perforated, elastic membrane whose perforations are liquid-impermeable under normal pressure and liquid-permeable when exposed to a certain pressure, in particular due to an expansion-related enlargement.
Eine irreversibel öffenbare Membran kann beispielsweise eine Membran sein, die beim Aktuieren oder bei der Aufnahme des Flüssigkeitsreservoirs in einer Ausnehmung eines mikrofluidischen Chips zerstört und damit geöffnet wird.An irreversibly openable membrane may, for example, be a membrane which is destroyed during opening or when receiving the liquid reservoir in a recess of a microfluidic chip and thus opened.
Ein weiterer Gegenstand der vorliegenden Erfindung ist ein mikrofluidischer Chip einer alternativen erfindungsgemäßen Ausgestaltung, bei dem - ebenso wie bei dem mikrofluidischen Chip in der zuerst beschriebenen erfindungsgemäßen Ausgestaltung - eine Flüssigkeit aus einem Flüssigkeitsreservoir über eine dehnbare Fläche aktuiert wird. Im Gegensatz zu dem mikrofluidischen Chip der zuerst beschriebenen erfindungsgemäßen Ausgestaltung, ist hierbei die dehnbare Fläche jedoch Bestandteil der Wandung des Flüssigkeitsreservoirs und nicht Bestandteil des Chips selbst. Insbesondere umfasst der mikrofluidische Chip der alternativen erfindungsgemäßen Ausgestaltung,
- eine Ausnehmung zur insbesondere lösbaren Aufnahme eines Flüssigkeitsreservoirs mit einem starren Wandungsbereich, einen dehnbaren, insbesondere elastischen, Wandungsbereich und einen öffenbaren Wandungsbereich, beispielsweise der im folgenden beschriebenen alternativen Ausgestaltung,
- einen, an die Ausnehmung angrenzenden, Aktor und
- einen, an die Ausnehmung angrenzenden, Flüssigkeitskanalzugang,
- a recess for the in particular releasably receiving a liquid reservoir with a rigid wall region, a stretchable, in particular elastic, wall region and an openable wall region, for example the alternative embodiment described below,
- one, adjacent to the recess, and actuator
- a, adjacent to the recess, liquid channel access,
Auch bei einem derartigen mikrofluidischen Chip kann bei Verwendung eines entsprechend ausgelegten, später erläuterten Flüssigkeitsreservoirs vorteilhafterweise durch den dehnbaren Wandungsbereich die Aktuierungsseite von der Flüssigkeitsseite getrennt werden. Dadurch kann wiederum eine hohe Sterilität der verwendeten Flüssigkeiten gewährleistet werden. Zudem können auch bei einem derartigen mikrofluidischen Chip Flüssigkeiten auf einfachere und/oder robustere Weise aktuiert werden als bei vielen bekannten mikrofluidischen Chips. Weiterhin kann auch bei einem derartigen mikrofluidischen Chip, wenn dies gewünscht ist, das Flüssigkeitsreservoir erst direkt vor der Anwendung geöffnet und/oder angeschlossen werden und dadurch die Lagerung vereinfacht und die Adaptionsfähigkeit des Systems erhöht werden.Even with such a microfluidic chip, the actuation side can advantageously be separated from the liquid side when using a suitably designed, later-described liquid reservoir, by the expandable wall region. This in turn ensures a high sterility of the fluids used. In addition, even in such a microfluidic chip liquids can be actuated in a simpler and / or more robust manner than in many known microfluidic chips. Furthermore, even with such a microfluidic chip, if desired, the liquid reservoir can be opened and / or connected only directly before use, thereby simplifying storage and increasing the adaptability of the system.
Der mikrofluidische Chip kann auch hierbei ein Chiplabor beziehungsweise Labor-auf-dem-Chip-System beziehungsweise Westentaschenlabor, beispielsweise zur Analyse von Wasser und/oder Blut, sein.The microfluidic chip can here also be a chip laboratory or laboratory-on-the-chip system or west pocket laboratory, for example for the analysis of water and / or blood.
Die Ausnehmung kann auch hierbei derart ausgebildet sein, dass ein Flüssigkeitsreservoir in die Ausnehmung, insbesondere flüssigkeitsdicht und/oder gasdicht, eingeschoben und/oder eingerastet (eingeklippt) und/oder eingeschraubt werden kann.The recess can also be formed in this case such that a liquid reservoir in the recess, in particular liquid-tight and / or gas-tight, inserted and / or locked (clipped) and / or can be screwed.
Der mikrofluidische Chip, insbesondere die Ausnehmung des mikrofluidischen Chips, kann auch hierbei eine Nut und/oder eine Feder/Auskragung aufweisen, um durch eine korrespondierende Feder/Auskragung und/oder Nut eines mikrofluidischen Flüssigkeitsreservoirs, insbesondere eines starren Wandungsbereichs eines mikrofluidischen Flüssigkeitsreservoirs, mit dem mikrofluidischen Flüssigkeitsreservoir verbunden zu werden.The microfluidic chip, in particular the recess of the microfluidic chip, may in this case also have a groove and / or a spring / projection in order to engage with a corresponding spring / cantilever and / or groove of a microfluidic liquid reservoir, in particular a rigid wall region of a microfluidic liquid reservoir microfluidic fluid reservoir to be connected.
Der Aktor kann auch hierbei ein pneumatischer Aktor (beispielsweise ein mit externer Druckluft betriebener Aktor), ein thermischer Aktor (beispielsweise ein durch Gasgenerierung betriebener Aktor), ein piezoelektrischer Aktor und/oder ein mechanischer Aktor sein.The actuator can also be a pneumatic actuator (for example an actuator operated with external compressed air), a thermal actuator (for example an actuator operated by gas generation), a piezoelectric actuator and / or a mechanical actuator.
Im Rahmen einer Ausführungsform umfasst der Aktor auch hierbei einen an die Ausnehmung angrenzenden Druckkanal. Durch Anlegen eines Drucks an den Druckkanal kann ein dehnbarer, insbesondere elastischer, Wandungsbereich eines in der Ausnehmung montierten Flüssigkeitsreservoirs auf einfache Weise unter Volumenverdrängung in das Flüssigkeitsreservoir hinein gedehnt werden. Der Aktor kann dabei dazu ausgebildet sein, einen dehnbaren, insbesondere elastischer, Wandungsbereich eines in der Ausnehmung montierten Flüssigkeitsreservoirs zu kontaktieren.In one embodiment, the actuator also comprises a pressure channel adjacent to the recess. By applying a pressure to the pressure channel, a stretchable, in particular elastic, wall region of a liquid reservoir mounted in the recess can be stretched in a simple manner into the liquid reservoir with volume displacement. The actuator can be designed to contact a stretchable, in particular elastic, wall region of a liquid reservoir mounted in the recess.
Der Flüssigkeitskanalzugang kann auch hierbei beispielsweise derart ausgebildet sein, dass sich der Flüssigkeitskanalzugang bei der Aufnahme eines Flüssigkeitsreservoirs öffnet und/oder beim Entfernen eines Flüssigkeitsreservoirs schließt. Beispielsweise kann der Flüssigkeitskanalzugang derart ausgebildet sein, dass sich der Flüssigkeitskanalzugang auf der Basis eines mechanischen Mechanismus bei der Aufnahme eines Flüssigkeitsreservoirs öffnet und beim Entfernen des Flüssigkeitsreservoirs wieder schließt. Auf diese Weise kann beim Auswechseln des Flüssigkeitsreservoirs vorteilhafterweise verhindert werden, dass Verunreinigungen in den Flüssigkeitskanal gelangen und dass Flüssigkeit aus dem Flüssigkeitskanal zurück in die Aussparung fließt. Der Flüssigkeitskanalzugang kann weiterhin oder alternativ dazu ventilartig ausgebildet sein. Beispielsweise kann der Flüssigkeitskanalzugang eine perforierte, elastische Membran aufweisen, deren Perforationen unter Normaldruck flüssigkeitsundurchlässig und bei Beaufschlagung mit einem bestimmten Druck, insbesondere aufgrund einer dehnungsbedingten Vergrößerung, flüssigkeitsdurchlässig sind. Der Flüssigkeitskanalzugang ist dabei vorzugsweise dazu ausgebildet, den öffenbaren Wandungsbereich eines in der Ausnehmung montierten Flüssigkeitsreservoirs zu kontaktieren.In this case too, the liquid channel access may, for example, be designed such that the liquid channel access opens when a liquid reservoir is received and / or closes when a liquid reservoir is removed. For example, the liquid channel access may be configured such that the liquid channel access opens on the basis of a mechanical mechanism when receiving a liquid reservoir and when Removal of the liquid reservoir closes again. In this way, when replacing the liquid reservoir, it can be advantageously prevented that impurities enter the liquid channel and that liquid from the liquid channel flows back into the recess. The liquid channel access may further or alternatively be designed like a valve. For example, the liquid channel access may comprise a perforated, elastic membrane whose perforations are liquid-impermeable under normal pressure and liquid-permeable upon application of a certain pressure, in particular due to expansion-induced enlargement. The liquid channel access is preferably designed to contact the openable wall region of a liquid reservoir mounted in the recess.
Ein weiterer Gegenstand der vorliegenden Erfindung ist ein mikrofluidisches Flüssigkeitsreservoir, beispielsweise ein teilweise oder vollständig mit einer Flüssigkeit gefülltes, mikrofluidisches Flüssigkeitsreservoir, einer alternativen erfindungsgemäßen Ausgestaltung, welches zur insbesondere lösbaren Aufnahme in einer Ausnehmung eines mikrofluidischen Chips der alternativen erfindungsgemäßen Ausgestaltung ausgebildet ist. Insbesondere weist ein mikrofluidisches Flüssigkeitsreservoir der alternativen erfindungsgemäßen Ausgestaltung einen starren Wandungsbereich, einen dehnbaren, insbesondere elastischen, Wandungsbereich und einen öffenbaren Wandungsbereich auf, wobei der dehnbare Wandungsbereich dazu ausgebildet ist, in dem in der Ausnehmung des mikrofluidischen Chips montierten Zustand, den Aktor des mikrofluidischen Chips zu kontaktieren und wobei der öffenbare Wandungsbereich dazu ausgebildet ist in dem in der Ausnehmung des mikrofluidischen Chips montierten Zustand, den Flüssigkeitskanalzugang des mikrofluidischen Chips zu kontaktieren.Another object of the present invention is a microfluidic fluid reservoir, for example, a partially or completely filled with a liquid, microfluidic fluid reservoir, an alternative embodiment of the invention, which is designed for releasably receiving in particular in a recess of a microfluidic chip of the alternative embodiment of the invention. In particular, a microfluidic liquid reservoir of the alternative embodiment according to the invention has a rigid wall region, an extensible, in particular elastic, wall region and an openable wall region, wherein the expandable wall region is designed, in the state mounted in the recess of the microfluidic chip, the actuator of the microfluidic chip and wherein the openable wall region is designed to contact the liquid channel access of the microfluidic chip in the state mounted in the recess of the microfluidic chip.
Insbesondere ein derartiges abgeschlossenes, mikrofluidisches Flüssigkeitsreservoir kann vorteilhafterweise einfacher steril gehalten werden und dadurch die Lagerung von empfindlichen Flüssigkeiten vereinfacht werden.In particular, such a closed, microfluidic liquid reservoir can advantageously be kept sterile more easily and thereby the storage of sensitive liquids can be simplified.
Das mikrofluidische Flüssigkeitsreservoir, insbesondere der starre Wandungsbereich des mikrofluidischen Flüssigkeitsreservoirs, kann auch hierbei eine Nut und/oder eine Feder/Auskragung aufweisen, um durch eine korrespondierende Feder/Auskragung und/oder Nut eines mikrofluidischen Chips, insbesondere einer Ausnehmung eines mikrofluidischen Chips, mit dem mikrofluidischen Chip verbunden zu werden.The microfluidic liquid reservoir, in particular the rigid wall region of the microfluidic liquid reservoir, may also have a groove and / or a spring / projection in order to be replaced by a corresponding one Spring / projection and / or groove of a microfluidic chip, in particular a recess of a microfluidic chip to be connected to the microfluidic chip.
Im Rahmen einer Ausführungsform ist der öffenbaren Wandungsbereich auch hierbei in Form eines reversibel oder irreversibel, öffenbaren Deckels oder in Form einer reversibel oder irreversibel, öffenbaren Membran ausgebildet.Within the scope of one embodiment, the openable wall region is also formed here in the form of a reversibly or irreversibly openable lid or in the form of a reversibly or irreversibly openable membrane.
Beispielsweise kann auch hierbei ein reversibel öffenbarer Deckel derart ausgebildet sein, dass sich der Deckel auf der Basis eines mechanischen Mechanismus, beispielsweise durch Verschieben des Deckels, bei der Aufnahme des Flüssigkeitsreservoirs in einer Ausnehmung eines mikrofluidischen Chips öffnet und beim Entfernen des Flüssigkeitsreservoirs aus einer Ausnehmung eines mikrofluidischen Chips wieder schließt.For example, in this case too, a lid that can be reversibly opened can be designed in such a way that the lid opens on the basis of a mechanical mechanism, for example by moving the lid, when receiving the liquid reservoir in a recess of a microfluidic chip and when removing the liquid reservoir from a recess of a microfluidic chips closes again.
Ein irreversibel öffenbarer Deckel kann auch hierbei beispielsweise derart ausgebildet sein, dass sich der Deckel auf der Basis eines mechanischen Mechanismus, beispielsweise durch Abnehmen oder Verschieben des Deckels, bei der Aufnahme des Flüssigkeitsreservoirs in einer Ausnehmung eines mikrofluidischen Chips öffnet.An irreversibly openable lid can also be designed, for example, in such a way that the lid opens on the basis of a mechanical mechanism, for example by removing or displacing the lid, when receiving the liquid reservoir in a recess of a microfluidic chip.
Eine reversibel öffenbare Membran kann auch hierbei beispielsweise eine perforierte, elastische Membran sein, deren Perforationen unter Normaldruck flüssigkeitsundurchlässig und bei Beaufschlagung mit einem bestimmten Druck, insbesondere aufgrund einer dehnungsbedingten Vergrößerung, flüssigkeitsdurchlässig sind.A reversibly openable membrane may in this case also be, for example, a perforated, elastic membrane whose perforations are impervious to liquid under normal pressure and permeable to liquid when exposed to a certain pressure, in particular due to an expansion-related enlargement.
Eine irreversibel öffenbare Membran kann auch hierbei eine Membran sein, die beim Aktuieren oder bei der Aufnahme des Flüssigkeitsreservoirs in einer Ausnehmung eines mikrofluidischen Chips zerstört und damit geöffnet wird.An irreversibly openable membrane may in this case also be a membrane which is destroyed during opening or when receiving the liquid reservoir in a recess of a microfluidic chip and thus opened.
Ein weiterer Gegenstand der vorliegenden Erfindung ist ein mikrofluidisches Kit/System, welches einen mikrofluidischen Chip der zuerst beschriebenen, erfindungsgemäßen Ausgestaltung und ein mikrofluidisches Flüssigkeitsreservoir der zuerst beschriebenen, erfindungsgemäßen Ausgestaltung oder einen mikrofluidischen Chip der alternativen, erfindungsgemäßen Ausgestaltung und ein mikrofluidisches Flüssigkeitsreservoir der alternativen erfindungsgemäßen Ausgestaltung umfasst. Die beiden Teile können dabei entweder separat von einander gefertigt und befüllt werden oder zusammen hergestellt werden.Another object of the present invention is a microfluidic kit / system, which is a microfluidic chip of the first described embodiment of the invention and a microfluidic fluid reservoir of the first described embodiment of the invention or a microfluidic Chip of the alternative, inventive embodiment and a microfluidic liquid reservoir of the alternative embodiment according to the invention comprises. The two parts can either be made separately from each other and filled or produced together.
Ein weiterer Gegenstand der vorliegenden Erfindung betrifft ein Verfahren zum Betrieb eines erfindungsgemäßen mikrofluidischen Kits/Systems, welches die Verfahrensschritte:
- a) Einführen, insbesondere Einschieben und/oder Einrasten (Einklippen) und/oder Einschrauben, des Flüssigkeitsreservoirs in die Ausnehmung des mikrofluidischen Chips,
- b) Dehnen der dehnbaren Membran des mikrofluidischen Chips und/oder des dehnbaren Wandungsbereichs des Flüssigkeitsreservoirs unter Volumenverdrängung in das Flüssigkeitsreservoir hinein, und
- c) Bewegen von Flüssigkeit aus dem Flüssigkeitsreservoir durch den Flüssigkeitskanalzugang in den Flüssigkeitskanal des mikrofluidischen Chips,
- a) insertion, in particular insertion and / or engagement (clipping) and / or screwing, of the liquid reservoir into the recess of the microfluidic chip,
- b) stretching the expandable membrane of the microfluidic chip and / or the expandable wall region of the liquid reservoir into the liquid reservoir under volume displacement, and
- c) moving liquid from the liquid reservoir through the liquid channel access into the liquid channel of the microfluidic chip,
Weitere Vorteile und vorteilhafte Ausgestaltungen der erfindungsgemäßen Gegenstände werden durch die Zeichnungen veranschaulicht und in der nachfolgenden Beschreibung erläutert. Dabei ist zu beachten, dass die Zeichnungen nur beschreibenden Charakter haben und nicht dazu gedacht ist, die Erfindung in irgendeiner Form einzuschränken. Es zeigen
- Fig. 1a
- einen schematischen Querschnitt durch eine erste Ausgestaltung eines erfindungsgemäßen, mikrofluidischen Flüssigkeitsreservoirs;
- Fig. 1 b
- einen schematischen Querschnitt durch eine erste Ausgestaltung eines erfindungsgemäßen, mikrofluidischen Chips;
- Fig. 1 c
- einen schematischen Querschnitt durch eine erste Ausgestaltung eines erfindungsgemäßen, mikrofluidischen Kits, welches aus dem, in
Fig. 1a gezeigten Flüssigkeitsreservoir und dem, inFig. 1b gezeigten Chip zu- sammengesetzt ist, im unaktuierten Zustand; - Fig. 1d
- einen schematischen Querschnitt durch das in
Fig. 1c gezeigte Kit im aktuierten Zustand; - Fig. 2a
- einen schematischen Querschnitt durch eine zweite Ausgestaltung eines erfindungsgemäßen, mikrofluidischen Flüssigkeitsreservoirs;
- Fig. 2b
- einen schematischen Querschnitt durch eine zweite Ausgestaltung eines erfindungsgemäßen, mikrofluidischen Chips;
- Fig. 2c
- einen schematischen Querschnitt durch eine zweite Ausgestaltung eines erfindungsgemäßen, mikrofluidischen Kits, welches aus dem, in
Fig. 2a gezeigten Flüssigkeitsreservoir und dem, inFig. 2b gezeigten Chip zu- sammengesetzt ist, im unaktuierten Zustand; - Fig. 2d
- einen schematischen Querschnitt durch das in
Fig. 2c gezeigte Kit im aktuierten Zustand; - Fig. 3a
- eine vergrößerte, schematische, perspektivische Ansicht der ersten Ausgestaltung des erfindungsgemäßen, mikrofluidischen Chips; und
- Fig. 3b
- eine schematische, perspektivische Ansicht der ersten Ausgestaltung des erfindungsgemäßen mikrofluidischen Kits.
- Fig. 1a
- a schematic cross section through a first embodiment of a microfluidic fluid reservoir according to the invention;
- Fig. 1 b
- a schematic cross section through a first embodiment of a microfluidic chip according to the invention;
- Fig. 1 c
- a schematic cross section through a first embodiment of a microfluidic kit according to the invention, which consists of the, in
Fig. 1a shown liquid reservoir and the, inFig. 1b shown chip, in the unaktuierten state; - Fig. 1d
- a schematic cross section through the in
Fig. 1c shown kit in the actuated state; - Fig. 2a
- a schematic cross section through a second embodiment of a microfluidic fluid reservoir according to the invention;
- Fig. 2b
- a schematic cross section through a second embodiment of a microfluidic chip according to the invention;
- Fig. 2c
- a schematic cross section through a second embodiment of a microfluidic kit according to the invention, which consists of the, in
Fig. 2a shown liquid reservoir and the, inFig. 2b shown chip, in the unaktuierten state; - Fig. 2d
- a schematic cross section through the in
Fig. 2c shown kit in the actuated state; - Fig. 3a
- an enlarged, schematic, perspective view of the first embodiment of the microfluidic chip according to the invention; and
- Fig. 3b
- a schematic, perspective view of the first embodiment of the microfluidic kit according to the invention.
Flüssigkeitskanalzugang 6,6' eines erfindungsgemäßen Chips der ersten 1 oder zweiten 1' Ausgestaltung zu kontaktieren. Der dehnbare Wandungsbereich 10a,10a' ist dabei dazu ausgebildet, die dehnbare Membran 4 eines erfindungsgemäßen Chips 1 der ersten Ausgestaltung oder den Aktor 5' eines erfindungsgemäßen Chips 1' der später im Detail beschriebenen zweiten Ausgestaltung zu kontaktieren. Im Fall der Montage in einem erfindungsgemäßen Chips 1' der ersten Ausgestaltungen liegen anschließend zwei dehnbare Fläche, nämlich die dehnbare Membran 4 des mikrofluidischen Chips 1 und der dehnbare Wandungsbereich 10a des mikrofluidischen Flüssigkeitsreservoirs aneinander an und bilden eine "Doppelmembran". Weiterhin zeigt
Claims (10)
wobei die dehnbare Membran (4) durch den Aktor (5) unter Volumenverdrängung in die Ausnehmung (3) hinein dehnbar ist.
wherein the expandable membrane (4) by the actuator (5) under volume displacement in the recess (3) is stretchable.
wobei der dehnbare Wandungsbereich (10a') eines in der Ausnehmung angeordneten Flüssigkeitsreservoirs (2') durch den Aktor (5') unter Volumenverdrängung in das Flüssigkeitsreservoir (2') hinein dehnbar ist.
wherein the expandable wall region (10a ') of a liquid reservoir (2') arranged in the recess can be stretched by the actuator (5 ') with volume displacement into the liquid reservoir (2').
Applications Claiming Priority (1)
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DE102009045685A DE102009045685A1 (en) | 2009-10-14 | 2009-10-14 | Microfluidic chip |
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EP2322277A1 true EP2322277A1 (en) | 2011-05-18 |
EP2322277B1 EP2322277B1 (en) | 2018-04-04 |
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EP10179869.2A Active EP2322277B1 (en) | 2009-10-14 | 2010-09-27 | Microfluid chip |
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US (1) | US20110086433A1 (en) |
EP (1) | EP2322277B1 (en) |
DE (1) | DE102009045685A1 (en) |
ES (1) | ES2676152T3 (en) |
Cited By (1)
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EP2796200A3 (en) * | 2013-04-26 | 2014-11-19 | Robert Bosch Gmbh | Method and apparatus for producing a microfluid analysis cartridge |
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KR101337136B1 (en) * | 2012-05-30 | 2013-12-05 | 충북대학교 산학협력단 | Droplet-based microfluidic system integrated with diaphragm feeder |
DE102012222719A1 (en) | 2012-12-11 | 2014-06-12 | Robert Bosch Gmbh | Film bag for storing a fluid and device for providing a fluid |
DE102013201297A1 (en) | 2013-01-28 | 2014-07-31 | Robert Bosch Gmbh | A fluid storage unit and method of making a fluid storage unit |
DE102013207193A1 (en) * | 2013-04-22 | 2014-10-23 | Robert Bosch Gmbh | Microhydraulic system, especially for use in planar microfluidic laboratories |
DE102013209866B4 (en) * | 2013-05-28 | 2021-11-04 | Robert Bosch Gmbh | Device with a predetermined fluid displacement |
EP2905079A1 (en) * | 2014-02-10 | 2015-08-12 | Robert Bosch Gmbh | Device for storing a fluid in a microfluidic system, method for operating and method for producing such a device |
DE102015226417A1 (en) | 2015-12-22 | 2017-06-22 | Robert Bosch Gmbh | Microfluidic device, method for manufacturing and method for operating a microfluidic device |
DE102017220525A1 (en) * | 2017-11-17 | 2019-05-23 | Robert Bosch Gmbh | Adapter for sample entry into a microfluidic device |
FR3074069A1 (en) * | 2017-11-28 | 2019-05-31 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | DEVICE FOR INJECTING A FLUID SAMPLE |
DE102020210276A1 (en) | 2020-08-13 | 2022-02-17 | Robert Bosch Gesellschaft mit beschränkter Haftung | Microfluidic device and method for its manufacture |
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Also Published As
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US20110086433A1 (en) | 2011-04-14 |
DE102009045685A1 (en) | 2011-04-21 |
ES2676152T3 (en) | 2018-07-17 |
EP2322277B1 (en) | 2018-04-04 |
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