Apparatus for preserving liquid in automatic analyzer

• US 4,455,280 A
• Filed: 02/02/1982
• Issued: 06/19/1984
• Est. Priority Date: 02/10/1981
• Status: Expired due to Term

• Current Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Original Assignee: Olympus Optical Company Ltd. (Olympus Corporation)
• Inventors: Shinohara, Toshio, Usikubo, Masao
• Primary Examiner(s): Marcus, Michael S.
• Application Number:
  US06/345,155
• Time in Patent Office: 868 Days
• Field of Search: 422/63-67, 422/99, 422/100, 422/102, 422/104, 141/65, 141/82, 141/154, 141/350
• US Class Current: 422/63
• CPC Class Codes: G01N 2035/00435 Refrigerated reagent storage
• CPC Class Codes: G01N 2035/00455 Controlling humidity in analyser
• CPC Class Codes: G01N 2035/0405 manipulating closing or opening means, e.g. stoppers, screw caps, lids or covers
• CPC Class Codes: G01N 35/1002 Reagent dispensers

Abstract

In an apparatus for preserving different kinds of reagents to be selectively delivered for performing different test items in an automatic chemical analyzer, the reagents are contained in respective vessels which are placed on a turntable rotatably arranged in a compartment inside of which is kept at a low temperature, beside each reagent container is movably arranged a plug plate having an elastic plug secured thereto and a movable lever is arranged to engage with any one of the plug plate so as to remove the plug out of an opening of the reagent vessel only when a probe of a delivery device is moved through the opening.

Claims

1. An apparatus for preserving and delivering liquids to be delivered by a delivery device including a probe for aspirating and discharging a given amount of liquid in an automatic chemical analyzer, each liquid being contained in respective liquid containers, comprising:

a compartment including a housing and an upper lid which is detachably fitted to the housing;

a turntable arranged rotatably in said housing and having a plurality of positions for locating a plurality of said liquid containers;

means for keeping a temperature inside the compartment at a desired temperature;

means for rotating the turntable for indexing a desired one of said plurality of liquid containers at a liquid aspirating position;

a hole formed in the upper lid at said liquid aspirating position, said probe of the delivery device being insertable through said hole;

a plurality of movable plug assemblies provided on the turntable, each of the plug assemblies being movable between a closed position for closing an opening of a respective liquid container and an open position for exposing the opening of a respective liquid container; and

removing means comprising a member movably secured to the upper lid and having an actuating end which is selectively engaged with a movable plug assembly for moving the movable plug assembly from the closed position to the open position, thereby exposing the opening of a liquid container indexed at the aspirating position.

2. An apparatus according to claim 1, wherein each said liquid containers contain a reagent.

3. An apparatus according to claim 1, further comprising an intermediate lid detachably secured to said turntable and having a plurality of openings through which upper parts of said liquid containers extend, the inside space of the compartment being divided into upper and lower sections by said intermediate lid and substantial portions of the liquid containers being situated in the lower section which is kept at a desired temperature.

4. An apparatus according to claim 3, wherein said plurality of movable plug assemblies are arranged at respective openings of the intermediate lid.

5. An apparatus according to claim 4, wherein each of said movable plug assemblies comprises a plug made of elastic material for closing the opening of the liquid container, a plug plate journaled swingably to the intermediate lid and having one end secured to the plug, and said member of the removing means comprises an L-shaped lever having one end which is engaged with the other end of said plug plate and the other end connected to a rotary member.

6. An apparatus according to claim 5, wherein said rotary member comprises a rotary solenoid.