EP0249533A1 - Verfahren und Vorrichtung zur Gewinnung und Transport von in Flüssigkeiten befindlichen chemischen Verbindungen - Google Patents

Verfahren und Vorrichtung zur Gewinnung und Transport von in Flüssigkeiten befindlichen chemischen Verbindungen Download PDF

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Publication number
EP0249533A1
EP0249533A1 EP87401241A EP87401241A EP0249533A1 EP 0249533 A1 EP0249533 A1 EP 0249533A1 EP 87401241 A EP87401241 A EP 87401241A EP 87401241 A EP87401241 A EP 87401241A EP 0249533 A1 EP0249533 A1 EP 0249533A1
Authority
EP
European Patent Office
Prior art keywords
liquid
analyzed
cover
sampling
container
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.)
Ceased
Application number
EP87401241A
Other languages
English (en)
French (fr)
Inventor
Philippe Lorente
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP0249533A1 publication Critical patent/EP0249533A1/de
Ceased 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
    • 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
    • B01L3/56—Labware specially adapted for transferring fluids
    • B01L3/569—Glassware

Definitions

  • the present invention relates to a device and a method allowing the sampling of determined chemical compounds in a liquid and their storage for later analysis.
  • the first possible applications mainly concern the biomedical field and the analysis of blood and urine.
  • the present invention relates to a simple device, which makes it possible to efficiently and without difficulty take the sample of the liquid to be analyzed, then to purge the part of the apparatus containing the agent fixing the liquid which is there. . Finally, this device allows easy gripping and transport of the fixing agent and of the compounds. chemicals that must be analyzed after collection.
  • the invention more specifically comprises a container in which the liquid to be analyzed is deposited, a sampling support consisting mainly of a small column containing a fixing agent and terminated at its upper end by a needle allowing, in connection with a suction means, the suction of the liquid to be analyzed and its passage over the fixing agent, characterized in that it comprises a removable cover crossed by a dip tube, the bottom of which is bathed by the liquid to be analyzed, the cover s 'fitting tightly on the container and the sample holder fitting tightly on the top of the dip tube so as to allow the purge of the liquid present in the column in the absence of the suction means.
  • the device must be easy to use and must be designed so as to avoid any risk of liquid overflowing during sampling.
  • the quantity of liquid which passes through the fixing agent must obviously be known with precision.
  • the device must also allow the purging of the residual liquid present in the fixing agent after the passage of the liquid. These aims are achieved by means which prevent the rise of the liquid to be analyzed in the dip tube when the lid is closed, which allow normal suction of the liquid to be analyzed by the dip tube when the sampling support is mounted on the lid. and which ensure the elimination of the excess liquid present in the support after aspiration.
  • the means for aspirating the liquid to be analyzed 1 is a vacuum interrupter, the bottom of which is capable of being pierced by the needle integral with the column, so that a determined quantity of liquid is aspirated.
  • Figure 1 therefore shows that the liquid to be withdrawn 1 is poured into the container 2, which is then closed by means of the cover 3.
  • This cover 3 is provided with a dip tube 4 which communicates with the outside by means of 'A conical imprint 5 which ensures the centered positioning of a male cone.
  • this imprint 5 consists of an envelope pierced with orifices 6.
  • the cover 3 closes on the container 2 by means of a provision which guarantees airtightness, for example a low clearance adjustment 7 supplemented by a circular groove 8 which, in the case of plastic parts, ensures hermetic contact along fitting 7.
  • the orifices 6 make it possible to prevent the air contained in the container 2 from being compressed when the cover 3 is tightened, which would have led to a possibly significant rise in the level of the liquid inside the dip tube 4 and an overflow of the liquid. Here it is nothing, and the liquid remains at the level indicated by h o and h ⁇ o in Figure 1.
  • the support for the sample 20 is shown, more precisely shown in FIG. 2.
  • It essentially comprises a fixing agent 21, for example a cationic resin if it is desired to take a metal present in ionized form in the urine, such as that the cadmium which fills a column 22 closed at its ends by two male cone plugs 23 and 24, the upper plug 23 being completed by a conventional syringe needle 25, while the lower part 34 of the lower plug 24 is intended for s '' fit into the conical cavity 5 during assembly. All of these parts are protected by a cylindrical case 26 capable of carrying a label allowing the identification of the sample, such as for example a barcode.
  • the lower end 27 of this case 26 ensures stable mounting of the sampling support 20 thanks to its hermetic contact with a ring 9 secured to the cover 3 shown in FIG. 1.
  • the precise positioning of the baluster 22 is obtained in the radial and axial directions by means of two stops 28 blocked by shoulders on the inner surface of the cylindrical case 26 or force-fitted ; these stops are bored in their center according to a conical imprint 29 complementary to the chamfer 30 produced at the end of the shoulder of the corresponding male cone 23 or 24.
  • the caps 32 and 33 are separate parts; according to another embodiment of the invention not shown here, they form a single piece and the handling of the device is facilitated.
  • the means which allows the suction of the liquid through the fixing agent 21 is preferably a vacuum interrupter 40, the bottom 41 of which is pierced by the needle 25: the air which was contained in the dip tube 4, the male cone plugs 23 and 24, the needle 25 and the interstices of the fixing agent 21 then immediately passes into the empty space 42 of the bulb 40, accompanied by a well-determined quantity of liquid to be analyzed 1, up to the level indicated by h1 in FIG. 1.
  • This operation is made possible by the fact that the orifices 6 are now blocked at their ends by the male cone plug 24 and that the air contained in the container 2 above the liquid 1 can no longer pass there: the path which the fluids must follow is therefore perfectly known.
  • the sampling is completed by removing the bulb 40, this which destroys the balance of the fluid system and forces the liquid to evacuate the sampling support 20 to fall back into the container 2 and the tube 4.
  • the fixing agent 21 is then dry or more or less, which allows good preservation of the substances that it allowed to fix. The user only has to extract the sampling support 20, close it by means of the caps 31, 32 and 33 and send it to the laboratory.
  • the suction means 40 and the sampling support 20 can be housed and detachably held in place in the container 2 and its cover 3, which facilitates the transport of the complete device at the sampling sites.

Landscapes

  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
EP87401241A 1986-06-04 1987-06-03 Verfahren und Vorrichtung zur Gewinnung und Transport von in Flüssigkeiten befindlichen chemischen Verbindungen Ceased EP0249533A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8608061A FR2599841B1 (fr) 1986-06-04 1986-06-04 Dispositif de prelevement et de transport de composes chimiques presents dans un liquide
FR8608061 1986-06-04

Publications (1)

Publication Number Publication Date
EP0249533A1 true EP0249533A1 (de) 1987-12-16

Family

ID=9335999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87401241A Ceased EP0249533A1 (de) 1986-06-04 1987-06-03 Verfahren und Vorrichtung zur Gewinnung und Transport von in Flüssigkeiten befindlichen chemischen Verbindungen

Country Status (2)

Country Link
EP (1) EP0249533A1 (de)
FR (1) FR2599841B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0729729A2 (de) * 1995-02-28 1996-09-04 Alpha Scientific Corporation Vorrichtung und Verfahren zum Entfernen, Verdünnen und Abgeben eines Fluids aus einem biegsamen Rohr
CN105675353A (zh) * 2016-04-15 2016-06-15 廖清华 一种尿液标本的提取装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1404672A (fr) * 1964-04-17 1965-07-02 Bouchage Mecanique Bouchon étaleur à pipette
US3343422A (en) * 1965-08-12 1967-09-26 Dwight G Mcsmith Pipette safety device
FR2335844A1 (fr) * 1975-12-18 1977-07-15 Riedel De Haen Ag Dispositif et procede pour le dosage de substances se trouvant en solution
US4066359A (en) * 1976-05-21 1978-01-03 Louis Bucalo Method and structure for treating body fluids with cells therein
US4537747A (en) * 1983-03-16 1985-08-27 Chemetrics, Inc. Disposable device for sampling and diluting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1404672A (fr) * 1964-04-17 1965-07-02 Bouchage Mecanique Bouchon étaleur à pipette
US3343422A (en) * 1965-08-12 1967-09-26 Dwight G Mcsmith Pipette safety device
FR2335844A1 (fr) * 1975-12-18 1977-07-15 Riedel De Haen Ag Dispositif et procede pour le dosage de substances se trouvant en solution
US4066359A (en) * 1976-05-21 1978-01-03 Louis Bucalo Method and structure for treating body fluids with cells therein
US4537747A (en) * 1983-03-16 1985-08-27 Chemetrics, Inc. Disposable device for sampling and diluting

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0729729A2 (de) * 1995-02-28 1996-09-04 Alpha Scientific Corporation Vorrichtung und Verfahren zum Entfernen, Verdünnen und Abgeben eines Fluids aus einem biegsamen Rohr
EP0729729A3 (de) * 1995-02-28 1996-09-11 Alpha Scient Corp
US5667098A (en) * 1995-02-28 1997-09-16 Alpha Scientific Corporaton Apparatus and method for removing, diluting and dispensing fluid from a flexible tube
CN105675353A (zh) * 2016-04-15 2016-06-15 廖清华 一种尿液标本的提取装置

Also Published As

Publication number Publication date
FR2599841B1 (fr) 1989-09-01
FR2599841A1 (fr) 1987-12-11

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