EP2732877A1 - Pipette à pistons élévateurs dotés d'une unité de refoulement interchangeable - Google Patents

Pipette à pistons élévateurs dotés d'une unité de refoulement interchangeable Download PDF

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Publication number
EP2732877A1
EP2732877A1 EP13005269.9A EP13005269A EP2732877A1 EP 2732877 A1 EP2732877 A1 EP 2732877A1 EP 13005269 A EP13005269 A EP 13005269A EP 2732877 A1 EP2732877 A1 EP 2732877A1
Authority
EP
European Patent Office
Prior art keywords
unit
piston
drive unit
magnetic
drive
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
EP13005269.9A
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German (de)
English (en)
Other versions
EP2732877B1 (fr
Inventor
Steffen Gehrig
Günter Hochholzer
Burkard Schaub
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
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Brand GmbH and Co KG
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Publication date
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Publication of EP2732877A1 publication Critical patent/EP2732877A1/fr
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Publication of EP2732877B1 publication Critical patent/EP2732877B1/fr
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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
    • 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
    • B01L3/0275—Interchangeable or disposable dispensing tips
    • 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
    • B01L2200/02—Adapting objects or devices to another
    • B01L2200/028—Modular arrangements

Definitions

  • the invention relates to a piston stroke pipette with a drive unit and a displacer unit mounted on the drive unit with the features of the preamble of claim 1.
  • Such reciprocating pipettes are used in practice for transferring liquid using pipette tips.
  • Such Kolbenhubpipetten have as so-called multi-channel pipettes eight or twelve piston-cylinder units and require correspondingly high actuation forces. The same occurs with single-channel large-volume pipettes.
  • the detachable mechanical connections or coupling devices of the pipettes transmit these forces, so that their magnetic force must be high.
  • the magnetic force can be overcome manually only with difficulty. The separation is jerky, is uncomfortable and may lead to injury or damage.
  • injuries can also occur between the two components.
  • Another Kolbenhubpipette is from the WO-A-02/29419 with a detachable by means of a magnetic coupling device dosing known.
  • This device has a Cartesian axis system for moving a dosing head.
  • One or more Hahlnadeln can be added to the liquid and discharged, are arranged on the dosing.
  • the coupling device is located between the dosing head and a holding device arranged on the axle system.
  • the dosing head and the holding device have a permanent magnet.
  • To release the coupling device the holding device to an electromagnet, which requires its own power supply.
  • an electromagnet increases, and it even requires several, the weight of Kolbenhubpipette considerably.
  • the invention is based on the problem of designing the known Kolbenhubpipette with a designed as a magnetic connection releasable mechanical connection between the drive unit and the displacer unit and further that it is ergonomically operable and effective to handle.
  • the invention is based on the idea of overcoming or adequately mitigating the magnetic force of at least the detachable mechanical connection designed as a magnetic connection between the receiving section of the drive unit and the fastening section of the displacer unit with an additional mechanical means.
  • the operator can thus easily and safely remove the displacer unit from the drive unit.
  • the displacer unit can also be gently and in a controlled manner coupled to the drive unit in the opposite direction by means of the mechanical means for separating the magnetic connection.
  • the magnetic connection of the piston stroke pipette according to the invention is designed more practical than in the prior art.
  • the operator of the piston stroke pipette is safe to handle when separating the drive unit and the displacer unit. This can be done without much manual effort. A risk of injury due to the jerky release of the magnetic connection is excluded.
  • the assembly of the drive unit and the displacer unit is easily and safely possible.
  • the mechanical means for separating the magnetic connection between the receiving portion and the attachment portion may be basically actuated by a motor actuator. An operator then actuates only one trigger element, for example a button, and the actuator drives the mechanical means for disconnecting the magnetic connection and disconnects this magnetic connection.
  • the mechanical means for separating the magnetic connection is a manually, that is manually operable means. This makes the construction of the piston stroke pipette simple and inexpensive.
  • Magneticly particularly robust and expedient is a construction in which the magnetic connection is simply separable by pushing away the displacer unit from the drive unit or vice versa.
  • the magnetic connection can also be separated only by itself so that the components of the magnetic connection are pressed apart and thereby the holding force of the magnetic connection is weakened so that the displacer unit can then be easily removed by the drive unit.
  • the releasable mechanical connection between the actuating drive and the piston drive need not be designed as a magnetic connection. In the prior art, it is designed as a magnetic connection. But it can also be designed as a latching connection o. The like. In the case of a design as a magnetic connection, it is particularly preferable for it to be separable likewise by actuation of the manually operable means.
  • Fig. 1 shows a Kolbenhubpipette 1 for transferring liquid with a drive unit 2, a displacer unit 3 and a coupling device connecting both units 4.
  • a plurality of shafts 5 are arranged for attaching pipette tips, not shown.
  • the aspiration and ejection of the liquid takes place via pistons 9 'and cylinders 9 "located in the displacer unit 3, which change the volume of air in the pipette tips and above Fig. 3 one sees this by way of example in the left-opened section of the displacer unit 3.
  • Fig. 1 is a multi-channel piston stroke pipette 1 shown with multiple shafts 5, however, the teaching can also be applied to a piston stroke pipette 1 with a single-channel displacer unit 3. Likewise, the teaching can be applied to direct displacement. So it is any form of Kolbenhubpipetten suitable according to DIN EN ISO 8655-2.
  • the Fig. 2 shows the drive unit 2, partially the displacer unit 3 and the coupling device formed therebetween 4.
  • drive unit 2 In the enclosed by a housing 6 drive unit 2 is a Hubaktor 7 with an actuating drive 8, which drives a piston drive 9 in the displacer unit 3 in the direction of a common axis 10 ,
  • the Hubaktor 7 shown is a positioning drive with electric motor and battery. Other motion transmissions, drives or power sources are possible.
  • all necessary operating, display and controls for operation and adjustment are normally arranged.
  • the piston drive 9 is in turn with the in Fig. 2 not shown piston (but see Fig. 3 , Piston 9 ') operatively connected.
  • a first mechanical connection 11 is detachable. In the illustrated and preferred embodiment, it is designed as a magnetic connection 11. However, this first mechanical connection can also be designed as a purely mechanical connection, ie frictional and / or positive (latching connection). It is important that this mechanical connection 11 securely couples the piston drive 9 with the actuating drive 8 when the displacer unit 3 is coupled to the drive unit 2, so that the movement of the actuation drive 8 is reliably and precisely transmitted to the piston drive 9.
  • the first mechanical connection 11 must also be detachable, because when separating the displacer unit 3 from the drive unit 2, the piston drive 9 has to be decoupled from the actuation drive 8.
  • the embodiment of the first mechanical connection shown here as a magnetic connection 11 consists of magnetic means, namely a permanent magnet 12 on the actuating drive 8 and a soft iron core 13 on the piston drive 9.
  • the magnetic connection 11 shown can also be realized by two permanent magnets or possibly by an electrically disconnectable magnet.
  • This drive movement transmitting connection 11 is sufficiently dimensioned, but still separable at normal excessive movement of force introduction. The separability can be made possible depending on the type of connection by loosening and / or removing the or further necessary components.
  • the upper end of the displacer unit 3 has a mounting portion 14, 17 with a guide sleeve 14 which is coaxially inserted to the axis 10 in a receiving portion 15 of the drive unit 2.
  • the actuating drive 8 Inside the guide sleeve 14, the actuating drive 8, the piston drive 9 and the first mechanical connection 11 are here in the form of the magnetic connection 11.
  • a second mechanical connection 16 of the coupling device 4 in the form of a magnetic connection 16 is comprised between the receiving section 15 of the drive unit 2 and the actuating section 14 of the displacer unit 3, that is to say the guide sleeve 14.
  • the magnetic connection 16 consists of magnetic means, namely a plurality of individual permanent magnets 16 ', which are fixed in the housing 6, and a disc 17 made of soft iron or other magnetic material, which is fixed to the guide sleeve 14.
  • the magnetic connection 16 is dimensioned so that the thrust generated by the actuator 8 under any circumstances triggers an unwanted separation during the liquid ejection.
  • the pipetted dispensed volume must always be correct.
  • the holding force of the magnetic connection 16 is correspondingly high. In the preferred embodiment shown and in FIG Fig. 4 it can therefore be seen that three permanent magnets 16 'are provided.
  • Fig. 2 and the step-by-step illustrations of Fig. 2a to 2f now show a mechanical, manually operable means 18 which is provided for separating the magnetic connection 16 between the receiving portion 15 and the mounting portion 14.
  • the magnetic connection 16 is separable.
  • the displacer unit 3 can be released from the drive unit 2 with comparatively little effort and in any case in a controlled manner.
  • this is either completely ineffective or weakened so far in their holding force in any case, that then the displacer unit 3 with little effort and controlled by the drive unit 2 can be removed.
  • the magnetic connection 16 by pushing away the displacer unit 3 of the drive unit 2 separable.
  • the separating movement is an axial movement along the common longitudinal axis 10.
  • the first releasable mechanical connection 11 between the actuating drive 8 and the piston drive 9 is designed as a magnetic connection 11. This can also be separated by actuating the manually operable means 18 for separating the magnetic connection 16. In detail, this will be explained below.
  • the manually operable means 18 for separating a lever 19 which is mounted with a pivot point 20 on the drive unit 2 and acts on manual operation on the displacer unit 3, thereby separating the magnetic connection 16.
  • Fig. 8 another construction is shown, in which the lever 19 is mounted with a pivot point 20 on the displacer unit 3, acts on the drive unit 2 with manual actuation, thus separating the magnetic connection 16.
  • the drive unit 2 is separated from the displacer unit 3. The result, of course, has the same effect, it is just another constructive solution.
  • Fig. 2 illustrated preferred embodiment is further characterized in that the lever 19 has a manually operable button 21 which is operable in the illustrated embodiment in a direction which is transverse to the direction of the separation movement of drive unit 2 and displacer unit 3.
  • the button 21 of the mounted here on the drive unit 2 lever 19 is disposed above the pivot point 20 of the lever 19. This positioning of the probe 21 makes it possible to actuate the button 21 with the thumb and at the same time to hold the displacer unit 3 loosely with one or two fingers of the hand, so that it can not easily fall off upon release from the drive unit 2.
  • Fig. 8 shows a reverse arrangement of the lever 19.
  • the lever 19 with its button 21 is not up, but down.
  • the lever 19 is arranged on the displacer unit 3 in this embodiment.
  • such an arrangement of the lever 19 with the button 21 pointing downwards can also be expedient with regard to the handling of a lever 19 arranged on the drive unit 2.
  • Fig. 2 illustrated embodiment is further characterized in that the lever 19 for separating the magnetic connection 16 has a lever arm 22.
  • a supported on the housing 6 of the drive unit 2 return spring 23 is provided which presses the longer lever arm with the button 21 and thus the lever 19 in its rest position, in which the magnetic connection 11 is not separated. This serves a defined position of the lever 19 on the Kolbenhubpipette. 1
  • FIG. 2 illustrated embodiment also shows that here the distance of the probe 21 from the pivot point 20 of the lever 19 is substantially longer than the lever arm 22. In the illustrated and preferred embodiment, this distance is about six times as long as the lever arm 22 of the lever 19. This results in a appropriate distance reduction and power transmission.
  • the button 21 is moved over a relatively large path, but this happens with very little force.
  • the small separating lever arm 22 is moved over a comparatively short stroke, but with a high force, which is turned off on the holding force of the magnetic connection 16.
  • the stroke of the lever arm 22 during manual actuation for the purpose of separating about 0.3 mm to 2.0 mm, preferably about 1.0 mm. This applies to the embodiment shown here and so far preferred.
  • Fig. 2a to 2f show a preferred Kolbenhubpipette 1 in movement positions of different processes.
  • Fig. 2a is the typical resting, starting and dispensing position of the pipette.
  • the actuator 8 is extended to about three quarters of its maximum stroke.
  • the pipette tip, not shown, is immersed in the liquid.
  • the stroke A is limited in a manual Kolbenhubpipette1 by stops not shown or defined in an electromotive Kolbenhubpipette1 example, by the preselected revolutions of the drive.
  • the maximum stroke A shows Fig. 2b ,
  • Fig. 2a moves, which can be limited as well.
  • the piston can continue for a short time, as in Fig. 2c shown to be moved (overtravel B).
  • displacer unit 3 is to be exchanged or another, for example one with a larger piston or one with a different number of channels, is used, then this is possible because of the coupling device 4.
  • the actuating drive 8 and the piston drive 9 are connected by the first magnetic connection 11 and are, as Fig. 2d shows, separated.
  • the actuating drive 8 is moved beyond the maximum stroke A of the piston drive 9 and thereby the permanent magnet 12 is released from the soft iron core 13. This can be seen in the transition from FIG. 5c to FIG. 5d.
  • the piston drive 9 is held in its upward movement by a stop.
  • the actuator 8 is driven by the Hubaktors 7 a little further up.
  • the permanent magnet 12 separates from the soft iron core 13.
  • the first mechanical connection in the form of the magnetic connection 11 is disconnected. From this description it can be seen that in this case the mechanical means 18 for separating for the first mechanical connection 11 has no function.
  • Fig. 2e shows how the lever 19 is pressed on its button 21 against the spring force of the return spring 23 in the direction of arrow C.
  • the arm with the key 21 is significantly longer than the shorter lever arm 22. With the lever arm 22, the high holding force of the magnetic connection 16 can be easily overcome manually.
  • the short stroke of the short lever arm 22 causes a slight acceleration of the separated displacer unit 3rd
  • the stroke D is in Fig. 2e so short that with pressed button 21, the magnetic force between the magnetic means of the magnetic connection 16 is greater than the weight of the displacer unit 3.
  • this design causes only a slight acceleration of the falling displacer unit 3 when the key 21 is actuated or only a short movement of the displacer unit 3 downwardly takes place analogously to the path of the short lever arm 22.
  • the stroke D of the short lever arm 22 is about 1 mm.
  • the advantageous in handling effect is achieved here by a limited to 0.3 to 2 mm long stroke D of the short lever arm 22.
  • the removal of the displacer unit 3 with an actuator, for example by holding the displacer unit 3 in a shelf and lifting the drive unit 2.
  • the switching of detents in the locking and releasing position can be realized by means of an actuator.
  • the switching operation can be initiated.
  • Fig. 2f is the withdrawn from the drive unit 2 displacer unit 3 is shown and their joining movements are indicated by the vertical arrow E.
  • the guide sleeve 14 is pushed forward in the receiving portion 15 of the drive unit 2 until the magnetic connection 16 again couples. If necessary, the first magnetic connection 11 also comes together again or it is engaged by the extension of the actuating drive 8.
  • Fig. 2f the unactuated lever 19 is shown in its rest position assumed again by the return spring 23.
  • the short lever arm 22 lies behind the plane which defines the underside of the permanent magnets 16 '( Fig. 2 ).
  • the re-attached displacer unit 3 with its disk 17 can again produce the magnetic connection 16 from the lever 19 without being influenced by the permanent magnets 16 '.
  • the lever 19 should be as in FIG Fig. 2e be shown shown.
  • the guide sleeve 14 is inserted until the disc 17 rests against the short lever arm 22 and the magnetic force begins to act.
  • the further magnetic connection 16 is gently and manually controlled coupled.
  • the magnetic connection 11 can be manually separated downward in the direction of the arrow E after the release of the magnetic connection 16.
  • the magnetic connection 11 can also be separated simultaneously with the magnetic connection 16 with the mechanical means 18 provided according to the invention.
  • the ratio of the arm lengths of the lever 19 allows a manual light, ergonomic operation.
  • the separation process is carried out in a controlled manner with one hand, the thumb presses the button 21 and keep other fingers the displacer unit 3 on the disc 17 against falling.
  • Fig. 5a and 5b show a first alternative in the construction of the coupling device 4.
  • the mechanical, manually operable means 18 for separating the magnetic connection 16 on the displacer unit 3 comprises an axially profiled cam disc 24 on a rotary wheel 21 'and on the drive unit 2 one to the cam disc 24 congruent cam guide 25 on.
  • the magnetic connection 16 of the permanent magnet 16' and the disc 17 is made of soft iron separable.
  • the rotary wheel 21 'with the cam disk 24 is rotatably mounted on the displacer unit 3. To separate the cam disk 24 is rotated about the longitudinal axis 10.
  • the cam disk 24 has in the illustrated embodiment, a plurality, preferably three, axially projecting cams. Congruently profiled is provided on the drive unit 2 cam guide 25. In the comparison of Fig. 5a and Fig. 5b can be seen that by rotating the displacer unit 3 relative to the drive unit 2, the cam disc 24 is rotated relative to the cam guide 25 and thus the separation process takes place.
  • the drive unit 2 is rotationally rigidly connected to the displacer unit 3 with the magnetic connection 16 closed, then it can also be provided that the cam disc 24 is rotatably mounted on the displacer unit 3 itself. Then the Verdfiterussi 3 remains when disconnected from the drive unit 2 and only the cam plate 24 is rotated relative to the displacer unit 3 and with respect to the cam guide 25 on the drive unit 2.
  • cam disc 24 and the cam guide 25 can also be chosen vice versa with respect to the drive unit 2 and the displacer unit 3.
  • the displacer unit 3 By rotating the cam plate 24 relative to the cam guide 25, the displacer unit 3 is axially displaced by the drive unit 2 with a stroke similar to the embodiment with the lever arm 22 and the magnetic connection 16 (possibly together with it the magnetic connection 11) is separated.
  • the magnetic means of the magnetic connection 16 as such or the displacer unit 3 and the drive unit 2 are rotatable relative to each other about the longitudinal axis 10 with the magnetic connection 16 closed.
  • the drive unit 2 and the displacer unit 3 are rotatable relative to each other about the longitudinal axis 10 as the double arrow 26 in Fig. 6b makes it clear.
  • the magnetic means 16 ', 17 of the magnetic connection 16 are congruent with each other and are thus fully effective.
  • the in Fig. 6b cut position shown cut only the magnetic means 16 ' the means 17 are hidden below.
  • the magnetic means 17 (shown in dashed lines) is offset from the means 16 '. They are therefore less effective or ineffective. This is the position at which the magnetic connection 16 is low Force can be separated.
  • Fig. 6b is the second rotational position shown in dashed lines.
  • Fig. 6b is structurally provided that the guide sleeve 14 adjacent to an outer ring 24 'at least one stop 14' has.
  • Fig. 6b example shown are three stops 14 'formed on the guide sleeve 14 radially. They are in operative connection with the magnetic means 16 'of the drive unit 2.
  • the stops 14 ' are hinged counterclockwise. From there, the rotational movement in the opposite direction, ie in a clockwise direction, bring the stops 14 'in the dashed position.
  • the magnetic means 17 on the rotated displacer unit 3 are not congruent with the magnetic means 16 'of the drive unit 2, are magnetically ineffective.
  • the magnetic means 16 'intersect; 17 only slightly, with their holding force is so low that the drive unit 2 and the displacer unit 3 can be easily separated manually and without much effort.
  • the magnetic forces in the second rotational position are sufficient to be even higher than the weight of the displacer unit 3, so that the displacer unit 3 does not simply fall off the drive unit 2.
  • Fig. 6a One recognizes in Fig. 6a in that the magnetic means 16 ', 17 are equidistant from the longitudinal axis 10. Furthermore one recognizes in Fig. 6b in that the magnetic means 16 'at the receiving portion 15 of the drive unit 2 are at the same distance relative to each other, namely at an angle of 120 ° with respect to the longitudinal axis 10.
  • a holder 27 for the magnetic means 17 is provided on the displacer unit 3 which is rotatable relative to the magnetic means 16 'on the drive unit 2 and to the displacer unit 3.
  • Fig. 7a is shown how to the holder 27 rotatably mounted on the guide sleeve 14, but is connected to it immovable axially.
  • the magnetic means 16 ', 17 of drive unit 2 and displacer unit 3 are arranged congruently and effectively or not congruent and ineffective, as described above.
  • the drive unit 2 and the displacer unit 3 are rotationally rigidly connected, for which longitudinal congruent profilings 6 'are arranged on the receiving section 15 of the housing 6 and 14 "on the guide sleeve 14. These allow a connection of the drive unit 2 and the displacer unit 3 in at least a position Fig. 7b Only four positions offset by 90 ° are possible, but a higher number of positions is even more practicable.
  • the rotational movement 26 of the holder 27 with the magnetic means 17 are limited by said abutment surfaces on the stops 14 '.
  • the clockwise rotation 26 displaces the position of the magnetic means 17 away from the means 16 'in the drive unit 2 and the magnetic connection 16 becomes inoperative.
  • a holding device for the displacer unit 3 is provided.
  • a radially projecting collar 30 is integrally formed on the lateral surface of the guide sleeve 14.
  • the catch 31 protrudes so far in the direction of the axis 10 that they in the illustrated arrangement below the covenant 30 and in the range of movement in the direction of the axis 10 to lie comes.
  • Fig. 4 the horizontal sectional view at the level of the catch 31, two opposing notches 31 are shown.
  • the holding device 30, 31 causes the displacer unit 3 even after loosening the magnetic connection 16 (and the magnetic connection 11) still loosely attached to the drive unit 2, only mechanically held by the detents 31 on the collar 30. These can easily yield when force application so that the displacer unit 3 can be finally separated from the drive unit 2 with little effort. This results in an additional mechanical safeguard, which prevents accidental dropping of the displacer unit 3 by the drive unit 2.
  • the holding device 30, 31 can be solved by downward pulling on the displacer unit 3.
  • a special construction for example by means of a manually operable button or by means of any kind of actuator.

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  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
EP13005269.9A 2012-11-19 2013-11-08 Pipette à pistons élévateurs dotés d'une unité de refoulement interchangeable Active EP2732877B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202012011043 2012-11-19

Publications (2)

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EP2732877A1 true EP2732877A1 (fr) 2014-05-21
EP2732877B1 EP2732877B1 (fr) 2019-04-03

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US (1) US9364827B2 (fr)
EP (1) EP2732877B1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2022258760A1 (fr) * 2021-06-11 2022-12-15 Xyall B.V. Appareil comprenant une interface d'accouplement amovible d'un outil de dissection
EP4349470A1 (fr) * 2022-10-06 2024-04-10 Sartorius Stedim Biotech GmbH Dispositif de retenue pour un récipient, comprenant un entraînement magnétique pour un arbre agitateur séparé

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USD772426S1 (en) * 2014-01-13 2016-11-22 Gilson, Inc. Pipette system cartridge
DE102016121815A1 (de) * 2016-11-14 2018-05-17 Ika-Werke Gmbh & Co. Kg Handdosiervorrichtung
USD924429S1 (en) 2019-02-21 2021-07-06 Brand Gmbh + Co Kg Handheld pipette
USD1031074S1 (en) 2022-04-06 2024-06-11 Brand Gmbh + Co Kg Displacement device of a multi-channel pipette

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EP0181957A1 (fr) * 1984-11-20 1986-05-28 HTL High-Tech Lab Herstellung und Vertrieb medizinisch technischer Erzeugnisse GmbH Pipette à dose réglable
DE19826065A1 (de) 1998-06-12 1999-12-16 Eppendorf Geraetebau Netheler Pipettiervorrichtung
WO2002029419A2 (fr) 2000-10-06 2002-04-11 Chemspeed Ltd. Dispositif comprenant un porte-outils et un outil a fixation amovible
US20090120967A1 (en) * 2007-10-16 2009-05-14 Ivek Corporation Coupling system for use with fluid displacement apparatus
US20090117009A1 (en) * 2007-11-02 2009-05-07 Richard Cote Multi-channel electronic pipettor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022258760A1 (fr) * 2021-06-11 2022-12-15 Xyall B.V. Appareil comprenant une interface d'accouplement amovible d'un outil de dissection
EP4349470A1 (fr) * 2022-10-06 2024-04-10 Sartorius Stedim Biotech GmbH Dispositif de retenue pour un récipient, comprenant un entraînement magnétique pour un arbre agitateur séparé
WO2024074527A1 (fr) * 2022-10-06 2024-04-11 Sartorius Stedim Biotech Gmbh Dispositif de retenue pour un récipient pourvu d'un entraînement magnétique pour un arbre d'agitateur séparé

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EP2732877B1 (fr) 2019-04-03
US20140137672A1 (en) 2014-05-22

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