EP4182084A1 - Probenträger und rotationsvorrichtung - Google Patents
Probenträger und rotationsvorrichtungInfo
- Publication number
- EP4182084A1 EP4182084A1 EP21783225.2A EP21783225A EP4182084A1 EP 4182084 A1 EP4182084 A1 EP 4182084A1 EP 21783225 A EP21783225 A EP 21783225A EP 4182084 A1 EP4182084 A1 EP 4182084A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- sample
- cooling
- chamber
- sample carrier
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 65
- 238000003384 imaging method Methods 0.000 title 1
- 238000012800 visualization Methods 0.000 title 1
- 238000001816 cooling Methods 0.000 claims description 115
- 238000010438 heat treatment Methods 0.000 claims description 88
- 239000007788 liquid Substances 0.000 claims description 67
- 238000000137 annealing Methods 0.000 claims description 31
- 238000004458 analytical method Methods 0.000 claims description 19
- 238000009413 insulation Methods 0.000 claims description 15
- 238000004925 denaturation Methods 0.000 claims description 14
- 230000036425 denaturation Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 230000002277 temperature effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 6
- 239000000523 sample Substances 0.000 description 165
- 108020004414 DNA Proteins 0.000 description 34
- 239000003570 air Substances 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000003752 polymerase chain reaction Methods 0.000 description 6
- 239000011541 reaction mixture Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 102000053602 DNA Human genes 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 244000052769 pathogen Species 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009396 hybridization Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 206010001526 Air embolism Diseases 0.000 description 1
- 241001678559 COVID-19 virus Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 108091028043 Nucleic acid sequence Proteins 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000012252 genetic analysis Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000010839 reverse transcription Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000001226 triphosphate Substances 0.000 description 1
- 235000011178 triphosphate Nutrition 0.000 description 1
- 125000002264 triphosphate group Chemical class [H]OP(=O)(O[H])OP(=O)(O[H])OP(=O)(O[H])O* 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/50273—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
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/52—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples
- B01L7/525—Heating or cooling apparatus; Heat insulating devices with provision for submitting samples to a predetermined sequence of different temperatures, e.g. for treating nucleic acid samples with physical movement of samples between temperature zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/54—Heating or cooling apparatus; Heat insulating devices using spatial temperature gradients
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0647—Handling flowable solids, e.g. microscopic beads, cells, particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0647—Handling flowable solids, e.g. microscopic beads, cells, particles
- B01L2200/0663—Stretching or orienting elongated molecules or particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0689—Sealing
-
- 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
- B01L2300/0803—Disc shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0861—Configuration of multiple channels and/or chambers in a single devices
- B01L2300/088—Channel loops
-
- 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
- B01L2300/18—Means for temperature control
- B01L2300/1805—Conductive heating, heat from thermostatted solids is conducted to receptacles, e.g. heating plates, blocks
-
- 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
- B01L2300/18—Means for temperature control
- B01L2300/1894—Cooling means; Cryo cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0409—Moving fluids with specific forces or mechanical means specific forces centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0409—Moving fluids with specific forces or mechanical means specific forces centrifugal forces
- B01L2400/0412—Moving fluids with specific forces or mechanical means specific forces centrifugal forces using additionally coriolis forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
- B01L2400/0403—Moving fluids with specific forces or mechanical means specific forces
- B01L2400/0442—Moving fluids with specific forces or mechanical means specific forces thermal energy, e.g. vaporisation, bubble jet
- B01L2400/0445—Natural or forced convection
Definitions
- the invention relates to a sample carrier for use in a method for amplifying DNA and a rotation device which is also set up and provided for use in such a method.
- the invention relates to the use of such a sample carrier and such a rotation device in a method for amplifying DNA.
- DNA deoxyribonucleic acid or English: deoxyribonucleic acid
- DNA is often - in addition to scientific genetic analyses, paternity tests and the like - analyzed to examine existing diseases or detected to detect pathogens.
- SARS-CoV-2 due to the spread of SARS-CoV-2 and the tests required for detection, this has also become comparatively well known.
- a sample e.g. B. a smear
- RNA specific areas of a DNA contained therein (optionally RNA) are duplicated. If RNA is detected or analyzed in a sample (e.g. to detect a virus), this is first transcribed into DNA by so-called “reverse transcription” and then multiplied.
- PCR polymerase chain reaction
- DNA is typically in the form of a double helix structure, consisting of two complementary single strands of DNA.
- the DNA is first through an increased temperature of the liquid reaction mixture between typically 90 and 96 degrees Celsius separated into two individual strands ("denaturation phase").
- the temperature is then lowered again ("annealing phase", typically in the range of 50-70 degrees Celsius) in order to enable specific attachment of so-called primer molecules to the individual strands.
- the primer molecules are complementary, short DNA strands that bind to the individual strands of the DNA at a defined point.
- the primers serve as the starting point for an enzyme, the so-called polymerase, which in the so-called elongation phase fills in the basic building blocks (“dNTPs”) of the DNA to complement the existing DNA sequence of the single strand.
- dNTPs basic building blocks
- a double-stranded DNA is formed again.
- the elongation is typically performed at the same temperature as the annealing phase or at a slightly elevated temperature typically between 65 and 75 degrees Celsius. After the elongation, the temperature is increased again for the next denaturation phase.
- the primer molecules and the above Basic building blocks are also present in the reaction mixture. These are usually contained in a starting mixture to which the sample is fed.
- thermocycling This cycling of the temperature in the liquid reaction mixture between the two to three temperature ranges described above is called PCR thermocycling and is typically repeated in 30 and 50 cycles. In each cycle, the specific DNA region is amplified.
- the thermocycling of the liquid reaction mixture is implemented in a reaction vessel by controlling the external temperature.
- the reaction vessel is z. B. in a thermal block, in which the PCR thermocycling takes place by heating and cooling a located with the reaction vessel in thermal contact solid. In this way, heat from the liquid in the reaction mixture is supplied or removed.
- Alternative heating and cooling concepts for implementing PCR thermocycling include controlling the temperature of fluids (esp. air and water), which flow around the reaction vessel as well as radiation-based concepts, e.g. B. by introducing heat by IR radiation or laser radiation.
- the invention is based on the object of accelerating a polymerase chain reaction, in particular the entire course of the analysis.
- sample carrier according to the invention and the rotation device according to the invention are preferably used together, but alternatively also independently of one another (ie the sample carrier independently of the rotation device and vice versa) in a method for amplifying or detecting (“detecting”) DNA.
- a (or the inventive) sample carrier specifically at least one cavity of the sample carrier, is preferably first filled with a sample liquid that preferably or (e.g. in the case of an examination for pathogens) at least potentially contains DNA.
- the sample carrier is then rotated about a rotation axis by means of a rotation device (or the rotation device according to the invention).
- the cavity preferably the sample carrier, is heated to a high temperature by means of a heating device on a heat input side lying in (ie in particular parallel to) a plane of rotation. There is preferably no heating on the side opposite the heat input side. Due to the heating, a convection flow of the sample liquid is generated inside the cavity.
- the convection flow is generated essentially annularly, with a first flow section extending approximately parallel to the heat input side, a second flow section from the heat input side to the opposite heat discharge side (also: “cooling side”), a third flow section parallel to the heat discharge side and a fourth flow section again (from the heat discharge side) back to the heat input side.
- the sample liquid is preferably conducted through a denaturation zone (which in particular has a high temperature value), a so-called annealing zone (also: primer hybridization zone) and an extensions zone and back to the denaturation zone.
- a denaturation zone which in particular has a high temperature value
- annealing zone also: primer hybridization zone
- extensions zone and back to the denaturation zone.
- a period of circulation of a liquid particle of the sample liquid along a flow path of the convection flow is specified (in particular “controlled”) by means of the rotational speed of the rotation.
- the period of circulation of the liquid particle is also influenced by other parameters, such as e.g. B. the geometry of the cavity, the viscosity of the sample liquid, the density of the sample liquid, the resulting temperature gradient and the like.
- a temperature gradient (which is therefore aligned in a decreasing direction from the heat input side to the heat output side) is preferably perpendicular to a dominant force, in particular the centrifugal force resulting from the rotation, on the sample liquid in the cavity imprinted.
- a fluid exchange required for the polymerase chain reaction takes place between the denaturing zone and the annealing zone via the flow portions or flow sections (ie the second and fourth flow sections) directed perpendicularly to the plane of rotation described above.
- the flow portions or flow sections ie the second and fourth flow sections
- orbital period is understood here and in the following in particular to mean the period (time) that the (particularly infinitesimal) liquid particle requires to pass through the denaturation zone, the annealing zone (also: primer hybridization zone) and the extension Zone to flow back to the denaturation zone.
- the rotation time can be set to times in the range between 0.1 s and 20 s by means of the number of revolutions (thus by means of the rotation speed).
- An average flow velocity of the order of up to 22 mm/s can thus be set within the corresponding cavity, which corresponds to a reaction chamber of the sample carrier.
- a particularly fast polymerase chain reaction is made possible by such a short cycle time and/or such a high flow rate, so that advantageously process time can be saved.
- the corresponding cavity on the heat discharge side (or also: “cooling side”) opposite the heat input side is cooled to a low temperature value compared to the high temperature value on the heat input side.
- the temperature of the annealing zone (and the extensions zone optionally contained therein) can be set and in particular the sample liquid in the area of the annealing zone can be prevented from heating up increasingly or at least to a negligible extent.
- the sample carrier according to the invention is for use in the rotation-based method for duplication described above and also below established and provided for by DNA.
- the sample carrier has a disc-like base body.
- the sample carrier has a number of preferably microfluidic cavities formed in the base body, in which, in an intended method step, a sample liquid which, at least potentially (especially in the case of an analysis for the presence of pathogens), DNA (or optionally alternatively RNA ) contains is included.
- a flat side (or disk side) of the base body preferably forms a heat input side and the flat side (or disk side) facing away from this (ie the heat input side) forms in particular a heat discharge side (also referred to as “cooling side”).
- the cavity or one of possibly several cavities is formed by an annular channel--ie preferably a loop-like or ring-like channel--with a first and a second channel section.
- These two channel sections are at least indirectly fluidically connected at both longitudinal ends by means of a respective connecting section (or connecting channel).
- the first channel section is also arranged offset in the thickness direction (ie in particular in the direction of the intended axis of rotation) of the base body with respect to the second channel section. In other words, one of the two channel sections is offset towards the heat input side and the other towards the cooling side.
- disk-like is understood in particular in the sense of “plate-like”, i.e. in particular to mean that the corresponding body has a flat extension that is many times greater than its thickness - preferably fundamentally independent of the geometry of its flat Extension-limiting outer contour.
- microfluidic means in particular that the at least one cavity has dimensions of less than 0.5 or even 0.1 millimeters up to 10 to 15 millimeters. In particular, at least one dimension, for example a width or depth, is in the range of less than 0.5 millimeters. A longitudinal extent, in particular of cavities forming a channel, can also exceed the 15 millimeters described above.
- the ring channel preferably forms a process or reaction chamber in which a polymerase chain reaction (PCR for short) takes place when the sample carrier is used as intended.
- PCR polymerase chain reaction
- This is supported by the shape of the cavity as a ring channel, since a flow driven by convection and gravity can form particularly easily in this way, in particular by the respective “liquid particles” flowing through the individual channel sections one after the other in accordance with the above description.
- the liquid particles in the more heated channel section can "rise” against the centrifugal force during rotation, whereas the cooler and therefore denser or heavier liquid particles in the other channel section "sink” in the direction of the centrifugal force.
- the second and fourth flow sections described above here run through the connecting channels between the first and second channel sections.
- the offset of the first duct section and the second duct section towards the heat input side or towards the cooling side also advantageously allows the heat input and the heat output (i.e. in particular the cooling) to be primarily concentrated on the corresponding (i.e. closer) duct section affect, are preferably limited to this. In other words, the effect of cooling on the passage portion shifted toward the heat input side is reduced.
- the first channel section is on the heat input side (i.e. towards it) and the second channel section is on the cooling side of the sample carrier (i.e. H. offset towards this) arranged.
- the first channel section is preferably used for introducing heat into the sample liquid, and the second correspondingly for discharging heat. More preferably, the first and second channel sections are also aligned parallel to the direction of the centrifugal force (applied during the intended processing) (ie in particular radial to the axis of rotation about which the sample carrier is rotated when used as intended).
- the first duct section (in the above-mentioned case) has a reduced cross-sectional area (at least in regions) compared to the second duct section (which is arranged offset to the cooling side).
- the reduced cross-sectional area leads on the one hand to an increase in the flow speed and consequently also to a reduced dwell time of the individual “liquid particles” in the first channel section.
- the surface available for the heat input is usually smaller, so that the possible heat input is limited.
- the first duct section which is preferably arranged on the heat input side (i.e. offset towards it), has (in addition to or as an alternative to the reduced cross-sectional area) compared to the second duct section, which is arranged in particular on the cooling side, (at least in regions) an in Disk surface direction of the body directed, reduced channel width.
- the "attack surface" for the heat input is smaller than that for the heat output.
- the heat output can be matched to the heat input.
- this makes it possible to design the cooling in a particularly simple manner, in particular using the ambient atmosphere. Active and thus energy-intensive generation of cold can thus advantageously be omitted. Active heating, on the other hand, is regularly required anyway.
- the second channel section comprises a cooling channel and a cooling channel in an expedient embodiment, preferably in the intended flow direction of the sample liquid during processing, subsequent annealing channel designed with a channel width that is reduced compared to the cooling channel.
- the cooling channel serves to enable the process liquid to be cooled as quickly as possible.
- the cooling within the annealing channel is reduced, so that the temperature conditions here are as constant as possible.
- the cross-sectional area of the cooling channel and the annealing channel is the same and/or selected in such a way that the annealing channel has a greater “depth”, ie a greater extension in the thickness direction of the base body.
- the flow rate also remains at least approximately the same.
- the cross-sectional area of the annealing channel is also reduced compared to the cooling channel, so that the flow rate is increased here and the residence time is therefore also reduced.
- DNA basic building blocks can already be deposited inside the cooling channel on denatured DNA strands fed in from the first channel section due to the heating there.
- the annealing channel alternatively has the same channel width as the cooling channel, but in contrast to it the greater depth.
- the volume in the annealing channel is increased compared to the cooling channel, so that the cooling is opposed by a larger amount (specifically a larger volume) of sample liquid and the cooling is thus slowed down.
- the first channel section also includes two sub-chambers (or “sub-sections”), which are referred to as “denaturation channel” and “resistance channel”.
- the resistance channel is "upstream”, i.e. in the intended direction of flow ahead of the denaturation channel (and thus in particular downstream of the annealing channel).
- the resistance channel is designed with a reduced width compared to the denaturation channel, preferably with a reduced cross-sectional area. As a result, the sample liquid is accelerated in the resistance channel. in particular In particular, this resistance channel influences the flow rate in the annealing channel on the one hand and also (e.g.
- the resistance channel advantageously also represents a “control element” in terms of design for the respective temperature values within the sample liquid.
- the denaturing channel is omitted.
- the denaturing can also take place in the first channel section, which in this case is in particular designed only as a resistance channel, particularly with a suitable process control—for example, heating from the outside and/or a comparatively low rotational speed.
- the shaping (or: “structuring”) of the ring channel described above advantageously enables the cycle time and the individual temperature values to be specified (or: “control”) by means of the channel cross sections or channel profiles and/or by means of the rotational speed.
- the channel geometry can be adapted to the process parameters (e.g. heating and cooling temperature values) specified by means of an analysis device (in particular the rotation device described in more detail below) in such a way that a time limit is not (or no longer) primarily specified by heating or cooling periods, but at least 20% or more through biochemical processes.
- first and the second channel section are offset to one another in the direction of the pane surface in addition to the offset in the direction of thickness.
- the sample carrier has a thermal insulation layer.
- This underlies the second channel section at least over part of its length in the direction of the heat input side (or, depending according to viewing direction, superimposed; in general terms, the thermal insulation layer is thus arranged between the second channel section and the heat input side).
- the thermal insulation layer is only assigned to the cooling channel described above (e.g. underlaid), so that the heat input into the cooling channel is prevented or at least reduced to a negligible extent and the heat dissipation significantly predominates.
- a heat input into the subsequent annealing channel is "allowed" in this optional case, so that the sample liquid in this channel is only cooled to a lesser extent or the temperature is even approximately (ie with a difference of a few degrees Celsius, For example, equal to or less than 10 or 5 degrees Celsius) can be kept constant.
- the ring channel is connected to a bubble trap chamber in an inlet area through which the ring channel is filled (in particular with the sample liquid) when used as intended.
- an incision that connects the bubble trap chamber to the ring channel is preferably designed with such a large thickness that it is possible for gas bubbles that normally occur to pass through from the ring channel into the bubble trap chamber.
- a thickness of the gate of at least 100 microns - especially at a rotation speed of 20 Hz - is sufficient for the passage of the gas bubbles into the bubble trap chamber. Gas bubbles appear in particular due to the heating of the sample liquid.
- the annular channel is preferably filled with enough sample liquid for the sample liquid to at least partially fill the bubble trap chamber. This further simplifies the flow of the bubbles out of the ring channel into the bubble trap chamber, since there are no Liquid-gas interface needs to be overcome.
- the bubble trap chamber is expediently arranged radially on the inside of the annular channel, given the intended rotation of the sample carrier. As a result, the gas bubbles, which are lighter than the sample liquid, can “rise” against the rotation-driven gravitational field, i.e. move radially inwards.
- a bubble trap chamber is preferably provided for each of the first and second channel sections, which also preferably extend in the radial direction.
- the annular duct has a third duct section which is connected between the first and the second duct section in terms of fluid guidance, in particular downstream of the second duct section.
- This third channel section is preferably aligned (at least approximately) parallel to the first and the second channel section. Viewed in the thickness direction of the base body of the sample carrier, however, the third channel section is arranged between the first and the second channel section.
- the target temperature values in the first channel section are around 85 to 100, in particular 95 degrees Celsius, in the second channel section around 50 to 75, preferably around 60 degrees Celsius and (if available) in the third channel section around 65 to 80, preferably by about 72 degrees Celsius, e.g. to support an elongation of the DNA.
- the sample body has several of the annular channels described above, each of which has different structures (ie preferably dimensions, in particular with regard to their cross sections and widths). This results in different dwell times of the sample liquid in the individual areas, so that in a sample carrier - especially with constant heating and cooling conditions - with different borrowed process parameters (in particular different temperature values and / or cycle times), optionally with different biochemistry, can be tested.
- the rotation device according to the invention described in more detail below optionally represents an independent invention and is therefore independent of the sample carrier described above. Nevertheless, the use of the sample carrier described above in the rotation device described here and below is particularly advantageous.
- the rotation device according to the invention is set up and provided for use in the rotation-based method described above.
- the rotation device has an analysis chamber and a sample holder arranged in the analysis chamber.
- the latter is for holding at least one sample carrier, in particular the sample carrier described above, which has a number of cavities formed in the (or a) base body, in which a sample liquid that at least potentially contains DNA is received in a specified method step.
- the rotation device has a rotation drive, by means of which the sample holder is rotated about a rotation axis during normal operation.
- the rotation device has a heating device, by means of which an atmosphere in a partial area of the analysis chamber forming a heating chamber is tempered to a target heating temperature during normal operation, and a cooling device, by means of which an atmosphere in a partial area of the analytical chamber forming a cooling chamber is heated to a temperature during normal operation Target cooling temperature is tempered.
- the heating chamber and the cooling chamber are fluidically separated from one another by the sample holder, at least in cooperation with the sample carrier held thereon.
- the rotation device has a controller (also referred to as a "control device"), which is linked in terms of control technology to the rotation drive and the heating device as well as to the cooling device and is set up to specify a rotation speed of the sample holder and the target heating temperature and the target cooling temperature.
- the heating and cooling therefore preferably takes place via the respective temperature-controlled atmosphere of the heating or cooling chamber.
- the respective atmosphere is particularly preferably air. This results in a particularly simple construction of the rotation device.
- the controller is formed at least in its core by a microcontroller with a processor and a data memory, in which the functionality for carrying out the method is implemented in the form of operating software (firmware), so that the method - possibly in interaction with operating personnel - is carried out automatically when the operating software is executed in the microcontroller.
- the controller can also be formed by a non-programmable electronic component, e.g. an ASIC, in which the functionality for carrying out the method is implemented using circuitry means.
- the rotation device has a housing that surrounds the analysis chamber and thus the heating chamber and the cooling chamber together.
- the housing does not partition the analysis chamber. Rather, the subdivision into the heating chamber and the cooling chamber is effected by the sample holder or sample carrier.
- the sample holder or the sample carrier held thereon during normal operation forms a sealing gap with a housing wall, in particular a side wall of the housing. This is dimensioned in such a way that a reduction or even suppression of a gas exchange between the heating chamber and the cooling chamber is made possible.
- the width of the sealing gap ie a distance between the sample holder or sample carrier and the side wall
- the housing wall forms a type of labyrinth seal between the heating chamber and the cooling chamber with the sample holder or the sample carrier.
- Labyrinth seals regularly have a comparatively high Sealing effect in contactless sealing concepts.
- a circumferential groove is preferably formed into the housing wall, in particular the side wall, into which the sample holder or sample carrier engages.
- the sealing gap here also has dimensions of preferably equal to or less than 1 mm.
- the analysis chamber is preferably designed as a circular cylinder.
- the sample holder forms a circular disc on its own or at least with one or more sample carriers attached to it.
- the sealing gap is preferably the same all around.
- the housing can preferably be opened or dismantled for loading the sample holder and optionally also for maintenance purposes.
- a parting plane of the housing is expediently arranged in the groove described above.
- the sample holder of the rotation device is set up to accommodate the sample carrier on a heat input side (here of the sample holder) facing the heating chamber.
- a heat input side here of the sample holder
- the rotary drive is arranged in the area of the cooling chamber.
- the sample holder has at least one window connecting the heat input side and the cooling side (of the sample holder).
- a region of the number of cavities to be cooled or heated (in particular the first or second channel section) of the sample carrier is connected through this window to the cooling chamber or the heating chamber for heat transfer.
- the area to be cooled (in particular the second channel section) of the sample carrier is in connection with the cooling chamber if the sample carrier is positioned on the heat input side of the sample holder (and thus in the heating chamber).
- its (in particular second) channel section offset towards the cooling side optionally protrudes into the window or through it towards the cooling side.
- the sample carrier is on the cooling side of the sample holder is to be arranged, this applies analogously to the area to be heated.
- the sample holder has a thermal insulation layer. This is arranged in such a way that at least part of the region of the number of cavities of the sample carrier to be cooled and/or heated is shielded from the temperature effects of the heating chamber or cooling chamber during normal operation. This is the case in particular when the sample carrier itself does not have a thermal insulation layer.
- the thermal insulation layer of the sample holder is optionally formed by an element arranged separately on the sample holder, for example a material with low thermal conductivity.
- the heat insulation layer of the sample holder serves the same purpose as the heat insulation layer of the sample carrier according to the invention described above.
- the cooling device of the rotating device has a controllable valve for connecting the cooling chamber to the surroundings of the rotating device and/or a fan for (in particular actively) flooding the cooling chamber with ambient atmosphere, preferably ambient air.
- Active cooling by means of a type of air conditioning system or the like (that is to say with active refrigeration) can therefore be omitted.
- This is particularly advantageous in that this configuration—the controllable valve or the fan—is technically easy to implement.
- the target cooling temperature in the cooling chamber is specified in particular by the controller at approximately 50 degrees Celsius (ie with a deviation of, for example, +/-5 degrees Celsius).
- This temperature value which is comparatively high compared to the usual ambient temperature, results from (optionally targeted) leakage through the sealing gap described above and/or from thermal conduction effects through the sample holder.
- a temperature sensor is preferably arranged in the cooling chamber and connected to the controller for temperature control to this temperature value. When the temperature rises, the controller opens the valve or valves so that an exchange with the environment can take place. If applicable and if available, the controller also activates the fan in order to be able to transport more ambient atmosphere, in particular air, through the cooling chamber and thus increase the cooling effect.
- the controller is preferably set up to control the heating device in such a way that a temperature of approximately 80 to 120 degrees Celsius is present in the heating chamber.
- a temperature sensor is preferably also arranged in the heating chamber.
- the heating device optionally has heating wires, surface heating or the like. Since, during normal operation, the sample holder rotates with the sample carrier(s) held thereon, the atmosphere in the heating chamber is advantageously swirled and the temperature is thus homogenized. In addition, due to the movement of the sample carrier relative to the atmosphere, the convective heat transfer is improved, in particular since standing boundary layers between the sample carrier and the heating chamber that have an insulating effect are repeatedly dissolved or do not form.
- the sample carrier according to the invention described above is used in the method described at the outset.
- the sample carrier is consequently first filled with the sample liquid, which at least potentially contains DNA, and rotated about a rotation axis by means of a rotation device, optionally the rotation device according to the invention described above.
- At least the first channel section is heated to a high temperature at least in sections by means of the atmosphere tempered by the heating device, whereby a convection flow of the sample liquid is generated within the annular channel of the corresponding cavity.
- the rotation device according to the invention one can optionally be used which, instead of the heating device described above, has contact or surface heating, preferably integrated in the sample holder, for tempering the atmosphere in the heating chamber.
- the first channel section (or the one to be heated) is heated on one side by thermal conduction, for example by means of a Peltier element or a resistance heater.
- the rotation device according to the invention described above is used in the method described at the outset.
- a sample carrier other than the sample carrier according to the invention described above can also be used here.
- the sample carrier according to the invention is preferably used.
- at least one section of the cavity or one of optionally several cavities of the sample carrier is heated to a high temperature value at least in sections by means of the atmosphere that is temperature-controlled by means of the heating device, and another section (preferably the same cavity) is heated by means of the prefers cooler atmosphere chilled. Due to the heating, in particular due to the temperature difference brought about by the additional cooling, a convection flow of the sample liquid is generated within the corresponding cavity.
- FIG. 1 shows a sample carrier with a number of cavities in a schematic view of an underside
- FIG. 1 shows a sample carrier 1 in a roughly schematic manner, which is set up and provided for use in a rotation-based method for amplifying or detecting DNA, described in more detail below with reference to FIG. 4 .
- the sample carrier 1 has a disc-shaped—ie flat—base body 2 that is semicircular in the present exemplary embodiment.
- a filling chamber 4 shown here only as an example, into which a sample taken can be introduced, a process chamber 6 arranged “downstream” thereto, and a connecting channel 8 between these two.
- the size of the process chamber 6 compared to the base body 2 is shown here in a greatly exaggerated manner to clarify the properties described in more detail below.
- FIGS. 2 and 3 show two exemplary embodiments of a rotation device 10 which is also set up and provided for use in a rotation-based method for amplifying DNA, preferably together with the sample carrier 1 .
- the rotation device 10 has a housing 12 which, with its side wall 14, encloses a circular-cylindrical housing interior, referred to below as “analysis chamber 16”. Furthermore, the rotation device 10 has a sample holder 18 .
- the sample carrier 1 is held on this when the method is carried out (i.e. during normal operation).
- the sample holder 18 can be rotated about an axis of rotation 22 by means of a rotary drive 20 .
- the sample holder 18 is a turntable.
- the sample holder 18 is arranged in the analysis chamber 16 in such a way that it divides it into two parts.
- the upper part in FIGS. 2 and 3 forms a heating chamber 24.
- the rotary device 10 has a heating device 26 which is set up to heat the atmosphere, specifically the air in the heating chamber 24.
- the lower part of the analysis chamber 16 in FIGS. 2 and 3 forms a cooling chamber 28.
- the rotation device 10 has a cooling device 30 for its temperature control. In the illustrated embodiment, this includes a fan 32, by means of which the cooling chamber 28 in the intended Be- drove with a flow of cooling air, which is formed by sucked in outside air, is flowed through.
- the cooling device 30 includes a controllable valve 34 through which air can be discharged from the cooling chamber 28 into the environment or admitted without the fan 32 being activated.
- a controller of the rotation device 10 for controlling the rotation drive 20, the heating device 26 and the cooling device 30, ie the fan 32 and the valve 34 is present but not shown in detail.
- a sealing gap 36 between the side wall 14 and the sample holder 18 is kept at less than 1 mm.
- the housing 12 can be opened up by means of a joint 38 between the heating chamber 24 and the cooling chamber 28 .
- the sample holder 18 can be loaded easily and/or the rotation device 10 can be serviced.
- the outer edge of the sample holder 18 lies in a groove 40 which is worked into the side wall 14 . This creates a labyrinth seal (see FIG. 3).
- the housing 12 of the exemplary embodiment according to FIG. 2 can also be folded open in order to be able to load the sample holder 18, but not necessarily in the plane of the sample holder 18.
- the sample carrier 1 is automatically drawn into the rotating device 10—comparable to a CD or DVD drive.
- the rotation device 10 has a code reader for reading in, for example, barcodes and/or QR codes, by means of which an analysis result for the current sample can be forwarded in a specified manner to a database via a network.
- the sample carrier 1 and the sample containing DNA are provided in a first method step S1 (see FIG. 4).
- the sample liquid forms after the sample has been introduced into the filling chamber 4 and, in addition to the DNA to be amplified, also contains primer molecules, deoxynucleoside triphosphates (“dNTPs”), structural building blocks for the formation of new DNA strands as well as polymerase and co-factors of the polymerase .
- dNTPs deoxynucleoside triphosphates
- the liquid is buffered.
- a liquid is preferably stored in the filling chamber 4 or in another chamber, not shown, which is used to “wash out” the sample material from a sample carrier (e.g. a swab) and as a carrier liquid for the above-mentioned reagents.
- a sample carrier e.g. a swab
- some of these reagents are also only added in the form of upstream (dry) substances in the process chamber 6 .
- the filled sample carrier 1 is placed on the sample holder 18 and fastened to it. The sample carrier 1 rests on a heat input side 40 of the sample holder 18 located in the heating chamber 24 .
- a third method step S3 the air in the heating chamber 24 is heated to about 100 degrees Celsius by means of the heating device 26. In the method described, this represents a high temperature value.
- the rotary drive 20 drives the sample holder 18 to rotate about the axis of rotation 22 , so that each cavity of the sample carrier 1 is also rotated about the axis of rotation 22 .
- the air in the cooling chamber 28 is tempered to a low temperature value of approximately 50 degrees Celsius by means of the cooling device 30 . Due to the rotation of the sample holder 18, there is also a movement and thus mixing of the air in the heating chamber 24 and in the cooling chamber 28.
- the process chamber 6 of the sample carrier 1 has a channel structure which runs in the shape of a ring and is in turn formed by a first channel section 50 and a second channel section 52 .
- These channel sections 50 and 52 are elongated and run (at least approximately, ie optionally with an angular offset of a few, single angular degrees) parallel to one another and (at least approximately parallel) to a - in the mood-related operating state on the axis of rotation 22 perpendicular - radials.
- the two channel sections 50 and 52 are aligned in the direction of the centrifugal force during the intended rotation during the process.
- the channel sections 50 and 52 are each fluidically connected at the ends by connecting channels 54 .
- the channel sections 50 and 52 are offset from one another in the direction of the thickness of the base body 2 , ie in the direction of the axis of rotation 22 .
- the first channel section 50 is offset towards a heat source when the sample carrier 1 is in the intended operating state, ie towards the heating chamber 24 in the present exemplary embodiment of the rotation device 10 .
- the second channel section 52 is offset toward the cooling chamber 28 .
- the sample holder 18 has a window 56 through which air can flow from the cooling chamber 28 to the second channel section 52.
- the second channel section 52 protrudes beyond the level of the heat input side 40 of the sample holder 18 and thus lies in the window 56 or even protrudes to the underside, i.e. into the cooling chamber 28 beyond the sample holder 18 (not shown).
- step S3 comparatively more heat is introduced into the first channel section 50 due to its greater "closeness" to the heating chamber 24 (seen in relation to the second channel section 52) than into the second channel section 52. Due to the rotation of the sample holder 18 and the resulting heat Relative movement to the air, the convective heat exchange of the two channel sections 50 and 52 with the heating chamber 24 and the cooling chamber 28 is supported.
- a temperature gradient that runs parallel to the axis of rotation 22 forms within the channel structure of the process chamber 6 . Due to the rotation, an artificial gravitational field occurs radially to the axis of rotation 22 . Furthermore, the temperature gradient leads to differences in density in the sample liquid. These temperature-related density differences, in conjunction with the artificial gravitational field, lead to a buoyancy-driven convection flow, the main flow direction of which is fundamentally radial due to the artificial gravitational field. In other words, the main lift component is radially inward.
- liquid elements flow radially inwards due to their heating in the first channel section 50 and the associated decrease in density.
- liquid elements flow radially outwards due to the force of gravity. Since the two channel sections 50 and 52 are connected to form a ring, the liquid elements flow radially inwards from the first channel section 50 through the connecting channel 54 into the second channel section 52 and at its end back into the first channel section 50. Due to the centrifugal forces of the rotation (directed to the right in FIG.
- the second channel section 52 has two partial or “sub-chambers”, of which the radially inner one is referred to as the “cooling channel 58” and the one connected to it radially on the outside as the “annealing channel 60”.
- the cooling channel 58 has a greater width than the annealing channel 60 in the direction of the plane of the base body 2, so that the fastest possible cooling to an “annealing temperature” of about 65 degrees Celsius is made possible.
- the cross section of the annealing channel 60 is selected to be smaller than that of the cooling channel 58 so that a comparatively higher outflow speed and thus a reduced heat dissipation, as well as a lower heat loss at the transition to the first channel section 50, is made possible.
- the first channel section 50 also has two partial chambers, of which the radially outer side is referred to as the resistance channel 62 and the radially inner side as the denaturing channel 64 .
- the resistance channel 62 has a cross section that is further reduced in comparison to the annealing channel 60 and also the connecting channel 54 .
- the sample liquid is accelerated and the flow through the annealing channel 60 is also controlled (or also: predetermined).
- the temperature from, for example, 90 to 100, in particular about 95 degrees Celsius
- the present exemplary embodiment the temperature (from, for example, 90 to 100, in particular about 95 degrees Celsius) can be kept at least approximately constant due to its enlarged cross section—in the present exemplary embodiment.
- the differences from the previous exemplary embodiment lie in the dimensions of the annealing channel 60 in relation to the cooling channel 58 and in the design of the first channel section 50.
- the annealing channel 60 has the same "depth" or "height" (i.e. in the direction of the axis of rotation 22 running extent) as the cooling channel 58.
- the first channel section 50 is designed to be almost conformal over its entire length.
- resistance channel 62 and denaturation channel 64 is not made here.
- the first channel section 50 is designed in the manner of a nozzle with a comparatively elongated, tapered central part.
- Denaturation also takes place here in the tapered middle section as soon as the appropriate temperature is reached.
- This is possible in an exemplary embodiment - at least in the case of a rotary device with contact heating - in which the cross-sectional area of the first channel section 50 (in its tapered area) is 0.162 mm 2 and the second channel section 52 is designed in such a way that at a rotational speed of 10 Hz the Sample carrier 1, the sample liquid remains in the first channel section 50 for such a long time that the denaturing temperature value is reached.
- the cross-sectional area of the first channel cross-section 50 can be correspondingly reduced due to the higher flow rate then.
- the thermal insulation layer is a gas-filled “cushion”, e.g. a hollow or foamed plate.
- FIGS. A further exemplary embodiment of the process chamber 6 is shown in FIGS.
- the annealing channel 60 is narrower but deeper than the cooling channel 58 .
- the volume in the annealing channel 60 is increased, so that the heat loss can be kept low, although the thermal insulation layer 66 is only placed underneath the cooling channel 58 here.
- the denaturing channel 64--again pronounced here-- is designed in a manner comparable to the exemplary embodiment according to FIGS.
- the first and second channel sections 50 and 52 are offset from one another in a tangential direction. On the one hand, this simplifies the intermediate storage of the thermal insulation layer 66, but on the other hand it also makes it possible - particularly in the event that the base body 2 is designed to be transparent at least in the area of the process chamber 6 - to monitor the processes within the two channel sections 50 and 52, e.g by means of a fluorescence detector or the like.
- the two channel sections 50 and 52 are assigned an inlet 68 (or also: “inlet area”), via which the filling with the sample liquid takes place.
- This inlet 68 has two inlet chambers, also referred to as “bubble traps 70”, each of which is in fluid communication with one of the two channel sections 50 and 52 via a gate 72.
- the amount of sample liquid supplied is selected in such a way that after channel sections 50 and 52 have been filled as intended, i.e. when there is sample liquid in both channel sections 50 and 52 and in connecting channels 54, there is also sample liquid in bubble traps 70 parts of the sample liquid are still standing.
- the incisions 72 are dimensioned in such a way that gas bubbles, which form during normal operation due to the heating of the sample liquid, can “rise” through the liquid against the artificial gravitational field into the bubble traps 70 and collect there without “clogging” the incisions. . This is favored by the partially filled bubble traps 70.
- the dimensions of the channel sections 50 and 52 and the connecting channels 54 are selected in such a way that at rotational speeds in the range of 5 to 40 Hz, the sample liquid in the annealing chamber 60 has a temperature of about 65 degrees Celsius and in the first channel section 50 above the melting temperature of the DNA, specifically above 90 degrees Celsius, in particular at around 90 degrees Celsius.
- method steps S1 to S3 can also take place at least partially at the same time.
- the sample holder 10 does not have to stand still while the process chamber 6 is being filled.
- the heating device 26 can already heat the air in the heating chamber 24 .
- method step S3 is maintained for a specified duration. Then, in a fourth method step S4, the rotation of the sample holder 10 and the heating by means of the heating device 26 are stopped.
- the fourth method step S4 can also be initiated if a sufficiently high conversion of reagents is detected by means of the above-mentioned fluorescence detector.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Hematology (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020212253.9A DE102020212253A1 (de) | 2020-09-29 | 2020-09-29 | Probenträger und Rotationsvorrichtung |
PCT/EP2021/076286 WO2022069350A1 (de) | 2020-09-29 | 2021-09-23 | Probenträger und rotationsvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4182084A1 true EP4182084A1 (de) | 2023-05-24 |
Family
ID=78008169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21783225.2A Pending EP4182084A1 (de) | 2020-09-29 | 2021-09-23 | Probenträger und rotationsvorrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US20230226545A1 (de) |
EP (1) | EP4182084A1 (de) |
JP (1) | JP2023543064A (de) |
KR (1) | KR20230074811A (de) |
CN (1) | CN116194216A (de) |
DE (1) | DE102020212253A1 (de) |
WO (1) | WO2022069350A1 (de) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6427753B2 (ja) * | 2013-09-11 | 2018-11-28 | 国立大学法人大阪大学 | 熱対流生成用チップ、熱対流生成装置、及び熱対流生成方法 |
GB2556626A (en) * | 2016-11-16 | 2018-06-06 | Dublin Institute Of Tech | A microfluidic device |
-
2020
- 2020-09-29 DE DE102020212253.9A patent/DE102020212253A1/de active Pending
-
2021
- 2021-09-23 EP EP21783225.2A patent/EP4182084A1/de active Pending
- 2021-09-23 JP JP2023519526A patent/JP2023543064A/ja active Pending
- 2021-09-23 KR KR1020237014511A patent/KR20230074811A/ko unknown
- 2021-09-23 CN CN202180063486.1A patent/CN116194216A/zh active Pending
- 2021-09-23 WO PCT/EP2021/076286 patent/WO2022069350A1/de unknown
-
2023
- 2023-03-29 US US18/192,017 patent/US20230226545A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2023543064A (ja) | 2023-10-12 |
KR20230074811A (ko) | 2023-05-31 |
DE102020212253A1 (de) | 2022-03-31 |
WO2022069350A1 (de) | 2022-04-07 |
CN116194216A (zh) | 2023-05-30 |
US20230226545A1 (en) | 2023-07-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60214150T2 (de) | Multiformat-probenprozessierungsvorrichtungen, -verfahren und -systeme | |
DE102011083920B4 (de) | Verfahren und vorrichtung zum erzeugen von fluidisch voneinander separierten teilvolumina einer flüssigkeit | |
EP2227330B1 (de) | Mobiles schnelltestsystem für die nukleinsäureanalytik | |
EP1977830A1 (de) | Mikrofluidisches temperaturangetriebenes Ventil | |
DE60018386T2 (de) | Station zur nukleinsäurevervielfältigung für wegwerftestträger | |
EP0711603B1 (de) | System zur Inkubation von Probeflüssigkeiten | |
US20010046701A1 (en) | Nucleic acid amplification and detection using microfluidic diffusion based structures | |
DE102013203293B4 (de) | Vorrichtung und Verfahren zum Leiten einer Flüssigkeit durch einen ersten oder zweiten Auslasskanal | |
DE102008003979B3 (de) | Fluidikvorrichtung, Fluidikmodul und Verfahren zum Handhaben einer Flüssigkeit | |
EP3717850B1 (de) | Vorrichtung und verfahren zum temperieren von werkstücken | |
EP3592463B1 (de) | Verfahren zum zentrifugo-pneumatischen schalten von flüssigkeit | |
GB2502409A (en) | Droplet based assay system | |
DE102008025992A1 (de) | Titerplatte, Leseeinrichtung hierfür und Verfahren zur Detektion eines Analyten, sowie deren Verwendung | |
WO2017202648A1 (de) | Fluidikmodul, vorrichtung und verfahren zum biochemischen prozessieren einer flüssigkeit unter verwendung von mehreren temperaturzonen | |
DE102009035270A1 (de) | Ein Einweg-Multiplex-Polymerase-Kettenreaktions(PCR)-Chip und Gerät | |
US20220325272A1 (en) | Sample preparation apparatus and multi-well plate with pcr chip | |
DE102020210405B4 (de) | Kartusche für ein rotationsbasiertes und einen einseitigen Wärmeeintrag nutzendes Analyseverfahren, rotationsbasiertes Analyseverfahren und Verwendung einer Kartusche | |
EP4182084A1 (de) | Probenträger und rotationsvorrichtung | |
WO2014198703A1 (de) | Fluidhandhabungsvorrichtung und verfahren zum prozessieren einer flüssigkeit unter verwendung einer diffusionsbarriere | |
DE102020210404B4 (de) | Verfahren zum Betrieb eines Analysegeräts, Verwendung einer Kartusche und Analysegerät | |
DE102009044431A1 (de) | Vorrichtung zur Durchführung einer PCR | |
DE102019204850B4 (de) | Verfahren zur Vervielfältigung von DNA, Rotationsvorrichtung und System zur Vervielfältigung von DNA | |
DE102009001261A1 (de) | Vorrichtung und Verfahren zur Ausführung mehrerer paralleler PCR-Reaktionen im Durchflussverfahren | |
WO2022037772A1 (de) | Verfahren zur vervielfältigung von dna, rotationsvorrichtung und system zur vervielfältigung von dna | |
WO2020200351A1 (de) | Mikrotropfenrückhalteanordnung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20230216 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DERMAGNOSTIX GMBH |