EP0417108A1 - Dispositif de nettoyage pour cuvettes - Google Patents

Dispositif de nettoyage pour cuvettes

Info

Publication number
EP0417108A1
EP0417108A1 EP89904050A EP89904050A EP0417108A1 EP 0417108 A1 EP0417108 A1 EP 0417108A1 EP 89904050 A EP89904050 A EP 89904050A EP 89904050 A EP89904050 A EP 89904050A EP 0417108 A1 EP0417108 A1 EP 0417108A1
Authority
EP
European Patent Office
Prior art keywords
cleaning
liquid
cleaning device
cuvettes
cuvette
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.)
Withdrawn
Application number
EP89904050A
Other languages
German (de)
English (en)
Inventor
Peter Rubenzer
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.)
Prolic AG
Original Assignee
Prolic AG
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 Prolic AG filed Critical Prolic AG
Publication of EP0417108A1 publication Critical patent/EP0417108A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L13/00—Cleaning or rinsing apparatus
    • B01L13/02—Cleaning or rinsing apparatus for receptacle or instruments
    • 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 cleaning device for cuvettes, in particular for cleaning microtiter plates with filling tubes connected to a pump and to a liquid container for supplying a
  • the anti-human globulin test (Goombs test) is used to detect so-called irregular antibodies.
  • a certain amount of red blood cells is placed in the well of a filter plate.
  • the cells After a centrifugation step, the cells are carefully washed several times to remove all serum globulins. Then a so-called Coombs serum is added, which reacts with the cells.
  • the actual measurement is carried out in a photometer.
  • washing the titer plates is an essential component of the method of examining blood samples.
  • the cell accumulation would be destroyed or washed out of the cuvette during the washing process. It is therefore an object of the invention to provide a cleaning device and a method which make it possible to wash out cuvettes and to leave a cell cluster present therein largely unharmed.
  • the cell cluster should also be washed.
  • the cleaning device according to the invention is characterized in that the cleaning liquid is added dropwise to the cuvettes by means of the filling tubes and that the depth of immersion of the pipettes in the cuvettes can be regulated.
  • the inventive method provides that a
  • Cuvette is dispensed and that this cleaning liquid is sucked off with a pipette, which is inserted deeper into the cuvette as the liquid level drops.
  • the filling tubes are advantageously aligned obliquely to the walls of the cuvette and abut against them. This prevents a drop from falling directly on the cell cluster.
  • the distance is chosen so that the drops flow away continuously on the preferably conical cell wall.
  • An embodiment of the invention provides that the filling tubes have a passage with a cross-sectional expansion shortly before the outlet opening. The formation of drops is promoted by the cross-sectional expansion.
  • Another embodiment of the device according to the invention provides that the supply line for the cleaning liquid has a passage with a variable cross-section and that a return line leading to the liquid container is connected to the supply line between this passage and the pump.
  • FIG. 1 and 1a schematically show the device according to the invention
  • FIG. 2 shows a vertical section through a cuvette with cell accumulation therein
  • FIG. 3 shows a preferred form of the cuvette
  • FIG. 4 schematically shows the suction of the liquid from the cuvette .
  • Fig. 1 only a filling tube and a cuvette for suction are shown.
  • the cleaning device according to the invention will advantageously each be provided with a row of pipettes and filling tubes, the number of filling tubes and pipettes corresponding to the number of cuvettes in a row of a titer plate.
  • the pipette 1 is first used to aspirate the residual liquid and in a further operation or in further operations the aspiration of the rinsing liquid.
  • the pipette is only lowered to just below the liquid surface and, as shown in FIG. 4, moves downward with the falling liquid level during suction.
  • the cell cluster 2 is essentially spared damage during suction.
  • Suction depth can be set on a scale 6.
  • the aspirated liquid is fed via a line 7 to a vacuum vessel 8 which is connected to a vacuum pump 9.
  • Filling tube 10 held at an angle to the wall 11 of each cuvette 12. To fill the cuvettes 12 with filling liquid, the filling tube 10 is lowered or the titer plate 13 is raised, so that the filling tube 10 is brought closer to the side of the wall 11 of a cuvette (see FIG. 3). Rinsing liquid is supplied from a vessel 15 to the filling pipe 10 via a line 16 via a piston pump 14.
  • the amount of rinsing liquid that the filling tube 10 effectively reaches is determined by a control device 17, for example a squeeze device.
  • a return line 19 is connected to the line 16 at a branch 18 and leads to the container 15.
  • the return line 19 is provided with a pressure relief valve 20 which opens only during the pumping phase.
  • the filling tube 10 is provided with a Teflon tube 21.
  • the Teflon tube 21 results in an enlarged cross-section at 22, which promotes the formation of drops.
  • the rinsing liquid is fed into a cuvette 12 or aspirated at a rate of 25-450 ul per second.
  • the cleaning device according to the invention and the method according to the invention are in no way limited to the cleaning of titer plates. This is only a preferred area of application.
  • the device according to the invention and the method according to the invention can be used wherever it is necessary to carry out washing without disturbing the cell accumulations or the sediments contained therein.

Landscapes

  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Devices For Use In Laboratory Experiments (AREA)

Abstract

Dispositif pour nettoyer des cuvettes (12) qui contiennent une accumulation de cellules, et dispositif correspondant. On introduit goutte à goutte le liquide de nettoyage dans les cuvettes (12) au moyen de tuyaux de remplissage (10). On peut ajuster la profondeur à laquelle on plonge les pipettes (1) dans les cuvettes (12), de manière à pouvoir les y plonger plus profondément lorsque le niveau du liquide baisse.
EP89904050A 1987-11-17 1989-04-03 Dispositif de nettoyage pour cuvettes Withdrawn EP0417108A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT3034/87A AT391097B (de) 1987-11-17 1987-11-17 Reinigungsvorrichtung fuer kuevetten
PCT/EP1989/000358 WO1990011831A1 (fr) 1987-11-17 1989-04-03 Dispositif de nettoyage pour cuvettes

Publications (1)

Publication Number Publication Date
EP0417108A1 true EP0417108A1 (fr) 1991-03-20

Family

ID=42312644

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89904050A Withdrawn EP0417108A1 (fr) 1987-11-17 1989-04-03 Dispositif de nettoyage pour cuvettes

Country Status (5)

Country Link
US (1) US5186760A (fr)
EP (1) EP0417108A1 (fr)
JP (1) JPH04502725A (fr)
AT (1) AT391097B (fr)
WO (1) WO1990011831A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI904639A7 (fi) * 1990-09-20 1992-03-21 Biohit Oy Menetelmä ja laite nesteen poistamiseksi kyvetistä
DE4031500A1 (de) * 1990-10-05 1992-04-09 Hoechst Ag Verfahren zum absaugen und trocknen der kavitaeten von beschichteten mikrotiterplatten
CA2384535C (fr) * 1991-03-04 2006-08-15 Bayer Corporation Analyseur automatise
US5419352A (en) * 1993-04-19 1995-05-30 Johnson; Carl W. Cleaning system and method
US5609171A (en) * 1996-02-13 1997-03-11 Kuo; Fu-Chin Lipstick molding mold cleaning apparatus
ATE446141T1 (de) * 1997-11-14 2009-11-15 Gen Probe Inc Arbeitsgerät zur analyse
US5951783A (en) * 1998-05-15 1999-09-14 Bio-Tek Holdings, Inc. Universal washing apparatus for microtiter plate and the like
US7516749B2 (en) * 2003-04-08 2009-04-14 Neogen, Llc Methods of and apparatus for washing high-density microplates
DE102010049037B4 (de) 2010-10-21 2020-11-19 Stratec Biomedical Ag Vorrichtung und Verfahren zur Erfassung der Füllstandshöhe einer Flüssigkeit zur Überwachung eines Dispense/Aspirate-Prozesses in Reaktionsgefäßen
CH704397A2 (de) 2011-01-28 2012-07-31 Tecan Trading Ag Verfahren zum Erfassen der Befüllbarkeit eines Abfallbehälters von Mikroplatten-Waschgeräten.
CN103185805A (zh) * 2011-12-28 2013-07-03 上海丰汇医学科技有限公司 全自动生化分析仪器的比色杯冲洗系统
US10961997B2 (en) 2017-03-03 2021-03-30 Biotek Instruments, Inc 3D cell washer
BG67391B1 (bg) 2018-12-12 2021-11-15 "Бултех 2000" Оод Метод за промиване на работна система в анализатор на течни храни
LU103063B1 (en) * 2023-01-23 2024-07-23 Stratec Se Method and device for purifying fluids in a container

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463397A (en) * 1967-07-03 1969-08-26 Int Harvester Co Fluid spraying system
GB1285172A (en) * 1968-08-20 1972-08-09 Vickers Ltd Improvements in or relating to mechanism for removing moisture from containers of regular cross-section and closed at one end, such as test tubes, and to apparatus, incorporating such mechanism, for cleaning such containers
CH546603A (de) * 1972-06-14 1974-03-15 Greiner Electronic Ag Verfahren zur reinigung der innen- und/oder aussenseite eines gefaesses und einrichtung zur durchfuehrung des verfahrens.
GB1470515A (en) * 1973-03-30 1977-04-14 Flow Labor Ltd Micro pipetting apparatus
US3849830A (en) * 1973-09-18 1974-11-26 W Wagner Test tube washer
US3916924A (en) * 1973-12-28 1975-11-04 Gowan Francis E Mc Apparatus for emptying and rinsing containers
US3949771A (en) * 1974-07-10 1976-04-13 Abbott Laboratories Combined washer and aspirator
US3897002A (en) * 1974-08-14 1975-07-29 Baxter Laboratories Inc Liquid wash injector
US4106155A (en) * 1976-10-06 1978-08-15 Cortex Research Corporation Apparatus for washing contaminated laboratory containers
JPS5421603A (en) * 1977-07-19 1979-02-19 Pilot Pen Co Ltd Method of extracting even quantity of liquid by trickling
US4341568A (en) * 1980-06-27 1982-07-27 Beckman Instruments, Inc. Method and apparatus for washing objects
AT375841B (de) * 1981-08-31 1984-09-10 Prolic Ag Wasch- bzw. spuelvorrichtung fuer titerplatten od.dgl.
JPS6036676A (ja) * 1983-12-23 1985-02-25 Hitachi Ltd 板状物処理装置
US4681742A (en) * 1984-10-01 1987-07-21 Cetus Corporation Assay tray
US4586546A (en) * 1984-10-23 1986-05-06 Cetus Corporation Liquid handling device and method
US4675053A (en) * 1984-12-26 1987-06-23 Mccarty Steven Record cleaning apparatus and method
US4754771A (en) * 1985-07-17 1988-07-05 Hybritech Incorporated Apparatus for washing beads
US4685480A (en) * 1985-08-30 1987-08-11 Abbott Laboratories Combined washer and aspirator
US4783877A (en) * 1986-01-06 1988-11-15 Inti Corp. Hand-held assay washer
DE3800379A1 (de) * 1988-01-08 1989-07-20 Boehringer Mannheim Gmbh Vorrichtung zum abwaschen der innenflaeche eines reaktionsgefaesses und/oder der aussenflaeche eines reagenzkugelkoerpers
JPH05329674A (ja) * 1992-05-28 1993-12-14 Kawasaki Heavy Ind Ltd 光軸調整方法およびそれに用いる光軸調整装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9011831A1 *

Also Published As

Publication number Publication date
US5186760A (en) 1993-02-16
WO1990011831A1 (fr) 1990-10-18
ATA303487A (de) 1990-02-15
AT391097B (de) 1990-08-10
JPH04502725A (ja) 1992-05-21

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