FR2549961A2 - Cell for analysis device, intended to collect a fraction of a liquid sample for reaction and analysis - Google Patents

Cell for analysis device, intended to collect a fraction of a liquid sample for reaction and analysis Download PDF

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Publication number
FR2549961A2
FR2549961A2 FR8312425A FR8312425A FR2549961A2 FR 2549961 A2 FR2549961 A2 FR 2549961A2 FR 8312425 A FR8312425 A FR 8312425A FR 8312425 A FR8312425 A FR 8312425A FR 2549961 A2 FR2549961 A2 FR 2549961A2
Authority
FR
France
Prior art keywords
liquid
cell
conduit
analysis
cells
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
FR8312425A
Other languages
French (fr)
Other versions
FR2549961B2 (en
Inventor
Bruno Cornut
Jean Chambu
Jean-Louis Seris
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.)
Societe National Elf Aquitaine
Original Assignee
Societe National Elf Aquitaine
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
Priority claimed from FR8109496A external-priority patent/FR2506015A1/en
Application filed by Societe National Elf Aquitaine filed Critical Societe National Elf Aquitaine
Priority to FR8312425A priority Critical patent/FR2549961B2/en
Priority to US06/626,749 priority patent/US4623519A/en
Priority to DE19843425567 priority patent/DE3425567A1/en
Priority to ES534467A priority patent/ES534467A0/en
Priority to JP59155133A priority patent/JPS6052743A/en
Priority to IT22059/84A priority patent/IT1179509B/en
Publication of FR2549961A2 publication Critical patent/FR2549961A2/en
Application granted granted Critical
Publication of FR2549961B2 publication Critical patent/FR2549961B2/en
Expired legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03Cuvette constructions
    • G01N21/07Centrifugal type cuvettes

Abstract

Cell for fractionation and inspection of a sample of liquid in a device for analysis of this liquid comprising a rotor, a central vessel for distributing the said liquid and a set of such fractionation cells on the periphery of the rotor. This cell is characterised in that the cells 4 and the conduit 6 are produced by moulding plastic articles, the conduit 6 for delivery of the liquid and discharge of the gases is formed by the space prevailing between two plastic components 2 and 3 welded to each other by two weld lines 7, 8 bordering the said conduit, the opposing faces of the said components which form the conduit with the said weld lines being left raw from moulding.

Description

CELLULE POUR DISPOSITIF D'ANALYSE, DESTINEE A RECUEILLIR
UNE FRACTION D'UN ECHANTILLON LIQUIDE
POUR REACTION ET ANALYSE
On a décrit dans le brevet principal une cellule équipant un dispositif d'analyse, cette cellule étant destinée a recueillir une fraction d'un échantillon liquide à analyser, et étant disposée, avec d'autres cellules semblables, selon les rayons d'un rotor, à la périphérie de celui-ci. On utilise la rotation de ce rotor, et lteffet de la force centrifuge qui en résulte, pour réaliser la distribution du liquide en frac tions délivrées aux diverses cellules d'analyse semblables, à partir d'une cuve de répartition centrale dans laquelle sont prélevées lesdites fractions.
CELL FOR ANALYSIS DEVICE FOR COLLECTING
A FRACTION OF A LIQUID SAMPLE
FOR REACTION AND ANALYSIS
We have described in the main patent a cell equipping an analysis device, this cell being intended to collect a fraction of a liquid sample to be analyzed, and being arranged, with other similar cells, according to the radii of a rotor. , on the outskirts of it. The rotation of this rotor, and the effect of the centrifugal force which results therefrom, is used to distribute the liquid in fractions delivered to the various similar analysis cells, from a central distribution tank from which the said samples are taken. fractions.

Chaque fraction prélevée est mise au contact d'un réactif comprenant un indicateur, puis est examinée à travers les parois de la cellule, au moyen d'un dispositif approprié. Each fraction taken is brought into contact with a reagent comprising an indicator, then is examined through the walls of the cell, using an appropriate device.

Les diverses dispositions décrites dans le brevet principal ont pour objet d'éviter la formation de bulles d'air et de gaz dans la cellule ou, plus précisément, de faciliter l'évacuation de telles bulles pendant la centrifugation en autorisant un remplissage complet de ladite cellule. The various provisions described in the main patent are intended to avoid the formation of air and gas bubbles in the cell or, more precisely, to facilitate the evacuation of such bubbles during centrifugation by allowing complete filling of said cell.

Les dispositions du brevet principal visent en particulier des conduits d'amenée de liquide et d'évacuation de gaz parallèles au départ de la cellule, ces conduits pouvant être éventuellement confondues sur une partie de leur longueur. The provisions of the main patent relate in particular to liquid supply and gas discharge conduits parallel to the start of the cell, these conduits possibly being combined over part of their length.

Il est prévu en particulier de réaliser cellule et conduits par moulage de pièces plastiques soudées l'une à l'autre, des nervures prati quées sur la face interne de l'une et/ou l'autre de ces feuilles ménageant lesdits conduits. In particular, provision is made to make the cell and conduits by molding plastic parts welded to one another, ribs practiced on the internal face of one and / or the other of these sheets providing for said conduits.

Bien entendu, il est avantageux de reduire, autant que faire se peut, le volume des conduits qui constituent des espaces morts nuisibles lorsqu'ils distraient de la mesure des quantités de liquide non négligeables.  Of course, it is advantageous to reduce, as much as possible, the volume of the conduits which constitute harmful dead spaces when they distract from the measurement of the quantities of non-negligible quantities of liquid.

La présente invention a précisément pour objet une cellule de mesure réalisée avec ses conduits à partir de pièces plastiques moulées, et présentant des espaces morts extrêmement réduits, cette cellule permettant, en outre, une évacuation aussi complète que possible des gaz et un remplissage lui aussi complet, par le liquide à analyser. The present invention specifically relates to a measurement cell made with its conduits from molded plastic parts, and having extremely reduced dead spaces, this cell also allowing, as complete an evacuation as possible of the gases and also filling it complete, with the liquid to be analyzed.

La cellule de fractionnement selon l'invention destinée à l'observation d'un échantillon de liquide dans un dispositif d'analyse de ce liquide comportant un rotor, une cuve centrale de répartition dudit liquide, un ensemble de telles cellules de fractionnement sur la périphérie du rotor, reliées chacune à la cuve par un conduit d'amenée du liquide et d'evacuation des gaz confondus en un canal commun, cellule et conduit étant réalisés par moulage de pièces plastiques soudées l'une à l'autre, de manière connue et le conduit d'amenée du liquide et d'evacuation des gaz étant menagé par l'espace régnant entre deux pièces plastiques soudées l'une à l'autre par deux lignes de soudure bordant ledit conduit, les faces en regard desdites pièces qui constituent le conduit avec lesdites lignes de soudure étant laissées brutes de moulage. The fractionation cell according to the invention intended for the observation of a sample of liquid in a device for analyzing this liquid comprising a rotor, a central tank for distributing said liquid, a set of such fractionation cells on the periphery of the rotor, each connected to the tank by a conduit for supplying the liquid and evacuating the gases combined into a common channel, cell and conduit being produced by molding of plastic parts welded to each other, in known manner and the liquid supply and gas evacuation conduit being formed by the space prevailing between two plastic parts welded to each other by two weld lines bordering said conduit, the opposite faces of said parts which constitute the conduit with said weld lines being left unmolded.

De manière surprenante, les irrégularités et aspérites des faces brutes de moulage des deux pièces formant le conduit t ?'enée du liquide et d'évacuation des gaz, suffisent pour que soit ainsi ménagé entre ces pièces le libre passage non seulement des gaz, mais aussi du liquide. Surprisingly, the irregularities and asperities of the rough molding faces of the two parts forming the duct t? 'Enée of the liquid and gas evacuation, are sufficient so that is thus formed between these parts the free passage not only of gases, but also liquid.

On obtient ainsi un remplissage complet de la cellule, par un liquide exempt de bulles. A complete filling of the cell is thus obtained with a bubble-free liquid.

Bien entendu, la réalisation de cette cellule est particulièrement économique et simple. Of course, the production of this cell is particularly economical and simple.

Les caractéristiques et avantages de l'invention ressortiront d'ailleurs mieux de la description suivante, donnee uniquement à titre d'exemple, en référence aux dessins annexés dans lesquels:
- la figure 1 est une vue schematique en coupe transversale d'une
forme de réalisation de cellule selon l'invention;
- la figure 2 est une vue en coupe, à plus grande échelle, de la par
tie de la cellule de la figure 1, qui forme le conduit
d'amenée du liquide et d'évacuation des gaz;
- la figure 3 est une vue partielle de dessus d'un dispositif d'ana
lyse comportant une pluralité de cellules selon l'in-
vention.
The characteristics and advantages of the invention will emerge more clearly from the following description, given solely by way of example, with reference to the appended drawings in which:
- Figure 1 is a schematic cross-sectional view of a
cell embodiment according to the invention;
- Figure 2 is a sectional view, on a larger scale, of the par
tie of the cell of figure 1, which forms the conduit
liquid supply and gas evacuation;
- Figure 3 is a partial top view of an ana device
lysis comprising a plurality of cells according to the
vention.

Dans la forme de réalisation de la figure 2, la cellule 1 selon l'invention, constituée à partir de deux pièces plastiques moulees 2 et 3 soudées l'une à l'autre, comprend une cuvette 4, ménagée dans la pièce 2 et fermée par un couverice 5, ménagé par la pièce 3, et un conduit 6, aboutissant à ladite cuvette, réalisé entre les deux pièces 2 et 3 par deux soudures longitudinales 7 et 8 (figure 2) bordant ledit conduit 6. In the embodiment of FIG. 2, the cell 1 according to the invention, constituted from two molded plastic parts 2 and 3 welded to each other, comprises a bowl 4, formed in the part 2 and closed by a cover 5, formed by the part 3, and a conduit 6, leading to said bowl, produced between the two parts 2 and 3 by two longitudinal welds 7 and 8 (FIG. 2) bordering said conduit 6.

Les faces en contact des pièces 2 et 3, qui constituent, avec les soudures 7 et 8, le conduit 6 sont laissées brutes de moulage et, de ma nière surprenante, les aspérités et irrégularités de surface desdites pieces suffisent pour ménager un passage efficace à la fois pour l'amenée du liquide et l'évacuation des gaz. The faces in contact with the parts 2 and 3, which constitute, with the welds 7 and 8, the conduit 6 are left untrimmed and, surprisingly, the roughness and irregularities of the surface of said parts are sufficient to provide an efficient passage to both for the liquid supply and the gas evacuation.

Pour des raisons de clarté, ces aspérités et irrégularités ont eté representées très fortement accentuées sur la figure 2. En fait, on peut utiliser les surfaces telles qu'elles sortent brutes de moulage. For reasons of clarity, these roughness and irregularities have been shown very strongly accentuated in FIG. 2. In fact, the surfaces can be used as they come out of the mold.

La figure 3 représente une partie d'un dispositif d'analyse comportant une pluralité de cellules 1. Les zones hachurées 10 entourant ces cellules correspondent aux soudures qui bordent lesdites cellules et, en même temps, définissent le conduit 6.  FIG. 3 represents a part of an analysis device comprising a plurality of cells 1. The hatched zones 10 surrounding these cells correspond to the welds which border said cells and, at the same time, define the conduit 6.

Claims (1)

REVENDICATION CLAIM Cellule de fractionnement et d'observation d'un échantillon de liquide dans un dispositif d'analyse de ce liquide comportant un rotor, une cuve centrale de répartition dudit liquide, un ensemble de telles cellules de fractionnement sur la périphérie du rotor, reliées chacune à la cuve par un conduit d'amenee du liquide et d'évacuation des gaz, selon la revendication 4, du brevet rincipal,caractériséen ce que les cellules (4) et le conduit (6) sont réalisés par moulage de pièces plastiques, le conduit (6) d'amenée du liquide et d'évacuation des gaz est ménagé par l'espace régnant entre deux pièces plastiques (2) et (3) soudées l'une à l'autre par deux lignes de soudure (7, 8) bordant ledit conduit, les faces en regard desdites pièces qui constituent le conduit avec lesdites lignes de soudure étant laisses brutes de moulage.  Cell for fractionation and observation of a sample of liquid in a device for analyzing this liquid comprising a rotor, a central tank for distributing said liquid, a set of such fractionation cells on the periphery of the rotor, each connected to the tank by a liquid supply and gas evacuation pipe, according to claim 4, of the main patent, characterized in that the cells (4) and the pipe (6) are produced by molding of plastic parts, the pipe (6) for supplying the liquid and for discharging the gases is provided by the space prevailing between two plastic parts (2) and (3) welded to one another by two weld lines (7, 8) bordering said conduit, the opposite faces of said parts which constitute the conduit with said weld lines being rough molding leashes.
FR8312425A 1981-05-13 1983-07-27 ANALYSIS DEVICE CELL FOR COLLECTING A FRACTION OF A LIQUID SAMPLE FOR REACTION AND ANALYSIS Expired FR2549961B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR8312425A FR2549961B2 (en) 1981-05-13 1983-07-27 ANALYSIS DEVICE CELL FOR COLLECTING A FRACTION OF A LIQUID SAMPLE FOR REACTION AND ANALYSIS
US06/626,749 US4623519A (en) 1983-07-27 1984-07-02 Cell for analysis device, to collect a fraction of a liquid sample for reaction and analysis
DE19843425567 DE3425567A1 (en) 1983-07-27 1984-07-11 ANALYZING DEVICE CELL INTENDED TO COLLECT A PART OF A LIQUID REACTION AND ANALYSIS SAMPLE
ES534467A ES534467A0 (en) 1983-07-27 1984-07-19 FRACTIONATION CELL AND OBSERVATION OF A LIQUID SAMPLE IN AN ANALYSIS DEVICE
JP59155133A JPS6052743A (en) 1983-07-27 1984-07-25 Observing cell for fractional distillation of liquid sample
IT22059/84A IT1179509B (en) 1983-07-27 1984-07-26 ANALYSIS DEVICE, INTENDED TO COLLECT A FRACTION OF A LIQUID SAMPLE FOR REACTION AND ANALYSIS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8109496A FR2506015A1 (en) 1981-05-13 1981-05-13 Liq. sample analysis cell adaptable to centrifuge - has gas evacuation tube linking cell on rotor to central tank, parallel to liq. supply pipe
FR8312425A FR2549961B2 (en) 1981-05-13 1983-07-27 ANALYSIS DEVICE CELL FOR COLLECTING A FRACTION OF A LIQUID SAMPLE FOR REACTION AND ANALYSIS

Publications (2)

Publication Number Publication Date
FR2549961A2 true FR2549961A2 (en) 1985-02-01
FR2549961B2 FR2549961B2 (en) 1986-07-25

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FR8312425A Expired FR2549961B2 (en) 1981-05-13 1983-07-27 ANALYSIS DEVICE CELL FOR COLLECTING A FRACTION OF A LIQUID SAMPLE FOR REACTION AND ANALYSIS

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261531A1 (en) * 1986-09-16 1988-03-30 E.I. Du Pont De Nemours And Company Analysis device
EP0720736A1 (en) * 1993-09-01 1996-07-10 Abaxis, Inc. Simplified inlet channels
EP0693560A3 (en) * 1994-07-19 1997-01-22 Becton Dickinson Co Method and apparatus for fully automated nucleic acid amplification, nucleic acid assay and immunoassay

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280895A1 (en) * 1974-07-30 1976-02-27 Intertechnique Sa IMPROVEMENTS TO LIQUID SAMPLE FRACTIONING DEVICES, ESPECIALLY FOR ANALYSIS
US4226531A (en) * 1977-08-29 1980-10-07 Instrumentation Laboratory Inc. Disposable multi-cuvette rotor
FR2506015A1 (en) * 1981-05-13 1982-11-19 Elf Aquitaine Liq. sample analysis cell adaptable to centrifuge - has gas evacuation tube linking cell on rotor to central tank, parallel to liq. supply pipe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280895A1 (en) * 1974-07-30 1976-02-27 Intertechnique Sa IMPROVEMENTS TO LIQUID SAMPLE FRACTIONING DEVICES, ESPECIALLY FOR ANALYSIS
US4226531A (en) * 1977-08-29 1980-10-07 Instrumentation Laboratory Inc. Disposable multi-cuvette rotor
FR2506015A1 (en) * 1981-05-13 1982-11-19 Elf Aquitaine Liq. sample analysis cell adaptable to centrifuge - has gas evacuation tube linking cell on rotor to central tank, parallel to liq. supply pipe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261531A1 (en) * 1986-09-16 1988-03-30 E.I. Du Pont De Nemours And Company Analysis device
US4762683A (en) * 1986-09-16 1988-08-09 E. I. Du Pont De Nemours And Company Analysis device
EP0720736A1 (en) * 1993-09-01 1996-07-10 Abaxis, Inc. Simplified inlet channels
EP0720736A4 (en) * 1993-09-01 1996-08-28 Abay Sa Simplified inlet channels
EP0693560A3 (en) * 1994-07-19 1997-01-22 Becton Dickinson Co Method and apparatus for fully automated nucleic acid amplification, nucleic acid assay and immunoassay

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Publication number Publication date
FR2549961B2 (en) 1986-07-25

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