EP0192571B1 - Probenhalter für Zentrifuge und Verfahren zu seiner Herstellung - Google Patents

Probenhalter für Zentrifuge und Verfahren zu seiner Herstellung Download PDF

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Publication number
EP0192571B1
EP0192571B1 EP86400337A EP86400337A EP0192571B1 EP 0192571 B1 EP0192571 B1 EP 0192571B1 EP 86400337 A EP86400337 A EP 86400337A EP 86400337 A EP86400337 A EP 86400337A EP 0192571 B1 EP0192571 B1 EP 0192571B1
Authority
EP
European Patent Office
Prior art keywords
plates
slide portions
support
carrier according
abutments
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.)
Expired
Application number
EP86400337A
Other languages
English (en)
French (fr)
Other versions
EP0192571A2 (de
EP0192571A3 (en
Inventor
Fernand Barbin
Albert Aretin
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.)
Jouan SA
Original Assignee
Jouan SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9316412&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0192571(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Jouan SA filed Critical Jouan SA
Priority to AT86400337T priority Critical patent/ATE41885T1/de
Publication of EP0192571A2 publication Critical patent/EP0192571A2/de
Publication of EP0192571A3 publication Critical patent/EP0192571A3/fr
Application granted granted Critical
Publication of EP0192571B1 publication Critical patent/EP0192571B1/de
Expired 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
    • B01L9/00—Supporting devices; Holding devices
    • B01L9/06—Test-tube stands; Test-tube holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
    • B04B5/0421—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes pivotably mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
    • B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
    • B04B2005/0435—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles with adapters for centrifuge tubes or bags

Definitions

  • a centrifuge rotor for the centrifugation of samples contained in test tubes.
  • This rotor comprises several arms spaced radially and forming between them intervals in which nacelles are mounted so as to be able to pivot on said arms.
  • Each of said nacelles is in the form of a cylindrical tank and receives a stack of plates of diameter substantially equal to the internal diameter of the tank, and which are pierced with holes for the introduction of test tubes.
  • Said plates can be moved in a block and held in a predetermined orientation such that their holes are respectively in alignment with each other, by means of a U-shaped holding element, the central branch of which supports the stack of plates and whose vertical arms are received in diametrically opposite notches, formed in the edge of the plates.
  • a support plate At the base of the stack of plates is a support plate on which the bottom of the test tubes rests.
  • the user can thus make a custom rack of height close to that of the tubes used, by threading on the branches of the holding element, the support plate and the desired number of plates so that the stack has the desired height. All of the plates can then be transported as a whole by means of the holding element and inserted inside the tank.
  • the present invention aims to remedy this drawback of racks of the known prior art, and for this purpose relates to a rack of the type comprising several stacked plates, pierced with holes and oriented angularly so that their respective holes are in alignment with each other. others, thus forming housings for receiving the tubes, said plates being slidably mounted on two parallel arms of a U-shaped support; said support comprises a sole of surface substantially equal to that of the plates and two slides coming from manufacture with the sole, and which are received in axial notches, formed in diametrically opposite positions on the edges of the stacked plates, said slides being provided on their inner face to the support, above the upper plate, stops intended to prevent the withdrawal of the plates or the insertion of other plates in the support.
  • the stops are formed by local deformation of said slides.
  • the support can for example be produced by molding a thermoplastic material and the stops produced by melting the material at the point where the stops are to be formed. But it goes without saying that the support can also be made of metal, the stops then being stamped.
  • the stops can also be formed by attachments on the slides.
  • the stops are constituted by grooved nails fixed on the slides and the point of which protrudes from the inner face of the latter.
  • the slides and the notches have dovetail sections of complementary shapes.
  • the plates cannot be removed from the support while trying to separate the slides from one another since the dovetail assembly is opposed to it.
  • the invention also relates to a method of producing the rack.
  • This method consists in threading on the support rails a number of plates such that the height of the plate stack is less than the height of the tubes to be centrifuged, then forming the stops on said slides.
  • a centrifuge rotor 10 is mounted rotating around an axis 12.
  • the rotor is of the star type and comprises several radial arms 14 defining between them intervals in which are arranged nacelles 16 in the form of cylindrical tank.
  • each nacelle is pivotally mounted on the arms which enclose it around pivots 18, so that when the rotor 10 is at rest, the nacelle takes the position shown in solid lines in FIG. 1, and when the rotor turns, it pivots towards the position shown in dashed lines.
  • each nacelle is inserted a rack 20 for test tubes 22 which is shown in detail in FIGS. 2 to 4.
  • the rack comprises a support 24 intended to receive a plurality of stacked plates 26.
  • the support comprises a substantially flat sole 28, of diameter equal to the inside diameter of the nacelle 16.
  • the slides can come from manufacturing with the sole 28 or be produced separately and attached to the latter by any known means, for example by welding, gluing, or screwing.
  • the sole and the slides are obtained by molding a plastic material.
  • the sole has on its upper face a series of substantially hemispherical holes 33, intended to receive the lower end of the test tubes.
  • the upper face of the sole can be covered with a plate of elastically deformable material, for example rubber.
  • the tubes have non-punctual contact with the soleplate, which makes it possible to reduce the stresses on the tubes during rotation of the rotor and consequently achieve much higher rotor rotation speeds. in case the contact is punctual.
  • the slides are flat and have a dovetail cross section which widens towards the inside of the support.
  • the slides are long enough that, when the sole 28 of the support rests on the bottom of the nacelle 16, the upper ends of the slides arrive slightly above the level of the upper edge of the nacelle. Said ends are curved outward to form portions 34 allowing the establishment and removal of said racks.
  • the plates 26 have a cylindrical side wall with a diameter equal to that of the sole. As shown in FIG. 6, they have, at two diametrically opposite points on said side wall, two axial notches 36, 38 in the form of a dovetail, of cross section complementary to that of the slides 30, 32.
  • the plates are pierced with a plurality of axial holes 40 of diameter slightly greater than the external diameter of the test tubes 22. These holes are arranged on each plate in the same way with respect to the notches 36, 38. It follows that when several plates are threaded on the slides, their respective holes come into alignment with each other, thus forming a cylindrical housing in which a test tube 22 can be inserted.
  • the number of plates stacked on the sole 28 is chosen so that the total height of the stack is less than the height of the test tubes.
  • the slides 30, 32 are provided with stops 42 intended to oppose the withdrawal of the plates upwards, without however preventing their sliding movement along the slides.
  • the stops are arranged widely above the highest plate of the stack, for example in the vicinity of the upper ends of the slides. They can be produced by any known means, for example, as in the case illustrated in FIGS. 2 to 5, by locally deforming hot the plastic material of the slides, so as to reveal the stops on the internal face of the slides.
  • the stops are constituted by grooved nails 44 fixed through the wall of the slides and whose tip protrudes from the internal face of the latter.
  • each of the latter has on its underside at least one groove 46.
  • the contents of the tubes can be observed through the bloodletting.
  • the latter also have the role of allowing better stability of tackles. It is in fact understood that it is simpler to obtain good contact of a plate on the plate situated below it when the contact surface is reduced to that of the projecting portions 48 defined on either side of the grooves.
  • the slides 30, 32, the notches 36 can have any other shape of section which opposes the withdrawal of the plates by spacing the slides.

Landscapes

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

Claims (8)

1. Träger der mehrere gestapelte Platten aufweisenden Art, die Löcher aufweiseh und winkelmäßig derart orientiert sind, daß ihre jeweiligen Löcher (40) aufeinander ausgerichtet sind, wobei so Aufnahmeplätze für Röhren (22) gebildet werden, und wobei die Platten gleitend an zwei parallelen Armen einer U-förmigen Stütze gelagert sind, wobei die Stütze (24) eine Sohle (28) mit einer Oberfläche aufweist, die im wesentlichen gleich zu der der Platten (26), sowie zwei Rutschen (30, 32), die zusammen mit der Sohle hergestellt werden und die in axiale Nuten (36, 38) aufgenommen sind, welche an diametral gegenüberliegenden Stellen auf den Schmalseiten der Platten ausgebildet sind, wobei die Rutschen auf der inneren Fläche der Stütze, oberhalb der oberen Platte, mit Anschlägen (42) versehen sind, die das Entnehmen der Platten oder das Einfügen von anderen Platten in die Stütze verhindern.
2. Träger nach Anspruch 1, dadurch gekennzeichnet, daß die Anschläge (42) genau oberhalb der oberen Platte angeordnet sind.
3. Träger nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Anschläge (42) durch örtliche Umformung der Rutschen (30, 32) ausgebildet sind.
4. Träger nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Anschläge durch an die Rutschen angesetzte Stücke ausgebildet sind.
5. Träger nach Anspruch 4, dadurch gekennzeichnet, daß die angesetzten Stücke durch ausgekehlte Nägel (44) gebildet sind, die an den Rutschen befestigt sind und dort einen vorragenden Punkt auf deren Innenfläche bilden.
6. Träger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Rutschen (30, 32) und die Nuten (36, 38) zueinander komplementäre Abschnitte aufweisen, die das Auseinanderstehen der Rutschen voneinander verhindern, beispielsweise durch eine Schwalbenschwanzverbindung.
7. Träger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Platten (26) auf ihrer Unterseite mit mindestens einer Ausnehmung (46) versehen sind, die die Beobachtung der Versuchsröhren (22) erlaubt.
8. Verfahren für die Montage eines Trägers nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es darin besteht, eine Anzahl von Platten auf die Rutschen (30, 32) der Stütze derart aufzufädeln, daß die Höhe des Plattenstapels leicht geringer als die Höhe der zu zentrifugierenden Röhren (22) ist, und dann die Anschläge (42) auf den Rutschen auszubilden.
EP86400337A 1985-02-19 1986-02-18 Probenhalter für Zentrifuge und Verfahren zu seiner Herstellung Expired EP0192571B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86400337T ATE41885T1 (de) 1985-02-19 1986-02-18 Probenhalter fuer zentrifuge und verfahren zu seiner herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8502358A FR2577442B1 (fr) 1985-02-19 1985-02-19 Portoir de tubes a essais pour centrifugeuse, et son procede de fabrication
FR8502358 1985-02-19

Publications (3)

Publication Number Publication Date
EP0192571A2 EP0192571A2 (de) 1986-08-27
EP0192571A3 EP0192571A3 (en) 1987-06-03
EP0192571B1 true EP0192571B1 (de) 1989-04-05

Family

ID=9316412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400337A Expired EP0192571B1 (de) 1985-02-19 1986-02-18 Probenhalter für Zentrifuge und Verfahren zu seiner Herstellung

Country Status (4)

Country Link
EP (1) EP0192571B1 (de)
AT (1) ATE41885T1 (de)
DE (1) DE3662651D1 (de)
FR (1) FR2577442B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4242476C1 (de) * 1992-12-16 1994-08-11 Eppendorf Geraetebau Netheler Vorrichtung zum Zentrifugieren von Proben
US6491615B1 (en) 2000-08-11 2002-12-10 Gentra Systems, Inc. Rotor locator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032066A (en) * 1976-03-15 1977-06-28 Beckman Instruments, Inc. Adapters for centrifuge rotors
US4389374A (en) * 1981-06-29 1983-06-21 Beckman Instruments, Inc. Centrifuge tube holder

Also Published As

Publication number Publication date
ATE41885T1 (de) 1989-04-15
EP0192571A2 (de) 1986-08-27
EP0192571A3 (en) 1987-06-03
FR2577442A1 (fr) 1986-08-22
FR2577442B1 (fr) 1987-03-20
DE3662651D1 (en) 1989-05-11

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