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

Definitions

• the invention relates to the field of automatic analyzers of samples, in particular of blood, by colorimetry and relates to a reaction segment with prepositioning and grip handle.
• sample analyzers it is usual to use, next to a plate carrying blood samples and a plate of reagents, another circular rotating or fixed plate, carrying on its periphery a series of transparent cuvettes intended to receive a metered mixture of blood and reagent, or another tray carrying rows of cuvettes.
• transparent cuvettes move to position themselves in front of a lamp so that the light beam passes through the sample and is received by a photodetector placed in a fixed position in front of the cuvette considered.
• reaction plate itself, that is to say the plate carrying these transparent cuvettes, is fixed while that the measurement photodetector is movable opposite said cuvettes.
• the empty transparent bowls should be correctly placed on their support tray provided with suitable cells for this purpose, so that they can be filled with the mixture, then the full bowls should be removed once the measurements made.
• the cuvettes are integral with the reaction plate which is called the "consumable" plate because when all the cuvettes are filled and the analyzes carried out, it is purely and simply removed from the apparatus and eliminated, to be replaced by a new plate whose bowls are ready for a new filling
• the subject of the invention is therefore a reaction segment intended to replace the traditional bars, which avoids the aforementioned drawbacks and allows the loading and unloading of a support plate in a safe and rapid manner.
• the invention therefore consists of a reaction segment for an automatic sample analyzer by colorimetry comprising a plurality of cuvettes integral with the same positioning plate, said cuvettes being intended to be placed in cells provided on a reaction crown, and to receive a mixture of sample and of reagent to be analyzed in which said segment carrying the cuvettes is associated with a grip handle offset from the convex side of the segment and extending vertically above the plane of said segment and in which the handle also constitutes a positioning member cooperating with at least one fixed guide member provided on the reaction ring.
• the grip is attached to the end of a horizontal tab which extends from the central part of the curved plate and is in the form of a hollow and flat sleeve forming a well open at least at its part lower.
• the sleeve of the grip grip covers two guide pins fixed vertically one next to the other on the sides of the reaction ring, and at a distance from the cells corresponding to the length of the horizontal tab.
• the guide pins in groups of two, are regularly distributed around the reaction ring so that the reaction segments are correctly positioned end to end on said ring.
• the reaction segment shown is composed of a curved plate 1 under which a plurality of small transparent cylindrical cuvettes 2 are attached intended to be placed in cells 3 of a reaction crown 4.
• the curved plate comes to bear on the crown and maintains all the bowls with good horizontality.
• the central part of the curved plate 1 is extended on the convex side of the segment by a horizontal tab 5 at the end of which is attached a grip handle 6.
• This handle is in the form of a hollow and flat sleeve forming a sort of well which extends vertically, above the wafer 1, the well being open at the top and at the bottom.
• Such a segment is advantageously made of transparent molded plastic. It is a simple consumable part therefore inexpensive. Of course, and depending on the needs of use, it can support a variable number of cups.
• segment as described can adapt to a rotating or fixed reaction ring.
• segment can be more or less curved, or even rectilinear to adapt to any crown or to adapt to a rectangular plate on which the bars are aligned.

Applications Claiming Priority (2)

Publications (1)

Family

ID=9371436

Family Applications (1)

Country Status (3)

Cited By (7)

Citations (3)

Family Cites Families (1)

• 1988
  • 1988-10-28 FR FR8814210A patent/FR2638529A1/fr not_active Withdrawn
• 1989
  • 1989-10-23 EP EP19890402907 patent/EP0369840A1/de not_active Withdrawn
  • 1989-10-30 JP JP28468289A patent/JPH02170055A/ja active Pending

Patent Citations (3)

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