EP0691158A2 - Système de pipetage - Google Patents

Système de pipetage Download PDF

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Publication number
EP0691158A2
EP0691158A2 EP95108589A EP95108589A EP0691158A2 EP 0691158 A2 EP0691158 A2 EP 0691158A2 EP 95108589 A EP95108589 A EP 95108589A EP 95108589 A EP95108589 A EP 95108589A EP 0691158 A2 EP0691158 A2 EP 0691158A2
Authority
EP
European Patent Office
Prior art keywords
piston
pipetting
pipetting system
light
coding
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
Application number
EP95108589A
Other languages
German (de)
English (en)
Other versions
EP0691158B1 (fr
EP0691158A3 (fr
Inventor
Peter Mahler
Hubert Dr. Kunze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brand GmbH and Co KG
Original Assignee
Brand GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Brand GmbH and Co KG filed Critical Brand GmbH and Co KG
Priority to DE29522141U priority Critical patent/DE29522141U1/de
Publication of EP0691158A2 publication Critical patent/EP0691158A2/fr
Publication of EP0691158A3 publication Critical patent/EP0691158A3/fr
Application granted granted Critical
Publication of EP0691158B1 publication Critical patent/EP0691158B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—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
    • B01L3/0234—Repeating pipettes, i.e. for dispensing multiple doses from a single charge

Definitions

  • the invention relates to a pipetting system with a pipetting device, and preferably a hand-held pipetting device, in particular a repeating pipetting device for repeatedly dispensing presettable, preferably identical, liquid volumes, with an exchangeable part which can be detachably attached to the pipetting device and which holds the liquid to be pipetted, namely a piston-cylinder unit, whose Pistons and / or cylinders are driven relative to one another in a pipetting movement for the purpose of suctioning and expelling liquid to be pipetted, the actuating force for the pipetting movement preferably being applied by hand and in particular the pipetting movement being carried out directly by hand, and with a device for automatically identifying the type of one exchange part attached to the pipetting device.
  • Such a pipetting system is known from US-PS 45 63 907, which generally develops the concept of an automatic identification of the filling volume of a piston-cylinder unit attached to a pipetting device. Specifically, it is proposed to use the maximum extension length of the piston from the cylinder as a measure of the filling volume. This solution is out of the question if the maximum extension length of the piston is the same for different types of piston-cylinder units. This is usually exactly the case with repeating pipetting devices.
  • the object of the invention is to provide a pipetting system of the type mentioned in the introduction, in which the type of replacement parts of very different sizes attached to the pipetting device can be identified easily and reliably with a handy device construction.
  • This object is achieved with an identification device which is designed to identify the type of an exchange part attached to the pipetting device on the basis of its piston.
  • the identification device is suitable for determining a characteristic piston dimension, e.g. B. the piston diameter, or another characteristic piston parameter, z. B. to detect the interaction between the piston and cylinder, in particular the displacement force, or a coding provided on the piston.
  • a characteristic piston dimension e.g. B. the piston diameter
  • another characteristic piston parameter, z. B. to detect the interaction between the piston and cylinder, in particular the displacement force, or a coding provided on the piston.
  • the pipetting system according to the invention includes a set of replacement parts of different types, in particular of different shapes and / or sizes, suitable for the pipetting device, with codes that may differ from type to type.
  • the exchange parts are preferably piston-cylinder units of different diameters and the same length. They are used on the same pipetting device in order to pipette different liquid volumes per piston stroke.
  • the identification device can be a device external to the device, to which a pipetting device with an exchangeable part attached is led and to the pipetting device transmits a signal identifying the replacement part. In the interest of simple handling, however, a device-internal identification device is preferred.
  • the pipetting system according to the invention has a device for entering an identification of the type of exchange part by hand. This enables working with replacement parts that are not designed for automatic identification and correction by the user in the event of incorrect identification.
  • the piston of each exchange part has a head on which a piston actuator acts.
  • the piston head is digitally coded and the coding is recorded optically.
  • the piston head is coded in that it is transparent or opaque in sections. This enables the use of a simple binary code.
  • the pipetting device has a reading unit with one or more light barriers that illuminate the piston head and distinguish between transparent and opaque. Transparency and opacity are to be understood as good permeability or poor permeability for the light of the light barriers in their specific wavelength range. Opacity and transparency can be achieved in that material or no material of the piston head lies in the light path.
  • the light barriers work with infrared light.
  • Each light barrier includes an infrared light source, an infrared photo detector and a spectral filter arranged upstream of this, which essentially only allows light to pass through from the emission band of the light source.
  • the filter serves to suppress stray light and to improve the signal-background ratio.
  • the light barriers can operate at different light wavelengths to prevent crosstalk from one light barrier to another. The same can be achieved with less equipment in terms of apparatus in that the light barriers are activated in chronological succession. The required speed of measurement is not a problem, and one type of light source and photo detector is sufficient.
  • the reading unit is in each case when attaching an exchange part to the pipetting device, for. B. briefly put into operation by a switching operation.
  • the switching process can be connected, for example, to the engagement of a closure element.
  • the reading unit is thus activated at well-defined times at which identification of replacement parts is meaningful and clearly possible.
  • Compared to permanent operation of the reading unit there is the advantage of lower energy consumption, which is particularly important for hand-held pipetting devices operated by batteries or accumulators.
  • briefly occurring undefined states need e.g. B. not be recognized and intercepted by the electronics when attaching or detaching a replacement part.
  • the reading unit is suitable for performing a self-check. This refers to the functionality of all light barriers and the fact that their light path is not incorrectly interrupted, e.g. B. by a foreign body, a movable closure element or the like.
  • the self-check is preferably initiated automatically. That can z. B. happen by a switching process shortly after loosening a replacement part from the pipetting device.
  • a switch can be attached to the replacement part receptacle of the pipetting device in such a way that it remains depressed by the cylinder of the replacement part or a flange or collar located thereon as long as the replacement part is attached to the pipetting device.
  • the switch is actuated when the replacement part is released.
  • the automatic self-check then runs in a few fractions of a second before the next replacement part is attached to the pipetting device.
  • the self-check remains completely unnoticed by the user.
  • a warning signal is only issued in the event of an error.
  • the piston actuator enters into a releasable connection with the piston head of an exchange part to be attached to the pipetting device.
  • the reading unit is suitable for detecting the coding on the piston head while it is connected to the piston actuator and the piston is fully inserted into the cylinder of the replacement part.
  • the piston head is essentially cylindrical. It has one or more circumferential radial projections on which a gripper belonging to the piston actuator acts.
  • the piston head is due to the axial position of the protrusion or protrusions and adjacent and / or intervening gaps.
  • n projections of which several may also form longer, integrally connected blocks, and n light barriers. Transparency on all light barriers is assigned to the self-check.
  • an additional light barrier is provided for the detection of foreign parts. This illuminates an exchange part attached to the pipetting device at a point where the light path is open for all replacement parts belonging to the pipetting system and the light path is closed for replacement parts of all third-party manufacturers. Incorrect identifications due to undefined geometries of foreign exchange parts are avoided.
  • the invention relates not least to the coded replacement parts in the form of piston-cylinder units for a pipetting system of the type described.
  • these are replacement parts whose piston head is binary-coded in that it is transparent or opaque in sections for the light from one or more light barriers , preferably with the omission of the binary one used for the self-check, is completely transparent.
  • the piston head is also at one point for the light from the light barrier (s) transparent, on which the replacement parts of all other manufacturers are opaque for the light.
  • the pipetting device according to the invention includes replacement parts in the form of syringes 10, which are available in seven different sizes.
  • the syringe 10 shown in FIGS. 1 and 2 is selected as an example.
  • the syringe 10 has a hollow body in the form of a circular cylinder 12 which is open at the top. At the upper edge of the cylinder 12 there is a circumferential collar 14 which projects radially outwards.
  • the cylinder 12 merges into a hollow tip 16 which is centered and axially attached to it, which is conical and tapers downward.
  • the tip 10 has a smaller diameter than the cylinder 12, so that there is a diameter step on the bottom 18 thereof.
  • the interior of the hollow tip 16 is connected to the interior of the cylinder via a central bottom opening of the cylinder 12.
  • the lower opening 20 of the hollow tip 16 serves as a suction and discharge opening for liquid to be pipetted.
  • a plunger 12 is accommodated under sealing, which plunges completely into the cylinder 12 in the drawings and is shown in contact with the bottom 18 thereof.
  • the piston 22 has a piston rod 24 with a head which, in the exemplary embodiment shown, protrudes upward from the opening of the cylinder, but may also come to rest completely or partially in the cylinder.
  • the piston forms a single-acting piston-cylinder unit with the cylinder.
  • the piston head is circular cylindrical and graduated in diameter. It has a central cylindrical shaft 26 and one or more circumferential radial projections 28 formed integrally therewith.
  • the projections 28 are delimited by radial planes 30 and outer cylinder jacket surfaces 32, which are aligned in the axial direction.
  • the shaft end 36 of the piston head protrudes at the very top, so that there is always a radial gap 38 here.
  • the pipetting device 40 has a housing with a receptacle for a syringe 10, which is accessible via a lateral insertion opening. Collar 14 and plunger head of syringe 10 fit through the insertion opening into the receptacle when plunger 22 is fully inserted into cylinder 12. The collar 14 has guidance when pushed in on both sides, inwardly converging ramps of the housing.
  • the cylinder 12 of the syringe is firmly positioned with the collar 14 in the receptacle.
  • the piston 22 can be adjusted relative to the cylinder 12 in an axial pipetting movement by means of an actuator 42 which acts on the piston head.
  • the piston actuator 42 has a gripper with two opposing jaws 44, between which the piston head fits.
  • the jaw profile is partially cylindrical and adapted to the outer diameter of the projections 28 located on the piston head.
  • the gripper is open on the insert side.
  • the jaws 44 of the gripper are deflected by the piston head entering between them and spread elastically.
  • the jaws 44 wrap around the piston head and snap onto it.
  • the piston head is on the cylinder jacket the projections 28 held non-positively between the jaws 44.
  • the projections 28 of the piston head protrude from the gripper (cf. FIG. 2).
  • the cylinder diameters differ from type to type.
  • the syringes 10 are identical in construction and in particular of the same length.
  • the respective type of syringe 10 is binary coded on the basis of the projections 28 of the piston head.
  • a grid dimension of the coding is the smallest axial length of a projection 28.
  • the piston head is coded over six times this length with projections 28 and gaps 34 next to it and in between.
  • the grid position 1 at the very top of the piston head is assigned to the protruding shaft end 36, so that there is always a gap 38 here.
  • each light barrier 46-52 has an infrared photodiode 54 as the light source on one side and an opposite infrared photodetector 56 on the other side of the piston head.
  • the light barriers 46-52 illuminate the piston head when the piston head is in the gripper of the piston actuator 42 with the piston 22 fully retracted into the cylinder 12.
  • the beam path of the light barriers 46 - 52 runs parallel in central radial planes which are axially offset from one another.
  • a projection 28 of the piston head is hit on its periphery protruding from the gripper by the infrared light in a secant manner and the beam path of the light barrier 46-52 is interrupted.
  • the light barriers 46 - 52 At the radial gaps 34, 38 formed by shaft sections 26 of smaller diameter next to or between the projections 28, the light barriers 46 - 52 have passage.
  • a first light barrier 46 in grid position 1 shines through the diameter recess 38 at the upper shaft end 36 of the piston head. This light barrier 46 is used to detect foreign syringes, which are all solid here and opaque for the infrared light. In the coding schemes according to FIGS. 4 and 5, transparency in raster position 1 corresponds to the foremost bit digitally one.
  • the three light barriers 48 - 52 used to read out the type coding illuminate the piston head at grid position 2 at the top, 4 in the middle and 6 at the bottom. These light barriers are thus spaced apart from one another by twice the grid dimension, whereas the two light barriers 46, 48 are spaced apart by a grid dimension one at the top.
  • the piston heads on the three light barriers 48-52 of the type code reading unit are either transparent (gap 34; digital one) or opaque (projection 28; digital zero).
  • the syringes 10 are, as can be seen in FIGS. 4 and 5, with the binary numbers 000, i.e. H. Projection 28 on all light barriers (see also Fig. 1 to Fig. 3) to 110, d. H. Gaps 34 on the two light barriers 48, 50 and projection 28 on the light barrier 52 are type-coded.
  • the binary number 111, i.e. H. Gap 34 on all three light barriers 48 - 52 is not assigned as a type code, since light passage on all light barriers 46 - 52 is occupied for a self-check.
  • the axial length of the projections 28 corresponds to the single, double or triple grid dimension.
  • the sum of the axial length of the projections 28 is the same for all syringes 10, namely three times the grid dimension. This results in the same frictional connection on the gripper for all syringe pistons.
  • the upper projection 28 has been enlarged in the piston head with the coding 1010, so that it takes up the grid positions 2 and 3. This increases the frictional connection to the gripper without adversely affecting the other functions, in particular the coding. Due to the same material thickness, this version is better suited for plastic injection molding.
  • the protrusion 28 which is three times the grid dimension in FIG. 4 was reduced to twice the grid dimension.
  • the projection 28 only occupies the grid positions 3 and 4. A build-up of material that could lead to undesirable sink marks during plastic injection molding is avoided. The lower grip on the gripper can be tolerated.

Landscapes

  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Pipeline Systems (AREA)
EP95108589A 1994-07-07 1995-06-06 Système de pipetage Expired - Lifetime EP0691158B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29522141U DE29522141U1 (de) 1994-07-07 1995-06-06 Pipettiersystem

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4423528 1994-07-07
DE44235283 1994-07-07
DE44235283F 1994-07-07

Publications (3)

Publication Number Publication Date
EP0691158A2 true EP0691158A2 (fr) 1996-01-10
EP0691158A3 EP0691158A3 (fr) 1997-01-08
EP0691158B1 EP0691158B1 (fr) 2001-11-07

Family

ID=6522288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108589A Expired - Lifetime EP0691158B1 (fr) 1994-07-07 1995-06-06 Système de pipetage

Country Status (5)

Country Link
EP (1) EP0691158B1 (fr)
DE (1) DE59509794D1 (fr)
ES (1) ES2163459T3 (fr)
FI (1) FI109406B (fr)
PL (2) PL179567B1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19915771C1 (de) * 1999-04-08 2001-01-04 Retec Elektronische Regeltechn System zum Aufnehmen und Abgeben von Fluidvolumina
DE19915066A1 (de) * 1999-04-01 2001-01-18 Brand Gmbh & Co Kg Verfahren und Vorrichtung zur Erkennung des Typs von austauschbaren gerätespezifischen Kolben-Zylinder-Einheiten für Pipettier- oder Dosiergeräte
DE19948818A1 (de) * 1999-10-09 2001-05-10 Retec Elektronische Regeltechn System zum Aufnehmen und Abgeben von Fluidvolumina
DE10001938A1 (de) * 2000-01-19 2001-08-02 Retec Elektronische Regeltechn System zum Aufnehmen und Abgeben von Fluidvolumina
DE10022150A1 (de) * 2000-05-08 2001-11-15 Roland Manowski Magnetkolbenmotor und Verfahren zu dessen Herstellung
WO2004052543A1 (fr) * 2002-12-11 2004-06-24 Pz Htl Spólka Akcyjna Procede de lecture de parametres de tiges de pipettes interchangeables et pipette equipee d'un systeme de lecture de tels parametres
EP1825915A3 (fr) * 2006-02-28 2008-11-26 Eppendorf Ag Système et procédé de titrage de liquides
DE102009016590A1 (de) * 2009-03-31 2010-10-07 Eppendorf Ag Dosiervorrichtung
EP2574402A1 (fr) * 2011-09-30 2013-04-03 Eppendorf Ag Seringue avec cylindre avec codage et des elements de controles
US9291529B2 (en) 2011-09-30 2016-03-22 Eppendorf Ag Syringe for use with a metering device
WO2018153986A3 (fr) * 2017-02-23 2018-10-18 Brand Gmbh + Co Kg Procédé servant à identifier le type d'une unité piston-cylindre pouvant être remplacée pour un distributeur
WO2021081532A1 (fr) * 2019-10-25 2021-04-29 Mettler-Toledo Rainin, LLC Système d'identification de seringue de pipette à déplacement positif
USD926224S1 (en) 2018-10-11 2021-07-27 Brand Gmbh + Co Kg Laboratory device display screen with graphical user interface
US11369954B2 (en) 2019-10-25 2022-06-28 Mettler-Toledo Rainin, LLC Powered positive displacement pipette assembly
US11389792B2 (en) 2019-10-25 2022-07-19 Mettler-Toledo Rainin, LLC Syringe for powered positive displacement pipette
CN114786816A (zh) * 2019-12-06 2022-07-22 埃佩多夫欧洲股份公司 移液器吸头套件和移液器套件
US11446672B2 (en) 2019-10-25 2022-09-20 Mettler-Toledo Rainin, LLC Powered positive displacement pipette syringe piston grasping mechanism
US11471878B2 (en) 2019-10-25 2022-10-18 Mettler-Toledo Rainin, LLC Powered positive displacement pipette

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3831487B1 (fr) 2019-12-06 2024-02-07 Eppendorf SE Pipette à utiliser avec une pointe de pipette et pointe de pipette à utiliser avec une pipette
US11660592B2 (en) * 2020-02-14 2023-05-30 DeNovix, Inc. Dynamic broad volumetric range pipette

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563907A (en) 1983-10-31 1986-01-14 Micromedic Systems Inc. Direct reading automatic pipette
US4988481A (en) 1989-01-30 1991-01-29 Labsystems Oy Electrical pipette
US5002737A (en) 1985-07-08 1991-03-26 Labsystems Oy Electrically operated pipette
WO1991004759A1 (fr) 1989-09-29 1991-04-18 Medex, Inc. Pompe de perfusion a introduction de code a barres dans un ordinateur
EP0576967A2 (fr) 1992-06-24 1994-01-05 Labsystems Oy Corporation Pipette motorisée

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US3757585A (en) * 1968-08-16 1973-09-11 Heller Labor Pipette apparatus
US4099548A (en) * 1976-08-25 1978-07-11 Oxford Laboratories Inc. Hand-held pipette for repetitively dispensing precise volumes of liquid
DE2914176A1 (de) * 1979-04-07 1980-10-16 Kernforschungsz Karlsruhe Einrichtung zum identifizieren eines transportbehaelters
US4489618A (en) * 1980-07-03 1984-12-25 Meyer Richard C Pipet signalling system
US4569662A (en) * 1981-10-26 1986-02-11 Dragan William B Bulk cartridge for packaging and dispensing a dental material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4563907A (en) 1983-10-31 1986-01-14 Micromedic Systems Inc. Direct reading automatic pipette
US5002737A (en) 1985-07-08 1991-03-26 Labsystems Oy Electrically operated pipette
US4988481A (en) 1989-01-30 1991-01-29 Labsystems Oy Electrical pipette
WO1991004759A1 (fr) 1989-09-29 1991-04-18 Medex, Inc. Pompe de perfusion a introduction de code a barres dans un ordinateur
EP0576967A2 (fr) 1992-06-24 1994-01-05 Labsystems Oy Corporation Pipette motorisée

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19915066A1 (de) * 1999-04-01 2001-01-18 Brand Gmbh & Co Kg Verfahren und Vorrichtung zur Erkennung des Typs von austauschbaren gerätespezifischen Kolben-Zylinder-Einheiten für Pipettier- oder Dosiergeräte
DE19915066C2 (de) * 1999-04-01 2001-09-13 Brand Gmbh & Co Kg Verfahren zur Erkennung des Typs von austauschbaren gerätespezifischen Kolben-Zylinder-Einheiten für Pipettier- oder Dosiergeräte sowie Pipettier- und Dosiersystem
US6740295B2 (en) 1999-04-01 2004-05-25 Brand Gmbh + Co Kg Method and device for detecting the type of replaceable piston-cylinder units for pipetting or dosing apparatus
DE19915771C1 (de) * 1999-04-08 2001-01-04 Retec Elektronische Regeltechn System zum Aufnehmen und Abgeben von Fluidvolumina
DE19948818C2 (de) * 1999-10-09 2002-09-05 Retec Elektronische Regeltechn System zum Aufnehmen und Abgeben von Fluidvolumina
DE19948818A1 (de) * 1999-10-09 2001-05-10 Retec Elektronische Regeltechn System zum Aufnehmen und Abgeben von Fluidvolumina
DE10001938C2 (de) * 2000-01-19 2002-08-01 Retec Elektronische Regeltechn System zum Aufnehmen und Abgeben von Fluidvolumina und Verwendung des Systems
DE10001938A1 (de) * 2000-01-19 2001-08-02 Retec Elektronische Regeltechn System zum Aufnehmen und Abgeben von Fluidvolumina
DE10022150A1 (de) * 2000-05-08 2001-11-15 Roland Manowski Magnetkolbenmotor und Verfahren zu dessen Herstellung
WO2004052543A1 (fr) * 2002-12-11 2004-06-24 Pz Htl Spólka Akcyjna Procede de lecture de parametres de tiges de pipettes interchangeables et pipette equipee d'un systeme de lecture de tels parametres
US8632735B2 (en) 2006-02-28 2014-01-21 Eppendorf Ag System and method for titrating liquids
EP1825915A3 (fr) * 2006-02-28 2008-11-26 Eppendorf Ag Système et procédé de titrage de liquides
EP2371455A3 (fr) * 2006-02-28 2012-04-25 Eppendorf AG Système et procédé destinés au titrage de liquides
DE102009016590A1 (de) * 2009-03-31 2010-10-07 Eppendorf Ag Dosiervorrichtung
JP2014514544A (ja) * 2011-09-30 2014-06-19 エッペンドルフ アクチエンゲゼルシャフト 計量装置で使用するシリンジ、計量装置で使用するいくつかのシリンジを含むシリンジ・システム、シリンジで使用する計量装置、シリンジおよび計量装置を含む計量システムおよび計量システムの操作方法
EP2574402A1 (fr) * 2011-09-30 2013-04-03 Eppendorf Ag Seringue avec cylindre avec codage et des elements de controles
US9291529B2 (en) 2011-09-30 2016-03-22 Eppendorf Ag Syringe for use with a metering device
WO2013045013A1 (fr) * 2011-09-30 2013-04-04 Eppendorf Ag Seringue comportant un cylindre de seringue pourvu d'un codage et d'éléments de contrôle
WO2018153986A3 (fr) * 2017-02-23 2018-10-18 Brand Gmbh + Co Kg Procédé servant à identifier le type d'une unité piston-cylindre pouvant être remplacée pour un distributeur
US10870107B2 (en) 2017-02-23 2020-12-22 Brand Gmbh + Co Kg Method for detecting the type of an exchangeable piston-cylinder unit for a dispenser
EP3795254A1 (fr) * 2017-02-23 2021-03-24 Brand Gmbh + Co Kg Ensemble piston-cylindre interchangeable pour un distributeur
USD926224S1 (en) 2018-10-11 2021-07-27 Brand Gmbh + Co Kg Laboratory device display screen with graphical user interface
US11369954B2 (en) 2019-10-25 2022-06-28 Mettler-Toledo Rainin, LLC Powered positive displacement pipette assembly
WO2021081532A1 (fr) * 2019-10-25 2021-04-29 Mettler-Toledo Rainin, LLC Système d'identification de seringue de pipette à déplacement positif
US11389792B2 (en) 2019-10-25 2022-07-19 Mettler-Toledo Rainin, LLC Syringe for powered positive displacement pipette
US11446672B2 (en) 2019-10-25 2022-09-20 Mettler-Toledo Rainin, LLC Powered positive displacement pipette syringe piston grasping mechanism
CN115135416A (zh) * 2019-10-25 2022-09-30 梅特勒-托利多瑞宁有限责任公司 电动外置活塞式移液器的注射器活塞抓握机构
US11471878B2 (en) 2019-10-25 2022-10-18 Mettler-Toledo Rainin, LLC Powered positive displacement pipette
US11850582B2 (en) 2019-10-25 2023-12-26 Mettler-Toledo Rainin, LLC Powered positive displacement dispensing methods
US11911767B2 (en) 2019-10-25 2024-02-27 Mettler-Toledo Rainin, LLC Positive displacement pipette syringe identification system
CN115135416B (zh) * 2019-10-25 2024-04-02 梅特勒-托利多瑞宁有限责任公司 电动外置活塞式移液器的注射器活塞抓握机构
CN114786816A (zh) * 2019-12-06 2022-07-22 埃佩多夫欧洲股份公司 移液器吸头套件和移液器套件
CN114786816B (zh) * 2019-12-06 2023-10-31 埃佩多夫欧洲股份公司 移液器吸头套件、移液器套件和移液器系统

Also Published As

Publication number Publication date
ES2163459T3 (es) 2002-02-01
FI953328A0 (fi) 1995-07-06
PL179567B1 (pl) 2000-09-29
FI109406B (fi) 2002-07-31
EP0691158B1 (fr) 2001-11-07
PL309166A1 (en) 1996-01-08
EP0691158A3 (fr) 1997-01-08
FI953328A (fi) 1996-01-08
DE59509794D1 (de) 2001-12-13
PL178640B1 (pl) 2000-05-31

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