EP0754497B1 - Liquid container made of plastic for small amounts of liquid - Google Patents

Liquid container made of plastic for small amounts of liquid Download PDF

Info

Publication number
EP0754497B1
EP0754497B1 EP19960202036 EP96202036A EP0754497B1 EP 0754497 B1 EP0754497 B1 EP 0754497B1 EP 19960202036 EP19960202036 EP 19960202036 EP 96202036 A EP96202036 A EP 96202036A EP 0754497 B1 EP0754497 B1 EP 0754497B1
Authority
EP
European Patent Office
Prior art keywords
container
cover
wall
liquid container
connecting lip
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 - Lifetime
Application number
EP19960202036
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0754497A1 (en
Inventor
Herbert Manfred Bösel
Jacobus Wilhelmus Van Der Weele
Saake Kleinman
Gerard Van Amerongen
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.)
PerkinElmer Health Sciences BV
Original Assignee
Packard Instrument BV
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 Packard Instrument BV filed Critical Packard Instrument BV
Publication of EP0754497A1 publication Critical patent/EP0754497A1/en
Application granted granted Critical
Publication of EP0754497B1 publication Critical patent/EP0754497B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above
    • B01L3/5082—Test tubes per se
    • B01L3/50825—Closing or opening means, corks, bungs

Definitions

  • the invention relates to a liquid container according to the preamble of claim 1.
  • Such liquid container is known from German patent specification DE-C-3402276 and is typically used for performing measurements on samples contained in the liquid container.
  • a possible measurement which can for instance be performed on the sample in the liquid container is the determination of the amount of light emitted by the sample as a result of the scintillation effect caused by the radioactivity present in the sample, which can be obtained by radiolabelling a particular substance to be measured in the sample with a radioactive isotope.
  • Such measurement takes place in a measuring chamber, sealed lightproof, of a liquid scintillation counter into which the liquid container is inserted by means of a mechanism.
  • a number of liquid containers are consecutively introduced into the measuring chamber from a sample changer, with or without the use of a cassette. This may involve two problems.
  • a first problem which may occur is that the liquid container has a projection which is retained on the edge of the measuring chamber.
  • a second problem which may occur is that the liquid container cannot be freely displaced from the sample changer or cassette when the liquid container is released from the sample changer or cassette. This, too, is caused by the presence of projections on the liquid container.
  • substantially cylindrical containers with a separate, substantially cylindrical sealing cap have been utilized.
  • the drawback of a liquid container of such design is that often no cap is available at the moment when the liquid container should be sealed, or that the caps roll away and get lost. Consequently, the use of liquid containers with loose sealing caps is inconvenient.
  • an integral sealing cap is provided, the closing and opening of the container must be simple.
  • the object of the invention is to provide a liquid container for samples on which measurements are to be performed, which liquid container does not have the above-described problems.
  • the invention is characterized by the features of claim 1.
  • the connecting lip has a length such that, in the closed position of the cover part, this lip does not extend radially outside the space bounded by the surface of the liquid container, the liquid container does not have a projection which may be caught behind the edge of the measuring chamber or on the sample changer or the cassette from which the liquid container is introduced into the measuring chamber.
  • the surface of the container part, adjacent the opening and diametrically opposite the connecting lip is provided with a beveled side, the opening operation is simplified. This moreover creates a recognizable location for opening the container and also a larger contact area, which substantially simplifies the opening of the liquid container.
  • the substantially rotationally symmetrical wall viewed in circumferential direction, is higher adjacent the connecting lip than at the part of this wall which is located diametrically opposite the connecting lip, the higher part of the rotationally symmetrical wall fits easily into the opening at the start of the closing operation. This simplifies the closing of the cover part.
  • the lower part of the wall, which part is located opposite the connecting lip easily fits into the opening of the container part, because of the slighter height thereof.
  • EP-A-0 056 469 discloses a hinge between two plastic parts, wherein the hinge in the form of a connecting lip, does not extend outside the bounds of the outer circumference of the parts in a closed position.
  • the liquid container shown is manufactured from synthetic material and is suitable for receiving small amounts of liquid, in particular samples for performing measurements thereon.
  • the liquid container comprises a rotationally symmetrical container part 1 having an opening 2 which is sealable by a cover part 3 formed on the container part 1 via a connecting lip 4.
  • the cover part 3 comprises a cover wall 5 and a substantially rotationally symmetrical wall 6 whose outer surface, at least the part 6a thereof which is remote from the cover wall 5, in a closed position of the cover part 3 abuts fittingly and sealingly against the inner surface of the container part 1.
  • the container part is of a substantially cylindrical design. It is understood that a conical or a partly conical, partly cylindrical design of the container part is also possible.
  • the cover wall 5 may also have a convex configuration.
  • Such a liquid container can for instance he manufactured in one single injection-molding operation.
  • the connecting lip 4 has a length such that in the closed position of the cover part 3 this lip does not extend radially outside the space bounded by the outer surface of the liquid container 1, 3.
  • the liquid container is prevented from having projecting parts whereby the container, when being placed from a sample changer or a cassette into a measuring chamber, could catch behind anything, as a result of which the liquid container is not completely received in the measuring chamber.
  • the surface of the container part 1, adjacent the opening 2 and diametrically opposite the connecting lip 4, is provided with a beveled side 9. This moreover creates a recognizable location for opening the container and also a larger contact area, which substantially simplifies the opening of the liquid container.
  • the substantially rotationally symmetrical wall 6, viewed in circumferential direction, is higher adjacent the connecting lip 4 than at the part of this wall 6 which is located diametrically opposite the connecting lip 4.
  • the higher part of the rotationally symmetrical wall 6 fits easily into the opening 2 at the start of the closing operation and likewise, in the nearly closed position, the lower part of the wall 6, which part is located opposite the connecting lip 4, easily fits into the opening 2 of the container part 1, because of the slighter height thereof.
  • the outer surface of the container part 1 is provided with a recess 7 wherein, in the closed position of the cover part 3, the connecting lip 4 extends at least at the level of the container part 1.
  • the thickness of the connecting lip 4 and the depth of the recess 7 are chosen so that the side of the connecting lip 4 facing away from the inner space S of the container is in alignment with the outer surface of the container part 1.
  • the rotationally symmetrical wall 6 of the cover part 3 Adjacent the cover wall 5, the rotationally symmetrical wall 6 of the cover part 3 has a rotationally symmetrical part 6b of a slightly greater outer diameter. This slightly greater outer diameter is chosen so that the part 6b does not fit in the opening 2 of the container part 1 and accordingly forms a stop shoulder 6c. It is thus provided that the cover part 3 is always pressed equally far into the opening 2 of the container part 1, so that the connecting lip 4 can never bulge and extend outside the space bounded by the outer surface of the liquid container 1, 3 caused by the cover part 3 being pressed too far into the opening 2.
  • the outer diameter of the cover wall 5 is preferably equal to the outer diameter of the container part 1 adjacent the opening 2 thereof, so that the cover wall 5 forms a collar 8 outside the substantially rotationally symmetrical wall 6.
  • the connecting lip 4 is formed thereon.
  • the connecting lip 4 is also located within the continuation of the imaginary cylindrical space defined by the outer surface of the cover wall 5, so that the part of the connecting lip 4 which does not fit into the recess 7 does not form a projection either.
  • the liquid container can moreover be opened in a simple manner without this requiring a projection extending outside the imaginary cylindrical space defined by the outer surface of the liquid container 1, 3.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Closures For Containers (AREA)
EP19960202036 1995-07-21 1996-07-18 Liquid container made of plastic for small amounts of liquid Expired - Lifetime EP0754497B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1000868A NL1000868C2 (nl) 1995-07-21 1995-07-21 Vloeistofhouder uit kunststof voor kleine vloeistofhoeveelheden.
NL1000868 1995-07-21

Publications (2)

Publication Number Publication Date
EP0754497A1 EP0754497A1 (en) 1997-01-22
EP0754497B1 true EP0754497B1 (en) 2002-10-23

Family

ID=19761357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960202036 Expired - Lifetime EP0754497B1 (en) 1995-07-21 1996-07-18 Liquid container made of plastic for small amounts of liquid

Country Status (3)

Country Link
EP (1) EP0754497B1 (nl)
DE (1) DE69624416T2 (nl)
NL (1) NL1000868C2 (nl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105642381B (zh) * 2016-03-05 2017-11-10 华北石油管理局总医院 一种离心管
CN110550314A (zh) * 2018-06-04 2019-12-10 无锡市凯顺医疗器械制造有限公司 一种塞子及试管组件

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1493276A (fr) * 1966-09-19 1967-08-25 Capuchon muni d'un orifice obturable pour bouteilles et autres récipients
CH653639A5 (de) * 1981-01-21 1986-01-15 Zeller Plastik Koehn Graebner Einstueckiges klappscharnier aus kunststoff.
US4390111A (en) * 1982-02-08 1983-06-28 Robbins Scientific Corporation Sealable vial
DE3402276C1 (de) * 1984-01-24 1985-02-21 Eppendorf Gerätebau Netheler + Hinz GmbH, 2000 Hamburg Reaktionsgefaess aus Kunststoff fuer kleine Fluessigkeitsmengen
WO1991016242A1 (en) * 1990-04-24 1991-10-31 Life Technologies, Inc. A microcentrifuge vial with a flip top/screw cap for dispensing with a pipette
DK78093D0 (da) * 1993-07-01 1993-07-01 Boejco A S Plastkapsel med snaphaengsel

Also Published As

Publication number Publication date
NL1000868C2 (nl) 1997-01-22
DE69624416T2 (de) 2003-08-28
EP0754497A1 (en) 1997-01-22
DE69624416D1 (de) 2002-11-28

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