EP4388322A2 - Dispensiervorrichtung, zentrifuge mit einer solchen dispensiervorrichtung und verfahren zum reinigen von dispensierdüsen - Google Patents
Dispensiervorrichtung, zentrifuge mit einer solchen dispensiervorrichtung und verfahren zum reinigen von dispensierdüsenInfo
- Publication number
- EP4388322A2 EP4388322A2 EP22765090.0A EP22765090A EP4388322A2 EP 4388322 A2 EP4388322 A2 EP 4388322A2 EP 22765090 A EP22765090 A EP 22765090A EP 4388322 A2 EP4388322 A2 EP 4388322A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- dispensing
- cleaning
- nozzles
- pump
- reagent
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/026—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having blocks or racks of reaction cells or cuvettes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
- B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
- B05B9/0416—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with pumps comprising rotating pumping parts, e.g. gear pump, centrifugal pump, screw-type pump
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1002—Reagent dispensers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1004—Cleaning sample transfer devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1065—Multiple transfer devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/04—Periodical feeding or discharging; Control arrangements therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N2035/00346—Heating or cooling arrangements
- G01N2035/00425—Heating or cooling means associated with pipettes or the like, e.g. for supplying sample/reagent at given temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N2035/00465—Separating and mixing arrangements
- G01N2035/00495—Centrifuges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1065—Multiple transfer devices
- G01N2035/1076—Multiple transfer devices plurality or independently movable heads
Definitions
- Dispensing device centrifuge with such a dispensing device and method for cleaning dispensing nozzles
- the invention relates to a dispensing device, a centrifuge with such a dispensing device and a method for cleaning dispensing nozzles.
- WO2018/234420 A1 discloses a centrifuge for cleaning reaction vessel units.
- This centrifuge has a rotor and a rotor space in which the rotor is rotatably mounted.
- a reaction vessel assembly is inserted into the centrifuge with its openings facing outwards so that as the rotor rotates, the reagents therein are expelled from the respective reaction vessels. As a result, the reaction vessels can be cleaned essentially without residue.
- This known centrifuge is provided with a loading and unloading device which has a linear drive in order to move reaction vessel units to be centrifuged into the rotor space and remove them from the rotor after centrifuging.
- this loading and unloading device the reaction vessel unit is pulled into the rotor and pushed out of the rotor by means of a displacement rod.
- Such a loading and unloading device allows the centrifuge to be integrated into an automatic system in which the centrifuge represents one of several work stations and the reaction vessel units are automatically transferred from one work station to another without manual intervention having to be carried out.
- the centrifuge also has a dispensing device which has a number of dispensing nozzles.
- the dispensing nozzles are arranged above the path covered by a reaction vessel unit during loading or unloading by means of the loading and unloading device and their openings point downwards, so that the reaction vessels of the reaction vessel unit can be arranged below the dispensing nozzles by means of the loading and unloading device , so that liquid reagents can be introduced from the nozzles into the respective reaction vessels in a targeted manner.
- WO2017/125598 A1 discloses another centrifuge which in turn has a loading and unloading device in which reaction vessel units are positioned by means of a rigid displacement rod.
- a centrifuge with a dispensing device is known from US 2002/0090729 A1.
- a computer control is also provided to deliver liquid solvents to multiple dispensing stations within a centrifuge chamber.
- EP 2 269723 A2 discloses a device for chemical synthesis and in particular for synthesizing nucleic acids in a large number of reaction vessels.
- the device has dispensing heads, each with a cluster of nozzles, which are connected to a large number of reagent sources. Different reagents can be dispensed with a single dispensing head.
- DE 69433 635 T2 describes a device and a method for synthesizing polymers, in particular oligonucleotides, for use on arrays.
- a dispensing device with a plurality of nozzles is used.
- US 2020/0009623 A1 discloses a device for cleaning nozzles, in which case the nozzles can be immersed in a cleaning solution which is held in a cleaning tank. Furthermore, the nozzles are cleaned using ultrasonic waves.
- DE 10 2012015 083 B3 specifies a dispensing head with a plurality of displaceable dispensers. Liquid samples are to be dispensed into a microtiter plate with this dispensing head, the dispensing head having a plurality of dispensers.
- the individual dispensers which are also referred to as microdispensers, can be individually extended out of the dispensing head for a dispensing process.
- the invention is based on the object of creating a dispensing device and a centrifuge with such a dispensing device with which small amounts of liquid reagent can be repeatedly, automatically and reliably supplied to reaction vessels, with the waste of reagent being to be kept low.
- a further object of the present invention is to provide a method for cleaning dispensing nozzles, in which the cleaning of the dispensing nozzles can be carried out fully automatically and the dispensing nozzles can be used to dispense a reagent.
- a dispensing device is provided with
- a linear drive for relatively moving a reaction vessel unit along a dispensing unit with at least two dispensing heads, which each have at least one dispensing nozzle, so that a reaction vessel unit can be arranged under the dispensing nozzles of the dispensing unit in order to fill at least one reaction vessel of the reaction vessel unit, and
- the dispensing device is characterized in that a pump valve with a first and a second input and an output is arranged in front of the two pumps, the output with the respective pump, the first input with a common supply of reagents and the second input each with an individual Reagent supply can be connected.
- This dead volume can be kept small.
- the losses of such an individual reagent are low if other reagents, in particular common reagents, are conveyed via the pump or the corresponding dispensing nozzles. Therefore, the individual supply of reagents can be used to hold very expensive reagents and to dispense them into the reaction vessels of the reaction vessel unit as required, since the losses are low if other reagents such as washing solutions, cleaning solutions, buffer solutions, etc. can be dispensed to the reaction vessels via the same dispensing head.
- Another advantage of providing individual reagent supplies is that frequently required reagents are kept in the individual reagent supplies, which can be dispensed again and again without the need to replace the reagent in the respective dead volume.
- Other reagents can be dispensed from the common reagent supply via one of the other dispensing heads. For example, a particular assay can be repeatedly dispensed using several different reagents without the need to swap out or flush the individual dead volumes of individual reagent supplies. On the one hand, this avoids losses of the individual reagents and, on the other hand, considerable time is saved since the dead volume of the individual reagent supplies does not have to be flushed. The dead volume of the individual reagent supplies only needs to be flushed if all liquid paths are flushed with cleaning solution and disinfected as part of an internal cleaning process.
- both an individual reagent and one or more common reagents can be dispensed via a dispensing head
- the dispensing head and the dispensing nozzles arranged thereon can be rinsed with a cleaning solution.
- the rinsing with a cleaning solution can be carried out fully automatically, with the corresponding valves and the corresponding pump being controlled fully automatically by means of a central control device. This allows the dispensing device to be operated over a long period of time without manual intervention being necessary, since the dispensing nozzles can be kept clean even during long periods of operation.
- the dispensing nozzles can be kept sterile and encrustation due to drying out of a saline buffer solution can be prevented.
- a dispensing head usually consists of a one-piece body and has one or more dispensing nozzles.
- the nozzles can also be variably or pivotally arranged with respect to the vertical.
- such a dispensing head can also be designed in several parts, with a dispensing head being connected to a single pump for conveying the reagents to the dispensing head. If such a dispensing head is designed in several parts, then the fluid connection can be formed internally within the individual parts of the dispensing head or also through a branching of the liquid line from the pump to the respective parts of the dispensing head.
- a distributor arrangement with an inlet and a plurality of outlets is preferably arranged between the common reagent supply and the pump valves, with every second inlet of the respective pump valve being connected to an outlet of the distributor arrangement.
- the distributor arrangement is designed in such a way that the individual outputs of the distributor arrangement can be switched individually. With the distributor arrangement, the reagents can be supplied in a targeted manner to different pumps or in a targeted manner to the respective dispensing heads from a common supply of reagents.
- the common supply of reagents can have a valve arrangement with several inputs and one output, the output of the valve arrangement being connected to one or more of the first inputs of the pump valves and a reagent supply container being able to be coupled to each of the inputs of the valve arrangement.
- This valve arrangement makes it possible for several different reagent storage containers to be provided in the common reagent storage in order to hold available different reagents for delivery to the dispensing heads.
- This valve arrangement can be connected directly to the first inputs of the pump valves or also indirectly to the first inputs of the pump valves via one or more of the distributor arrangements explained above.
- the second inputs of the pump valves are preferably designed so that they can each be coupled directly to a reagent reservoir. This means that no additional elements, such as valves or the like, are provided between the second inlet of the pump valves and the outlet of the reagent reservoir.
- the outlets of the reagent reservoirs and the second inlets of the pump valves are only connected to one another with a liquid line, such as a hose, and corresponding coupling elements.
- a shut-off valve can be arranged between the pumps and the respective dispensing head. Such a shut-off valve is used to be able to stop the flow of liquid to the respective pump head abruptly. As a result, the amount of liquid reagent dispensed with the dispensing nozzles of the respective dispensing head can be precisely metered.
- the liquid lines between the pumps and the respective dispensing heads preferably have a smaller cross section than liquid lines which lead from the pumps to the reagent reservoirs.
- the dispensing heads can each have a plurality of nozzles.
- the dispensing heads can be detachably coupled to one another.
- the dispensing heads can be arranged interchangeably on the dispensing device.
- the dispensing heads can be connected to the dispensing device or to one another by means of a magnetic coupling, by means of a screwable connection and/or by means of a detachable latching connection to the dispensing device or to one another.
- the dispensing heads preferably have a detachable hose connection in order to be able to detachably couple them to a liquid line leading to the respective dispensing head.
- the dispensing heads can each have a plurality of nozzles arranged in a row, with each dispensing head having one or more rows of nozzles and the row of nozzles each having the same number of nozzles or a different number of nozzles.
- Each dispensing head can have a single row of dispensing nozzles or multiple rows of dispensing nozzles. The same number of nozzles per row can always be provided in the individual rows of dispensing nozzles. However, it is also possible that the number of nozzles per row differs.
- Such rows with a different number of nozzles can be provided within a dispensing head, or several dispensing heads, each with a single row of nozzles, can also be connected to one another, with the individual dispensing heads being able to have rows with a different number of nozzles. If an arrangement with rows with a different number of nozzles is provided, then the arrangement can be designed in such a way that a regular grid of nozzles is formed and/or the rows alternately have a specific number of nozzles.
- a regular grid of nozzles is, in particular, a rectangular, in particular square, grid, ie four adjacent nozzles are arranged at the corners of a square.
- This arrangement of the nozzles corresponds to the positions of the reaction vessels on the respective reaction vessel unit, which is in particular a microtiter plate.
- the rectangles or squares can with their edges parallel to the Edges of the respective reaction vessel unit, which is in particular a microtiter plate, can be arranged.
- These rectangles or squares can also be arranged in a rhombic manner with respect to the reaction vessel unit, ie the edges of the rectangles or squares each enclose an angle of 45° to the outer edges of the reaction vessel unit.
- the design of a dispensing device with a different number of nozzles per row represents an independent inventive concept that can also be used independently of the first aspect of the dispensing device explained above.
- the dispensing heads can preferably be coupled to one another in a form-fitting manner. This ensures that the individual dispensing heads are positioned exactly to one another.
- the dispensing device can also have a temperature control device for temperature control of a reagent to be supplied to the dispensing head.
- This temperature control device can be formed along the liquid line between the pumps and the respective dispensing heads.
- the temperature control device can be formed, for example, from a thermally highly conductive tube that is surrounded by a heating or cooling device, such as a Peltier element.
- the tube can be made of copper, for example. It can be expedient here to coat the inner surface of the tube with an inert material or to additionally provide a thin-walled plastic tube inside the tube.
- the pump valve and/or the respective pump itself can be temperature-controlled. Due to their comparatively large masses, these parts have a high thermal capacity, so that the temperature can be kept very stable and the flow of reagents does not lead to any significant temperature change.
- the liquid line which leads from the pump valve of one of the individual reagent supplies to the respective dispensing head, is preferably no longer than 50 cm, in particular no longer than 40 cm and preferably no longer than 30 cm or no longer than 20 cm. This length has a significant impact on the dead volume of individual reagent supplies.
- the dispensing device can have a collecting basin for collecting liquid reagents dispensed with the dispensing nozzles. This catch basin is used to allow controlled removal of reagents that are conveyed through the dispensing nozzle and are not intended to be fed to a reaction vessel. These are, for example, cleaning solutions that are used to wash the dispensing nozzles. These are also the dead volumes to be removed when changing reagents.
- a centrifuge which has a rotor and a rotor space in which the rotor is arranged and rotatably mounted, the Rotor has a receiving area for receiving the reaction vessel unit, and the rotor space is limited by a housing.
- This centrifuge is characterized by a dispensing device as explained above.
- the axis of rotation of the rotor is preferably arranged parallel to a base of the dispensing device. As a result, the axis of rotation of the rotor is arranged horizontally during operation.
- Such an arrangement of the axis of rotation permits simple loading of the centrifuge with a reaction vessel unit, since this can be introduced with the openings of the reaction vessels pointing upwards when being introduced into the rotor space.
- reaction vessel units with large-volume reaction vessels e.g. microtiter plate with 96 reaction vessels
- the liquid does not necessarily adhere completely due to capillary forces in reaction vessels.
- reaction vessel units With a horizontal arrangement of the axis of rotation, such reaction vessel units can be turned once after insertion into the rotor space or into the rotor by rotating the rotor through 180°, so that their openings point downwards. Much of the liquid then flows out of the reaction vessel units and drips straight down. The remaining quantities of liquids in the reaction vessels adhering due to surface tension can then be spun out by centrifugation
- a method for cleaning dispensing nozzles in which the dispensing nozzles are arranged on at least two different dispensing heads and each dispensing head is metered with reagents using a pump and using a pump valve arranged upstream of the pump with a first and a second input and an output, the output being connected to the pump, the first input to a common supply of cleaning solution and the second input each to an individual supply of reagents containing the respective reagent, so that the respective dispensing heads can be connected to the pump valves with the pump valves if required cleaning solution is supplied even for rinsing the dispensing nozzles.
- a specific reagent is repeatedly conveyed through dispensing nozzles, there is a risk that the nozzles will become dirty.
- the reagent contains salts, for example, the salts can remain at the nozzle openings when the liquids evaporate and clog them over time.
- Other components of the reagents can also lead to contamination and clogging of the nozzles. This applies in particular if the reagent is repeatedly left in the lines and in the dispensing nozzles for a long time. To avoid such contamination, the dispensing heads and the corresponding dispensing nozzles can be rinsed with a cleaning solution from time to time.
- a common stock of cleaning solution can be provided for several dispensing heads, with an individual stock of reagents for each dispensing head or each pump is provided.
- the individual supply of reagents ie the supply of reagents predetermined for the respective pump or for the respective dispensing head, provides a reagent which can also be very expensive. Due to the individual allocation of the individual supply of reagents to the respective dispensing head, there is only a small dead volume, which is why the losses are low when the dispensing head is flushed with the cleaning solution.
- the cleaning solution is usually cheap compared to the individual reagents.
- the common supply of cleaning solution can therefore be fed to the different pumps via a branched line system. This makes it possible to clean the dispensing nozzles regularly and still keep losses of the individual reagents low.
- a further aspect of the invention relates to a cleaning adapter for a dispensing head.
- the dispensing head has one or more dispensing nozzles for dispensing a liquid reagent through the outer surface of the at least one nozzle.
- the cleaning adapter has a trough-shaped adapter body with a bottom wall, two longitudinal side walls and two end walls, which delimit an opening pointing upwards.
- the opening pointing upwards is adapted to the contour of the dispensing head in such a way that the cleaning adapter can be attached to the dispensing head in the area where the dispensing nozzles protrude in such a way that the cleaning adapter rests essentially fluid-tight on the dispensing head.
- a continuous cleaning opening is formed for each dispensing nozzle of the dispensing head, so that when the cleaning adapter is attached to the dispensing head, one of the dispensing nozzles extends through one of the through-openings.
- the dispensing nozzles are arranged in the cleaning openings with some play.
- the cleaning adapter has at least one connection opening with a connection element for connecting a line for supplying or removing a cleaning fluid.
- dispensing nozzles become soiled primarily in the area of their free tips and clog both the nozzle openings and the circumference of the tips of the dispensing nozzles.
- drops can stick to the dispensing nozzles, which are only released during the next dispensing process and may lead to a shift in the desired concentration or even contaminate the sample. There is therefore a considerable need to continuously clean such dispensing nozzles.
- a cleaning channel is formed between the respective dispensing nozzles and the inner surface of the cleaning openings of the cleaning adapter, through which on the one hand a cleaning agent for cleaning the dispensing nozzles can be conveyed along the dispensing nozzles to the free ends or tips of the dispensing nozzles in order to remove deposits on the outer circumference of the dispensing nozzles. It is also possible to suck up drops hanging on the tips of the dispensing nozzles through this cleaning channel and take them up in the cleaning adapter and forward them from there.
- the cleaning adapter is preferably shaped in such a way that the dispensing nozzles protrude only a small distance from the cleaning adapter.
- This projection is preferably no larger than 4 mm or no larger than 3 mm and in particular no larger than 2 mm. With such a low protrusion, drops at the pipette nozzles can be reliably sucked off and drawn in by the cleaning adapter.
- the clear width of the cleaning openings is preferably at least 0.1 mm, in particular at least 0.2 mm, larger than the outside diameter of the dispensing nozzles.
- the clear width should not be more than 1 mm larger than the outside diameter of the dispensing nozzle and is preferably not more than 0.5 mm larger than the outside diameter of the dispensing nozzle.
- the cleaning adapter allows the long-term operation of a dispensing device without the dispensing nozzles getting dirty and/or without undesired drops getting caught on the free ends or free tips of the dispensing nozzles after the respective dispensing processes. This prevents contamination and changes in the composition of the samples. It is possible to continuously clean the dispensing nozzles without the operation of the dispensing device being stopped and without the dispensing nozzles having to be removed for this purpose. It is also not necessary to manually intervene in the process to clean the dispensing nozzles. The cleaning process can be carried out automatically and is therefore suitable for being integrated into a process of a fully automatic dispensing device.
- the cleaning adapter can have at least two connection openings, which are preferably arranged diametrically opposite one another on the end walls.
- a line for supplying cleaning fluid and a line for drawing off cleaning fluid or hanging drops of the liquids to be dispensed can be connected to each of the two connection openings.
- the dispensing nozzles can be flushed with the line for supplying cleaning fluid. Droplets adhering to the dispensing nozzles can be sucked off with the line for drawing off cleaning fluid.
- the cleaning adapter can also be operated in such a way that cleaning fluid is supplied and discharged at the same time in order to flush the cleaning adapter itself. It is therefore expedient if the connection openings on the cleaning adapter are arranged diametrically opposite one another, so that the entire cleaning adapter is flushed.
- the cleaning adapter can be provided with an elastic sealing element on the upward-pointing opening for sealing the cleaning adapter with respect to the dispensing head.
- the sealing element can also be attached to the dispensing head itself.
- a contour of the cleaning adapter that is precisely adapted to the shape of the dispensing head without an additional sealing element is sufficient to produce a substantially fluid-tight connection between the cleaning adapter and the dispensing head, since the cleaning channels allow fluid contained in the cleaning adapter to escape through the cleaning openings, so that the pressure differences that arise between the interior of the cleaning adapter and the environment cannot become very large and thus the connection area between the cleaning adapter and the dispensing head is not subjected to great pressure.
- the fluid-tightness therefore does not have to withstand high pressures.
- the cleaning adapter is preferably provided with one or more fixing elements in order to fix the cleaning adapter on the dispensing head and/or on a dispensing device having the dispensing head.
- a dispensing head with one or more dispensing nozzles is provided in order to dispense a liquid reagent via the one or more dispensing nozzles, the dispensing head having a cleaning adapter explained above.
- the cleaning adapter can be arranged as an additional component on the dispensing head. However, the cleaning adapter can also be formed integrally on the dispensing head.
- a dispensing device is provided with a dispensing head which has at least one dispensing nozzle in order to dispense a liquid reagent via the at least one dispensing nozzle, the dispensing device having a cleaning adapter explained above and/or a dispensing head with cleaning adapter explained above and having a pump is provided, which is connected to a fluid line with the cleaning port to supply or withdraw a cleaning fluid from the cleaning adapter.
- a method for cleaning one or more dispensing nozzles of such a dispensing device in which a cleaning fluid is either supplied exclusively to the cleaning adapter, so that the dispensing nozzle(s) is/are flushed with the cleaning fluid, or is exclusively drawn off from the cleaning adapter , so that drops located on the dispensing nozzles are drawn into the cleaning adapter, or are simultaneously fed to the cleaning adapter via a connection opening and drawn off via another connection opening, so that the cleaning adapter is flushed.
- a cleaning fluid is preferably used, which is formed from one or a mixture of the following fluids:
- Alcohols such as ethanol, isopropanol, PEG, etc.
- Aqueous solution especially with surfactants, soap-like reagents, or those that are particularly good at dissolving salts and other contaminants.
- Acid such as citric acid, acetic acid.
- Base such as sodium hydroxide (NaOH), potassium hydroxide (KOH), sodium hypochlorite.
- Suitable mixtures include, for example, sodium hydroxide or potassium hydroxide with an alcohol such as ethanol or PEG.
- an alcohol such as ethanol or PEG.
- Such a mixture can also be based, for example, on an acid such as citric acid, to which an alcohol such as isopropanol or PEG has been added.
- FIG. 1 A dispensing device with a plurality of dispensing heads schematically in a block diagram
- FIG. 2 shows a fluidic unit for supplying a dispensing head from two different reservoirs of reagents in a schematic fluidic plan
- FIG. 3 shows the fluidic unit from FIG. 2 in a perspective view
- FIG. 4 shows a centrifuge with a dispensing device, schematically simplified in a partial section
- Figure 5a, 5b each different dispensing heads in a perspective view
- Figure 6a, 6b each a cleaning adapter in a perspective view and in a view from below,
- FIG. 7 shows a perspective view of a dispensing head and a cleaning adapter arranged thereon
- FIG. 8 shows the dispensing head and the cleaning adapter from FIG. 7 in a sectional view, the sectional plane being spanned by the dispensing nozzles located therein.
- the invention is explained below using an exemplary embodiment of a centrifuge 1 (FIG. 4) with a dispensing device 2 (FIGS. 1-3).
- the centrifuge 1 has a rotor 3 , a housing 4 , a drive device 5 for rotating the rotor 3 about an axis of rotation 6 .
- the rotor 3 has at least one receiving area 7 for receiving a reaction vessel unit 8.
- the reaction vessel unit 8 is usually a microtiter plate.
- Such microtiter plates can be designed with a different number of reaction vessels.
- the 6-4096 well microtiter plate is common, with 96, 384 or 1536 well microtiter plates being the most common versions.
- the individual reaction wells are so thin that a liquid normally adheres therein due to capillary forces alone, so that even if such a microtiter plate is arranged with its openings down, the liquid does not flow out. This does not apply to microtiter plates with fewer reaction vessels, which are each larger.
- Such a reaction vessel unit 8 can be inserted alone into a receiving area 7 of the rotor 3 or on a carrier unit.
- a carrier unit is preferably used which has a coupling element which can be coupled to a loading and unloading device 9 .
- a loading and unloading device 9 can be found, for example, in WO 2017/125598 A1, to which reference is made in its entirety.
- This loading and unloading device 9 has a rigid displacement rod 10 which can be detachably coupled at its free end by means of a coupling element 11 to the reaction vessel unit 8 or a carrier unit on which the reaction vessel unit 8 is located.
- the loading and unloading device 9 has a linear drive (not shown), with which the displacement rod 10 can be moved in its longitudinal direction in such a way that the reaction vessel unit 8 moves from a loading position to an unloading position 13, in which the reaction vessel unit 8 is located in the rotor 3. can be moved. With the loading and unloading device 9, the reaction vessel unit 8 can also be brought back from the unloading position 13 to the loading position 12.
- the housing 4 delimits a rotor chamber 14.
- the region of the housing 4 delimiting the rotor chamber 14 is formed from a lower shell 15, an upper shell 16, a front end wall 17 and a rear end wall 18. Further parts of the housing, which are not shown in the accompanying figures, are connected to the rear end wall.
- a ball bearing 19 in which a continuous shaft 20 of the rotor 3 is rotatably mounted.
- the center line of the shaft 20 forms the axis of rotation 6.
- the axis of rotation 6 runs parallel to a base 22 of the centrifuge 1 or dispensing device.
- the base 22 is formed by the underside of the lower shell 15 ( Figure 4).
- the rear end of the shaft 20 is coupled to the driving device 5 .
- the other part of the housing, which adjoins the rear end wall 18, contains the drive device 5, the loading and unloading device 9 and a central control device (not shown) with which all components of the centrifuge 1 and the dispensing device are controlled.
- a balcony 23 which serves to accommodate a reaction vessel unit 8 , is attached to the outside of the front end wall 17 .
- a loading and unloading opening 24 is formed in the front end wall 17 at the height of the balcony 23, through which a reaction vessel unit 8 can be introduced into the rotor chamber 14 and pushed out again.
- the loading and unloading opening 24 is provided with a hinged door 25 so that the rotor space can be closed.
- a pivotable door 25 a vertically or horizontally displaceable door can also be provided.
- the displacement rod 10 can be coupled with the coupling element 11 on a reaction vessel unit 8 or on a carrier unit.
- a carrier unit is preferably provided which has a corresponding counter-coupling element.
- the coupling element 11 can be a magnetic coupling element, for example, or can be designed as a mechanical hook element.
- the carrier unit or the reaction vessel unit 8 can be pushed out of the receiving area 7 of the rotor 3 through the loading and unloading opening 24 back onto the balcony 23 by means of the displacement rod 10 of the loading and unloading device 9 .
- the reaction vessel unit 8 can be removed from the balcony 23 by means of a robot, for example.
- reaction vessel unit 8 is on the balcony 23, it is arranged in the loading position 12, in which the centrifuge 1 can be provided with a reaction vessel unit 8 and loaded with it. If the reaction vessel unit 8 is in the receiving area 7 of the rotor 3 , the reaction vessel unit 8 is arranged in the unloading position 13 in which the reaction vessels of the reaction vessel unit 8 can be unloaded by turning the rotor 3 about the axis of rotation 6 .
- the lower shell 15 has a channel 27 which runs approximately parallel to the axis of rotation 6 .
- the channel 27 extends from the rear end wall 18 into the area of the front end wall 17, wherein it is designed to be inclined or sloping towards the front (FIG. 4).
- An outlet opening 28 is formed on the front side of the lower shell 15, at which the channel 27 opens.
- a connecting pin 29 is arranged at the outlet opening 28, to which a hose 30 can be connected.
- the hose 30 usually opens into a receptacle (not shown) in which the liquids that are spun out of the reaction vessels of the reaction vessel unit 8 in the centrifuge 1 are received.
- the container preferably has a ventilation opening, or the tube extends through the container with some play, so that liquid running out of the centrifuge through the tube 30 does not generate any back pressure in the container.
- the housing 4 essentially corresponds to that from WO 2018/234420 A1, which is why reference is made to this document in its entirety in this respect.
- a dispensing module 31 is arranged on the front end wall 17 in the area above the balcony 23 .
- the dispensing module 31 has five dispensing heads 32 each with a row of dispensing nozzles 33 .
- the dispensing heads 32 are magnetically coupled to the dispensing module 31 and to each other.
- positive-locking elements are provided, so that the position of the dispensing heads 32 is precisely aligned with respect to the dispensing module 31 and with one another.
- the positive-locking elements can be pins and corresponding, precisely fitting recesses, for example.
- the positive-locking elements can also have other shapes, such as conical, in particular circular-conical, projections with corresponding recesses. Such conical projections and corresponding recesses which are self-centering.
- the dispensing heads 32 are aligned with their dispensing nozzles 33 downwards, so that liquid reagents can be introduced from the dispensing nozzles 33 into reaction vessels of the reaction vessel unit 8, which are aligned with respect to the dispensing nozzles 33 or the dispensing heads 32 by means of the loading and unloading device 9.
- the loading and unloading device 9 thus serves as a positioning device in order to position the reaction vessel unit 8 with respect to the dispensing nozzles 33 or the dispensing heads 32 .
- the dispensing heads 32/1 to 32/5 are each coupled to a liquid line 34/1 to 34/5 in order to supply the dispensing heads 32 with a liquid reagent which is dispensed via the dispensing nozzles 33 (FIG. 1).
- the dispensing heads 32/2 to 32/5 are each connected to a pump module 35 (FIG. 2) which can supply liquid reagents from a common reagent supply 36 and from an individual reagent supply 37 to the corresponding dispensing heads 32/2 to 32/5.
- a pump module 35 FIG. 2 which can supply liquid reagents from a common reagent supply 36 and from an individual reagent supply 37 to the corresponding dispensing heads 32/2 to 32/5.
- the pump module 35 has a pump 21 .
- the pump 21 is designed as a diaphragm pump.
- diaphragm pumps can be made very compact.
- the pump can also be designed as a peristaltic pump.
- Peristaltic pumps are generally larger than diaphragm pumps.
- peristaltic pumps have the advantage that they can pump liquids in both directions in the lines connected to them. A peristaltic pump can therefore not only for dispensing reagents using the dispensing heads, but also for aspirating reagents.
- the pump modules 35 have a first input 39 and a second input 40 and an output 41 .
- the first input is connected to a 3/2-way valve 38 by means of a filter 42, which is also referred to as a pump valve.
- the pump valve 38 is also connected to the second input 40 and the pump 21 . Either the first inlet 39 or the second inlet 40 can be connected to the outlet 41 with the pump valve.
- a shut-off valve 43 is provided between the pump 21 and the outlet 41 .
- the individual reagent supplies 37 are each connected to the first inputs 39 of the pump modules 35 .
- Each individual reagent supply 37 has a single reagent supply container 44 .
- the lines between these reagent reservoirs 44 and the first inputs 39 of the pump modules 35 only have connecting couplings for detachably connecting the reagent reservoirs 44, but have no other elements such as valves, branches or the like. These lines can be kept very short in order to keep the volume they limit small.
- these lines 45 When replacing the reagent reservoirs 44 of the individual reagent supplies 37, these lines 45 have to be flushed, which means that the greater the volume of these lines 45, the greater the number of rejects.
- the second inputs 40 of the pump modules 35 are each connected to an output of a distributor arrangement 46 .
- the dispensing head 32/1 is also connected to an outlet of the distributor arrangement 46 via a liquid line, in which no pump module 35 but only a pump 21 and a shut-off valve 43 are arranged in the conveying direction to the dispensing head 32/1 one after the other.
- the distributor arrangement has five distributor valves 47 .
- the distribution valves 47 are 2/2-way valves, which can also be referred to as switching valves.
- the distributor valves 47 are arranged parallel to one another and the output of each distributor valve 47 forms an output 48 of the distributor arrangement 46.
- the inputs of the distributor valves 47 are connected to one another and lead to a common input 49 of the distributor arrangement 46.
- each outlet 48 of the manifold assembly 46 is connected to a dispensing head 32 .
- a liquid reagent which is supplied to the inlet 41 of the distributor arrangement 47, can be supplied in a targeted and individual manner to one or more of the dispensing heads 32 by the corresponding distributor valves 47 being activated become.
- the distributor arrangement 46 thus serves to distribute a specific liquid reagent to one or more of the dispensing heads 32 .
- the inlet 49 of the distributor arrangement 46 is connected to an outlet 51 of a valve arrangement 50 .
- a filter 52 is connected between the valve assembly 50 and the manifold assembly 46 .
- the valve arrangement has five valves 53 . These valves 53 are 2/2-way valves. They are arranged parallel to one another, with all the outlets of the valves 53 being connected to one another and forming the outlet 51 of the valve arrangement 50 .
- the inputs of the valves 53 each form a separate input 54 of the valve arrangement 50.
- These inputs 54 are each connected to a reagent reservoir 55 via a liquid line.
- the reagent reservoirs 55 are connected to the individual lines with a detachable coupling (not shown) so that the reagent reservoirs can be exchanged.
- the common reagent reservoir 36 thus includes the reagent reservoirs 55, the valve arrangement 50 and the distributor arrangement 46.
- the reagents that are in the different reagent reservoirs 55 can be supplied individually to the respective dispensing heads 32 by means of the valve arrangement 50 and distributor arrangement 46.
- the common reagent supply 36 comprises five reagent supply containers 55.
- the number of reagent supply containers can vary. If more reagent reservoirs 55 are provided, then correspondingly more valves 53 are to be provided on the valve arrangement.
- the distributor arrangement 46 has a separate distributor valve 47 for each dispensing head. If the number of dispensing heads 32 differs from five and, in particular, is greater, then a correspondingly different number of distributor valves 47 must be provided.
- a specific reagent from the individual supply of reagents 37 can be supplied to each of the dispensing heads 32/2 to 32/5.
- These individual reagents can be very expensive reagents, such as reagents with individually prepared biological substances, such as antibodies.
- These reagents can be automatically metered into the reaction vessels in the reaction vessel unit 8 via the dispensing heads 32 and the corresponding dispensing nozzles 33 .
- the reaction vessels are automatically and precisely arranged under the dispensing nozzles 33 by means of the loading and unloading device 9 .
- the loading and unloading device 9 preferably has a displacement sensor that detects the displacement path of the displacement element, the displacement rod 10 and thus the position of the reaction vessel unit 8 is detected. This position can also be used to infer the position of the individual reaction vessels of the reaction vessel unit 8 .
- a cleaning solution can be kept in one of the reagent storage containers 55 of the common reagent supply 36 .
- Such a cleaning solution compares favorably to the specific reagents held in the individual reagent reservoirs 44 . Even if when changing the reagents in the common reagent reservoir 36, comparatively large amounts of reagent have to be flushed in order to safely exchange the reagents in the lines from the reagent reservoir 55 via the valve arrangement 50, via the distributor arrangement 46, the pump modules 44 and the dispensing heads 32 the economic losses small.
- the common supply of reagents 36 allows several different reagents to be kept in large quantities, which can be fed to the individual dispensing heads as desired.
- the pump modules 35 (FIGS. 1, 2) thus allow individual reagents to be supplied from the individual reagent supply 37 with very little wastage and other reagents to be supplied from the common reagent supply 36, with different reagents being able to be flexibly selected here.
- the dispensing nozzles can be cleaned regularly with one or different cleaning solutions, so that continuous operation is possible without anyone having to intervene manually.
- the dispensing heads can be used to supply further reagents from the common supply of reagents 36, such as buffer solutions or the like.
- the reaction vessels can be centrifuged with the centrifuge.
- the reaction vessel unit is arranged in the rotor 3 with the openings of the reaction vessels pointing outwards, so that the contents of the reaction vessels are spun out during centrifugation.
- they can be supplied with cleaning solutions prior to centrifugation, which entrain contamination contained in the reaction vessels.
- magnetic beats can also be cleaned with the aid of so-called magnet carriers by centrifuging and adding a washing solution, with the magnetic beats being retained in reaction vessels by the magnet carrier during centrifugation.
- a washing solution is used to clean the reaction vessels and a cleaning solution is used to clean the dispensing nozzles.
- the washing solution and the cleaning solution can differ. However, it is also possible that the washing solution for washing the reaction vessels can also be used as a cleaning solution for cleaning the nozzles.
- the centrifuge according to FIG. 4 can also be modified in such a way that the reaction vessel units 8 can be arranged with the openings of the reaction vessels pointing in the direction of the axis of rotation 6 .
- the balcony 23 and the loading and unloading device 9 are to be arranged below the axis of rotation 6 .
- the reagents can be added to the individual reaction vessels of the reaction vessel unit 8 by means of the dispensing device according to FIG. 1 and then centrifuged by means of the centrifuge.
- the exemplary embodiment explained above is a centrifuge. It is also possible within the scope of the invention to design the dispensing device without a centrifuge. It is only expedient to provide a positioning device in order to position the reaction vessel unit 8 relative to the dispensing heads 32 or the dispensing nozzles 33 . In this case, either the reaction vessel unit 8 and/or the dispensing heads 32 can be moved. A linear drive can be provided for this purpose, as is used in the loading and unloading device 9 explained above. However, the reaction vessel unit 8 can also be arranged on a conveyor device, such as a conveyor belt, for example, in order to bring about the relative movement between the reaction vessel unit 8 and the dispensing heads 32 or the dispensing nozzles 33 .
- a conveyor device such as a conveyor belt
- the dispensing heads 32 of the exemplary embodiment explained above each have a row of dispensing nozzles 33 .
- the individual dispensing heads have the same number of dispensing nozzles.
- microtiter plates are known which each have a different number of reaction vessels in the successive rows. There are, for example, microtiter plates which have 16 reaction vessels in one row and 15 reaction vessels in the adjacent row, this arrangement with 15 and 16 reaction vessels being repeated again and again.
- dispensing heads For such special microtiter plates, it can be expedient to provide appropriate dispensing heads, with at least one dispensing head having 15 dispensing nozzles 33 and another dispensing head having 16 dispensing nozzles 33 .
- the position of the individual dispensing nozzles 33 is arranged on the dispensing heads 32 in such a way that they are aligned with the corresponding positions of the reaction vessels in the reaction vessel unit 8 . It is therefore expedient for the dispensing heads 32 to be fixed in an exchangeable manner on the dispensing module 31 in order to adapt the pipetting device to different types of reaction vessel units 8 .
- FIGS. 5a and 5b Two different dispensing heads, each with 8 or 16 dispensing nozzles 33, are shown in FIGS. 5a and 5b.
- These dispensing heads 32 each have a side connector 56 for connecting a liquid line and on the contact surfaces to the dispensing module 31 or to other dispensing heads 32 projections and/or recesses 57 in order to be able to establish a positive connection to the dispensing module 31 or to other dispensing heads 32.
- the connecting pieces 56 are inserted or screwed into corresponding bores in the dispensing heads 32 with a press fit. These bores open into an inner chamber 59 (FIG. 8) from which the dispensing nozzles 33 branch off.
- a through-bore is formed on each of the two end faces of the dispensing heads 32, in which either one of the connecting pieces 56 or a corresponding sealing plug 58 is arranged.
- a further aspect relates to a cleaning adapter 60 for a dispensing head 32 with at least one and preferably several dispensing nozzles 33.
- the two longitudinal side walls 63 and the two end walls 64 delimit an opening 65 pointing upwards (FIG. 6a).
- This opening 65 is adapted to the contour of the dispensing head 32 so that the cleaning adapter 60 can be attached to the dispensing head 32 from below and the opening 65 is flush with the dispensing head 32 .
- the contact area between the dispensing head 32 and the cleaning adapter 60 is then sealed in a substantially fluid-tight manner.
- Continuous cleaning openings 66 are formed in the bottom wall 62 .
- Such a cleaning opening 66 is provided for each dispensing nozzle 33 and is arranged on the bottom wall 62 in such a way that one of the dispensing nozzles 33 extends through one of the cleaning openings 66 in each case.
- the dispensing nozzles 33 are arranged in a cleaning opening 66 with little play, so that an annular cleaning channel 67 is formed between the cleaning nozzles 33 and the cleaning openings 66 .
- the dispensing nozzles 33 protrude slightly from the underside of the bottom wall 62 (FIG. 8). In the present exemplary embodiment, they protrude about 1 to 2 mm downwards on the cleaning adapter 60 .
- the outside diameter of the dispensing nozzles 33 is 1 mm and the diameter of the cleaning opening 66 is 1.5 to 3 mm.
- At the two end walls 64 is a first and second port openings 68, 69 are formed.
- a web 71 protruding upwards is formed, each of which has a through-opening in order to fasten the cleaning adapter 60 to a dispensing device by means of a screw bolt that extends through the through-opening that the lower area of the dispensing head 32, on which the dispensing nozzles 33 are arranged, is enclosed by the cleaning adapter 60 and only the dispensing nozzles 33 protrude a little downwards through the cleaning openings 66 on the cleaning adapter 60.
- These webs 71 thus form fixing elements for attaching the cleaning adapter 60 to the dispensing device.
- the fluid lines are usually flexible hoses, which are each connected to a pump for supplying or removing a cleaning fluid.
- the first connection opening 68 is connected to a fluid line for supplying a cleaning solution, which can be ethanol or an aqueous solution containing surfactants, for example.
- a cleaning solution which can be ethanol or an aqueous solution containing surfactants, for example.
- the corresponding pump is connected to a reagent reservoir containing the cleaning solution.
- the second connection opening 69 is connected to a fluid line for sucking air out of the cleaning chamber 72 .
- a corresponding air flow is generated through the cleaning channels 67 , which entrains drops of liquid hanging on the free ends or tips 73 of the dispensing nozzles 33 , sucks them through the cleaning channel 67 and discharges them from the cleaning chamber 72 .
- the liquid contained therein is fed to a waste container.
- fluid in particular the liquid cleaning solution
- the cleaning chamber 72 can also be flushed, for example by supplying cleaning solution to the cleaning chamber 72 via the first connection opening 68 and simultaneously drawing it off via the second connection opening 69 .
- the dispensing nozzles 33 can be cleaned regularly during operation without an operator having to intervene manually.
- the cleaning adapter 60 is a separate component with respect to the dispensing head 32. It is also possible within the scope of the invention for the cleaning adapter 60 to be an integral part of the dispensing head 32. This is particularly expedient if a plurality of dispensing heads 32 are arranged on a dispensing device, of which at least two or more and preferably all should be provided with a cleaning adapter 60 . An integral construction of the cleaning adapter 60 and the dispensing heads 32 can be made somewhat more compact than if the cleaning adapter 60 is provided as separate components.
- the separate cleaning adapters 60 have the advantage that they can be retrofitted to existing dispensing heads 32 at a later date.
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- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021121265.0A DE102021121265B4 (de) | 2021-08-16 | 2021-08-16 | Dispensiervorrichtung, Zentrifuge mit einer solchen Dispensiervorrichtung und Verfahren zum Reinigen von Dispensierdüsen |
| PCT/EP2022/072745 WO2023020981A2 (de) | 2021-08-16 | 2022-08-15 | Dispensiervorrichtung, zentrifuge mit einer solchen dispensiervorrichtung und verfahren zum reinigen von dispensierdüsen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4388322A2 true EP4388322A2 (de) | 2024-06-26 |
Family
ID=83193630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22765090.0A Pending EP4388322A2 (de) | 2021-08-16 | 2022-08-15 | Dispensiervorrichtung, zentrifuge mit einer solchen dispensiervorrichtung und verfahren zum reinigen von dispensierdüsen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20240359201A1 (de) |
| EP (1) | EP4388322A2 (de) |
| JP (1) | JP2024531316A (de) |
| CN (1) | CN118251598A (de) |
| CA (1) | CA3229406A1 (de) |
| DE (1) | DE102021121265B4 (de) |
| WO (1) | WO2023020981A2 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023103678A1 (de) | 2023-02-15 | 2024-08-22 | Bluecatbio Gmbh | Dispensiervorrichtung und Verfahren zum Befüllen einer Reaktionsgefäßeinheit |
| CN116553645B (zh) * | 2023-05-22 | 2026-02-10 | 安徽瑞林精科股份有限公司 | 一种废屑废液分离系统 |
| DE202023105800U1 (de) | 2023-10-06 | 2025-01-28 | Bluecatbio Gmbh | Magnetträger für Reaktionsgefäßeinheiten |
| DE202023105801U1 (de) | 2023-10-06 | 2025-01-28 | Bluecatbio Gmbh | Wuchtkörper |
| WO2025210025A1 (de) * | 2024-04-02 | 2025-10-09 | Larkwick Gmbh | Zusatzeinheit für eine dispensiervorrichtung |
| LU506763B1 (de) * | 2024-04-02 | 2025-10-03 | Larkwick Gmbh | Zusatzeinheit für eine Dispensiervorrichtung |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57188159U (de) * | 1981-05-27 | 1982-11-29 | ||
| JPS5887462A (ja) * | 1981-11-20 | 1983-05-25 | Hitachi Ltd | 液体試料分析装置 |
| JPS59182368A (ja) * | 1983-03-31 | 1984-10-17 | Hitachi Ltd | 多項目自動分析装置の分注機構 |
| US4991451A (en) * | 1989-06-22 | 1991-02-12 | Nova Biomedical Corporation | Probe wiping |
| US5472672A (en) | 1993-10-22 | 1995-12-05 | The Board Of Trustees Of The Leland Stanford Junior University | Apparatus and method for polymer synthesis using arrays |
| DE19635004C1 (de) * | 1996-08-30 | 1997-11-20 | Opaljena Ges Fuer Optische Ana | Spülwannensystem für einen Multipipettor |
| US6824738B1 (en) | 2000-04-14 | 2004-11-30 | Discovery Partners International, Inc. | System and method for treatment of samples on solid supports |
| US6696298B2 (en) | 2001-12-07 | 2004-02-24 | Biosearch Technologies, Inc. | Multi-channel reagent dispensing apparatus |
| DE10255595A1 (de) * | 2002-11-26 | 2004-06-03 | Cybio Ag | Mehrkanaldosiervorrichtung mit automatischer Kalibrierung |
| DE102012015083B3 (de) | 2012-07-30 | 2013-08-08 | Scienion Ag | Dispenserkopf mit mehreren verschiebbaren Dispensern |
| JP6076075B2 (ja) * | 2012-12-21 | 2017-02-08 | 日本光電工業株式会社 | 検体分析装置 |
| DE102016101163A1 (de) | 2016-01-22 | 2017-07-27 | Bluecatbio Gmbh | Zentrifuge |
| EP3564681B1 (de) | 2016-12-27 | 2021-09-01 | Hitachi High-Tech Corporation | Düsenreiniger und automatische analysevorrichtung damit |
| DE102017113583A1 (de) | 2017-06-20 | 2018-12-20 | Bluecatbio Gmbh | Zentrifuge |
| KR102079021B1 (ko) * | 2018-11-29 | 2020-02-19 | (주) 비앤비 | 방사성 특성평가를 위한 자동화된 방사성핵종 화학 분리방법 |
-
2021
- 2021-08-16 DE DE102021121265.0A patent/DE102021121265B4/de active Active
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- 2022-08-15 EP EP22765090.0A patent/EP4388322A2/de active Pending
- 2022-08-15 CA CA3229406A patent/CA3229406A1/en active Pending
- 2022-08-15 WO PCT/EP2022/072745 patent/WO2023020981A2/de not_active Ceased
- 2022-08-15 JP JP2024509133A patent/JP2024531316A/ja active Pending
- 2022-08-15 CN CN202280069566.2A patent/CN118251598A/zh active Pending
- 2022-08-15 US US18/683,887 patent/US20240359201A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA3229406A1 (en) | 2023-02-23 |
| DE102021121265A1 (de) | 2023-02-16 |
| US20240359201A1 (en) | 2024-10-31 |
| CN118251598A (zh) | 2024-06-25 |
| WO2023020981A2 (de) | 2023-02-23 |
| JP2024531316A (ja) | 2024-08-29 |
| DE102021121265B4 (de) | 2024-03-07 |
| WO2023020981A3 (de) | 2023-04-20 |
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