US 11,446,668 B2Granted

Automatic analysis device

AssigneeHitachi High-Tech Corporation

InventorsShunsuke Sasaki, Takenori Okusa

Life of this patent

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Abstract

An automatic analysis device which can be accessed from a front surface of the device to a rear surface side of the device when a user accesses the automatic analysis device and reduce the risk of damage to a rod-shaped member due to contact. A reagent suction position, a reagent discharge position, a reagent dispensing nozzle cleaning portion, and a reagent dispensing mechanism retraction portion from which the reagent dispensing mechanism is retracted are disposed on a trajectory of an arm of the reagent dispensing mechanism. A nozzle guide accommodation portion accommodates a nozzle guide of a reagent dispensing mechanism and the reagent dispensing nozzle. The reagent dispensing mechanism retraction portion is a cylindrical member protruding downward from an upper surface cover of the automatic analysis device and prevents direct contact with the reagent dispensing nozzle by positioning the reagent dispensing nozzle in the nozzle accommodation portion.

Claims14

Dependent claims

An automatic analysis device comprising:

a rod-shaped member that dispenses or stirs a liquid;
a moving portion that moves the rod-shaped member;
a retraction portion into which the rod-shaped member is retracted when in a retraction position;
and
control portion that controls the moving portion, wherein
the retraction position is formed with a hole to allow the rod-shaped member to be lowered downwards in a vertical direction,
when the control portion receives a retraction request for the rod-shaped member, the control portion controls the moving portion to move the rod-shaped member to the retraction position by rotational movement of the rod-shaped member to a location above the retraction portion and then lowering the rod-shaped member into the hole,
the moving portion includes an arm extending in a horizontal direction and a guide formed on a lower surface of a tip of the arm,
a guide accommodation portion and a rod-shaped member accommodation portion are formed in the hole, the guide accommodation portion accommodates the guide, the rod-shaped member communicates with an opening on a bottom of the guide accommodation portion and accommodates the rod-shaped member, and
a clearance between a side surface of the rod-shaped member and an inner wall surface of the rod-shaped member accommodation portion is larger than a clearance between a side surface of the guide and an inner wall surface of the guide accommodation portion, in a state in which the rod-shaped member is accommodated in the rod-shaped member accommodation portion.

7 more elements

An automatic analysis device comprising:

a first rod-shaped member that dispenses or stirs a liquid;
a moving portion that moves the first rod-shaped member;
a retraction portion into which the first rod-shaped member is retracted when in a retraction position;
and
a control portion that controls the moving portion, wherein
the retraction position is formed with a hole to allow the first rod-shaped member to be lowered downwards in a vertical direction,
when the control portion receives a retraction request for first the rod-shaped member, the control portion performs control to move the first rod-shaped member to the retraction position by rotational movement of the first rod-shaped member to a location above the retraction portion and then lowering the first rod-shaped member into the hole,
the moving portion includes an arm extending in a horizontal direction and a guide formed on a lower surface of a tip of the arm,
the hole includes a guide accommodation portion that accommodates the guide and a rod-shaped member accommodation portion that communicates with an opening in a bottom of the guide accommodation portion and accommodates the first rod-shaped member, and
a diameter of a bottom surface of the guide is smaller than a diameter of an upper opening of the guide accommodation portion and larger than a diameter of the opening in the bottom of the guide accommodation portion.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/633,067Filed 29 Jun 2018
Priority: JP JP2017-1492461 Aug 2017
Published: US 2020/0164377 A128 May 2020
Granted: 20 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

B01L 3/52
Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers: containers specially adapted for storing or dispensing a reagent
G01N 35/10
Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor:…
G01N 35/02
Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor:…
G01N 35/025
Using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations: having a carousel or turntable…