This application claims priority under 35 U.S.C. §119 to patent application no. DE 10 2012 205 516.9, filed on Apr. 4, 2012 in Germany, the disclosure of which is incorporated herein by reference in its entirety.
The disclosure relates to a turret component for a reagent vessel. The disclosure also relates to a reagent vessel insertion part and to a reagent vessel. Furthermore, the disclosure relates to a method for centrifuging a material and to a method for the pressure treatment of a material.
DE 10 2010 003 223 A1 describes an apparatus for insertion into a rotor of a centrifuge. The apparatus which is of the size of a standard centrifuge tube can comprise different turrets which are arranged axially one above another. The turrets can have ducts, cavities, reaction chambers and further structures for carrying out standardized fluidic operations. Via an integrated ballpoint pen mechanism, the turrets can be rotated with regard to the positions thereof with respect to one another, as a result of which the structures of the turrets can be indexed with respect to one another. After insertion of the apparatus into a centrifuge, an updating of the ballpoint pen mechanism can be triggered by means of a centrifugal force brought about by the operation of the centrifuge. At the same time, liquids can be transferred along the force vector of the centrifugal force which has been brought about.
The disclosure provides a turret component for a reagent vessel with the features described below, a reagent vessel insertion part with the features described below, a reagent vessel with the features described below, a method for centrifuging a material with the features described below and a method for the pressure treatment of a material with the features described below.
The turret component which is realizable by means of the present disclosure and is intended for a reagent vessel is emptiable in a simple manner owing to the at least one predetermined breaking point formed on the vessel base of the at least one vessel structure. An outlet opening through which the at least one liquid and/or pulverized material poured into the vessel structure can emerge is provided just by breaking of the at least one predetermined breaking point. Owing to the at least one outlet opening which is fixedly advanceable by means of the formation of the at least one predetermined breaking point, a material flowing or dropping out of the at least one vessel structure can simply be caught by means of at least one further vessel structure, for example a further turret component.
Unlike a conventional sucking off of the at least one material poured into the at least one vessel structure, the present disclosure therefore provides simpler removal of said material. The at least one predetermined breaking point of the turret component according to the disclosure is also advantageous in relation to the customarily frequently used covering of the at least one base surface of the at least one vessel structure by means of a film, since, with a predetermined breaking point of this type, leakage of the at least one material poured into the at least one vessel structure should more seldom be of concern. By contrast, non-tight points through which the at least one poured-in material can undesirably emerge frequently occur in a covering film.
Furthermore, it is pointed out that, in the production of the turret component according to the disclosure, a capacity/vessel structure does not have to be closed by means of a film, such as, for example, a sealing film made of aluminum. Therefore, the process step which is conventionally frequently required for covering continuous cavities in a turret component by means of a film during the production of the turret component according to the disclosure can be spared. Similarly, the conventionally frequently required formation of a spike structure on a cover of a downstream turret, which is frequently required according to the prior art in order to pierce the film, is also omitted. Also the formation, which is sometimes conventionally carried out, of a double base in a turret according to the prior art, said base being covered with the film, can be omitted in the production of the turret component according to the disclosure. The turret component according to the disclosure is therefore producible with simplified geometry, since a double base is not required, in particular for implementing a switching logic.
The turret component is preferably produced as a single piece by means of a casting method or an injection molding method. The turret component according to the disclosure can therefore be produced cost-effectively by means of a method which can be carried out in a simple manner.
In an advantageous embodiment, the at least one predetermined breaking point partially frames at least one cover element in such a manner that, after breaking of the associated predetermined breaking point, the respective cover element is bendable out of a plane of the associated predetermined breaking point about a predetermined bending point. A sufficiently sized outlet opening suitable for the emergence of the at least one material poured in the at least one vessel structure is thereby reliably realizable. In addition, by means of the formation of the at least one predetermined bending point, it is possible to prevent the breaking of the predetermined breaking point from leading a turret component material which previously covered the outlet opening from dropping into a further vessel structure catching the emerging material.
In a further advantageous embodiment, the turret component has a turret outer wall which is configured in such a manner that the turret component is insertable in a reagent vessel for a centrifuge and/or for a pressure varying apparatus. As an alternative or in addition thereto, the turret component can also be insertable in an insertion part housing of a reagent vessel insertion part, which is configured in such a manner that the reagent vessel insertion part is insertable into a reagent vessel for a centrifuge and/or for a pressure varying apparatus. The turret component according to the disclosure can therefore be used for controlling a chemical reaction and/or a biochemical/molecular biological process while a material is being centrifuged, a positive pressure is being applied and/or a negative pressure is being applied. The turret component according to the disclosure is therefore suitable for a multiplicity of use possibilities.
For example, the at least one predetermined breaking point can be configured in such a manner that the predetermined breaking point is breakable by means of a centrifugal force which can be brought about during operation of the centrifuge, in the rotor device of which the reagent vessel with the turret component inserted therein is arranged, and/or by means of a compressive force which can be brought about during operation of the pressure varying apparatus, in which the reagent vessel with the turret component inserted therein is arranged. In particular, a preferred breaking force can be reliably defined in a simple manner by the formation of the predetermined breaking point. In this case, the at least one predetermined breaking point can be broken simply by bringing about a centrifugal force/or a compressive force equal to the defined breaking force. Therefore, during the operation of the centrifuge and/or of the pressure varying apparatus, an advantageous/preferred time for breaking the at least one predetermined breaking point can be set in a simple manner by correspondingly specifying the speed, the negative pressure and/or the positive pressure.
Furthermore, the turret component can have at least one holding device on and/or in the at least one vessel structure, by means of which at least one mass part is holdable on and/or in the at least one holding device by a retaining force, wherein the at least one holding device is arranged with respect to the at least one predetermined breaking point in such a manner that, after neutralization of the retaining force, the at least one freed mass part drops onto the at least one predetermined breaking point and/or onto at least one base surface which is at least partially framed by the at least one predetermined breaking point. The neutralizing of the retaining force can be reliably implemented, for example, by means of a centrifugal force brought about during the operation of the centrifuge and/or by means of a compressive force brought about during the operation of the pressure varying apparatus. Also in this embodiment, a desired/advantageous time for the emergence of the material poured in the at least one vessel structure can therefore be fixedly kept to by means of specifying the rotational speed, the negative pressure and/or the positive pressure.
The advantages enumerated in the preceding paragraphs are also realizable by means of a reagent vessel insertion part with an insertion part housing which is configured in such a manner that the reagent vessel insertion part is insertable in a reagent vessel for a centrifuge and/or for a pressure varying apparatus, and by at least one turret component, which is arranged in the insertion part housing, according to the disclosure.
In an advantageous embodiment, the reagent vessel insertion part comprises, in addition to a first turret component with the at least one predetermined breaking point, also at least one second turret component, wherein the first turret component and the second turret component are arranged with respect to each other by means of an elastic spacer component in such a manner that the first turret component and the second turret component are bringable into contact with each other by means of a centrifugal force which can be brought about during operation of the centrifuge, in the rotor device of which the reagent vessel with the reagent vessel insertion part inserted therein is arranged, and/or by means of a compressive force which can be brought about during operation of the pressure varying apparatus, in which the reagent vessel with the reagent vessel insertion part therein is arranged, in such a manner that a breaking force is transmittable to the at least one predetermined breaking point via the contact. It can therefore be ensured in a simple manner that, upon breaking of the at least one predetermined breaking point, the second turret component is already in a position in relation to the first turret component, in which position reliable catching of the material emerging from the first turret component by means of the second turret component is ensured.
For example, the reagent vessel insertion part can comprise a ballpoint pen mechanism as the elastic spacer component. A cost-effective mechanism can therefore be used for the elastic spacer component.
The advantages described above are also ensured in a reagent vessel with at least one turret component, which is arranged in the reagent vessel, according to the present disclosure.
In addition, the described advantages are realizable by carrying out the corresponding method for centrifuging a material and the corresponding method for the pressure treatment of a material.
Further features and advantages of the present disclosure are explained below with reference to the figures, in which:
a and 1b show a top view and a cross section of an embodiment of the turret component;
a and 2b show a cross section and a partial cross section of a first embodiment of a reagent vessel insertion part;
a to 7d show schematic partial illustrations of a sixth embodiment of the reagent vessel insertion part.
a and 1b show a top view and a cross section of an embodiment of the turret component.
The turret component 10 which is illustrated schematically in
The reagent vessel can be understood as meaning, for example, a (standard) test glass/test tube. Further exemplary embodiments include centrifuge tubes, 1.5 ml Eppendorf tubes, 2 ml Eppendorf tubes, 5 ml Eppendorf tubes and microtiter plates, for example 20 μl microtiter plates (per cavity). The reagent vessel can likewise be a test substrate or a disposable cartridge, which are embodied in the form of a lab-on-a-chip system on a plastic substrate the size of a plastics card. However, it is stressed that the configuration capability of the reagent vessel is not limited to the examples enumerated here. In addition, the dimensions of the reagent vessel are specified merely on the basis of a desired insertability of the reagent vessel in the centrifuge and/or in the pressure varying apparatus. However, the implementability of the technologies furthermore described according to the disclosure does not prescribe any external shape of the reagent vessel. In addition, the reagent vessel can be configured for receiving samples in a quantity which can optionally be selected from a range of a few μl to 1 l.
It is stressed that no specific types of equipment should be understood by the centrifuge and pressure varying apparatus mentioned below. Instead, the technology according to the disclosure is usable by means of any centrifuge by means of which a (minimum) centrifugal force above 20 g is exertable. Similarly, the technology according to the disclosure can be used for any pressure varying apparatus by means of which a negative pressure and/or positive pressure can be applied.
The turret component 10 can be understood in particular as meaning a turret for a reagent vessel. The turret component 10 can be configured, for example, in such a manner that it is rotatable about an axis of rotation 11 by means of a suitable mechanism which can be arranged on the turret component 10 or separately from the turret component 10. The axis of rotation 11 can run in particular centrally through the turret component 10 and/or can be oriented perpendicularly to the at least one vessel base. In particular, the turret component 10/the reagent vessel insertion part can also be configured for interaction with a ballpoint pen mechanism or can comprise a ballpoint pen mechanism. The turret component 10/the reagent vessel insertion part can hold a volume of smaller than 5 milliliters. The turret component 10 can thus be configured in particular in such a manner that it is integratable in a stack of further turrets and/or reaction chambers. By means of a ballpoint pen mechanism, turrets, reaction chambers and/or cavities (stacked axially one above another) can be positioned axially and also azimuthally with respect to one another. With regard to a possible embodiment of the ballpoint pen mechanism, reference is made to DE 2010 003 223 A1.
At least one vessel structure 14 into which at least one liquid and/or pulverized material 16 is pourable is formed on the turret component 10. In addition, the turret component 10 has at least one predetermined breaking point 20 on at least one vessel base 18 of the at least one vessel structure 14. By means of breaking of the at least one predetermined breaking point 20, at least one outlet opening can therefore be provided, through which the material 16 poured into the at least one vessel structure 14 can flow/drop out. The material 16 poured into the at least one vessel structure 14 can therefore be removed in a simple manner. As is explained more precisely below, a desired/advantageous time for the emergence of the material 16 can also be set by forming the at least one predetermined breaking point 20 for a compressive force which is to be applied for breaking of the latter.
In an advantageous embodiment, at least one predetermined breaking point 20 partially frames at least one cover element 22 in such a manner that, after breaking of the associated predetermined breaking point 20, the respective cover element 22 is bendable out of a plane of the associated predetermined breaking point 20 about a predetermined bending point 24. It is thus possible to prevent the material of the turret component 10 that has previously covered the outlet opening from dropping into a further vessel structure used for catching the emerging material 16. Instead of the at least one predetermined bending point 24, a hinge component and/or a suspending means may also be used.
The at least one predetermined breaking point 20 can be configured in particular in such a manner that the at least one predetermined breaking point 20 is breakable by means of a centrifugal force which can be brought about during operation of the centrifuge, in the rotor device of which the reagent vessel with the turret component 10 inserted therein is arranged, and/or by means of a compressive force which can be brought about during operation of the pressure varying apparatus, in which the reagent vessel with the turret component 10 inserted therein is arranged. The preferred time for the breaking of the at least one predetermined breaking point 20 can therefore be reliably set by means of a corresponding bringing about of the centrifugal force and/or of the compressive force. The at least one predetermined breaking point 20 can be configured, for example, in such a manner that the at least one predetermined breaking point 20 breaks because of a centrifugal force which is exerted by the material 16 stored in the vessel structure 14. This is the case if the centrifugal force above a threshold value, which is typically greater than 20 g, exceeds the mechanical stability of the predetermined breaking point 20. By means of different configurations of the threshold value of the respective predetermined breaking point 20 and/or different masses/tightness of the materials 16, the at least one predetermined breaking point 20 can be broken at a settable/definable time. As is explained even more precisely below, the at least one predetermined breaking point 20 can, however, be broken open at a desired time even without direct breaking of the at least one predetermined breaking point 20 by means of the centrifugal force and/or the compressive force.
The turret component 10, despite the advantageous insertability thereof, can be produced as a single piece by means of a casting method or an injection molding method. The turret component 10 is therefore producible cost-effectively. The internal volume of the turret component 10/of the reagent vessel insertion part can at least partially be made from a polymer, for example from COP, COC, PC, PA, PU, PP, PET and/or PMMA. Further materials are also suitable for forming the internal volume of the turret component 10/of the reagent vessel insertion part.
In addition, at least one duct, at least one cavity and/or at least one reaction chamber can also be formed in the turret component 10/a reagent vessel insertion part equipped therewith. Process steps and structures, such as, for example, sedimentation structures, duct structures or siphon structures for further conducting and switching at least one liquid contained in the turret component 10/the reagent vessel insertion part, can be integrated in the internal volume of the turret component 10/of the reagent vessel insertion part. In particular, at least one further subunit of the internal volume of the turret component 10/of the reagent vessel insertion part as a “storage container” can be filled with at least one liquid which carries out at least one chemical reaction and/or a biochemical/molecular biological process with a material/sample material which is subsequently poured in and is to be processed and/or investigated. The at least one “storage container” can be filled, for example, with chemicals (for example buffers), enzymes, lyophilizates, beads, dyestuffs, antibodies, antigens, receptors, proteins, DNA strands and/or RNA strands. The turret component 10/the reagent vessel insertion part can also be equipped with additional components, such, for example, valves and/or pumps. In addition, the technology according to the disclosure can also interact with a multiplicity of conventional actuation, detection and/or control units.
a and 2b show a cross section and a partial cross section of a first embodiment of a reagent vessel insertion part.
The reagent vessel insertion part 30 which is illustrated schematically in
In addition, the reagent vessel insertion part 30 comprises at least one turret component 10a, 10b and 10c arranged in the insertion part housing 32. The at least one turret component 10a, 10b and 10c can be configured in such a manner that it is rotatable about the axis of rotation 11. In addition, the at least one turret component 10a, 10b and 10c can also be adjustable (laterally) along the axis of rotation 11. As is explained more precisely below, a distance between adjacent turret components 10a, 10b and 10c can also be varied in this manner. With regard to the further fillability of the at least one turret component 10a, 10b and 10c, reference is made to the above descriptions.
The lateral adjustability of the at least one turret component 10a, 10b and 10c can be brought about, for example, by means of a ballpoint pen mechanism 36, which is merely illustrated schematically in
In the embodiment illustrated in
The reaction vessel insertion part 30 partially reproduced in
In the embodiment reproduced schematically in
The reagent vessel insertion part 30 partially reproduced schematically in
By means of specifying the actuation force Fa, from which the retaining force of the elastic spacer component 48 is neutralized such that there is contact for breaking the predetermined breaking point 20, the time of the breaking of the at least one predetermined breaking point 20 can also be set. The embodiment described here therefore also ensures the advantages mentioned above.
It is stressed in particular that, in the embodiment of
In the embodiment of
The protrusion 50 preferably makes contact with the second turret component 10b at a contact surface 52 which is located within the further vessel structure 38 of the second turret component 10b. For example, the contact surface 52 can be located on a step 54 formed in the further vessel structure 38 or on a corresponding support structure/protrusion. Instead of the step 54, it is also possible for, for example, a web or a pin to be formed in the further vessel structure 38. It is thereby ensurable that the associated predetermined breaking point 20 breaks only when the outlet opening which is exposed in this manner is advantageously positioned with respect to the further vessel structure 38.
In the case of the reagent vessel insertion part 30 partially illustrated in
In the case of the reagent vessel insertion part 30 partially reproduced schematically in
The advantageous plug and socket principle of the embodiment of
a to 7d show schematic partial illustrations of a sixth embodiment of the reagent vessel insertion part.
As an addition to the preceding embodiment, the embodiment partially reproduced schematically in
Each of the at least two vessel structures 38-1 and 38-2 of the second turret component 10b is preferably assigned a respective vessel structure 14-1 and 14-2 of the first turret component 10a. The vessel structures 14-1 and 14-2 of the first turret component 10a have respective protrusions 50-1 and 50-2 which are arranged on the contact side 58 at a distance a1 or a2, which is directed away radially from the axis of rotation 11, from an edge 66, which is adjacent to the contact side 58, of a side outer wall 68 of the first turret component 10a. A first protrusion 50-1 of a first vessel structure 14-1 of the first turret component 10a, which protrusion is assigned to the first vessel structure 38-1 of the second turret component 10b, is therefore arranged on the contact side 58 at the first distance a1, which is directed away radially from the axis of rotation 11, from the edge 66 of the side outer wall 68 of the first turret component 10a. Correspondingly, a second protrusion 50-2 of a second vessel structure 14-2 of the first turret component 10a, which protrusion is assigned to the second vessel structure 38-1 of the second turret component 10b, is arranged on the contact side 58 at the second distance a2, which is directed away radially from the axis of rotation 11, from the edge 66 of the side outer wall 68 of the first turret component 10a. This makes it possible to realize a switching logic by means of which a first material 16-1 poured into the first vessel structure 14-1 of the first turret component 10a and a different, second material 16-2 poured into the second vessel structure 14-2 of the first turret component 10a are transferable in a selective/specific manner into certain vessel structures 38-1 and 38-2 of the second turret component 10b.
a shows a rotational position of the two turret components 10a and 10b with respect to each other, in which the vessel structures 14-1 and 14-2 of the first turret component 10a are rotated through an angle of rotation a not equal to zero in relation to the vessel structures 38-1 and 38-2 that are assigned thereto of the second turret component 10b. (The angle of rotation a which is unequal to zero is illustrated as a distance in
Despite the entry of the first vessel structure 14-1 of the first turret component 10a into the second vessel structure 38-2 of the second turret component 10b, the second turret component 10b therefore does not exert any force on the predetermined breaking points 20 of the first turret component 10a. The two turret components 10a and 10b are subsequently pulled apart again from each other by means of a force Fk of a ballpoint pen mechanism (not outlined). A subsequent rotation 72 of the first turret component 10a relative to the second turret component 10b brings the two turret components 10a and 10b into a position with respect to each other in which the vessel structures 14-1 and 14-2 of the first turret component 10a are oriented with respect to the vessel structures 38-1 and 38-2, which are assigned thereto, of the second turret component 10b (see
In an advantageous development, a vessel structure 38-1 and 38-2 of the second turret component 10b can also have a plurality of support structures 60-1 and 60-2 at different positions. The vessel structures 38-1 and 38-2 of the second turret component 10b can thereby be coupled to a plurality of vessel structures 14-1 and 14-2 of the first turret component 10a. The further vessel structure 38-1 and 38-2 of the second turret component 10b can therefore advantageously be used as a mixing chamber and/or incubation chamber. In addition, a vessel structure 14-1 and 14-2 of the first turret component 10a can also have a plurality of protrusions 50-1 and 50-2 at different positions.
The embodiment described in the above paragraphs may also be combined differently with one another.
In addition, the statements made in the paragraphs above also apply to a reagent vessel insertion part according to the technology of the disclosure for a reagent vessel for a centrifuge and/or a pressure varying apparatus which is configured according to the explained reagent vessel insertion parts. The advantageous reagent vessel has an outer wall which is configured in such a manner that the reagent vessel is insertable in a centrifuge and/or in a pressure varying apparatus. In particular, the reagent vessel is configured in such a manner that a reliable support of the reagent vessel in the centrifuge under operation and/or in the pressure varying apparatus under operation is ensured. A reagent vessel for a centrifuge and/or for a pressure varying apparatus can therefore be understood as meaning a reagent vessel which, owing to the (outer) shape thereof, is readily suitable for operation of the centrifuge at a comparatively great rotational speed and/or for application of a positive pressure and/or negative pressure, which deviates greatly from the atmospheric pressure, by means of the pressure varying apparatus. The advantageous reagent vessel can have vessel structures, such as, for example, ducts, reaction chambers, storage chambers and/or active components, for example valves and/or pumps. In addition, the reaction vessel can comprise actuation, detection and control units. Chemical reactions and/or biochemical/molecular biological processes can therefore proceed in the reagent vessel in a fully automated manner.
The advantageous reagent vessel has at least one turret component which is arranged in the reagent vessel and has at least one predetermined breaking point. Furthermore, the reagent vessel can comprise, in addition to a first turret component with the at least one predetermined breaking point, also at least one second turret component, wherein the first turret component and the second turret component are arranged with respect to each other by means of an elastic spacer component in such a manner that the first turret component and the second turret component are bringable into contact with each other by means of a centrifugal force which can be brought about during operation of a centrifuge, in the rotor device of which the reagent vessel is arranged, and/or by means of a compressive force which can be brought about during operation of a pressure varying apparatus, in which the reagent vessel is arranged, in such a manner that a breaking force is transmittable to the at least one predetermined breaking point by the contact. For example, the reagent vessel can comprise a ballpoint pen mechanism as the elastic spacer component. The other embodiments described above are also applicable to the advantageous reagent vessel.
The advantages enumerated in the above paragraphs are also ensured when carrying out the method for centrifuging a material and the method for the pressure treatment of a material.
Number | Date | Country | Kind |
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10 2012 205 516.9 | Apr 2012 | DE | national |