EP3624945A1 - Pipettierhilfssystem - Google Patents
PipettierhilfssystemInfo
- Publication number
- EP3624945A1 EP3624945A1 EP18724536.0A EP18724536A EP3624945A1 EP 3624945 A1 EP3624945 A1 EP 3624945A1 EP 18724536 A EP18724536 A EP 18724536A EP 3624945 A1 EP3624945 A1 EP 3624945A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sample
- pipetting
- measuring
- arrangement
- sample receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
- B01L3/0217—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
- B01L3/0237—Details of electronic control, e.g. relating to user interface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/54—Supports specially adapted for pipettes and burettes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/56—Means for indicating position of a recipient or sample in an array
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0621—Control of the sequence of chambers filled or emptied
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/08—Ergonomic or safety aspects of handling devices
- B01L2200/087—Ergonomic aspects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/14—Process control and prevention of errors
-
- 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
- B01L2300/02—Identification, exchange or storage of information
- B01L2300/025—Displaying results or values with integrated means
-
- 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
- B01L2300/02—Identification, exchange or storage of information
- B01L2300/025—Displaying results or values with integrated means
- B01L2300/027—Digital display, e.g. LCD, LED
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/06—Auxiliary integrated devices, integrated components
- B01L2300/0627—Sensor or part of a sensor is integrated
-
- 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
- B01L2300/06—Auxiliary integrated devices, integrated components
- B01L2300/0627—Sensor or part of a sensor is integrated
- B01L2300/0663—Whole sensors
-
- 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
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
- B01L2300/0829—Multi-well plates; Microtitration plates
Definitions
- the invention relates to a pipetting auxiliary system for assisting the manual pipetting of a plurality of samples of a sample receiving device, in particular a microtiter plate.
- the invention further relates to components of a pipetting aid system and method.
- the pipetting of samples in a microtiter plate refers to the aspiration of the sample from a sample receptacle, in particular a sample container, into a sample transfer container, in particular a pipette tip, by means of a pipetting device and also designates the discharge of a sample from such a sample transfer container into the sample receptacle.
- Sample receiving assemblies such as represented by microtiter plates, include a plurality of sample receptacles for storing the samples or performing reactions in the samples or operations on the samples. Usually before performing the desired application, in part also during such an application, the sample receptacles of such sample receiving assemblies must be successively filled by pipetting or successively processed by pipetting. When using laboratory machines, such filling can take place without user intervention and error-free.
- the present invention relates to the correct addressing of the sample recordings in successive manual processing by means of pipetting.
- a typical procedure involves the following steps: (i) picking up the sample (s) to be pipetted into the sample transfer container (s),
- the selective uptake i. H. the recording of samples from specific wells of a microtiter plate, or the selective delivery and the selective transfer between microtiter plates.
- the samples can z. B. in another microtiter plate -in the same or in another grid or scheme, or be transferred to other vessels, for. B. in reaction / analysis vessels.
- the selective processing requires an even higher concentration of the user and carries an even higher risk for pipetting errors.
- US Pat. No. 7,544,330 B2 discloses a pipetting aid system for assisting manual pipetting on a microtiter plate, which partially avoids the errors mentioned.
- the sample tracking system for microtiter plates described there provides for the user to output the information about the occupation state of a sample holder after pipetting by illuminating the sample holder, in order to avoid an addressing error in the selection of the sample holders to be processed. Detected is the occupancy state after pipetting automatically by successively attached to a robot arm infrared laser of a measuring arrangement above the sample recordings automatically is moved and the transmitted vertically through the sample receiving laser light is detected by the detector.
- a sample recording with a sample generates a different detection signal than a sample recording without a sample, so that at least one such assignment state of the sample recording can be distinguished.
- the movement system of the measuring arrangement to be used requires a high outlay on equipment and a complex movement mechanism. Movement mechanics are fundamentally susceptible to error, which can lead to positioning problems and thus to measuring errors as well as to an increased maintenance effort.
- the robot arm of the movement mechanism is arranged in the space above the microtiter plate, in which the user must handle the pipetting device. Therefore, there is a risk that the movement mechanism is contacted and misadjusted when handling. On the other hand, the handling in this room is difficult because it is occupied by the movement mechanics.
- the present invention has the object of providing a pipetting aid system for assisting the manual pipetting of a plurality of samples of a sample receiving arrangement, which can be used efficiently and comfortably.
- the invention achieves this object by the pipetting aid system according to claim 1, the base device according to claim 16 in connection with the sample receiving device according to claim 17, the base device in claim 18, and the methods according to claims 19 and 20.
- Preferred embodiments are in particular subject matters of the subclaims.
- the pipetting aid system serves to assist the manual pipetting or dispensing of a plurality of samples in a processing position of a sample receiving device by a user-guided pipetting or dispensing device
- the pipetting auxiliary system comprising: a base apparatus having positioning means arranged to position the sample receiving assembly in the processing position within a positioning space of the base apparatus opened at least along a pipetting plane; the sample receiving assembly having a plurality of sample receptacles; a measuring arrangement having a plurality of measuring elements which are arranged at least in the processing position below this level and with which the occupancy state of at least one sample receptacle in the processing position can be detected, an output device for outputting information about the occupancy state of at least one sample receptacle to the user, and an electronic control device which is adapted thereto to determine the occupancy state of at least one sample holder in the processing position by controlling the measuring arrangement, and by controlling the output device to the user in dependence t output the information about its occupancy state from the occupancy state of the at least one sample
- auxiliary functions assisting the user are realized by a measuring arrangement which are arranged in the processing position below the level of the positioning space, the risk is greatly reduced that the measuring arrangement is damaged during handling.
- the space above this level is also freely accessible for visual inspection by the user from any angle and manipulation of the sample recordings by pipetting.
- the design according to the invention also extends the application flexibility of a pipetting auxiliary system, since the detection of the occupancy state of the one or more sample receptacles is already made possible during pipetting. Since the measurement is not hampered by the handling of the user in the area above the positioning space, already immersing a sample transfer container, in particular a pipette tip, in the Recording space of the sample recording with appropriate design of the measuring arrangement as occupancy state to be tracked in real time.
- the user can be informed via the output device with the information about the occupancy state of one or more specific sample recordings, so that the user may be warned against possibly incorrect pipetting again by appropriate information output, in particular illumination of the sample recording ,
- the positioning device guarantees reliable relative positioning of the sample receiving arrangement and of the base device, so that the other system components, in particular the measuring elements and / or the dispensing device, can each assume a single relative position with respect to the sample receiving arrangement and the base device. This improves the precision in handling the pipetting aid system.
- the plurality of measuring elements is an integral part of the sample receiving device and the dispensing device is an integral part of the basic device.
- the measuring elements are preferably electrodes that can be realized in particular via electrical lines of the sample receiving arrangement. These electrical lines are realized in particular by electrically conductive polymer, so that the sample receiving arrangement can be produced via injection molding, in particular 2K injection molding.
- the pipetting aid system according to the first preferred embodiment preferably has, as output device, a luminous arrangement as a constituent of the base device according to the first preferred embodiment, in whose positioning space the sample receiving arrangement according to the first preferred embodiment can be positioned, which has the multiplicity of measuring elements.
- the sample receiving arrangement according to the first preferred embodiment and the base device according to the first preferred embodiment preferably each have a coupling device in order to couple the plurality of measuring elements to a line arrangement, which is in particular part of the base device.
- the Conduit for the conduction of optical and / or electrical signals to be formed is regarded as an independent subject matter of the invention.
- the sample receiving device according to the first preferred embodiment which is applicable to the base device according to the first preferred embodiment, is considered as a self-contained subject matter.
- the plurality of measuring elements and the output device are integral parts of the base device.
- the pipetting assistance system according to the second preferred embodiment comprises the base apparatus according to the second preferred embodiment, in the positioning space of which the sample receiving arrangement according to the second preferred embodiment is positionable.
- the sample receiving arrangement according to the second preferred embodiment is set up such that the plurality of measuring elements in the processing position can be arranged on the plurality of sample receptacles such that the occupation state of the at least one sample receptacle can be measured. This can in particular take place in that the plurality of measuring elements in the processing position engage in at least one cavity of the sample receiving arrangement.
- a measuring element can engage in a cavity located between two sample receptacles.
- the base apparatus according to the second preferred embodiment usable for the sample receiving apparatus according to the second preferred embodiment is regarded as a self-contained subject matter.
- the sample receiving device according to the second preferred embodiment which is applicable to the base device according to the second preferred embodiment, is considered as a self-contained subject matter.
- the plurality of sensing elements and a plurality of dispensing means of the dispenser are integral with the sample receiving assembly.
- the output elements may be light-emitting elements, and in particular may be realized by light-diffusing optical means to which the light is passed through optical fibers of the sample receiving assembly, or may be realized by electroluminescent polymers which are excited via electrical leads of the sample receiving assembly.
- the pipetting assisting system according to the third preferred embodiment has the sample receiving device having the plurality of sensing elements and the plurality of output elements of the lighting device.
- the sample receiving assembly according to the third preferred embodiment and the base apparatus according to the third preferred embodiment preferably each comprise coupling means for coupling the plurality of sensing elements to a conduit assembly forming part of the base apparatus and coupling the plurality of dispensing members to another conduit assembly which is part of the basic device.
- each of these line arrangements can be designed to conduct optical and / or electrical signals.
- the base apparatus according to the third preferred embodiment usable for the sample receiving apparatus according to the third preferred embodiment is regarded as an independent subject matter.
- the sample receiving device according to the third preferred embodiment which is applicable to the base device according to the third preferred embodiment, is regarded as an independent subject matter of the invention.
- the sample receiving assembly comprises electrical leads.
- These electrical lines are realized in particular by one or more electrically conductive polymers, so that the sample receiving arrangement is preferably completely made of polymer, in particular via injection molding, in particular 2K injection molding, or by a thermoforming process.
- An electrically conductive polymer can be formed in particular by enriching a carrier polymer, in particular PP, PE, PS, PC, with electrically conductive filling material such as graphite, carbon, carbon nanotubes, and fragments of these substances, in particular if the filler 40 to 80 percent by mass of makes electrically conductive polymer.
- An electrically conductive polymer can be chosen in particular as intrinsically conductive polymer: suitable are, in particular, poly-3,4-ethylenedioxythiophene (PEDOT, also PEDT), in particular with polystyrene sulfonate (PSS) as counterion (PEDOT: PSS); Polyaniline (PAni); Polyparaphenylene (PPP); particularly preferred: polypyrrole (PPy); Doped polythiophene (PT).
- PEDOT poly-3,4-ethylenedioxythiophene
- PSS polystyrene sulfonate
- PAni Polyaniline
- PPP Polyparaphenylene
- PPP polypyrrole
- PT Doped polythiophene
- the measuring arrangement preferably has sensor devices, in particular a multiplicity of sensor devices.
- a sensor device preferably has one or two measuring elements. It can also have more measuring elements.
- the sensor devices are preferably arranged in a pattern. This pattern preferably corresponds to the pattern in which the sample receptacles of the sample receiving arrangement are arranged.
- each sample holder is assigned a sensor device. This can be done such that at least one measuring element of each sensor device is positioned adjacent to at least one sample holder, in particular is positioned adjacent to exactly one sample holder.
- the at least one measuring element is preferably arranged laterally of the sample holder in the processing position.
- the at least one measuring element of the sensor device is preferably arranged in the processing position below, preferably partially or completely below, the sample holder.
- At least one measuring element in particular more than one measuring element and in particular exactly two measuring elements, can be arranged in the processing position, preferably laterally of a sample receptacle or several sample receptacles, in particular in a lower region of the sample receptacle.
- the lower portion of a sample receptacle may be defined as a fraction of the total height of the sample receptacle.
- the total height of the sample holder is definable in particular as the vertical distance between the lowest position and the highest position of the inner wall of the Samples recording.
- the arrangement of the one measuring element or the plurality of measuring elements in the lower region of the sample holder, the measuring elements can be made compact, and therefore particularly robust.
- the engagement volume required for the engagement of the measuring elements in the at least one cavity of the sample-receiving arrangement is small, so that a compact and simple design of the sample-receiving arrangement is made possible.
- the sensing elements are located in the machining position below the sample receptacles, no cavity of the sample receiving assembly is needed to position the sensing elements near the sample receptacles that allow successful measurement of occupancy or level measurement.
- the measuring elements may be in contact with an outer wall of the sample receptacles, in particular in the lower region of the sample receptacle and in particular with a bottom wall of the sample receptacle, or be spaced from this outer wall or bottom wall.
- a capacitive measurement can be successful in such an arrangement of the measuring elements, since the effect of the electric field between two measuring elements acting as capacitor electrodes extends into the space which is outside the gap between the two measuring elements.
- the direction “upward” means a direction perpendicular to the plane A which, in the proper use of the pipetting assisting system, is the direction opposite to gravity, that is, a directional designation in the conventional range in the intended use of the pipetting auxiliary system.
- “lateral” means a position parallel to the central vertical axis of the sample receptacle, in particular to a substantially vertical side wall of the sample receptacle in the radial direction. This also applies if the sample receiving wall has an oblique course, which is typical in the usually conical shape, the may facilitate the introduction of sample containers or pipette tips into the sample holder.
- the measuring arrangement in particular a sensor device, is preferably set up to measure a capacitance or a change in the capacitance.
- the measuring arrangement in particular a sensor device, preferably has at least one pair of electrodes, which are in particular electrically insulated from one another and in particular so as to at least partially enclose the receiving space of at least one sample receptacle as a dielectric of the condenser space. It is also possible and preferred that the receiving space of at least one sample holder is not located between the electrodes of the sensor device, but outside the gap between the electrodes. The receiving space of at least one sample receptacle then engages in particular in the space region defined as a condenser space, which is detected by the electric field of the electrodes.
- the change in permittivity caused by changing the content of the condenser space is then measurable electrically. In this way it can be determined, in particular, whether there is a sample in the receiving space of the sample holder or not. Preferably, it can be distinguished by whether the receiving space is more likely to be filled to 1/4, 1/2, 3/4 or 4/4 (completely), is overfilled, or is not filled. A precise determination of the filling volume is not possible in this way and is not sought in this embodiment. Nevertheless, a level measurement can be realized, the measurement resolution can be determined with simple experiments. The preferred measurement resolutions of the sensor device will be described below.
- the shape of an electrode for capacitive measurement may be rod-shaped, and / or is preferably in the form of a plate (plate element) whose shape is adapted in particular to the shape of the sample holder or the receiving space of the sample holder.
- An electrode may be formed in particular planar. The main plane of such a planar electrode can be arranged horizontally, ie in particular parallel to the opening of a sample receptacle, or vertically, that is to say in particular perpendicular to the opening of a sample receptacle.
- the bottom of a sample receptacle can be considered the area of the inside of a Sample can be viewed, the projection of which on the horizontal surface or on the plane A has a size different from zero.
- the bottom surface is defined by the curved, non-vertical portion of the inside of the sample holder.
- the bottom can also be defined as an inner side region of the receptacle, which is located in a lower region of the sample receptacle - this definition is meaningful, in particular, in the case of mostly tapered or conical sample receptacles.
- an electrode may have a circular segment shape and, in particular, may be substantially semicircular.
- Two planar electrodes of a sensor device can each be formed as a circle segment or as a semicircle, wherein the straight edges of the surfaces can be spaced apart and arranged opposite one another, and in particular can run parallel to one another.
- the two electrodes can be arranged substantially completely or mostly vertically below the bottom or the opening of the sample holder.
- the electrode preferably has the shape of a corresponding cylinder jacket section, which is arranged adjacent to the receiving space or the sample receptacle.
- the shape of the electrode may also deviate partially or substantially along the entire height of the sample receptacle from the shape of the sample receptacle, in particular its outer shape.
- the measuring assembly which may be part of the basic device in particular, may be adapted to incorporate Cavity to engage, which is provided below the sample holders of the microtiter plate.
- microtiter plates may have flat, round or conical bottom shapes of the sample holders. In any case, remains below the sample shots At least 1 mm high cavity available in which the measuring device is partially or completely arranged in the processing position. This can be taken from the standard ANSI SLAS 2-2004 (R2012).
- the measuring arrangement is therefore preferably designed so that the measuring arrangement or its measuring elements are arranged partially or completely in the positioning space, in particular in the area in which the cavity of the sample receiving arrangement is arranged in the processing position.
- the measuring arrangement or its measuring elements are preferably not arranged above this area.
- the measuring arrangement or its measuring elements are partially, largely or completely arranged in a region which is located in the positioning between 0.0 mm and 1, 0 mm above the base device, in particular located above the support points of the base device.
- the support points form the area of the base device that the sample receiving assembly contacts in the processing position and on which the sample receiving assembly rests in the processing position.
- the electrode preferably has the form of a corresponding planar, in particular rectangular, plate section, which is arranged adjacent to the receiving space or the sample receptacle.
- the electrode In the case of a sample receptacle which is at least partially spherical in shape, for example in the base region, and / or in the case of an at least partially spherical receiving space, the electrode preferably has the form of a corresponding at least partially spherical plate section which is arranged adjacent to the receiving space or the sample receptacle , In the case of an at least partial - for example, in Bottom conical-shaped sample receiving and / or in the case of an at least partially conically shaped receiving space, the electrode preferably has the shape of a corresponding at least partially conical shaped plate portion which is disposed adjacent to the receiving space or the sample receiving.
- These design options address the proven, commercially available designs of microtiter wells. These are especially available as microtiter plates with F-bottom (flat), U-bottom (round) and V-bottom (conical).
- a plate element can each also have a film nature.
- An electrode preferably extends in substantially the entire length of the receiving space in the vertical direction in order to perform both a measurement at very low occupancy volumes and when fully filled can efficiently. From the receiving space, the electrode in the processing position is preferably separated by an insulation, in particular an insulating layer, in order to prevent electrochemical reactions at the electrode when a liquid sample is arranged in the processing position in the sample holder.
- the electrode is preferably foil-like.
- the electrode is preferably an electrically conductive polymer, and is produced in particular by means of injection molding or by a thermoforming process.
- the electrode may also be made of metal or have metal, in particular aluminum, copper or silver.
- An electrode preferably extends in a lower region of the entire length of the receiving space in the vertical direction, whereby a measurement can also be carried out efficiently at very low occupancy volumes as well as when completely filled, since the effect of the electrical energy generated between them during the capacitive measurement by means of the electrodes Field also extends into the area above the electrodes.
- the course of the electrode may in particular be meandering.
- a second electrode which is connected in particular to ground, and which is arranged at a distance from the first electrode and in particular can run parallel to this first electrode.
- Pairwise electrodes may each have finger elements that are arranged intercalating or comb-like to the finger elements of the opposite electrode. These electrodes can be arranged in a meandering intercalating manner.
- a first electrode may be formed as a core electrode, in particular a circular electrode, and the second electrode may be arranged as a hole electrode substantially in the plane of this core electrode outside the core surface of the core electrode, so that the core electrode is arranged in the hole of the hole electrode.
- the second electrode can also be arranged parallel to the core electrode, in particular below the core electrode, and can be designed in particular as a cup electrode, in that at least one side wall of the cup electrode rises from a bottom section of the cup electrode to the height of the core electrode, the electrodes always being spaced apart are.
- the electrode or several or all electrodes of the measuring arrangement can be connected to an electronic control device by at least one line, in particular at least one or more strip conductors, which are arranged in particular on the sample receiving arrangement.
- Conductor tracks may consist of electrically conductive plastic or have such. These conductive structures could also be realized by injection molding, in particular 2-component injection molding. Alternatively, both the electrodes and the conductor tracks could be realized by electrically conductive foil elements.
- the sample receiving device in particular a microtiter plate, can be contacted externally via suitable landing surfaces, for example by means of spring contact pins / contact needles of the base device.
- each sensor device can be assigned at least one or two, in particular exactly one or two, line / s, by which the at least one measuring element can be connected to an electronic circuit, which can be part of the electronic control device.
- Such an arrangement with individual contacting of each measuring element offers a particularly high measuring accuracy.
- 96 sample recordings therefore, in particular a total of 96 or 192 lines can be provided.
- it can also be assigned to more than one measuring element of a single line or be connected to it, which in particular fewer lines are required as measuring elements or as pairs of measuring elements.
- the sample receiving assembly has no electronic circuit.
- contact points are preferably provided for producing an electronic contact.
- the contact points of the sample receiving arrangement can each have at least one contact point with a corresponding contact of a be connected electronic control device.
- the contact point is replaced analogously by an optical coupling point which allows the transmission of a light signal through the coupling point.
- At least one measuring element is arranged in the upper half of a sample holder, in particular on an upper edge of a sample holder.
- a sensing element configured as a single electrode is preferably placed in the upper half of a sample receptacle to measure the capacitance change of that electrode with respect to a ground electrode, the latter being made available through the base device.
- the individual electrode can in particular be designed as a ring electrode, which can be arranged in the processing position at the upper edge of a sample holder.
- the ring electrode may in particular be firmly connected to the sample receiving arrangement.
- one sensor can be assigned to two sensor devices. One of them may in particular comprise the single electrode described, in particular in the upper region.
- the other sensor device comprising one or two electrodes, can be arranged in particular in the lower region of the sample holder.
- the upper portion of a sample receptacle may be considered to be a fraction of the total height of the sample receptacle that extends downwardly from the upper edge of the sample receptacle.
- the measuring elements in particular the measuring electrodes, may also be printed by a printing method on the sample receiving device or the base device.
- the output elements of the output device that is to say in particular the luminous elements of a luminous arrangement, can be printed onto the sample receiving device or the base device by a printing process.
- electrical traces with which in particular the measuring elements or the output elements are connected to the electronic control device or be printed by a printing process on the sample receiving device or the base device.
- Measuring electrodes and printed conductors can in particular be printed by printing liquids with conductive organic or analogous materials. In particular, they can be printed by printing liquids with metal-containing liquids. Such a metal-containing liquid may in particular contain silver or gold, in particular silver particles or gold particles. In particular, conductive polymers can also be printed.
- the printing process can be inkjet, screen and offset flexo and gravure printing.
- the sample receiving arrangement preferably has a planar surface on which the corresponding components, that is to say in particular the measuring elements and / or printed conductors and / or output elements, are printed. In particular, the planar surface may be a planar top or a planar bottom of the sample receiving assembly.
- the imprinting of the components offers the advantage of low cost and high throughput in the manufacture of sample receiving assemblies. This is particularly advantageous in the case of sample receiving arrangements provided as disposable articles.
- Measuring elements and / or conductor tracks and / or output elements may also be partially or completely prefabricated and may be connected to the sample receiving device or the base device.
- a carrier element such as a carrier film is connected together with the components to be mounted.
- the connection is preferably cohesively, in particular, the connection is preferably by gluing.
- the invention is based on the experimentally determined technical teaching that a sample transfer container filled with an electrically conductive sample and itself non-electrically conductive is suitable for realizing such a measurable change in capacitance of a single electrode.
- a pipette tip made of conductive plastic can be detected both filled and unfilled.
- a non-electrically conductive pipette tip can be detected if, for example, it is filled with water. In this way, a sample receiving arrangement or a pipetting aid system can be provided at a relatively low cost.
- a measurement of the occupancy state can not be done only via an electrical capacitance measurement.
- the measuring arrangement is further preferably configured to use an optical signal transmission, in particular to measure a quality of light or its change, in particular a light intensity or light color after passage of the light through the receiving space of a sample receptacle or the measuring space to the occupation state of the receiving space or measuring space to investigate.
- a first measuring element serving as a light emitter is arranged on a sample receptacle, and a second measuring element serving as a light receiver is provided.
- the measuring element can be designed in particular as a light-deflecting element, in particular as a prism element or reflective element.
- a Lichtqán, in particular LED may be part of the base device.
- the sensor device is a capacitive sensor device that detects a change in a capacitance value caused by a pipetting process.
- the sensor device is an optical sensor device which detects a change in an optical property. The measurement is performed in such a way that a change in the occupancy state of a measurement space is detected, wherein this measurement space contains at least part of the sample intake or the entire sample intake.
- the occupancy state changes when an object enters the Measuring room is introduced.
- the object may in particular be a liquid sample or a pipette tip, in particular a pipette tip filled with aqueous solution or with electrolyte, as is typical in pipetting operations.
- a sensor device is preferably designed to generate at least one measurement signal which is characteristic of a predetermined occupation state.
- the occupancy state is characterized by the unique and distinguishable occupancy of at least one measurement room.
- two distinguishable occupancy states are understood to mean that there are two different arrangements each consisting of a measurement space and an object in different states that can be distinguished with the sensor device.
- the number M becomes in the present case also referred to as measurement resolution of the sensor device.
- a measurement resolution M is considered to be a preferred problem solution if two occupancy states of a sample intake are distinguishable by the measurement at which the two fillings of the sample intake differ by preferably 50% or preferably 25% of the total sample intake volume, in particular at least two of the fill states Sample intake to 0%, 25%, 50%, 75% or 100% is filled with a liquid sample.
- the measurement resolution is such that all occupancy states 0%, 25%, 50%, 75% or 100% can be distinguished from each other.
- a measurement resolution is considered a preferred problem solution even if the occupancy states 0% and 50%, and optionally also 100%, can be distinguished from each other.
- a measurement resolution is considered as a preferred problem solution even if the introduction and / or removal of the filled with aqueous solution pipette tip can be detected in the sample holder, or in the upper edge region of the sample holder.
- Such low measurement resolutions M are not suitable for determining an accurate level of a sample receptacle, but are suitable for the purposes of the present invention.
- the measuring arrangement is not set up to determine a fill level of the at least one sample receptacle.
- the sensor device can be set up to carry out an impedance measurement, in particular by applying an alternating voltage to an electrode serving as a transmitting element, while another electrode serves as a receiving element, for carrying out a suitable measuring method for the purpose of determining the filling level.
- the measuring arrangement has a microcontroller for controlling in particular at least one, in particular at least two, or in particular for the individual or in particular pairwise control of the plurality of measuring elements designed as electrodes.
- this microcontroller has a touch sensing controller (TSC), as it is used in particular for the measurement of touch-sensitive surfaces in touch sensors.
- TSC touch sensing controller
- Such microcontrollers with TSC are in particular commercially available from STMicroelectronics, Geneva, Switzerland, in particular the model STM32L073xx is suitable.
- Such a microcontroller has in particular a special hardware called Touch Sensing Controller (TSC) to query capacitive "touch keys", ie touch-sensitive surfaces as an input tool.
- TSC Touch Sensing Controller
- the standard application of this Touch Sensing Controller is to measure the capacitance of a contact surface in relation to ground potential.
- the application of the TSC-MCU can provide the following procedure, which can be carried out accordingly by means of the electronic control device in combination with the TSC-MCU: this capacitance, in this case the capacitance of the electrode (s), is repeatedly charged and discharged into a reference capacitor. This process is repeated until the voltage of the reference capacitor reaches a threshold value. The number of charge / discharge cycles required is counted and stored in dedicated MCU registers.
- the capacitance between the two electrodes on the walls of a sample receptacle can be measured.
- one of the two electrodes is connected to the circuit ground (GND) and the other to an input of the TSC of the MCU. In this way, the capacitance of the device relative to the circuit ground can be measured.
- a pipette tip or a dispenser tip can also be detected in the measuring space or in the immediate vicinity of a sample receptacle.
- an electrode can be mounted in the upper region of a sample receptacle, in particular at the upper edge, and connected to a measuring input of the Touch Sensing Controller. If an electrically conductive pipette tip or dispenser tip is now connected to the circuit ground, the capacitance of the electrode in the upper region of a sample receptacle to the circuit ground increases as the pipette tip / dispenser tip approaches. Based on the information from the measurement or the detection of the pipette tip / Dispenserspitze now information can be output to the user.
- the electronic control device of the pipetting auxiliary system which is arranged in particular in the base device, and a further electronic control device of the pipetting device or the dispensing device are adapted to communicate with each other via a signal connection, in particular a data connection, ie in particular analog or digital, in particular wired or wireless, eg via a Bluetooth connection or a wireless network (WLAN).
- a WLAN can generally be set up according to the standard of the IEEE 802.1 1 family.
- communication devices are respectively provided on the electronic control device, for example a network adapter.
- the data connection is used to exchange data, unidirectional and / or bidirectional.
- the said control devices in particular the control programs executed by their data processing devices, can be set up to exchange data via the communication devices. For example, the transmission of control data with the content of the message "liquid dispensed" to the electronic control device of the pipetting auxiliary system there could trigger an occupancy state measurement and feedback to the user on the successful delivery in the correct sample recording by means of the output device, in particular a light assembly done.
- one of the electrodes is designed as a transmitting element and the other electrode as a receiver element.
- no accurate impedance measurement is desired.
- no permanently temporally sinusoidally variable voltage is applied to the electrode for the measurement, and in particular no AC voltage is applied.
- Such measurements are complex and not required in the present case to obtain by means of capacitive measurement the desired, relatively low measurement resolution.
- an optical sensor device as measuring elements on at least one optical transmitter element and at least one optical receiver element, which are preferably arranged parallel to a sensor surface of the sensor section, which is in particular parallel to the plane A.
- Light guide elements can be provided to guide the light between the optical transmitter element and the receiver element through the measuring space, in particular light guide elements selected from the group: lens element, prism element, mirror element, optical fiber.
- the at least one transmitter element and the at least one receiver element are arranged opposite one another on opposite sides of the measuring space or a portion of the measuring space. In this way, it is possible in particular to realize a sensor device which operates on the principle of a light barrier.
- the transmitter element of an optical sensor device is preferably an LED, in particular an OLED, preferably a laser diode, in particular a vertically emitting laser (VCSEL), since such light sources with a compact structure which can be integrated on an IC substrate simultaneously have a high luminosity, in particular a low luminosity Energy consumption and in particular a relatively low ratio of luminance / energy consumption.
- the transmitter element of an optical sensor device is furthermore preferably an LED, in particular OLED, in particular an infrared LED.
- a visible light source particularly at wavelengths between 380 nm and 780 nm, offers the advantage that the sensor function is more easily verifiable by the user, and further that visible light is well suited for reflection arrangements to reflect and re-emit the transmitted light to recieve.
- the use of infrared light in particular with wavelengths between 780 nm and 1000 nm, or 780 nm and 1500 nm, offers the advantage that the sensor surface of a non-visible to visible light.
- transparent material layer in particular a protective layer or contaminants, may be covered, which increases the choice of available material layers compared to the use of visible emitting LEDs and makes reading more reliable.
- the output device is preferably part of the base device.
- the dispenser is preferably located below the plane A, and is preferably located below the sample receiving assembly in the processing position.
- the output device may have a plurality of output elements. One, preferably each, output element is preferably assigned to one or exactly one sample receptacle of the sample receiving arrangement in the processing position, in particular arranged below a sample receptacle.
- An output element may comprise a mechanical display element, for example a rotatable element having different appearing, especially colored, display surfaces which can be presented to the user by rotation and which represent the occupying state.
- the display element may be driven from below by the base device, and in the processing position, in particular, in each case through an opening in the sample receiving assembly into the field of view of the user.
- a display element may be disposed in the processing position below the sample receiving assembly.
- the dispenser is also preferably part of the sample receiving assembly.
- the dispenser may also be part of another laboratory device that forms part of the pipetting aid system. This laboratory device can do the Pipetting or dispensing device with which the user manually pipettes the samples on the sample receiving assembly.
- the output device is preferably configured to output optical signals, in particular via a lighting arrangement or a display. However, it can also, in particular in addition, be set up to emit acoustic signals.
- the output device can in particular have a voice output device.
- the electronic control device can be set up to output at least one information depending on the measured occupancy state of the at least one sample holder, in particular the information about the position of the measured sample holder and / or the information about the occupancy status measured there. Information can be displayed on the display by means of a graphic symbol, in particular a written description, and / or can be coded by voice output and output via the voice output device.
- a position of the measured sample receptacle can be output as a coordinate: in the case of microtiter plates, a coordinate system of letters and numbers is typically used.
- the output device is designed as a light-emitting arrangement
- the output element corresponds to a light-emitting element
- the lighting arrangement has a plurality or multiplicity of lighting elements.
- a light-emitting element is preferably a light source, but may also be a light-emitting element.
- a light-emitting element can be formed by the output of a light-conducting fiber, which is in particular coupled to at least one light source.
- a light source is preferably formed by at least one light emitting diode (LED), in particular a semiconductor LED or an organic LED (OLED), or has such.
- the light source can be formed in particular by means of a photoluminiscent polymer.
- the light source may in particular be a laser diode, preferably a surface emitter laser (VCSEL: English "vertical-cavity surface-emitting laser").
- a lighting element is preferably set up to illuminate exactly one or at least one sample receptacle in the processing position. This is done so that the user, who viewed the sample receiving device usually from above the plane A, the illumination of an individual sample holder can clearly recognize and also clearly distinguish from the illumination of another, in particular adjacent sample holder.
- the light emitted by the luminous element is coupled into the preferably at least partially transparent designed sample receptacle or sample receiving arrangement and leaves it again at the top, directed or by scattering at the sample receptacle or sample receiving arrangement, in particular its surface.
- the sample receptacle or sample receiving arrangement can also have at least one opening or recess in order to allow the light emitted by the luminous element preferably to emerge from below through this opening or recess in the direction of the observer. If the light-emitting elements are arranged in the processing position at the top of the sample receiving arrangement, a transmission of the light through the sample receiving arrangement is not necessary, but is not excluded with appropriate light guidance.
- the light emitted by a luminous element can be restricted to a solid angle or focused onto a region of the sample-receiving arrangement or sample receptacle.
- the luminous arrangement preferably has a plurality of light-emitting diodes, in particular a light-emitting diode matrix, with which the individual sample images can be illuminated. This serves to guide the user and to provide an optical feedback for the purpose of informing about the metering of liquid into the respective sample receptacle.
- the lighting arrangement preferably has lighting elements, in particular a plurality of lighting elements.
- the lighting elements are preferably in a pattern or a matrix arranged. This pattern preferably corresponds to the pattern in which the sample receptacles of the sample receiving arrangement are arranged.
- each sample holder is assigned a light-emitting element. This can be done so that at least one luminous element is positioned adjacent to at least one sample receptacle, in particular positioned adjacent to exactly one sample receptacle, in particular below the plane of the bottom walls of the sample receptacles is arranged and in particular is arranged vertically below the sample receptacle.
- the at least one luminous element can, however, also be arranged laterally of the sample receptacle in the processing position. If the sample receiving arrangement has the luminous arrangement, the luminous elements can each also be arranged at the upper edge of the sample receptacles.
- a lighting element is preferably adapted to be operated in a predetermined illumination mode.
- the electronic control device is preferably configured to control the at least one lighting element in a predetermined type of lighting.
- the type of illumination can be defined by the light emitted by the luminous element or by the light passing from the illuminated sample receptacle to the observer: light color or wavelength, intensity, temporal change of these parameters, in particular the intensity, i. Pulse rate or continuous light.
- the type of illumination of the illumination of a sample receptacle depends in particular on the individually measured occupancy state of the sample receptacle. In particular, the intensity of the illumination can be zero, so that formally a deactivated illumination can also be regarded as a type of illumination.
- the electronic control device also referred to as a control device, in particular its electronic circuit or microcontroller, is preferably a component of the base device, which is preferably a separate device from the sample receiving device.
- a data processing device is preferably part of the electronic control device that controls functions of the pipetting auxiliary system.
- the functions of Control devices are implemented in particular by electronic circuits.
- the controller may include a microprocessor that may include the data processing device.
- the control device and / or the data processing device is preferably designed for carrying out a control method, which is also referred to as control software or control program.
- the functions of the pipetting aid system and / or the control device can be described in method steps. They can be implemented as components of the control program, in particular as subroutines of the control program.
- a control device generally has, in particular, the data processing device, in particular a processing unit (CPU) for processing data and / or a microprocessor, or is the data processing device.
- the data processing device of the control device of the pipetting auxiliary system is preferably also set up for controlling a treatment process and / or individual treatments which are carried out by one or more in particular optional treatment devices of a laboratory device.
- the data processing device is preferably a device which is arranged outside the pipetting auxiliary system and separate from it, also referred to as external device or external data processing device.
- the data processing device and the pipetting aid system are then preferably in a signal connection or a data connection and are preferably components of a network for data exchange.
- the data processing device and the pipetting auxiliary system are in particular components of a system according to the invention for monitoring a manually performed pipetting process.
- the pipetting aid system can be equipped without an electrical control device and, in particular, serves essentially as an adapter device with which the control of the measuring arrangement and the luminous arrangement is mediated between the external electronic control device or the external data processing device and the sample receiving device becomes.
- the control device has a data storage device, in particular a measurement data memory, for storing the at least one measurement value defining the occupancy state.
- the data storage device is preferably housed in a physically rewritable memory device, such as RAM, FLASH memory, EEPROM, but may also be arranged in other memory devices.
- the pipetting auxiliary system or its electronic control device is in particular configured to exchange data with an electronic laboratory book (ELN), a laboratory information and management system (LIMS) or a laboratory device management system. Occupancy state data and / or data of a pipetting program and / or control data can be exchanged with one of the systems in order to archive this data, in particular for documentation purposes, or to realize control of at least one laboratory device, in particular one Control of the pipetting aid system.
- ESN electronic laboratory book
- LIMS laboratory information and management system
- laboratory device management system Occupancy state data and / or data of a pipetting program and / or control data can be exchanged with one of the systems in order to archive this data, in particular for documentation purposes, or to realize control of at least one laboratory device, in particular one Control of the pipetting aid system.
- this has as a system component the pipetting device (or the dispensing device, not always mentioned separately below), by means of which the user performs the pipetting operations on the sample receiving device.
- the electronic control device of the Pipettierwhissystems and / or the base device and the pipetting device each have a communication device, so that a wired or preferably wireless data connection for data exchange is buildable.
- the electronic control device of the pipetting auxiliary system is a component of this pipetting device, by means of which the user performs the pipetting operations on the sample receiving device.
- the pipetting assistance system also includes the pipetting device.
- controls in the pipetting device in particular: the execution of a pipetting program which guides the user during manual pipetting, in particular in a predetermined sequence; - triggering a measurement with at least one measuring element of the measuring arrangement on at least one sample receptacle; - The output of the information on the occupancy state at this at least one sample holder.
- control device has at least one program data memory in which a program code can be stored.
- the program code is preferably designed to use the at least one measured value and to evaluate it.
- a pipetting auxiliary system or a control device that is designed or set up to form a specific function, is understood in the present case such a Pipettierwhissystem or such a control device, which is not only suitable for performing this function in principle, for example after installing a software, but already all means In order to actually fulfill this function, for example, it already possesses the necessary electronics, the required program code or the required software, in particular in the form of a firmware of the pipetting auxiliary system or its control device.
- the means for performing this function include in particular an evaluation device.
- the evaluation device for example, correspondingly configured electrical circuits may have, for example, an analog signal representing the measured value, evaluate and compare for example by means of a comparator circuit with a reference signal (reference value).
- these means can have a digital signal processing system.
- the control device preferably has an electrical evaluation device.
- the electronic control device is in particular configured to electrically actuate the measuring arrangement in the processing position and to evaluate the measurement signals obtained.
- the electronic control device is in particular configured to perform a measuring method on the measuring arrangement in order to determine the occupancy state of at least one sample receptacle.
- the electronic control device is in particular configured to perform a measuring method on the measuring arrangement in order to determine the occupancy state of a plurality of sample receptacles, for example a column of sample receptacles in the case of a matrix-like arrangement of sample receptacles.
- the measuring arrangement is electrically controlled, in the case of an optical measurement, the measuring arrangement is preferably controlled by light signals.
- the electronic control device is set up to carry out a calibration method on an unfilled sample receiving device and / or during a filling process of a sample receiving device, in particular of a certain type of sample receiving device. In this case, the measurement results are recorded, which result at vacancy or in a known occupancy state on the sample receiving device.
- Such measurement results of a calibration method are preferably stored as reference data in a data storage device, which may be part of the electronic control device and / or the base device.
- This reference data can be used in an evaluation method carried out by the electronic control device to determine the respective occupancy state by comparison of measured values with reference values of the reference data.
- the electronic control device is adapted to perform a diagnostic procedure on an unfilled sample receiving assembly or with a base device which is not equipped with a sample receiving assembly but which is optionally equipped with a test plate.
- the adjacent contact points, preferably provided on the base device, of a sensor device to be contacted can be assigned or assigned a specific reference capacitance. Defects or soiling of these contact points can be determined by this diagnostic method.
- the test plate may have reference blocks which each replace a sample receptacle provided with measuring element.
- the electronic control device be set up or adjustable by the user so that the calibration procedure on an empty sample receiving assembly is made mandatory for each sample receiving assembly after and / or once the sample receiving assembly is located in the positioning space.
- a short position test method can be provided, in which the arrival of the sample receiving arrangement in the positioning space is registered, in particular via at least one position sensor connected to the electronic control device.
- the position sensor may be, for example, an optical sensor or a mechanical pressure switch.
- the measuring arrangement can also be repeatedly interrogated at intervals. In the process, a determination is made as to whether or when a typical measurement value for the presence of a sample receiving arrangement in the positioning space is determined.
- the electronic control device can be set up such that the user is signaled the success or possibly the failure of the calibration, in particular by means of an optional signal device or the output device, in particular the light assembly - see the comments on the connection test method below.
- the user can make the success or, if appropriate, the failure of the calibration via the display of a laboratory device associated with the pipetting auxiliary system, in particular via the display of the pipetting device, with which the user also performs the pipetting operations on the sample receiving device.
- the individual calibration of the sample receiving arrangement offers the advantage that dimensions and tolerances are less critical. The effort involved in the manufacture of the sample receiving arrangement can be reduced if the tolerances for the dimensions of the structures relevant for the measurement may be greater. Such structural dimensions are in particular the positioning of the contact points or coupling points or the positioning of the measuring elements on the sample receiving device.
- the electronic control device is in particular configured to perform a position test procedure on an unfilled sample receiving device. It is used to determine whether the machining position has been correctly established.
- at least one position sensor connected to the electronic control device can be provided on the base device, with which the processing position can be verified.
- the processing position can be verified for carrying out the position test method by means of the measuring arrangement and the sample receiving arrangement accommodated in the positioning space.
- the electronic control device is set up to carry out a connection test procedure on an unfilled sample receiving arrangement, with which it is checked whether each of the sensor devices of the measuring arrangement is connected in an acceptable manner to the electronic control device, in particular electrically or optically. In this case, measurement results are not necessarily stored as data.
- the electronic control device can be set up to signal the user, in particular by means of an optional signaling device, if at least one of the sensor devices has not been connected correctly, and optionally to signal which of the sensor devices has not been correctly connected. Alternatively or additionally, it is also possible to signal if all sensor devices have been correctly connected, and / or it is possible to signal which of the sensor devices have been correctly connected. This can be done in particular by means of the output device, in particular a lighting arrangement.
- the output device, in particular the lighting arrangement can be set up to signal to the user the information about the result of a registration method, a diagnostic method, an individual calibration method, a position test method and / or a connection test method by means of the output device, in particular the light-emitting device, in particular differentiated signal.
- the result of each named method or other method can be signaled by means of a different output quality, in particular color or a temporal luminous frequency, in particular a continuous or flashing output / luminance of at least one or all output elements / luminous elements of the output device / luminous arrangement.
- a different output quality in particular color or a temporal luminous frequency, in particular a continuous or flashing output / luminance of at least one or all output elements / luminous elements of the output device / luminous arrangement.
- the electronic control device is preferably set up to illuminate the sample receiving arrangement in the processing position by the lighting arrangement, in particular not to activate the lighting arrangement, if no sample receiving arrangement is arranged in the positioning space.
- the electronic control device is preferably configured to control the output device, in particular the lighting arrangement, in dependence on a pipetting program.
- a pipetting program implements a control plan by means of which the user is guided by the corresponding output of information about target positions to be pipetted. This guidance takes place by outputting information in dependence on a pipetting plan stored, for example, in the control device, by means of the output device, which indicates to the user the target positions for the pipetting operations to be performed manually.
- the target positions correspond to certain sample receptacles of the sample receiving assembly.
- the user will be instructed to systematically fill the sample receiving assembly, eg, column by column, and gradually.
- the user is advised to randomize the sample receiving arrangement, that is, according to a random pattern or unknown to the user given but stored in the pipetting pattern, gradually fill.
- the electronic control device is preferably configured to control the output device, in particular the light-emitting device, as a function of the occupancy state of the at least one sample holder detected by means of the measuring arrangement.
- the electronic control device preferably has a logic device for outputting information on at least one sample receptacle, in particular for illuminating at least one sample receptacle.
- the logic device can by an analog and / or digital electronic
- measurement results of the measuring arrangement can be evaluated electronically and, in dependence on this electronic evaluation, the output of the information / illumination of the sample receiving arrangement can be controlled electronically by means of at least one output element / luminous element.
- the addressing of the relevant output element / luminous element and its activation or deactivation can be controlled electronically.
- the logic device can also be realized by a control program or a control software.
- the electronic control device is preferably set up for data processing.
- the electronic control device or the logic device is preferably designed to execute at least one of the functions listed below, with which in particular the output logic / lighting logic of the pipetting auxiliary system can be defined in order to provide the user with the corresponding signals and thus the auxiliary information provided by the pipetting aid:
- the type of output / the type of illumination for at least one sample recording depends on the measured occupation state of the sample holder.
- a change in the occupancy state can be signaled by a change in the output quality, in particular the type of illumination, for example by a color change.
- the user can be signaled the occupation of a receiving space of a sample holder by a liquid sample or the entry of at least one sample transfer container, in particular pipette tip, can be signaled into the measuring space in real time.
- the type of output / the type of illumination for at least one second sample receptacle depends on the measured occupancy state of at least one first sample receptacle.
- a change in the occupancy state of the at least one first sample receptacle is signaled by a change in the output type / type of illumination for the at least one second sample receptacle, for example by the activation of a lighting or a color change.
- the at least one second sample holder is highlighted by optical marking. This can be used to indicate to the user the next target, namely at least one or more sample recordings (subsequent pipetting) to be processed manually in the subsequent step, in particular to be filled.
- the risk can be reduced that an accidental double filling of an already filled first sample intake or an accidental omission of the filling of the correct target (here: the at least one second sample holder) for the manual pipetting.
- the filling of a sample receiving arrangement with a matrix-like arrangement of the sample holders is carried out in columns, in particular by means of a multichannel pipette.
- a pipetting plan program specified by the electronic control device in particular according to a pipetting program executable by a data processing device, which can be stored in particular in the electronic control device and which can be influenced or entered by the user by entering a program parameter via a user interface of the electronic control device. can be definable.
- the illumination of the wrong sample holder is changed, in particular a warning light activated, which preferably takes place through the wrong sample receiving light emitting element.
- the warning lighting can provide illumination with a certain signal color, eg "red", high intensity and / or pulsation of the light intensity (flashing) Additionally or alternatively to a warning illumination, the electronic control device emits an acoustic warning signal.
- a tare function or zeroing is provided in a follow-up pipetting provided according to a pipetting program in already pre-filled sample receptacles. In doing so, all illuminations are restored to their initial state, which is also provided for unfilled recordings (for example, deactivated illuminations and optical marking of the first target (s)). It is then at the re-delivery in the context of pipetting follow the target position (s) and the presence (s) of the tip of the sample transfer container on one or more respective targets (the sample intended for reprecipitation sample recording) and after delivery into the recording room also to display the respective occupancy status.
- additional output qualities, particularly illuminations, e.g., hues may be used to provide more clarity and / or safety.
- a sample receiving arrangement preferably has a coding section which uniquely identifies the individual sample receiving arrangement.
- the information about the assignments of the individual sample receiving arrangement may be stored in the form of occupancy data in an electronic control device or in a data storage device; these may be part of the base device, part of the pipetting aid system, or may be part of an external device, in particular a computer or laboratory device, in particular the manually operable electrical pipetting device used by the user for manual pipetting.
- the transmission of the assignment data to an external device can take place by cable or wireless, in particular via radio connection, in particular via a WLAN connection or Bluetooth.
- the output / the illumination on the sample receiving arrangement can, depending on the results of a method, be selected from the methods described here with the names: diagnostic method, registration method,
- Calibration method individual calibration method, position test method, connection test method.
- a logging of the dispensed volumes in the data storage device can take place in the form of pipetting delivery data.
- This pipetting delivery data can be stored together with the occupancy data, which can also be recorded as a function of individual sample recordings, or be related by an evaluation method and, in particular, compared with each other. This ensures, in particular with coded sample receiving arrangements, that even at a later point in time a reliable indication can be made of what volume was discharged or withdrawn and with what residual volume in the respective sample recording is still to be expected.
- the external devices and the base device can exchange, store and document data with one another, for example via cable or wirelessly, in particular with regard to the information about the correctness of the planned and manually performed pipetting process.
- the pipetting auxiliary system is set up for the execution of the following function: The user successively leads a pipetting device / a dispensing device from sample receptacle (s) to sample receptacle (s). By means of the measuring arrangement, the pipetting aid system recognizes the approach of the at least one sample transfer container connected to the pipetting device / dispensing device to the at least one sample receptacle.
- the pipetting device / the dispensing device automatically dispenses the respective intended volume to the at least one sample receptacle, in particular without an actuation of the release button for manually releasable delivery to the pipetting device / the dispensing device by the user.
- the pipetting aid system preferably has a pipetting device and / or a dispensing device, which are in a data connection with the electronic control device, in particular the base device.
- the electronic control device is set up to pass on the information about the occupancy state to the pipetting device and / or a dispensing device in the form of occupancy state data as soon as the approach of the tip of the sample transfer container to a sample receptacle has been recognized as a change in the occupancy state of the sample receptacle.
- the pipetting device and / or the dispensing device then performs a pipetting stroke of the pipetting piston of the pipetting device and / or the dispensing device, preferably corresponding to a specific pipetting volume, which can be individual, in particular for this sample receptacle, depending on the occupancy state data.
- the pipetting device and / or the Dispensing device can then output in particular an optical and / or acoustic signal to the user, with the success of the automatic Pipettierhubs is signaled.
- the pipetting aid system in particular the base apparatus, also communicates the position of the sample holders (eg "B1 1") with the pipetting device and / or the dispensing device via data connection and the pipetting device and / or the dispensing device can allocate the correct volume independent of order, which could provide advantages in randomizing assays to avoid effects from fixed, always identical pipetting schemes, overall, filling plates would be much more comfortable and fail-safe.
- the pipetting device and / or the dispensing device determines that the sample pickup reported by the pipetting aid system or the base device is not identical to the planned target position, ie the target sample pickup, the triggering is prevented (function: triggering stop), in particular by the Trigger button will be "dead” and a warning message will be issued to prevent the user from adding fluid to an incorrect sample receptacle, even if he presses the release button, which is particularly useful for valuable or one-off samples or another control device is preferably configured to execute a pipetting program, according to
- a user is informed by means of the output device of the information about the at least one sample receptacle of the sample receiving arrangement provided as the next target position for pipetting, * Detect by means of the measuring arrangement the manually performed approach of the at least one sample transfer container to the sample receiving arrangement and recognition of the position of the sample recordings now reached,
- the base device is preferably a tabletop device on which the sample receiving assembly is placed and / or attached to produce the processing position. In this case, where appropriate, the electrical contact between the contact points of the base device and the contact points of the sample receiving assembly is made; In the case of optical signal transmission of the sensor device, the optical coupling between the coupling points of the base device and the coupling points of the sample receiving device is produced analogously.
- the base device preferably has a positioning region over which the positioning space for receiving the sample receiving arrangement is located.
- the positioning region may have a flat surface, in which preferably the output device, in particular the lighting arrangement and in particular a matrix is provided from contact points or coupling points, in order to connect the measuring arrangement with the electronic control device in the processing position.
- the measuring elements in particular the electrodes in the case of a capacitive measurement, can also be arranged on the positioning space, in particular in contact with the positioning space, so that they engage in the positioning space only along a fraction of the total height of the positioning space or preferably do not engage in the positioning space. This makes the arrangement of the measuring elements compact and robust, and also the sample receiving arrangement is easier to construct.
- the base device in particular the electronic control device, can also be networked or networked with other laboratory devices, such as an electronic pipetting device or a computer, via a data connection, in particular in order to transmit the information about the occupancy state of the individual sample receptacles.
- laboratory devices such as an electronic pipetting device or a computer
- the base device in particular the electronic control device, may also be part of a laboratory device, in which case the pipetting aid system for assisting manual pipetting is partially integrated in this case. While no manual pipetting aid is needed in the process of automatic pipetting, it is conceivable that manual filling and pipetting may be desired in a laboratory machine.
- the pipetting auxiliary device or the basic device can also be part of a laboratory automaton. This laboratory automaton can be set up to store and / or process and / or forward the information about the occupancy statuses detected by means of the measuring arrangement as data.
- the base device preferably has the output device or the lighting arrangement.
- the pipetting aid system preferably has at least one first and one second base device, in particular at least two base devices designed according to the invention.
- the pipetting aid system preferably has at least two Measuring arrangements on.
- a first measuring arrangement of the first base device is assigned and associated with a second measuring arrangement of the second base device.
- the pipetting aid system preferably has at least two dispensing devices.
- a first output device is assigned to the first base device and a second output device is assigned to the second base device.
- control device is set up to control both the first measuring arrangement, the second measuring arrangement, the first output device and / or the second output device.
- the control device is preferably set up to determine the first occupancy state of at least one sample receptacle arranged on the first base device by controlling the first measurement arrangement, and preferably by controlling the first output device the user in dependence on the first occupancy state of the at least one sample receptacle to spend over their first occupancy state.
- control device is adapted to provide the user with information about the-eg, depending on the first occupancy state measured at the first base device. according to a Pipettierplanprogramm pending to be pipetted target position on the second base device.
- this is to provide the user with assistance in transferring samples from a first sample receiving assembly (e.g., microtiter plate) to a second sample receiving assembly (e.g., microtiter plate).
- the control device is preferably set up to determine the second occupancy state of at least one sample receptacle arranged on the second base device by controlling the second measurement arrangement, and preferably by controlling the second output device the user in dependence on the second occupancy state of the at least one sample receptacle output via the second occupancy state.
- a sample receiving arrangement is preferably a microtiter plate (English: Well plate), which, in particular in the case of the second preferred embodiment of the invention, according to at least one SLAS standard can be made.
- the microtiter plate may be arranged according to one or more or any of the following industry standards: ANSI SLAS 1 -2004 (R2012) (Footprint Dimensions last updated January 9, 2004); ANSI SLAS 2-2004 (R2012) (Height Dimensions, last updated January 9, 2004); ANSI SLAS 3-2004 (R2012) (Bottom Outside Flange Dimensions, last updated January 9, 2004); ANSI SLAS 4-2004 (R2012) (Well Positions, last updated January 9, 2004); ANSI SLAS 6-2012 (Well Bottom Elevation).
- a sample receiving assembly is preferably a solid composite of a plurality of sample receptacles.
- the sample holders can be connected via a connecting plate or via connecting webs.
- the sample holders may be containers that are open at the top.
- the sample receptacles may be arranged in a grid array of typically 12, 48, 96, 384 or more sample receptacles.
- rows and columns of the sample holders are perpendicular to one another, in particular in the known geometries of 3x4, 6x8, 8x12, 16x24.
- the measuring elements and / or the lighting elements are preferably provided in the same arrangement, or in an adapted to this sample receiving geometry arrangement.
- a sample receiving arrangement is preferably a coherent, in particular integrally formed component.
- a sample receptacle may be a holder for a sample container, wherein the sample container may be a single vessel or a multiple vessel.
- a sample receiving arrangement may be a holding frame with openings or recesses or without openings or recesses, each of which may be designed to receive a single vessel or a well of a microtiter plate.
- one or two measuring elements can each be arranged in the processing position at an opening, in particular by being firmly connected to the holding frame.
- the pipetting device is preferably a hand-held device. For this purpose, it preferably has a grip portion.
- the base body is formed as a handle portion which is gripped by the user's hand to hold the pipetting device, and in particular to move and operate.
- the pipetting device is designed for one-handed operation, so that all operations required for pipetting can be performed with one hand.
- the pipetting devices include in particular hand-operated pipettes.
- single-channel devices and multi-channel devices with single-channel devices containing only a single delivery channel and multichannel devices containing a plurality of delivery channels, which in particular allow the parallel dispensing / picking up of the sample.
- a dispenser typically has a fluid transfer container with a larger maximum receiving volume than a pipette, and serves to enable the user to perform a variety of dispensing steps without having to refill the fluid transfer container more often.
- dispenser also responsible for the suction / discharge displacement piston in the fluid transfer container, namely the Dispenserspitze is housed.
- the base body of the pipetting device preferably has a housing in which the movement device can be arranged at least partially or completely.
- the control device is at least partially or completely arranged in the base body.
- the movement device serves for the movement of the fluid for its transfer and serves in particular for the admission of the fluid into the container and the discharge of the fluid from the container.
- a hand-operated movement device this preferably has an actuating element, in particular a control knob, by the actuation of which the user applies the force to move the fluid.
- the force for moving the movement device is applied by means of an electrical energy source, which in particular can be a battery or an accumulator and which can be a component of the pipetting device, in particular of the base body.
- the movement device preferably has a piston device with a piston which is movable in a cylinder of the piston device in order to generate a negative pressure in this cylinder.
- the movement device can also be designed to move a piston which is only partially or not at all part of the pipetting device, such as e.g. during the movement of the piston of a syringe container is the case.
- the pipetting device and / or the pipetting aid system preferably has at least one communication device and / or a user interface, in particular a control element, which in particular serves for the input and / or output of information between the user and the control device.
- the operating element may have at least one control knob or keyboard, at least one display, in particular a touch screen and / or at least one loudspeaker.
- the positioning device is configured to effect a reliable relative positioning of the sample receiving arrangement and of the base device, so that the further system components, in particular the measuring elements and / or the lighting arrangement, each assume a single relative position with respect to the sample receiving arrangement and the base device. This improves the precision in handling the pipetting aid system.
- the Positioning means may comprise one or more support portions provided on the base device for supporting, holding or suspending the sample receiving assembly.
- a support portion may be a support portion, in particular a plate portion on which the sample receiving assembly is parked. By at least one, two three or four further support portions, the sample receiving assembly can be positioned clearly and backlash in the lateral direction.
- These support sections may be realized by projection devices which serve as stops whose position is precisely matched to the external dimensions of the sample receiving arrangement.
- the positioning device can have at least one position sensor with which the manual arrangement of the sample receiving arrangement in the positioning space is registered by the electronic control device of the base device.
- the invention further relates to the base device as described in connection with the pipetting aid according to the invention according to the first, second and third preferred embodiment of the invention, to assist the manual pipetting of a plurality of samples in a processing position of a sample receiving assembly, as in particular in connection with the invention Pipetting aid system has been described.
- the base device comprises: a positioning device which is arranged for positioning a preferred embodiment of the sample receiving arrangement according to the invention in the processing position within a positioning space of the base device which is open at least along a plane for pipetting, preferably a lighting arrangement arranged in the processing position below this plane, with which the sample receiving arrangement can be illuminated as a function of the occupancy state, which can be illuminated by means of the measuring elements of a preferred embodiment of the pipetting aid system according to the invention, in particular of a device according to the invention
- the invention further relates to the sample receiving assembly as described in connection with the pipetting aid system according to the first, second and third preferred embodiments of the invention, for assisting manual pipetting of a plurality of samples in a processing position of the sample receiving assembly suitable for positioning in the positioning means of one particular
- the sample receiving arrangement comprises: a plurality of sample receptacles, a measuring arrangement with a plurality of measuring elements, which are arranged at least in the processing position below this level and with which the occupancy state of at least one sample receptacle in the processing position can be detected.
- the invention further relates to a method for measuring an occupation state of a sample holder by means of a pipetting auxiliary system according to the invention. Further preferred aspects of this method can be taken from the present description of the invention.
- the method comprises the steps of measuring the occupation state by measuring a capacitance value or its change by means of at least one measuring element designed as an electrode, when a conductive sample transfer container or a sample transfer container made of nonconductive material filled with a conductive sample this electrode is introduced and in particular touches the plane or passes through the plane.
- the invention further relates to a production method for producing a sample receiving arrangement according to the invention by means of an injection molding technique, in particular the realization of at least one electrical line or an electrode or an electrical contact point of the sample receiving device by means of a conductive polymer.
- a production method for producing a sample receiving arrangement according to the invention by means of an injection molding technique, in particular the realization of at least one electrical line or an electrode or an electrical contact point of the sample receiving device by means of a conductive polymer.
- FIG. 1 a shows a perspective side view of an application scenario on which the invention is based, in which a complete filling by means of successive column-wise pipetting is carried out on a 96-well microtiter plate by means of a manually operated multichannel pipette.
- FIG. 1 b shows a perspective side view of an application scenario on which the invention is based, in which a complete filling by means of randomized pipetting is carried out on a 96-well microtiter plate by means of a manually operated electrical single-channel pipette.
- FIG. 2 a shows a sample receiving arrangement according to the first preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system according to the invention.
- FIG. 2b shows a base device according to the first preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system according to the invention, in particular usable with the sample receiving device in FIG. 2a.
- Fig. 2c shows a pipetting aid system in the processing position comprising the sample receiving assembly of Fig. 2a and the base apparatus of Fig. 2b.
- 3a shows a sample receiving arrangement according to a further exemplary embodiment of the invention, as a preferred component of an exemplary pipetting aid system according to the invention.
- FIG. 3b shows a base device according to a further exemplary embodiment of the invention, as a preferred component of an exemplary pipetting aid system according to the invention, in particular usable with the sample receiving arrangement in FIG. 3a.
- Fig. 3c shows a pipetting aid system in the processing position comprising the sample receiving assembly of Fig. 3a and the base apparatus of Fig. 3b.
- FIGS. 4 a to 4 d each show different phases of the pipetting assisted by means of an exemplary pipetting auxiliary device according to the invention on a sample receiving arrangement, and shows the optical marking of the pipetting samples to be pipetted or pipetted by an illumination program of the pipetting auxiliary device.
- FIGS. 5a and 5b show a simplified lateral cross-sectional view through a sensor device, which measures capacitively by means of two cylindrical jacket-shaped electrodes, of an exemplary pipetting aid system in the unfilled and filled state of the single sample receptacle shown.
- FIGS. 5c and 5d show a simplified lateral cross-sectional view through a sensor device of an exemplary pipetting aid system measuring capacitively by means of two cylindrical jacket-shaped electrodes with a spherical bottom, in the unfilled and filled state of the single sample receptacle shown.
- FIGS. 5e and 5f show a simplified lateral cross-sectional view through a sensor device, which measures capacitively by means of two cylindrical jacket-shaped electrodes with a conical bottom, of an exemplary pipetting aid system in the unfilled and filled state of the single sample receptacle shown.
- FIGS. 6a and 6b show a simplified lateral cross-sectional view through a sensor device, measuring capacitively by means of an electrode, of another exemplary pipetting aid system, in the unfilled and filled state of the single sample receptacle shown.
- FIGS. 7a and 7b show a simplified lateral cross-sectional view through a sensor device of another exemplary pipetting aid system which optically measures by means of two optical measuring elements, in the unfilled and filled state of the single sample receptacle shown.
- FIG. 8 a shows a sample receiving arrangement according to the second preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system according to the invention.
- Fig. 8b shows a base device according to the second preferred embodiment of the invention in one embodiment, as a preferred part of an exemplary pipetting aid according to the invention, in particular usable with the sample receiving device in Fig. 8a.
- Fig. 8c shows a pipetting aid system in the processing position comprising the sample receiving assembly of Fig. 8a and the base apparatus of Fig. 8b.
- Fig. 9a shows a sample receiving arrangement according to the third preferred embodiment of the invention in an embodiment, as preferred
- Fig. 9b shows a base device according to the third preferred embodiment of the invention in one embodiment, as a preferred part of an exemplary pipetting aid according to the invention, in particular usable with the sample receiving device in Fig. 9a.
- Fig. 9c shows a pipetting aid system in the processing position comprising the sample receiving assembly of Fig. 9a and the base apparatus of Fig. 9b.
- FIG. 10a shows a perspective view of a pipetting system according to the invention according to a further preferred embodiment.
- 10b shows a perspective view of a pipetting system according to the invention according to a further preferred embodiment
- FIG. 1 1 a shows a sample receiving arrangement according to the second preferred embodiment of the invention in one embodiment, as a preferred component of an exemplary pipetting aid system according to the invention.
- FIG. 11 b shows a base device according to the second preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system according to the invention, in particular usable with the sample receiving arrangement in FIG. 11a.
- Fig. 11c shows a pipetting aid system, in the processing position, having the sample receiving arrangement of Fig. 11a and the base device of Fig. 11b.
- FIGS. 11b and 11c shows a simplified lateral cross-sectional view through a sensor device of an exemplary pipetting aid system measuring capacitively by means of two plate-shaped electrodes in the filled state of the single sample receptacle shown, wherein the sensor device corresponds to the sensor devices shown in FIGS. 11b and 11c.
- FIG. 12 b shows a simplified lateral cross-sectional view through a sensor device, which measures capacitively by means of two plate-shaped electrodes, of an exemplary pipetting aid system, in the filled state of the single sample receptacle shown.
- FIG. 12 c shows a simplified lateral cross-sectional view through a sensor device, which measures capacitively by means of two plate-shaped electrodes, of an exemplary pipetting aid system, in the filled state of the single sample receptacle shown.
- Fig. 1a shows a typical application scenario underlying the invention.
- a complete filling of the microtiter plate by means of successive column-wise pipetting in the direction F is carried out by means of a manually operated multichannel pipette 70.
- Eight pipette tips 71 correspond to the number and pattern of a 8-column of the 96-well microtiter plate. In the example, the pipette tips 71 are refilled successively to fill all the sample receptacles of the microtiter plate by the successive pipetting.
- Pipetting requires positioning the pipette 70 over the target well of the wells of the microtiter plate, lowering along the vertical direction V, and properly contacting the wells' openings with the pipette tips 71, further lowering into the wells, and dispensing the sample by pipetting. This is followed by the lifting of the pipette from the lowered position and the movement along the direction F by exactly one column spacing. Above the second column, the described processes are repeated accordingly, as well as in the columns number 3 to 12.
- a pipetting aid system which guides the user without errors in such situations by measuring the occupancy and optical marking.
- Fig. 1b shows a scenario in which the user has to fill a microtiter plate 69 by means of a single-channel electric pipette 70 '.
- the task for the user in this figure is to reliably maintain a pipetting plan on the microtiter plate, which involves pipetting individual vessels according to a non-successive procedure.
- coordinates of the sample containers or sample containers to be filled or the sample containers can be known to the user, on each of which a sample is to be removed by pipetting and, for example, transferred.
- a significant effort of the user is necessary to pipette to the correct well. Even more difficult for the user in the case of a sample plate with more than 96 wells, eg 384 wells.
- the invention offers a very advantageous solution.
- FIG. 2 a shows a sample receiving arrangement 20 according to the first preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system according to the invention.
- the sample receiving assembly 20 is in the format of a microtiter plate made to SBS standard.
- the sample receiving assembly 20 is essentially made of transparent plastic by means of 2K injection molding and has a matrix of 96 sample receptacles 21 (wells), of which a series with 12 sample receptacles 21 is shown in cross section.
- the sample receiving arrangement 20 has a measuring arrangement 28 with a multiplicity of measuring elements, here for example 192 measuring elements, of which in each case a pair 22, 23 of measuring elements formed as electrodes are arranged so as to enclose the receiving space of the sample receptacle 21 like a dielectric between capacitor plates.
- FIG. 2 c shows the processing position in which the pipette tips 71 are pipetted in order to successively fill the entire microtiter plate 20. It follows that the measuring elements 22, 23 of the measuring arrangement 28 are arranged at least in the processing position below the plane A, wherein with a pair 22, 23 of electrodes, the occupation state of at least one sample holder 21 in the processing position can be detected.
- FIG. 2b shows a base device 10 according to the first preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system according to the invention, in particular usable with the sample receiving device 20 in FIG. 2a.
- the base device 10 comprises: a positioning device having a plurality of projection elements 12a, 12b and arranged to position the sample receiving device in the machining position within a positioning space 11 of the base device which is open at least along a plane A for pipetting.
- the base device 10 has a lighting arrangement 18 arranged in the processing position below this plane A, with which the sample receptacles of the sample receiving arrangement 20 can be illuminated as a function of the respectively measured occupancy states measured by means of the measuring elements 22, 23 of the sample receiving arrangement 20.
- the light-emitting elements 19 formed in each case in the form of LEDs can be controlled individually by the electrical control device 13 via the lines of a line bundle 14, with which they are electrically coupled via an electrical interface 13a.
- the base device preferably has a solid housing made of metal and / or plastic, in which the lighting arrangement and the control device are arranged.
- the measuring elements 22, 23 of the microtiter plate 20 are electrically connected via electrical contact points 26, 27 with corresponding contact points 16, 17, which are arranged on the upper side of the plate-like receiving region of the base device 10 in the receiving space 1 1.
- the contact points 16, 17 are each connected via lines 15a, 15b to an electrical interface 13b, with which the measuring elements are coupled to the control device 13.
- All first measuring electrodes 22 of the sensor devices of the series of sample receptacles 21 shown here are connected here to the line 15a
- all second measuring electrodes 23 of the sensor devices of the series of sample receptacles 21 shown here are connected here to the line 15b. Due to the sensitive measuring electronics for the measurement of very small capacitances, reliable and reliable in this circuit-saving way Occupancy state measurements successively possible on all sensor devices of the series, wherein in each case 8 sensor devices are measured simultaneously in columns.
- the positioning device 12a, 12b reliably positions the microtiter plate 20 in the positioning space 11.
- Fig. 2c shows a pipetting aid system in the processing position comprising the sample receiving assembly of Fig. 2a and the base apparatus of Fig. 2b.
- the pipetting auxiliary system 1 serves to assist the manual pipetting of a plurality of samples in a processing position of a sample receiving device 20, the pipetting auxiliary system 1 comprising: a base device 10 with a positioning device 12a, 12b, which is used to position the sample receiving device 20 in the processing position within a positioning space 11 the base device 10 is arranged, which is open at least along a plane (A) for pipetting, the sample receiving assembly 20, which has a plurality of sample receptacles 21, a measuring arrangement 28 with a plurality of measuring elements 22, 23, at least in the processing position below This level A are arranged and with which the occupancy state of at least one sample holder 21 can be detected in the processing position, and a arranged at least in the processing position below this level A light assembly 18, with which the Probenfactano or whose sample receptacles 21 can be illuminate
- FIG. 3a shows a sample receiving assembly according to another embodiment of the invention. as a preferred constituent of an exemplary pipetting aid system according to the invention.
- the sample receiving assembly 40 is here each at the top of a sample receiving a single ring electrode 42, whose function is explained with reference to Figures 6a and b. Accordingly, compared to the design according to FIG. 2 a, fewer lines 44 and contact points 46 are provided on the sample receiving arrangement, and fewer lines 35 a, and contacts 36 are provided in comparison with the design according to FIG.
- the operation of the pipetting aid systems in Figs. 2a-c and 3a-c is similar.
- the individual electrode in the upper region of the sample receptacle, according to FIGS. 3 a and 6 a, can also be combined with the variant in FIGS. 2 a and 5 a / 5 c, in which pairs of electrodes extend along a majority of the length of the sample receptacles in the vertical direction , Functionally, it is achieved in this way that information can be obtained with a single pipetting aid system as to whether or when a pipette tip approaches the measuring space and what occupation state with liquid sample has the sample receptacle in its receiving space.
- FIGS. 4 a to 4 d each show different phases of the pipetting assisted by means of an exemplary pipetting auxiliary device 1 according to the invention on a sample receiving device 20, and shows the optical marking of the pipetting samples to be pipetted or pipetted by an illumination program of the pipetting auxiliary device.
- the sample holder When lowering a pipette tip through the plane A (Fig. 4b), the sample holder is illuminated, for example from below in yellow color, which is symbolized here by a lighter hatching of the outside right sample recordings.
- the already filled images are illuminated from below in green light, which is symbolized in Fig. 4c and 4d by a dark hatching of the corresponding sample recordings.
- FIGS. 5a and 5b show a simplified lateral cross-sectional view through a sensor device, measuring capacitively by means of two electrodes, of an exemplary pipetting aid system in the unfilled and filled state of the single sample receptacle shown.
- the space between a pair of electrodes 22, 23 each having a cylindrical shell segment shape laid around the receiving space 21, forms a dielectric penetrated by the electric field E, so that a capacitance change is detected when the occupying state changes in FIG. 21 (FIG. 5b).
- the arrangement of FIGS. 5c and 5d differs from that of FIGS. 5a and 5b essentially in that the receiving space 21 'of the variant in FIGS. 5c and 5d has a substantially spherical bottom (round bottom).
- the electrodes 22 ', 23' are in this case adapted to this spherical shape and therefore have a spherical plate shape in their lower region.
- the arrangement of Figures 5e and 5f differs from that of Figures 5a and 5b essentially in that the receiving space 21 "of the variant in Figures 5e and 5f has a substantially conical bottom (conical bottom)
- ", 23" are adapted to this conical shape and therefore have a conical plate shape in their lower area
- a luminous element (not shown) of the dispensing device can each form part of the sample receiving arrangement 20 or of the base device 10.
- FIGS. 6a and 6b show a simplified lateral cross-sectional view through a sensor device, measuring capacitively by means of an electrode, of another exemplary pipetting aid system, in the unfilled and filled state of the single sample receptacle shown. It is detected by means of a single ring electrode 42, which is arranged at the upper edge of the sample holder 41, the approach of a conductive or stocked with leimonter aqueous solution pipette tip of non-conductive material. The approach of the pipette tip increases the measured capacitance so that, at a suitable threshold, the "pipette tip on" occupancy state is seen.
- the ring electrode 42 is partially surrounded by the material of the sample receiving assembly 40, the ring electrode 42 is below the plane A.
- the ring electrode may also be disposed on a surface of the sample receiving assembly 40, and may be applied, for example, as a thin plate, foil, or layered region, and this arrangement on the surface of the sample receiving assembly 40 ensures that the sample receiving assembly 40, including its measuring assembly, is below level A.
- a light-emitting element (not shown) of the dispensing device may each form part of the sample-receiving arrangement 40 or the base device 30.
- FIG. 7a and 7b show a simplified lateral cross-sectional view through a sensor device, measuring optically by means of two optical measuring elements, of another exemplary pipetting aid system, in the unfilled and filled state of the single sample receptacle shown.
- a light beam (infrared) emitted by the LED 66 is incident on the mirror element 83, which directs the beam through the measuring space 81 and to the next mirror element 84. From there, the beam is directed to the light sensor 67, which may in particular be a photodiode or a CMOS sensor.
- the electrical control of the optical sensor device associated optical measuring elements 66, 67 which are arranged in the base device 60, via the likewise arranged there individual lines 65a, 65b.
- a light emitting element (not shown) of the dispenser may be part of the sample receiving assembly 80 or the base device 60, respectively.
- FIG. 8 a shows a sample receiving arrangement 120 according to the second preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system according to the invention.
- the luminous elements 1 18a are arranged here in each case centrally and vertically below the sample receptacle 121, so that it can be illuminated symmetrically.
- FIG. 8b shows a base device according to the second preferred embodiment of the invention in one embodiment, as a preferred component of an exemplary pipetting aid system according to the invention, in particular usable with the sample receiving device in FIG. 8a.
- the positioning device 12a, 12b is manufactured.
- Fig. 8c shows a pipetting aid system in the processing position comprising the sample receiving assembly of Fig. 8a and the base apparatus of Fig. 8b.
- the plurality of measuring elements 1 16, 1 17 of the measuring arrangement 1 19 and the lighting arrangement 1 18 with Illuminating elements 1 18a fixed components of the base device 1 10.
- the sample receiving assembly 120 has a plurality of opening portions 122, 123 for receiving the measuring elements 1 16, 1 17 in the processing position.
- Such a sample receiving assembly 120 which need not have electrical leads or electrically conductive portions, can be manufactured simply and precisely by injection molding.
- FIG a shows a sample receiving arrangement according to the third preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system according to the invention.
- the plurality of gauges 222, 223 of the gauging assembly 228 and a plurality of glows 224 of the light assembly 229 are integral with the sample receiving assembly.
- the remaining parts are manufactured substantially analogously to the embodiments in FIGS. 2c and 8c.
- FIG. 9b shows a base device according to the third preferred embodiment of the invention in one embodiment, as a preferred component of an exemplary pipetting aid system according to the invention, in particular usable with the sample receiving device in FIG. 9a.
- Fig. 9c shows a pipetting aid system in the processing position comprising the sample receiving assembly of Fig. 9a and the base apparatus of Fig. 9b.
- 10 shows a perspective view of a pipetting system 300 according to the invention in accordance with a further preferred embodiment.
- Two base devices 10, 10 " which may substantially correspond, for example, to the base device shown in Fig. 2b, communicate via the signal exchange / data exchange line" D ".
- the sample receiving devices are designed here as shown in Fig. 2a.
- the controllers of this base device which can communicate with each other, are arranged to assist the user of the manual pipetting device 70 in performing a transfer process.
- the user is to take samples from first columns of the sample plate 20 by means of a pipette 70 and transfer them to second sample columns of the sample plate 20 " This is symbolized in Fig. 10 by the darker tint of the first column of sample receptacles of the sample plate 20.
- the user now picks up the samples by pipetting in this column Failure of removal from this first column of the sample plate 20 is signaled by the system by a change in the illumination of that first column of the sample plate 20. Success is tested with the measuring arrangement of the sample plate 20.
- the user becomes the target position for the now in the pipettes 71 contained samples, here the fourth column from the right, indicated by illumination.
- the user now dispenses the samples by pipetting in this column. After dispensing, the user is signaled the success or failure of dispensing into this fourth column of the sample plate 20 "by the system by changing the illumination of this fourth column of the sample plate 20". Success is tested with the probe plate assembly 20 "assembly. This assistance in transferring the samples between two sample receiving assemblies monitored by the pipetting aid system continues until the pipetting program is completed.
- FIG. 10 b shows a pipetting aid system 400 which has as its component a pipette 70 '.
- the pipette 70 'or its electronic control device-which also controls the electronically operated pipetting of the pipetting device 70' - is set up with the electronic control device of the base device 10 "of the pipetting auxiliary system via a signal connection, here wireless data connection W to exchange signals or data, in particular data of a pipetting program and occupancy status data.
- the electronic control device of the pipetting device 70 ' is configured to control the measuring arrangement via the electronic control device of the pipetting auxiliary device and to receive the information about the occupancy state in the form of occupancy state data.
- electronic control device also controls the output device - this means that the electronic control device of the pipetting device 70 'can be used as the electronic control device of a pipetting auxiliary system.
- the electronic control device is set up to detect the approach of the at least one sample transfer container 71 connected to the pipetting device to the at least one sample receptacle by measurement by means of the measuring arrangement, and to control the pipetting device so that it automatically delivers the respective intended volume to the at least one sample receptacle emits.
- the electronic control device or the second control device is configured to execute a pipetting program, according to
- the measuring arrangement determine the manually performed approach of the at least one sample transfer container to the sample receiving arrangement and recognition of the position of the sample recordings now reached,
- Target position is to automatically deliver a predetermined sample volume to the target position
- Target position is to prevent this automatic delivery.
- a pipetting auxiliary system By means of a pipetting auxiliary system according to the invention, users work confusion-proof in, in particular, sample receiving arrangements consisting of plates, strips and vessels. The user always knows which wells in one Process are to be filled next, and what occupancy state is present.
- the basic device is a mobile, compact plate-receiving tool with a small footprint It is particularly built-in laboratory workstations for additional control of experiments performed.
- a sample receiving assembly can be made as required as a closed system, particularly when using 2K injection molded sample receiving assemblies, which in particular comprise a conductive polymer as electrically conductive regions.
- a sample receiving assembly may also be fabricated as an "open system", i.e. with openings or recesses for receiving, for example, capacitive sensing plates or sensor columns (see Fig. 8a) disposed on the base device.
- FIG. 1 a shows a sample receiving arrangement 120 'according to the second preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system 100' according to the invention.
- the sample receiving assembly 120 ' here has only a single cavity 122' which extends below all the sample receptacles 121 'of the sample receiving assembly 120', and which is open at the bottom, so that Measuring electrodes 1 16 ', 1 17' can engage in the cavity 122 '.
- FIG. 1 b shows a base device 1 10 'according to the second preferred embodiment of the invention in one exemplary embodiment, as a preferred component of an exemplary pipetting aid system 100' according to the invention, in particular usable with the sample receiving arrangement in FIG. 11a.
- the measuring electrodes 1 16 ', 1 17' of the measuring arrangement 1 19 ' are connected via lines 1 15a, 15b to the control device 1 13 and are firmly connected to the base device 1 10', which is constructed beyond the base device 1 10.
- Fig. 11c shows a pipetting auxiliary system 100 ', in the processing position, comprising the sample receiving arrangement of Fig.
- a measuring electrodes 1 16 ', 17' of a sensor device are arranged in the region below a sample receptacle 121 'and laterally offset therefrom, so that the sample receptacle is detected by the electric field between the electrodes 16' and 1 17 'is formed and which also extends in the region above the electrodes 1 16', 1 17 '.
- the sample holders are cylindrical, but could also be conical or rounded, or could be shaped differently.
- the liquid arranged in this area also contributes to influencing the measurement or the liquid arranged there can be detected and the corresponding fill level can be differentiated from another fill level in which there is no liquid in the area above this space and this is only in the space.
- the measuring arrangement 1 19 is particularly compact and robust.
- FIG. 12 a shows a simplified lateral cross-sectional view through a sensor device of an exemplary pipetting aid system measuring capacitively by means of two planar plate-shaped electrodes 1 16 ', 17', in the filled state of the single sample receptacle shown, wherein the sensor device has the position shown in FIG. 11 b and 1 1 c corresponds to sensor devices.
- the sample receiving assembly 120 "and 120 'and the sample receiving 120" and 120' correspond to each other.
- a light-emitting element (not shown) of the output device may each form part of the sample-receiving arrangement 120 ', 120 "or the base device 1 10', 1 10".
- FIG. 12 b shows a simplified lateral cross-sectional view through a sensor device of an exemplary pipetting aid system measuring capacitively by means of two plate-shaped electrodes 1 16 ", 17", in the filled state of the single sample receptacle shown.
- the measuring electrodes 1 16 “, 1 17" of the sensor devices are here integrated into the surface of the base device 1 10 ".
- the measuring electrodes 1 16", 1 17 are here planar and plate-shaped and extend parallel to the surface of the Base device.
- the measuring electrodes 1 16 “, 17” do not project into the positioning space in which the sample receiving arrangement 120 "is arranged in the processing position, which therefore does not require a cavity for the engagement of the measuring electrodes, such a cavity would also be possible, since the By arranging the measuring electrodes in the area below the positioning space, this solution is particularly compact and robust a protective layer or cover may be provided without rendering the measurement ineffective, thus providing an easy-to-clean surface which protects the measuring electrodes.
- FIG. 12c shows a sensor device which differs from the sensor device shown in FIG. 12b in that the plate-shaped electrodes 16 '"and 17' '' have a larger area than the plate-shaped electrodes 16 '' and 17 '' of FIG.
- Electrodes 1 16 "', 1 17"' are each that of a semicircle, the straight edges of the semicircle being parallel to and adjacent to each other - visible in the figure as a gap between the electrodes.
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
- Sampling And Sample Adjustment (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP17171137.7A EP3403725A1 (de) | 2017-05-15 | 2017-05-15 | Pipettierhilfssystem |
| PCT/EP2018/062343 WO2018210728A1 (de) | 2017-05-15 | 2018-05-14 | Pipettierhilfssystem |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3624945A1 true EP3624945A1 (de) | 2020-03-25 |
| EP3624945B1 EP3624945B1 (de) | 2022-04-27 |
Family
ID=58709397
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17171137.7A Withdrawn EP3403725A1 (de) | 2017-05-15 | 2017-05-15 | Pipettierhilfssystem |
| EP18724536.0A Active EP3624945B1 (de) | 2017-05-15 | 2018-05-14 | Pipettierhilfssystem |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17171137.7A Withdrawn EP3403725A1 (de) | 2017-05-15 | 2017-05-15 | Pipettierhilfssystem |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12115528B2 (de) |
| EP (2) | EP3403725A1 (de) |
| JP (1) | JP7121754B2 (de) |
| CN (1) | CN110621408B (de) |
| WO (1) | WO2018210728A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3831486A1 (de) * | 2019-12-06 | 2021-06-09 | Eppendorf AG | Pipettenspitzenfamilie umfassend pipettenspitzen für den gebrauch mit pipetten einer pipettenfamilie und pipettenfamilie umfassend pipetten für den gebrauch mit pipettenspitzen einer pipettenspitzenfamilie |
| KR102492404B1 (ko) * | 2020-11-16 | 2023-01-27 | (주)제노텍 | 마이크로플레이트 분주 보조 장치 |
| CN116782999A (zh) * | 2021-01-25 | 2023-09-19 | 艾本德欧洲股份有限公司 | 手持式移液设备 |
| WO2022255532A1 (ko) * | 2021-06-01 | 2022-12-08 | 주식회사 티앤알바이오팹 | 인간 전분화능줄기세포 유래 심근세포를 이용한 약물의 부정맥 위험성 평가 방법 |
| WO2023086302A1 (en) * | 2021-11-09 | 2023-05-19 | Beckman Coulter, Inc. | Automated pipette tip organizing for fluid handling systems |
| EP4393598A1 (de) * | 2022-12-27 | 2024-07-03 | TECAN Trading AG | Temperaturausgleichsplatte für einen mikroplattenleser und mikroplattenleser mit einer solchen temperaturausgleichsplatte |
| CN116170470B (zh) * | 2023-02-28 | 2023-07-04 | 北京科易为科技有限公司 | 移液器系统的数据通讯方法及其通讯系统 |
| CN117310200B (zh) * | 2023-11-28 | 2024-02-06 | 成都瀚辰光翼生物工程有限公司 | 移液点位校准方法及装置、移液控制设备和可读存储介质 |
| DE102024108756A1 (de) * | 2024-03-27 | 2025-10-23 | Syntegon Technology Gmbh | Anlage zum Abfüllen von Abfüllgut in Behältnisse mit Füllstandsüberwachung |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5380493A (en) * | 1992-03-27 | 1995-01-10 | Chavez; Jeffery B. | Cell well plate holder and well marking system |
| JP3282455B2 (ja) | 1994-07-28 | 2002-05-13 | 株式会社日立製作所 | 液体採取方法および装置 |
| JPH11218437A (ja) | 1998-02-03 | 1999-08-10 | Mitsubishi Kagaku Bio Clinical Laboratories Inc | 微量液量判別装置 |
| JP2000019099A (ja) | 1998-06-30 | 2000-01-21 | Hamamatsu Photonics Kk | タイタプレート |
| US20040160328A1 (en) * | 2003-02-13 | 2004-08-19 | Jackson, Msc., Inc. | Non-contact liquid sensing apparatus, system, and method |
| US7544330B2 (en) * | 2005-09-28 | 2009-06-09 | Idexx Laboratories, Inc. | Microplate sample tracking system |
| US7482939B2 (en) | 2005-11-15 | 2009-01-27 | Roche Molecular Systems, Inc. | Electrical drop surveillance |
| JP2008161833A (ja) | 2006-12-28 | 2008-07-17 | Juki Corp | 洗浄装置 |
| US7726212B2 (en) * | 2007-06-29 | 2010-06-01 | Rainin Instrument, Llc | Hybrid manual-electronic pipette |
| US20090010811A1 (en) | 2007-07-05 | 2009-01-08 | Chan Richard T L | System for Selective Illumination of Well Plates |
| EP2167983A4 (de) * | 2007-07-11 | 2013-05-29 | Marimils Oy | Verfahren und vorrichtung zur kapazitiven erfassung von objekten |
| EP2207039A3 (de) | 2008-10-17 | 2011-05-04 | Roche Diagnostics GmbH | Verfahren und System zur Messung von Flüssigvolumen und zur Steuerung von Pipettierverfahren |
| US9775819B2 (en) * | 2009-09-16 | 2017-10-03 | R.P. Scherer Technologies, Llc | Oral solid dosage form containing nanoparticles and process of formulating the same using fish gelatin |
| CH702942A1 (de) | 2010-03-31 | 2011-10-14 | Tecan Trading Ag | Kapazitives Messverfahren und Vorrichtung zur Füllstandsdetektion und entsprechend ausgestattetes Laborgerät. |
| US8763454B2 (en) | 2010-03-31 | 2014-07-01 | Tecan Trading Ag | Capacitive measuring method and apparatus for fill level detection and correspondingly equipped laboratory equipment |
| DE102010052975A1 (de) * | 2010-11-30 | 2012-05-31 | Bruker Daltonik Gmbh | Verfahren und Probenträger für die Unterstützung der händischen Präparation von Proben für eine Ionisierung mit matrix-unterstützter Laserdesorption |
| WO2012158308A2 (en) | 2011-05-13 | 2012-11-22 | Actrace, Llc | Methods and systems for automated pipette tracking |
| ES2683773T3 (es) * | 2012-05-30 | 2018-09-27 | Bruker Daltonik Gmbh | Procedimiento y dispositivo de proyección de imágenes para asistir en la preparación manual de muestras-MALDI |
| US9035752B2 (en) * | 2013-03-11 | 2015-05-19 | Amazon Technologies, Inc. | Force sensing input device under an unbroken exterior portion of a device |
| CH708820A1 (de) * | 2013-11-07 | 2015-05-15 | Tecan Trading Ag | Inkubationskassette. |
| CH709307A1 (de) * | 2014-02-26 | 2015-08-28 | Tecan Trading Ag | Transportwerkzeug zum Transportieren eines Laborartikels. |
| JP6842242B2 (ja) * | 2016-03-22 | 2021-03-17 | 株式会社アイカムス・ラボ | 分注システム |
| US11054408B2 (en) * | 2016-05-06 | 2021-07-06 | StemoniX Inc. | Projected capacitive multi electrode eukaryotic cell array |
| WO2017223401A1 (en) * | 2016-06-24 | 2017-12-28 | Kobra Biosolutions, Llc | Verification pipette and vision apparatus |
-
2017
- 2017-05-15 EP EP17171137.7A patent/EP3403725A1/de not_active Withdrawn
-
2018
- 2018-05-14 JP JP2019562333A patent/JP7121754B2/ja active Active
- 2018-05-14 WO PCT/EP2018/062343 patent/WO2018210728A1/de not_active Ceased
- 2018-05-14 US US16/614,336 patent/US12115528B2/en active Active
- 2018-05-14 EP EP18724536.0A patent/EP3624945B1/de active Active
- 2018-05-14 CN CN201880031082.2A patent/CN110621408B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018210728A1 (de) | 2018-11-22 |
| CN110621408A (zh) | 2019-12-27 |
| US12115528B2 (en) | 2024-10-15 |
| CN110621408B (zh) | 2022-06-17 |
| EP3403725A1 (de) | 2018-11-21 |
| JP2020520302A (ja) | 2020-07-09 |
| JP7121754B2 (ja) | 2022-08-18 |
| EP3624945B1 (de) | 2022-04-27 |
| US20200147602A1 (en) | 2020-05-14 |
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