Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Sample mechanical transport means in or for automated...
Reexamination Certificate
1998-10-27
2001-02-27
Warden, Jill (Department: 1743)
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Sample mechanical transport means in or for automated...
C422S063000, C422S105000, C422S105000, C422S105000, C436S043000, C436S045000, C436S047000, C436S049000, C436S054000, C436S180000
Reexamination Certificate
active
06193933
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an automatic analysis apparatus for quantifying a density of a substance dissolved in liquid, and in particular, to an automatic analysis apparatus for analyzing components of biological fluid, water or the like.
A conventional automatic analysis apparatus is disclosed in Japanese Laid-Open Patent No. S63-131066. A reagent container used in this apparatus, is composed of a chamber part in which a reagent is held, a pump part integrally incorporated with the chamber part, for sucking and pipetting the reagent from the chamber part by a predetermined quantity, and a pipette removably attached to a reagent discharge outlet port of the pump part. Further, a liquid filling port is formed in the upper part of the chamber part, and is removably fitted thereto with a cap formed therein with a vent hole for holding the inside of the chamber part at the ambient atmospheric pressure. Since the reagent container is integrally incorporated with the pump part, a system which can prevent carry-over of a reagent and cross-contamination is used.
The above-mentioned prior art fails to disclose any of countermeasures against the following problems:
First, the reagent container has a complicated structure so as to be expensive since it is integrally incorporated with the pump part as a reagent discharging means. Further, the volume of waste materials is increased, resulting in waste of resources since the reagent container is thrown away together with the pump part.
Second, since no data recording medium is provided to either the reagent container or the pump part, it is difficult to obtain data relating to a kind of a reagent, a used quantity, a remaining quantity, a quality, a condition of the pump part or the like.
Third, sticking of dust or contamination to the reagent supply port of the container, and deposition of solid components in the reagent due to drying of the reagent are caused, resulting in risks of clogging of the reagent supply port, and entry of foreign matter during discharge of the reagent, since the pipetter as a reagent discharge outlet is exposed.
Fourth, since the reagent container has such a structure that gas within the container flows into a passage, the degree of accuracy in a supply quantity of a reagent upon pipetting becomes uneven.
OBJECT AND SUMMERY OF THE INVENTION
An objet of the present invention is to provide an automatic analysis apparatus which can solve the above-mentioned problems, which is small-sized and which can simply carry out analysis with a high degree of accuracy.
According to the present invention, there is provided an automatic analysis apparatus in which a reagent container is removably attached to a reagent supply device, that is, the reagent supply device is attached to the reagent container which is then installed in the automatic analysis apparatus.
The reagent container or the reagent supply device is incorporated therein with data recording medium which can be accessed by a data recording and reproducing device incorporated in the automatic analysis apparatus in order to read and write data from and to the data recording medium.
Further, an openable and closable door is provided in the reagent supply port of the reagent supply device, which covers the reagent supply port when no reagent is discharge, but which is operated so as to open the reagent supply port when the reagent is to be discharged.
Further, a reagent bag in which a reagent is charge fully, is provided in the reagent container.
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patent: 5434083 (1995-07-01), Mitsumaki et al.
patent: 5439646 (1995-08-01), Tanimizu et al.
patent: WO 83/00932 (1983-03-01), None
Koide Akira
Mitsumaki Hiroshi
Miyake Ryo
Sasaki Yasuhiko
Terayama Takao
Antonelli Terry Stout & Kraus LLP
Bex Kath
Hitachi , Ltd.
Warden Jill
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